塑料成型
Introduction
Plastic moldings produced by the injection moldingprocess are usually long-lived consumer goods
whose suitability for the purpose in question dependsnot only on the properties of the finished part butalso highly on the surface quality.The complex inter-play among molding and mold design,processingconditions for the raw material and the parametersfor the actual process require a great deal of experi-ence for optimum results especially when focusingon the short-term removal of processing faults.Onthe basis of an individual case a decision has to betaken as to whether simple and rapid fault correction(by modifying the processing parameters for example)is possible or whether intervention in the design ofthe parts or the layout of the mold and gating is nec-essary.
In conclusion the surface faults occurring most com-monly in styrene copolymers are noted and described
and recommendations for their removal are set out.
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