High efficiency disposable cellulosic wiper
A high efficiency disposable cellulosic wiper includes a percentage by weight of pulp-derived papermaking fibers, and a percentage by weight of independent regenerated cellulosic microfibers having a number average diameter of less than about 2 microns and a characteristic Canadian Standard Freeness (CSF) value of less than 175 ml. The microfibers are selected and present in amounts such that the wiper exhibits a relative oil residue removal efficiency of at least 150% as compared with a like sheet without independent regenerated cellulosic microfibers.
1. A disposable cellulosic wiper comprising:
(a) a percentage by weight of pulp-derived papermaking fibers; and
(b) from about 10% to about 75% by weight of fibrillated regenerated independent cellulosic microfibers having a number average diameter of less than about 2 microns and a characteristic Canadian Standard Freeness (CSF) value of less than 175 ml,
the microfibers being selected and present in amounts such that the wiper exhibits a relative oil residue removal efficiency of at least 150% as compared with a like sheet without fibrillated regenerated independent cellulosic microfibers.
2. The disposable cellulosic wiper according to claim 1 , wherein the percentage by weight of the pulp-derived papermaking fibers is 25% or more.
3. The disposable cellulosic wiper according to claim 1 , wherein the wiper includes more than 30% by weight of the fibrillated regenerated independent cellulosic microfibers.
4. The disposable cellulosic wiper according to claim 1 , wherein the wiper includes more than 35% by weight of the fibrillated regenerated independent cellulosic microfibers.
5. The disposable cellulosic wiper according to claim 1 , wherein the wiper exhibits a relative oil residue removal efficiency of at least 200% as compared with a like sheet without fibrillated regenerated independent cellulosic microfibers.
6. The disposable cellulosic wiper according to claim 1 , wherein the wiper exhibits a relative oil residue removal efficiency of at least 300% as compared with a like sheet without fibrillated regenerated independent cellulosic microfibers.
7. The disposable cellulosic wiper according to claim 1 , wherein the wiper exhibits a relative oil residue removal efficiency of at least 400% as compared with a like sheet without fibrillated regenerated independent cellulosic microfibers.
8. The disposable cellulosic wiper according to claim 1 , wherein the wiper exhibits a relative oil residue removal efficiency of from 150% to about 1,000% as compared with a like sheet without fibrillated regenerated independent cellulosic microfibers.
9. The disposable cellulosic wiper according to claim 1 , wherein the wiper comprises from about 30% by weight to about 80% by weight of the pulp-derived papermaking fibers and from about 15% by weight to about 50% by weight of the fibrillated regenerated independent cellulosic microfibers.
10. The disposable cellulosic wiper according to claim 1 , wherein the wiper includes more than 25% by weight of the fibrillated regenerated independent cellulosic microfibers.