BAG MANUFACTURING MACHINE AND BAG MANUFACTURING METHOD

Title:

BAG MANUFACTURING MACHINE AND BAG MANUFACTURING METHOD

Document Type and Number:

WIPO Patent Application WO/2021/210253

Kind Code:

A1

Abstract:

First and second body materials are overlapped on each other and fed along the length direction thereof. A side gusset material is temporarily joined to the second body material and subsequently divided by a dividing device to form a pair of opening edges. When the first and second body materials are overlapped on each other, the opening edges come into alignment with a fragile line of the first body material. The side gusset material is temporarily sealed to the first and second body materials by a temporary sealing device to form a temporary sealing part. The first body material is guided, divided along the fragile line, and folded at the divided edge. Due to the guiding of the body material and to the temporary sealing part, the side gusset material is opened at the position of the opening edges, and an open surface is formed. An end surface material is then positioned on the body material, and is overlapped on the folded portion of the body material and the open surface of the side gusset material.

Inventors:

OHNISHI YUJI (JP)
NAGASAWA TOSHIKI (JP)

Application Number:

PCT/JP2021/005084

Publication Date:

October 21, 2021

Filing Date:

February 10, 2021

Export Citation:

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Assignee:

TOTANI CORP (JP)

International Classes:

B31B70/18; B31B70/02; B31B155/00; B31B160/20

Domestic Patent References:

WO2016199863A1	2016-12-15
WO2009131214A1	2009-10-29

Foreign References:

JP2015123620A	2015-07-06
JP2010036587A	2010-02-18
JP2018144363A	2018-09-20
JP2016193572A	2016-11-17
JP3655627B2	2005-06-02
JP6381169B2	2018-09-05

Other References: