Method of manufacturing adhesive articles

摘要

The present application is directed to a method of manufacturing an adhesive article. The method comprises providing a first extrudable feedstock comprising a pressure sensitive adhesive and providing a second extrudable feedstock comprising a polyolefin polymer having a density of no greater than 0.91 g/cc. The first extrudable feedstock and the second extrudable feedstock are coextruded in contact with each other to form a coextruded film. The method also comprises cooling the coextruded film.

主权项

1. A method of manufacturing an adhesive article comprising:
providing a first extrudable feedstock comprising a pressure sensitive adhesive or a tackified pressure sensitive adhesive, wherein the pressure sensitive adhesive or tackified pressure sensitive adhesive is an acrylic adhesive; providing a second extrudable feedstock consisting essentially of a polyolefin polymer having a density of no greater than 0.91 g/cc or a polvolefin polymer having a density of no greater than 0.91 g/cc additionally blended with other polymers; coextruding the first extrudable feedstock in contact with the second extrudable feedstock to form a coextruded film including an adhesive layer including the first extrudable feedstock and a release layer including the second extrudable feedstock, wherein coextruding comprises processing the feedstocks at or above their melt temperature; and cooling the coextruded film; wherein the pressure sensitive adhesive or tackified pressure sensitive adhesive includes between 0.5 wt % and about 10 wt % acrylic acid monomer.