The news is full of bankruptcies at shoot-and-ship plastics processors, particularly those who serve the price-focused automotive industry. But if you have a specialty, business is great. Take for example, Micromold Products of Yonkers, NY, which specializes in production of PTFE and PVDF parts for handling of corrosive liquids. There’s technology in the design as well as in the handling of the materials. Two patents for fluid handling show the trend. PTFE, either compression molded or formed from shapes, replace glass, which is extremely brittle, inflexible, and subject to manufacturing imperfections. Other proprietary technology is used in the fusion process. PTFE has a high coefficient of expansion and the lowest coefficient of friction of any known solid material. Micromold was started in 1950 by a former scientist at DuPont, where PTFE was commercialized as Teflon. One thing interesting about Micromold: Despite its name, it does no injection molding. Why the name? “That’s lost in the mists of time,” laughs Claude Berman, engineering manager. Micromold’s sales are up about 30 per cent in the past three years.
Airbus Defence and Space has 3D printed titanium brackets for communications satellites. The redesigned, one-piece 3D-printed brackets have better thermal resistance than conventionally manufactured parts, can be produced faster, cost 20% less, and save about 1 kg of weight per satellite.
At IMTS last week, Stratasys introduced two new multi-materials PolyJet 3D printers, plus a new UV-resistant material for its FDM production 3D printers. They can be used in making jigs and fixtures, as well as prototypes and small runs of production parts.
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