Materials handling systems conveying, loading and storage: product lines reviewed.

Materials Handling Systems CONVEYING, LOADING AND STORAGE

ACTIVE MAGNETICS

Company's hopper magnet housing provides protection against damaging tramp iron and fine iron contamination in resin flows. Two rows of 1-in.-diam stainless-steel tubes packed with permanent magnets slide easily in and out of a mild steel housing. Located directly over machinery orifices and below material openings, all materials must pass through a powerful magnetic field that attracts and holds ferrous contamination. A transparent plastic polycarbonate drawer front enables the operator to observe material flow and check for accumulated tramp iron. To clean, the slide gate is closed to stop material flow, the drawer removed, and the collected metal wiped off the tube. Mounting holes are predrilled to fit customer's equipment. Special mounting plates are also available. Heavy duty construction easily supports the weight of loaded hoppers and secondary equipment.

Company also offers plate magnets for protection against tramp iron damage and fine iron contamination in processing lines. Installed in chutes, spouts, ducts, feed tables and housings, as well as in suspension over nonmagnetic screens and conveyors, magnets catch and remove damaging iron contamination from material flows. Compact models come hinged or stationary. Hinged models are standard for installations where swinging open for cleaning is desired. Stationary models are for mounting where cleaning will be done from the face-side or where the unit will slide out of its working position for cleaning.

APPLIED MAGNETIC SYSTEMS, INC.

Provides magnetic devices utilized to remove tramp iron and fine iron abrasion from plastic products before granulating or pulverizing to protect machinery and equipment, in addition to purifying the product for reprocessing. Systems include plate magnets used in chute and duct work, incorporating housings for hump magnets. Grate-type ceramic, Alnico or rare-earth magnets in drawer- or wing-type, include housings of either mild or stainless steel. Other devices, such as magnetic pulleys and suspended magnets to be incorporated in conveyor systems, are manufactured for specific process needs. Both permanent and electromagnet drums are also produced and applied to specific customer requirements in recycling plastic materials.

AUTOMATED FLEXIBLE CONVEYOR

Company's AFC Spiralfeeder is a tubular, flexible or rigid mechanical conveyor designed to move plastic pellets, regrind, dry blend, resins, and many other materials. The modular round discharge head provides unlimited discharge angles. The discharge head's molded pop-off Neoprene cover eliminates nuts, bolts, and gaskets and simplifies maintenance and cleaning. The True-Flow hopper, designed to work in conjunction with the conveyor, provides maximum unrestricted flow.

The Spiralfeeder is available in portable or stationary units, carbon or stainless steel. Eleven model sizes are available with spirals in standard, heavy-duty and bevelled edge to meet the specifications and rates of each individual application.

AUTOMATION PRODUCTS, INC.

Company's Dynatrol Detector, type CL-10DJ, a bulk solids level switch, is designed for application to either high- or low-point level detection of powdered, granular, or other bulk solid materials. Suitable for a wide range of bulk densities, the level detector tolerates material buildup and can be used in vessels equipped with vibrators.

BROCK MANUFACTURING

Manufactures a line of corrugated silos and Flex-Auger Plus conveying systems. The silos, available in capacities from 147 through 7010 cu ft, are offered in diameters of 6, 7, 9, 12, 15, 18, and 21 ft. A 10-degree sloped roof complete with perimeter guard rail and toeboard is standard. This low profile roof maximizes storage space inside buildings, eases installation of dust collectors, crosswalks, and yo-yo or plumb-bob inventory units, and allows for safe servicing of equipment located on the deck. A selection of slide gates is also available.

The Flex-Auger Plus materials conveying system can provide automatic transportation of materials up, down, on-the-level, or around corners into work areas, including areas where space is limited. The spiral steel, flexible auger systems are available in four sizes: model 2000 (2.95-in. tube diam. with 75 cu ft/hr capacity), model 2500 (3.50-in. tube, 75 cu ft/hr), model 3000 (3.50-in. tube, 150 cu ft/hr), and model 7000 (5.00-in. tube, 330 cu ft/hr). The systems are totally enclosed and capable of full-load startups. The durable coreless auger comes in one continuous piece and is the only moving part, which reportedly offers low maintenance and easy installation in both new and existing facilities.

CHICAGO CONVEYOR CORP.

