Non-woven fabric containing a disinfecting agent and method for producing the same
The present invention relates to a non-woven fabric, a method for producing a non-woven fabric, a wipe or tissue and uses thereof as well as a disinfecting method, in particular against bacteria and viruses, such as coronaviruses including severe acute respiratory syndrome coronavirus 2 (SARS-COV-2). The non-woven fabric comprises pulp fibers and/or cellulosic fibers, a binder, a cationic polymer, and a disinfecting agent.
1 . A non-woven fabric comprising:
pulp fibers and/or cellulosic fibers,
a binder, wherein the binder comprises an anionic binder selected from the group consisting of carbohydrate-based binders, protein-based binders and mixtures thereof,
a cationic polymer selected from the group consisting of ammonium compounds, polyamines, cationic carbohydrates, poly(amino saccharides) and mixtures thereof, and
a disinfecting agent, wherein the disinfecting agent comprises a quaternary ammonium compound.
2 . The non-woven fabric according to claim 1 , wherein at least one of the following is fulfilled:
wherein the pulp fibers are comprised in an amount of from 50 to 100 wt.-% based on the total weight of the non-woven fabric; and/or
wherein the cellulosic fibers are comprised in an amount of from 0 to 50 wt.-% based on the total weight of the non-woven fabric; and/or
wherein the cellulosic fibers comprise regenerated cellulose fibers; and/or
wherein the non-woven fabric further comprises biodegradable polymer fibers; and/or
wherein substantially all fibers comprised in the non-woven fabric are the pulp fibers and/or cellulosic fibers and the optional biodegradable polymer fibers; and/or
wherein at least a part of the pulp fibers and/or cellulosic fibers and of the optional biodegradable polymer fibers is entangled with each other; and/or
wherein the non-woven fabric is a single-layer non-woven fabric.
3 . The non-woven fabric according to claim 1 ,
wherein the binder is selected from the group consisting of pectin, starch, cellulose derivatives, and mixtures thereof; and/or
wherein the binder further comprises a binder fiber; and/or
wherein the binder further comprises a binder dispersion.
4 . The non-woven fabric according to claim 1 , wherein the cationic polymer is configured for masking negative charges of the pulp fibers and/or the cellulosic fibers and/or the binder.
5 . The non-woven fabric according to claim 1 , wherein the cationic polymer is selected from the group consisting of polydiallyldimethylammonium chloride (poly-DADMAC) and poly(acrylamide-co-diallyldimethylammonium chloride) (PAM-DADMAC), and mixtures thereof.
6 . The non-woven fabric according to claim 1 , wherein the binder comprises a blend of carboxymethylcellulose and citric acid, and the cationic polymer comprises polydiallyldimethylammonium chloride (poly-DADMAC.
7 . A wipe or tissue comprising or consisting of the non-woven fabric according to claim 1 .
8 . The non-woven fabric according to claim 1 , wherein:
the non-woven fabric comprises pulp fibers in an amount of from 50 to 100 wt.-% based on the total weight of the non-woven fabric,
the non-woven fabric further comprises biodegradable polymer fibers,
at least a part of the pulp fibers and a part of the biodegradable polymer fibers are entangled with each other, and
the non-woven fabric is a single-layer non-woven fabric.
9 . The non-woven fabric according to claim 1 , wherein:
the non-woven fabric comprises cellulosic fibers are comprised in an amount of from 0 to 50 wt.-% based on the total weight of the non-woven fabric,
the non-woven fabric further comprises biodegradable polymer fibers;
at least a part of the cellulosic fibers and a part of the biodegradable polymer fibers are entangled with each other; and
the non-woven fabric is a single-layer non-woven fabric.
10 . The non-woven fabric according to claim 1 , wherein the cellulosic fibers comprise regenerated cellulose fibers.
11 . The non-woven fabric according to claim 1 , wherein
the binder is 0.05 to 5 wt % of the non-woven fabric,
the cationic polymer 0.1 to 10 wt % of the non-woven fabric, and
the disinfecting agent is 0.1 to 20 wt % of the non-woven fabric.
12 . The non-woven fabric according to claim 11 , further comprising:
biodegradable polymer fibers in an amount ranging from 1 to 25 wt % of the total weight of all fibers of the non-woven fabric; and
a biodegradable wet-strength agent in an amount ranging from 0.1 to 3 wt % of the non-woven fabric.
13 . The non-woven fabric according to claim 12 , wherein the non-woven fabric is a single-layer non-woven fabric.