Soft high basis weight tissue

Patent metadata

Field	Value
Publication number	US-11634869-B2
Application number	US-202117210624-A
Country	US
Kind code	B2
Filing date	Mar 24, 2021
Priority date	Mar 20, 2015
Publication date	Apr 25, 2023
Grant date	Apr 25, 2023

Abstract

The present invention provides multi-ply creped tissue products, and in particular embodiments creped wet pressed tissue products, having substantially higher per-ply basis weights, such as from about 20 to about 30 gsm, without the negative effects often associated with higher basis weight. As such, the tissue products are generally soft and flexible, having a softness value (measured as TS7) less than about 12.0 and a Stiffness Index less than about 20. While being soft and flexible, the instant tissue products are durable enough to withstand use, such as having a GMT greater than about 600 g/3″ and a Burst Index greater than about 12.0.

First claim

What is claimed is:

1. A multi-ply creped wet pressed tissue product comprising a first creped wet pressed tissue ply having a basis weight greater than 20.0 grams per square meter (gsm) and a second creped wet pressed tissue ply having a basis weight greater than 20.0 gsm, the product having a basis weight from 40.0 to 50.0 gsm, a geometric mean tensile (GMT) from 600 to 1,000 g/3″ and a TS7 value less than 12.0.

2. The multi-ply creped wet pressed tissue product of claim 1 having a TS7 value from 9.0 to 12.0.

3. The multi-ply creped wet pressed tissue product of claim 1 having a TS7 value from 8.0 to 10.5.

4. The multi-ply creped wet pressed tissue product of claim 1 wherein the tissue product has a GMT from 700 to 900 g/3″ and a Stiffness Index from about 10.0 to about 20.0.

5. The multi-ply creped wet pressed tissue product of claim 1 wherein the tissue product has a GMT from 700 to 900 g/3″ and a Stiffness Index from about 8.0 to about 18.0.

6. The multi-ply creped wet pressed tissue product of claim 1 wherein the tissue product has a basis weight from about 42.0 to about 50.0 gsm and a TS7 value less than about 10.0.

7. The multi-ply creped wet pressed tissue product of claim 1 wherein the first and the second creped wet pressed tissue plies each have a basis weight from about 20.0 to about 25.0 gsm.

8. The multi-ply creped wet pressed tissue product of claim 1 wherein the first and the second creped wet pressed tissue plies each have a basis weight from about 22.0 to about 25.0 gsm.

9. The multi-ply creped wet pressed tissue product of claim 1 wherein the tissue product has a basis weight from about 40 to about 60 gsm, a GMT from 700 to 900 g/3″ and a Stiffness Index from 10.0 to 20.0.

10. The multi-ply creped wet pressed tissue product of claim 1 wherein each of the first and the second creped wet pressed tissue plies comprise a first and second layer, the first layer comprising hardwood pulp fibers and the second layer comprising softwood pulp fibers.

11. The multi-ply creped wet pressed tissue product of claim 10 wherein each of the first and the second creped wet pressed tissue plies comprise about 60 percent or greater, by weight of the ply, hardwood pulp fibers and about 40 percent or less, by weight of the ply, softwood pulp fibers.

12. The multi-ply creped wet pressed tissue product of claim 11 wherein each of the first and the second creped wet pressed tissue plies have an outer surface and a creping composition comprising a water soluble adhesive and a water soluble release agent disposed thereon.

13. The multi-ply creped wet pressed tissue product of claim 12 wherein the water soluble adhesive is selected from polyamidoamine-epichlorohydrin resin, polyamine-epichlorohydrin resin, polyvinyl alcohol, polyvinylamine, polyethyleneimine, polyacrylamide, polymethacrylamide, poly(acryiic acid), poly(methacrylic acid), poly(hydroxyethyl acrylate), poly(hydroxyethyl methacrylate), poly(n-vinyl pyrrolidinone), poly(ethylene oxide), hydroxyethyl cellulose, hydroxypropyl cellulose, guar gum, starch, agar, chitosan, alginic acid or carboxymethyl cellulose, and the water soluble release agent is a polyamide-epihalohydrin.

14. The multi-ply creped wet pressed tissue product of claim 13 wherein the tissue product has a GMT from about 700 to about 900 g/3″ and a Stiffness Index from 15.0 to 20.0.

15. The multi-ply creped wet pressed tissue product of claim 14 wherein the tissue product has a TS7 value from 8.0 to 10.5.

16. The multi-ply creped wet pressed tissue product of claim 1 wherein the tissue product has a machine-direction stretch (MD Stretch) greater than about 20 percent.

17. The multi-ply creped wet pressed tissue product of claim 1 wherein the tissue product has a cross machine-direction stretch (CD Stretch) from 5.0 to 7.0 percent.

Assignees

• Kimberly Clark Co

Inventors

• Margo Moreno Oriol
• Werner Iv John Alexander
• Hickey Steven J
• Bradford Paul David
• Bobba Cristiano
• Massarotti Giovanni

Classifications

• B31F1/12

  Crêping · CPC title

• D21H21/146

  Crêping adhesives · CPC title

• D21H5/00

  Special paper or cardboard not otherwise provided for (duplicating or recording paper B41M) · CPC title

• B31F1/126

  including making of the paper to be crêped · CPC title

• D21H27/002 Primary

  Tissue paper; Absorbent paper (D21H21/22, D21H27/02, D21H27/20 take precedence; toilet paper A47K10/00; absorbent pads for physiological fluids A61L15/16; making on paper-making machines D21F11/00) · CPC title