| 摘要 |
The invention concerns a method for automatically producing bags equipped with matching closure profiles (30, 40) integral with separate support webs and associated with an actuating slider (50) which consists in: continuously unwinding a supply of at least a film (110) adapted to form the bag walls, continuously unwinding a supply of closure assembly comprising matching closure profiles integral with the lateral webs (26, 28) of separate supports extending beyond the closure profiles, the profiles being associated with a slider actuating the closure profiles distributed over the length of the unwound closure assembly, fixing the thus formed closure assembly, via external lateral support webs on the film forming the bag wall. The invention is characterised in that it consists in producing a loop in the unwinding film and in fixing the closure assembly in a concave part of the loop on the surface of the loop which corresponds to the outer surface of the bag.
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