Title:
PACKAGING BAG
Document Type and Number:
Japanese Patent JP3909355
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a packaging bag having sealed parts prevented from being separated and capable of being opened stably without increasing the adhesive strength on both side ends of its bag body.
SOLUTION: This packaging bag comprises the bag body 2 and a seal opening part 3. The seal opening part 3 is formed by bonding a pair of opening forming sheets 2e, 2f at the tip end edges and the side end edges with each other so that a communicating space communicating with the inside of the bag body 2 is formed between the tip end edges and the sheet like member 2c of the bag body 2. The end edges of the sheets 2e, 2f are bonded with a bonding strength smaller than the bonding strength of the outer circumferences of the sheets 2e, 2f of the bag body 2 with each other. The bonding part bonding the end edges of the sheets 2e, 2f is formed so that the width becomes narrower toward the center part from the side end edge.
Inventors:
Shimizu Shigeyoshi
Kumori
Masato Iwasaki
Kumori
Masato Iwasaki
Application Number:
JP2005030055A
Publication Date:
April 25, 2007
Filing Date:
February 07, 2005
Export Citation:
Assignee:
West Japan Pack Co., Ltd.
International Classes:
B65D81/34; B65D33/01
Domestic Patent References:
| JP2002137313A | ||||
| JP2003002374A | ||||
| JP2003012033A | ||||
| JP2002308348A | ||||
| JP9142541A | ||||
| JP11020805A | ||||
| JP2003205978A |
Attorney, Agent or Firm:
Yasunobu Yamauchi
Hiroshi Nakai
Hiroshi Nakai