US 9,481,963 B2 · Manufacturing method of carboxymethyl cellulose nonwoven fabric and use of carboxymethyl cellulose nonwoven fabric manufactured thereby

Abstract

The present invention relates to a manufacturing method of a carboxymethyl cellulose nonwoven fabric which includes the carboxymethylation of cellulose fibers and the subsequent paper-making process to prepare a carboxymethyl cellulose nonwoven fabric. Comparing with the conventional method involving carboxymethylation of a nonwoven fabric, the method of the present invention has convenience and easiness of the process and thus enables production on a large scale. Further, the carboxymethyl cellulose nonwoven fabric manufactured by the present invention is susceptible to gelation upon contact with body fluids or water and thus useful as a medical nonwoven fabric or a mask pack.

Claims9

Dependent claims

A manufacturing method of a wet-laid carboxymethyl cellulose nonwoven fabric having a pore size of 1 to 500 μm, comprising the steps of:

treating cellulose fibers chemically to prepare carboxymethyl cellulose fibers;
disentangling and mixing the carboxymethyl cellulose fibers in a paper-making solution comprising an alcohol solvent, wherein the alcohol solvent is selected from the group consisting of ethanol, methanol, propanol, and mixtures thereof;
and
eliminating the alcohol solvent.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

14/348,733Filed 23 Oct 2013

Priority

KR 10-2012-014310910 Dec 2012

Published

US 2016/0002859 A17 Jan 2016

Granted

1 Nov 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

D21H 27/007
Relating to physical or mechanical properties, e.g. tensile strength, stretch, softness: relating to absorbency, e.g. amount or rate of water…
A61L 15/28
Containing macromolecular materials: polysaccharides or their derivatives
D21H 5/141
Of cellulose fibres only: of fibrous cellulose derivatives
D21H 11/20
Modified by a particular after-treatment: chemically or biochemically modified fibres

Manufacturing method of carboxymethyl cellulose nonwoven fabric and use of carboxymethyl cellulose nonwoven fabric manufactured thereby

Life of this patent

Manufacturing method of carboxymethyl cellulose nonwoven fabric and use of carboxymethyl cellulose nonwoven fabric manufactured thereby

Life of this patent

Abstract

Claims9