Hydrophilic, humectant, soft, pliable, absorbent paper having wet strength agents and method for its manufacture
AssigneeFort James Corporation
InventorsT. Philips Oriaran, Byron E. Burrier, Henry S. Ostrowski, Elroy W. Post, Jacob H. Propp
Life of this patent
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Abstract
Wet pressed absorbent papers having temporary or permanent wet strength properties are disclosed. These are useful as bathroom tissue and napkins. In many applications, these products need not be creped, and in that case they do not have the serpentine configuration.
Claims23
A hydrophilic, humectant, soft, pliant single-ply or multi-ply absorbent wet pressed bathroom tissue to which an organic permanent or temporary wet strength agent has been added, said bathroom tissue formed from cellulosic fibers and optionally up to 50% synthetic fibers and a softener having a melting range of about 0°-40° C. wherein the softener comprises an imidazoline moiety formulated with organic compounds having a weight average molecular weight of about 60 to 1500 selected from the group consisting of alkoxylated polyols, alkoxylated diols, aliphatic diols, aliphatic polyols, and a mixture of these compounds, the amount of softener added is about 1 to 10 pounds per ton of furnish, but within these parameters the addition of the softener is controlled to achieve a ratio of average particle size of dispersed softener to average fiber diameter in the range of about 0.01 to 15 percent, the amount of wet strength agent added per ton of furnish is about 1 to 20 pounds.
A hydrophilic, humectant, soft, pliant single-ply or multi-ply absorbent wet pressed bathroom tissue to which an organic permanent or temporary wet strength agent has been added, the amount of wet strength agent added is about 1 to 20 pounds per ton of furnish, said bathroom tissue having a serpentine configuration formed from cellulosic fibers and optionally up to 50% synthetic fibers and a softener having a melting range of about 0°-40° C., the amount of softener added is about 1 to 1-10 pounds per ton of furnish, but within these parameters the addition of the softener is controlled to achieve a ratio of average particle size of dispersed softener to average fiber diameter in the range of about 0.01 to 15 percent, wherein the softener comprises an imidazoline moiety formulated with organic compounds having a weight average molecular weight of about 60 to 1500 selected from the group consisting of alkoxylated polyols, alkoxylated diols, aliphatic diols, aliphatic polyols, and a mixture of these compounds;
- and wherein said bathroom tissue is formed by adhering the web comprising cellulosic fibers and optionally up to 50% synthetic fiber to a Yankee dryer and creping the web from the Yankee dryer.
Dependencies are inferred from the claim text.