Title: Evaluation on Weld-line in Articles Molded by injection compression molding
Abstract: Injection compression molding is an effective method to solve various molding defects . In particular, it is said that it is effective both for the improvement of the transcript of molded articles and for the decrease of weld-line. However very few studies on injection compression molding are reported, in particular, on qualitative weld-line examination. In this study, the effectiveness in the decrease of weld-line was compared between injection molding and injection press molding (one kind of technique of injection compression molding) using PC/ABS. The ditch depth of weld-line was deeper in case of injection molding, whereas it was shallower in injection press molding.