casting Materials. Any resin available in liquid form can be cast. Castable resins include phenolics, polyesters, epoxies, silicones and acrylics. Types of molds. The type of mold used depends on the plastic, the size and shape of the part, and…
Advantages and Disadvantages of Plastics The growth of the polymer industry in the latter half of the 20th century has been phenomenal and shows no signs of decreasing. If the advantages of synthetic polymers over competing materials such as metals and…
plastic molding term Heat-distortion temperature (°F) at fiber stress of 264 psi (ASTM D 648) is a statement of the temperature required to permit an arbitrary standard amount of deflection by a standard load, in a test in which the…
Cost of injection molding parts In three forms it is important to consider how the costs of injection molding are determined: Cost Related To The Injection Molding To assess molding prices, four basic elements must be analyzed: The volume or…
shrinkage It is important to recognize that each plastic has its own inherent characteristics. A molded piece shrinks after being formed in the mold, which is called shrinkage. Plastic shrinkage is one of the most common defects in injection molding.…
Name Abbreviation Application General Purpose Polystyrene PS Lampshade, instrument housing, toys, etc. High Impact Polystyrene HIPS House ware, electrical components, toys, etc. Acrylonitrile Butadiene Styrene ABS instrument housing,House ware, advanced toys, sports goods Acrylonitrile Styrene AS(SAN) Daily transparent containers Butadiene…
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