9 Terms
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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
branching
Manufacturing; Plastic injection molding
The modification of the molecular structure of a polymer derived from the growth of a new polymer chain from an active site on an established chain, in a direction different from that of the original ...
degassing
Manufacturing; Plastic injection molding
The momentary opening and closing of a mold during the early stages of the cycle to permit the escape of air or gas from the heated compound.
platens
Manufacturing; Plastic injection molding
The mounting plates of a press on which the mold halves are attached.
fill
Manufacturing; Plastic injection molding
The packing of the cavity or cavities of the mold as required to give a complete part or parts that are free of flash and porosity.
clamp
Manufacturing; Plastic injection molding
The part of an injection molding machine incorporating the platens that provides the force necessary to hold the mold closed during injection of the molten resin and open the mold to eject the molded ...
molding cycle
Manufacturing; Plastic injection molding
The period of time occupied by the complete sequence of operations on a molding press requisite for the production of one set of molded articles.
moisture absorption
Manufacturing; Plastic injection molding
The pick-up of moisture from the environment by a material.
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