High softness, high durability batch tissue incorporating high lignin eucalyptus fiber
US9476162B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2016 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Jan 11, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A cellulosic tissue includes cellulosic fibers that include at least one of (a) chemically pulped fibers and (b) mechanically pulped fibers. The cellulosic fibers include (i) from about 10% to about 50% by weight eucalyptus fibers having a lignin content of at least about 20% by weight, and (ii) a percentage by weight of regenerated cellulosic microfibers. The cellulosic fibers further include virgin chemically pulped fibers, recycle fiber in an amount of up to 50%. The eucalyptus fiber has been prepared from eucalyptus chips by alkaline peroxide mechanical pulping, exhibiting an ISO brightness of at least 0.82×(% VCP)+0.795×(% RF)0.98+0.84×(% APMP), in which % VCP is the percentage of virgin chemical pulp in the sheet, % RF, the percentage of recycle fiber, and % alkaline peroxide mechanical pulping (APMP), the percentage of APMP eucalyptus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.