Self-adhesive stamp construction

Abstract

A stamp product is described which is self-adhesive and adheres to a release liner. The product is imprinted with stamp graphics and perforated about the periphery of the graphics and through the liner to define each stamp. The liner is cut opposite each stamp making each stamp accessible by tearing both liner and stamp at the perforations or by removal of the liner at each stamp and then tearing the stamp at the perforations.

What is claimed is:  
     
         1 . A stamp product comprising a laminate upon which an array of N×M stamp graphics have been imprinted, said laminate being comprised of an upper sheet of paper, an intermediate layer of pressure sensitive adhesive, and a lower release liner and perforations extending through the laminate about the periphery of each stamp graphic, with a cut pattern through the liner adjacent each stamp.  
     
     
         2 . The product of  claim 1  wherein the pressure sensitive adhesive is not activated by the perforation process.  
     
     
         3 . The product of  claim 1  wherein the pressure sensitive adhesive is ooze resistant.  
     
     
         4 . The product of  claim 1  including an undercoat and overcoat on said laminate.  
     
     
         5 . The product of  claim 1  including a water soluble primer on the underside of the paper.  
     
     
         6 . The product of  claim 1  wherein the adhesive is an ooze resistant adhesive comprising an acrylic emulsion polymer.  
     
     
         7 . A stamp product comprising a laminate upon which an array of stamp graphics have been imprinted, said laminate being comprised of a face sheet of paper, an intermediate layer of pressure sensitive adhesive, and a lower release liner with clean perforations extending through the laminate about the border of each stamp graphic, with a die cut pattern through the liner adjacent the border of each stamp.  
     
     
         8 . The product of  claim 7  wherein the pressure sensitive adhesive consists of an acrylic-based emulsion having a release characteristic of at least 50 grams per square inch.  
     
     
         9 . The product of  claim 7  wherein the pressure sensitive adhesive is ooze resistant.  
     
     
         10 . The product of  claim 7  including a water soluble primer on the underside of the paper.  
     
     
         11 . A stamp product comprising a laminate comprised of a face sheet of paper, an intermediate layer of pressure-sensitive adhesive and a release liner, stamp graphics on the face sheet and perforations extending through the laminate about the border of the graphics, and wherein the adhesive has a release characteristic between about 50 grams per square inch and 200 grams per square inch.