Poly-coated roll header for paper roll and method for wrapping a paper roll using the same

Abstract

There is described a paper roll having an end, the poly-coated roll header comprising: a linerboard base having an inner surface; and a coating of a polypropylene mixed with a low density polyethylene applied to at least a portion of the inner surface of the linerboard base, wherein once applied to the end of the paper roll, the poly-coated roll header protects the end of the paper roll against the elements. There is also described a method for wrapping a paper roll having two ends and a length, the method comprising: installing a coated linerboard, previously coated with a polypropylene mixed with a low density polyethylene, at one of the two ends of the paper roll, thereby providing protection against the elements at the one of the two ends of the paper roll.

1 . A poly-coated roll header for a paper roll having an end, the poly-coated roll header comprising:
 a linerboard base having an inner surface; and   a coating of a polypropylene mixed with a low density polyethylene applied to at least a portion of the inner surface of the linerboard base, wherein once applied to the end of the paper roll, the poly-coated roll header protects the end of the paper roll against the elements.   
     
     
         2 . The poly-coated roll header of  claim 1 , wherein the linerboard base defines a disc-like shape and the coating defines a disc-like shape. 
     
     
         3 . The poly-coated roll header of  claim 2 , wherein the disc-like shape of the linerboard base and the disc-like shape of the coating defines an equivalent disc-like shape. 
     
     
         4 . The poly-coated roll header of  claim 1 , wherein the linerboard base is included in the group consisting of: any conventional type of flexible paper material, a cardboard, a laminated paper, a virgin kraft paper, a recycled paper, a corrugated paper material or any combination thereof. 
     
     
         5 . The poly-coated roll header of  claim 1 , wherein the thickness of the linerboard base is greater than the thickness of the coating. 
     
     
         6 . The poly-coated roll header of  claim 1 , wherein the basis weight of the linerboard base is 8 times greater than the basis weight of the coating. 
     
     
         7 . The poly-coated roll header of  claim 1 , wherein the coating comprises from 10% to 30% wt. of polypropylene and from 70% to 90% wt. of low density polyethylene. 
     
     
         8 . The poly-coated roll header of  claim 7 , wherein the coating comprises 20% wt. of polypropylene and 80% wt. of low density polyethylene. 
     
     
         9 . A protective wrapper for a paper roll having two ends and a length, the protective wrapper comprising:
 an inner roll header for covering at least partially at least one of the two ends of the paper roll; and   a layer of paper material having a width greater than the length of the paper roll and an edge strip wherein, in use, the edge strip is crimped against at least one of the two ends of the paper roll thereby defining a crimped edge strip; and   a poly-coated roll header for covering at least partially the inner roll header and the crimped edge strip, the poly-coated roll header including:
 a linerboard base having an inner surface; and 
 a coating of a polypropylene mixed with a low density polyethylene applied to at least a portion of the inner surface of the linerboard base, wherein once applied to the at least one of the two ends of the paper roll, the poly-coated roll header protects the at least one of the two ends of the paper roll against the elements. 
   
     
     
         10 . The protective wrapper of  claim 9 , wherein the linerboard base is included in the group consisting of: any conventional type of flexible paper material, a cardboard, a laminated paper, a virgin kraft paper, a recycled paper, a corrugated paper material, or any combination thereof. 
     
     
         11 . The protective wrapper of  claim 9 , wherein the basis weight of the linerboard base is 8 times greater than the basis weight of the coating. 
     
     
         12 . The protective wrapper of  claim 9 , wherein the coating comprises from 10% to 30% wt. of polypropylene and from 70% to 90%% wt. of low density polyethylene. 
     
     
         13 . The protective wrapper of  claim 12 , wherein the coating comprises 20% wt. of polypropylene and 80% wt. of low density polyethylene. 
     
     
         14 . The protective wrapper of  claim 9 , further comprising a layer of heat sensitive material coated to the coating of the poly-coated roll header, the layer of heat sensitive material having a surface area not exceeding another surface area of any one of the two ends of the paper roll. 
     
     
         15 . The protective wrapper of  claim 9 , wherein the poly-coated roll header comprises two poly-coated roll headers and the inner roll header comprises two inner roll headers, one of each for each one of the two ends of the paper roll. 
     
     
         16 . The protective wrapper of  claim 9 , wherein the poly-coated roll header further comprise adhesive properties for being linked with the crimped edge strip and the inner roll header and wherein the adhesive properties are activated by heat, infrared, ultraviolet light, ultrasound, pressure, microwaves, radiowaves, X-rays and any combination thereof. 
     
     
         17 . A method for wrapping a paper roll having two ends and a length, the method comprising:
 installing a coated linerboard, previously coated with a polypropylene mixed with a low density polyethylene, at one of the two ends of the paper roll, thereby providing protection against the elements at the one of the two ends of the paper roll.   
     
     
         18 . The method of  claim 17 , further comprising installing an inner roll header at the one of the two ends of the paper roll, prior to the installing of the coated linerboard. 
     
     
         19 . The method of  claim 18 , further comprising wrapping the paper roll with a layer of paper material having a width greater than the length of the paper roll and an edge strip, after installing the inner roll header and prior to installing the coated linerboard. 
     
     
         20 . The method of  claim 19 , further comprising crimping inwardly the edge strip against the inner roll header. 
     
     
         21 . A poly-coated roll header for a paper roll having an end, the poly-coated roll header comprising:
 a layer of a corrugated paper material sandwiched between two linerboard bases, the corrugated paper material sandwiched between two linerboard bases having an inner surface; and   a coating applied to at least a portion of the inner surface of the corrugated paper material sandwiched between two linerboard bases, wherein once applied to the end of the paper roll, the poly-coated roll header protects the end of the paper roll against the elements;   wherein the water resistant coating is included in the group consisting of: a polypropylene mixed with a low density polyethylene, a varnish, a polymeric material or any combination thereof.   
     
     
         22 . The poly-coated roll header of  claim 21 , wherein the linerboard base is included in the group consisting of: any conventional type of flexible paper material, a cardboard, a laminated paper, a virgin kraft paper, a recycled paper, a corrugated paper material or any combination thereof. 
     
     
         23 . (canceled)