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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
Strain
Manufacturing; Plastic injection molding
In tensile testing, the ratio of the elongation to the gauge length of the test specimen, that is, the change in length per unit of original length. Stress Concentrators: abrupt changes in geometry ...
Purging
Manufacturing; Plastic injection molding
In extrusion or injection molding, the cleaning of one colour or type of material from the machine by forcing it out with the new colour or material to be used in subsequent production, or with ...
Runner
Manufacturing; Plastic injection molding
In an injection mold, the feed channel, usually of circular cross section, which connects the sprue with the cavity gate. The term is also used for the plastic piece formed in this channel.
Fines
Manufacturing; Plastic injection molding
In the classification of powdered or granular materials such as moulding compounds according to particle size, fines are the portion of the material composed of particles which are smaller than a ...
Mould release
Manufacturing; Plastic injection molding
In injection molding, a lubricant used to coat the surface of the mould to enhance ejection of the moulded article or prevent it from sticking to the tool.
Insert moulding
Manufacturing; Plastic injection molding
Insert moulding is the process of moulding plastic around preformed metal inserts. This process is compatible with both thermoplastic and thermoset materials.
Yield point
Manufacturing; Plastic injection molding
In tensile testing, yield point is the first point on the stress-strain curve at which an increase in strain occurs without an increase in stress.
