Compounding and mixing systems.

AARON EQUIPMENT CO. DIV. OF ARECO, INC.

Stainless and carbon steel ribbon and double-cone blenders for resins, powders, or colors. Double-sigma blade mixer in carbon steel available with extruder discharge.

Double-arm mixer/extruder with roller bearings and split packing glands, and gear reducer of up to 200 hp. Front blade speed is 30 rpm; rear blade speed 17 rpm. The 13-in.-diam. screw is connected to a reversible hydraulic motor, 30 rpm in either direction. Jacketed 75-hp motor, pump, reservoir, and heat exchanger. Bowl and extruder housing are jacketed for steam, water, or oil heating to 100 psi at 300 F. Company will recondition extruders.

PAUL O. ABBE, INC.

Mixers include Rota-Cone tumble blender, ribbon and paddle blenders, Forberg-II mixer, and sigma-blade mixers for pastes and high-viscosity mixing. Specializes in custom mixing equipment with ancillary equipment such as load cells, bag dump, and dust control.

Also ball and pebble mills for production and laboratory applications.

ACRISON, INC.

Model 350 multipurpose blender for continuous mixing of dry materials features two concentrically mounted augers that operate at different speeds. Blender can coat pelletized products with lubricant or release agent, blend dry powders into master-batches, and add lubricants or colors. Output range is 1.2 to 5100 cu ft/hr. Quick-disconnect and sanitary models available.

ADVANCED PROCESS TECHNOLOGY, INC.

Electrically heated, agitated vacuum/pressure tanks for batch heating, degassing, and mixing in sizes from 2 to 75 gal. Continuous, on-the-fly degassing also available.

AMERICAN EXTRUSION SERVICES, INC.

Offers single-screw compounding extruders from 3.5 to 12 in. diam. and proprietary mixing screws.

ANDREWS PRODUCTS, INC.

Add * Too line of intensive nonfluxing blenders to mount on processing equipment. An arm or paddle integrates liquid color into pellet or powder flow. Units operate at up to 400 F and capacities to 2000 lb/hr.

B&P PROCESS EQUIPMENT & SYSTEMS

Corotating, self-wiping, high-and medium-torque twin-screw extruders from laboratory to production units with rates to 20,000 lb/hr. Complete test facilities available for feasibility and product development testing.

Machines in either clamshell or solid barrel designs. Segmented agitators for varying configuration, and segmented barrels for L/D ratios up to 50:1. Barrel sections can be equipped with side feeders, venting systems, liquid injection ports, and barrel-valve assemblies. Process controls with PLC-based systems available, along with optional DCS systems and MMI packages with auxiliary systems integration.

Turnkey systems available.

New batch mixer called TS 1200 Turban-mixer developed with and built by Battaggion in Italy.

Also corotating twin-screw mixers.

LOUIS P. BATSON, INC.

See Metering, Feeding, Blending.

BATTENFELD GLOUCESTER ENGINEERING

See Metering, Feeding, Blending.

BERSTORFF

Twin-screw corotating, intermeshing extruders from 25 to 324 mm with OD/ID ratios of 1.24, 1.46, 1.55, and 1.74 for compounding, reinforcing, filling, and masterbatch production. Screw speeds up to 1200 rpm. Specialty designs for melt-fed compounding, devolatizing, and reactive extrusion.

Single-screw extruders up to 800 mm come in melt- and pellet-fed homogenizing, devolatizing, straining, pelletizing, and specialty designs.

Multiple-screw (10 and more) extruders for high-surface-area devolatilization and reactions.

BLACK CLAWSON CONVERTING MACHINERY

Single-screw extruders, homogenizers, devolatizers and compounders in standard sizes from 2.5 to 24 in. and 7:1 to 36:1 L/D.

C.W. BRABENDER INSTRUMENTS INC.

Prep-Mixer high-shear, fluxing, intensive mixer for lab or pilot-plant mixing. Capacities of 1/3 to 1 qt. are liquid or electrically heated.

Two-roll Prep Mill with 4-in. diam. x 8-in. work area also for lab use. Roll gap ranges from 5 to 195 mils while is adjustable between 1 and 30 rpm.

Also continuous twin-screw mixer for high-shear mixing rates up to 8 lb/hr. Unit features counterrotating, intermeshing 1.65-in.-diam. screws.

BRAN + LUEBE, INC.

Pumps for liquid metering/proportioning and systems for in-line blending of two or more liquids. Units handle pressures up to 50,000 psi and viscosities to 100,000 cp at outputs to 23,000 gal/hr.

BUSS AMERICA INC.

See Coperion Corp.

CENTURY EXTRUDERS DIV. OF CENTURY, INC.

CX series corotating intermeshing twin-screw extruders in sizes 30 to 133 mm for compounding, mixing, filling, and reinforcing polymers. Processing sections are modularly designed with segmented barrel sections, which provide complete versatility in processing length, configurations, and barrels/screw material selection. Segmented design of elements allows unlimited screw profile configurations using conveying, kneading, and specialty elements to specifically address processing requirements. Process development laboratory available for trials. Complete technical, mechanical, and electrical support, along with large inventory of spare parts. (See Compounding/ Mixing)

CHEMINEER-KENICS STATIC MIXERS

Motionless mixing elements include Thermogenizers specifically for extrusion, which deliver homogenized melt streams to the die and have mixing capacities independent of extruder output. Heat exchangers (multi-tube and jacketed pipe) use Kenics elements to enhance heat transfer to polymer melt and foamed plastics. All units are compact, heavy-duty, have no moving parts, and provide economical and effecient continuous heating and cooling.

CLEVELAND-EASTERN MIXERS, EMI INC.

Static mixers reportedly achieve uniform, controlled degree of shear and flow. Unique element shape reportedly provides lower-cost mixing.

CLEXTRAL INC.

Offers Evolum series corotating, intermeshing twin-screw extruders from 32 to 145 mm diam. Also offers mixers, feeders, dryers, cutters, water baths, and pelletizers.

COLORTRONIC INC.

See Metering, Feeding, Blending.

CONAIR

See Metering, Feeding, Blending.

COPERION CORP.

Quantec-Kneader continuous, reciprocating single-screw compounders mix and disperse thermoplastics and thermosets. Use special profiled screw flights and rows of kneading teeth in the barrel section, plus a reciprocating screw action to provide intensive kneading. Primary applications include rigid and plasticized PVC, polyolefins, engineering plastics, masterbatching, and blending reinforce plastics.

Continuous systems have capacities from 4 to 15,000 lb/hr. Axial and radial mixing are said to offer exceptional plasticating, dispersing, and homogenizing of polymer with additives.

