Automated controls run coextrusion line
Norwalk, Conn.-based extruder maker Harrel Inc. said its GT-610 brings automated control to a coextrusion line.
Control of both extruders is in a single panel, mounted on the movable arm in front of the system, so it is convenient for the operator during the extrusion process. The GT-610 controls the extruder's parameters, but also directly controls the process, including outside diameter, inner diameter, the length, melt temperature and pressure of the final product.
According to Harrel, on a standard coextrusion line, each extruder is run by a controller mounted to that extruder, so the operator has to move from one extruder to the other, and down near the die, to where the extrusion action takes place.
The GT-610 uses Harrel's Tubetrol system.
Tel. 203-866-2573, fax 203-866-1483, e-mail [email protected]
LPKF system used to weld taillights
LPKF Laser & Electronics AG reports that South Korean automotive parts supplier, SL Corp. of Taegu, is welding automotive taillights with hybrid laser welding systems from its LPKF Laserquipment division.
LPKF Laser said its equipment is an economical way to weld large plastic parts. Applications include automotive, medical technologies and consumer goods.
LPKF is headquartered in Garbsen, Germany. Its U.S. arm is in Tualatin, Ore.
Tel. 503-454-4200, fax 503-682-7151, e-mail [email protected]
PCC inventory system manages resin pellets
Atlanta-based auxiliary equipment maker Process Control Corp. has introduced a gravimetric inventory management system, to help processors accurately weigh and store resin pellets or repelletized material.
The system weighs repelletized material before it is reprocessed or stored as inventory. The system also can be used to verify delivered resin before entering it as inventory.
Pellets are conveyed into a surge hopper through a pressure or vacuum system. The hopper has a high-level view window for quick visual checking, plus a high-level proximity sensor to shut the system down to prevent overfilling.
The material then gets discharged from the surge hopper through a slide gate, into a gaylord box, or a conveyor to a storage silo or a bin.
The inventory management equipment can be set up to operate in a continuous mode for loading silos or surge bins, or as a batching system for loading gaylord boxes for storage.
It can provide totals for a given production shift, a full run or an overall running total of material.
The system is controlled with a touch-screen interface.
Tel. 770-449-8810, fax 770-449-5445.
Mold-making process heats, cools quickly
Gas Injection Worldwide Ltd. has launched robotic metal spraying technology for making injection molds that heat and cool rapidly.
The technology was developed by Oxford Moulding Technology Ltd. of Oxford, England, a collaboration of Gas Injection Worldwide and the University of Oxford. Gas Injection claims exclusive rights to the technology, which it licenses from the university.
The controlled spraying process reduces the thermal mass within a mold, which allows it to be heated and then cooled quickly during a molding cycle. The technology also produces blemish-free, high-gloss moldings, with no flow lines and streaks, the company said.
Gas Injection Worldwide, a former division of Hong Kong-based Gas Injection HK Co. Ltd., began trading Aug. 1 as an independent company in the United Kingdom.
Terry Pearson, former chairman of Cinpres Gas Injection Ltd., is the chairman of Gas Injection Worldwide and Oxford Moulding. Raymond Foad is sales director.
Tel. 31-433-261-257, e-mail [email protected]ection-ww.com.
Thermasleeve heats hot-runner nozzles
St. Louis-based Watlow Electric Manufacturing Co. said its Thermasleeve nozzle heater creates a precise temperature control for hot runners, with a low-profile design.
Thermasleeve was designed to have intimate contact with the surface of the nozzle, optimizing heat transfer. That contact, combined with lower heater mass, gives a rapid thermal response to the nozzle tip, cutting cycle times and ensuring quality parts, Watlow said.
The heater is easy to install and remove, and slotted to accommodate off-the-shelf thermocouples.
Tel. 314-878-4600, fax 314-878-6814, e-mail [email protected]
Businesses can shred plastic bottles on-site
Harden Industries Ltd. of Guangzhou, China, has introduced a small shredder - small enough to recycle plastic bottles in restaurants, supermarkets and car maintenance shops.
The feed-throat measures just 16 inches by 16 inches. The plastic shredder is driven by a 4 kilowatt motor.
Tel. 86-20-8831-1184, fax 86-20-3846-5685, e-mail [email protected]
Tool-Less method met short lead time
Tool-Less Plastic Solutions Inc. of Mukilteo, Wash., built a low-volume cabinet for MTS Nano Instruments of Oak Ridge, Tenn., facing a short lead time.
MTS needed to make changes quickly on beta-test units. The cabinet enclosure measures 34 inches by 34 inches by 28 inches. It features gas springs for door-assist, gaskets and double walls filled with urethane insulating foam.
Tool-Less fabricated the cabinet from high-impact polystyrene sheet, from individual plastic pieces that are machined and processed separately. Using computer numerically controlled routers, each part is machined from the flat sheet, then bent and finished.
During assembly, the parts are simply snapped into premachined locator recesses and grooves, almost like Lego pieces - without tools. They are solvent-bonded in place.
Tool-Less shipped the first enclosure four weeks after it received the purchase order.
Tel. 425-493-1223, fax 425-493-1122, e-mail [email protected]