Defects and Solution of Plastic Parts during Injection Moulding

Plastic injection moulding is the biggest part of the business in the world. In the injection moulding largely used polymer processing method due to the more production and low cost of the product. It is much difficult to set excellent process parameter which may causes defects in the product or components such as shrinkage, burn mark, pin mark, flash, warpage and also causes many defects .This paper is on the literature review and study of defects occurs in the plastic injection moulding. There are many reasons to reducing defects in the product. Such problem arises when injection mould is not design properly. This research used the experimental design of Taguchi method to determine the injection moulding conditions, and the injection processes were simulated using the commercial software C-MOLDTM. Both moulding process conditions and factors were discussed regarding the degree of warpage of a thin shell part.