Patent ID: 11866235
Assignee: MAYR-MELNHOF KARTON AG
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A blank for producing a three-dimensional structure of paper, cardboard or plastic, in particular a package or the like, comprising:
at least three lateral surfaces, and at least one bottom and/or cover tab for forming the three-dimensional structure in a folded state of the blank,
wherein at least two of the lateral surfaces and/or at least one of the lateral surfaces having the at least one bottom and/or cover tab are connected to each other by at least one mechanically produced creasing line, the mechanically produced creasing line being produced without ablation or other removal of material of the blank such that the material of the creasing line is only displaced, and

at least one groove formed to extend at an angle to the creasing line to impinge on or intersect with the creasing line and thereby absorb residual stresses of the mechanically produced creasing line,
wherein the at least one groove is produced by a laser such that material of the blank is removed from the at least one groove, and the at least one groove is formed within at least one lateral surface of the lateral surfaces connected by the creasing line.