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Title:
PACKAGING BAG
Document Type and Number:
Japanese Patent JP3703676
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a packaging bag to be simply torn off and unsealed by hands although it is formed of a tough laminated film.
SOLUTION: The packaging bag is formed of a rectangular laminated film of loop stiffness in the range of 0.1-0.2 N(Newton), and provided with a heat bonded hutt seam 2 formed of both end edges of the laminated film so bonded together as to face the inner faces each other and end edge heat bonded sections 3a and 3b for bonding both end edges of the heat bonding hutt seam 2 bonded each other in the state of forming a folding-in section 6 folded inwardly on both end edges in parallel with the heat bonded hutt seam. An inner face layer is the layer absorbing laser, and the inner face layer is provided with cuts 5b and 5c extended into V-shaped from a notch 4 formed by the laser on the heat bonded hutt seam 2 close to one of the end edge bonded sections 3a and 3b in the direction of the end edge heat bonded sections 3a and 3b. As the cuts 5b and 5c are not visible from the surface of the packaging bag, the packaging bag can be simply torn off and unsealed by hands from a notch 5a of the heat bonded hutt seam 2 along the cuts 5b and 5c without spoiling the outer appearance.


Inventors:
Takamatsu
Naoki Hosoi
Application Number:
JP2000049394A
Publication Date:
October 05, 2005
Filing Date:
February 25, 2000
Export Citation:
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Assignee:
ITO EN Co., Ltd.
Dai Nippon Printing Co.,Ltd.
International Classes:
B32B15/08; B65D33/00; B65D33/38; B65D65/40; B65D77/38; B65D81/24; B65D85/50; (IPC1-7): B65D33/38; B32B15/08; B65D33/00; B65D65/40; B65D77/38; B65D81/24; B65D85/50
Domestic Patent References:
JP329777A
JP752959A
JP2003516278A
JP10296887A
Attorney, Agent or Firm:
Ikuo Doi



 
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