Patent ID: 6755940
Filing Date: 2004-06-29
Classification: B65H,D21F,D21G

Abstract:
A method for increasing caliper control of a fibrous web as the web is wound onto a roll, the method comprising the steps of:winding a fibrous web onto a roll to form a wound product, the web containing cellulosic fiber; conveying the web through a nip prior to winding the web onto the roll, the nip applying a pressure to the web, the nip being configured to selectively decrease the caliper of the web by increasing the pressure of the nip; applying the pressure as the web is wound onto the roll to influence caliper of the fibrous web; and adjusting the pressure applied to the web by the nip as the web is wound onto the roll wherein the nip pressure is increased as the diameter of the wound product is increased in order to compensate for caliper reduction in the web as the diameter of the wound product increases.