Fibrous structure-containing articles that exhibit consumer relevant properties

Patent metadata

Field	Value
Publication number	US-11858245-B2
Application number	US-202217703119-A
Country	US
Kind code	B2
Filing date	Mar 24, 2022
Priority date	Oct 17, 2016
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

Articles, such as sanitary tissue products, including fibrous structures, and more particularly articles including fibrous structures having a plurality of fibrous elements wherein the article exhibits differential cellulose content throughout the thickness of the article and methods for making same are provided.

First claim

What is claimed is:

1. A multi-ply fibrous structure comprising:
a. a first ply comprising: a plurality of wood pulp fibers and a plurality of thermoplastic meltblown filaments selected from the group consisting of polyester thermoplastic meltblown filaments, nylon thermoplastic meltblown filaments, polyolefin thermoplastic meltblown filaments, biodegradable thermoplastic meltblown filaments, compostable thermoplastic meltblown filaments, and mixtures thereof, wherein the plurality of thermoplastic meltblown filaments exhibit a length of greater than or equal to 5.08 cm, wherein a first portion of the plurality of wood pulp fibers are in the form of a first wet laid fibrous structure and a second portion of the plurality of wood pulp fibers are commingled together with a portion of the thermoplastic meltblown filaments in the form of a coform fibrous structure, wherein the portion of the thermoplastic meltblown filaments in the form of the coform fibrous structure are spun from a die and directly laid on top of the first wet laid fibrous structure; and
b. a second ply comprising a second wet laid fibrous structure comprising a plurality of wood pulp fibers associated with the first wet laid fibrous structure such that the multi-ply fibrous structure exhibits an Absorptive Rate of greater than 0.35 g/sec as measured according to the Absorptive Rate and Capacity CRT Test Method and a Dry Thick Compression of greater than 700 mils*mils/log (gr force/in 2 ) as measured according to the Dry Compressive Modulus Test Method.

2. The multi-ply fibrous structure according to claim 1 wherein at least one of the plurality of thermoplastic meltblown filaments is selected from the group consisting of polyolefin thermoplastic meltblown filaments, polylactic acid thermoplastic meltblown filaments, polyhydroxyalkanoate thermoplastic meltblown filaments, polyesteramide thermoplastic meltblown filaments, polycaprolactone thermoplastic meltblown filaments, and mixtures thereof.

3. The multi-ply fibrous structure according to claim 2 wherein the thermoplastic polymer is a polyolefin selected from the group consisting of: polypropylene, polyethylene, and mixtures thereof.

4. The multi-ply fibrous structure according to claim 1 wherein the multi-ply fibrous structure further exhibits a Bending Modulus of less than 10.00 [(mg*cm·g)/mils 3 ] as measured according to the Flexural Rigidity and Bending Modulus Test Method.

5. The multi-ply fibrous structure according to claim 1 wherein the multi-ply fibrous structure further exhibits a TS7 of less than 17.0 dB V 2 rms as measured according to the Emtec Test Method.

6. The multi-ply fibrous structure according to claim 1 wherein at least one of the plurality of thermoplastic meltblown filaments is selected from the group consisting of biodegradable thermoplastic meltblown filaments, compostable thermoplastic meltblown filaments and mixtures thereof.

7. The multi-ply fibrous structure according to claim 1 wherein at least one of the plurality of thermoplastic meltblown filaments is selected from the group consisting of polylactic acid thermoplastic meltblown filaments, polyhydroxyalkanoate thermoplastic meltblown filaments, polyesteramide thermoplastic meltblown filaments, polycaprolactone thermoplastic meltblown filaments, and mixtures thereof.

8. The multi-ply fibrous structure according to claim 1 wherein at least one of the plurality of thermoplastic meltblown filaments is a polylactic acid thermoplastic meltblown filament.

9. The multi-ply fibrous structure according to claim 1 wherein at least one of the plurality of thermoplastic meltblown filaments is a polyhydroxyalkanoate thermoplastic meltblown filament.

