Dispersible moist wipe

Patent metadata

Field	Value
Publication number	US-10113254-B2
Application number	US-201314068847-A
Country	US
Kind code	B2
Filing date	Oct 31, 2013
Priority date	Oct 31, 2013
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

A dispersible moist wipe generally comprises a nonwoven tissue web having regenerated fibers in an amount of about 10 to about 30 percent by weight and natural fibers in an amount of about 70 to about 90 percent by weight. The regenerated fibers and the natural fibers are hydroentangled such that the web has a geometric mean tensile strength of at least 250 grams per inch and a slosh-box break-up time of less than 155 minutes.

First claim

What is claimed is:

1. A dispersible moist wipe comprising a nonwoven tissue web having regenerated fibers in an amount of about 10 to about 30 percent by weight and natural fibers in an amount of about 70 to about 90 percent by weight, wherein the regenerated fibers and the natural fibers are hydroentangled using an energy within a range between about 0.12 kw-hr/kg and about 0.9 kw-hr/kg such that the web has a geometric mean tensile strength of at least 150 grams per inch and a slosh-box break-up time of less than 155 minutes, the nonwoven tissue web being free of a binder and having a formation value of at least 12, wherein the nonwoven tissue web has at least one ribbon-like structure extending along the nonwoven tissue web, and at least one hole in the nonwoven tissue web positioned adjacent the at least one ribbon-like structure, the at least one ribbon-like structure defining an area of higher entanglement of the regenerated fibers and the natural fibers than in other areas of the nonwoven tissue web.

2. The dispersible moist wipe set forth in claim 1 wherein the web has a geometric mean tensile strength of at least 200 grams per inch and a slosh-box break-up time of less than 90 minutes.

3. The dispersible moist wipe set forth in claim 1 wherein the web has a geometric mean tensile strength of at least 250 grams per inch and a slosh-box break-up time of less than 30 minutes.

4. The dispersible moist wipe set forth in claim 1 wherein the nonwoven tissue web has a basis weight in the range of about 30 to about 90 grams per square meter.

5. The dispersible moist wipe set forth in claim 4 wherein the nonwoven tissue web has a basis weight in the range of about 60 to about 75 grams per square meter.

6. The dispersible moist wipe set forth in claim 1 wherein the regenerated fibers comprise at least one of lyocell fibers and rayon fibers.

7. The dispersible moist wipe set forth in claim 1 wherein the natural fibers comprise at least one of southern softwood kraft and cotton.

8. The dispersible moist wipe set forth in claim 1 wherein the regenerated fibers have a length in the range of about 4 millimeters to about 15 millimeters.

9. The dispersible moist wipe set forth in claim 8 wherein the regenerated fibers have a length in the range of about 6 millimeters to about 12 millimeters.

10. The dispersible moist wipe set forth in claim 1 wherein the regenerated fibers have a fineness in the range of about 1 to about 3 deniers.

11. The dispersible moist wipe set forth in claim 1 wherein the web has a formation value of at least 16.

12. A dispersible moist wipe comprising a nonwoven tissue web having regenerated fibers in an amount of about 10 to about 30 percent by weight and natural fibers in an amount of about 70 to about 90 percent by weight, wherein the regenerated fibers and the natural fibers are hydroentangled using an energy within a range between about 0.12 kw-hr/kg and about 0.9 kw-hr/kg such that the web has a geometric mean tensile strength of at least 150 grams per inch and a shaker flask pass-through percentage value at a 12 millimeter screen of at least 60 percent, the nonwoven tissue web being free of a binder and having a formation value of at least 12, wherein the nonwoven tissue web has at least one ribbon-like structure extending along the nonwoven tissue web, and at least one hole in the nonwoven tissue web positioned adjacent the at least one ribbon-like structure, the at least one ribbon-like structure defining an area of higher entanglement of the regenerated fibers and the natural fibers than in other areas of the nonwoven tissue web.

