20 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
impact resistance
Manufacturing; Plastic injection molding
The resistance of plastic articles to fracture under stresses applied at high speeds.
back pressure
Manufacturing; Plastic injection molding
The resistance of the molten plastic material to forward flow. In molding, back pressure increases the temperature of the melt, and contributes to better mixing of colors and homogeneity of the ...
barrel
Manufacturing; Plastic injection molding
The section of a molding machine that contains the feed screw, also the section where resin heating and mixing occurs.
fracture
Manufacturing; Plastic injection molding
The separation of a body, usually characterized as either brittle or ductile.
shear stress
Manufacturing; Plastic injection molding
the shearing force divided by the area. It is always a maximum at the outside of the flow channel. As it is force-related, it depends on the viscosity of the material, which in turn depends on the ...
molecule
Manufacturing; Plastic injection molding
The smallest unit quantity of matter which can exist by itself and retain all of the properties of the original substance.
ash content
Manufacturing; Plastic injection molding
The solid residue remaining after a substance has been incinerated or heated to a temperature sufficient to drive off all combustible or volatile substances.
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