| 摘要 |
PURPOSE:To provide an economical sealing method for paper packaging bags, by which a content does not absorb moisture even under a long period of storage. CONSTITUTION:For the title sealing method, after a content is put in a paper packaging bag, the opening of the paper packaging bag is sealed by sewing by a sewing machine. In this case, a sealing agent 17, which coagulates under a normal temperature, is applied on a sewing thread 6 for a sewing machine 1 under a molten condition, to sew an opening 26. The sealing agent 17, which is applied on the sewing thread 6 for the sewing machine 1 under a molten condition, closes the perforation under a coagulated condition, and prevents the content from absorbing moisture. |
