Abstract: Molds for PET decoration film on the out-shell of ABS loud speakers was discussed in this paper. In order to deliver the film automatically, the mold with a flip structure was designed. For avoiding prevent the defects such as ink, gas lines, a submarine plunger gate system was used. The inside and outside gas paths were designed and the film could be well located.

Key words: injection molding, mold-decoration, flip mold, film, plunger gate system