Trim and core thereof, and method and apparatus for manufacturing trim and core

摘要

Core (16) in weatherstrip (13) is obtained by linking multiple core pieces (22) at given intervals to provide separation spaces (24) between individual core pieces (22). The interior of the separation spaces (24) is filled with filler polymer material (P2) having a thickness substantially equal to that of the core pieces (22). The whole surface of the core (16) is coated with the filler polymer material (P2). Accordingly, the thicknesses of trim polymer material (P1) at the area covering the core pieces (22) and at the area covering the separation spaces (24) are made substantially identical with each other, thereby attaining substantially zeroing of the variation of molding shrinkage along the thickness direction of the trim polymer material (P1).