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1. (WO2017150307) INFLATION FILM MANUFACTURING METHOD AND INFLATION MOLDING APPARATUS

Pub. No.:    WO/2017/150307    International Application No.:    PCT/JP2017/006627
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Thu Feb 23 00:59:59 CET 2017
IPC: B29C 55/28
B29C 47/20
B29C 47/92
Applicants: TBM CO., LTD.
株式会社TBM
Inventors: SUMI, Yuichiro
角 祐一郎
Title: INFLATION FILM MANUFACTURING METHOD AND INFLATION MOLDING APPARATUS
Abstract:
Provided are a new inflation film manufacturing method and an inflation molding apparatus capable of simply adjusting uniformity of film thickness. The inflation film manufacturing method comprises: a bubble forming step of forming a bubble from raw resin; and a step of forming the bubble in a sheet shape to obtain a film, the bubble forming step including an inflation suppressing step in which inflation of the bubble is suppressible by an inflation suppressing mechanism that contacts the bubble from an outside of the bubble to suppress the inflation of the bubble. The inflation molding apparatus comprises: bubble preparation means for preparing a bubble from raw resin; and an inflation suppressing structure capable of suppressing inflation of the bubble by contacting the bubble from an outside of the bubble.