| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging bag which is tearable without deviating from cutting lines by devising the shapes and combination of the cutting lines formed on the front and rear surfaces of the packaging bag.SOLUTION: A packaging bag is formed with a laminate body having an outer layer, an intermediate layer and an inner layer with right and left edge heat-bonded portions at the opposing edges. On the one side of the outer layer of the laminate body, first continuous cutting lines, being at the same position in the vertical direction parallel with the left and right edge heat-bonded portions and having a starting point and an ending point on either of the right and left outer edges, are formed. On the other side of the outer layer, second continuous cutting lines, being at the same position in the vertical direction parallel with the left and right edge heat-bonded portions and having a starting point and an ending point on either of the right and left outer edges, are formed at a different formation position in a plane view from the first cutting lines. When the bag is opened by tearing in a horizontal direction at the first cutting lines and the second cutting ines, a level difference is generated at the torn opened portion. |
