公开(公告)号：EP3366655A1

公开(公告)日：2018-08-29

申请号：EP17800696.1

申请日：2017-02-13

申请人： Koa Glass Co. Ltd.

发明人： SASAKI Yuya ,  ARAI Kenjirou ,  EMORI, Kenji

IPC分类号： C03B9/31 ,  C03B9/335

摘要： There is provided a method of manufacturing a glass container that can manufacture a glass container, which includes a bubble formed in a bottom portion and independent of the outside, with high yield by accurately controlling the position and size of the bubble.
A method of manufacturing a glass container that includes a mouth portion, a body portion, and a bottom portion, includes: a step of molding a glass container, in which a bubble is not yet formed, from molten glass; a step of forming a bubble-forming passage by pulling out a needle-like member after inserting the needle-like member into a bottom portion of the glass container in which a bubble is not yet formed; a step of injecting air from an inlet of the bubble-forming passage to form a reverse teardrop-shaped internal space, which is widened in the bottom portion from the bubble-forming passage as a starting point, in the bottom portion of the glass container in which a bubble is not yet formed, and to obtain a glass container that includes an internal space communicating with the outside; and a step of closing an inlet side of the reverse teardrop-shaped internal space by flow of not yet cured glass, which is caused by the potential heat of the not yet cured glass, to obtain a glass container that includes a bubble formed in the bottom portion and independent of the outside.

公开(公告)号：EP3366655B1

公开(公告)日：2020-07-22

申请号：EP17800696.1

申请日：2017-02-13

申请人： Koa Glass Co., Ltd.

发明人： SASAKI, Yuya ,  ARAI, Kenjirou ,  EMORI, Kenji

IPC分类号： C03B9/31 ,  C03B9/335 ,  C03B9/14 ,  C03B9/16 ,  B65D85/48 ,  B65D1/02 ,  B65D1/40