| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging bag which has a steam release seal part and inhibits peeling from an unintentional portion.SOLUTION: A packaging bag (100) has a steam release seal part (7). In the packaging bag, the peeling strength is the highest in a seal part of a corner part which is formed by connecting a belt-like first seal part (8a) continuing into the steam release seal part (7) with a belt-like second seal part (8b) intersecting with the first seal part (8a). |
