| 摘要 |
The process according to the invention is noteworthy fundamentally because it consists in continuously producing a complex formed by two strips of film (respectively a lower strip f1 and an upper strip f2, which are stuck to one another by means of a coating of adhesive A and between which there are slightly-adherent protective sheets p which are narrower and arranged in unitary elements, and then in sectioning or perforating the final complex strip thereby obtained transversely, close to one of the edges of each protective sheet p, in such a manner that each bag thus manufactured has an open side and, on the edge opposite the latter, a small residual strip p'" of protective strip arranged between the lower f1 and upper f2 films. The invention also relates to the bags thus produced. <IMAGE> |
