| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a packaging bag which includes a sealant layer containing a foam layer, and can stably exhibit necessary seal strength.SOLUTION: A packaging bag (1) is produced by making sealant layers (5) of two laminates (2, 3) each having a base material layer (4) and a sealant layer (5) face each other, and heat-sealing the peripheral edge. The sealant layer of one laminate (3) contains a foam layer (6), and the sealant layer of the other laminate (2) does not contain the foam layer.</p> |