Designs and engineers pneumatic conveying systems for the transfer of pellets or granular materials within a plant, e.g., from a storage silo to a mixer or molding machine. Systems can be pressure or vacuum, can be dilute-phase or dense-phase where minimum attrition of the particles is important, and can deliver from one point to several locations, or conversely, pick up from several locations and transfer to a central point. All systems are custom-designed for a specific application.

Company has designed systems for handling pellets, and also for handling additives used in formulations. A bag dump station has been developed whereby bagged materials can be introduced safely and conveniently into systems.

CINCINNATI MILACRON U.S. PLASTICS MACHINERY DIV.

Offers both vacuum loading systems and pellet feeders. Vacuum loading system is microprocessor-based and is programmable for up to 24 stations and 3 pumps in any configuration. Sizes range from 3 to 25 hp, consisting of positive-displacement pumps, v-belt drive motors, motor starters, muffler and pump protective devices. System utilizes large-capacity, pleated fiber filters to protect the vacuum pump from contamination. Optional sound enclosures allow a quiet operation of 80 dbA.

THE CONAIR GROUP, INC.

Provides a wide range of performance guaranteed components for material and processing needs, including railcar or bulk unloading systems, a wide variety of bulk storage silos, and in-house project/installation crews to plan, deliver, and install.

Offers the simplest of all vacuum loading systems: a self-contained integral motor vacuum loader used for pellets and free-flowing regrind materials. The DustBeater series features a combination dump valve/level switch that provides smooth operation with even the most troublesome materials. Rugged construction, solid-state controls, and vacuum tubing/pick-up wand are standard features. The unit can also be equipped with a valve for automatic ratio loading of two materials.

Company also offers central loading systems using either local machine control or remote central control. Either system switches vacuum power from one loader to another when material is needed. Central systems, in addition to often being more convenient, also eliminate the need for filter maintenance at each station and reportedly prolong individual loader uptime dramatically. Multiple loading stations also benefit from a central vacuum system by using one three-phase pump to service all loaders rather than separate motors at every loader as with integral motor loaders.

Reportedly unique to the industry is the company's Selectronic 4 central system which offers the maintenance benefits of central vacuum systems without the inconvenience of a centralized control panel. Individual controls are mounted at the machine, avoiding problematic back-and-forth adjustments. Company's CLC version is also available with centralized controls for 5-, 10-, 15-, and 20-station controls.

CYCLONAIRE CORP.

Manufactures a full line of dense-phase conveying equipment and related accessories. Specializes in hard-to-handle or abrasive materials, railcar unloading of bulk materials, or in-plant batching or weighing. Systems can be adapted to existing processes or designed from scratch.

J.H. DAY CO./TAYLOR STILES 

Designs and manufactures complete custom materials handling systems, both bulk-handling and in-plant and can provide individual equipment or completely integrated and automated systems for a wide range of processing functions.

For storing , blending and weighing products prior to use, company offers its plasticizer tanks. Agitation provides thorough blending and keeps solids from settling out. Jackets are available for heating/cooling.

ERIEZ MAGNETICS

Company has introduced new separation, metal-detection and vibratory products.

* E-Z Tee III metal detector: A closed-aperture model to detect metallic contaminants of 1% of minimum aperture dimension. Unit accommodates a wide range of product speeds. Product velocity extremes down to 5 ft/min and up to 8800 ft/min are available. Features include solid-state electronics, crystal oscillator for stable drive frequency reference, and variable-oscillator drive voltage that optimizes product phasing and sensitivity.

* Rare-earth magnetic separators: Magnetic grates, traps, plates, rolls and tubes remove weakly magnetic or very fine iron contaminants from dry bulk or liquid products, utilizing company's Erium 3000 permanent magnetic power source, which is said to develop up to 25 times the pull of conventional materials. Separators can be designed into new processing lines and equipment flowsheets, while existing housings and bodies can be retrofitted with RE assemblies.

* Single-mass mechanical conveyor: Model SM mechanical conveyor utilizes gentle, oscillating motion to move light loads of free-flowing materials at capacities to 18 tons/hr. Units come in sizes from 8 to 36 in. wide and 5 to 10 ft long, and operate at a low hp.

