Plastic Injection Molding
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Scripted by plastics industry expert, Irvin I. Rubin. Injection molding is the most common method of producing parts out of plastic material. Using shop floor footage and animated sequences this program focuses on the injection molding machine and the injection mold to illustrate the injection molding process. The injection machine section covers in detail both the injection system and the clamping system. In step by step progression, plastic material is followed from its raw material state through the melting process and onto it's injection into the mold. Throughout the sequence, various components of the injection machine are explained. The mold section continues this examination, allowing clear definition of mold terms as the molten material is formed, cooled, and ejected as the final part. Also featured in the mold segment are the common mold types, including the two-plate cold runner mold, three-plate cold runner mold, the hot runner mold, and the insulated runner mold. This program concludes with a section on injection machine controls.