Tissue having high strength and low modulus
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.
1. A tissue product having a MD TEA (expressed as g*cm/cm 2 ) equal to or greater than about 0.03234(GMT)−27.452 and a GMT from about 2200 to about 3500 g/3″, where GMT is the geometric mean tensile expressed in grams per three inches.
2. The tissue product of claim 1 having a percent MD Stretch greater than about 25.
3. The tissue product of claim 1 having a percent MD Stretch from about 40 to about 60.
4. The tissue product of claim 1 having a MD TEA from about 75 to about 100 g*cm/cm 2 .
5. The tissue product of claim 1 having a geometric mean stretch (GMS) from about 18 to about 22.
6. The tissue product of claim 1 having a MD Slope less than about 10.0 kg/3″.
7. The tissue product of claim 1 having a MD Slope from about 3 to about 5 kg/3″.
8. The tissue product of claim 1 having a GM Slope from about 4 to about 7.5 kg/3″.
9. The tissue product of claim 1 having a Stiffness Index from about 2.0 to about 5.0.
10. The tissue product of claim 9 wherein the at least one through-air dried tissue ply is uncreped.
11. The tissue product of claim 1 having a bone dry basis weight greater than about 50 gsm.
12. The tissue product of claim 1 having a bone dry basis weight from about 50 to about 70 gsm and a sheet bulk from about 15 to about 20 cc/g.
13. The tissue product of claim 1 wherein the product comprises at least one through-air dried tissue ply.