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  • Polystyrene
    Noted for its sparkling clarity, hardness, ease of processing, and excellent colorability, polystyrene is a low-cost amorphous thermoplastic that often competes favorably with higher-priced resins. PS is available in a wide range of grades for injection molding, extrusion, and foam molding
  • Polyolefins
    methods used for expandable polystyrene (EPS). After the beads are expanded (20 to 40 times that of the solid resin) nd conditioned, they are poured into a mold and heated, usually by direct injection of steam. This softens, expands further, nd fuses the particles together, forming a niform, void-free
  • Medical Device Link . Spotlight on Rapid Prototyping
    Stereolithography molds can be built quickly and with less expense than molds made by traditional methods. The process is similar to building stereolithography parts, but the mold is reinforced to withstand injection molding conditions for 50 or more cycles. Although they may not be as attractive
  • Medical Device Link . The Effects of High-Energy and EtO Sterilization on Thermoplastics
    ), and engineering thermoplastic polyurethane (ETPU). The resins listed in Table I were molded into standard ASTM Type 1 tensile bars (16.5 x 1.27 x 0.32 cm) and impact disks (5.08 cm diam x 0.32 cm thick). All resins were injection molded on the same machine using the manufacturer's recommended molding
  • PLASTICS REFERENCE GUIDE
    . The Tek-PEARLite FlipFlop concentrates are formulated for homopolymer polypropylene (PP), clarified PP, polyethylene, transparent poly-styrene and flexible PVC. They are suited for injection or blow molding and conventional extrusion. Leco Plastics Inc., Hackensack, N.J., extruded decorative belts

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