Woven belt paper polisher
AssigneeAppleton Papers Inc.
InventorMichael Wadzinski
Life of this patent
Estimating the term…
Abstract
A woven belt paper polisher imparts mechanical energy to paper by sliding a woven belt against a paper sheet while the sheet is supported against a shear inducing roll. The contact force, slide distance and the coefficient of friction of the polishing belt result in less polishing material wear, less chance for developing machine direction character on the paper surface, and less chance for machine component damage. The use of an extended belt run outside the polishing section, results in reduced wear, extended uptime, and better polishing surface reconditioning. The use of a commercially produced and modified woven paper machine fabric results in lower operating cost compared to the use of a specialty polishing material.
Claims25
A method of polishing paper, comprising the steps of:
- feeding a length of paper at a first speed around an arcuate portion of a cylindrical roll;
- passing a polishing belt against the arcuate length of the paper at a second speed, the arcuate length of paper being pressed between the polishing belt and the cylindrical roll, wherein the first and second speeds are different;
- polishing the paper with the polishing belt when the paper is in contact with the polishing belt during the step of passing, the paper moving relative to the polishing belt during the step of selectively controlling an amount of movement of the paper relative to the polishing belt in order to vary a degree of polishing of the paper being selectively variable during the step of controlling.
A paper polishing apparatus for polishing paper comprising:
- a polishing roll, around which an arcuate portion of a length of paper is guided;
- a polishing belt, the polishing belt extending past the polishing roll, said arcuate portion of a length of paper on the polishing roll being between the polishing roll and the polishing belt;
- means for driving the polishing roll;
- and
- means for driving the polishing belt with relative movement between the polishing belt and said arcuate portion of a length of paper on the polishing roll to thereby polish said arcuate portion of a length of paper.
A method of polishing paper, comprising the steps of:
- feeding a length of paper at a first speed around an arcuate portion of a cylindrical roll;
- passing a polishing belt against an arcuate length of the paper at a second speed, the arcuate length of paper being pressed between the polishing belt and the cylindrical roll wherein the first and second speeds are different, and the paper and the polishing belt move in a same direction;
- and
- polishing the paper with the polishing belt when the paper is in contact with the polishing belt during the step of passing, the paper moving relative to the polishing belt during the step of polishing.
Dependencies are inferred from the claim text.