Bottle neck structure and manufacturing method therefor.

摘要

A bottle neck structure (1) of a synthetic resin bottle with a preliminarily molded synthetic resin core member (2) embedded therein is disclosed. The bottle neck structure comprises the resin core member (2) which has a cylindrical body (3) constituting the wall of a bottle neck and a flange (7) constituting a support ring of the bottle neck, at least one exposed surface to be in contact with a neck mold when a bottle preform is molded, and a plurality of through-holes (15) formed in the circumferential wall of the cylindrical body.