Plastics Technology

JUN 2013

Plastics Technology - Dedicated to improving Plastics Processing.

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lower stresses in the material as well as shorter cycles than are possible with variotherm (heat/cool) processes. The process was demonstrated molding a PC lens with Fresnel ridges for a cell phone. Wittmann Battenfeld also unveiled a version called Hi-Q LSR for liquid silicone rubber micro parts. It requires a special injection unit with a water-cooled barrel for the dosing screw and a water-cooled injection plunger. Small (1-liter) LSR cartridges can be mounted inside the machine cabinet, maintaining a self-contained clean-room system. Hi-Q LSR was demonstrated on a 5-ton MicroPower system molding 0.75-mg medical implants in two cavities. The modular MicroPower system can be converted between thermoplastic and LSR in about 2 hr. HIGH-SPEED ELECTRIC MOLDING Moving a bit up the size scale, Wittmann Battenfeld introduced its EcoPower Xpress system as part of its continuing development of ever faster all-electric molding machines. Demonstrated on a 180-m.t. press, it utilizes a special injection unit with a rack and pinion instead of ballscrews. It is said to be capable of 450 mm/sec injection, competitive with an hydraulic accumulator. Such high-speed molding requires an equally speedy robot, so this demonstration afforded an opportunity to show off the company's new booster axis for side-entry robots. Called "AllWheel Drive," it utilizes two synchronized servo motors to MicroPower Hi-Q Micro LSR Injection Unit LSR Loading Dosing Screw Central Cooling System Water-cooled Barrel Platen Cooling on Both Sides for Injection Unit Water-cooled Injection Plunger A new high-precision injection-compression process for LSR micro-molding is called Hi-Q LSR. A special watercooled injection unit uses 1L silicone cartridges for a self-contained process within the machine enclosure. A different injection module is available for Hi-Q thermoplastic micro-molding of parts with low stresses and accurate reproduction of micro features. The Trusted Name in Affordable Mold Temps & Portable Chillers Now Has Loaders In Stock Too! • Throughputs up to 500 lbs/hr • Remote Mount Mini PLC Control • Built In The USA! • In Stock and Ready to Ship TODAY! • Prices Starting at just $895 and... Delivery by FedEx Freight is Included! $895 Includes ! Delivery VL-12-T Micro PLC Control VL-5-MM-T Machine Mount Model Visit Us on the Web or Call Today! www.Temptek.com • sales@Temptek.com 1-317-887-6352 VL-5-T Model VL-5-T VL-5-MM-T VL-12-T VL-12-MM-T VL-19-T VL-19-MM-T RESIN CAPACITY 5 lb. 5 lb. 12 lb. 12 lb. 19 lb. 19 lb. PRICE $895 $1,295 $1,350 $1,495 $1,495 $1,695 14 june 2013 Plastics technology

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