THE EFFECT OF MOLDING CONDITION ON INTERFACIAL MECHANICAL AND MORPHOLOGICAL PROPERTIES OF FILM INSERT INJECTION MOLDED PP-FILM/PP MATRIX

摘要

The effects of barrel temperature and injection rate on the interfacial mechanical and morphological properties of film-insert injection-molded PP-film/PP matrix were investigated. In high barrel temperature and injection rate, film did not peel from the injected PP. In this situation, the surface of the film was found to have melted by the heat of injected PP, which resulted in higher crystallinity of PP film near the interface. On the other hand, in low barrel temperature and injection rate, the film peeled from the substrate. In this situation, crystallinity of the surface of the film was found to be low because the heat of the injected PP did not affect the film.