Creped fibrous structures

Patent metadata

Field	Value
Publication number	US-10745865-B2
Application number	US-201715792824-A
Country	US
Kind code	B2
Filing date	Oct 25, 2017
Priority date	Oct 25, 2016
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

Creped fibrous structures having pillows and knuckles, wherein the creped fibrous structures exhibit improved knuckle properties, such as Knuckle Roughness Ra, Knuckle Roughness Rq, and Knuckle Creping Frequency and methods for making same are provided.

First claim

What is claimed is:

1. A creped fibrous structure that exhibits a Knuckle Roughness Ra of less than 9.00 μm as measured according to the MikroCAD Test Method, wherein the fibrous structure comprises a first and second pillow, wherein the first pillow exhibits a bulk building capability of at least 20% of the bulk building capability of the second pillow.

2. The fibrous structure according to claim 1 wherein the fibrous structure exhibits a Dry Recoverability of greater than 1.00.

3. The fibrous structure according to claim 1 wherein the first pillow exhibits a bulk building capability of greater than 16 cc/g.

4. The fibrous structure according to claim 3 wherein the first pillow exhibits a bulk building capability of greater than 17 cc/g.

5. The fibrous structure according to claim 1 wherein the fibrous structure exhibits a wet caliper normalized for basis weight of greater than 0.65 mils/(lb./3000 ft 2 ) as measured according to the Caliper Test Method.

6. The fibrous structure according to claim 1 wherein the fibrous structure is in roll form such that the roll of fibrous structure exhibits a Roll Compressibility of from about 0.5% to about 15% as measured according to the Roll Compressibility Test Method.

7. The fibrous structure according to claim 1 wherein the fibrous structure is in roll form such that the roll of fibrous structure exhibits a Roll Firmness of from about 2.5 mm to about 15 mm as measured according to the Roll Firmness Test Method.

8. The fibrous structure according to claim 1 wherein the fibrous structure is in roll form such that the roll of fibrous structure exhibits a Roll Compressibility of from about 0.5% to about 15% as measured according to the Roll Compressibility Test Method, a roll bulk of about 4 cm 3 /g to about 30 cm 3 /g, and a Roll Firmness of from about 2.5 mm to about 15 mm as measured according to the Roll Firmness Test Method.

9. A creped fibrous structure that exhibits a Knuckle Roughness Rq of less than 11.00 μm as measured by the MikroCAD Test Method, wherein the fibrous structure comprises a first and second pillow, wherein the first pillow exhibits a bulk building capability of at least 20% of the bulk building capability of the second pillow.

10. The fibrous structure according to claim 9 wherein the fibrous structure exhibits a wet caliper normalized for basis weight of greater than 0.65 mils/(lb./3000 ft 2 ) as measured according to the Caliper Test Method.

11. The fibrous structure according to claim 10 wherein the fibrous structure exhibits a wet caliper normalized for basis weight of greater than 0.72 mils/(lb./3000 ft 2 ) as measured according to the Caliper Test Method.

12. The fibrous structure according to claim 9 in roll form wherein the roll exhibits a Roll Compressibility of from about 0.5% to about 15% as measured according to the Roll Compressibility Test Method.

13. The fibrous structure according to claim 9 in roll form wherein the roll exhibits a Roll Firmness of from about 2.5 mm to about 15 mm as measured according to the Roll Firmness Test Method.

14. The fibrous structure according to claim 9 wherein the fibrous structure is in roll form such that the roll of fibrous structure exhibits a Roll Compressibility of from about 0.5% to about 15% as measured according to the Roll Compressibility Test Method, a roll bulk of about 4 cm 3 /g to about 30 cm 3 /g, and a Roll Firmness of from about 2.5 mm to about 15 mm as measured according to the Roll Firmness Test Method.

15. A creped fibrous structure that exhibits a Knuckle Creping Frequency of less than 5.5 #/mm as measured by the MikroCAD Test Method, wherein the fibrous structure comprises a first and second pillow, wherein the first pillow exhibits a bulk building capability of at least 20% of the bulk building capability of the second pillow.

16. The multi-ply fibrous structure according to claim 15 in roll form wherein the roll exhibits a Roll Compressibility of from about 0.5% to about 15% as measured according to the Roll Compressibility Test Method.

17. The multi-ply fibrous structure according to claim 15 in roll form wherein the roll exhibits a Roll Firmness of from about 2.5 mm to about 15 mm as measured according to the Roll Firmness Test Method.

18. The fibrous structure according to claim 15 wherein the fibrous structure is in roll form such that the roll of fibrous structure exhibits a Roll Compressibility of from about 0.5% to about 15% as measured according to the Roll Compressibility Test Method, a roll bulk of about 4 cm 3 /g to about 30 cm 3 /g, and a Roll Firmness of from about 2.5 mm to about 15 mm as measured according to the Roll Firmness Test Method.

Assignees

• Procter & Gamble

Inventors

• Wang Fei
• Barkey Douglas Jay
• Cain James Allen
• Delvecchio Stephen John
• Leimbach Angela Marie
• Piao Kun
• Comer James Kenneth
• Maladen Ryan Dominic
• Jordan-Brown Atiya
• Loebker David Warren

Classifications

• D21H27/008

  characterised by inhomogeneous distribution or incomplete coverage of properties, e.g. obtained by using materials of chemical compounds (D21H23/02, D21H23/76, D21H27/02 take precedence) · CPC title

• D21H27/004

  characterised by specific parameters (D21H27/008 takes precedence) · CPC title

• D21H27/02 Primary

  Patterned paper (patterned coatings D21H19/66; embossing B31F1/07; prepared on the paper-making machines D21F11/00) · CPC title

• B31F1/16

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

• D21F3/045

  including at least one extended press nip · CPC title