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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.

Contributors in Plastic injection molding

Plastic injection molding

brighteners

Manufacturing; Plastic injection molding

Are used to add smoother or brighter coatings or finishes.

pulled gate

Manufacturing; Plastic injection molding

Area where the part was connected to the sprue or runner that has been drawn out or stretched from the surface.

dominant flow path

Manufacturing; Plastic injection molding

At the juncture of two confronting flows the dominant flow will reverse the direction of the other.

robot

Manufacturing; Plastic injection molding

Automated devices for removing parts upon ejection from an open mold rather than letting the parts drop. Also see parts picker. Robots also can perform secondary functions, such as inspection, ...

hopper loader

Manufacturing; Plastic injection molding

Auxiliary equipment for automatically loading resin pellets into machine hopper.

hopper dryers

Manufacturing; Plastic injection molding

Auxiliary equipment that removes moisture from resin pellets.

mold-temperature-control unit

Manufacturing; Plastic injection molding

Auxiliary equipment used to control mold temperature. Some units can both heat and cool the mold. Others, called chillers, only cool the mold.

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