CORNELL MACHINE CO.

Versator solid/liquid blender can mix, blend and defoam two or more components. Recommended for coatings and pastes, it disperses one or more finely divided solids into liquids in will simultaneously deaerate. Disc in vacuum chamber revolves at 900 to 6000 rpm. Handles broad viscosity range.

CORONADO ENGINEERING, INC.

Offers a self-contained compounding and blending system for PVC. Also offers a wood-filled compounding system.

DAVIS-STANDARD CORP.

Single-screw compounding extruders handle cold- or hot-feed additive blending, L/D ratios from 8:1 to over 40:1. Hard-to-feed material can be introduced either by ram stuffer or screw auger to force-feed materials at the extruder throat, or through a side-arm addition where the material is metered into the molten polymer stream beyond the extruder's melting section. Applications include color concentrates, filled systems, alloying, and scrap reclamation.

Cavity transfer mixer for continuous blending in sizes 25 to 450 mm (built under license from Rapra of the U.K.). Rotor with Spherical cavities is attached to the end of the extruder screw; its stationary housing is mounted between the extruder barrel and die. Resulting circulation and cutting motion provides distributive mixing. Material flow has little restriction because unit has no pins, dams or other obstructions. Separately driven units also available.

Papenmeier high-intensity mixers for PVC and ABS from Davis-Standard France in sizes from laboratory models to full production machines for over 8000 lb/hr. Mixer/cooler combinations have increased cooling area for reduced time cycles.

DAVIS-STANDARD KILLION SYSTEMS

Single-screw compounding extruders in screw diam. from 0.75 to 3.0 in. with 36:1 L/D and vent for devolatilization. Second stage of two-stage screw has mixing elements for laminar, dispersive, and distributive mixing. These include multiflighted sections, mixing pins, gear-type mixers, and fluted mixing sections.

Additional features include injection ports along the barrel for downstream feeding of additives, and separate control panel for easy access to machine during maintenance and clean-up. Company also supplies strand and die-face pelletizing systems. Machines may be interfaced with downstream equipment to compound in-line with extrusion.

DRAISWERKE, INC.

Drais Perl ball mills finely disperse and homogenize high-, meduim-, and low-viscosity materials and stiff pastes. Units include perforated or pinned-disc agitator and chamber 80-90% filled with small grinding beads from 0.25- to 2-mm diam. Large number of beads results in very fine grinding and dispersing and is said to increase output by 30-50%. Chamber capacities from 1 to 1500 liters.

Drais turbulent mixer/reactors for high-speed mixing, kneading, and reaction process have interchangeable mixing elements for powders, pastes, and reaction processes. Knife mills, pinned discs, and main-shaft-mounted serrated discs can be built into the reactor chamber. Batch and continuous designs with capacities from 2.5 to 40,000 litres.

Drais Gelimat high-intesity mixer with 1- to 250-liter capacity uses friction energy to heat product for mixing and melting and completes a cycle in 15-25 sec. Mixer can process PVC, PP, PE, UHMW-PE, ABS, and PVDC. Material can be directly discharged into an extruder, mold or roller mill and pelletized. Batch and continuous models.

ECLIPSE SYSTEMS DIV. TECHNOLOGY GENERAL CORP.

Air-motor and electric-powered agitators/ mixers from 1 to 5 hp (direct drive or gear-reduction) accomodate all mixing viscosities. Models for use in 1- to 5000-gal vessels (open, closed, pressure, vacuum). Standard stainless-steel couplings, shafts, propellers and paddles. C-clamp, bung, horizontal and flange mounts. Tri-clamp and ANSI flange mounting available. Explosion- and shock-proof air-driven models are immune to burnout. Electric models available in TEFC, XP, inverted rated, d-c with or without speed controls.

ENTEK EXTRUDERS

Offers E-Max corotating and counter-rotating twin-screw extruders and side feeders.

EPROTEC AMERICAS LLC 

Represents Swiss-built Geartruder for elastomeric compounding in six models from 250 to 8800 lb/hr.

ERIE MILL & PRESS CO., INC.

Laboratory and production two-roll mixing and warm-up mills have working faces from 3 x 6 in. to 26 x 84 in. and up to 120 in. long. Can be furnished with standard sleeve bearings or roller bearings, as well as chrome-plated and drilled rolls, motorized adjusting screws, air-operated scraper knives, and tilting stock guides. The mill drives are constant-speed a-c or variable-speed d-c. The mills can be furnished with dual variable-speed hydraulic drives.

EXTRUDER TECHNOLOGIES INC.

Supplies custom-built corotating twin-screw extruders and auxiliary equipment.

FARREL CORP.

Twin-rotor continuous mixer for polyolefin color masterbatching and homogenization and compounding of engineering resins, reinforced or rubber-modified polymers, and rigid and flexible PVC, including floor tile. Units from 25 to 150,000 lb/hr feature variable work-input levels for adjustment of discharge temperature. Nonintermeshing rotor design provides fast changeover and easy cleaning.

Farrel CP (Compact Processor) combines the continuous mixer with a hot-fed extruder to provide a versatile, space-saving system featuring self-cleaning action. Especially designed for optimal dispersion of highly filled, highly pigmented materials. Outputs to 8000 lb/hr. Suitable for inline compounding profile extrusion of material such as wood composites.

FTX twin-screw extruder has patented polygon and CME (Continuous Mixer Element) corotating screw components, which reduce high-shear stress and localized high temperature common to kneading disk machines. Design of mixing section ensures long residence for thorough mixing. Outputs from 100 to 5000 lb/hr with high-torque models running up to 12000 rpm.

Farrel Banbury mixer has paired counter-rotating rotors nitrided for durability and offering efficient flow of material, short residence time, and high process quality. Major use is in incorporating and dispersing pigments and fillers into plastics and rubber materials.

Farrel Advex systems for advanced post-reactor processing of polymer resins and compounds permit on-line adjustments even of bimodal HDPEs and metallocene-based compounds. Four rotor configurations will shear and homogenize polymers of any viscosity while system accurately controls shear force and temperature. Polymer properties are closely maintained and pellets are of uniform high quality.

Farrel Shaw Mark 5 Intermix combines large batch capacity plus rotor geometry and thermal efficiency to process a wide range of advanced elastomers. NR5 cooled rotors optimize mix uniformity while eliminating localized heat build-up. Charge and discharge are rapid and construction enables ready access to working components.

FERRY INDUSTRIES, INC.

