33 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
Back pressure
Manufacturing; Plastic injection molding
The resistance of the molten plastic material to forward flow. In molding, back pressure increases the temperature of the melt, and contributes to better mixing of colours and homogeneity of the ...
Drying
Manufacturing; Plastic injection molding
The removal of moisture from the resin pellets by exposure to certain time and temperature. All Hydroscopic Material must be dried prior to molding.
Barrel
Manufacturing; Plastic injection molding
The section of a moulding machine that contains the feed screw, also the section where resin heating and mixing occurs.
Impact resistance
Manufacturing; Plastic injection molding
The resistance of plastic articles to fracture under stresses applied at high speeds.
Fracture
Manufacturing; Plastic injection molding
The separation of a body, usually characterised as either brittle or ductile.
Mar resistance
Manufacturing; Plastic injection molding
The resistance of glossy plastic surfaces to abrasive action.
Viscosity
Manufacturing; Plastic injection molding
The resistance of material to the flow of a liquid.
