COMPRESSION MOLDING DIE FOR PREFORM, METHOD OF MANUFACTURING SYNTHETIC RESIN BLOW-MOLDED CONTAINER, AND PREFORM

摘要

PROBLEM TO BE SOLVED: To reduce or eliminate temperature regulation for a preform when blow-molded.

SOLUTION: A compression molding die for the preform forms a space for compression-molding the preform having a port part, a barrel part and a bottom part for forming a synthetic resin blow-molded container, and includes a female die and a male die, and a space width forming a wall thickness of an at least the barrel part in a portion from the barrel part to the bottom part of the preform is 1.18-2.11 times a space width forming a wall thickness of a port part upper part of the preform, or a space width forming a wall thickness from an under side of a coupler of the port part up to above a neck ring thereof.

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