Plastics & Packaging Corp. offers the FT Series of thermoformers. The Cedar Grove, N.J., company said the FT machine has a 7-inch stroke for deep-draw parts. A pull-down form and trim press provides a clean forming space. No toggles, hoses or piping are above the sheet line. The self-contained hydraulic power package can be located away from the machine.
The frame sits 18 inches off the floor, for easy removal of any debris during forming. Those features make the machine suitable for medical and pharmaceutical thermoforming, according to the company.
Tel. (201) 256-2033.
Coexturder aimed at high-precision uses
Harrel Inc. of East Norwalk, Conn., has introduced a new line of coextrusion lines for high-pre-cision multilayer tubing, called Geartruders.
The equipment uses Harrel'spatented Tubetrol process to control the outside and inside diameters and the ratio of thethickness of each layer to all the rest.
Each extruder has a precision gear pump to stabilize the flow from the extruder and eliminate interaction between extruders.
Also from Harrel is a new crosshead die for precision tubing and wire coating, the CD-600. The dies have an improved thermal design with control of the temperature at the end of the bushing independent from the temperature of the main die body.
Tel. (203) 866-2573.
Maguire intorduces MPF power feeder
Maguire Products Inc. of Media, Pa., introduced the MPF powder feeder at the extruder throat for metering additives, even with materials that do not flow well.
Maguire said MPF feeders have improved accuracy from other volumetric feeders because the units count the rotations of feed augers instead of using timers or motor speed control.
A microprocessor-based controller adjusts metering speed to compensate for changing cycle times, varying torque requirements or voltage fluctuations.
Also new from Maguire is the Series MLG-4 ``Little Guy'' Concentrate Feeder, designed forsmall processing machines.
Unlike most feeders that require cantilever mounting, the MLG-4 has a balanced design so the hopper and electric motor serve as counterweights to each other, giving it a low profile. Price is $1,995.
Tel. (610) 494-5353.
Leistritz pelletizer cools without water
American Leistritz Extruder Corp. of Somerville, N.J., has introduced an air-quench pelletizer designed for single- or twin-screw extruders.
A variable-speed air-quenchconveyor allows cooling without water and provides increased support when the polymer strands are on the conveyor with consistent feeding to a strand pelletizer.
A belt conveyor, suited for lab-sized or small-production output, is priced lower than hot-face air pelletizing, Leistritz said.
High-intensity chilled air is directed at the strands immediately after exiting the extruder via Vortec cold air amplifiers. Secondary cooling is supplied by auxiliary ambient blowers.
Tel. (908) 685-2333.
Comet producing new hopper loader
Auxiliary equipment manufacturer Comet Automation Systems Inc. of Dayton, Ohio, introduced a new hopper loader and the third generation of its cart for holding resin dryers.
With a maximum conveying capacity of about 50 pounds an hour, the HL-JIT hopper loader provides a small amount of hot, dry resin available at the feed throat. The new dryer cart makes resin changeovers easier, because the entire dryer can be disconnected and wheeled away to a cleaning station.
Clean-up costs are reduced because the hinged bottom of the material probe box opens easily with no tools.
Tel. (513) 436-2011.
Cullom Machine improves corrugator
Cleveland, Tenn.-based Cullom Machine Tool & Die Inc. said it made several improvements to its HVC 18-48 vacuum corrugator to boost its speed and efficiency.
The centerline is now adjustable to reduce inertia in the shuttle chain to make pipe more quickly.
A self-compensating vacuum manifold has been integrated into the machine to allow the heated mold blocks to swell during operation. The improved shuttle system allows the mold blocks to be picked up and dropped off in unison, eliminating hesitation between pickup and drop-off.
Tel. (423) 476-2982.
One person can run McElroy fabricator
McElroy Manufacturing Inc. of Tulsa, Okla., offers a machine to fabricate large-diameter fittings from polyethylene pipe.
Pipe diameters range from 12-25 inches.
The McHiLYT can be operated by one person when used with a 1-ton overhead hoist. If features a hydraulic manifold block that houses both the control valves and pressure-reducing valves.
The McElroy DataLogger can be added to the control console to log, store, retrieve, printout and download to a personal computer a variety of data for each fusion joint, such as temperature, pressure and timer.
The machine makes three types of joints: L-, Y- and T-shaped.
Tel. (918) 831-9206.
Compounding lines designed as lab units
Wayne Machine & Die Co. of Totowa, N.J., is building turnkey twin-screw compounding lines for devolatization and producing masterbatches, mineral-filled compounds, reinforced polymers and alloys.
The machines are designed for use as laboratory units, for making medical tubing compounds or for continuous high-production applications.
Wayne Machine claims the machines are about 35 percent shorter than comparable European models. The price is about 30 percent lower.
The lines are built around a 25-millimeter Yellow Jacket Co-rotating Segmented Modular Twin-Screw Extruder. They can include gravimetric or volumetric feeders, strand-die, water trough and strand pelletizers.
Tel. (201) 256-7374.
Options available on runnerless systems
Polyshot Corp. of Henrietta, N.Y., announced it now is offering its complete line of runnerless molding systems as optional, complete hot-half assemblies.
The systems come fully assembled, wired, preheated and tested before shipment. They include all necessary water circuits, handling holes, clamp slots and screw holes.
Delivery typically takes six to eight weeks, Polyshot said.
Tel. (716) 359-1660.
Molder turns samples into test specimens
Atlas Electric Devices Co. of Chicago introduced the CS183 Mini-MAX Molder System for compounding and injection molding small polymer samples into test specimens.
The laboratory machine can mold samples from as little as 1 gram of plastic. Residence time is very short, as little as 30 seconds from cold feed to finished sample.
An optional heated C-clamp and molds are available.
Tel. (312) 327-4520.