Packaging blank and package

Abstract

A packaging blank having a multilayer structure for forming a package includes a fibrous base layer, a layer of gas-barrier material, a plurality of layers of heat-seal plastic material, a hole and a separation membrane covering the hole and comprising a layer of gas-barrier material. The hole extends within a plane being defined by a longitudinal axis and a transversal axis orthogonal to the longitudinal axis. An imaginary longitudinal line parallel to the first longitudinal axis and an imaginary transversal line parallel to the transversal axis intersect at a respective center point of the hole. A first maximum extension of the hole along the imaginary longitudinal line is larger than a second maximum extension of the hole along the imaginary transversal line. The first maximum extension ranges between 20 mm and 28 mm.

1 . A packaging blank having a multilayer structure for forming a package comprising:
 a fibrous base layer;   a layer of gas-barrier material;   a plurality of layers of heat-seal plastic material;   a hole; and   a separation membrane covering the hole and comprising a layer of gas-barrier material;   wherein the hole extends within a plane being defined by a longitudinal axis and a transversal axis orthogonal to the longitudinal axis;   wherein an imaginary longitudinal line parallel to the first longitudinal axis and an imaginary transversal line parallel to the transversal axis intersect at a respective center point of the hole;   wherein a first maximum extension of the hole along the imaginary longitudinal line is larger than a second maximum extension of the hole along the imaginary transversal line;   wherein the first maximum extension ranges between 20 mm and 28 mm.   
     
     
         2 . The packaging blank according to  claim 1 , wherein a ratio between the first maximum extension and the second maximum extension ranges between 1.0 and 2.8. 
     
     
         3 . The packaging blank according to  claim 1 , wherein the second maximum extension ranges between 10 mm and 20 mm. 
     
     
         4 . The packaging blank according to  claim 1 , wherein the hole has an asymmetric shape with respect to the imaginary transversal line. 
     
     
         5 . The packaging blank according to  claim 1 , wherein the hole is symmetric with respect to the imaginary longitudinal line. 
     
     
         6 . The packaging blank according to  claim 1 , wherein the hole is delimited by a first lateral edge, a second lateral edge, a first longitudinal edge and a second longitudinal edge;
 wherein respective extensions of the first longitudinal edge and of the second longitudinal edge are larger than respective extensions of the first lateral edge and the second lateral edge;   wherein the respective extension of the first lateral edge is larger than the respective extension of the second lateral edge.   
     
     
         7 . The packaging blank according to  claim 6 , wherein respective extensions of the first longitudinal edge and of the second longitudinal edge equal one another. 
     
     
         8 . The packaging blank according to  claim 6 , wherein the first lateral edge comprises a first connecting portion being connected to the first longitudinal edge and a second connecting portion being connected to the second longitudinal edge;
 wherein the first connecting portion and the second connecting portion are curved;   wherein a respective radius of curvature of the first connecting portion and/or of the second connecting portion ranges between 3.753—75 mm and 5 mm.   
     
     
         9 . The packaging blank according to  claim 8 , wherein the first connecting portion and/or the second connecting portion is/are outwards convex. 
     
     
         10 . The packaging blank according to  claim 6 , wherein the first longitudinal edge and the second longitudinal edge are curved;
 wherein a respective radius of curvature of a respective first section of the first longitudinal edge and of a respective first section of the second longitudinal edge ranges between 200 mm and 280 mm; and/or   wherein a respective radius of curvature of a respective second section of the first longitudinal edge and of a respective second section of the second longitudinal edge ranges between 18 mm and 22 mm.   
     
     
         11 . The packaging blank according to  claim 6 , wherein the second lateral edge comprises a third connecting portion being connected to the first longitudinal edge and a fourth connecting portion being connected to the second longitudinal edge;
 wherein the third connecting portion and the fourth connecting portion are curved;   wherein a respective radius of curvature of the third connecting portion and/or of the fourth connecting portion ranges between 3.5 mm and 5 mm.   
     
     
         12 . The packaging blank according to  claim 6 , wherein the first transversal edge comprises a linear portion. 
     
     
         13 . The packaging blank according to  claim 1 , wherein the separation membrane comprises one or more weakening lines. 
     
     
         14 . A package at least partially formed from a packaging blank according to  claim 1 . 
     
     
         15 . The package according to  claim 14 , comprising a main body formed from the packaging blank and a lid-spout assembly molded about the hole.