Outside vs. inside creasing - A parameter study
Creasing of paperboard is an essential operation to obtain a well defined shape and strength of a package. The creasing tool consists of one male and one female creasing plate. The male plate presses the paperboard into the female plate and introduces damage in the creasing zone. Today the standard creasing operation at Tetra Pak is that the male creasing plate presses the top ply (print side) of