The US Patent office yesterday granted Apple Computer a patent for a process called double back injection molding used to make electronic housings. The process allows the distinctive glowing border effect in Microsoft's Zune player . The process allows creation of two different color effects as well as improved structural characteristics of the border wall. it avoids expensive and complicated action in tools. Apple uses double shot injection molding for both iPods and iMac desktop computers, which have a clear shell over a black or white layer. “The two shot injection process allows for a thinner walled enclosure that uses less materials and allows for added structural features that would not be possible using traditional molding techniques,” according to the patent summary. It was not clear, but seemed apparent, that Microsoft may have to pay a licensing fee to continue use of the process. One blogger stated, without documentation, that Apple was stealing Microsoft’s idea. Apple was not available for comment.
Although plastics make up only about 11% of all US municipal solid waste, many are actually more energy-dense than coal. Converting these non-recycled plastics into energy with existing technologies could reduce US coal consumption, as well as boost domestic energy reserves, says a new study.
This year's Dupont-sponsored WardsAuto survey of automotive designers and other engineers shows lightweighting dominates the discussion. But which materials will help them meet the 2025 CAFE standards are not entirely clear.
Artificially created metamaterials are already appearing in niche applications like electronics, communications, and defense, says a new report from Lux Research. How quickly they become mainstream depends on cost-effective manufacturing methods, which will include additive manufacturing.
SpaceX has 3D printed and successfully hot-fired a SuperDraco engine chamber made of Inconel, a high-performance superalloy, using direct metal laser sintering (DMLS). The company's first 3D-printed rocket engine part, a main oxidizer valve body for the Falcon 9 rocket, launched in January and is now qualified on all Falcon 9 flights.
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