Patent ID: 7678228
Filing Date: 2010-03-16
Classification: D21H

Abstract:
1. A method of increasing the strength of a paper towel basesheet comprising topically applying an aqueous binder composition to one or both outer surfaces of the web to produce a fibrous web having at least one binder-treated surface, wherein the binder composition comprises a mixture of an azetidinium-reactive polymer, an azetidinium-functional cross-linking polymer and from about 1 to about 25 weight percent, on a solids basis relative to the amount of the azetidinium-reactive polymer, of an anti-blocking additive, and thereafter adhering a binder-treated surface of the fibrous web to a creping cylinder and creping the web, wherein the anti-blocking additive is selected from the group consisting of glyoxal, gluteraldehyde, waxes and sugars.