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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
Design review
Manufacturing; Plastic injection molding
A review of a blueprint, of an application, to be moulded in a plastic material, with recommendations given for design, material, processing, tooling.
Pinpoint gate
Manufacturing; Plastic injection molding
A restricted gate of 0.030 in or less in diameter, this gate is common on hot-runner molds.
Ejection pin
Manufacturing; Plastic injection molding
A rod, pin or sleeve that pushes a moulded part off of a core or out of a cavity of a mold.
Nest plate
Manufacturing; Plastic injection molding
A retainer plate in the mould with a depressed area for cavity blocks.
Thermal degradation
Manufacturing; Plastic injection molding
Deterioration of the material by heat, characterised by molecular scission.
Creep
Manufacturing; Plastic injection molding
Due to its viscoelastic nature, a plastic subjected to a load for a period of time tends to deform more than it would from the same load released immediately after application, and the degree of this ...
Runner balancing
Manufacturing; Plastic injection molding
The development of a runner system which delivers the required amount of melt to each cavity with the correct pressure to finish filling all the cavities simultaneously at the correct temperature for ...
