Method and machine for packaging rolls of paper, and pack obtained

Abstract

The pack includes a geometrically ordered group of one or more rolls; a wrapping sheet that laterally wraps the group of rolls and forms folded flaps on two substantially flat and opposite faces of the pack. A respective adhesive sheet is applied to the folded flaps of at least one of the two substantially flat and opposite faces.

1 - 20 . (canceled) 
     
     
         21 . A pack of rolls of tissue paper, comprising:
 a geometrically ordered group of one or more rolls;   a wrapping sheet that laterally wraps the geometrically ordered group of one or more rolls and forms folded flaps on two substantially flat and opposite faces of the pack;   wherein a respective adhesive sheet is applied to said folded flaps of each of the two substantially flat and opposite faces.   
     
     
         22 . The pack as claimed in  claim 21 , wherein the respective adhesive sheet has a surface that covers at least 30% of a surface of a respective one of the two substantially flat and opposite faces. 
     
     
         23 . The pack as claimed in  claim 21 , wherein the folded flaps of the wrapping sheet are stabilized in closed position by the respective adhesive sheet. 
     
     
         24 . The pack as claimed in  claim 21 , wherein the wrapping sheet comprises a polymeric material. 
     
     
         25 . The pack as claimed in  claim 21 , wherein the folded flaps are mutually welded. 
     
     
         26 . The pack as claimed in  claim 21 , wherein the folded flaps are mutually overlapped and completely cover a respective one of the two substantially flat and opposite faces. 
     
     
         27 . The pack as claimed in  claim 21 , wherein the folded flaps leave an area without wrapping sheet on a respective one of the two substantially flat and opposite faces, said area without wrapping sheet being covered by the adhesive sheet. 
     
     
         28 . The pack as claimed in  claim 27 , wherein the adhesive sheet has a perimeter area provided with glue and a central area which is without glue. 
     
     
         29 . The pack as claimed in  claim 21 , wherein the pack includes a holding handle. 
     
     
         30 . The pack as claimed in  claim 29 , wherein the holding handle is formed by the adhesive sheet. 
     
     
         31 . The pack as claimed in  claim 29 , wherein the holding handle is secured to the pack by the adhesive sheet. 
     
     
         32 . A method for producing a pack of rolls comprising steps of:
 forming a geometrically ordered group of one or more rolls;   wrapping a wrapping sheet around the geometrically ordered group of one or more rolls and folding flaps of said wrapping sheet on two substantially flat and opposite faces defined by the geometrically ordered group of one or more rolls; and   applying a respective adhesive sheet to each of the two substantially flat and opposite faces.   
     
     
         33 . The method as claimed in  claim 32 , wherein the respective adhesive sheet has a surface that covers at least 30% of a surface of a respective one of the two substantially flat and opposite faces. 
     
     
         34 . The method as claimed in  claim 32 , wherein the folded flaps are mutually joined and stabilized by the respective adhesive sheet. 
     
     
         35 . The method as claimed in  claim 32 , further comprising mutually welding the folded flaps before applying the respective adhesive sheet thereto. 
     
     
         36 . The method as claimed in  claim 32 , further comprising forming a handle for the pack. 
     
     
         37 . The method as claimed in  claim 36 , wherein the forming of a handle for the pack comprises fixing a handle to the pack by said adhesive sheet. 
     
     
         38 . The method as claimed in  claim 36 , wherein the forming of a handle for the pack comprises shaping the respective adhesive sheet so as to form said handle. 
     
     
         39 . A machine for producing packs of rolls comprising:
 a wrapping station, constructed and arranged to wrap a geometrically ordered group of rolls in a wrapping sheet, forming folded flaps of said wrapping sheet on two substantially flat and opposite faces of said geometrically ordered group of rolls; and   along a feed path of the geometrically ordered groups of rolls, downstream of the wrapping station with respect to a direction of feed of the geometrically ordered groups of rolls along the feed path, a station for applying respective adhesive sheets to each of said two substantially flat and opposite faces.   
     
     
         40 . The machine as claimed in  claim 39 , wherein between the wrapping station and the station for applying the adhesive sheets, a welding station is constructed, arranged and controlled to mutually weld the folded flaps of the wrapping sheet.