Process for manufacturing draw blow-molded bottles of saturated polyester

Abstract

Abstract Process for manufacturing draw blow-molded bottles of saturated polyester, which involves the treatment of strengthening the neck of a bottle. In molding according to draw blowing using beads (1), the treatment of strengthening the bottle neck is conducted by effecting injection introduction of saturated polyester into metal mold (2) through inlet (3) provided on the side of bottle neck (1a) as well as through ordinary inlet (4) provided on the bottle bottom side so as to cause the molten material to run along the inside surface of the metal mold, thereby to impart centrifugal force and realize molecular orientation.

Inventors

• 👤 Takeshi Itakura

Bibliographic Details