| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging bag occupying a less space preventing the bag from expanding when a content does not fill it, capable of packaging a sufficient amount of filling content when the content contains a great amount of solid content, and capable of re-sealing of content with a zipper. SOLUTION: The packaging bag having a pair of opposite main surfaces includes at least one folded portion on one of the main surfaces. Both ends of a crest of the folded portion is located in a seal portion. A sheet constituting the main surface includes a base layer and a melt-adhesivable layer. The sheet has an exposed portion which is an end portion of the folded portion, to expose the melt-adhesivable layer in the opposing area of the base layers. COPYRIGHT: (C)2009,JPO&INPIT
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