* Electro-permanent magnetic bin vibrators: Twelve models that move sticky, hard-to-handle bulk materials in bins, hoppers and chutes are available. Designed to apply concentrated vibration and a positive drive in both directions for superior action on bin walls. Units feature dust- and wear-resistant housings with no sliding or rotating parts.

Other products include magnetic drums with either crisscross or agitator-type magnetic fields, and magnetic humps for removing tramp iron from free-flowing materials conveyed by gravity. Company also offers its HI-VI vibratory feeders.

FILTERLESS CONVEYING SYSTEMS

Offers its Hurricane hopper loader, a closed-loop, filterless, multistage pneumocyclone.

The unit has no filters and requires no compressed air. Closed-loop air system eliminates dust in the working environment and ensures conveying of dried hygroscopic materials with dry air.

Standard equipment includes remote programmable controller with security to inhibit tampering, stainless-steel pickup tube, heavy-duty grounded vinyl hose, low-level hopper alarm, remote shut-off to prevent loading while pick-up tube is out of material, high-temperature shut-off valve, all stainless-steel hose clamps, and rugged construction of 0.080-in. spun aluminum and assembled with sock-cap screws.

FLEXICON CORP.

Designs and manufactures materials handling systems for any and all bulk solids. Complete systems from storage to process, as well as reclaiming systems, are supplied.

The system does not utilize air, filters or cyclone separators to transfer. It is a flexible screw conveyor with the flexible screw as the only moving internal part. The conveyors are reportedly efficient to operate and maintain, and are able to convey materials in any direction.

Company's engineering department can design materials handling systems to customer's specifications.

FLUIDIZER INC. SUB. OF GENERAL RESOURCE CORP.

Specializes in solving bulk materials handling and process problems. Can design a complete system to fit customer's specific applications. Company researches for new and improved methods and systems.

FOREMOST MACHINE BUILDERS

Materials handling capabilities range from the simple, self-contained vacuum loader to the custom-engineered, fully integrated plant system designed, built, and installed by company. Supplies automated turnkey systems utilizing vacuum, pressure, or combination vacuum/pressure units. Detailed CAD layouts are supplied with each system quotation. A full graphic control panel with a programmable controller initiates and monitors the completely automatic process. Laboratory and testing facilities are available for product evaluation.

Equipment provided includes silos, railcar unloaders, pneumatic conveyors, gravimetric and volumetric feeders, granulators and belt conveyors, metal detector and separator systems, resin dryers and recycling equipment.

FORSBERGS, INC.

Manufactures natural frequency vibrating conveyors for horizontal conveying of all types of plastics. Conveyors can also be equipped with screens for fines and oversize removal from regrind or pellets. Additional features include a counterbalance system for installation on mezzonines or other elevated structures.

FOX VALVE DEVELOPMENT CORP.

Company's venturi eductors with no moving parts are used to transport plastic pellets and powders. They can be installed in conventional, positive conveying systems and can be used to replace rotary airlocks. Using motive air at 3-14 psig, depending on conveying distance, they can entrain and transport plastic materials with less wear and product degradation than airlocks. Production of angelhair, threads, and fines are reduced, or eliminated, when eductors are used in place of airlocks. They are particularly useful when handling regrind, which is rough on airlocks; or glass-filled resins, which can erode eductors. Company reports 2000 eductors currently in service handling plastic materials.

S.G. FRANTZ CO., INC.

Offers its FerroFilter electromagnetic separators which remove fine magnetizable particles (down to submicron size) from dry materials or fluids. Standard units are designed for removing fine ferromagnetic particles. Special units can be provided for separating paramagnetic particles. Separators for processing granular materials or powders include a vibrator to aid passage of material. Separators for processing liquids or slurries are of several designs, including units for pipeline installation and others for gravity feed.

All units can be cleaned in place by de-energizing the electromagnet and shaking or flushing out collected contaminants. Automated systems with all controls required for timed processing, cleaning cycles are available.

GRACO INC.

Manufacturers fluid-transfer and supply pumps (air- and hydramatic-powered), plural-component proportioning systems, adhesive applicators, conventional and electrostatic spray-painting equipment, robotic spray finishing, and complete circulating systems.

A.C. HAMILTON, INC.

