Patent ID: 6393719
Filing Date: 2002-05-28
Classification: D21F,F26B

Abstract:
A water-removing apparatus for a papermaking process, the ap paratus having a machine direction and a cross-machine direction perpendicular to the machine direction, the apparatus comprising:a web support designed to receive a fibrous web thereon and to carry the fibrous web in the machine direction; at least one rotary valve pulse generator structured and configured to produce and discharge oscillatory flow-reversing air or gas; and at least one gas-distributing system in fluid communication with the at least one rotary valve pulse generator for delivering the oscillatory flow-reversing air or gas to a predetermined portion of the web, the gas-distributing system terminating with at least one discharge outlet juxtaposed with the web support such that the web support and the at least one discharge outlet form an impingement region therebetween defined by an impingement distance.