Soft strong towel and tissue paper
AssigneeJames River Corporation of Virginia
InventorsT. Philips Oriaran, Anthony O. Awofeso, Thomas N. Kershaw, Phuong V. Luu, Cristian M. Neculescu, Michael E. Huss
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Abstract
Disclosed is a method for producing an absorbent creped cellulosic sheet having a high level of surface-perceived softness that comprises continuously forming a web of cellulosic papermaking fibers, adhering said web to a thermal drying means, treating said adhered web with an amido amine salt derived from a partially acid-neutralized amine, and creping said treated web from said thermal drying means.
Claims29
A method for producing an absorbent cellulosic sheet having a high level of surface-perceived softness that comprises continuously;
- a. preparing an aqueous dispersion of cellulosic papermaking fibers,
- b. forming a web of said cellulosic papermaking fibers substantially free of softener induced deposits,
- c. adhereing said web to a thermal drying means,
- d. treating said adhered web with a softener comprising an amido amine salt having the formula:
- [(RCO).sub.2 EDA]HX
- wherein EDA is a diethylenetriamine residue, R is the residue of a fatty acid having from 12 to 22 carbon atoms, and X is an anion wherein the treatment with the amido amine salt is conducted in such a manner that the aqueous phase used in web formation step a) is not contaminated by the amine salt from treatment step d), and
- e. creping said treated web from said thermal drying means.
A method for producing an absorbent cellulosic sheet having a high level of surface-perceived softness that comprises continuously;
- a. preparing an aqueous dispersion of cellulosic papermaking fibers,
- b. forming a web of said cellulosic papermaking fibers substantially free of softener induced deposits,
- c. dewatering the web to a fiber consistency of about 5% to about 50%,
- d. adhereing said web to a thermal drying means,
- e. treating said adhered web with a softener comprising an amido amine having the formula:
- [(RCO).sub.2 EDA]HX
- wherein EDA is a diethylenetriamine residue, R is the residue of a fatty acid having from 12 to 22 carbon atoms, and X is an anion wherein the treatment with the amido amine salt is conducted in such a manner that the aqueous phase used in web formation step a) is not contaminated by the amine salt from treatment step e), and
- f. creping said treated web from said thermal drying means.
A method for producing an absorbent cellulosic sheet having a high level of surface-perceived softness that comprises continuously;
- a. preparing an aqueous dispersion of cellulosic papermaking fibers,
- b. forming a web of said cellulosic papermaking fibers substantially free of softener induced deposits,
- c. dewatering the web to a fiber consistency of about 5% to about 50%,
- d. adhering said web to a thermal drying means,
- e. treating said adhered web with a softener comprising an amido amine salt having the formula
- [(RCO).sub.2 EDA]HX
- wherein EDA is a diethylenetriamine residue, R is the residue of a fatty acid having from 12 to 22 carbon atoms, and X is an anion with the amido amine salt is conducted in such a manner that the aqueous phase used in web formation step a) is not contaminated by the amine salt from treatment step e),
- f. drying the web on the thermal drying means to a consistency of at least about 92%, and
- g. creping said treated web from said thermal drying means.
Dependencies are inferred from the claim text.