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ANTEC 1991 wrapup.

The technical sessions of The Society of Plastics Engineers' 49th Annual Technical Conference exceeded all expectations as more than 600 papers were presented, the most in ANTEC history. As in recent years, much of the attention at the C May 6-10 at the Palais des Congres in Montreal, was focused on environmental questions and the equally important Societal concerns of technical excellence and innovation, education, and membership.

George W. Thorne became the SPE President for 1991-1992 as President Leonard H. Drexler finished his successful year in office.

A total of 4190 industry professionals attended ANTEC '91, and more than 110 companies and institutions, including some dozen colleges, exhibited their products and services.

Business Meeting Highlights In delivering his review of the past year at the business meeting and luncheon on Monday, May 6, outgoing SPE President Leonard H. Drexler emphasized achievements in education and efforts to satisfy the needs of the membership. The former included the establishment of the SPE Scholarship Program; the new SPE film, Not Your Average Field Trip; and development of a plan to centralize the Society's educational activities. Dr. Drexler, along with Ken Kilpatrick of the Carolinas Section, presented awards to the first four SPE Scholarship winners.

Efforts in membership support included publishing the salary and benefits survey, publishing a consultants directory, and examining the possibility of developing an SPE employment clearing house service. Dr. Drexler presented a plaque to Norman Lee, charter member and past chairman, commemorating the Plastics Recycling Division's achievement of full Division status, accomplished in just three years.

Incoming SPE President George W. Thorne chose "Innovation" as his theme for 1991-1992. Defining innovation as finding ways to put complex ideas into action, Mr. Thorne promised to present innovative goals to his various committees, particularly in the areas of implementing the centralization of the education functions of the Society; student chapters; recycling; international; and SPE's 50th anniversary.

An Activist Approach The efforts of the plastics industry in regard to the environment, and public perceptions of those efforts, were the subject of three of the four plenary addresses. Citing surveys showing that the public supports recycling as the primary solution to the solid waste crisis-and that the public continues to perceive plastics as the main villain-Monday's plenary speaker, Pierre Choquette, president of Novacor Chemicals Plastics Division, called for a "top to bottom" activist approach for changing the image while communicating accurate information about the industry. To properly educate the public, Mr. Choquette said, the industry must develop and publicize complete data on the cradle-to-grave life cycles of all plastic products, while continuing to eliminate waste and employ source reduction. He noted, "If recycling is the hook' that will change perceptions about the environmental compatibility of our products ... then we all had better get involved in the process." Individuals should not only get involved in recycling, he advocated, but also act as the local plastics "experts"-sources of accurate information, and instructors reminding the public of the jobs and other benefits provided by the industry.

Three Critical Issues Environmental concerns were the first of three "Critical issues" discussed by Tuesday's plenary speaker, John L. Tuley, vice president and general manager of Monsanto Chemical Co.'s Plastics Division. Mr. Tuley foresees a solution emerging that consists of perhaps "three parts source reduction, two parts recycling, and one part each of incineration, landfill, and degradability"-but only after slow progress in many areas, ranging from product redesign to recycling methodology to public education.

Rationalization, the second issue, was defined as "a certain winnowing out" of companies as industries mature. Here Mr. Tuley advised adopting clear ideas and sound strategies for differentiating a company's products and providing customers with high levels of technical support and service. He also discussed the importance of intra-industry relationships, in the form of business alliances and joint ventures.

Finally, Mr. Tuley suggested that the responses to the third critical issue, how to maintain and improve quality, are decentralization, so that workers help decide the best procedures, and continued education, so that workers have the flexibility to adopt the latest quality "tools."

International Award Address In Wednesday's plenary speech, titled "Facts and Fiction in Polymer Lore," the 1991 SPE International Award winner, Dr. Walter H. Stockmayer, professor emeritus of chemistry at Dartmouth College, explored the role played by polymer morphology-bulk, chain, or molecular-in various phenomena. In the first example, the history of obtaining a polymer's molecular weight from its solution viscosity, chain shape was not satisfactorily taken into account until the Flory-Fox treatment based on the effective volume derived from light scattering data. However, Dr. Stockmayer noted, the Staudinger Equation (1930) is still valid for rod-like molecules, and he asked if a more exact molecular weight is necessary in plant quality control.

Other examples were the discovery of isotactic polystyrene in insoluble material obtained during styrene polymerization, and the high melt viscosity of polytetrafluoroethylene compared with that of polyethylene. In the latter case, this was falsely attributed to stiffer chains arising from the higher energy required for CF[sub.2] rotation compared to CH[sub.2], until recent NMR and high temperature light scattering data showed the energy barriers to be approximately equal.

Spread the Word Thursday's plenary speaker, Dr. Fred H. Edgecombe, executive director of the Environment and Plastics Institute of Cana a (EPIC), returned to the topic of correcting the public's perception of the role of plastics in the environment, which he partially attributed to a lack of rigor in science education and to a late start by the industry in stating its case. After exploding many of the myths that make up the false image, Dr. Edgecombe suggested that only individuals can help an "industry poised on the edge of the abyss of public disfavor." Rejecting massive advertising as both too expensive and too liable to be perceived by the public as self-serving, he suggested that industry employees adopt a politician, school, or group and provide them with facts, literature, and samples convincing them that our primary goal is a better environment.

Management Involvement Session The quest for advanced technology was put in perspective at ANTEC '91's Management involvement Session on "Injecting Molding for the '90s." Wolfgang Meyer, president, Battenfeld of America, Inc., one member of a panel, pointed out that "statistics show that injection molding machines are purchased with a higher emphasis on cost, compared to technological advances." Investment in advanced technology, he continued, must pay back within a reasonably short period.

Emphasizing "affordable technology," Meyer defined it as increased product quality coupled with decreased product cost. That was the idea that pervaded the session. With or without advanced technology, the need for quality, as an index of survivability, was viewed as inescapable.

Uptime reliability with ease of maintenance, and precision repeatability, now are taken for granted. Advanced technology can often appear irresistible, but sometimes the performance/cost ratio can be too high. Inherent in Meyer's comments was the idea that improving on existing technology can be a route to quality with acceptable economics.

In this context, because of expanding global competition, the lines in the injection molding industry have been drawn. K.H. Pieper, president, Engel Canada Inc. and Engel Machinery Inc., said that "the technology revolution of today will change the way we do business forever." He also added that "we simply have to remember to walk and to think at the same time." This is a challenge to apply technology rationally so that the push for quality will not overwhelm economical practical approaches.

The session also underscored that the "revolution" is not only in such elements as new definitions of quality, higher precision machines, more user-friendly control systems, and computer-integrated manufacturing. Other factors are the trend to creating early and close working relationships; resin consistency; and the need to build a base of informed, quality conscious management, design, and production personnel. With this kind of functional support, injection molding and advanced technology can accommodate to a practical pace that would be more acceptable in the marketplace. This seems to be exactly what is happening.

Super Session The second annual Super Session, on global recycling, revealed numerous opinions, among the expert panel and the audience, on how to cope with problems of solid waste management. Dr. Ramani Narayan, senior scientist, Michigan Biotechnology Institute, and professor of chemical and biochemical engineering, Michigan State University, stressed that plastics and organic waste should never end up in a landfill to be entombed for posterity. They should be reclaimed, recycled, composted (biodegraded), or incinerated. A proper mix of all these approaches is needed to effectively manage polymer waste."

Technical, economic, geographical, and local environmental factors, Dr. Narayan added, will dictate the hierarchical order of the waste disposal approaches to be adopted. He particularly emphasized the necessity to design new biodegradable plastics that break down under appropriate environmental conditions, just like their organic (lignocellulosic) counterparts.

Efficiently utilizing pyrolysis, to extract the abundant BTU energy available in plastics, was presented as another option that deserves more attention.

Rinzo Iijima, Plastics Waste Management Institute, Tokyo, described Japan's ongoing 20-year emphasis on incineration. He indicated that 640 large installations are now incinerating 82% of the wastes generated throughout Japan.

Dr. Leonard H. Drexler described SPE's efforts, including those of the growing Recycling Division, in education, and in the promotion of technical solutions involving plastics recycling.

The audience expressed a full range of opinions regarding the "best" approaches; the levels of involvement of both government and industry; and individual behavior and commitment. There was no doubt among the panel and audience, however, that in spite of the many alternatives and as yet insufficient focus, global recycling is a "sleeping giant" that is beginning to stir-out of mounting necessity.

