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 method for manufacturing an elastic laminate having a laminate length in a longitudinal direction (MD) and a laminate width in a transverse direction (CD) and comprising at least one elastomeric film and at least one ply of non-woven material, comprising the steps of:
extruding an elastomeric material on a conveying belt so as to form at least one elastomeric film; conveying said at least one elastomeric film through a cooling unit so as to cool said elastomeric material; securing together said at least one elastomeric film with at least one ply of non-woven material; conveying the resulting composite constituted of the at least one elastomeric film and of said at least one ply of non-woven material into an activation unit so as to stretch said composite in said transverse direction CD to impart elasticity thereto and to obtain said elastic laminate.