High Softness, High Durability Bath Tissue Incorporating High Lignin Eucalyptus Fiber

摘要

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.

主权项

1. A cellulosic tissue comprising:
(A) cellulosic fibers that include at least one of (a) chemically pulped fibers and (b) mechanically pulped fibers, wherein 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; and (B) virgin chemically pulped fibers, recycle fiber in an amount of up to 50%,
wherein 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), andwherein % 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.