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Title:
METHOD FOR MANUFACTURING RECTANGULAR-BOTTOMED PACKAGING BAG, DEVICE FOR MANUFACTURING RECTANGULAR-BOTTOMED PACKAGING BAG, METHOD FOR MANUFACTURING PACKAGING BODY, AND DEVICE FOR MANUFACTURING PACKAGING BODY
Document Type and Number:
WIPO Patent Application WO/2021/193759
Kind Code:
A1
Abstract:
A method for manufacturing a rectangular-bottomed packaging bag has: an expansion step in which a pair of opening/closing plates (13) inserted into a flat bag are caused to separate from each other along the thickness direction of the flat bag, thereby expanding the flat bag; and a gusset formation step in which, after the expansion step, folding plates (11, 12) are thrust between the pair of opening/closing plates (13) from the exterior of the bag toward the interior of the bag, thereby forming a side-part gusset and a bottom gusset.

Inventors:
UMENAKA KAZUHIRO (JP)
KUGE RAIZO (JP)
OGURA SHOJI (JP)
Application Number:
PCT/JP2021/012373
Publication Date:
September 30, 2021
Filing Date:
March 24, 2021
Export Citation:
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Assignee:
HOSOKAWA YOKO KK (JP)
OGURAKOGYO CORP (JP)
International Classes:
B31B70/00; B31B70/10; B31B70/20; B31B70/64; B31B160/20
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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