PACKAGING BAG WITH LIQUID-SPOUTING NOZZLE

WIPO Patent Application WO/2009/139299

A1

A packaging bag having a liquid-spouting nozzle is provided in which the liquid-spouting nozzle is prevented from permanently deforming in the directions in which the contents-spouting passage expands.  The liquid-spouting nozzle prevents outside air from coming into the packaging-bag main body, and can sufficiently perform a self-sealing/check function when contents spouting is stopped.  This packaging bag is obtained in the following manner.  A laminated film comprising a base film layer and, laminated to this base film layer respectively on both sides, a high-melting sealant layer and a low-melting sealant layer is fusion-bonded to itself in an area along the periphery excluding a base end side thereof so that the high-melting sealant layer faces itself, whereby a liquid-spouting nozzle is constituted.  This liquid-spouting nozzle is fusion-bonded at the base end part thereof to a flexible packaging-bag main body so that the nozzle protrudes from a side part of the main body, by fusing the low-melting sealant layer serving as the outer surface of the nozzle to a sealant layer serving as the inner surface of the flexible packaging-bag main body.  On the other hand, at the base end part of the liquid-spouting nozzle, the high-melting sealant layer is temporarily fusion-bonded to itself to form a temporary fusion-bonded part.

JP4906087	Packaging bag
JP6408330	Packaging bag

FUTASE KATSUNORI (JP)

PCT/JP2009/058424

November 19, 2009

April 22, 2009

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YUSHIN CO LTD (JP)
FUTASE KATSUNORI (JP)

B65D33/38; B65D30/02

JP2005059958A	2005-03-10
JPH05294350A	1993-11-09
JP2004238004A	2004-08-26
JP2007326581A	2007-12-20
JP2843100B2	1999-01-06
JP2005015029A	2005-01-20
JP2005059958A	2005-03-10

See also references of EP 2289814A4

OGAWA, Junzo et al. (8-9,Ginza 2-chome, Chuo-k, Tokyo 61, JP)

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