Types of Plastics and Plastic injection molding, Molds parts, Ejectors, Parting lines, Sink marks and other defects.

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Plastic injection molding involves various types of plastics, molds, ejectors, parting lines, sink marks, and defects.

Types of plastics used in injection molding include ABS, polycarbonate, nylon, and polypropylene.
Molds are made of steel or aluminum and consist of two halves that create the parting line.
Ejectors are used to remove the part from the mold and can leave marks on the part.
Sink marks occur when the plastic cools and shrinks unevenly, causing depressions on the surface of the part.
Other defects include warping, flash, and short shots.
Design considerations such as wall thickness, draft angles, and gate location can affect the quality of the final part.

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