2014 Volume 68 Issue 7 Pages 794-801
Recently, containerboard basis weights have been decreasing in terms of resource or cost saving. Such a trend will cause some quality problems, one of which is moisture wrinkles observed in containerboard rolls.
In this study, containerboard rolls manufactured by six different mills were stored in the same place for a period of time to observe moisture wrinkles and to monitor the moisture content of rolls. Multiple regression analysis of the result suggested that moisture wrinkles correlated significantly with stiffness, hygroexpansion and formation.
Furthermore, numerical simulations using the finite element method were also performed to confirm the effect of these three factors on moisture wrinkles.
