7 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
Vicat softening point
Manufacturing; Plastic injection molding
The temperature at which a flat-ended needle will penetrate a specimen under a specific load using a uniform rate of temperature rise.
Transition temperature
Manufacturing; Plastic injection molding
The temperature at which a polymer changes from (or to) a viscous or rubbery condition (or from) a hard and relatively brittle one.
Ambient temperature
Manufacturing; Plastic injection molding
The temperature of a medium surrounding an object. The term is often used to denote prevailing room temperature.
Freeze off
Manufacturing; Plastic injection molding
The temperature of the material is reduced to the point that it blocks an area it would fill if it were hotter.
Memory
Manufacturing; Plastic injection molding
The tendency of a plastic article to revert in dimension to a size previously existing at some stage in its manufacture.
Synthetic resin
Manufacturing; Plastic injection molding
The term is use to designate any polymer that is a basic material for plastics.
Blushing
Manufacturing; Plastic injection molding
The tendency of a plastic article to turn white or chalky in areas that are highly stressed.