Offers a basic range of integral-motor hopper loaders, supplemented by a complete line of remote vacuum-pump loaders and systems. The self-powered, integral motor models include solid-state controls and range in capacities from 250 lb/hr to over 2000 lb/hr. All models include automatic filter cleaning after each load. Ratio models for virgin/regrind conveying are available.

Company's Command 2000 central vacuum systems and loaders are designed for higher capacities over longer distances, using a floor-mounted vacuum pump to provide power for all the loading stations. A central dust collector eliminates on-machine filter maintenance. Pump sizes range from 3 through 25 hp. Special twin-cyclone powder loaders are also offered.

Company specializes in weight-loading systems using the Command 2000 equipment by adding weigh cells to each vacuum hopper and supplying special microprocessor controls with CRT messages. Optional printers can record each pound conveyed.

Company also provides welded steel storage silos and continuous level-sensing systems for electronic silo storage monitoring.

HAPMAN CONVEYOR

Builds a line of bulk materials handling equipment for plastics. Mechanical product line includes flexible screw conveyors, tubular drag conveyors, and oscillating conveyors. Pneumatic conveyor line features high-efficiency vacuum conveyors and ancillary equipment. A line of plastic bulk containers, supersack unloading stations, and manual bag-dump stations with integral dust collectors are also available.

HOPPMANN CORP.

Offers a line of flat-top chain and belted variable-speed conveyors and a series of variable-speed metering bulk elevating conveyors in size ranges of 1 cu ft through 80 cu ft capacity in painted or stainless-steel finish.

HOWE RICHARDSON DIV. HOWE RICHARDSON, INC.

Offers proprietary, engineered products and systems for high-accuracy, high-throughput metering, conveying, feeding, packaging and control of carbon blacks, oxides and most difficult-to-handle powders.

Low-pressure, high-density, fluidizing pneumatic system transports from bulk unloading, sacks (emptied by automatic sack splitter Model J11), or from storage. Remote adjustable DCV transmitter maximizes conveying rates on the widest range of blacks, with minimal fines generation for optimum dispersion in mixer.

Air-slide feeder with fluidized bed and precise dosing valve provides accurate batch/transfer with low fines.

For prepackaging small additives in low-melt poly bag for direct addition to mix, company's Small Powder System has accurate batch control of 16 bins in multi-formulation with auto-bag form/fill/seal.

Total plant process control from bulk intake through weighing, mixing, and downstream routing control to finished product storage is provided by Select-O-Weigh 900 computerized system with color graphics.

IMS CO.

Line of equipment consists of gaylord tilter, hopper loaders, storage drums and hoppers. Both large-capacity, electrically operated tipsters and easy-loading, air-operated models tilt gaylords automatically as pellets are removed, assuring an uninterrupted flow of materials to the press.

Three types of vacuum hopper loaders-- standard, standard with automatic filter cleaning, and proportional with automatic filter cleaning--come in two capacities. Company's "Whisper" loaders are reportedly fast, fully automatic, and trouble-free. A low-cost, energy-efficient pneumatic loader is also available.

For large-capacity material storage, portable hoppers that are stackable up to three high are available, as well as smaller capacities of 5-, 30- and 55-gal, stainless-steel and lower-cost plastic drums.

JETSTREAM SYSTEMS CO.

Engineers and manufactures air conveyor systems. Systems use low-pressure centrifugal fans and operate at approximately 1/8 psi and are custom-designed for handling plastic parts and scrap. Plastic scrap or product can be removed from the production area. Air conveyor systems have virtually no moving parts other than the centrifugal fans powering the system, resulting in operator safety as well as minimizing maintenance. Air conveyor systems also allow for flexible layouts, rounding turns or overhead with no transfer points to fit in with the the constraints of the plant, while maximizing usable floor space.

KAALCO SERVICES, INC.

Designs and engineers blenders (volumetric and gravimetric), feeders, materials handling systems, scrap reclaim systems, silos, railcar unloading, and extrusion control systems.

KORNYLAK CORP.

Manufactures a wide range of equipment to store pellets by gravity flow, metal belt conveyors for heavy-duty applications, and vertical conveyors for deck-to-deck operations.

LABOTEK INC.

Offers the following equipment:

*Mini-feed hopper loader MF95 is air-powered with a capacity to 200 lb/hr.

