Development of a 4-point bending test to characterize creases on paperboard and packaging material
During the manufacturing of a paperboard-based package, the material is in one step folded to obtain the desired shape of the end product. Prior to this step, the material undergoes another processing step, creasing, in which the material is damaged along the folding lines. The result of the creasing process is that the material delaminates which, in turn, causes the material to fold in smooth lin