| 摘要 |
PROBLEM TO BE SOLVED: To easily take out the contents by widely opening a self-standable packaging bag.SOLUTION: There is provided a packaging bag made of a film which is made self-standable by forming a bottom surface part 2, facing side surface parts 3 and a top surface part 4 by folding a film 1 obtained by laminating a base material layer and a sealant layer, forming a gusset in the bottom surface part 2 and the top surface part 4 and opening the gusset of the bottom surface part, wherein the facing side surface parts 3 and the top surface part 4 are connected sequentially to the bottom surface part 2, gussets 2a, 2b, 4a and 4b of the bottom surface part 2 and the top surface part 4 are formed by a plurality of ruffled foldings, both end parts of the facing side surface parts 3 and the bottom surface part 2 and the top surface part 4 sandwiched therebetween are integrally sealed so as to clip them by a side end seal part 5, and the end edge parts of the top surface part 4 are sealed by a fin seal part 6 to open the top surface according to the cutting of the fin seal part 6. |
