Tissue having high strength and low modulus

Patent metadata

Field	Value
Publication number	US-9410290-B2
Application number	US-201514932158-A
Country	US
Kind code	B2
Filing date	Nov 4, 2015
Priority date	Jan 31, 2013
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

The present invention provides tissue products having a high degree of stretch and low modulus at relatively high tensile strengths, such as geometric mean tensile strengths greater than about 1500 g/3″ and more preferably greater than about 2000 g/3″. The combination of a tough, yet relatively supple sheet is preferably achieved by subjecting the embryonic web to a speed differential as it is passed from one fabric in the papermaking process to another, commonly referred to as rush transfer.

First claim

We claim:

1. A single ply tissue product having a Geometric Mean Tensile (GMT) from about 2,500 to about 2,750 g/3″, a MD Slope from about 3.0 to about 5.0 kg and a Stiffness Index from about 2.0 to about 5.0.

2. The single ply tissue product of claim 1 having a basis weight from about 35 to about 70 gsm.

3. The single ply tissue product of claim 1 having a basis weight from about 50 to about 70 gsm.

4. The single ply tissue product of claim 1 having a Geometric Mean (GM) Stretch from about 15 to about 25 percent.

5. The single ply tissue product of claim 1 having a GM Stretch from about 18 to about 22 percent.

6. The single ply tissue product of claim 1 having a Machine Direction (MD)Stretch from about 45 to about 55 percent.

7. The single ply tissue product of claim 1 having a MD Tensile Energy Absorption (TEA) greater than about 45 g*cm/cm 2 .

8. The single ply tissue product of claim 1 having a GM Slope from about 4.0 to about 7.5.

9. The single ply tissue product of claim 1 having a GM Slope from about 4.0 to about 7.5, a GM Stretch from about 18 to about 22 percent and a MD TEA from about 40 to about 100 g*cm/cm 2 .

10. The single ply tissue product of claim 1 having a basis weight from about 50 to about 70 gsm and a GM Slope from about 4.0 to about 7.5.

11. A single ply tissue product having a basis weight from about 50 to about 70 gsm, a GMT from about 2,500 to about 2,750 g/3″, a GM Slope from about 4.0 to about 7.5 and a Stiffness Index from about 2.0 to about 5.0.

12. The single ply tissue product of claim 11 having a GM Stretch from about 15 to about 25 percent.

13. The single ply tissue product of claim 11 having a GM Stretch from about 18 to about 22 percent.

14. The single ply tissue product of claim 11 having a MD Stretch from about 45 to about 55 percent.

15. The single ply tissue product of claim 11 having a MD TEA greater than about 45 g*cm/cm 2 .

16. The single ply tissue product of claim 11 having a MD TEA from about 40 to about 100 g*cm/cm 2 .

Assignees

• Kimberly Clark Co

Inventors

• Hermans Michael Alan
• Johnston Angela Ann
• Koch Gretchen Sarah
• Tirimacco Maurizio
• Mccormick Erin Ann
• Sachs Mark William
• Holz Jeffrey Dean

Classifications

• Y10T428/24612

  Composite web or sheet · CPC title

• D21H27/005 Primary

  relating to physical or mechanical properties, e.g. tensile strength, stretch, softness · CPC title

• Y10T428/24479

  including variation in thickness · CPC title

• D21H11/04

  Kraft or sulfate pulp · CPC title

• Y10T428/27

  Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.] · CPC title