Absorbent tissue
View Patent ↗The present disclosure offers an improvement in papermaking methods and products, by providing a tissue sheet and a method to obtain a tissue sheet, with improved absorbency at a given basis weight. Thus, by way of example, the present disclosure provides a single ply tissue sheet having a basis weight greater than about 50 gsm and a specific vertical absorbent capacity greater than about 6.0 g/g.
1. A wet-laid tissue product having a geometric mean tensile (GMT) greater than about 2200 g/3″, a bone dry basis weight greater than about 50 gsm and a specific vertical absorbent capacity (expressed as grams per gram) equal to or greater than:
−0.0288BW+7.923
where BW is the bone dry basis weight in grams per square meter.
2. The tissue product of claim 1 having a GMT from about 2200 to about 3500 g/3″.
3. The tissue product of claim 1 wherein the bone dry basis weight is from about 50 to about 70 gsm.
4. The tissue product of claim 1 having a GMT from about 2200 to about 2500 g/3″ and a bone dry basis weight from about 50 to about 65 gsm.
5. The tissue product of claim 1 having a sheet bulk greater than about 10 cc/g.
6. The tissue product of claim 5 wherein the sheet bulk is from about 10 to about 12 cc/g and the basis weight is from about 50 to about 65 gsm.
7. The tissue product of claim 6 having a GMT from about 2200 to about 3500 g/3″.
8. The tissue product of claim 1 wherein the sheet is a through-air dried sheet.
9. The tissue product of claim 1 wherein the sheet is an uncreped through-air dried sheet.
10. A spirally wound tissue product comprising a wet-laid single ply tissue sheet having a geometric mean tensile (GMT) greater than about 2200 g/3″, a bone dry basis weight greater than about 50 gsm, a sheet bulk greater than about 10 cc/g and a specific vertical absorbent capacity equal to or greater than about 6.0 g/g.
11. The spirally wound tissue product of claim 10 wherein the single ply tissue sheet has a GMT from about 2200 to about 3500 g/3″.
12. The spirally wound tissue product of claim 10 wherein the single ply tissue sheet has a basis weight from about 50 to about 70 gsm.
13. The spirally wound tissue product of claim 10 wherein the single ply tissue sheet has a GMT from about 2200 to about 2500 g/3″ and the basis weight is from about 50 to about 65 gsm.
14. The spirally wound tissue product of claim 10 wherein the sheet bulk is from about 10 to about 12 cc/g.
15. The spirally wound tissue product of claim 10 having a Roll Firmness from about 6.0 to about 10.0 mm.
16. The spirally wound tissue product of claim 10 wherein the single ply tissue sheet has a geometric mean slope less than about 10 kg/3″ and a GMT from about 2200 to about 3500 g/3″.
17. The spirally wound tissue product of claim 10 wherein the single ply tissue sheet has a Stiffness Index less than about 5.0.
18. The spirally wound tissue product of claim 10 wherein the single ply tissue sheet has a MD TEA greater than about 50 g*cm/cm 2 .
19. The spirally wound tissue product of claim 10 wherein the single ply tissue sheet is a through-air dried sheet.
20. The spirally wound tissue product of claim 10 wherein the single ply tissue sheet is an uncreped through-air dried sheet.