Method for Producing a Packaging From a Recyclable Material

Abstract

Packaging made of a flat sheet of recyclable paper material with two opposite side edge sections is disclosed, and can include a longitudinal sealing joint along an overlapping section, at which the two opposite side edge sections overlap each other when the flat sheet is folded to form the flat sheet into a tube, a first traverse sealing joint extending across the longitudinal sealing joint to close the tube at a first tube end, and a second traverse sealing joint extending across the longitudinal sealing joint to close the tube at a second tube end opposite to the first tube end with respect to the enclosed substance. The packaging can include glue at triple point sections of the flat sheet, e.g., the first and second triple point sections.

1 . A packaging being made of a flat sheet with two opposite side edge sections and made of a recyclable paper material, the packaging enclosing a substance and comprising:
 a longitudinal sealing joint along an overlapping section, at which the two opposite side edge sections overlap each other when the flat sheet is folded to form the flat sheet into a tube,   a first traverse sealing joint extending across the longitudinal sealing joint to close the tube at a first tube end, and   a second traverse sealing joint extending across the longitudinal sealing joint to close the tube at a second tube end opposite to the first tube end with respect to the enclosed substance,   wherein the packaging includes glue at only triple point sections of the flat sheet including:
 a first amount of glue sealing a first triple point section at which the longitudinal sealing joint and the first traverse sealing joint intersect, and 
 a second amount of glue sealing a second triple point section at which the longitudinal sealing joint and the second traverse sealing joint intersect. 
   
     
     
         2 . The packaging according to  claim 1 , wherein the flat sheet comprises a multilayered structure comprising a base layer made of a paper material and a sealant layer, wherein the sealant layer is provided on at least one of the two opposite side surfaces of the flat sheet, and wherein the sealant layer is provided as a coating or a laminate that acts as a sealant during heat sealing. 
     
     
         3 . The packaging according to  claim 1 , wherein in the overlapping section the side edge sections are facing each other with the same side of the flat sheet. 
     
     
         4 . The packaging according to  claim 1 , wherein the packaging is a single serve pack. 
     
     
         5 . The packaging according to  claim 1 , wherein the first amount of glue is a first spot of glue and the second amount of glue is a second spot of glue. 
     
     
         6 . The packaging according to  claim 1 , wherein the glue is selected from the group consisting of wax, polyolefin (PO)-based, and acrylic-based hotmelt adhesive. 
     
     
         7 . A machine for producing a packaging for enclosing a substance, comprising:
 a feeding system for supplying a flat sheet made of a recyclable paper material and having two opposite side edge sections,   a folding section for folding the supplied flat sheet so that the two opposite side edge sections overlap each other at an overlapping section to form the flat sheet into a tube, a first heat sealing section for heat sealing the tube along the overlapping section to form a longitudinal sealing joint,   a second heat sealing section for heat sealing the tube across the longitudinal sealing joint to close the tube with a first traverse sealing joint at a first tube end,   a filling section for filling the tube with a substance to be packed,   a third heat sealing section for heat sealing the tube across the longitudinal sealing joint to close the tube with a second traverse sealing joint at a second tube end opposite to the first tube end with respect to the substance to be packed so as to form the packaging enclosing said substance, and   a glue application section for applying glue only at triple point sections of the flat sheet:
 a first amount of glue onto the flat sheet at a first triple point section at which the longitudinal sealing joint and the first traverse sealing joint will intersect so that the glue seals the first triple point section upon the heat sealing of the tube at the second heat sealing section to form the first traverse sealing joint, and 
 a second amount of glue onto the flat sheet at a second triple point section at which the longitudinal sealing joint and the second traverse sealing joint will intersect so that the glue seals the second triple point section upon the heat sealing of the tube at the third heat sealing section to form the second traverse sealing joint. 
   
     
     
         8 . The machine according to  claim 7 , wherein the feeding system comprises a reel feeding system for unrolling a longitudinal flat sheet material from a paper reel to supply the flat sheet. 
     
     
         9 . The machine according to  claim 7 , wherein the flat sheet comprises a multilayered structure comprising a base layer made of a paper material and a sealant layer, wherein the sealant layer is provided on at least one of the two opposite side surfaces of the flat sheet, and wherein the sealant layer is provided as a coating or a laminate that acts as a sealant during heat sealing. 
     
     
         10 . The machine according to  claim 7 , wherein in the overlapping section the side edge sections are facing each other with the same side of the flat sheet. 
     
     
         11 . The machine according to  claim 7 , wherein the packaging is a single serve pack. 
     
     
         12 . The machine according to  claim 7 , wherein the first amount of glue is a first spot of glue and the second amount of glue is a second spot of glue. 
     
     
         13 . The machine according to  claim 7 , wherein the glue is selected from the group consisting of wax, polyolefin (PO)-based, and acrylic-based hotmelt adhesive.