Additives are an area where design engineers could focus a little more time and attention. When added to plastic resins, these chemicals impart a needed property and they also change the mechanical characteristics of the compound. There are also new technologies emerging that can save time and money. One I saw recently comes from Carolina Color of Salisbury, NC. A new process creates so-called “super concentrates”. “G2 has overcome processing challenges with a proven ability to provide exceptionally effective dispersion and distribution in both large and small parts,” says President Matt Barr. The new G2 product line is claimed to save up to 30 per cent in color cost and allow processing at lower temperatures, which can save up to 10 percent in cycle time. Part thickness can even be reduced because of improved physical properties. That also means reduced cycle time and clamping force. It’s worth a look.
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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