*Mini-feed hopper loader MF98, 110 v, single-phase vacuum loader with a capacity to 400 lb/hr.

* Con-Evator hopper loaders have 3-phase motor driving high-efficiency turbine, reversing each cycle to clean the large polyester filter. Six capacities from types PGT4 at 570 lb/hr to SF4 at 3700 lb/hr. Types PGT4, PGT61, and PGT9 have adjustable suction time and a filter for reverse air flow.

* Ratio-Selector (RS) for metering of virgin/regrind; the RS is attached to the vacuum hopper loader inlet. Feed oscillates according to the adjustable preset ratio.

* Scanning System--Centrally controlled automatic materials handling for systems, designed to suit requirements. Basic solid-state, 24-v controls for 8 or 16 feeder bowls can be extended in multiples. High-quality cast-aluminum feeder bowls come in two sizes. Vacuum power units to suit system.

M-D PNEUMATICS DIV.

See Tuthill Corp.

MAC PNEUMATIC DIV. MAC EQUIPMENT, INC.

Manufactures a complete line of dilute-phase and dense-phase equipment for pneumatic conveying of pellets, resins and compounds. Systems can be designed for vacuum or pressure service, or a combination of both.

Components available include vacuum loaders, pressure and vacuum blower packages, dense-phase pressure vessels, rotary airlock valves, blade-line diverters and parallel-tunnel diverters, scale valves and scale hoppers, and complete process control capabilities.

Typical applications are for rail unload systems, storage of in-plant processing, regrind conveying systems, and complete PVC compounding systems. Transfer rates range from 500 lb/hr to 50 tons/hr in 2- through 14-in. diameters.

MATSUI AMERICA, INC.

Jet Loader series of vacuum hopper loaders includes the Jet Loader VC with a cyclone separator to collect dust and fines; and the Jet Loader V with a dual dust-collection system, consisting of one filter in the hopper and one in the suction unit. Both systems are said to provide trouble-free operation for extended periods.

Company also provides special "non-contaminating" materials-handling systems for optical-disk manufacturing.

An unusual offering for small machines is the MultiJet II combination hopper loader, dehumidifying dryer, and mold-temperature controller in one compact, mobile console.

MONITOR MANUFACTURING

Makes level controls for dry bulk materials in storage. Available products range from electronic proximity sensors, capacitance level controls, to electro-mechanical plumb-bob continuous-level sensors and paddle-type, point-level units.

Under the Alphatron logo, company also manufactures load cells and gauges for bin and bulk weighing, batching, and check-weighing of materials.

MORSE MANUFACTURING CO., INC.

Makes drum handling equipment for fiber, steel and plastic drums. Drum handlers offer productivity and safety advantages in applications such as moving, positioning, and pouring drum contents. There is a broad selection of products including drum hand trucks, dollies, cradles, drum bung wrenches, drum lifters for use on hoist hooks, wheels and on fork trucks. Hoist attachments for moving upright drums and for raising drums for controlled pouring are available for various size drums. Fork-truck attachments for moving upright drums and others for controlled pouring are available as ready-to-use accessories which do not permanently occupy the lift truck. Wheeled lifters with simple mechanical action are designed for low-height pouring. Lifters with manual hydraulic lift are made for controlled drum pouring at heights up to 5 ft and over. Power options with a choice of air, battery, or a-c motors are available.

MOTAN, INC.

Manufactures complete lines of conveying and blending equipment:

* Vacuum conveying lines include central systems featuring a patented filterless vacuum receiver design, machine-side loaders for single stations, and a new line for smaller machines called Mini-Line. New introductions include a double-port, positive-seating proportioning valve. Company has also introduced and marketed a design combining a filterless vacuum receiver with a machine hopper to create a unit without discharge valve, which mounts directly to the machine throat.

* Blending and additive feeders include both central and machine-mounted models. Exclusive 100-pulse countback feature reportedly guarantees accurate repeatable performance from these auger-style units. Complete installation available, featuring all equipment necessary for handling of resins from bulk state to the molding machine.

MOULD-TEK INDUSTRIES, INC.

