20 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
pit
Manufacturing; Plastic injection molding
An imperfection, a small crater in the surface of the plastic.
sink mark
Manufacturing; Plastic injection molding
an indentation on the surface of the part as a result of significant local change in wall section. The mark will occur in the thicker area.
durometer
Manufacturing; Plastic injection molding
An instrument used for measuring the hardness of a material.
land (gate area)
Manufacturing; Plastic injection molding
Gate dimension parallel to the direction of melt flow.
shot capacity
Manufacturing; Plastic injection molding
Generally based on polystyrene, this is the maximum weight of plastic that can be displaced or injected by a single injection stroke. Generally expressed as ounces of polystyrene.
flame retardant
Manufacturing; Plastic injection molding
Having the ability to resist combustion (A flame retardant plastic is considered to be one that will not continue to burn or glow after the source of ignition has been removed.)
