Trinetics Group Inc. of Sharon, Pa., received a patent last month for its Directed Infrared noncontact welding technology, a process in which the plastic parts never come into direct contact with the infrared array. This new method enables plastics processors to bond intricate components with cooler, safer and more energy-efficient noncontact welds, the company said. It uses a shorter heat cycle, resulting in energy efficiency and cooler work areas, said David Hofius, president of Trinetics.
The Directed Infrared process eliminates material buildup on the welding arrays, reducing the need for press ventilation systems, according to Trinetics. It also reduces joint consumption and flashing, as well as maintenance and downtime.
Trinetics specializes in the development of thermoplastic assembly systems including ultrasonic and staking systems.
Tel. (412) 346-4140.
Copolymers improve prototype quality
DTM Corp. is introducing a family of amorphous copolymers it says can improve the sharpness, surface detail and crispness of prototypes made in the DTM Sinterstation 2000 system.
Tom Lee, vice president of marketing, said the in-house development of the new material, named TrueForm, is one result of the addition of materials specialists to the DTM staff, which has more than tripled to about 100 in the past five years.
Lee said the company now is able to select a market it intends to penetrate and then develop material for that market or a particular application.
DTM, based in Austin, Texas, says the variety of materials that can be used in the Sinterstation for prototype and model making makes it more versatile than machines using photo-sensitive plastic solutions or paper. Introduction of TrueForm, Lee said, further enhances that advantage.
``It takes about 30 minutes or an hour to clean TrueForm out of the machine when you're doing a soft tool and change it over to metal powder and do a hard tool, all using the same process. It's material flexibility and application flexibility that makes this so remarkable,'' Lee said.
Sinterstation systems create three-dimensional objects, layer by layer, from powdered materials using laser heat. Materials include nylons, polycarbonate, steel and soon, TrueForm.
Tel. (512) 339-2922.
Chinese operation trouting blow molder
A joint-venture company that makes small blow molding machines in China plans to display its KB 2.01 S60/20 machine, capable of making containers up to 5 liters in volume, at Aseanplast '96, set for March 12-15 in Jakarta, Indonesia.
The Shunde, China-based company, Krupp Chen Plastics Technology Co. Ltd., was set up in 1994. Partners are Krupp Kautex Maschinenbau GmbH of Bonn, Germany; Chen Hsong Holdings Ltd. of Hong Kong; and Shunde Sunny Group Corp of Shunde.
Almost 80 percent of the KB 2.01 S60/20's components are made in China.
Tel. +49 (201) 188-2823.