Technical Program More than 600 technical papers, a record number, were delivered at ANTEC '91. A few of the many that presented newer techniques or materials are described below. * In "Gas Injection Molding: Structural Application," S. Shah and D. Hiavaty of the Inland Fisher-Guide Division of General Motors used a case history of their successful development of an automotive window guidance channel (an award winner at the 1990 SPI Composites Conference) to provide an update on this technology. The authors turned to gas injection after finite element analysis suggested a design that would lead to warpage and dimensional instability problems after conventional injection molding. With only rudimentary part/tool design guidelines available, much trial-and-error work utilizing CAD and short shots was done on both basic processes, i.e., gas through nozzle and gas through cavity. Complete hollow cross sections and uniform wall thicknesses were achieved only with the gas-through-cavity process. Simple mold flow simulations were not helpful, but a program incorporating gas flow (AC Technology) showed promise. More details on both processes and part/tool design were given by Shah in the following paper, "Gas Injection Molding: Current Practices." * Design flexibility, particularly resulting from the ability to incorporate thick and thin walls in the same part, was emphasized by I.R. Baxi, Sajar Plastics, Inc., in "Design Guidelines: Gas Injection Technology." Guidelines for section thicknesses, variable wall sections, ribs, bosses, and gussets were presented. Baxi and Shah both emphasize the importance of designing the part for the process, although a computer housing was shown that was made on an existing structural foam tool converted to Sajar's Nitro-jection process. * Two groups used similar apparatuses to study polymer blending-an instrumented laboratory internal batch mixer equipped with a glass bottom through which the mixing process was videotaped. C.-K. Shih, Du Pont Engineering, reported in "Fundamentals of Polymer Compounding-Part II: Simulation of Polymer Compounding Process" four characteristic physical states in the mixing of rubber/plastic combinations from solid pellets into a cohesive melt blend. These are: I. elastic solid pellets; II. soft and deformable solid; III. transition material; and IV. viscoelastic fluid. In state III, a phase inversion occurs where the plastic becomes the continuous phase. * K. Min and K.G. Suh of the University of Akron, in "The Fundamental Studies of Dynamically Vulcanized Blends of Polymethyl Methacrylate and EthylenePropylene Diene Rubber in an Internal Mixer," identify five regimes in the mixing of unvulcanized homopolymers and blends: 1. powdery; 2. stretch and tear; 3. soft and hard band; 4. hand bagging; and 5. sheeting out. For unvulcanized blends, a phase inversion occurs in going from regimes 2 to 3 when the PMMA becomes the continuous phase after it melts. In curing EPDM rubber, a reversion to the powdery form is observed after 40 sec of mixing, followed by only a reduction in powder particle size. The sequence of introduction of the curing agents and the PMMA was important in controlling the level of curing, phase morphology, and the mechanical properties of the dynamically vulcanized blends. * In "Experimental Study of Distributive Mixing in a Co-Rotating Twin Screw Extruder," E Burbank, F. Brauer, and P. Andersen, Werner & Pfleiderer Corp., studied the effects of mixing elements [narrow kneading disks (KB) vs. three types of turbine mixing elements (TME)] and mixing bank configurations on the difficult problem of mixing a low viscosity additive into a high viscosity polymer. In separate experiments, two silicone oils and three low viscosity additives (two incompatible with HDPE) were added downstream to the plasticized 0.7-MI HDPE in a ZSK-40 extruder. TME distributive mixing elements were found to be about twice as effective for incorporating incompatible additives than the KB elements, and a greater degree of fill in the mixing bank improved the distributive mixing intensity. Increasing the number of mixing banks increased the maximum incorporation level, but with a decreasing return for each bank added. Similar results were found with 1.0-Ml LLDPE and 13.5- and 3.5-MFR polycarbonate. * J. Denault and T. Vu-Khanh, National Research Council of Canada, in "Optimization of the Processing of PEEK/Carbon Composites," used DSC to study the melting and crystallization behavior of the PEEK matrix in a prepreg tape and two commingled hybrid yarn systems (one with unsized yarn, the other with sized yarn), all with AS-4 graphite fibers. Plots of the temperature of the onset of crystallization (T[]) vs. melting temperature (T[sub.m]) of compression molded plaques first showed a drop in T[] at low T[sub.m] as the crystalline entities remaining in the matrix melt, followed by a plateau region in which all such regions are melted, and then a high temperature region with a further drop in T[] corresponding to matrix degradation. PEEK, the prepreg, and the unsized fabric system exhibited similar behavior, but the sized fabric system showed a very short plateau at lower T[], attributed to the promotion of matrix degradation by the sizing. Molding must be carried out at T[sub.m]s in the plateau regions to ensure good composite properties. Microscopy of fracture surfaces showed good fiber-matrix adhesion for the prepreg tape, good adhesion for the unsized fabric only when molded at high temperatures, and poor adhesion for the sized fabric because of the degradation of the sizing at molding temperatures. * In "Understanding the Mechanical Behavior of Long Fiber Reinforced Injection Molded Polypropylene," A. Bouti and B. Fisa, Ecole Polytechnique de Montreal, characterized plaques made from commercial materials on an injection press modified to minimize fiber degradation. The long fiber (12.5 mm) materials had the same skin core structure as the short fiber analogs, i.e., fiber orientation parallel to flow in the skin and perpendicular to flow in the core. However, many bent fibers were found in the core, particularly in thick sections, limiting the ability of the materials to shrink across the thickness during cooling, and causing voids. This caused significant porosity in the inner layers, leading to more pronounced mechanical property anisotropy and poorer weldline strength than found in short fiber moldings. * A. Miyake, H. Abe, and S. Aoto of the Sekisui Chemical Co., Ltd. (Japan), described "A New Coating Material: Thermosetting Film" consisting of acrylic copolymer polyols and blocked and unblocked (for some precure crosslinking) isocyanates. The solventless coating films are soft and extensible for application to 3-D substrates and cure to a paint-like hard coat. Film properties can be varied by varying the M[sub.w] and T[sub.g] of the acrylic polyol and the extent of precure crosslinking. Both a clearcoat and a two layer film of a clear over a pigmented (white or red) layer showed good gloss, hardness, chemical resistance, adhesion to a variety of difficult substrates, and little change in appearance after accelerated weathering. * T. Sakai, K. Nakamura, S. Inoue, and Y. Sumihiro, of The Japan Steel Works, reported on the "Application of Reactive Processing to Stampable Sheet of Toughness Improved Unsaturated Polyester." Solid unsaturated polyester and acrylonitrile-butadiene rubber are fed into a co-rotating twin screw extruder. Bifunctional oligomer or styrene monomer is added at a second feeding port to reduce the viscosity of the molten mixture. Radical initiator is added from a third feeding port, and the molten extrudate is then spread over glass mats and pressed to impregnate the fibers. After cooling, the stampable sheet is molded and cured in a hot press. Products have physical properties approximately equivalent to glass-mat reinforced polypropylene stampable sheet and higher heat resistance. * "Partial-Aromatic, Amorphous Polyamides and Blends Thereof-Properties, Processing, Applications," as described by P. Maskus, EMS Chemie AG (Switzerland), are made with aromatic monomers such as terephthalic and isophthalic acids and can be used neat or in blends and alloys. PAPAs have a high melt viscosity, making them easily extrudable, injection moldable, and blow-moldable. Products are transparent, even in thick sections, and after absorbing moisture, are stiff, and have adequate chemical resistance. The oxygen permeability of films increases with increasing relative humidity, making them interesting candidates for coextruded food packaging. Impact modifiers can be used to produce blends and alloys with high stiffness and toughness that maintain their properties after moisture absorption. Polyamide blends for flexible products and mineral- and fiber-reinforced grades that offer good surface quality and low warpage are available. * "New Silicone Modifiers for Improved Physical Properties and Processing of Thermoplastics and Thermoset Resins" are described by J.W White, P.G. Pape, D.J. Romenesko, T. Imai, and Y. Morita of Dow Corning Corp. Silicone elastomers having exceptional thermal stability are made by emulsion polymerization in micron-size spherical powder form. When they are added to thermosets, the thermal stability and very low particle size of the silicone elastomers provide thermal stress-crack resistance in severe thermal cycling environments such as automotive under-the-hood applications. High molecular weight silicone fluids are known to provide better lubricity and release characteristics to thermoplastics than low molecular weight silicone fluids, but both are difficult to disperse. Pelletized concentrates of up to 50% of a finely divided high molecular weight silicone gum dispersed in common thermoplastics such as olefinics, styrenics, polyamide, and acetal have been recently developed. They offer the advantage of high molecular weight and are readily dispersed without specialized equipment.

The full conference proceedings are available from the SPE Publications Department. Member price is $140; nonmember, individual, $160; corporate, institution, or library, $200.

Exhibitors The following is an overview of products and technologies shown by ANTEC exhibitors:

Accurate Color, Inc., detailed its services in the areas of custom coloring and compounding. The firm's Full Scanning Dispersion Grating Spectrophotometer interfaces with a sophisticated computer to perform both quality control and color matching. A technical service laboratory employs instruments such as an accelerated weathering tester, an extrusion plastometer, and a tensile tester to evaluate the processing performance and physical properties of plastics. Accurate Color, Inc., 120 West Dr., Lodi, OH 44254; (216) 948-2035; Fax (216) 948-4344.

Adell Plastics, Inc., highlighted its capabilities in custom compounding of specialty thermoplastics. Reactive extrusion, formulation of elastomer-olefin blends, and removal of solvents and monomers from polymers are some of the services the firm provides. Adell also recycles engineering resins and compounds additives by liquid injection. Adell Plastics, Inc., 4350 Annapolis Rd., Baltimore, MD 21227; (301) 789-7780; (800) 638-5218; Fax (301) 789-2804.

Advanced CAE Technology, Inc., featured its C-Mold CAE software, particularly innovations to programs that simulate filling, postfilling, and cooling of molds. The firm's C-Flow package, for balanced cavity filling, now uses artificial intelligence techniques to predict the locations of weld lines and air traps. The C-Cool program generates information such as a theoretically possible minimum cooling time and the average temperature of the mold-melt interface; it is now capable of handling hot and cold runners while providing a full transient analysis. The company also offers an automated instrument-the K-System II-that measures thermal conductivity, at temperatures ranging from 20[deg.]C to 425[deg.]C, within a span of 30 sec. Advanced CAE Technology, Inc., Warren Road Business Park, 31 Dutch Mill Rd., Ithaca, NY 14850; (607) 257-4280; Fax (607) 2576355.

Air Products & Chemicals, Inc., featured its line of Vinex thermoplastic polyvinyl alcohol resins. The water-soluble resins are said to possess the chemical, physical, and mechanical properties of polyvinyl alcohol (including biodegradability) and the melt processability characteristics of conventional thermoplastics. They can be extruded or coextruded into cast or tubular blown film for packaging applications; they can also be injection molded or blowmolded into water-soluble bottles. Articles that have been fabricated from the resins exhibit properties such as high tensile strength, favorable adhesion to cellulosics, heat sealability, and resistance to solvents, grease, and oils. Air Products & Chemicals, 7201 Hamilton Blvd., Allentown, PA 18195-1501; (215) 4818932; Fax (215) 481-3434.

