Patent ID: 6280557
Filing Date: 2001-08-28
Classification: C08L,C09J,Y10T

Abstract:
A method of using an acrylic pressure sensitive adhesive, comprising the steps of:(a) adhering the acrylic pressure sensitive adhesive to a surface of a polymeric backing, and(b) adhering the acrylic pressure sensitive adhesive to a low energy surface thereby adhering the backing to the low energy surface, wherein the acrylic pressure sensitive adhesive comprises:a) about 100 parts by weight of an acrylic copolymer, said acrylic copolymer comprising from about 70-98% by weight of one or more monofunctional acrylates having nontertiary alkyl groups with between 1 and 14 carbon atoms and from about 30-2% by weight of a polar monomer;b) about 10-40 parts by weight of a tackifier;c) about 3-10 parts by weight of a plasticizer; andd) optionally, a crosslinker,wherein:(i) the acrylic pressure sensitive adhesive is applied to the backing as a water-based emulsion, and adhering the adhesive to the backing comprises removing the water from the emulsion prior to adhering the adhesive to a low energy surface;(ii) the acrylic pressure sensitive adhesive is applied to the backing as a solvent-based solution, and adhering the adhesive to the backing comprises removing the solvent from the solution prior to adhering the adhesive to a low energy surface;(iii) the acrylic pressure sensitive adhesive is applied to the backing as a UV or thermally curable syrup, and adhering the adhesive to the backing comprises curing the syrup prior to adhering the adhesive to a low energy surface; or(iv) the acrylic pressure sensitive adhesive is applied to the backing as a melt, and adhering the adhesive to the backing comprises allowing the melt to cool and solidify prior to adhering the adhesive to a low energy surface.