| 摘要 |
Protection bags made of a film bearing any design are continuously produced at high speeds by using a film tube blank (9), inserting a floating separator (20) in the film tube blank, forming openings with symmetrical or asymmetrical continuous or discrete cut lines in the upper and lower surfaces or in both side surfaces in a state where motion of the film tube blank is stopped depending upon the length of the bag, and cutting the film tube blank at the melt-adhered portion using a cutting edge (25) extending in the direction of width. <IMAGE> |