Arizona instrument Corp. showed its line of Computrac Moisture Analyzers, which include the TMX and MAX Series. The TMX provides results at levels down to 0.01%; the MAX, at levels down to 0.1 %. Both instruments extract moisture from the testing sample by heating it at a constant programmable temperature. They then calculate the percent moisture by measuring the change in weight of the cell as the moisture is collected. Results are displayed on a large LED readout. Arizona Instrument, 1100 East University Dr., Tempe, AZ 85280; (800) 528-7411; Fax (602) 731-3434.

Arkansas Power & Light Co. distributed a location guide featuring information about Arkansas' plastics industries, resources and utilities, transportation network, and business climate. The company used the theme "Arkansas works" to describe the advantages of relocating a plastics plant to the state. Arkansas Power & Light Co., P.O. Box 551, Little Rock, AR 72203; (501) 3774461; Fax (501) 377-5867.

Atlas Electric Devices/Custom Scientific instruments, Inc., offers a Melt Elasticity Indexer (MEI), which records the elasticity of a polymer melt by measuring its deformation recovery as a function of time. The device can print out a report of tabulated data or display the information as a plot of recovery vs. time. The amount of recovery for a given period of time may then be selected as an index of melt elasticity for purposes of quality control. The firm also featured information on various other products, such as CS-237 Cone Calorimeter, the CS-195 Radiant Panel Apparatus, and the CS-19M Flammability Tester. Atlas Electric Devices/Custom Scientific Instruments, Inc., 4114 N. Ravenswood Ave., Chicago, IL 60613; (312) 327-4520; Fax (312) 327-5787.

Bay Resins, Inc., offers a series of polycarbonate molding compounds reported to be suitable replacements for metal in applications involving industrial, military, consumer, medical, and supporting goods products. The compounds, which contain glass fiber, carbon fiber, and PTFE lubricants, offer increased strength, rigidity, and dimensional stability; they are also said to feature favorable dielectric insulating properties. Among them are PC1100G10, a 10% glass reinforced polycarbonate used in frames and appliance housings, and PC-1100H30, a 30% carbon fiber reinforced polycarbonate used in components of business machines. The firm also offers a series of polybutylene terephthalate (PBT) molding compounds designed for parts requiring heat and chemical resistance and exceptional toughness. Bay Resins, Inc., Route 313, P.O. Box 630, Millington, MD 21651; (301) 928-3083; Fax (301) 928-5412. Berstorff Corp. provided graphic displays of its ZE and ZE-A twin screw extruders and its ZE-KE extrusion line. The lesser screw diameter and lesser depth of screw flights of the standard ZE twin screw extruder are advantages to production that requires high shearing forces. The ZE-A extruder, which features a larger screw diameter, larger flight depth, and higher conveying volume, is used in production requiring low shearing forces. The ZE extruder compounds and degasses, whereas the KE extruder builds up the pressure required for discharging and pelletizing; the two systems can be combined for the manufacture of compounds that are sensitive to temperature and shearing. They can be arranged parallel to each other, connected by a heatable melt-conducting line, or flanged together at a right angle. Berstorff Corp., 8200-A Arrowridge Blvd., P.O. Box 240357, Charlotte, NC 28224; (704) 5232614; (704) 523-4353. BFGoodrich Specialty Polymers & Chemicals Division featured its line of piperazinone-based Good-rite hindered amine light stabilizers. The products are used to stabilize polymers from the degrading effects of exposure to thermooxidation and high temperature processing, as well as exposure to light. They include the 3150 stabilizer, said to achieve high levels of performance in UV aging and to perform particularly well in pigmented formulations; the 3034 stabilizer, reported to prevent yellowing after exposure to gamma radiation; and the 3159 stabilizer, said to demonstrate superior performance when exposed to oven aging at 140[deg.]C. The firm also detailed its line of Hycar Reactive Liquid Polymers (RLPs)-functionalized butadiene homopolymers and butadiene/acrylonitrile copolymers that are used as elastomeric modifiers for thermoset particularly epoxy) resins. BFGoodrich Specialty Polymers & Chemicals Division, 9911 Brecksville Rd., Cleveland, OH 44141-3247; (216) 4475733; (800) 331-1144; Fax (216) 447-5770. Bohlin Reologi, Inc., displayed its CSM Controlled Stress Melt Rheometer for reproducible measurements of creep and recovery and oscillation. The instrument uses PC-compatible software to automatically calculate, from creep retardation data, the steady state viscosity at a specified shear rate. Key features include a powerful drag cup motor and electrically heated fixtures that permit measurements at temperatures ranging from ambient to 400[deg.]C.

The firm's VOR Melt Rheometer provides rheological characterization of polymer melts and solids. It features a forced-gas dual loop control oven that is said to minimize overshoots and offsets between oven setpoint and sample temperature. Bohlin Reologi, 2540 Rte. 130, Suite 105, Cranbury, NJ 08512; (609) 655-4447; Fax (609) 655-1475.

BP Chemicals exhibited its Polybond line of functionalized polyolefin grades. The company has extended the application of the grades, which are grafted with maleic anhydrid or polyacrylic acid, beyond their conventional use as additives for chemical coupling-new applications include their use as adhesive grades to provide bonding in metals, and as compatibilizers for polymer alloys. They are also used to provide adhesion to polyolefins and polar substrates such as nylon EVOH, and polyurethanes. BP Chemicals, Newburg Road, P.O. Box 400, Hackettstown, NJ 07840; (201) 850-7237; (201) 852-1100; Fax (201) 850-7282.

The PL-2000 Plasti-Corder, displayed by C.W. Brabender Instruments, Inc., is a modular computerized torque rheometer that offers up to eight temperature control zones. Designed to work with any IBM-compatible computer, the PL-2000 contains a "watchdog circuit" that shuts down the system when the computer goes off-line, eliminating the potential for damage that can result if the operator is not watching the system and the temperature controllers are calling for heat. It also features an 80-column color printer. C.W. Brabender Instruments, Inc., 50 East Wesley St., South Hackensack, NJ 07606; (201) 343-8425; Fax (201) 3430608.

L.J. Broutman & Associates, Ltd., offered information on its testing and analytical services, which include mechanical, creep, and fatigue testing, thermal and infrared analysis, chromatography, optical microscopy, and rheology. The firm also provides consulting and laboratory services in the fields of product design and performance evaluation, polymer degradation studies, failure analysis, and fractography, L.J. Broutman & Associates, Ltd., 3424 S. State St., Chicago, IL 60616; (312) 8424100; Fax (312) 842-3583.

Buss (America) inc. illustrated its Buss-Kneader compounding lines for mixing, reinforcing, or filling of engineering thermoplastics. The compounders include the MDK/E-140 line for the compounding and pelletizing of glass fiber reinforced and filled engineering plastics; the WKG 10-14 line for continuous compounding and pelletizing of PVC cable compounds, and the PLK-line 100 for continuous compounding of powder coating materials. Buss-Kneader lines are said to provide controlled processing temperatures, thorough mixing under low pressure, and complete wetting of fillers and fibers. They are also reported to cause minimum thermal degradation, particularly in the case of linear polyesters. Buss (America) Inc., 230 Covington Dr., Bloomingdale, IL 60108; (708) 307-9900; Fax (708) 3079905.

BYK-Gardner, Inc.'s Color Machine spectrophotometer features a built-in glossmeter that permits simultaneous measurement of color and 60' gloss on the same sampling area. The instrument averages, stores, and recalls gloss readings, which are reported on the same screen as the color values. Additional functions include tolerancing and the production of spectral data, plots, and multiple spectral curves. Another product, the portable micro-TRI-gloss glossmeter, measures 20[deg.], 60[deg.], and 85[deg.] gloss on plastics, paints, and coatings.

The firm also offers the XL-211 Hazegard hazemeter, which measures and displays the percentage of transmission haze in films and other transparent materials. Applications include colored plastic and glass for sunglasses; laminated windshields; and clear plastic films for packaging. BYK-Gardner, Inc., 2435 Linden Lane, Silver Spring, MD 20910; (301) 495-7150; (301) 585-4067.

Cabot Corp. displayed the following technical reports: S-39, "Conductive Carbon Black in Plastics"; S-114, "Carbon Blacks for Protection of Plastics Exposed to Ultraviolet Light"; S-131, "Carbon Black Dispersion"; S-134, "Special Blacks for Plastics"; and S-136, "Carbon Blacks for Specialty Applications." Cabot Corp., 157 Concord Rd., Billerica, MA 01821; (508) 670-8005; Fax (508) 670-7035.

Camoplast, Inc., graphically displayed a variety of injection molded and compression molded products for the transportation, business equipment, and consumer appliance industries. Among the featured products were injection molded polypropylene parts for automobiles; a polyester cowl vent grill; polyethylene and polycarbonate components of snowmobiles; photocopier components manufactured of polycarbonate, GE Noryl, and ABS; and refrigerator and freezer components manufactured of polystyrene or ABS. The firm also outlined its capabilities in the areas of engineering, finishing, and QC. Camoplast, Inc., 425 10th Ave., Richmond, Quebec, Canada JOB 2HO; (819) 826-5911; Fax (819) 826-5061.

Canada Institute for Scientific and Technical Information (CISTI) offers numerous services to assist Canadian researchers in procuring scientific and technical information. Researchers can borrow books and obtain photocopies of journal articles from an extensive collection of literature; they can also use an online information retrieval system to order literature or find information on current research projects. Reference services include a customized literature search service that lists references on various topics, and a general reference service that furnishes technical information on specific industrial processes, analytical procedures, and the toxicity of compounds. Canada Institute for Scientific and Technical Information, Bldg. M55, National Research Council, Ottawa, Ontario, Canada K1A OS2; (613) 9939688.

