Injection molding is a closed mold process used predominantly for the production of filled and unfilled thermoplastic resins into finished forms. The materials, usually in pellet form, are melted then injected into the mold, the molded part hardens as it is cooled, and then is ejected from the mold. Injection molding is an automated, high volume process with the capability of making complex parts. Common uses are in automotive under the hood parts, electrical components, power tools, electronic equipment, housings and parts.

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