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Title:
PACKAGING BAG
Document Type and Number:
WIPO Patent Application WO/2021/038890
Kind Code:
A1
Abstract:
Provided is a packaging bag capable of suppressing peeling at a sealing portion.　According to the present invention, the packaging bag configured by welding a film at a sealing portion includes a steam venting sealing portion that forms a steam flow path as the internal pressure rises, the film includes polypropylene layers, and the polypropylene layers are welded together in the sealing portion.

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Inventors:
YAMAUCHI YOSHIO (JP)
Application Number:
PCT/JP2019/041766
Publication Date:
March 04, 2021
Filing Date:
October 24, 2019
Export Citation:
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Assignee:
KYORAKU CO LTD (JP)
International Classes:
B65D81/34
Foreign References:
JP2002080072A2002-03-19
JP2004284604A2004-10-14
JP2003182780A2003-07-03
JP3222481U2019-08-01
JP2000025850A2000-01-25
US20110248036A12011-10-13
US20070212454A12007-09-13
Attorney, Agent or Firm:
SK INTELLECTUAL PROPERTY LAW FIRM et al. (JP)
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