In accordance with its mission to promote technological advances that will further the international competitiveness of the Canadian plastics industry, the Canadian Plastics institute distributed a number of brochures designed to assist plastics processors throughout Canada. Its "Comparison of Technologies," volumes I (Injection Molding vs. GMT Forming) and II (Thermoforming vs. GMT Forming vs. SMC Compression Molding), reviews the advantages and disadvantages of several processes, and is of particular benefit to processors who are interested in entering new markets. "The CPI Guide to Government Funding: How to Tap the Resources" helps Canadian processors determine if government funding is available for specific technological projects. The Institute also distributed a list of its available publications, which include, in addition to the above, "High Performance Engineering Thermoplastics," Blends and Alloys," and "EMI Shielding." Canadian Plastics Institute, 1262 Don Mills, Ontario, Canada M3B 2W7; (416) 4413222; Fax (416) 441-1208.

Century Specialties, Inc., graphically displayed samples of replacement screws, shafts, and segments for single and twin screw extruders; it also highlighted some of the processes used in their manufacture, such as heat treating, ion nitriding, and CNC turning, milling, and grinding operations. For manufacturers of twin screw extruders, the firm provides standard and specially designed screw elements and kneading blocks in nitrided alloys that resist corrosion and wear. Sizes range from 20 to 300 mm. Century Specialties, Inc., 2410 Aero Park Court, Traverse City, MI 49684; (616) 946-7500; Fax (616) 947-4456.

Kenics Heat Exchangers, offered by Chemineer, Inc., incorporate the design of the Kenics static mixer element in each tube. To reduce film buildup on their inside walls, the heat exchangers employ radial mixing; the action reportedly combines with an internal fin effect to increase the inside film coefficient to as much as five times that of conventional tubes. Process advantages include plug flow characteristics, which reduce residence time, and the elimination of radial temperature gradients, which minimize potential thermal degradation.

Thermogenizers for post-extrusion mixing, preheaters for devolatilization, and Kenics Static Mixers are among the other of the company's products. Chemineer, Inc., 125 Flagship Dr. North Andover, MA 01845; (508) 687-0101; Fax (508) 687

Chromium Industries, Inc., featured its Chrom/Slik composite surface coating for folls and cylinders. The coating combines the durability and thermal conductivity of impervious chrome with the nonstick properties of Du Pont Teflon; it is formed by electroplating chromium to a textured base, and then applying Teflon and polishing the surface to the required finish. Reported to be oil and water repellent, nonabsorbent, and highly corrosion resistant, the coating can be polished to surface finishes ranging from 4 to 32 RMS. In addition to rolls and cylinders, applications include dies, guides, mixing blades, and various other mechanical components.

The firm also graphically displayed a cutaway view of a heat transfer roll, and various other surface finishes-including the Flawless Mirror, Soft Matte, and Sani-Plate finishes. An electroless nickel plating, Sani-Plate reportedly can be finished in matte textures or to surface finishes from 2 to 4 RMS. Chromium Industries, Inc., 4645 W Chicago Ave., Chicago, IL 60651; (312) 287-3716; Fax (312) 287-5792.

CMC Technologies, Ltd., detailed its line of piezoresistive sensors for monitoring and controlling in-cavity melt pressure, clamp force, and tie bar strain in molding operations. The sensors withstand shock and vibration to 5000 g and are also suitable for measurement in casting, stamping, and other highly dynamic processes.

The firm also has an extensive line of digital and analog transducers that are capable of simultaneously measuring pressure and temperature. The instruments feature a laser-welded stainless steel housing, modular design, and numerous configurations for pressure and electrical ports. CMC Technologies, Ltd., 31 Stonybrook, Buffalo, NY 14221-1837; (716) 668-0816; Fax (716) 636-0411.

CRASP (Centre de recherche appliquee sur les polymires), the Applied Research Center for Polymers, distributed a report that included a summary of research activities for 1989-1990. Recent projects include research in analysis of blown film; processing of reinforced plastics; extrusion die simulation; and damage tolerance of high performance composites. At the time of the report, some 50 graduate students were preparing Master's or PhD theses in the following areas: structure analysis of plastic composites; characterization of polymer systems; materials development; polymer processing; and gears performance and tribology. The Center, established at the Ecole Polytechnique in 1988, is one of Canada's major facilities for polymer research, CRASP, Case Postale 6079, Succursale A, Montreal, Quebec, Canada H3C 3A7; (514) 340-4629.

Cyprus Industrial Minerals issued several technical bulletins highlighting the comparative advantages of using talc (hydrous magnesium silicate) products for particular applications, such as nucleating agents for semicrystalline polymers and antiblocks in polyolefin films.

In low concentrations of 2500 to 10,000 ppm, talc reportedly offers favorable optical and mechanical performance in clear films. It also offers good mechanical properties, at higher concentrations of 3% to 5%, in colored films. The firm's Stellar 500, a 3.5-micron Australian talc used to prevent blocking in thin polyethylene films, is reported to be softer and less abrasive than other commonly used antiblock minerals; its performance at three different concentrations is compared to that of 3-micron calcium carbonate and calcined diatomite in Technical Bulletin 012191.

Mistron Super Frost, an ultrafine talc that is also a strong crystal nucleant, can be used to increase the crystallization temperature of crystalline and semicrystalline polymers such as polypropylene, polyethylene, nylon, PET, and CPE. The higher crystallization temperatures can result in faster cycle times. Technical bulletin 012191 compares the performance of the product to other minerals such as calcium carbonate and calcined diatomite. Cyprus Industrial Minerals, 8985 East Nichols, Suite 300, Englewood, CO 80112; (303) 643-5431; Fax (303) 7998926.

The Injectiweld process, offered by Drader Manufacturing Industries Ltd., uses heat and pressure to produce joints or welds in thermoplastic materials. Heat from the welder tip plasticizes the area to be welded; molten plastic is then subsurfacely injected (under high pressure) into the area. As the molten stream meets the resistance of the material in the welding area, sufficient pressure is created to force complete fusion. Because the orifice of the welder tip is submerged, surface preparation is unnecessary and virtually no oxidation occurs. The process is suitable for fabrications involving plastic sheet and pipe. Drader Manufacturing Industries, Ltd., 241-76 Ave. N.W, Edmonton, Alberta, Canada T6P 1P2; (403) 440-2231; Fax (403) 4402244.

Dynisco, Inc., featured its MIT 900 Infrared Melt Temperature Transducer, a "nonintrusive" instrument that reportedly provides fast-response measurements. The transducer features an infrared probe and rigid stem. The firm also displayed melt pressure transducers with measurement ranges to 30,000 psi; hydraulic transducers for injection molding, robotics, machine tools, and hydraulic applications; flush diaphragm transducers; and electronic pressure gages, indicators, and controllers. Dynisco, Inc., 4 Commercial St., Sharon, MA 02067; (617) 784-8400; Fax 617) 7842902.

Eastman Chemical Co. detailed its line of Aquastab stabilizers, based on dispersions of various polymer additives in an aqueous emulsion of a low molecular weight oxidized polyolefin wax. The stabilizers include various additives designed to provide protection from degradation, static buildup, and acidic catalyst residues. They also incorporate nucleators, antiblocking agents, process lubricants, and inorganic fillers. Their applications include new process polyolefin resins-after being sprayed on the polymer surface in a process reactor, they will reportedly adhere to the surface throughout the rigors of airveying, shipping, and storage. Eastman Chemical Co., P.O. Box 431, Kingsport, TN 37662; (800) 327-8626; (212) 930-7697.

The Economic Development Office of the Montreal Urban Community has made available a brochure that contains an economic profile of the greater Montreal region and summarizes key advantages of locating a plant site in the area. The report provides information on the region's human resources, educational and research institutions, infrastructure, and business environment. The Office also offers a booklet, "Plastics: Molding the Future in Montreal," that describes the extensive network of R&D centers in the region. Economic Development Office of the Montreal Urban Community, 770 Sherbrooke St. West, Suite 1210, Montreal, Quebec, Canada H3A 1G1; (514) 280-4255; Fax (514) 2804266.

EM Industries, Inc., exhibited its line of Afflair Lustre Pigments-flat mica platelets coated with titanium dioxide, iron oxide, or a combination of both. When used in combination with carbon black, the pigments produce numerous shades of bronze and copper; metallic shades from pale silver to aluminum; and a range of golds from light to antique. The nontoxic pigments are supplied as an unextended dry powder; they do not conduct electricity and are reportedly capable of withstanding temperatures up to 800[deg.]C. Applications include gel coats, flexible film, calendered sheets, and products obtained through injection molding, thermoforming, and profile extrusion. EM Industries, 5 Skyline Dr., Hawthorne, NY 10532; (914) 592-4350; Fax (914) 5929469. Enflo Canada, Ltd., a processor of TFE (tetrafluorethylene) resins, featured its Enflo Super PTFE material. Capable of being formed into rods, cylinders, sheets, and tapes, the weldable material is said to possess physical properties superior to those of standard virgin PTFE: lower deformation under load, higher dielectric strength and elongation at break, greater compressive strength, and superior creep resistance. Enflo Canada, Ltd., 76 Industrial Rd., Grand Falls, New Brunswick, Canada EOJ 1MO; (506) 473-3711; Fax (506) 473-2307. Environment and Plastics Institute of Canada (EPIC) offered information concerning the effects, both measured and perceived, of plastics on the environment. The literature discusses issues such as degradability, recycling, source reduction, energy recovery, and the benefits of using plastic bottles, grocery bags, and retail carry-out sacks. Environment and Plastics Institute of Canada, 1262 Don Mills Rd., Toronto, Ontario, Canada M3B 2W7; (514) 499-0500; Fax (514) 4999258. For those interested in reviewing papers of ANTECs past, the SPE Extrusion Division Board of Directors has an extensive database dating to 1956. The ANTECEXT database is available in 5-1/4- or 3-1/2-in disks and may be run on an IBM-compatible computer with Professional File Software. SPE Extrusion Division Board of Directors, 88 Country Downs Circle, Fairport, NY 14450; (315) 986-5056; Fax (315) 986-5033.

