Patent ID: 9421708
Filing Date: 2016-08-23
CPC Classification: B29C,B29L

Claim Text:
1. A blow molding device, comprising: a metal mold used for blow molding, the metal mold including portions defining a shoulder portion; and a blow nozzle configured to tightly communicate with a mouth tubular portion of a bottomed tubular preform, a liquid as a pressure medium coupled to the blow nozzle so as to be provided into the preform through the blow nozzle, wherein the blow nozzle is provided, at a lower end portion thereof, with an engaging tubular piece configured to be inserted into the mouth tubular portion, and the engaging tubular piece has a length by which a lower end of the engaging tubular piece extends further downward than a neck ring and into a region of the metal mold having the portions defining the shoulder portion in a state where the blow nozzle is in communication with the mouth tubular portion, the neck ring being provided around a lower end of the mouth tubular portion.