Ferry Plas Mec offers high-intensity mixers (designed by Plas Mec through Ferry Industries) for producing PVC dry blend, color compounding, powder coating materials, and general-purpose mixing applications. Configurations include laboratory mixers with 10 and 20 liter capacities; TRA series for mixing pigments into polyethylene in sizes from 200 to 1200 liters; and TRR series for maximum flexibility and portability in capacities from 200 to 2000 liters, Combimix series for heating and cooling applications includes turbomixers (heaters) from 200 to 2000 liters, horizontal coolers from 1000 to 6500 liters, and vertical coolers from 400 to 3600 liters. TPE series planetary extruders produce 2100 kg/hr of soft PVC or 1200 kg/hr rigid.

FINN & FRAM, INC.

Dynamic 2-4 component in-line mixing systems for SMC and TMC manufacturing. Also full batch mixing systems, which include mixing tanks, high sheer/vacuum mixers, delivery systems for liquids and powders, (semi-automatic, automatic, or manual addition of ingredients), holding tanks, silos, weigh hoppers and feed equipment and control systems.

FOREMOST MACHINE BUILDIERS, INC.

See Metering, Feeding, Blending.

GEMCO GENERAL MACHINE CO. OF N.J.

Tumble blenders, dryers, and formulators for powders. Semi-continuous Porta-Hopper combines speed of continuous blending with versatility of batch operations. Formulator combines multiple steps in materials handling and blending to reduce time, labor, and worker exposure. Full laboratory for process development and product testing.

HAMILTON AVTEC INC.

See Metering, Feeding, Blending.

HAYES & STOLZ INDUSTRIAL MFG. CO.

TR Counterpoise ribbon mixer has two independently driven, nonintermeshing ribbon assemblies that are said to provide faster but still gentle mixing. Adaptable to fill levels of 10-75%. Energy savings of 40-60% over single-shaft mixers are claimed. Sizes of 16 to 252 cu ft with drop-bottom or slide-gate discharge option.

Also single-shaft ribbon and paddle mixers, stainless-steel models, continuous blenders and vertical mixers.

H.F. HENDERSON INDUSTRIES

See Metering, Feeding, Blending.

HOCKMEYER EQUIPMENT CORP.

Concentric shaft mixers with high-intensity and slow-speed mixing blades blend dry materials into viscous liquids. Scrape surface agitator and stacked disperser blades maintain uniform mass flow. Mixers handle liquids from 50,000 to 3,000,000 cp.

Double planetary mixers incorporate two sweeper blades traveling on the same axis. Design of the sweep blades lends itself to medium range viscosities. Full coverage of the entire tank and drum surfaces guarantees complete particle uniformity within each batch.

Multishaft mixer systems for high-viscosity applications. Efficient scrapper blade is used to move product more efficiently to lower production times and increase batch uniformity. A system has been developed to introduce dry powders below the liquid level when required for environmental reasons.

Horizontal mixer has mixing blades designed for low-intensity mixing of highly viscous products. This design lends itself to heavy, nonflowing materials. Blade design follows the contours of the tank and helps eliminate dead spots. Overlapping arms prevent material build-up. Double rolling action kneads and rubs material against the side of the tank imparting shear and wetting.

HOSOKAWA BEPEX

High-speed, high-shear continuous mixer blends solids with solids, liquids, or gases. Six sizes from 8- to 30-in. diam. Adjustable shear and impact action. May be jacketed for heating and cooling. Paddles are adjustable to vary retention time.

Nonintensive ribbon blenders for dry and dry/liquid blending have capacities of 2 to 680 cu ft and are used for mixing additives and pigments into powders and pellets. Agitator assembly with inner and outer ribbons provides gentle mixing action and is recommended for mixing small amounts of critical ingredients with large amounts of matrix material. Batch or continuous operation.

Also supplies a unit for mixing and extruding paste and platic materials. Continuous mixing and kneading action on materials discharging through an orifice plate that provides size and mixing control. Jacketed for heating or cooling.

HOSOKAWA MICRON POWDER SYSTEMS

Conical mixing vessels have orbiting arm and rotating screw element that follows the cone wall. Reported advantages include reduced mixing times, high mixing accuracy, and reduced power consumption. Vrieco-Nauta mixers for dry solids, pastes, and viscous liquids come in a variety of materials and finishes.

S. HOWES INC.

Horizontal ribbon mixer ensures uniform blending and mixing of dry products and slurries, as wells as coating, heating and finishing. Standard sizes available from a 1/3 cu/ft lab mixer to a 500 cu/ft production model. Specific designs to suit the food, pharmaceutical, chemical, plastics, and agriculture markets. Models can be equipped with thermal jackets, integrated control systems, dust hoods, bag dumps, and can be customized to mate with existing or new equipment.

Duplex mixers provide uniform mixing of filter cake with addition of dry or liquid ingredients on a continuous basis. Gentle mixing action of the fully adjustable paddles ensure uniform blending. Retention time is controlled by paddle and mixer speed. Mild or stainless-steel models available with 5-40 tons/hr capacity.

ICMA SAN GIORGIO SPA

Corotating twin-screw extrusion systems from 25 to 175 mm diam. Series comes in three versions: standard V2 two-lobe, higher shear V3 three-lobe, and torque version.

Specializes in turnkey compounding systems for incorporating all types of raw materials, homogenizing and extruding a semi-finished product (flat sheet, pellets, profiles), and direct forming in some cases of finished products in one continuous process.

IKEGAI AMERICA CORP.

PCM intermeshing, self-wiping twin-screw extruders use segmented screws and barrels so that L/D ratio and working of materials are easily adjustable. Screws are driven in either corotating or counterrotating direction. Screw diam. from 29 to 125 mm.

IMS CO.

Heavy-duty drum tumblers feature 20[degrees] tilt and criss-cross action. A 1/3-hp mini-tumbler accepts 5-gal pails and up to 36 lb per holder. Larger twin-drum tumblers with 1 1/2-hp motors handle 30- or 55-gal drums and up to 280 lb per holder. All units come with maintenance-free belt drive. Space-saving, single-drum corner unit available.

For high-volume, high-speed blending, Hurricane large-capacity mixers mix 350 or 850 lb in 15 min. Loading platforms and discharge frames available.

INDCO, INC.

Portable liquid mixing equipment includes laboratory stirrers, high-speed dispersers, 5-gal mixers, and drum mixers. Units can handle from 1 to 5000 gal. In-stock mixing propellers, paddles, blades, and pail openers.

INTERNATIONAL MATERIAL CONTROL SYSTEMS, INC.

Vertical blender for batch mixing pellets, flakes, and regrind with dry colorants and additives can be loaded with an auger, flowthrough bin, vacuum loader. Up to 120 cu ft can be mixed in about 15 min.