Firestone Synthetic Rubber & Latex Co. outlined the properties of its Stereon block copolymers. The materials include Stereon 720A and 730A-impact modifiers for polystyrene, ABS, and engineering resins; Stereon 840A impact modifiers for HIPS and polyolefins; and Stereon 881, a clear injection molding resin for food packaging and medical applications. Stereon 840A can also be used as a base polymer for hot-melt and pressure-sensitive adhesives. Firestone Synthetic Rubber & Latex Co., 381 W. Wilbeth Rd., Akron, OH 44301; (216) 379-6538; (216) 379-6018; Fax (216) 3797483.

Fluid Dynamics International, Inc., demonstrated its FIDAP fluid dynamics analysis package, a finite element program for analyzing incompressible viscous fluid flow. A new feature of the software package-Revision 6.0-introduces a technique for solving flow equations that is said to dramatically decrease run time and storage requirements. Because of the new "solver," large problems that previously were handled only on supercomputers can now be solved on workstations. Revision 6.0 also introduces a new Graphical User Interface, said to simplify the use of the system, and several new capabilities that include 3-D extrusion modeling, residence time calculations, and enhanced treatment of multiple chemical species. Fluid Dynamics International, Inc., 500 David St., Suite 600, Evanston, IL 60201; (708) 491-0200; Fax (708) 869-6495.

Goettfert, Inc.'s Bypass Rheograph, a capillary rheometer that uses the principle of single pump measurement, features a compact design that reportedly provides flexibility of installation. The flexibility permits a short transfer line, minimizing residence time and measurement lag. An integrated melt feeder provides a representative melt stream. Regardless of the form of the test sample (pellets, powder, or granules), the rheometer measures viscosity function and automatically determines melt flow index values at variable weight conditions.

The firm also offers the Melt Indexer Model MPS-E (which permits automatic testing, at up to four different weights, with a single barrel filling) and the MlROBO testing system for determining melt flow index of PE, PP, and PS materials. Goettfert. Inc., 488 Lakeshore Pkwy., Rock Hill, SC 29730; (803) 3243883; Fax (803) 324-3993.

Goodyear Tire & Rubber Co. featured its Chemigum TPES, used in numerous automotive applications including side body molding, weather stripping, door and window seals, and exterior gasketing. The TPES, which can be coextruded with rigid plastics, bond easily to glass or other substrates; they are said to possess weatherability, elasticity over a broad temperature range, and resistance to abrasion and flex fatigue. Industrial hoses are among their nonautomotive applications. Goodyear Tire & Rubber Co., 1144 E. Market St., Akron, OH 44316; (216) 796-3258; Fax 216) 796-9024.

The Rheocord 90 Torque Rheometer, offered by Haake/Fisons Instruments, inc., can evaluate the flow properties of a wide variety of thermoplastics, including polyolefins, styrenes, acrylics, and polycarbonates. The instrument features an IBM-compatible computer, a maximum operating temperature of 500[deg.]C, and interchangeable load cells that allow the user to select torque ranges. It reportedly characterizes both high and low viscosity materials without sacrificing the sensitivity of the torque. When operating the rheometer with a single or twin screw extruder and a capillary die, the user can easily calculate absolute shear stress and shear rate by means of the appropriate capillary rheology software package. The instrument is also used to characterize thermosetting resins. Haake/Fisons Instruments, Inc., 24911 Ave. Stanford, Valencia, CA 91355; (805) 295-0019; Fax (805) 295-0419.

Himont/Plasma Science presented information on its gas plasma surface treatment systems for the modification of plastics. The systems are designed to increase adhesion in various processes such as bonding, printing, painting, and metalization, Himont/Plasma Science, 353 Hatch Dr., Foster City, CA 94404; (415) 572-9300; Fax (415) 345-0116.

Hobart TAFA Technologies, Inc., distributed information on TAFA spray metal tooling, a prototyping manufacturing process that converts CAD models into spray metal molds and molded parts. The process reportedly produces molded parts within three days; it can be used with various 3-D modeling processes such as stereolithography (3D Systems) and FDM (Stratasys). Applications include thermoforming, structural foam, injection molding, RIM, and blowmolding. Hobart TAFA Technologies, Inc., 146 Pembrook Rd., Concord, NH 03301; (603) 224-9585; Fax (603) 2254342.

Hunkar Laboratories, Inc., featured its DAC-III data acquisition and control system for injection molding machines. The system is reported to be capable of monitoring up to 35 process parameters, including functions of the molding machine, auxiliary equipment, and upstream and downstream processes. It automatically calculates injection velocity profiles and provides automatic shot correction, boost cutoff, cushion control, and packing control. Both retrofit applications and new machinery are among its broad range of applications.

The firm also offers a line of accessories that includes temperature controls, gold standard sensors, and hydraulic servo control valves. Hunkar Laboratories, Inc., 7007 Valley Ave., Cincinnati, OH 45244; (513) 272-1010; Fax (513) 2720013.

Hunter Associates Laboratory, Inc. (HunterLab), offers a line of instruments used by paper mills, automotive manufacturers, and the food and pharmaceuticals industries for measuring color and appearance. The LabScan II Spectro-colorimeter permits circumferential viewing that reportedly minimizes variability when reading directional samples. It features multiple illuminants, color scales, and indices; variable illumination of samples, and menu-driven software that provides unlimited storage of data. The firm's MiniScan is a hand-held spectro-colorimeter that offers a choice of 45[deg.]/0[deg.] or sphere geometry. The instrument, capable of storing spectral and tristimulus sample and standard readings, features utility software for conversion of ASCII files. Hunter Associates Laboratory, Inc., 11491 Sunset Hills Rd., Reston, VA 22090; (703) 471-6870; Fax (703) 471-4237.

IMASS, Inc.'s Dynastat Mark II mechanical spectrometer permits measurement of viscoelastic behavior by means of transient and dynamic tests. The instrument is reported to feature rapid (10 msec) application of load or deformation, and a control stability of one part in 10,000 of the controlled variable. High rigidity of the testing frame and load transducer enhances its utility for testing glassy polymers and composites. By using combinations of transient and dynamic experiments, the operator can extend the range of material behavior measurement to five or more decades. The firm also offers a ZPE-1000 High Rate Peel Test System and a Precision Time-Domain Dielectric Spectrometer. Imass, Inc., P.O. Box 134, Hingham, MA 02018-0134; (617) 982-8096; Fax (617) 982-9647.

Instron Corp. exhibited several new products, including the High Resolution Digital (HRD) Extensometer. Part of an automated testing system that also includes robotics and software, the instrument features an HRD transducer with two measurement ranges. One range is for high resolution of high modulus materials; the other is a longer range for more extensible materials. The extensometer uses an air bearing carriage guidance system that produces low operating force.

Other new products include the Model 4300 Quality Control Test Instrument, which automatically computes parameters such as tensile strength and percent elongation; the Series IX Materials Testing Software, which can prepare SPC/SQC charts in addition to calculating modulus elasticity or flex modulus; and the Model 3119 Temperature Chamber, which provides heating and cooling for both static and dynamic test applications. Instron Corp., 100 Royall St., Canton, MA 02021; (617) 575-5358; Fax (617) 828-2112.

Kayeness, Inc., featured its Energy Absorption Impact Tester, an instrument for determining impact and failure properties of film, sheet, and finished parts. The tester uses a free-falling weight and a piezoelectric crystal force transducer to measure force on a microsecond basis during impact; a personal computer calculates energy absorbed, dart velocity, and sample deformation. Optional features include a cryogenic chamber that permits testing at temperatures to -40[deg.]C. Kayeness, Inc., 115 Thousand Oaks Blvd., Suite 101, P.O. Box 709, Morgantown, PA 19543; (215) 286-7555; Fax (215) 286-9396.

Kenrich Petrochemicals, Ltd., displayed its Ken-React titanate, zirconate, and aluminate coupling agents, which are used to increase the flow and mechanical properties of filled and unfilled thermoplastics. When used in the production of blowmolded HDPE parts, the coupling agents reportedly achieved reductions in cycle times and processing temperatures of 40% and 10%, respectively. Kenrich Petrochemicals Ltd., 140 East 22nd St., Bayonne, NJ 07002; (201) 823-9000; Fax (201) 823-0691.

Killion Extruders, Inc., showed machinery from its broad line of extrusion equipment, including the KN Series heavy duty production extruders. Designed to be operated 24 hrs/day, the extruders feature a double reduction helical gear reducer and screw diameters of 1 to 2-1/2 in. The line also includes the KLV and KTS Series coextruders, which are built to be matched with larger machines in coextrusion applications. They feature screw diameters of 3/4 to 11/2 in, and can use barrels in horizontal, angular, or vertical positions. The firm provides systems for extrusion of cast film and sheet, tubing and profiles, monofilament and multifiber, and blown film. Killion Extruders, Inc., 200 Commerce Rd., Cedar Grove, NJ 07009; (201) 2390200; Fax (201) 239-3061.

Koch Engineering Co., Inc., detailed its Koch Mixing Head, a device for homogenizing melt streams of injection molding machines. The mixing head is designed for installation between the plasticator of an injection molding machine and a conventional nozzle or nozzle tip; it is reported to perfectly disperse color concentrates and other additives. The device is also said to eliminate temperature gradients, thus reducing cooling and cycle times, and reduce variation of part weights. Its features include removable mixing elements and a low pressure drop, which results from its large diameter, short length, and open cross-sectional area.

The Koch Melt Blender, used for homogenizing the melt stream of extruders, is similar to the mixing head in design and method of operation. Its reported benefits include faster extrusion rates and reduced need for colorants and additives usage. Koch Engineering Co., Inc., RO. Box 8127, Wichita, KS 67208; (603) 3562538; Fax (603) 447-2821.

