Tissue having high strength and low modulus

Patent metadata

Field	Value
Publication number	US-9580870-B2
Application number	US-201615204685-A
Country	US
Kind code	B2
Filing date	Jul 7, 2016
Priority date	Jan 31, 2013
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

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 Strength (GMT) from about 2,200 to about 3,500 g/3″, a Geometric Mean Slope (GM Slope) less than about 10 kg/3″ and a Geometric Mean Stretch (GM Stretch) from about 15 to about 25 percent.

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 GM Stretch from about 18 to about 22 percent.

5. The single ply tissue product of claim 1 having a MD Stretch from about 45 to about 55 percent.

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

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

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

9. The single ply tissue product of claim 1 wherein the tissue product is through-air dried.

10. The single ply tissue product of claim 1 wherein the tissue product is uncreped.

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

• D21H11/04

  Kraft or sulfate pulp · CPC title

• D21H27/005 Primary

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

• Y10T428/24612

  Composite web or sheet · CPC title

• Y10T428/24479

  including variation in thickness · CPC title