ITALIAN TRADE COMMISSION

Information supplied on complete systems from Italian manufacturers that offer blenders, turbomixers, roll mixers, and internal mixers.

IVEK CORP.

Biox proportional fluid blending system provides two-component flow and mixing control accurate to 0.1% at all flow rates. Rates are digitally selected from 0.001 to 999 cc/min. Mix proportion of A to B is selectable in 0.1% increments. Parameter changes are accomplished via digital thumbwheel switches without stopping the unit. Constant volumetric flow rates are maintained even when liquid proportions are changed. Solid-state electronics, stepping-motor drives, and valveless ceramic pumps reportedly provide accuracy, reliability, and long life.

JAECO FLUID SYSTEM INC.

Wide range of plunger-, diaphragm-, and solenoid-type metering pumps. Flow rates for plunger pumps available to 682 gph with pressures up to 7200 psi. Flow rates for diaphragm pumps available to 426 gph with pressures up to 1000 psi. Liquid ends available in 316 stainless steel, PVC, Alloy 20, and Hastelloy C. Double diaphragm pumps also available.

JAPAN STEEL WORLS AMERICA, INC.

CMP-X series of corotating twin-rotor continuous mixers with gear pumps is based on company's CIM (continuous intensive mixer) technology. Standard models range from 65- to 305-mm rotor diam. Largest model has max. rotor speed of 215 rpm, 11,000-hp drive, and throughout to about 88,000 lb/hr. Clearance between screws and barrel wall can be adjusted by a slot-control mechanism.

Tex twin-screw counter- or corotating extruder has change lever at the side of the gear box, segmented screw, and block cylinder. Sizes to 305-mm diam. Largest unit, Tex 305, has 11,000-hp gear box and output of 77,000 lb/hr and lengths to 56:1 L/D. Features include high torque for high output and/or high degree of fill, high speeds for high output and/or shear dispersion, large free volume for high output, increased distributive mixing, better devolatilization, and internally cooled barrels for optimal cooling efficiency. Barrel designs for downstream addition or extraction available.

JAYGO, INC.

Supplies mixing, blending, drying, filtration systems, specializing in conical-screw blenders for masterbatches and for cooling and drying pellets and powders. Units constructed of carbon or stainless steel and include a tapered internal screw, which agitates material through a planetary lifting and mixing action. All units can be supplied with heating/cooling jackets, and for vacuum/pressure.

Heavy-duty sigma-blade mixers and mixer-extruders for high-viscosity mixing and dispersing. Products up to 10 million cps can be mixed and extruded.

Also planetary mixers, ribbon and paddle blenders, high- and low-speed dispersers, high-shear emulsifying mixers, and grinding media.

JIFFY MIXER CO., INC.

Jiffy all-purpose, heavy-duty mixers with vertical and horizontal blades. Two vertical blades confine mixing action within the mixing head while horizontal opposing blades force material from the upper and lower areas of the container inside the head. Leading edge of lower horizontal blade scrapes bottom of the container to bring all settled particles into the head. The ring prevents damage to the blades and puncturing of container walls. Mixers operate with both electric and air-driven chucked power tools and fit all 1/4- to 3/4-in. tools.

KOBELCO STEWART BOLLING, INC.

Continuous and batch compounding and mixing equipment.

NEX-T and Mixtrumat continuous two-stage, twin-rotor mixers with parallel-discharge and transverse-discharge extruder screw are used for polyolefin masterbatching, homogenization, compounding rigid and flexible PVC, engineering resins, and reinforced or rubber-modified polymers.

NCM continuous mixer has three-bladed segmented rotors for quick reconfiguration. Long-L/D rotors provide intense mixing for difficult compounds. Also LCM continuous mixer with 10:1 L/D rotors and two-stage mixing, vent, and gate control; and LCM-G system with gear pump and pelletizer for high-capacity, post-reactor mixing, homogenizing, and pelletizing.

Hyper KTX deeply intermeshing, corotating twin-screw extruder for high-torque, high-performance compounding. Mixtron BB twin-rotor, batch-type intensive mixer has patented rotor design and high-performance, low-lubrication dust stops.

Economix tilt-discharge twin-rotor batch mixer is a low-profile, self-contained, floor-mounted unit that eliminates need for platforms or mezzanines. Mixing chamber tilts 140[degrees] for fast, easy discharge and cleanout.

Also custom-designed two-roll mixing mills and NMC98 batch-mixer computer-control system for precise automatic mixing control.

KOCH GLITSCH

See Sulzer Chemtech USA Inc.

KOMAX SYSTEMS, INC.

Complete mixing systems control addition of colors, lubricants, uv stabilizers, and other liquid additives after the extruder. AddMaster 1200 provides the reservoir, pump, and special heaters to supply additive to the injection point while profiling the additive temperature to end up close to that of the polymer melt stream.

Equalizer modular motionless mixer ensures complete mixing of additives in melt stream and consists of stackable modules, which are assembled into their own barrel. Together with an Equalizer, the SIDD (Special Injection and Distribution Device) allows additives, usually of much lower viscosity and flow rate than the main flow, to be introduced into the melt stream. TEDD (Temperature Equalization and Distribution Device) is used in blown film dies to enhance gauge control. Two- or four-module assemblies are installed in the throat of the blown film die or die adapter.

KRUPP WERNER & PFLEIDERER

See Coperion Corp.

K-TRON AMERICA

See Meterin, Feeding, Blending.

LABOTEK INC.

See Metering, Feeding, Blending.

LCI CORP.

Supplies low-pressure mixing and extrusion systems using Fuji Paudal extruders and Spheronizers to convert dusty, fine powders into pellets.

LEISTRITZ EXTRUDER CORP.

Corotating and counterrotating twin screw extruders and complete systems for compounding and direct product extrusion. Screw diam. from 18 to 135 mm for outputs from under 1 lb.hr to 10,000 lb/hr. Machines have segmented screws and barrels with screw speeds to 1200 rpm.

Laboratory extruder has attachments for corotating and counterrotating twin-screw modes. Convertible 18- and 27-mm twin-screw extruders for lab and medical applications have througputs of 1 to 15 lb/ hr and 10 to 100 lb/hr, respectively. Operate in corotating intermeshing & counterrotating intermeshing modes. Segmented barrels are electrically heated and internally cooled by air or liquid. Machine is self-contained on a roll-around frame.

LIGHTNIN A UNIT OF GENERAL SIGNAL

Dynamic mixers from fractional-hp laboratory units to production models exceeding 1000 hp. Ful spectrum of impellers for all flow and shear combinations.

Inline products include dynamic and static mixers for liquid-liquid and liquid-gas blending over a wide range of viscosities.

