| 摘要 |
PROBLEM TO BE SOLVED: To obtain a pillow type packaging bag which has a back seal section formed by sticking together side edges by joining their faces, in which a means for making it easy to open the bag is formed without communicating with the inside of the bag. SOLUTION: A tubular body with the back seal section 3 is formed by heat-sealing and sticking together both the side edges of a heat-sealable bag material into the principal rafter shape. An opening C<SB>B</SB>in its one end is closed by forming an end edge seal 5 and the pillow type bag is thus formed. A corner seal 6 is formed on the side of the bag in the vicinity of at least one end edge seal 5' closing the other opening C<SB>A</SB>after the insertion of contents into the bag. A cut 7 is made in the edge of the corner seal 6 from which the bag is allowed to be torn. Thus, the easy-to-open packaging bag is obtained. COPYRIGHT: (C)2005,JPO&NCIPI
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