| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for fitting a zipper segment composed of two profile materials which are different in length and bonded together in both end parts in the crossing direction to a bag-film web. SOLUTION: When a bag is formed, the longer profile material is fitted to the bag-film web, and the shorter profile material is fitted only by the engagement of profile material mutually fitting members and both-end sealing. The shorter profile material which can not be fitted directly to the bag-film web, as a result of tension applied to the shorter profile material by the longer profile material, is kept close to the bag-film web. |
