The grocery retail industry is striving with low margins and an ever-increasing competition from e-commerce applications. Therefore, as a mean to save time, money andincrease the efficiency in the supply chain, perforated shelf-ready packages (SRP) hassince a long time been used. However, there is also problems related to this perforation; it weakens the transport packaging and makes it more sensitive to damage onthe way to the shelf. The current guidelines are focused on appearance of the box onthe shelf, e.g. how much of the product is seen and evenness of perforate edge, andnot on the mechanical properties of the box.Today there exist much knowledge about perforations inhouse in the die cutting industry. This knowledge is however unattainable for outsiders. Further the questionarises about how well founded said knowledge is. The scientific literature offers littleinformation about the basics of perforation and how it affects the mechanical properties of the board and box. This study is an attempt to build knowledge, useful toconverters and industrial users, in a systematic way.In this paper several different perforations patterns have been studied from a mechanical point of view. The experiments were designed to answer some basic questionsabout how different nick lengths and distances affects the strength of the perforatione.g. at different cut/uncut ratios. Among methods studied were tensile testing, bending stiffness, compression testing and edge compression test. The different methodswere compared regarding sensitivity to discriminate between different perforationpatterns and give a useful classification of the perforation.