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1. (WO2018183335) FIBROUS STRUCTURES COMPRISING ACIDIC CELLULOSIC FIBERS AND METHODS OF MANUFACTURING THE SAME

Pub. No.:    WO/2018/183335    International Application No.:    PCT/US2018/024579
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Wed Mar 28 01:59:59 CEST 2018
IPC: D21H 17/65
D21C 9/18
D21H 11/04
D21H 11/16
D21H 17/28
D21H 27/00
Applicants: KIMBERLY-CLARK WORLDWIDE, INC.
Inventors: PAULSON, David, John
UNDERHILL, Richard, Louis
GOULET, Mike, Thomas
ZWICK, Kenneth, John
Title: FIBROUS STRUCTURES COMPRISING ACIDIC CELLULOSIC FIBERS AND METHODS OF MANUFACTURING THE SAME
Abstract:
The invention relates to fibrous structures having desirable physical properties, such as good tensile strength, low stiffness and high bulk, manufactured using a fiber furnish comprising cellulosic fibers having a pH of 5.0 or less and at least one strength resin. Not only do structures prepared with acidic fibers have desirable physical properties, they may also be manufactured in an energy efficient manner. To achieve the greatest energy savings it is generally desirable that acidic fibers not be subjected to mechanical treatment, such as by refining, prior to forming the fiber into a fibrous structure. Further, it may be desirable to subject the remainder of the fiber furnish to a minimal degree of mechanical treatment, such as by refining, so as to produce a furnish having a freeness greater than about 550 mL.