LINDEN INDUSTRIES, INC./EMB

RRIM filler blending systems blend "B" component (polyol) of urethane, polyurea or polyester RRIM systems with fillers, internal mold release, and carbon black. Applications include automotive fascias, doors, fenders, side moldings, bathtubs, sinks, etc. Mixer sizes from 25-gal lab unit to 980-gal system.

Capacities for blending slurries up to 4500 lb/hr. Automatic filler unloading from gaylords prevents material loss and ensures clean, dust-free environment. Liquid components received from bulk-storage tanks or drums. Weight-metered components ensure accurate and consistent ratios. Orbital-arm, conical-screw mixer provides efficient mixing. Slurry is automatically transferred to temperature-controlled holding tank. Recirculation/transfer pump and pipe loop conveys slurry to RRIM stations. Load cells interfaced with a programmable controller ensure accurate control. Process is displayed graphically on a CRT with SPC capability.

Custom-designed, modular polyol inline blending system can blend three to six components. Controls (PC olus Allen-Bradley PLC) are menu-driven. Sensors continually monitor ratio precision.

LIQUID CONTROL CORP.

Posimixer disposable motionless mixers blend multicomponent liquid streams in sizes from 3/16 to 2 in. Available in 3/16-, 1/4- and 3/8-in. and 13 mm I.D. with various numbers of elements in disposable assemblies; and in 5/8-in. O.D. stainless-steel tube mixers with plastic elements. Other motionless mixers have removable or welded elements and stainless-steel tube or pipe construction.

LITTLEFORD DAY INC.

Compounders, mixers, and mixing systems for the preparation of plasticized PVC dry blends and rigid PVC compounds, color concentrates, surface coatings, thermoplastic resins, and acrylic and epoxy powder coatings.

Littleford WC series high-intensity vertical mixers provide controlled, rapid and homogeneous mixing of various plastic resins, plasticizers, stabilizers, lubricants, and pigments in short-mix cycles. Mixing action accomplished by two high-energy converting impellers mounted on a single shaft in a dust-light vertical mixing cylinder.

Littleford FKM horizontal ploughshare mixers provide large batch sizes, highest coefficient of heat transfer, and complete product uniformity in short-cycle times. Mixing action accomplished by a horizontal shaft with ploughshare mixing tools, which revolve at high-rate speeds, creating mechanical fluidized-bed mixing action.

LODIGE PROCESS TECHNOLOGY INC.

Produces horizontal ploughshare batch mixers, vertical Papenmeier intensive mixers and a heating/cooling mixer.

L-R SYSTEMS

See Metering, Feeding, Blending.

MAGNA MACHINE/U.P.E.

Builds batch and continuous mixers and corotating twin-screw extruders.

MAGNUM VENUS PRODUCTS

Liquid resin mixers include:

* High-shear mixer for corrosion-barrier additives, abrasion-resistant fillers, and highly thixotropic resins.

* Collapsible-blade mixer with blades that fold up to fit through a 2-in. bung, then open up to provide complete mixing of fillers and additives while still in the original drum.

* Bung-hole mixers for mixing additives into polyester resin while still in the 55-gal drums.

* Five-gallon pail mixer for mixing medium-viscosity materials such as polyester resin. Supported by a bracket so mixer may be left in place.

* Hand-held pail mixer for mixing high-viscosity materials such as gelcoat. Allows reaching into corners of pail for complete mixing.

* Filler mixing vat mixes heavy fillers with resin for use in pouring, casting, or resin injection.

MAGUIRE PRODUCTS INC.

See Metering, Feeding, Blending.

MARION MIXERS, INC.

Paddle- or ribbon-type nonintensive mixers provide batch or continuous mixing of dry materials (pellets with powders or fiberglass), liquids with solids, and slurries or pastes. Close clearance between agitator and tank ensures complete discharge. Also drop-bottom mixers.

Optional fillet-weld sanitary construction for thorough color cleanout. Mixers made from carbon steel or stainless steel with optional heating or cooling jackets in lab sizes up to large production units.

High-speed Marion mixer with choppers is an intensive, nonfluxing mixer that fluffs compacted synthetic fibers used in molding compounds, disperses pigments into plastic powder, and heats and disperses plasticizers into PVC. Available U-shaped or semi-cylindrical.

MARIS AMERICA CORP.

Offers Italian corotating twin-screw extruders, including The TM-HT high-torque series, and the TM20 lab extruder.

MATCON USA, INC.

Matcon tumble blender gives gentle, homogeneous blending of materials with no degradation of product. Blender accommodates Matcon Intermediate Bulk Containers (IBCs), in which product can be transported, blended, stored, and directly discharged to process. Offset axis of rotation causes a complex pattern of particle movement within the container for an accurate and efficient blend. Batches can be blended in 2 to 20 min. Because the system discharges material on a mass/flow basis, there is no separation of product after mixing or during discharge. Blenders are ruggedly built to ensure safety and can be made fully automated via PLC control. Available in a range of sizes and supplied in mild or stainless steel.

MATSUI AMERICA, INC.

See Metering, Feeding, Blending.

MAX MACHINERY, INC.

Liquid blending systems for two or more components heat materials to desired process temperature, degas them, meter with accuracy of +/- 0.5% of desired flow rate, mix, and dispense. Suited for blending urethanes, silicones, epoxies, and other liquids. Systems custom designed using standard subassemblies to construct "roll-in-place" turnkey units.

MERLIN PROCESS EQUIPMENT, INC.

Series FM high-intensity vertical-bowl mixer and Series HU medium-speed vertical-bowl mixer have mixing tools that rotate at sufficient speed to create a fluidized mixing action. Flow pattern is a forced vortex. Homogeneous blends are usually attained in 45-60 sc with the FM and in 3-5 min with the HU. FM mixer gas tge ability to frictionally elevate the temperature of material being mixed and to disperse agglomerated fine powders including most pigments. Dispersion for the HU series is accomplished through the use of high-speed choppers mounted through the side wall of the unit. With Series HM Horizontal medium-speed mixer the fluidized mixing pattern extends along the entire length of the horizontal vessel. Mixing characteristics are similar to the HU unit.

Series PM low-intensity mixer comes in paddle and ribbon agitator designs.

MFIC CORP. MICROFLUIDS

High- and low-pressure micro-mixing equipment for processing emulsions and dispersions. Typical applications of high-pressure equipment includes dispersions of clays and pigments. Microfluidizer technology processes 100% of the product to identical conditions. Pneumatic and electro-hydraulic models available. New Diamond Interaction Chamber is a highly wear-resistant mixing chamber for wet milling, wet grinding, deagglomeration, and high-energy dispersion of highl abrasive slurries. The Chamber exposes the fluid streams to high levels of shear, impact, and cavitation to achieve stable emulsions and dispersions containing particles and droplets in the low-micron and submicron ranges.

