| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of a plastic gusset bag in which the weight of contents received inside the bag and tension applied to a joint between the inner end of a gusset and a bottom seal can be reduced as much as possible. SOLUTION: The plastic gusset bag is formed with the bottom seal on a lower part of the plastic bag. The bottom seal comprises both side slant seals, a center bottom seal and both side downwardly dented seals. Lower parts of the dented seals intersect with the inner ends of the gussets, and an auxiliary seal is separately and adjacently formed on the lower side of the bottom seal. COPYRIGHT: (C)2004,JPO
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