8 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
land area
Manufacturing; Plastic injection molding
The area of surfaces of a mold which contact each other when the mold is closed.
orientation
Manufacturing; Plastic injection molding
the arrangement of the molecules of the melt. If the molecules are orientated, they are aligned with each other; if non-orientated they are not in alignment. In general, orientated material shrinks ...
stiffness
Manufacturing; Plastic injection molding
The capacity of a material to resist elastic displacement under stress.
coefficient of thermal expansion (CTE)
Manufacturing; Plastic injection molding
The change in length of a material for a unit change in temperature, per unit of length.
gate
Manufacturing; Plastic injection molding
The channel through which the molten resin flows from the runner into the cavity.
molding pressure
Manufacturing; Plastic injection molding
The pressure applied to the ram of an injection machine or press to force the softened plastic completely to fill the mold cavities.
injection pressure
Manufacturing; Plastic injection molding
The pressure on the face of the injection screw or ram when injecting material into the mold, usually expressed in PSI.
