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US 4,447,294 AGranted
Process for making absorbent tissue paper with high wet strength and low dry strength
AssigneeThe Procter & Gamble Company
InventorThomas W. Osborn, III
Life of this patent
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Abstract
A process for making soft, absorbent tissue paper webs and the webs made by that process. In the first step, a furnish of papermaking fibers and a wet strength resin is provided. A wet fibrous web is made from the furnish and the wet web is dried. Next, the wet strength resin in the web is at least partially cured. A nitrogenous cationic debonding agent is then incorporated into the dried web.
Claims8
A process for making soft, absorbent tissue paper webs comprising the steps of:
- (a) providing a papermaking furnish comprising papermaking fibers and from about 0.25% to about 3% by weight of said fibers of at least one wet strength resin;
- (b) forming a wet fibrous web from said papermaking furnish;
- (c) drying said web until said web contains not more than about 20% by weight moisture;
- (d) at least partially curing said wet strength resin in said web;
- and
- (e) incorporating into said web from about 0.1% to about 2.5% by weight of said fibers of at least one cationic, nitrogenous debonding agent.
3 more elements
Dependencies are inferred from the claim text.