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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

Moisture absorption

Manufacturing; Plastic injection molding

The pick-up of moisture from the environment by a material.

Platens

Manufacturing; Plastic injection molding

The mounting plates of a press on which the mould halves are attached.

Stress cracking

Manufacturing; Plastic injection molding

There are three types of stress cracking: 1. Thermal stress cracking is caused by prolonged exposure of the part to elevated temperatures or sunlight. 2. Physical stress cracking occurs between ...

Blocking & anticaking agents

Manufacturing; Plastic injection molding

These additives are used to prevent the adhesion and agglomeration of ingredients within a resin compound.

Moulding sensitivity

Manufacturing; Plastic injection molding

The variability of the pressure to fill the cavity and temperature of the melt at the part as influenced by changes in injection time and barrel melt temperature.

Breakdown voltage

Manufacturing; Plastic injection molding

The voltage required, under specific conditions, to cause failure of an insulation material. See Dielectric Strength.

Cure cycle

Manufacturing; Plastic injection molding

The time periods at defined conditions to which a reacting thermosetting material is processed to reach a desired property level.

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