5 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
sprue
Manufacturing; Plastic injection molding
The feed opening provided in injection molding between the nozzle and cavity or runner system.
packing
Manufacturing; Plastic injection molding
The filling of the mold cavity or cavities as full as possible without causing undue stress on the molds or causing flash to appear on the finished parts. Over- or under-packing results in less than ...
clamping force
Manufacturing; Plastic injection molding
The force applied to the mold to keep it closed, in opposition to the fluid pressure of the compressed molding material within the mold cavity and the runner system.
stress
Manufacturing; Plastic injection molding
The force producing or tending to produce deformation in a body measured by the force applied per unit area.
cross-linking
Manufacturing; Plastic injection molding
The formation of chemical links between the molecular chains in polymers. This process can be achieved by chemical reaction, vulcanization, and electron bombardment.
ram
Manufacturing; Plastic injection molding
The forward motion of the screw in the plasticator barrel that forces the melt into the mold cavity.
linear thermal expansion
Manufacturing; Plastic injection molding
The fractional change in length of a material for a unit change in temperature.
