Difference in Internal Structure of Products Obtained in Injection Molding and Injection Compression Molding

Injection compression molding is an effective process to solve molding defects such as sinking, warpage, and so on. However there are very few research reports on injection compression molding. In this process, the internal structure of products is very important. In this study, the difference in the morphology between normal injection molding and injection press molding, which is a kind of injection compression molding, was examined using PC/ABS. There are different internal structures observed in skin and core in normal injection molding, whereas in injection press molding the internal structure of both layers is almost the same.