There’s a revolution in technology to make planes lighter. Use of composites in the Boeing 787 Dreamliner is well known. Not so well known is a new hexagonal honeycomb core material made of polylactic acid for lightweight panels. The biobased material also has the benefit of a smaller carbon dioxide footprint than oil-based plastics. In the last six months, a Belgian company called EconCore has optimized the production technology to produce PLA-based hexagonal honeycomb cores using a continuous production process. Moments after a core is produced, skin layers are added in a second step of the continuous production process.
Skins could be made from unfilled PLA material to make a mono material panel or, in case a higher performance is required, could be replaced with consolidated flax in a PLA matrix. One potential application is aircraft interiors, which currently use a polypropylene honeycomb material. The new technology was launched at the recent JEC Composites show in Paris.
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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