Luwa Corp. presented highlights of its Smarthopper Gravimetric Control System, which combines a gravimetric hopper with a compact microprocessor to control the weight of output of single extrusion lines. By monitoring material usage and extruder line speed, the system can calculate output in lbs/hr or lbs/ft; the information can then be used to control line speed or screw speed so as to maintain yield consistency. The firm also outlined its Expac extrusion pumping system, said to climinate surging and reduce extrudate temperature, and its new Corex pump for rigid PVC compounds. The pump features tapered suction and discharge ports and hardened tool steel bearings, gears, and shafts. Luwa Corp., P.O. Box 16348, Charlotte, NC 28297-6348; (704) 394-8341; Fax (704) 393-8590.

MCP Systems, Inc., markets the MCP Vacuum Casting System-a new system of producing intricate plastic prototypes for TV and computer housings, automotive components, and consumer appliances. The system casts resins inside a vacuum chamber of a silicone mold cavity, which permits the accurate reproduction of thin sections and fine detail. Prototypes can be produced with a surface finish comparable to that of injection molded ABS components.

The firm also described the fusible core technology that is currently being used to produce Ford diesel manifolds in thermoset material. The system produces components with smooth internal surfaces and reportedly permits the production of shapes that cannot be made with conventional tooling. MCP Systems, Inc., 511 Commerce Dr., Fairfield, CT 06430-5541; (203) 367-7761; Fax (203) 368-4082.

Medical Plastic Devices (MPD), Inc., employs clean room injection molding to produce medical devices for the health care and pharmaceutical industries. The firm, which also designs and manufactures molds, uses microprocessor-controlled machinery to manufacture products according to customers' specifications. It also provides a choice of materials and a quality assurance program. Medical Plastic Devices, 161 Oneida Dr., Pointe Claire, Quebec, Canada H9R lA9; (514) 694-9835; Fax (514) 697-7012.

Migrandy Corp. highlighted its manufacture and rebuilding of screws and components for injection molding and extrusion machinery. The firm designs, modifies, and rebuilds screws, barrels, and other replaceable components. It also develops hard-surfacing alloys, made with nickel, tungsten-carbide, and molybdenum, that increase screw life. Resurfacing of bimetallic extrusion and injection barrels, barrel resleeving and honing, and rebuilding of twin screws to withstand highly abrasive glass and mineral processing are among the firm's precision engineering services. Migrandy Corp., 675 Cypress Dr., Merritt Island, FL 32952; (407) 459-0044; Fax (407) 4592641.

McGraw-Hill, Inc.'s Modern Plastics magazine is introducing dataPLAS, a materials database designed to ease the selection of materials by plastics design engineers. The database contains information on the mechanical, thermal, and electrical properties of some 1000 grades of thermoplastics; it also features data concerning chemical resistance, processing methods, and additives and fillers. The system allows the user to generate charts and graphs and employ various methods of analysis during the selection process. Modern Plastics/McGraw-Hill, Inc., Princeton Rd., N-1, Hightstown, NJ 08520; (609) 426-5830; Fax (609) 4265472.

Mold-Masters, Ltd., displayed a hot runner nozzle with a durable tool steel tip. A heater is metallurgically cast into pure copper inside the nozzle-the process is said to eliminate hot spots and prolong the life of the heater. The pure copper core reportedly provides four times the heat conductivity and temperature control of beryllium copper it also functions as a heat sink that helps draw heat out of the gate area, quicken "freeze-off," and cut cycle times. Because of accurate temperature control into the tip of the nozzle, clean gate marks are possible. Mold-Masters, Ltd., 233 Armstrong Ave., Georgetown, Ontario, Canada L7G 4X5; (416) 877-0185; (416) 873-2818.

Monsanto Canada, Inc., exhibited parts produced of its engineering thermoplastic resins, which include Triax Alloys, Centrex ASA, Vydene Nylon, Cabon High Heat Polymer, and Lustran SAN and ABS. The resins are used for applications within numerous markets, including the industrial, automotive, consumer, and pipe and extrusion markets.

The firm also outlined the performance properties of several engineered TPEs of Advanced Elastomer Systems, which combines the TPE capabilities of Monsanto Chemical Co. and Exxon Chemical Co. The TPEs include Geolast, said to provide enhanced oil resistance; Trefsin, reported to exhibit superior permeability resistance; and Dytron, for specialized requirements of the wire and cable markets. Monsanto Canada, Inc., 2330 Argentia Rd., Mississauga, Ontario, Canada L5M 2G4; (416) 826-9222; Fax (416) 826-3119.

MTS Colorimetrie, Inc., outlined the MTS Spectrophotometers, which feature automatic calibration according to selected measuring modes: reflectance, specular included; reflectance, specular excluded; transmission mode; and infrared calibration, 700 to 1200 nms. The spectrophotometers include modular software for color matching and correction. Users can also create a file of the absorption and diffusion features of reference pigments with respect to their concentration. MTS Colorimetrie, Inc., 1370 Don Mills Rd., Suite 210, Toronto, Ontario, Canada M3B 2N7; (416) 5100556; Fax (416) 510-0461.

Nametre Co. featured a working model of a new extrusion viscometer that is designed to provide in-line viscosity measurement upon insertion of the sensor into a standard thermocouple opening. Unlike larger instruments that are placed in the cavity beyond the barrel of an extruder, the device measures viscosity along the barrel during extrusion.

The firm's Viscoliner Model 1810 is a microprocessor-based viscosity controller designed for industrial environments. It features a noise canceling system that permits smooth operation under conditions of vibration. Temperature compensation, in conjunction with an internal thermocouple, automatically corrects viscosity to a value corresponding to a reference temperature defined by the user. Nametre Co., 101 Forrest St., Metuchen, NJ 08840; (908) 494-2422; Fax (908) 4948916.

The National Research Council (Canada) presented literature concerning its full range of programs, which include customized R&D projects and specific testing, analysis, and calibration services. A division of the council, the Industrial Materials Institute, has developed mathematical models that simulate the behavior of polymers during flow and solidification. National Research Council, 75 Blvd. de Mortagne, Boucherville, Quebec, Canada J4B 6Y4; (514) 2838179; Fax (514) 283-5708.

Netzsch Inc. modeled equipment from its thermal analysis line, which includes the STA 409 Simultaneous Thermal Analyzer. The instrument, which features an electromagnetically compensated weighing system, can be equipped with a single hoist or double hoist for two furnaces. Its measuring part has thermostatic control, a feature that eliminates-on the most sensitive measuring ranges-thermal influence of the furnaces on the balance. Netzsch Inc., 119 Pickering Way, Exton, PA 19341; (215) 363-8010; Fax (215) 363-0971.

Olin Chemicals presented information on its Omacide P-10 bactericide-fungicide dispersions, designed to protect PVC products from microbial attack. They have an active ingredient of Zinc Omadine Bactericide-Fungicide (5% minimum), and are specifically formulated for flexible PVC products, such as flooring or shower curtains, that use a plasticizer. Olin Chemicals, 120 Long Ridge Rd., Stamford, CT 06904; (203) 356-2412; Fax (203) 356-2678.

Ontario Die Co. exhibited a vast range of cutting dies for applications that include missile and aircraft components, safety apparel, and automotive assemblies. The firm manufactures steel rule dies, heavyweight dies, custom designed punches, and precision forged dies; it also offers edge treatments and coatings to prolong the life of the dies. Its austempering process reportedly gives the dies a keen cutting edge that will not chip, crack, or roll. Ontario Die Co., 2735 20th St., Port Huron, MI 48061-0397; (519) 576-8950; Fax (519) 576-3670.

Ortech international presented information on its technical consulting and contract R&D services, which it offers to both public and private organizations. The organization focuses on the development and application of six complementary technologies: product engineering, industrial materials, process engineering, technical information, industrially relevant environmental services, and energy systems. Through its services, which include problem solving, testing, and materials analysis, Ortech seeks to foster the development of new products and increased productivity. Ortech International, 2395 Speakman Dr., Mississauga, Ontario, Canada L5K lB3; (416) 822-4111; Fax (416) 823-1446.

Oxford University Press/Hanser Publishers displayed a catalog of textbooks and handbooks on subjects relative to plastics technology, polymer chemistry, and materials science. The subjects cover areas such as processing, analysis and characterization, and polymer degradation and stabilization. Oxford University Press/Hanser Publishers, 200 Madison Ave., New York, NY 10016; (212) 679-7300; Fax (212) 725-2972.

Perkin-Elmer Corp. exhibited its line of plastics analysis instruments, including thermal analysis (DSC, TGA, TMA, and DMA) and Fourier Transform Infrared (FT-IR) equipment. The PC-controlled analyzers offer a wide range of programs for materials analysis and quality control of polymers and composites. Perkin-Eimer Corp., 5349 Rue Ferrier, Montreal, Quebec, Canada H4P 1M1; (514) 737-7575; Fax (514) 737-9726.

Pfizer Inc. Minerals Division exhibited its line of calcium carbonate and talc fillers. Among the former were Hi-Thix 3388, a surface-coated ground limestone reported to have good acid stability; SuperThix 3434, a surface-coated precipitated calcium carbonate suited for polyurethanes; and Ultrafix 3397, a surface-coated precipitated calcium carbonate for PVC plastisols. The firm's antiblock talcs for blown film include ABT-2500, an uncoated general-purpose antiblock said to have optimum particle size distribution, and Microbloc, a surface treated talc offering enhanced compatibility with polyolefins. Pfizer Inc. Minerals Division, 640 North 13th St., Easton, PA 18042; (215) 250-7000; Fax (215) 250-9514.

