| 摘要 |
PROBLEM TO BE SOLVED: To obtain an easily openable package with a sack filling machine.SOLUTION: A perforation is continuously formed in a film conveying direction in a film conveying step until the film F is formed cylindrically by drawing out the film F from a film feeding source 30. A longitudinal sealing is performed to form a two-line sealed portion by nipping a perforated forming position at an overlapping portion 14 of the film F. Two cut-outs are formed by spaced out at a predetermined distance to traverse an outer sealed portion formed in the overlapping portion 14. The overlapping portion 14 is overturned to be along an external surface of the cylindrical film F by allowing the film F on the side where the perforation is formed to be inside in the process where the cylindrical film F is conveyed downstream. A horizontal sealing is performed ahead and behind an article on the cylindrical film F, thereby obtaining a package 10. |