MITSUBISHI HEAVY INDUSTRIES AMERICA

Single-screw mixing extruders have hexagonal-barrel mixing section of 50 to 135 mm. Corotating twin-screw extruders range from 45 to 125 mm. (See Extrusion Systems.)

MIXACO/TRIAD SALES LLC

Sales and service for Mixaco universal and high-speed mixers. Capacities from 3 to 30,000 liters. Container mixers wih capacities from 3 to 2,000 liters. Heating/ cooling mixers with capacities from 600 to 6,000 kg/hr.

Also from Theysohn Maschinebau corotating, intermeshing twin-screw compounding extruders with screw diam. of 20 to 175 mm and drives from 5 to 3500 hp that provide torque of 53 to 78,000 lb-ft. Segmented screws and barrels (hinged clamshell opening on some sizes) offer flexibility of configuration. Standard controls mounted in free-standing cabinet or on machine base for smaller models include multichannel temperature controllers with digital display of set and actual values. Optional microprocessor controller offers color CRT, graphic displays of measured data, automatic start-up routines, master/slave control of main and auxiliary systems, storage of production data, and interface to higher-level factory-control systems.

MOREHOUSE-COWLES, INC.

High-shear, single-shaft dissolvers; multishaft mixers for high-viscosity products; vapor-recovery units; and laboratory development mixers. Rental units availabale. Specializes in custom-designed mixers and reactors.

MORSE MANUFACTURING CO.

Drum rotators and tumblers agitate up to 1000 lb of material in ordinary closed drums or other cylindrical containers. Applications include remixing settled material and blending liquids, solids, or solid/liquid mixtures. Some models use rolling action and others end-over-end tumbling. Some have self-loading capability. Portable and stationary models use fixed- or variable-speed drives and various electric or air motors.

MOTAN, INC.

See Metering, Feeding, Blending.

MOULD-TEK INDUSTRIES, INC.

See Metering, Feeding, Blending.

MTI-AMERICA

Vertical hight-intensity mixers from MTI International GmbH. Lab mixers from 1.5 to 35 liters and production models from 75 to 2080 liters. Uses include PVC dryblending, color concentrates, PE and PP masterbatching, toners, and crosslinking PE.

MUNSON MACHINERY CO., INC.

Rotary batch mixers homogenize dry batch materials with no product degradation and discharge all material for easy changeovers. Blend time of two-three min. with capacities to 400 cu ft.

Ribbon blenders in heavy-duty double-ribbon style configuration or paddle style with optional heating or cooling jackets blend and compound materials efficiently. Job-engineered for specific applications with applications to 600 cu ft.

Rotary continuous mixer blends dry free-flowing materials with additives as low as 0.1%. Complete discharge upon product changeover. Liquid additions available. Capacities to 3500 cu ft/hr.

NATIONAL BULK EQUIPMENT INC.

Portable solids mixer with 8-in.-diam. vertical auger mixes a batch in as little as 10 min. Seven models have 14-gauge steel construction, two-way entry, hinged covers, 8-in.-diam. slide-gate discharge, safety lock, and 60-min timer.

Horizontal screw blender with outputs from 4000 to 12,000 lb/hr for precision metering and blending of virgin materials and regrinds. Unit has positive a-c drives, automatic shut-off, adjustable regrind ratio, optional color-concentrate bin, and loading by blower, vacuum, or gravity. Materials-handling systems designed to fit specific applications.

NFM/WELDING ENGINEERS

Corotating and counterrotating, intermeshing and nonintermeshing extruders for compounding and reactive processing in high- and low-speed models. Segmented screws and cast barrel with faster spiral cooling and carbide lining offer flexibility of configuration. Single-screen process control system for all functions of extruder, feeders and downstream equipment. TFT touchscreen computer can be installed as a swing-arm, cabinet, or standalone unit. System has the capability to record, save display process information, communicate with other computers via network, and control multiple machines.

Company has a technology licensing agreement with Toshiba Machine Co. to design, build and sell Toshiba's TEM corotating twin-screw line of compounding extruders. TEM series with 27 to 175 mm diam. and 32 to 36:1 L/D is aimed at engineering thermoplastics. TPOs, masterbatches, and filled or reinforced materials.

NOVATEC, INC.

See Metering, Feeding, Blending.

E.T. OAKES CORP.

Custom-build continuous and batch mixers for increased production, greater yield and consistency. Applications include emulsification, aeration, dispersion, dissolution, and reactions. Flow rates from 0.1 to 100 gpm and pressures up to 1000 psi. Constructed from 303 and 316 stainless steel, Hastelloy or Carpenter 20. PLC-based "Oakes Touch" mixer controller maintains constant flow rates, formula ratios, and final product density. Lab testing and loan mixers available.

PATTERSON-KELLEY

Twin-Shell blender makes homogeneous mixes of liquids with solids and microingredients with carriers. Unit has a v-shaped design that gently tumble blends the complete loads regardless of particle size or density, while optional intensifier bar is used for intimate dispersion and higher energy input agitation. Working capacities from 1 to 2000 cu ft.

Zig-Zag continuous blender can handle the same mixing applications as Twin-Shell and provides the same blending accuracy but on a continuous basis. Working capacities from 20 to 5000 cu ft/hr.

PERRY VIDEX LLC

Rebuilt and guaranteed high-intensity mixers; horizontal and bowl coolers; ribbon, double and twin-shell blenders. Complete extrusion compounding systems available.

PLASTIC PROCESS EQUIPMENT, INC.

Heavy-duty drum tumblers mix resins and additives. Three models feature heavy-duty gear drive for smooth, continuous drum rotation without the jerking action and premature wear common to chain- or belt-drive tumblers. Models from 2-hp Double Drum Tumbler with 300-lb capacity to 1/3-hp Mini-Double Drum Tumbler with 50-lb capacity. Optional control panel.

PLASTICS EQUIPMENT MARKETING SERVICES INC.

Blending, mixing and materials-handling equipment for extruders, blow molders, and injection molders can handle powders, flakes, regrinds, and pellets. Also high-intensity mixers and coolers for compounding and coloring.

PLASTORE INC.

See Metering, Feeding, Blending.

POMINI

See Techint SpA.

PREMIER MILL CORP.

