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US 7,497,926 B2Granted
Shear-calendering process for producing tissue webs
AssigneeKimberly-Clark Worldwide, Inc.
InventorsMichael Alan Hermans, Clayton C. Troxell, Tammy L. Baum, Sharon S. Chang, James Leo Baggot
Life of this patent
Estimating the term…
Abstract
Spirally wound paper products are disclosed having desirable roll firmness characteristics and softness properties. The rolled products can be made from a single ply tissue web formed according to various processes. Once formed, the tissue web is subjected to a shear-calendering device that increases the fuzz-on-edge properties of the web and preserves the bulk of the web when wound.
Claims17
A shear-calendering process comprising the steps of:
- providing a tissue web, said tissue web comprising pulp fibers;
- and
- conveying the tissue web through a gap formed between an outer surface of a rotating roll and an opposing moving surface such that the tissue web contacts the outer surface of the rotating roll and the opposing moving surface, wherein the outer surface of the roll and the opposing surface are moving at different speeds within the gap, the gap calendering the tissue web while simultaneously subjecting the web to shearing forces sufficient to increase the fuzz-on-edge properties and maintain the bulk of the web, wherein the fuzz-on-edge of the tissue is greater than about 1.7 mm/mm on at least one side of the web.
Dependencies are inferred from the claim text.