Method for making rolls of tissue sheets having improved properties
AssigneeKimberly-Clark Worldwide, Inc.
InventorsMark Burazin, Edward VanRengen, Kenneth Larson, Jerome Veith, Ralph Anderson, Michael Veith
Life of this patent
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Abstract
The roll properties of tissue sheets are improved either by imparting cross-machine direction dominant bar-like protrusions to the air side of the tissue by using specially woven transfer fabrics and/or by offsetting recurring surface features of the sheet relative to the surface features of adjacent sheets within the roll, such as by providing a throughdryer fabric with an offset seam. Both techniques provide the resulting tissue sheets with improved capabilities for providing an improved combination of roll bulk and roll firmness.
Claims5
A method of making a throughdried tissue sheet comprising (a) depositing an aqueous suspension of papermaking fibers onto a forming fabric to form a wet web;
- (b) dewatering the wet web to a consistency from about 20 to about 30 percent;
- (c) transferring the dewatered web from the forming fabric to a transfer fabric traveling at a speed from about 10 to about 80 percent slower than the forming fabric;
- (d) transferring the web to a throughdrying fabric having from about 5 to about 300 impression knuckles per square inch which are raised at least about 0.005 inch above the plane of the fabric, wherein the web is macroscopically rearranged to conform to the surface of the throughdrying fabric;
- and (e) throughdrying the web, wherein the sheet side of the transfer fabric contains cross-machine direction dominant troughs which impart cross-machine direction bar-like protrusions to the air side of the tissue sheet.
A method of making a throughdried tissue sheet comprising (a) depositing an aqueous suspension of papermaking fibers onto a forming fabric to form a wet web;
- (b) dewatering the wet web to a consistency from about 20 to about 30 percent;
- (c) transferring the dewatered web from the forming fabric to a transfer fabric traveling at a speed from about 10 to about 80 percent slower than the forming fabric;
- (d) transferring the web to a throughdrying fabric having from about 5 to about 300 impression knuckles per square inch which are raised at least about 0.005 inch above the plane of the fabric, wherein the web is macroscopically rearranged to conform to the surface of the throughdrying fabric;
- and (e) throughdrying the web, wherein the throughdrying fabric has an offset seam at an angle of about 2 degrees or less relative to the cross-machine direction of the fabric.
Dependencies are inferred from the claim text.