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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.

Contributors in Plastic injection molding

Plastic injection molding

insert molding

Manufacturing; Plastic injection molding

Insert molding is the process of molding plastic around preformed metal inserts. This process is compatible with both thermoplastic and thermoset materials.

lubricant

Manufacturing; Plastic injection molding

Internal lubricants, without affecting the fusion properties of a compound, promotes resin flow. External lubricants promote release from metals which aids in the smooth flow of melt over die ...

flow leader

Manufacturing; Plastic injection molding

local increase in thickness to encourage flow in a particular direction.

parting line

Manufacturing; Plastic injection molding

mark on the part indicating where the two halves of the mold met in closing.

striations

Manufacturing; Plastic injection molding

Marks evident on the molded-part surfaces that indicate melt flow directions or impingement.

density

Manufacturing; Plastic injection molding

Mass per unit volume of a substance.

thermal shut-off

Manufacturing; Plastic injection molding

material freezes causing blockage.

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