| 摘要 |
PROBLEM TO BE SOLVED: To provide a gusset packaging bag having both the takeout property of its content and the resealability after the bag is unsealed, easy in tamper-proofing, and having the beautiful appearance of an opening after the bag is opened.SOLUTION: The gusset packaging bag 100 includes a gusset bag body 2 provided with a first front face 21, a second front face 22 forming a pair with the first front face 21, and a pair of side face fold-in parts 23, 24 which can be folded inside the front face parts 21, 22, and having a bottom 25 and an opening 26; and a sealing tape 1 used for sealing the gusset bag body 2. The sealing tape 1 includes an adhesive layer, and first and second polyolefin layers layered at both sides of the adhesive layer. The sealing tape 1 is welded to the opening 26 of the gusset bag body 2 while a part in a vicinity of a ridge between one side face fold-in part 23 and the first front face part 21 forms a starting point, and a part in a vicinity of a ridge between the other side face fold-in part 24 and the first front face part 21 forms an ending point across the side face fold-in part 23 and via the second front face part 22. |
