Novelis, an Alcan spinoff that is now part of the Aditya Birla Group, has developed a new aluminum alloy that is making impressive gains in automotive and elsewhere. Novelis Fusion is based on a conventional direct chill (DC) mold that is modified in order to allow multiple metal streams to be cast into one single aluminum sheet ingot. The result is an alloy, not unlike multilayer polymer sheet, that is joined together by a metallurgical bond. One of the heavyweight users is the BMW 7 Series, which uses lightweight door components made from Novelis Fusion. A new grade (PA221) designed for appliances is also now available.
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.
Plastic bags can become useful as either raw materials for plastics or feedstock for fuel. It's when they're not recycled that they become a major problem. That's what California's bag ban will prevent.
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