PACKAGING BAG, PACKAGE UTILIZING SAME, AND MANUFACTURING METHOD FOR PACKAGING BAG

Title:

PACKAGING BAG, PACKAGE UTILIZING SAME, AND MANUFACTURING METHOD FOR PACKAGING BAG

Document Type and Number:

WIPO Patent Application WO/2014/006981

Kind Code:

A1

Abstract:

[Problem] To provide a packaging bag that is capable of effectively preventing a non-return spout nozzle from unintentionally being torn open or permanently deformed, for example, a package that utilizes the packaging bag, and a manufacturing method for the packaging bag. [Solution] This packaging bag comprises a flexible packaging bag body, which is created by means of fusing-bonding of a sealant layer of a packaging film equipped with a base film layer and the sealant layer, and a non-return spout nozzle, which is made of a thin flat laminated film having a sealant layer on both the front and back surfaces thereof and has a self-sealing function, and is constructed by fusion-bonding the base end section of the non-return spout nozzle to inner lateral surfaces of the packaging bag body with the non-return spout nozzle protruded sideways. A protrusion section that completely covers the non-return spout nozzle from the front and the back is provided continuously to the packaging bag body, a tear seam that runs across a middle section of the non-return spout nozzle is provided on the protrusion section, and the packaging bag body is left open either at the top or at the bottom.

Inventors:

FUTASE KATSUNORI (JP)

Application Number:

PCT/JP2013/063527

Publication Date:

January 09, 2014

Filing Date:

May 15, 2013

Export Citation:

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Assignee:

YUSHIN CO LTD (JP)

International Classes:

B65D33/38; B65D30/24

Domestic Patent References:

WO2011016573A1

2011-02-10

Foreign References:

JP2012046212A	2012-03-08
JP2012081983A	2012-04-26
JP2000500721A	2000-01-25
US5378065A	1995-01-03
JP2004338753A	2004-12-02
JP2005015029A	2005-01-20
JP2005059958A	2005-03-10
JP2008055739A	2008-03-13

Other References: