Method for imparting elasticity to a non-woven material / elastomer laminate

摘要

Method for imparting elasticity to a laminate comprising at least one elastic film having a width and at least one ply of non-woven material secured to the film, particularly through interposition of a bonding material, particularly glue, which comprises the following steps in which:;the laminate is unrolled in the form of a web in order to pass it between two sets of toothing, of which the teeth engage in each other in a direction perpendicular to the plane of the laminate in order to thus stretch the laminate in the direction of its width, characterised in that:;a tension is imparted to the web in the longitudinal direction or machine direction during its unrolling between the toothing, particularly by providing a tensioner roll, particularly downstream of the sets of toothing.

主权项

1. A laminate having a laminate length in a longitudinal direction (MD) and a laminate width in a transverse direction (CD), said laminate comprising at least one ply of non-woven material and at least one elastic film secured on said at least one ply of non-woven material, said laminate having been activated so as to have an elasticity in at least one activated region having an activated region width in the CD direction extending between a left edge and a right edge, wherein along said activated region width in the CD direction, said elasticity increases along a left section of the activated region width starting from a left point a distance of 2.5 mm from the left edge and decreasing along a right section of the activated region width ending at a right point a distance of 2.5 mm from the right edge.