| 摘要 |
PROBLEM TO BE SOLVED: To provide an easily openable notch shape which does not hurt the finger, etc. in handling and which is applicalbe to a manufacturing method often used in forming a notch for easily opening a bag shaped container made of a plastic laminate film or an aluminum laminate film. SOLUTION: The entire shape of a notch formed on the heat seal part of a bag shaped container is roughly arrow shaped. An I-shaped notch cut line corresponds to the shaft part of an arrow, and a cut line corresponding to an arrowhead is formed a little apart from the penetralia of the cut line corresponding to the shaft part. COPYRIGHT: (C)2004,JPO
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