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AssigneeEssity Hygiene and Health Aktiebolag
InventorsAndrea NODBRANDT, Anna NIHLSTRAND, Daniel HAGBERG, Véronique WISS
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A method for consolidating a fibrous material of plant-based fibers, such as cellulose fibers and/or poly-lactic acid fibers, the method including: applying to the fibrous material an aqueous solution including a cellulose derivative, and/or a salt thereof, and an acid, the aqueous solution having a pH within the range of from 3 to 7, optionally within the range of from 3 to 6, optionally within the range of from 3 to 4.5; and drying the bonded fibrous material, optionally at 100° C. or higher. Also, a fibrous material formed by the method, an aqueous binder solution including a cellulose derivative, and/or a salt thereof, and an acid, and a nonwoven material including airlaid plant-based fibers being consolidated by a bio-based binder in the presence of a carboxylic acid, the bio-based binder being a cellulose derivative, and/or a salt thereof.
A method for consolidating a fibrous material comprising plant-based fibers, the method comprising the steps of:
An aqueous binder solution comprising a cellulose derivative, and/or a salt thereof, and an acid, the aqueous solution having a pH within the range of from 3 to 7.
A nonwoven material comprising plant-based fibers, the plant-based fibers being consolidated together by a bio-based binder in presence of a carboxylic acid, the bio-based binder being a cellulose derivative, and/or a salt thereof, wherein the nonwoven has a pH within the range of from 3.5 to 5.5, as measured with the method as disclosed herein.
A nonwoven material comprising plant-based fibers, the plant-based fibers being consolidated together by a bio-based binder in presence of a carboxylic acid, the bio-based binder being a cellulose derivative, and/or a salt thereof, the nonwoven having a wet maximum tensile strength in machine direction (MD) of 100 N/m or more, and wet maximum tensile strength in cross direction (CD) of 100 N/m or more, as measured according to NWSP 110.4R0 (15).
Dependencies are inferred from the claim text.