Manufactures a complete line of vacuum, pressure, and vacuum/pressure conveying systems, together with blenders, additive feeders and mixing chambers. In addition, company designs and builds custom weigh-scale systems, weigh hoppers, and in-plant surge bins to meet the needs of the plastics processor. To complete the line, outdoor storage silos can be included in either welded, bolted or corrugated form. All equipment can be purchased as individual items or as a complete system with all interconnecting piping, fittings, hangers, etc.

O.A. NEWTON & SON CO. MATERIALS CONTROL SYSTEMS DIV.

Markets and installs a complete line of bulk storage, materials handling and proportional control systems, including railcar and truck unloading facilities, silos, conveying systems, customized bins and hoppers, and a wide range of specialized manufacturing equipment and repair services. Lines include conveying systems, both mechanical and pneumatic, blenders, and pelletizers.

Company will design, engineer and custom build components for the system or retrofit existing systems. Proprietary units include Micro Ingredients Controller (MIC), a weighing and feeding system for minor ingredients.

NOVATEC INC.

Builds and installs a full range of pneumatic materials-handling equipment.

For railcar unloading there are vacuum pressure systems with ratings to 100 hp, which move pellets to outside silos or large surge bins.

Inside the plant, vacuum power units to 25 hp, with state-of-the-art microprocessor controls, convey materials through vacuum loaders to drying hoppers, blenders and/or process machines. Vacuum loaders and chambers are available in several models. All are self-cleaning, proportional mixing loaders with adjustable load, dump and air pulse cycles, and solid-state controls.

A multiplexing system is offered as an option on the company's vacuum power units. Multiplexing reportedly reduces installation-time and costs by eliminating expensive point-to-point wiring as vacuum loading stations are added to the systems.

Company's RB (regenerative blower) for moving pellets generates pressure through a centrifugal blower and features a brushless motor and quite operation. The RB can be mounted on a vacuum chamber lid. The RRB model is for remote mounting.

OMNI-LIFT, INC.

Custom builds and designs enclosed bucketless conveyors to move any 3/8-in.-mesh granulate, powder, slurry or liquid quickly and economically. Typical applications include: loading in and out of silos, in-plant transfer, railcar loading and unloading, truck loading and unloading. Conveyors are totally enclosed and constructed dust-tight for protection of the individual and the environment. Housing can be built, using carbon steel or stainless steel for conveying chemicals or any abrasive materials. Conveyors are sized to specifications in inclines, including vertical, top or bottom dog-legs, and "Z" configurations. Belt specifications include standard black, high-temperature, and FDA white.

PACIFIC ENGINEERING SYSTEMS

Provides engineering services for manufacturing and installation of state-of-the-art turnkey pneumatic-handling systems for granulates, powders, and other nonfree-flowing materials such as regrind, pigments, T102 and calcium carbonate. Systems range from simple hopper loaders to complex microprocessor-controlled distribution and batch-weighing systems for up to eight ingredients with an accuracy rate of +/-0.25%. Metering occurs on a signal from either the controller, the injection blowmolding machine or film line, or in conjunction with extruder speed. Vacuum or pressure systems for rates up to 175-200,000 lb/hr and size ranges from 1 to 500 hp are available. Company offers Phillips-style blending silos with capacities up to 250,000 lb, as well as welded and bolted silos to 1 million lb capacity.

Also provided is a wide range of filtration devices, using various filter media and pulse-jet blowback for maintenance-free filter cleaning. Automatic bulk-bag unloading systems, bag-dump stations, surge bins, and various types of receivers are available.

Full controls for SPC and SQC are available with RS232 and IEEE488 interfaces. Systems may also include a centralized production control at various locations throughout a plant, as well as outside via modem.

PACIFIC PNEUMATICS, INC.

Offers engineering, design and installation of pneumatic conveying components and systems. Rotary positive blowers and vacuum pumps are available in a variety of sizes. Components such as airlocks, diverter valves, scale valves, and control panels are offered as component sales or are available integrated into custom systems. Railcar unloaders and in-plant transfer systems are typical types of systems offered. Filters and filter receivers, using porous polyethylene filter tubes, are said to help reduce the size and cost of components. Bin dischargers are used to remove air-activated powdered materials out of silo bottoms. Noise enclosures are available for reducing objectionable noise from positive displacement blower installations.

PLASTICS ANCILLARIES CORP.

Offers a complete line of Transitube auger system materials handling equipment, including flexible hopper loaders particularly suited for powders and mixes of virgin/regrind/additives.