10. A multi-ply sanitary tissue product comprising a multi-ply fibrous structure according to claim 1 .

11. A multi-ply fibrous structure comprising:
a. a first ply comprising: a plurality of wood pulp fibers and a plurality of thermoplastic meltblown filaments selected from the group consisting of polyester thermoplastic meltblown filaments, nylon thermoplastic meltblown filaments, polyolefin thermoplastic meltblown filaments, biodegradable thermoplastic meltblown filaments, compostable thermoplastic meltblown filaments, and mixtures thereof, wherein the plurality of thermoplastic meltblown filaments exhibit a length of greater than or equal to 5.08 cm, wherein a first portion of the plurality of wood pulp fibers are in the form of a first wet laid fibrous structure and a second portion of the plurality of wood pulp fibers are commingled together with a portion of the thermoplastic meltblown filaments in the form of a coform fibrous structure, wherein the portion of the thermoplastic meltblown filaments in the form of the coform fibrous structure are spun from a die and directly laid on top of the first wet laid fibrous structure; and
b. a second ply comprising a second wet laid fibrous structure comprising a plurality of wood pulp fibers associated with the first wet laid fibrous structure such that the multi-ply fibrous structure exhibits an Absorptive Rate of greater than 0.35 g/sec as measured according to the Absorptive Rate and Capacity CRT Test Method and a Wet Thick Compression of greater than 1800 mils*mils/log (gr force/in 2 ) as measured according to the Wet Compressive Modulus Test Method.

12. The multi-ply fibrous structure according to claim 11 wherein at least one of the plurality of thermoplastic meltblown filaments is selected from the group consisting of polyolefin thermoplastic meltblown filaments, polylactic acid thermoplastic meltblown filaments, polyhydroxyalkanoate thermoplastic meltblown filaments, polyesteramide thermoplastic meltblown filaments, polycaprolactone thermoplastic meltblown filaments, and mixtures thereof.

13. The multi-ply fibrous structure according to claim 12 wherein the thermoplastic polymer is a polyolefin selected from the group consisting of: polypropylene, polyethylene, and mixtures thereof.

14. The multi-ply fibrous structure according to claim 11 wherein the multi-ply fibrous structure further exhibits a Bending Modulus of less than 10.00 [(mg*cm·g)/mils 3 ] as measured according to the Flexural Rigidity and Bending Modulus Test Method.

15. The multi-ply fibrous structure according to claim 11 wherein the multi-ply fibrous structure further exhibits a TS7 of less than 17.0 dB V 2 rms as measured according to the Emtec Test Method.

16. The multi-ply fibrous structure according to claim 11 wherein at least one of the plurality of thermoplastic meltblown filaments is selected from the group consisting of biodegradable thermoplastic meltblown filaments, compostable thermoplastic meltblown filaments and mixtures thereof.

17. The multi-ply fibrous structure according to claim 11 wherein at least one of the plurality of thermoplastic meltblown filaments is selected from the group consisting of polylactic acid thermoplastic meltblown filaments, polyhydroxyalkanoate thermoplastic meltblown filaments, polyesteramide thermoplastic meltblown filaments, polycaprolactone thermoplastic meltblown filaments, and mixtures thereof.

18. The multi-ply fibrous structure according to claim 11 wherein at least one of the plurality of thermoplastic meltblown filaments is a polylactic acid thermoplastic meltblown filament.

19. The multi-ply fibrous structure according to claim 11 wherein at least one of the plurality of thermoplastic meltblown filaments is a polyhydroxyalkanoate thermoplastic meltblown filament.

20. A multi-ply sanitary tissue product comprising

Assignees

• Procter & Gamble

Inventors

• Young Christopher Michael
• Stelljes Michael Gomer
• Suer Michael Donald
• Klawitter Timothy James
• Denbow James Roy
• Barnholtz Steven Lee
• Sheehan Jeffrey Glen
• Trokhan Paul Dennis

Classifications

• B32B5/145 Primary

  Variation across the thickness of the layer · CPC title

• B31F1/16

  by elastic belts {(B31F1/18 takes precedence)} · CPC title

• B32B5/08

  the fibres or filaments of a layer being of different substances {, e.g. conjugate fibres, mixture of different fibres} · CPC title

• B32B5/26

  another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} · CPC title

• B32B27/10

  of paper or cardboard · CPC title