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Thermoplastic products are produced using a variety of methods. Each has it has the comparative advantage(s) determined by specific design conditions and limitations. Normally part design, size, and shape determine the most beneficial process. The part’s characteristics may suggest that more than available process may work. Since product development differs dependant on the process, the designer(s) must anticipate early in the product development action which process to work with.

Injection molding - essentially the most common processing method for Bayer thermoplastics - includes forcing molten plastic molds, under underhand, into mildew. Conforming to the internal shape of the mold that plastic cools in addition to solidifies. As any quick-cycle process, treatment molding can manufacture large quantities regarding product. Part size is limited only by mold size. Injection molding offers excellent part-to-part repeatability, by using relatively tight dimensional tolerances. Involved features and textures tend to be possible, as are structural in addition to assembly elements for example ribs and bosses. Undercuts and threads usually necessitate mildew mechanisms that raise the tooling cost.

Treatment molding is financially advantageous for size production, as the higher mold cost is actually amortized across a top number of segments. For example, making 1, 000 parts utilizing a $50, 000 molds would cost $50 per part for any mold alone. If the same mold produced 500, 000 segments, it would expense only $0.10 per part. Moreover, mold modifications with regard to product design changes might be very expensive. Large parts, such since automotive bumpers in addition to fenders, require substantial and expensive molds in addition to presses.