A start-up company in New York has developed a new vibration-proof fastening system that offers interesting opportunities for plastics molding. The company, called Permanent Technologies, uses a patented system in which the nut has one or more tines that work in conjunction with longitudinal bolt thread channels to prevent counter rotation and loosening. Months-long testing on U.S. Navy Hovercrafts proved the concept. Engineers are often loathe to try new designs, but this is worth a look—particularly if you’re experiencing failures due to vibration. Some cool design ideas are possible. Take a pump assembly for example. Permanent Technologies can produce a cut-out underneath the pump cover and put a hexagon-shaped tine in the hole located in the body of the assembly. Then put the cover on and put a bolt through the cover. The bolt would then click through the tines just as if they were on top of a nut. You get vibration-proof blind hole fastening. And that translates well into injection molding, where undercuts can be mass produced at high speeds with tool action.
Dow Chemical and several other companies have launched a program in Omaha, Neb. to divert about 36 tons of plastics from landfills in its first phase, and convert it into energy used for cement production.
A make-your-own Star Wars Sith Lightsaber hilt is heftier and better-looking than most others out there, according to its maker, Sean Charlesworth. You can 3D print it from free source files, and there's even a hardware kit available -- not free -- so you can build one just in time for Halloween.
Some next-generation bio-based materials are superior in performance to their petro-based counterparts, but also face some commercial challenges. This is especially true of certain biopolymers, adhesives, coatings, and advanced materials.
Cars and other vehicles, as well as electronics and medical devices, continue to lead the use cases for the new plastics products we've been seeing, as engineers design products for tougher environments.
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