Experimental and numerical investigation of creasing in corrugated paperboard

Abstract

International audienceCreasing is a process which indents a section of corrugated board along fold lines to facilitate a neat fold. Most common failure site in a box made out of corrugated board is at the folds, where the stiffness is reduced by the creasing operation. Crease depth is an important parameter to be controlled. If the crease is too shallow, the section will crack during folding due to excessive strain on the outer liner. On the other hand, if the crease is too deep, the board may crack during the creasing operation itself or it may fail during handling due to excessive reduction in local strength along the fold line. A review of the literature reveals that only a limited amount of research has been carried out on experimental creasing of corrugated boards and comparison with numerical analyses. However, modelling of paper for corrugated board has been successfully done using Hill's plasticity model. In this work, experimental investigations on creasing of corrugated paperboard are carried out. These are complemented by finite element simulations of the creasing process. The simulations are found to be in good agreement with the experimental results. The findings of the work done are helpful in understanding the mechanics of creasing more clearly and in arriving at an appropriate crease depth in order to reduce cracking of corrugated board during the creasing process

An experimental and computational study of laminated paperboard creasing and folding

“…Moreover, Isaksson and Hägglund (2005) use the crack tip energy release rate as a failure criterion for delamination. Beldie (2001), Barbier et al (2004) and Thakkar et al (2008) used conventional Hill-plasticity to simulate the responses of both paperboard and corrugated board.…”

An interface finite element for the simulation of localized membrane-bending deformation in shells

“…the folding lines are scored onto the paperboard by pressing it by a male die with a rule onto a grooved female die. The creasing locally damages the paperboard reducing its bending stiffness and promoting the folding around the design lines [14,22,32,6].…”

Finite Element Analysis of Corrugated Board on Rotary Creasing Process

“…Regarding the creasing process of a fluted material, Harryson et al (4) and Thakkar et al (5) reported about the anisotropic model analysis of Cfb, which was subjected to a creaser indentation, but there was not any discussion about the failure mechanism on the liner. There is not any study of the failure behaviors of the Cm, the outside liner and the inside liner sheet when the failure occurred using a rotary creaser, owing to its complicated structure and to difficulties of taking measurement while performing the process.…”