Adhesive application with intermittent dead zones

Abstract

A machine is provided to create a strip of selectively pressure-sensitive adhesive material. A first roller unwinds a backing and a roller dispenses a series of separated areas of inhibited adhesive material. A second roller applies a continuous layer of adhesive material over the inhibited adhesive material and backing A facing is applied over the continuous layer of adhesive material. The machine then winds the finished material. A removable backing is coated with non-sticky material and then covered by a continuous sticky layer of material. A face stock material is then applied over the continuous sticky layer.

What is claimed is: 
     
         1 . A method for applying a selective pressure-sensitive adhesive backed label, said method comprising the steps:
 providing a release paper having a release surface;   applying deadening agent to form an island on said release surface, said island having lateral edge boundaries and said release surface adjacent to said lateral edge boundaries remaining and exposing portions of said release surface;   applying a continuous adhesive layer over said island and said exposed release surface;   curing said island and said continuous adhesive layer; and   applying a layer of face stock over said continuous adhesive layer;   
     
     
         2 . The method of  claim 1 , including a plurality of islands, said islands being spaced from each other so that said release surface is exposed between said lateral edge boundaries of adjacent islands, and applying said continuous layer of adhesive over said islands and said exposed release surface between said islands. 
     
     
         3 . An intermittent dead zone pressure-sensitive adhesive label, said label having:
 a backing material having a release surface;   a plurality of kill islands of deadening agent directly contacting and overlying said release surface of said backing material and forming a killed surface where said deadening agent directly contacts said release surface, adjacent kill islands being spaced from each other leaving a gap of exposed release surface between said islands;   a continuous layer of adhesive overlaying and directly contacting said islands and directly contacting said exposed release surface between said islands to form an adhesive surface where said adhesive directly contacts said release surface, said continuous layer of adhesive having a first thickness where said continuous layer of adhesive overlays and directly contacts said kill islands, and a second thickness where said continuous layer overlays and directly contacts said backing material, said second thickness greater than said first thickness;   a layer of face stock having a print side and an adhesive receiving side, said adhesive receiving side overlaying and directly contacting said continuous layer of adhesive; and   when said backing material is removed from adhesive label, said kill islands and said continuous layer of adhesive remain on said face stock, said adhesive at said adhesive surface having a tacky surface, said kill islands at said killed surface having a non-tacky surface.   
     
     
         4 . The label of  claim 3 , said adhesive being pressure sensitive. 
     
     
         5 . The label of  claim 4 , said backing material being clay-coated kraft paper, said release surface being silicone-based. 
     
     
         6 . The label of  claim 5 , said face stock having a fiducial marking the location of said kill islands. 
     
     
         7 . A machine for making a selective pressure-sensitive adhesive roll, said machine comprising:
 an unroll portion adapted to receive and dispense backing material at a linear speed;   a kill application portion adapted to selectively apply islands of deadening agent, said kill application portion having a kill applicator roller, said kill applicator roller rotatable about a central axis and having a major diameter and a minor diameter, said major diameter separated into segments, said kill applicator roller partially submerged in deadening agent and rotates at a tangential speed matching said linear speed of said backing material, when said backing material passes over said kill applicator roller, said deadening agent dispenses an interrupted series of deadening agent;   an adhesive application portion adapted to apply a continuous adhesive layer, said adhesive application portion having an adhesive roller, said adhesive roller rotatable about a central axis and having a primary diameter, said adhesive roller partially submerged in adhesive and rotates at a tangential speed matching said linear speed of said backing material, when said backing material and said interrupted series of deadening agent passes over said adhesive roller, said adhesive overlays said backing material and said interrupted series of deadening agent in an uninterrupted layer;   an oven adapted to cure said deadening agent and said adhesive on said backing material;   a face stock portion adapted to receive and dispense face stock; and   a pinch portion adapted to press said face stock to said continuous layer of said adhesive.   
     
     
         8 . The machine of  claim 7 , said kill application portion having a doctor blade separated from said major diameter, said adhesive application portion having a doctor blade separated from said primary diameter. 
     
     
         9 . The machine of  claim 8 , said adhesive roller having a series of impressions radially nearer said central axis. 
     
     
         10 . The machine of  claim 7 , and a tensioning device to maintain constant tension in said backing material. 
     
     
         11 . The machine of  claim 10 , and a plurality of idlers.