Patent ID: 6974514
Filing Date: 2005-12-13
Classification: B29C,B29L,B32B,D04H

Abstract:
1. A method for producing an air-permeable laminate film with a textile surface and elastic and non-elastic regions, comprising the steps of: (a) introducing as an elastic insert at least one film strip having a width and being elastic in a crosswise direction between two webs of non-woven material having a web width greater than the width of the film strip; (b) connecting segments of the webs of non-woven material in direct contact next to the insert with each other to form a laminate having non-elastic regions; and (c) subsequently passing the laminate through an ultrasound bonding station wherein the elastic insert is melted to form point-shaped bonds connecting the insert with the webs of non-woven material at discrete locations and form air-permeable structures without damaging the non-woven material.