Specializes in wet-process technology utilizing mills and mixers: horizontal media mills, colloid mills, in-line mixers/ dispersers, sing- and multiple-shaft mixers (vacuum/pressure/jacketed capabilities), and double planetary vacuum mixers. All available from lab scale to full production units. Company's engineering arm, Integrated Process Systems, can provide any level of process control/automation up to fully automated turnkey systems. Lab facility available for testing.

PRESSURE PRODUCTS INDUSTRIES, INC.

Dyna/Mag magnetic-drive mixer is suited for leak-tight and noncontaminating mixing, stirring, or blending. Magnetic drive transmits torque through a corrosion-resistant pressure housing to an inner stirring shaft without need for mechanical seals or packing. Torque is transmitted through use of two magnet sets. The driven magnet set is totally encapsulated in the mixer shaft. The driver magnet set is located in a rotating outer housing containing a ball-bearing assembly.

In-stock units in 316 stainless steel, Hastelloy C-276, or other materials. Magnetic drives in sizes with power from 0.4 hp to 12 hp, static torque from 16 in.-lbs (2Nm) to 1000 in.-lbs (117Nm), and operating pressure to 6000 psi at 650 F.

PROCESS CONTROL CORP.

See Metering, Feeding, Blending.

PROCESSALL INC.

Horizontal, fluidized-bed mixers with plow-shaped agitators process BMC, SMC, plastisols, organosols, and other dispersions. Sizes from 4 to 25,000 liters. Minor ingredients can be premixed and agglomerated for easier handling and minimal environmental exposure. System preheats and mixes product, and a liquid binder is added to bind particles together. A cooling step follows to seal particles and enhance flowability.

U-Max processor with temperature/ vacuum capabilities performes in-situ polymerization reaction followed by a drying step in the same equipment.

P.S.H. INDUSTRIES, INC.

Gyro Plastic Mixers in several sizes mix liquid resin compounds of any viscosity in batches from one pint to 16 gal, and are reportedly highle effective for resin pastes.

PSI-POLYMER SYSTEMS INC.

Offers Uniflow static mixers.

PTI/PROCESSING TECHNOLOGIES, INC.

Trident series single-screw compounding extrusion systems in bore sizes from 3.5- to 10-in. diam. From single-component additive compounding to multiple-component and liquid-feed compounding, systems are equipped with extended L/D configurations and optional downstream additive feeding for glass and powders. Primary applications include FPVC, HDPE, LDPE, nylon, PP, and ABS.

Systems come equipped as hot-melt pump extruders for feeding and pumping pre-compounded materials for downstream pelletizing and/or mill roll takeoff systems. Units range from 6- to 14-in. diam. processing materials such as RPVC, FPVC, PP, and TPE.

QUADRO, INC.

Quadro Comil conical screen mill is especially suited to heat-sensitive materials and to dispersing wet and dry materials before extrusion or other processing steps in order to reduce preblending time and improve final blends.

Mill features low rpm, centrifugal acceleration, vortex flow pattern, and 360[degrees] discharging screen. It reportedly eliminates overworked material and heat by friction. Fines, dust, heat, and noise are said to be reduced. Five sizes and 14 configurations with capacities from 250 to 50,000 lb/hr and relatively low-hp motors.

READCO MANUFACTURING INC.

Continuous processor/compounder has larger void volume and, therefore, can handle lighter, fluffier, bulky materials for blending. Units are for all plastic resins including difficult recycling situations. The twin-screw, corotating, self-cleaning machines come in sizes to handle 2 to 20,000 lb/hr of output. Also containerized batch mixers (CBM) for preblending all resins prior to extrusion can handle batch sizes from 1 lb to 9000 lb.

REGENCY SALES, INC.

Laboratory two-roll mills and intensive, high-speed mixers. Electrically heated models operate to 570 F. Optional water-cooled models or oil- and steam-heated models. Mixer LMX-5 with 5-liter capacity and model LMX-10 with 10-liter capacity are easy to clean, have two-speed motors, and can be optionally equipped with water-cooling chambers.

RELIABLE RUBBER & PLASTIC MACHINERY

Two-roll laboratory mills in 3 x 8 in. to 16 x 40 in. sizes have fixed or variable-speed/ variable-friction capabilities and other options, such as accurate electrically heated rolls, roller bearings, flood oil lubrication and technical controls to provide application flexibility required in R&D and process development work. All parts are standard and readily available, in most cases, off-the-shelf. All mills can be designed and manufactured to meet specific needs.

Lab-size intensive mixers range in approx. 2 1/2- to 10-lb batches. Computer controls available as well as other options.

Also offers rebuilt equipment: two-roll mills, calendars, Banbury mixers, extruders, ribbon blenders, and sigma-blade mixers.

CHARLES ROSS & SON CO.

Double Planetary Mixer is a heavy-duty, intensive, nonfluxing mixer for polyester premixes, plastisols, and pigments. Two stirrers in the tank rotate individually on a common axis. Most viscous materials can be handled. Jacketing available.

Kneader Extruder batch mixer combines mixing and extruding, operates with higher hp, and provides more mastication action. High-hp motor permits polymer dispersion at low temperature, minimizing degradation. Capacities from 1 to 1000 gal. Applications include polyester premix and color concentrates. Jacketing available.

Three types of motionless mixers improve homegeneity of the melt stream in injection molding machines and extruders: LPD for lower viscosities where pigments are added, ISG for high viscosities, and Blendex-modified ISG for batch or continuous solids/solids blending.

SCOTT TURBON MIXER, INC.

High-shear and low-shear, batch or continuous centrifugal mixers/dispersers for liquid/solid systems are based on proprietary mixing elements on a rotating shaft. Units are custom built for applications such as SMC paste mixing and PVC plastisols. Versions can be floor-mounted, cart-mounted, top-mounted, C-clamp mounted, horizontally or vertically oriented. Vacuum deaeration available.

SEALANT EQUIPMENT & ENGINEERING, INC.

Dynamic and motionless-mixer systems blend plural-component epoxy, silicone, urethane, and polysulfide-type materials while dispensing. Disposable mix chambers available for use where cleaning solvents are prohibited.

SKINNER ENGINE CO.

Batch-type intensive twin-rotor mixers with capacities over 1000 lb for color masterbatching and compounding. Features include two- and four-wing rotors (intensive or oversize tangential), hydraulic dust stops, drilled or cored sides, slide or drop door, and special internal surfacing for wear resistance. New or rebuilt machines, chambers, sides, and replacement parts available.

Lab model twin-rotor batch mixer has variable-speed drive and heating capacity to about 450 F.

In-plant services include installation, maintenance, and repairs.

SONIC CORP.

Sonolator in-line homogenizer, used in custom-designed systems to emulsify or disperse liquids, converts kinetic energy of a high-velocity liquid stream into intense mixing energy. Dual-feed systems instantaneously convert two independent liquid streams into one fully homogenized product. This process can reduce batch mixing.

