Dye-capturing non-woven fabric and method for producing the same
AssigneeGlatfelter Gernsbach GmbH
InventorsColin Beveridge, Armin Bauer, Máté Nagy
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Abstract
The present invention relates to a method for producing a dye-capturing non-woven fabric, the method comprising the steps of providing a non-woven substrate and applying a composition to the non-woven substrate, the composition having binding and dye-capturing functionalities. The present invention further relates to a dye-capturing non-woven fabric obtainable by such a method and a dye-capturing non-woven fabric comprising a non-woven substrate comprising cellulose fibers and a dye-capturing agent adhering to the non-woven substrate by means of a binder and/or a dye-capturing agent being absorbed in the non-woven substrate.
Claims9
A method for producing a dye-capturing non-woven fabric, the method comprising the steps of:
- providing a non-woven substrate;
- applying a composition to the non-woven substrate, the composition having binding and dye-capturing functionalities and comprising:
- a binder, wherein the binder comprises polyamido-amine epichlorohydrin (PAAE);
- a dye-capturing agent having a cationic functional group;
- and
- at least one of an acid or a salt thereof;
- stabilizing a charge of the cationic functional group using the binder to obtain a stabilized cationic charge;
- activating the stabilized cationic charge with the at least one of an acid or a salt thereof to obtain an activated charged adduct of the binder, the dye-capturing agent and the at least one of an acid or a salt thereof;
- and
- immobilizing the activated charged adduct at the non-woven substrate.
Dependencies are inferred from the claim text.