Apertured Fibrous Structures and Methods for Making Same

Patent metadata

Field	Value
Publication number	US-2016101026-A1
Application number	US-201514879154-A
Country	US
Kind code	A1
Filing date	Oct 9, 2015
Priority date	Oct 10, 2014
Publication date	Apr 14, 2016
Grant date	—

Abstract

Apertured fibrous structures and more particularly apertured fibrous structures containing one or more fibrous elements, for example filaments, containing one or more fibrous element-forming materials and one or more active agents that are releasable from the fibrous element when exposed to conditions of intended use, and methods for making same.

First claim

What is claimed is:

1 . A fibrous structure comprising a plurality of filaments wherein at least one of the filaments comprises one or more filament-forming materials and one or more active agents that are releasable from the filament when exposed to conditions of intended use, the fibrous structure further comprises one or more apertures such that the fibrous structure exhibits two or more of the following properties:
a. a Basis Weight Index Ratio of less than 1 as measured according to the Aperture Parameter Test Method; b. a Basis Weight Index Transition Ratio of greater than 1 as measured according to the Aperture Parameter Test Method; c. a Fiber Orientation Index Ratio of greater than 1 as measured according to the Aperture Parameter Test Method; d. an Average Aperture Equivalent Diameter of greater than 0.15 mm as measured according to the Aperture Parameter Test Method; e. an Average Fractional Open Area of from about 0.005% to about 80% as measured according to the Aperture Parameter Test Method; and f. an Average Aperture Area of greater than 0.02 mm 2 as measured according to the Aperture Parameter Test Method.

2 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits a Basis Weight Index Transition Ratio of greater than 1 as measured according to the Aperture Parameter Test Method.

3 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits a Fiber Orientation Index Ratio of greater than 1 as measured according to the Aperture Parameter Test Method.

4 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits an Average Aperture Equivalent Diameter of greater than 0.15 mm as measured according to the Aperture Parameter Test Method.

5 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits an Average Fractional Open Area of from about 0.005% to about 80% as measured according to the Aperture Parameter Test Method.

6 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits an Average Aperture Area of greater than 0.02 mm 2 as measured according to the Aperture Parameter Test Method.

7 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits a Wall Region Slope of greater than 0.0005 to less than 0.08 as measured according to the Aperture Parameter Test Method.

8 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits a Transition Region Slope of greater than 0.0001 to less than 0.1 as measured according to the Aperture Parameter Test Method.

9 . The fibrous structure according to claim 1 wherein the fibrous structure comprises a plurality of apertures.

10 . The fibrous structure according to claim 1 wherein the fibrous structure comprises two or more classes of apertures such that the fibrous structure exhibits two or more different Average Aperture Equivalent Diameters as measured according to the Aperture Parameter Test Method.

11 . The fibrous structure according to claim 1 wherein two or more of the apertures are spaced apart from one another at a distance of from about 0.2 mm to about 100 mm.

12 . The fibrous structure according to claim 1 wherein the filament-forming material comprises a hydroxyl polymer.

13 . The fibrous structure according to claim 12 wherein the hydroxyl polymer is selected from the group consisting of: pullulan, hydroxypropylmethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, sodium alginate, xanthan gum, tragacanth gum, guar gum, acacia gum, Arabic gum, polyacrylic acid, dextrin, pectin, chitin, collagen, gelatin, zein, gluten, soy protein, casein, polyvinyl alcohol, starch, starch derivatives, hemicellulose, hemicellulose derivatives, proteins, chitosan, chitosan derivatives, polyethylene glycol, tetramethylene ether glycol, hydroxymethyl cellulose, and mixtures thereof.

14 . The fibrous structure according to claim 1 wherein the active agent is selected from the group consisting of: fabric care active agents, dishwashing active agents, hard surface active agents, hair care active agent, floor care active agents, skin care active agents, oral care active agents, medicinal active agents, carpet care active agents, surface care active agents, air care active agents, and mixtures thereof.

15 . The fibrous structure according to claim 1 wherein the active agent is present in the filament at a level of at least 20% by weight of the filament.

16 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits a basis weight of from about 1 g/m 2 to about 10,000 g/m 2 .

17 . The fibrous structure according to claim 1 wherein at least one of the filaments exhibits an average diameter of less than 50 μm as measured according to the Diameter Test Method.

18 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits an average disintegration time of about 60 seconds or less as measured according to the Dissolution Test Method.

19 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits an average dissolution time of about 600 seconds or less as measured according to the Dissolution Test Method.

20 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits an average disintegration time per gsm of about 1.0 seconds/gsm or less as measured according to the Dissolution Test Method.

21 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits an average dissolution time per gsm of about 10 seconds/gsm or less as measured according to the Dissolution Test Method.

22 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits a GM Tensile Strength of greater than 200 g/cm as measured according to the Tensile Test Method.

23 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits a GM Peak Elongation of less than 1000% as measured according to the Tensile Test Method.

24 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits a GM Tangent Modulus of less than 5000 g/cm as measured according to the Tensile Test Method.

25 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits a GM Secant Modulus of less than 5000 g/cm as measured according to the Tensile Test Method.

26 . The fibrous structure according to claim 1 wherein the fibrous structure exhibits a water content of from about 0% to about 20% as measured according to the Water Content Test Method.

27 . A multi-ply fibrous structure comprising a least one fibrous structure according to claim 1 .

Assignees

• Procter & Gamble

Inventors

• Pratt Michael Sean
• Mao Min
• Oertel David Charles
• Flood Janine Anne
• Dufresne Tom Edward
• Chmielewski Paula A
• Dreher Andreas Josef
• Hamad-Ebrahimpour Alyssandrea Hope

Classifications

• C11B9/00 Primary

  Essential oils; Perfumes · CPC title

• D01F1/10 Primary

  Other agents for modifying properties · CPC title

• A61L9/012

  characterised by being in a special form, e.g. gels, emulsions {(A61L9/048 takes precedence)} · CPC title

• A61Q19/00

  Preparations for care of the skin · CPC title

• A61Q11/00

  Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses · CPC title