| 摘要 |
PROBLEM TO BE SOLVED: To provide an easily openable packaging bag in which no complicated operation or working is required, the reliability of sealability of the bag is not degraded, and the bag is easily torn and opened by tearing one surface of the bag by finger force while the other surface of the bag mostly remains in the bag. SOLUTION: In the easily openable packaging bag, a film A overlaps a film B, and a peripheral part thereof is heat-sealed. The film A is a laminate film including at least a film of one-way straight cuttability and a thermal-bonding resin film layer. The film B is a laminate film including a film without one-way straight cuttability and a thermal-bonding resin layer. A pinching part of the width of≥5 mm and≤30 mm in the direction substantially orthogonal to a predetermined direction is provided in a peripheral part long in the direction substantially orthogonal to the predetermined direction, the pinching part is connected to the packaging bag at a part of the width smaller than the width of the pinching part, and the part is provided from the pinching part in the direction toward the other peripheral part longer in the direction orthogonal to the predetermined direction. COPYRIGHT: (C)2005,JPO&NCIPI
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