Wet-pressed tissue and towel products with elevated CD stretch and low tensile ratios made with a high solids fabric crepe process
View Patent ↗An absorbent sheet of cellulosic fibers includes a mixture of hardwood fibers and softwood fibers arranged in a reticulum having: (i) a plurality of pileated fiber enriched regions of relatively high local basis weight interconnected by way of (ii) a plurality of lower local basis weight linking regions whose fiber orientation is biased along the machine direction between pileated regions interconnected thereby, wherein the sheet exhibits a % CD stretch which is at least about 2.75 times the dry tensile ratio of the sheet. Tensile ratios of from about 0.4 to about 4 are readily achieved.
1. An absorbent sheet of cellulosic fibers comprising a mixture of hardwood fibers and softwood fibers arranged in a reticulum having: (i) a plurality of pileated fiber enriched regions of relatively high local basis weight interconnected by way of (ii) a plurality of lower local basis weight linking regions whose fiber orientation is biased along the direction between pileated regions interconnected thereby, wherein the relative basis weight, degree of pileation, hardwood to softwood ratio, fiber length distribution, fiber orientation, and geometry of the reticulum are controlled such that the sheet exhibits a % CD stretch which is at least about 2.75 times the MD/CD dry tensile ratio of the sheet, and wherein the sheet exhibits a percent CD stretch of at least about 4 and a dry tensile ratio of from about 0.4 to about 4.
2. The absorbent cellulosic sheet according to claim 1 , exhibiting a void volume of at least about 5 g/g, a CD stretch of at least about 5 percent, and an MD/CD tensile ratio of less than about 1.75.
3. The absorbent cellulosic sheet according to claim 1 , exhibiting a void volume of at least about 5 g/g, a CD stretch of at least about 5 percent, and an MD/CD tensile ratio of less than about 1.5.
4. The absorbent cellulosic sheet according to claim 1 , exhibiting a void volume of at least about 5 g/g, a CD stretch of at least about 10 percent, and an MD/CD tensile ratio of less than about 2.5.
5. The absorbent cellulosic sheet according to claim 1 , exhibiting a void volume of at least about 5 g/g, a CD stretch of at least about 15 percent, and an MD/CD tensile ratio of less than about 3.5.
6. The absorbent cellulosic sheet according to claim 1 , exhibiting an absorbency of at least about 5 g/g, a CD stretch of at least about 20 percent, and an MD/CD tensile ratio of less than about 5.
7. The absorbent cellulosic sheet according to claim 1 , exhibiting a percent CD stretch which is at least about 3 times the dry tensile ratio of the sheet.
8. The absorbent cellulosic sheet according to claim 1 , exhibiting a percent CD stretch which is at least about 3.25 times the dry tensile ratio of the sheet.
9. The absorbent cellulosic sheet according to claim 1 , exhibiting a percent CD stretch which is at least about 3.5 times the dry tensile ratio of the sheet.
10. The absorbent cellulosic sheet according to claim 1 , wherein the sheet exhibits a percent CD stretch of at least about 5.
11. The absorbent cellulosic sheet according to claim 1 , wherein the sheet exhibits a percent CD stretch of at least about 6.
12. The absorbent cellulosic sheet according to claim 1 , wherein the sheet exhibits a percent CD stretch of at least about 8.
13. The absorbent cellulosic sheet according to claim 1 , wherein the sheet exhibits a percent CD stretch of at least about 10.
14. The absorbent sheet according to claim 1 , having a void volume of at least 6 g/g.
15. The absorbent sheet according to claim 1 , having a void volume of at least 7 g/g.
16. The absorbent sheet according to claim 1 , having a void volume of at least 8 g/g.
17. The absorbent sheet according to claim 1 , having a void volume of at least 9 g/g.
18. The absorbent sheet according to claim 1 , having a void volume of at least 10 g/g.
19. The absorbent sheet according to claim 1 , consisting predominantly of hardwood fiber.
20. The absorbent sheet according to claim 1 , consisting predominantly of softwood fiber.
21. An absorbent sheet of cellulosic fibers comprising a mixture of hardwood fibers and softwood fibers arranged in a reticulum having: (i) a plurality of pileated fiber enriched regions of relatively high local basis weight interconnected by way of(ii) a plurality of lower local basis weight linking regions whose fiber orientation is biased along the direction between pileated regions interconnected thereby, wherein the relative basis weight, degree of pileation, hardwood to softwood ratio, fiber length distribution, fiber orientation, and geometry of the reticulum are controlled such that the sheet exhibits a % CD stretch which is at least 2.75 times the MD/CD dry tensile ratio of the sheet, M MD/CD tensile ratio, with the proviso the sheet has a CD stretch of 3.5% or more.
22. The absorbent sheet according to claim 21 , wherein the sheet exhibits a CD stretch of at least 4%.