Patent ID: 9016497
Filing Date: 2015-04-28
Classification: B31B,B65D,Y10S,Y10T

Abstract:
1. A method for forming a package, wherein the package is moulded from a cardboard blank, the blank having straight sides and rounded corners, the blank comprising a margin area surrounding a middle portion, wherein the margin area is bent upwards to form side walls of the package while the middle portion forms the bottom of the package, comprising prior to moulding, providing the blank with at least two discontinuous areas of reduced bending stiffness compared to a bending stiffness of the middle portion, the at least two discontinuous areas of reduced bending stiffness being located around the middle portion of the blank, wherein the at least two discontinuous areas of reduced bending stiffness are formed as elongated areas that run parallel to the straight sides of the blank and are separated by at least one corner section and wherein the at least one corner section does not have an area of reduced bending stiffness, and molding the package from the blank so that the at least two discontinuous areas of reduced bending stiffness are located in a transition zone between the side walls and the bottom, where the blank is deformed due to moulding.