High efficiency disposable cellulosic wiper
A disposable cellulosic wiper includes a percentage by weight of pulp-derived papermaking fibers, and a percentage by weight of 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 are selected and present in amounts such that the wiper exhibits a Relative Bendtsen Smoothness at 1 kg of pressure of at least 1.5 as compared with a like wiper prepared without 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 Bendtsen Smoothness at 1 kg of pressure of at least 1.5 as compared with a like wiper prepared without 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 25% by weight of the fibrillated regenerated independent cellulosic microfibers.
4. The disposable cellulosic wiper according to claim 1 , wherein the wiper includes more than 30% by weight of the fibrillated regenerated independent cellulosic microfibers.
5. The disposable cellulosic wiper according to claim 1 , wherein the wiper includes more than 35% by weight of the fibrillated regenerated independent cellulosic microfibers.
6. The disposable cellulosic wiper according to claim 1 , wherein the wiper exhibits a Relative Bendtsen Smoothness at 1 kg of pressure of at least 2 as compared with a like wiper prepared without microfibers.
7. The disposable cellulosic wiper according to claim 1 , wherein the wiper exhibits a Relative Bendtsen Smoothness at 1 kg of pressure of at least 2.5 as compared with a like wiper prepared without microfibers.
8. The disposable cellulosic wiper according to claim 1 , wherein the wiper exhibits a Relative Bendtsen Smoothness at 1 kg of pressure of at least 3 as compared with a like wiper prepared without microfibers.
9. The disposable cellulosic wiper according to claim 1 , wherein the wiper exhibits a Relative Bendtsen Smoothness at 1 kg of pressure of from about 1.5 to about 6 as compared with a like wiper prepared without microfibers.
10. The disposable cellulosic wiper according to claim 1 , wherein the wiper has a wiper surface that exhibits a Bendtsen Roughness at 1 kg of pressure of less than 400 ml/min.
11. The disposable cellulosic wiper according to claim 1 , wherein the wiper has a wiper surface that exhibits a Bendtsen Roughness at 1 kg of pressure of less than 350 ml/min.
12. The disposable cellulosic wiper according to claim 1 , wherein the wiper has a wiper surface that exhibits a Bendtsen Roughness at 1 kg of pressure of less than 300 ml/min.
13. The disposable cellulosic wiper according to claim 1 , wherein the wiper has a wiper surface that exhibits a Bendtsen Roughness at 1 kg of pressure of from about 150 ml/min to about 500 ml/min.