Dissolvable adhesive article

Abstract

A linerless dissolvable pressure sensitive adhesive article is provided. The adhesive article comprises: a dissolvable facestock; a dissolvable adhesive layer; and a release coating overlying the upper surface of the dissolvable facestock. The linerless dissolvable adhesive article may be provided in a wound configuration or a stacked configuration.

1 . A method for producing a linerless dissolvable adhesive article comprising the steps of: 
 applying a dissolvable pressure sensitive adhesive to a release liner having a release surface to form an adhesive layer releasably adhered to the release surface of the release liner;    applying a dissolvable facestock to the adhesive layer;    applying a release material to the dissolvable facestock to form a release layer on the dissolvable facestock;    removing the release liner from the dissolvable pressure sensitive adhesive to form a multilayer structure comprising a dissolvable facestock having an upper and lower surface, a release layer on the upper surface of the facestock and a dissolvable adhesive layer adhered to the lower surface of the facestock; and    winding the multilayer structure into a roll.    
     
     
         2 . The method of  claim 1  wherein the facestock comprises a dissolvable paper.  
     
     
         3 . The method of  claim 1  wherein the facestock comprises a dissolvable polymeric film.  
     
     
         4 . The method of  claim 1  wherein the release coating comprises a silicone emulsion release material.  
     
     
         5 . The method of  claim 1  wherein the dissolvable adhesive layer comprises an emulsion acrylic adhesive.  
     
     
         6 . The method of  claim 4  wherein the silicone emulsion release material comprises an emulsion of polyvinyl siloxane that is catalyzed on blending with a platinum catalyst.  
     
     
         7 . The method of  claim 5  wherein the emulsion acrylic adhesive comprises a copolymer formed from a plurality of monomers comprising: 
 (a) at least one alkyl (meth)acrylate;  
 (b) at least one N-vinyl lactam monomer; and  
 (c) at least one hydroxy (meth)acrylate ester;  
 wherein the copolymer has a weight average molecular weight less than about 120,000.