Substrate for core and tubewinding

Abstract

An apparatus and method for manufacturing a core or tube. The apparatus comprises a source of radiant energy and the adhesive used in the core or tubewinding process comprises an energy absorbing ingredient.

1 . A method for preparing a paper or paperboard core or tube comprising bonding together one or more plies of paper or paperboard material with an adhesive comprising an energy absorbing ingredient.  
     
     
         2 . The method of  claim 1  comprising applying the adhesive to at least one surface of at least one ply, exposing the applied adhesive to a source of radiant energy, bringing the adhesive present on said at least one surface of said one ply together with at least one surface of a second ply whereby said surface of said at least one ply is bonded to said surface of said second ply.  
     
     
         3 . The method of  claim 1  wherein the adhesive is a waterborne adhesive.  
     
     
         4 . The method of  claim 2  wherein the energy absorbing ingredient is a pigment or dye  
     
     
         5 . The method of  claim 4  wherein the pigment is carbon black.  
     
     
         6 . The method of  claim 4  wherein the pigment or dye absorbs near infrared energy.  
     
     
         7 . The method of  claim 1  wherein the core or tube is a single ply core or tube.  
     
     
         8 . The method of  claim 1  wherein the core or tube is a multi-ply core or tube.  
     
     
         9 . The method of  claim 8  wherein the multi-ply core or tube is a 2-ply core or tube.  
     
     
         10 . The method of  claim 2  wherein the adhesive is exposed to a non-coherent NIR energy sorce.  
     
     
         11 . The method of  claim 2  wherein the adhesive is exposed to a coherent NIR energy sorce.  
     
     
         12 . A core or tube prepared by the method of  claim 1 .  
     
     
         13 . The core or tube of  claim 12  which is a multi-ply core or tube.  
     
     
         14 . The tube of  claim 12  which is a food container.  
     
     
         15 . The core or tube of  claim 12  wherein the core or tube is a consumer core or tube.  
     
     
         16 . The core or tube of claim of  claim 12  wherein the core or tube is an industrial core or tube.  
     
     
         17 . The core or tube of  claim 12  wherein the core or tube is used in the tissue, towel, carpet, textile, plastic film, paper, food or industrial storage industry.  
     
     
         18 . The tube of  claim 17  which is a concrete column forming tube.  
     
     
         19 . The tube of  claim 12  wherein the concrete column forming tube comprises from about 10 to about 30 plies.  
     
     
         20 . An apparatus for manufacturing a core or tube comprising a means for providing radiant energy to a predetermined location of at least one ply.  
     
     
         21 . The apparatus of  claim 21  wherein said means is a non-coherent radiant energy source.  
     
     
         22 . The apparatus of  claim 20  for manufacturing a single ply core or tube.  
     
     
         23 . The apparatus of  claim 20  for manufacturing a multi-ply core or tube.