Soft creped tissue
AssigneeKimberly-Clark Worldwide, Inc.
InventorsMichael John Rekoske, Louise Cynthia Ellis Coe, Frank Gerald Druecke, James Martin Kaun, Sherri Lynn Laufenberg
Life of this patent
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Abstract
Soft tissues, such as facial tissues, having improved softness can be produced by incorporating two different softening compounds into the tissue, namely an imidazolinium quaternary compound and a cationic amidoamine compound.
Claims10
A soft tissue comprising from about 0.01 to about 1 dry weight percent of a imidazolinium quaternary compound and from about 0.01 to about 1 dry weight percent of a cationic amidoamine compound, said tissue having a Formation Index of 130 or greater, a Void Volume of 8.5 grams per gram or greater and a crepe structure, as measured by the Optical Surface Crepe method, having 60 or fewer crepe peaks having a peak height of 93 microns or greater.
A soft tissue comprising from about 0.01 to about 1 dry weight percent of a imidazolinium quaternary compound and from about 0.01 to about 1 dry weight percent of a cationic amidoamine compound, said tissue having a Formation Index of 160 or greater, a Void Volume of 9.0 grams per gram or greater and a crepe structure, as measured by the Optical Surface Crepe method, having 50 or fewer crepe peaks having a peak height of 93 microns or greater.
A method of making a soft tissue comprising the steps of:
- (a) adding an imidazolinium quaternary compound to an aqueous suspension of papermaking fibers;
- (b) depositing the papermaking fibers onto a papermaking fabric to form a wet web;
- (c) partially dewatering the wet web;
- (d) pressing the dewatered web against the surface of a Yankee dryer, wherein the surface of the Yankee dryer contains a creping adhesive and a cationic amidoamine compound;
- and (e) drying the web and creping the dried web from the surface of the Yankee dryer such that the resulting tissue has a Formation Index of 130 or greater, a Void Volume of 8.5 grams per gram or greater and a crepe structure, as measured by the Optical Surface Crepe method, having 60 or fewer crepe peaks having a peak height of 93 microns or greater.
Dependencies are inferred from the claim text.