Patent ID: 8562783
Filing Date: 2013-10-22
Classification: B32B,D04H

Abstract:
1. In a process for the production of an elastic laminate material web, comprising the following steps: processing a carrier film made of a thermoplastic elastomer from a film roll; laminating a cover material on at least one side of the carrier film using a hot melt glue which is applied to the carrier film at a glue temperature; wherein the carrier film is a mono-film produced by extrusion from a polymer selected from the group consisting of styrene-isoprene-styrene block copolymer, styrene-butadiene-styrene block copolymer, styrene ethylene/butylene block copolymer, polyurethanes and ethylene copolymers, wherein the improvement comprises: applying a polymer powder directly to a surface of the carrier film on at least one side of the carrier film prior to the carrier film being rolled to prevent the carrier film from sticking to itself in the film roll, wherein the material in said film roll consists of said carrier film provided as a mono-film and said polymer powder, which acts as a spacer in the storaae of said film roll, and wherein the powder is present on the carrier film at a weight per area of less than or equal to 1 g/m wherein the powder consists of a polyethylene or ethylene vinyl acetate having a melt temperature which is less than the glue temperature of the hot melt glue applied to the carrier film, so that the powder melts and mixes into the hot melt glue during the step of laminating.