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Plastic injection molding
Plastic injection molding is the primary process for manufacturing plastic parts used in consumer goods such as computer keyboards, monitors, bottle caps, cups and solid plastic articles. Plastic is known to be a very versatile and economical material that is used in many applications. Injection molding involves taking plastic in the form of pellets or granules and heating this material until a melt is obtained. Then the melt is forced into a split-die chamber/mold where it is allowed to "cool" into the desired shape. The mold is then opened and the part is ejected, at which time the cycle is repeated.
Industry: Manufacturing
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Plastic injection molding
Short shot
Manufacturing; Plastic injection molding
Failure to completely fill the mould or cavities of the mold. Edges may appear melted.
Subgate
Manufacturing; Plastic injection molding
Entrance to the part from the runner located below the parting line. On ejection the part breaks away from the subgate.
Non-fill
Manufacturing; Plastic injection molding
Failure to completely fill the mould or cavities of the mold. Edges may appear melted.
Edge gate
Manufacturing; Plastic injection molding
Entrance to the part from the runner located on the parting line.
Ejector return pins
Manufacturing; Plastic injection molding
Projections that push the ejector assembly back as the mould closes. Also called surface pins or return pins.
Cryogenic processes
Manufacturing; Plastic injection molding
Reduction of parts to very low temperatures usually associated with liquid nitrogen. Commonly used to create assemblies or to deflash or degate a part.
Melt flow
Manufacturing; Plastic injection molding
Rate of extrusion of molten resin through a die of specified length and diameter. The conditions of the test (e.g. temperature and load) should be given. Frequently, however, the manufacturer's data ...
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