Abstract:
The invention provides a method for making a hollow doll's head (10) by injection molding a thermoplastic elastomer around a removable mold core (26). The major dimension of the mold core (26) is larger than the opening in the doll's head (10) through which the core (26) is to be removed after the injection molding is complete. For large mold cores and relatively small openings, the invention provides a multiple piece core section which is designed to be removed piece by piece through the opening in the doll's head (10) and then reassembled for reuse.
Abstract:
Insert molding method and a new and useful collapsible insert molding pin assembly. A molding insert (30) is provided with a plurality of collapsible pin assemblies (56) each including a hollow, cylindrical boss (58), a piston (60), a valve (62) and a pin (64).