PROCESS CONTROL CORP.

Manufactures a full line of pneumatic materials handling equipment for plastics. Standard products include vacuum and pressure systems covering a range of throughput from 200 to 20,000 lb/hr. The standard range of pumps are complemented by a full line of accessories including vacuum receivers for pellets, regrind, and powders; cyclones; and standard and customized pipe fittings. Company manufactures both standard and custom control panels using relay logic or programmable controllers, and specializes in custom-engineered systems to fit customer's needs.

Whole plant materials handling systems are available using standard or custom-designed components. Resins are moved from railcars to storage facilities, from storage into the plant to multiple locations for further treatment such as blending, and then delivered to the use point. All systems can be integrated to fill customer's requirements.

Individual self-contained loaders in a variety of sizes are also available.

Recently developed components enable the company to handle some historically very difficult materials such as talc and some other nonfree flowing materials. Testing facilities are available for establishing the conveying characteristics of problem materials.

SCREW CONVEYOR CORP.

Offers extensive lines of screw conveyors, drag conveyors, bucket elevators, screw feeders, inclined tubular screw conveyors, screw lifts and hydraulic truck dumpers. In addition to carbon steel, company can produce products in galvanized steel, stainless steel, Cor-Ten, Monel or Incolloy. Product and application engineering support is available at headquarters in Hammond, Ind.

SEMCO, INC.

Offers complete design and manufacturing capability in the area of pneumatic loading, conveying, and storage. Manufactures blower packages, rotary valves, diverter valves, weighing and batching systems, storage silos, and many other components which are combined with the appropriate controls to provide a complete operating system, from high-capacity rail unload to storage, to individual extruder feed systems. Company provides sole-source responsibility from concept, testing, design, manufacturing, installation and after-sale support.

STORCH MAGNETIC PRODUCTS CO.

Manufactures magnetic housing that are designed specifically to entrap and separate ferrous fragments from any nonferrous material. The housings protect machinery by filtering out undesirable contaminants and producing a purer, cleaner product. They are ruggedly constructed to support the weight of material hoppers, dryers, mixers, etc. Company also manufactures other related magnetic purification equipment.

STREAM INDUSTRIAL SYSTEMS, INC.

Manufacturer of filterless, closed-loop pneumatic materials handling systems. Patented design reportedly provides: 1) improved product quality by eliminating exposure to moisture and other contamination in ambient air, 2) improved profitability by eliminating filters and their associated costs, by reducing energy consumption, and by reducing maintenance with brushless motor, 3) improved working environment by eliminating dusting, contamination, and by reducing noise levels; and 4) improved flexibility through modular design and full line of accessories.

The B Series of loaders are specifically for pellets and granulates; the C Series are specifically for powders and dusty materials. A wide range of models are available from economical, low-capacity, 100-lb/hr units to high-capacity, 10,000-lb/hr systems.

THORESON-McCOSH INC.

Manufactures automated bulk storing, pneumatic handling, conveying, blending, drying and loading systems that unload rail cars or trucks and end up feeding the blended, dried, and preheated raw material directly into the molding machine or extruder-hopper.

A large variety of dryers in various types and capacities are available with microprocessor or standard controls. Blending systems vary from mini-blenders that blend small amounts of material in preset proportions, to huge machine or floor-mounted blenders that blend up to 20,000 lb/hr.

Company also manufactures items like belt conveyor systems, pellet tilters that tilt automatically when the center of gravity shifts to help draw the last bit of material from a container, and beside-the-machine, self-contained material loaders.

TUTHILL CORP. M-D PNEUMATICS DIV.

Manufactures and assembles rotary-positive displacement blowers for pneumatic conveying. Sizes range in flow from 50 to 10,000 cfm in vacuum or pressure applications. Custom blowers made from exotic materials such as stainless steel and aluminum can be designed and produced for specific needs. Complete packages, including the base, drive components, silencers, and accessories are also available.

UNIVERSAL DYNAMICS CORP.

