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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

Heat stabilisers

Manufacturing; Plastic injection molding

These additives increase the ability of the material to withstand the negative effects of heat exposure. They are used to increase the overall service temperature of the material.

A-stage

Manufacturing; Plastic injection molding

This is a very early stage in the reaction of certain thermosetting resins where the molecular weight is low and the resin is still soluble in some liquids and still fusible.

Runner System

Manufacturing; Plastic injection molding

This term is sometimes used for the entire resin feeding system, including sprues, runners and gates, in injection molding.

C-stage

Manufacturing; Plastic injection molding

This term describes the final stage of the reaction where a thermoset material is relatively insoluble and infusible.

Antiozonants

Manufacturing; Plastic injection molding

These additives are used to prevent the negative effects of ozone on the resin materials.

Mould

Manufacturing; Plastic injection molding

To impart shape to a plastic mass by means of a confining cavity or matrix.

Bubbles

Manufacturing; Plastic injection molding

Air or gas pockets that have formed in the material of the component. Bubbles may vary in size.

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