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Acetal Shape

 

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Plastic plate, rod and stock shapes include shaped plastic parts and plastic stock. They are fabricated through various processes and available in many different forms and sizes.
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  • Machining Guidelines for High Performance Materials (HPMs) (.pdf)
    Machining of plastic stock shapes provides end users the opportunity to economically produce equipment components and prototype parts in volumes that are significantly lower than what would be cost-effective with injection molding. Acetal and nylon are two of the most widely machined engineering
  • No more "girlie man" gears
    polypropylene. Polypropylene was used because it withstands hot, soapy, chlorinated water. The long-fiber reinforcement creates an exceptionally stiff and dimensionally stable housing. The other gears shown are made of Celcon acetal copolymer. Close-up of a Celcon GC25A acetal-copolymer gear used
  • No-static plastics
    Static-dissipative plastics offer special properties that help keep sensitive electronics from harm. Edited by Jean M. Hoffman Special fillers and fibers make resins such as ABS, acetal, polypropylene, polycarbonate, and Ultem dissipate static. Stock shapes such as rod, sheet, and slabs made
  • Plastic Nuts become a hot topic
    plastic nuts let the devices run smoothly, quietly, and stiction-free, without periodic ( external) lubrication. Nuts of acetal-based plastics blended with 15% PTFE (Teflon) lubricant work for light to medium loads and speeds, but can overheat when subjected to high duty cycles and and elevated
  • Thermoplastic Bearings Offer Design Flexibility
    bearings give engineers a new perspective in machine design because the injection-molded assemblies combine the benefits of rolling-element bearings with the functionality of integrated molded features. Thermoplastic bearings are often made from POM (acetal), which is a semicrystalline material with good
  • Medical Device Link .
    and unreinforced formulations. Delrin AF shapes are manufactured with 13% fibrous PTFE, enhancing friction and wear properties. The products are stress relieved, allowing close tolerances and stable dimensions upon machining. Sustaplast (Edgewood, NY; 800/832-6787), whose line of plastics also includes acetal
  • Thermoplastic Composites
    mechanical properties of plastics by a factor of two or more. Tensile strength of nylon, for example, can be increased from about 10,000 psi to over 30,000 psi, and deflection temperature to almost 500 F, from 170 F. A 40% glass-fortified acetal has a flexural modulus of 1.8 10 (to the 6th power) psi
  • Medical Device Link . Top Products and Services of the Year: Reader's Choice (continued)
    An ultrapure, chemical-resistant sponge is made from a patented polyvinyl acetal polymer that is durable, biocompatible, and highly hydrophilic. Available in a range of densities, the sponge can be manufactured in various shapes and sizes through molding and die-cutting. Surface-treated

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