Soft high basis weight tissue

Patent metadata

Field	Value
Publication number	US-11028539-B2
Application number	US-202016845668-A
Country	US
Kind code	B2
Filing date	Apr 10, 2020
Priority date	Mar 20, 2015
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

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 creped wet pressed tissue product comprising a first creped wet pressed tissue ply having a basis weight greater than 20 grams per square meter (gsm) and a second creped wet pressed tissue ply having a basis weight greater than 20 gsm, wherein the tissue product has a geometric mean tensile (GMT) from about 600 to about 1,000 g/3″ and a Stiffness Index less than about 20.

2. The creped wet pressed tissue product of claim 1 wherein the first and the second creped wet pressed tissue plies each have an outer surface and a conventional creping composition comprising at least one water soluble polymer selected from the group consisting of 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, and carboxymethyl cellulose disposed thereon.

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

4. The creped wet pressed tissue product of claim 1 wherein the tissue product has a GMT from about 700 to about 900 g/3″ and a geometric mean slope (GM Slope) from about 10.0 to about 15.0 kg.

5. The creped wet pressed tissue product of claim 1 wherein the tissue product has a TS7 value less than about 12.0.

6. The creped wet pressed tissue product of claim 1 wherein the tissue product has a TS7 value less than about 10.0.

7. The creped wet pressed tissue product of claim 1 wherein the tissue product has a basis weight from about 42 to about 50 gsm and a TS7 value less than about 10.0.

8. The creped wet pressed tissue product of claim 1 wherein the tissue product has a GMT from about 700 to about 900 g/3″, a geometric mean slope (GM Slope) from about 10.0 to about 15.0 kg and a TS7 value less than about 10.0.

9. The 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.

10. The creped wet pressed tissue product of claim 1 wherein the tissue product has a basis weight from about 40 to about 60 gsm.

11. The creped wet pressed tissue product of claim 1 wherein the tissue product has a basis weight from about 42 to about 50 gsm.

12. The 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 about 600 to about 1,000 g/3″ and a Stiffness Index from about 10.0 to about 20.0.

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

14. The creped wet pressed tissue product of claim 13 wherein 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.

15. The creped wet pressed tissue product of claim 14 wherein the first and the second creped wet pressed tissue plies each have an outer surface and a conventional creping composition comprising at least one water soluble polymer selected from the group consisting of 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, and carboxymethyl cellulose disposed thereon.

16. The creped wet pressed tissue product of claim 15 wherein the tissue product has a GMT from about 700 to about 900 g/3″ and a geometric mean slope (GM Slope) from about 10.0 to about 15.0 kg.

17. The creped wet pressed tissue product of claim 16 wherein the tissue product has a TS7 value less than about 10.0.

Assignees

• Kimberly Clark Co

Inventors

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

Classifications

• D21F11/14 Primary

  Making cellulose wadding, filter or blotting paper · CPC title

• B31F1/126

  including making of the paper to be crêped · CPC title

• D21H27/40

  at least one of the sheets being non-planar, e.g. crêped (crêping or corrugating paper B31F) · 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

• D21H17/20

  Macromolecular organic compounds · CPC title