A water-dispersible composite structure, which comprises one or more layers, and a method of producing the same. At least a part of the layers is formed by a fibrous web or sheet containing 50-90 parts by weight of wood fibers and 10-90 parts by weight of annual or perennial plant fibers and/or 10-50 parts by weight of synthetic short-cut fibers, and 0.1-20% by weight of a binder, calculated from the weight of the fibers, and at least a part of the binder being a water-soluble polymer and another part a water dispersible binder, and the fibrous sheet or web being produced by wet forming. By means of the invention, the fibers of the composite structure can be recovered and recycled by equipment conventionally used in the paper and paperboard industry.

The present application relates to a composition for manufacturing paper and a method for manufacturing paper using same. The composition for manufacturing paper of the present application comprises a pulp fiber and a polymer fiber, and the content ratio between the pulp fiber and the polymer fiber is 50:50 to 95:5.

The present application relates to a composition for manufacturing paper and a method for manufacturing paper using same. The composition for manufacturing paper of the present application comprises a pulp fiber and a polymer fiber, and the content ratio between the pulp fiber and the polymer fiber is 50:50 to 95:5.

A ply fibrous product comprises at least one ply selected from a nonwoven ply and a tissue paper ply, wherein the at least one ply selected from a nonwoven ply and a tissue paper ply comprises cellulosic fibers comprising an organic polycarboxylic acid and wherein the organic polycarboxylic acid has at least one carboxyl group covalently bound to the cellulosic fibers and at least one free carboxyl group. Due to the presence of covalent chemical bonds between a carboxyl group of the polycarboxylic acid and hydroxy groups of the cellulosic fibers present in all substrates, the ply fibrous products display a long-lasting acidic pH even after having been rinsed with water. In some embodiments a long-lasting acidic pH may be achieved in the nonwovens treated with an organic polycarboxylic acid even after washing with a washing detergent.

A ply fibrous product comprises at least one ply selected from a nonwoven ply and a tissue paper ply, wherein the at least one ply selected from a nonwoven ply and a tissue paper ply comprises cellulosic fibers comprising an organic polycarboxylic acid and wherein the organic polycarboxylic acid has at least one carboxyl group covalently bound to the cellulosic fibers and at least one free carboxyl group. Due to the presence of covalent chemical bonds between a carboxyl group of the polycarboxylic acid and hydroxy groups of the cellulosic fibers present in all substrates, the ply fibrous products display a long-lasting acidic pH even after having been rinsed with water. In some embodiments a long-lasting acidic pH may be achieved in the nonwovens treated with an organic polycarboxylic acid even after washing with a washing detergent.

An abrasive backing is generally provided. In some embodiments, the abrasive backing includes a base sheet, comprising wood fibers, synthetic fibers, cellulose filaments, a saturant, wherein the saturant includes two or more latex polymers and a crosslinking agent, and a first surface and opposing second surface, a barrier coating adjacent the first surface of the base sheet, and a backside coating adjacent the opposing second surface of the base sheet. A method of producing an abrasive backing is also provided.

An abrasive backing is generally provided. In some embodiments, the abrasive backing includes a base sheet, comprising wood fibers, synthetic fibers, cellulose filaments, a saturant, wherein the saturant includes two or more latex polymers and a crosslinking agent, and a first surface and opposing second surface, a barrier coating adjacent the first surface of the base sheet, and a backside coating adjacent the opposing second surface of the base sheet. A method of producing an abrasive backing is also provided.

The present invention aims to provide a technique for hindering inorganic particles from dropping from fibers even in contact with a liquid. According to the present invention, inorganic particles can be hindered from dropping from fibers even in contact with a liquid by adding carboxymethyl cellulose or a salt thereof.

The present invention aims to provide a technique for hindering inorganic particles from dropping from fibers even in contact with a liquid. According to the present invention, inorganic particles can be hindered from dropping from fibers even in contact with a liquid by adding carboxymethyl cellulose or a salt thereof.

A water-dispersible composite structure, which comprises one or more layers, and a method of producing the same. At least a part of the layers is formed by a fibrous web or sheet containing 50-90 parts by weight of wood fibers and 10-90 parts by weight of annual or perennial plant fibers and/or 10-50 parts by weight of synthetic short-cut fibers, and 0.1-20% by weight of a binder, calculated from the weight of the fibers, and at least a part of the binder being a water-soluble polymer and another part a water dispersible binder, and the fibrous sheet or web being produced by wet forming. By means of the invention, the fibers of the composite structure can be recovered and recycled by equipment conventionally used in the paper and paperboard industry.