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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
Side-draw pins
Manufacturing; Plastic injection molding
Projections used to core a hole in a direction other than the line of closing of a mould and which must be withdrawn before the part is ejected from the mold. See also Retractable Cores.
Mechanical property
Manufacturing; Plastic injection molding
Properties of plastics which are classified as mechanical include abrasion resistance, creep, ductility, friction resistance, elasticity hardness, impact resistance, stiffness and strength.
Pressure pads
Manufacturing; Plastic injection molding
Reinforcements of hardened steel distributed around the dead areas in the faces of a mould to help the land absorb the final pressure of closing without collapsing.
Machine shot capacity
Manufacturing; Plastic injection molding
Refers to the maximum volume of thermoplastic resin which can be displaced or injected by the injection ram in a single stroke.
Gate trim
Manufacturing; Plastic injection molding
Remnant of plastic left over from cutting the component from the runner or sprue, usually to be cut flush with the edge of the component.
Aspect ratio
Manufacturing; Plastic injection molding
Ratio of total flow length to average wall thickness.
Izod impact strength
Manufacturing; Plastic injection molding
A measure of impact strength determined by the difference in energy of a swinging pendulum before and after it breaks a notched specimen held vertically as a cantilever beam.
