| 摘要 |
PROBLEM TO BE SOLVED: To provide a zippered pillow packing bag having a direct-advance cutting property.SOLUTION: When a zipper tape 2 is heat-sealed on a bag 20, a band-shaped seal portion 4 and an unsealed portion 5 are alternately formed in that heat-sealed region. A cut line P is set in the unsealed portion 5, and the sealed portion 5 and the unsealed portion are pushed in a wave shape. Moreover, the body film of the bag 20 is extended in the direction of the cut line P, or perforations or slits are formed to improve the linearity of the cut line P formed by the unsealed portion 5. The wave-shaped push is formed in the seal portion 4 and the unsealed portion 5 so that the push can be caught by the finger tip at the reopening time to facilitate grip and reopening. |