Provides a full range of materials handling products and services. Vacuum and pressure pneumatic conveying systems are designed to work efficiently (conveying rates of 100 to 40,000 lb/hr plus) with all types of plastic resins. On-the-press, self-contained vacuum loaders and central conveying systems service up to 24 individual delivery points. Bulk material storage silos and railcar unloaders are sold as basic equipment packages or as a completely designed, engineered and installed plant system. Self-contained vacuum loaders convey up to 1200 lb/hr at conveying distances approaching 60 ft. Central (in-plant) conveying systems run up to 20,000 lb/hr at distances approaching 500 ft. Central power unit utilizes positive displacement pumps driven by a 3 to 25 hp motor.

Omni III microprocessor controls feature alarms to monitor the system's performance and flexibility to control several individual systems through one central controller. Conveying line sizes are 2-4 in. OD. A wide range of material vacuum receivers allows the flexibility to handle material requirements of everything from critical applications of small injection molding machines to high throughput extrusion lines.

Railcar unloaders with single- or double-blower vacuum/pressure systems are supplied in 30, 40 and 50 hp and are designed for conveying distances exceeding 1000 ft.

VAC-U-MAX

Designs and manufactures pneumatic and mechanical handling systems for powders, pellets, regrind, small parts and other dry materials. Systems range from simple up-and-in hopper loaders assembled from standard components to complex microprocessor-controlled distribution and batch weighing systems for multiple ingredients. Check-sieving, sizing and separation of ferrous contaminants can be incorporated in-line.

Standard system components include bulk-bag unloaders, bag-dump stations, feedbins, various types of receivers, electric and pneumatic vacuum power sources, a wide selection of filtration devices and controls ranging from on/off switches to computer-compatible, microprocessor-based panels with illuminated system displays.

A full line of heavy-duty industrial vacuum-cleaning equipment is also offered for wet and dry operation powered by electricity or compressed air. Portable models, high-capacity material recovery systems and custom-designed multiple outlet systems with central vacuum source are available.

VIBRA SCREW, INC.

Produces a wide range of controlled-vibration equipment to assist and improve accuracy of screw and belt feeders, designed to aid in the processing of dry-bulk material. Application of controlled vibration in the discharge of materials from storage bins, and in feeding with gravimetric and enmasse feeders with feeding and metering accuracies as high as +/-1/4% to +/-1/2% of set rate are offered.

Company's MassWeigh moves floodable, dusty and other hard-to-handle materials continuously at accuracies of +/-1/2%. MassWeigh uses evenly spaced pusher blades circulated by chain from inlet to discharge in a closed-feed trough. Controlled vibration at the bulk-supply hopper and discharge increase accuracy, as does weighing the entire feeder unit with material included.

Company manufactures a broad range of feeding and metering equipment, including bin activators, bulk-bag unloaders, volumetric screw and belt feeders, all types of gravimetric feeders, blenders and electronic controls.

B.E WALLACE PRODUCT CORP.

Produces gantry cranes for use in materials handling, which load and unload everything from raw materials to finished products to and from storage units, trucks, railroad cars, and barges. Cranes range from 3/4- to 15-ton capacities, with heights from 4 to 24 ft and spans to 35 ft.

WALTON-STOUT, INC.

Provides pneumatic rail unload and machine-load conveying systems for powder or pellets, including vacuum pump packages, filter systems, vacuum receiver chamber level control switches, RJ-5 powder filters, virgin/regrind receivers, and pellet receivers. Standard options include NEMA 1 or NEMA 12 disconnects (fused or nonfused on the pump), sound enclosures, and stainless steel construction. Internal check valves are standard in all receivers from common line systems.

Company also offers a weigh blender with a capacity range from 600-5000 lb/hr. Up to six ingredients can be processed. Microprocessor controls offer up to 80 different formulas.

WHITLOCK DIV. AEC, INC.

Manufactures complete pneumatic materials handling systems, including individual and central vacuum-loading systems, continuous vacuum/pressure unloading/loading systems for rates of up to 25,000 lb/hr. Sizes range from 1 through 100 hp conveying systems for free-flowing materials.

Also offered are individual venturi-type loaders, the PowdrPump semidense-phase powder conveyor, and a complete line of smooth wall-welded, bolted, and galvanized corrugated, bolted storage silos and related accessories.

Vacuum systems feature microprocessor-based programmable controls and patented nonreversing valves with pulse-jet blowback for maintenance-free filter cleaning.

Company will provide complete turnkey installation services, including startup and training seminars.