13. The dispersible moist wipe set forth in claim 12 wherein the web has a geometric mean tensile strength of at least 200 grams per inch.

14. The dispersible moist wipe set forth in claim 12 wherein the web has a shaker flask pass-through percentage value at a 12 millimeter screen of at least 80 percent.

15. The dispersible moist wipe set forth in claim 12 wherein the web has a ratio of machine direction tensile strength to cross direction tensile strength of less than about 4.

16. The dispersible moist wipe set forth in claim 12 wherein the regenerated fibers have a length in the range of about 4 millimeters to about 15 millimeters.

17. The dispersible moist wipe set forth in claim 12 wherein the regenerated fibers have a length in the range of about 6 millimeters to about 12 millimeters.

18. The dispersible moist wipe set forth in claim 12 , wherein the web has a formation value of at least 16.

19. A dispersible moist wipe comprising a nonwoven tissue web comprising regenerated fibers having a length in the range of about 4 millimeters to about 15 millimeters and natural fibers having a length greater than about 1 millimeter, wherein the regenerated fibers and the natural fibers are hydroentangled using an energy within a range between about 0.12 kw-hr/kg and about 0.9 kw-hr/kg such that the web has a geometric mean tensile strength of at least 150 grams per inch, the nonwoven tissue web being free of a binder and having a formation value of at least 12, wherein the nonwoven tissue web has at least one ribbon-like structure extending along the nonwoven tissue web, and at least one hole in the nonwoven tissue web positioned adjacent the at least one ribbon-like structure, the at least one ribbon-like structure defining an area of higher entanglement of the regenerated fibers and the natural fibers than in other areas of the nonwoven tissue web.

20. The dispersible moist wipe set forth in claim 19 wherein the web has a machine direction tensile strength of at least 240 grams per inch.

21. The dispersible moist wipe set forth in claim 19 wherein the web has a machine direction tensile strength of at least 300 grams per inch.

22. The dispersible moist wipe set forth in claim 19 wherein the web comprises regenerated fibers in an amount of about 10 to about 20 percent by weight and natural fibers in an amount of about 80 to about 90 percent by weight.

23. The dispersible moist wipe set forth in claim 19 wherein the regenerated fibers have a length in the range of about 6 millimeters to about 12 millimeters.

24. The dispersible moist wipe set forth in claim 19 wherein the web has a formation value of at least 16.

25. The dispersible moist wipe set forth in claim 1 wherein the at least one ribbon-like structure comprises a plurality a ribbon-like structures.

26. The dispersible moist wipe set forth in claim 25 wherein each ribbon-like structure of the plurality of ribbon-like structures is generally parallel to the other ribbon-like structures.

27. The dispersible moist wipe set forth in claim 12 wherein the at least one ribbon-like structure comprises a plurality a ribbon-like structures.

28. The dispersible moist wipe set forth in claim 27 wherein each ribbon-like structure of the plurality of ribbon-like structures is generally parallel to the other ribbon-like structures.

29. The dispersible moist wipe set forth in claim 19 wherein the at least one ribbon-like structure comprises a plurality a ribbon-like structures.

30. The dispersible moist wipe set forth in claim 29 wherein each ribbon-like structure of the plurality of ribbon-like structures is generally parallel to the other ribbon-like structures.

Assignees

• Kimberly Clark Co

Inventors

• Zwick Kenneth John
• Vogel Nathan John
• Baker Joseph Kenneth

Classifications

• D04H1/492

  by fluid jet (D04H1/49 takes precedence) · CPC title

• D04H1/04 Primary

  from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres (felting apparatus D04H17/00) · CPC title

• A47L13/16

  Cloths; Pads; Sponges (metal scraping sponges A47L13/07) · CPC title

• A61K8/0208

  Tissues; Wipes; Patches · CPC title

• D04H1/4258

  Regenerated cellulose series · CPC title