Plastics News, a weekly tabloid newspaper, presented information on subscriptions, advertising rates, and circulation. Plastics News, 1725 Merriman Rd., Akron, OH 44313; (216) 836-9180; Fax (216) 836-1005.

The Plastics Recycling Foundation distributed a booklet describing current efforts to recycle post-consumer plastics packaging. Entitled "Plastics Recycling: From Vision to Reality," the booklet contains data concerning the four components of a successful recycling system: collection, sorting/processing, reclamation, and end-use markets. The foundation also offered information on companies that manufacture products from recycled mixed plastics, and applications for the products. Plastics Recycling Foundation, P.O. Box 189, Kennett Square, PA 19348; (215) 4440659; Fax (215) 444-0923.

Plastics SL offered technical information on its epoxy molds. Plastics SL, 130 Rue Aube, St., Lazar, Quebec, Canada GOR 3JO; (418) 883-3326; Fax (418) 8833348.

Polyflow S.A. demonstrated its Polyflow finite element program for calculating viscous and viscoelastic flows. The program simulates the flow of rheologically complex fluids in industrial processing applications such as extrusion and coextrusion, fiber spinning, laminar mixing, compounding, and chemical vapor deposition. To calculate generalized Newtonian and viscoelastic flows, it uses mathematical models derived from continuum mechanics. Polyflow S.A., Place de L'Universite 16, Louvain-la-Neuve, B-1348, Belgium; 32-0-10-45-28-61; Fax 32-0-10-45-30-09.

Precimold inc. displayed samples of miniature precision molded parts, two-color insert moldings, and hot-stamping subassemblies. The firm specializes in precision injection molding of small technical and medical parts. Its services include moldmaking and design, two-color molding, insert molding, and secondary operations such as hot stamping, sonic assembly, and painting. Precimold, Inc., 9 Marie Victorin Blvd., Candiac, Quebec, Canada J5R 4S8; (514) 6592921; Fax (514) 659-2923.

By exposing materials to alternating cycles of light and moisture at controlled, elevated temperatures, The Q-Panel Co.'s Q-U-V Accelerated Weathering Tester can help predict the durability of materials that are subject to attack by light or moisture. Direct condensation on the test sample simulates the effects of rain and dew; fluorescent UV lamps reproduce the damage caused by sunlight. The tester, which induces color change, cracking, embrittlement, and oxidation, can help in the selection of new materials. O-Panel Co., 26200 First St., Cleveland, OH 44145; (216) 835-8700; Fax (216) 835-8738.

Randeastle Extrusion Systems, Inc., highlighted its Microtruder series of low-output single screw extruders. The bench-mounted extruders feature screw diameters of 1/4-, 1/2-, and 5/8-in, and produce outputs ranging from 10 to 2000 cc/hr. They are used to produce tubing, film, profiles, and coated wire and glass; reportedly, virtually any extrudable material can be processed on them.

The firm also has a Flextruder series of 1/2- to 1-1/4-in extruders, the screws of which operate in tension rather than compression. Because the Flextruder transmits its torque through the strongest part of the screw-its metering section-the screw reportedly can withstand much higher torque, without damage. A four-speed transmission permits screw speeds ranging from 2 to 175 rpm. Randcastle Extrusion Systems, Inc., 31 Hopson Ave., Little Falls, NJ 07424; (201) 256-2344; Fax (201) 256-2344.

Rapra Technology, Ltd., featured information on its Fillcalc IV and Diecalc software. Fillcalc is a microcomputer-based program that allows designers of injection molds to simulate the flow of polymer during mold filling and postfilling. Designers can then assess the feasibility of various combinations of material and mold design. Similarly, Diecalc aids designers of streamlined profile extrusion dies by allowing them to simulate the flow of plastic through the die, and the thermal and dimensional changes that occur downstream.

The firm also offers Plascams, a materials selection system that contains data relative to 69 materials properties for some 350 thermoplastics. Rapra Technology, Ltd., Shawbury, Shrewsbury, Shropshire, SY4 4NR, England; (0939) 250383; Fax (0939) 251118.

Rheometries, inc., offers two new software packages for rheological testing and data analysis-Rhios Rheometrics Integrated Operating Software) and Rhecalc (Rheometrics Enhanced Calculation Program). Besides controlling the operation of the rheometer, Rhios collects, stores, displays, and transfers data. It features extensive plot annotation capabilities and data editing functions that permit the manipulation of plotted data. Rhecalc cons modules. One generates master curves by time-temperature, time-strain, and time-concentration superpositions; it also performs curve-fitting and statistical operations. The other performs various rheological transforms and mathematical operations, including the calculation and interconversion of relaxation and retardation spectra. Both software packages can be used with the firm's RFS II Fluids Spectrometer, its RMS-800 Mechanical Spectrometer, and the RDA II Dynamic Analyzer. Rheometrics, Inc., 1 Possumtown Rd., Piscataway, NJ 08854; (908) 560-8550; Fax (908) 560-7451.

Schott America, Glass and Scientific Products, Inc., detailed its line of automated capillary viscometry systems, which feature a reported measuring range of 0.3 to 30,000 mm[sup. 2]/Sec. The line includes the AVS 400, which measures and stores flow times after completing a programmed number of capillary conditioning cycles. By using either a stored viscometer constant or to flow time, it can determine absolute or relative viscosity values, respectively. It reportedly measures flow times of up to 9999.99 sec. The firm also markets the AVS 310, 350, and 440 systems. Schott America, 3 Odell Plaza, Yonkers, NY 10701; (914) 9688900; Fax (914) 968-4422.

Seiko instruments, Inc., showed its SSC5200 Series thermal analysis system, which comprises numerous instruments for differential scanning c (DSC), thermogravimetric/differential thermal analysis (TG/DTA), and thermomechanical analysis (TMA). At the center of the system is a "TA Station/Diskstation" that controls up to three analysis modules and processes and displays data during measurement. The series also includes the PDC 120 Photochemical Differential Calorimeter, which continuously measures the heat of reaction caused by irradiation of photosensitive resin, and the TMA 120, which features a measurement temperature range from -150[deg.]C to 600[deg.]C. Seiko Instruments, Inc., 2990 W. Lomita Blvd., Torrance, CA 90505; (213) 517-7800; Fax (213) 517-7793.

Seiscor Technologies, Inc.'s REX- 1000 is a system that incorporates rheometry, particle sampling, and extrusion. It is designed to continuously sample polymer powder or pellets, convey the polymer to its extruder, and condition the sample for the rheometer measuring head. The system's extruder has three PID temperature control zones and a feed hopper with level control; it can be operated in a constant speed mode or constant pressure mode. Other components include a supervisor control, Rheocalc/Rheoscan software, control unit, rheometer, and sampling valve. Seiscor Technologies, Inc., P.O. Box 470580, Tulsa, OK 74147-0580; (918) 2521578; Fax (918) 254-8160.

Sensotron, a subsidiary of Powerec International, Inc., displayed its Series 400 Melt Pressure Transducer. The instrument, which incorporates an abrasion-resistant sapphire sensing diaphragm, is suited to chemical applications such as the processing of photographic film. Because the sensing diaphragm is flush to the end of the transducer, it does not require temperature isolation by push rod or mercury fill. Additional uses include highly abrasive extrusion applications in which thinner mercury-filled devices can wear out and release mercury into the process. Sensotron, 835 Middle St., Weymouth, MA 02188; (617) 340-5312;. Fax (617) 340-5313.

Southam Plastics Group displayed sample copies of its publications, which include Canadian Plastics magazine, Plastics Business (a new products tabloid), and the annual Canadian Plastics Directory and Buyers' Guide. Southam Plastics Group, 1450 Don Mills Rd., Don Mills, Ontario, Canada M3B 2X7; (416) 445-6641; Fax (416) 442-2213.

Several SPE Divisions displayed their newsletters and offered information concerning their respective activities. Among those represented were Advanced Polymer Composites, EPSDIV, Blowmolding, Plastics Analysis, Color and Appearance, Plastics Recycling, and Thermoforming. ANTEC 1992, scheduled for Detroit, was the focus of another SPE booth that featured advance information on Conference activities.

The Pulsar Mixing Screw, offered by Spirex Corp., was developed to combat problems commonly encountered in the mixing of plastic melt-such as high and low shear. Its metering section is divided into alternating sections that are either deeper or shallower than average metering depth. As material is forced from one section to another, it experiences gentle tumbling and massaging, which are said to result in excellent mixing, distribution, and melt uniformity. The screw can be used for both injection and extrusion, and is reported to be ideal for shear- and temperature-sensitive materials such as PVC. Spirex also offers barrel grooving to alleviate feeding problems, and vented barrel conversions that permit the escape of moisture and eliminate the need for predrying. Spirex Corp., Box 9130, Youngstown, OH 44512; (216) 726-1166; Fax (216) 726-9437.

Structural Dynamics Research Corp. (SDRC) outlined its I-DEAS (Integrated Design Engineering Analysis Software) for the design, analysis, testing, and manufacturing of mechanical products. The software, which automates the process of mechanical design and drafting, uses a solids-based design approach that eases construction of complex geometry by automatically removing hidden lines and directly calculating mass properties. Its variational design capabilities allow the user to incorporate radial and rectangular arrays of features into solid models, and then directly modify the number and size of features in the arrays. The user can employ a Laminate Composites feature to define and calculate ply materials, lay-up, and orientation of the composite; the software then calculates equivalent laminate characteristics for membrane, bending, and transverse shear. Structural Dynamics Research Corp., 2000 Eastman Dr., Milford, OH 45150; (513) 576-2476; Fax (513) 576-2135.

Synergistics Industries Ltd. outlined a range of offerings, including flexible PVC compounds and moisture-initiated crosslinkable polyethylene for wire and cable applications. Rigid PVC compounds, rigid PVC film and sheet, plasticizers, flame-retardant polyolefins, and filled polypropylenes are among the firm's other products, which are used in various applications within the construction, packaging, medical, and automotive industries.

