| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging bag made tearable without being deviated from a cutting line by contriving a shape and combination of the cutting lines formed in the front and back of the packaging bag.SOLUTION: A packaging bag has left and right side end edge thermobonding parts on opposite end edges and includes laminates having outer layers, intermediate layers and inner layers. A first continuous cutting line which is the same in a vertical position parallel with the left and right side end edge thermobonding parts and has a starting point and a terminal point on an outer edge of either the left or the right, a second continuous cutting line which is the same in the vertical position parallel with the left and right side end edge thermobonding parts and has the starting point and the terminal point on the outer edge of either the left or the right is formed in the other outer layer differently from the first cutting line in a formation position when viewed in a plane, and when torn and opened from the first cutting line and the second cutting line in a crosswise direction, a step is created on a torn opening. |
