Fibrous structures and methods for making same

Patent metadata

Field	Value
Publication number	US-10024000-B2
Application number	US-17057808-A
Country	US
Kind code	B2
Filing date	Jul 10, 2008
Priority date	Jul 17, 2007
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

Fibrous structures that exhibit improved consumer recognizable properties, especially a VFS of greater than about 11 g/g, and to methods for making such fibrous structures are provided.

First claim

What is claimed is:

1. A multi-ply absorbent towel product in roll form comprising a plurality of perforated sheets, wherein the multi-ply absorbent towel product comprises a co-formed fibrous structure comprising a plurality of filaments, wherein the filaments comprise an internal wetting agent and wherein at least one of the filaments exhibits a length of 5.08 cm or greater and a plurality of solid additives randomly dispersed throughout the co-formed fibrous structure wherein at least one of the solid additives comprises a fiber, wherein the multi-ply absorbent towel product exhibits a pore volume distribution such that greater than 60% of the total pore volume present in the multi-ply absorbent towel product exists in pores of radii of greater than 121 μm, and wherein the multi-ply absorbent towel product exhibits a VFS of greater than about 11 g/g, a basis weight of from about 10 g/m 2 to about 120 g/m 2 , and a density of less than 0.60 g/cm 3 .

2. The multi-ply absorbent towel product according to claim 1 wherein the fiber comprises a wood pulp fiber.

3. The multi-ply absorbent towel product according to claim 2 wherein the wood pulp fiber is selected from the group consisting of: Southern Softwood Kraft pulp fibers, Northern Softwood Kraft pulp fibers, Eucalyptus pulp fibers, Acacia pulp fibers.

4. The multi-ply absorbent towel product according to claim 1 wherein at least one of the plurality of filaments comprises a thermoplastic polymer.

5. The multi-ply absorbent towel product according to claim 4 wherein the thermoplastic polymer is selected from the group consisting of: polypropylene, polyethylene, polyester, polylactic acid, polyhydroxyalkanoate, polycaprolactone and mixtures thereof.

6. The multi-ply absorbent towel product according to claim 1 wherein at least one of the plurality of filaments comprises a natural polymer.

7. The multi-ply absorbent towel product according to claim 6 wherein the natural polymer is selected from the group consisting of: starch, starch derivatives, cellulose, cellulose derivatives, hemicellulose, hemicellulose derivatives and mixtures thereof.

8. The multi-ply absorbent towel product according to claim 1 wherein at least one surface of the multi-ply absorbent towel product comprises a layer of the filaments.

9. The multi-ply absorbent towel product according to claim 1 wherein the multi-ply absorbent towel product further exhibits one or more of the following properties: a Dry CD Tensile Modulus of less than about 1500 g/cm and/or a Wet CD TEA of greater than about 35 (g·in)/in 2 and/or a Wet MD TEA of greater than about 40 (g·in)/in 2 .

10. An osmotic material-free multi-ply absorbent towel product in roll form comprising a plurality of perforated sheets, wherein the multi-ply absorbent towel product comprises a co-formed fibrous structure comprising a plurality of filaments, wherein the filaments comprise an internal wetting agent and wherein at least one of the filaments exhibits a length of 5.08 cm or greater and a plurality of solid additives randomly dispersed throughout the co-formed fibrous structure wherein at least one of the solid additives comprises a fiber, wherein the multi-ply absorbent towel product exhibits a pore volume distribution such that greater than 60% of the total pore volume present in the multi-ply absorbent towel product exists in pores of radii of greater than 121 μm, and wherein the multi-ply absorbent towel product exhibits a VFS of greater than about 11 g/g, and wherein the multi-ply absorbent towel product further exhibits a basis weight of from about 10 g/m 2 to about 120 g/m 2 and a density of less than 0.60 g/cm 3 .

11. The multi-ply absorbent towel product according to claim 10 wherein the multi-ply absorbent towel product further exhibits one or more of the following properties: a Dry CD Tensile Modulus of less than about 1500 g/cm and/or a Wet CD TEA of greater than about 35 (g·in)/in 2 and/or a Wet MD TEA of greater than about 40 (g·in)/in 2 .

Assignees

• Barnholtz Steven Lee
• Trokhan Paul Dennis
• Suer Michael Donald
• Procter & Gamble

Inventors

• Barnholtz Steven Lee
• Trokhan Paul Dennis
• Suer Michael Donald

Classifications

• D04H1/56

  in association with fibre formation, e.g. immediately following extrusion of staple fibres · CPC title

• D04H1/407

  containing absorbing substances, e.g. activated carbon · CPC title

• D21H15/06

  Long fibres, i.e. fibres exceeding the upper length limit of conventional paper-making fibres; Filaments · CPC title

• D21H17/25

  Cellulose · CPC title

• D21H13/14

  Polyalkenes, e.g. polystyrene {polyethylene} · CPC title