The company has unified the corporate identity of its four subsidiaries, formerly known as Carlew Inc., Cary Chemicals Inc., Rochevert Inc., and Cary West Inc. Each now does business under the name of the parent company. Synergistics Industries Ltd., 5915 Airport Rd., Suite 425, Mississauga, Ontario, Canada L4V 1T1; (416) 673-1213; Fax (416) 673-8016.

Syscon International, Inc./Plantstar highlighted its RKC Single and MultiZone Temperature Control Software, including the new Century Series. The Series features a microprocessor-based PID controller and a 4-digit dual display; it reportedly monitors up to 48 variables per machine. The software is said to be capable of converting a temperature monitoring system to a closed-loop control system. Syscon International, Inc., 1108 S. High St., South Bend, IN 46618; (219) 232-3900; Fax (219) 287-5916.

Tarlin Scientific, Inc.'s line of flammability testing equipment includes the Cone Calorimeter, an instrument for measuring the rate of heat release from burning materials. The calorimeter measures rate of heat release per unit area, rate of mass loss, time to ignition, and effective heat of combustion; optional accessories permit the measurement of smoke density, soot mass sampling, and specific gases. Its applications include polymeric and composite materials that are used in the aerospace, building materials, and furniture industries. Tarlin Scientific, P.O. Box 368, Worcester, MA 01602; (508) 799-0909; Fax (508) 7579907.

Testing Machines, Inc., displayed an extensive line of physical testing equipment for the measurement of such properties as melt flow, impact, density, and permeability. The TMI Monitor/Slip and Friction Tester calculates static and kinetic coefficient of friction; it features a sled-connecting mechanism that ensures a level pulling action. The TMI Monitor/Impact Tester calculates Izod, Charpy, and tension impact results, and classifies specimens according to categories of failure-full, partial, hinge and nonbreak, and excessive elongation or necking. The firm also offers single- and multi-cavity molds for preparation of test samples. Testing Machines, Inc., 400 Bayview Ave., Amityville, NY 11701; (516) 8425400; (516) 842-5220.

Theysohn Corp.'s TSK Twin Screw Compounder features a screw shaft with four round keyways, eight axial carrying pads, and eight axial, loose-tolerance spline ways: The design is said to permit the removal of screw elements and kneading blocks without the use of fixtures or extreme force. Barrel alignment is accomplished by a tie-rod system that eliminates high spots in the barrel bore axis, thus reducing barrel and screw wear. The machine is designed to compound various engineering resins; polyolefins and copolymers; polystyrene, ABS, and polyester; and high temperature resins such as PEEK. Theysohn Corp., Box 157, 1320 N. 81 By-Pass, McPherson, KS 67460; (316) 241-4333; Fax (316) 2416469.

The Model KDE-GL 100E Gravimetric Feeder, offered by U.S. Extrusion, Inc., features a precision load cell for regulating the mix of rough and fine feedstock material. When 85% to 95% of the target weight is reached, the rough flow stops and fine flow continues until the weigh-in pan achieves the target weight. Feed rates range from 0.01 to 3.53 ft[sup. 3]/hr; weights are reported to be accurate to within 0.3%.

The firm also offers replacement parts for twin screw extruders, including various nitrided, wear resistant, and corrosion resistant barrels and screw elements. U.S. Extrusion, 146 Florence Ave., Hawthorne, NJ 07506; (201) 423-9010; Fax (201) 423-9283.

Van Nostrand Reinhold displayed a catalog of reference books encompassing a broad range of plastics-related subjects. The publications include works on polymer degradation, coloring, adhesives, and the various processing methods. Van Nostrand Reinhold, 115 Fifth Ave., New York, NY 10003; (212) 254-3232; Fax (212) 254-9499.

Waters/Division of Milupore exhibited its GPC Resin Analyzer, an instrument that characterizes the molecular weight distribution (MWD) of resins. The analyzer splits resins into their basic components (polymers, oligomers, monomers, and additives), indicating the amount vs. molecular weight of each different molecule. This "fingerprint" of the MWD permits the rejection of off-spec incoming resins, and the adjustment of processing conditions to correct resin lot variations. Typical applications include PVC, PU, phenolics, and epoxies. Waters/Division of Millipore, 34 Maple St., Milford, MA 01757; (508) 478-2000; Fax (508) 872-1990.

Werner & Pfleiderer Corp. illustrated its ZSK Twin Screw Compounding Extruder, which is particularly suitable for modified engineering plastics that require filling, reinforcement, and alloying operations. A "building block principle," manifested in interchangeable screw elements and barrel sections, permits the user to vary and control conditions along the process length. Because of the modular design of its processing section, the extruder can also function as a mixer, devolatilizer, or reactor. Werner & Pfleiderer Corp., 663 East Crescent Ave., Ramsey, NJ 07446; (201) 825-6429; Fax (201) 825-6460. West Instruments detailed its Gardsman multiloop process controller, which provides up to 32 independent control loops with adaptive self-tune and pre-tune algorithms. The controller features a series of loop and overview displays that allow review of any parameter for a single loop, or an overview of any parameter for all system loops. It reportedly scans 20 samples per second on up to eight loops, and can be connected to a computer via an RS-485/FS-232 serial communications port. The company's line of temperature, process, and machine controls also includes the 2000 Series and 3000 Series Single-Loop Digital Controllers. West Instruments, Rte. 2 & Middle Rd., East Greenwich, RI 02818; (401) 884-4188; Fax (401) 884-4872. Westech industrial, Ltd./TA Instruments, Inc., offered information on its line of thermal analysis equipment. The line includes a new microprocessor controlled thermogravimetric analyzer that is reported to provide improved resolution and throughput. It also comprises instruments for DSC, TMA, DMA, and DEA. Westech Industrial, Ltd./TA Instruments, Inc., 240 Matheson Blvd. East, Mississauga, Ontario, Canada L4Z I X 1; (416) 890-5265; Fax (416) 890-6213. Among the precision wire cloth products exhibited by Williams & Mettle Co. were extruder screens that provide a tight seal and clean screen change. They include Spot Weld Pack Screens, in which a series of spot welds are applied to the outer edge of the screen pack, and Seamless Aluminum Framed Pack Screens. The firm also has Stainless Steel Roll Screens and Square Mesh Wire Cloth Filters in various sizes and weights. Williams & Mettle Co., 3007 Crossview, Houston, TX 77063; (713) 782-2432; Fax (713) 782-3134. Xaloy, Inc.'s X-2000 Injection Screw incorporates, at the discharge end of the screw, an X-201 helical mixing device that accomplishes both dispersive and distributive mixing. By applying the requisite amount of shearing stress to the material, the screw reportedly ensures the homogeneity of the melt. The company also offers an X-8000 bimetallic "encapsulator" screw, which is designed to resist the wear caused by abrasion of filled materials. The screw reportedly differs from standard root "coatings"-it consists of a metallurgically bonded overlay on root surfaces of tungsten carbide. Xaloy, Inc., 101 Xaloy Way, Box 141 1, Pulaski, VA 24301; (800) 352-6383; Fax (508) 465-2143.

Zehrco Plastics Co. exhibited various samples of thermoset custom moldings, including compression-molded SMC polyester resin with fiberglass reinforcement. A firefighter's helmet, housings for business machines, and pump components molded of BMC were among the items on display. The firm's custom molding services encompass design, tooling, CAD/CAM, and secondary finishing operations. Zehrco Plastics Co., 5500 Washington Ave., Ashtabula, OH 44004; (216) 998-5774; Fax (216) 992-2430. A Message From the Government of Quebec The plastics industry has experienced outstanding growth worldwide during recent years. As scientific and technological progress is essential to industrial growth, the Gouvernement du Quebec was proud to join the Society of Plastics Engineers and be actively involved in the organization of ANTEC '91, which was held in Montreal in May.

This international event was an excellent means for participants to access advanced technologies and knowledge in plastic processes.

A visit in Montreal allowed participants to discover Ouebec's appealing opportunities and characteristics. and aroused their interest for potential investment.

We express our thanks to all our partners who have contributed in some way or other to the success of ANTEC '91.
 Guy Massicotte. Industrial
 Ministere de l'Industrie, du
 Commerce et de la Technologie
 710, place d'Youville
 Quebec (Quebec) G1R 4Y4
 (418) 691-5988
Grateful thanks to:
 * Mrs. Danielle Latouche, Director
- Communications
 M. Pierre Tessier, Communications
 Ministdre des Affaires internationales
 du Quebec
 * M. Clalide Racine, Director
- Communications
 M. Claude Paquin,
 Communications Officer
 M. Jacques Gagnon, Assistant
 Director General-Investment
 M. Pierre Giard, Director
 General-Chemical Industry and
 M. Pierre Marceau, Director
- Plastics Industry
 Ministere de I'Industrie. du
 Commerce et de la Technologie
 * M. Daniel Bissonnette, Industrial
 Montreal Economic Development
 and Initiative Commission
 * Mrs. Madeleine Pronovost,
 Product Manager-Conference
 M. Francois Goulet, Director
- Market Development
 Ministere du Tourisme du Quebec
 * M. Michel Roy, Development
 Tourism Canada
 * M. Stephen Bigsby, Director
 M. Yves Gignac, Industrial
 Mme Sylvie Mercier, Industrial
 Mme Dominique Morval, Research
 Montreal Economic Development
COPYRIGHT 1991 Society of Plastics Engineers, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 1991 Gale, Cengage Learning. All rights reserved.

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Title Annotation:includes directory of exhibitors; includes related article; Society of Plastics Engineers' 49th Annual Technical Conference
Publication:Plastics Engineering
Date:Jul 1, 1991
Previous Article:Additives extending the performance boundaries.
Next Article:Modifying polyamide blends for high impact strength.

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