Colloid mills mix, mill and homogenize in a single pass. Undispersed material is forced into a cavity formed between a spinning rotor and fixed stator; centrifugal force propels material to the outside of the rotor, causing intense hydraulic shearing and grinding of undispersed phase. Three different angles on the rotor ensure maximum disruption of the material as it moves through the mill.

Also portable propeller mixers from 1/4- to 10-hp.

STAMIXCO LLC

New company introduces static mixers made under license from Bayer AG that are reportedly stronger and less expensive than conventional units.

STRANCO PRODUCTS DIV. OF U.S. FILTER

PolyBlend polymer feed system measures, blends, and feeds dry, liquid, or emulsion polymers. It can be programmed for dosing and dilution rates, dwell time, energy amount, and energy distribution over time.

Automation of the PolyBlend system is said to eliminate costly and messy batching.

SULZER CHEMTECH USA INC.

Motionless mixers that blend colorants/ additives into the melt stream before entering the die or mold improve melt homegeneity in injection machines and extruders. New easy-to-clean KSM elements are used in mixing nozzles.

Also builds combinations static mixer/ heat exchanger, which is designed for cooling high-viscosity materials and isothermal control of exothermic/endothermic reactions in plug flow. Various configurations include SMX jacketed monotube design for mixing/ dispersion heating and cooling; SMXL multichannel shell-and-tube design for rapid heating of thermally sensitive materials; and SMR tubular design with large heat-transfer surface in a single flow channel.

TAH INDUSTRIES, INC.

Motionless mixers produce rapid, intense and uniform mixing. Plug flow creates mixing for uniform heat transfer, fast reaction, polymer additive blending, injection molding nozzles, extrusions, and shell and tube heat exchange equipment. Available from 1/8- to 18-in. diam. in 316/3161, steel, PVC, CPVC, Kynar and Polypro. Mixers operate in-line, are cost efficient, simple to install, and require minimal space, low-energy consumption and zero maintenance.

TECHINT SPA, POMINI DIV.

Intensive, twin-rotor continuous mixers and long continuous mixers (LCM) precisely control mix quality in processing operations such as densifying, color concentrate compounding, pigment masterbatching, polymer alloying, and compounding with fillers, plasticizers, and foaming agents. Resembling a twin-screw extruder, LCM is a continuous mixer with two nonintermshing counterrotating wing-type rotors. The 10:1 L/D mixing chamber has two distinct mixing zones with independent temperature control. Transport of material, dispersion of ingredients, and preheating take place in first zone. Melting, mixing, homogenizing, and discharging of the compound, once it has reached a predetermined temperature, are carried out in second zone.

LCM-AX is an in-line combination of long continuous mixer and twin-screw extruder in one machine. Designed for process flexibility, screws are corotating and intermeshing, and have a mixing zone with the rotor-blade profile of the LCM. Downstream from the mixing zone is a throttle valve, which controls dwell time and specific energy input. With this control flexibility, a wide range of polymers and engineering plastics can be compounded on the same machine without the need to reconfigure screw geometry. With a secondary feed zone downstream from the rotor section, glass fibers and other delicate reinforcements can be safely added and uniformly distributed without breaking the fibers.

TCC continuous compounder combines the advantages of a long counterrotating, nonintermshing mixer with those of a gear melt pump. Features include higher productivity (to 130,000 lb/hr.), versatility, low energy consumption, under-vacuum degassing, together with simplified design and layout.

Turnkey, custom-engineered batch or continuous compounding lines can be provided complete with upstream and downstream support equipment and customized automation.

THERMO HAAKE USA

Rheomix 600 intensive mixers for a wide range of applications generate data on shear, temperature, and torque. Capacities from 70 to 100 cc. Also available in Rheomix 610 liquid-heated version. Rheomix 3000 closed, high-intensity mixer provides up to 300-cc mixing capacity for viscosity and stability tests.

THERMOPLASTICS ENGINEERING CORP.

Single-screw compounding extruders and lines for lab or full-scale production in sizes from 3/4- to 6-in. with up to 36:1 L/D. Multistage screws have varying configurations for optimum mixing. Injection ports aid downstream feeding of additives.

THEYSOHN MASCHINEBAU GMBH

See Mixaco/Triad Sales LLC.

THORESON-MCCOSH INC.

See Metering, Feeding, Blending.

TRAC-CON INC.

Offers a hand mixer for use with company's premeasured packages of plural-component epoxy resin, acrylic, urethane, and silicone systems.

UNIVERSAL DYNAMICS INC. A CO. OF MANN+HUMMEL GROUP

See Metering, Feeding, Blending.

U.S. STONEWARE CORP.

Grinding, mixing, and blending equipment includes mills in capacities from 0.1 gal through 210 gal. Tumblers and rollers for different sizes of drums and containers can use material suppliers' containers, eliminating the need to load, unload, and clean a fixed container.

WALTON/STOUT, INC.

See Metering, Feeding, Blending.

WAYNE MACHINE & DIE CO.

Yellow Jacket table-top and horizontal floor-model single-screw compounding extruders with option microprocessor controls in sizes from 1/4 to 8 in. and throughputs of 0.5 to 1200 lb/hr.

Corotating twin-screw extruders for production and lab applications. Screws suitable for polymer alloys, coloring, filling and reinforcing, devolatilization, liquid addition, and pelletizing. Extruders feature segmented, reconfigurable, intermeshing screws. Barriers in top-vent, side-feed, glass-feed, and liquid-injection configurations. Ancillaries include side feeders, gravimetric feeders, and dies. Control systems with PID discrete controls or full microprocessor systems with PLC integration.

Special extruders for high-speed compounding with screw speeds to 350 rpm for single screw and 500 rpm for twin screws. Single or double vents for devolatilization.

Builds turnkey lines and manufactures high- and low-shear mixing single screws for any make of machine.

THE YOUNG INDUSTRIES, INC.

Custom-designed compounding systems for PVC and polyolefins. Complete process and equipment design. Turnkey projects supplied with installation and start-up and can be automated.

Horizontal ribbon mixers from lab size to 1500 cu ft capacity blend free-flowing solid/solid or liquid/solid mixes. Standard units have double ribbon-type agitators. Paddle and trowel agitators optional. Jacketing also available.

Multishaft mixers for continuous blending feature twin agitators with adjustable paddles. Options include jacketing, vaccum or pressire troughs, and a variety of contruction materials.

Gravity blenders handle 15 to 7500 cu ft of material. Ingredients are dropped through multiple ports to blend.