| 摘要 |
PROBLEM TO BE SOLVED: To provide a package in which a second sealing jaw part is unnecessary, and the dimension thereof is not changed. SOLUTION: A flexible plastic fitting tool has a discharge port for a porch formed of a seat material. The fitting tool has a pair of side walls facing each other, and each side wall comprises a common cylinder, and has center parts facing each other in the diameter direction, and a straight part integrated with a cylindrical part on both side parts of the cylindrical part. The side walls are joined with each other at both end parts of the side walls to form a canoe- like part. A cover for forming a simple supporting part for the side walls is joined with a side edge part of the top part of the canoe-like part, and expanded between the end parts joined with the cylindrical part at both end parts of the canoed-like part. A thin fin is extended from each end part joined therewith. In a fitting method and a fitting device, the fitting tool is fitted by expanding the side walls outwardly while urging the sheet material against the side walls. |
