| 摘要 |
The disclosure relates to a sheet- or web-shaped packaging material (1) for reforming into dimensionally stable packages with straight, well-defined edges and good grip rigidity. The packaging material includes a layer (3) of paper or paperboard which, for purposes of facilitating folding, is provided with a suitable pattern of longitudinal material weakenings (2) along which the packaging material (1) is intended to be folded during the production of the packages. The straight, well-defined edges and good grip rigidity of the packages is made possible in that the longitudinal, fold-facilitating material weakenings (2) are of substantially W-shaped cross section including two mutually parallel linear material ridges (2a) on the one side of the packaging material and two corresponding, mutually parallel material depressions (2b) on the other side of the packaging material. <IMAGE> |
