| 摘要 |
A method of automatically forming bags fitted with complementary closure strips secured to distinct support webs and associated with an actuating slide, in which method: at least one film suitable for forming the walls of the bags is supplied continuously; a closure assembly comprising complementary closure strips secured to distinct lateral support webs which extend beyond the closure strips is supplied continuously, the strips being associated with slides for actuating the closure strips, which slides are distributed along the length of the closure assembly as supplied; the closure assembly formed in this way is fixed via the external lateral support webs to the film forming the wall of the bags; the method being characterized in that: a loop is made in the continuously supplied film; and inside the concave portion of the loop the closure assembly is fixed to the surface of the film that corresponds to the outside surface of the bags.
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