Highly wettable - highly flexible fluff fibers and disposable absorbent products made of those

• US 20050137547A1
• Filed: 12/19/2003
• Published: 06/23/2005
• Est. Priority Date: 12/19/2003
• Status: Active Grant

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Inventors: Didier Garnier, Gil Bernard, Runge, Troy Michael, Allison, Elizabeth Ann, Berceau, Mary Alice
• Granted Patent: US 7,479,578 B2
• Time in Patent Office: Days
• US Class Current: 604/375
• CPC Class Codes: A61F 13/15203 Properties of the article, e.g. stiffness or absorbency chemical aspects A61L15/00
• CPC Class Codes: A61F 13/53 characterised by the absorbing medium A61F13/20 takes precedence
• CPC Class Codes: D21C 9/007 by mechanical or physical means
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane

Abstract

An absorbent core comprising fluff pulp fiber treated with polysiloxane, wherein the absorbent core has a density of about 0.15 g/cm³ or greater and a Young'"'"'s modulus of about 75 psi or less. The polsiloxane may comprise an amino-functional moiety. The absorbent core may comprise superabsorbent, and may be employed in a disposable absorbent product.

Claims

1. An absorbent core comprising fluff pulp fiber treated with polyiloxane, wherein the absorbent core has a density of about 0.15 g/cm³ or greater and a Young'"'"'s modulus of about 75 psi or less, and wherein the polysiloxane has a general structure of:

2. The absorbent core of claim 1, wherein the absorbent core has a first insult rate of about 1 mL/s or greater.

3. The absorbent core of claim 1, wherein the absorbent core has a basis weight of about 150 g/m² or greater.

6. The absorbent core of claim 1, wherein the polysiloxane comprises an amino-functional moiety.

7. The absorbent core of claim 1, wherein the amino-functional moiety is selected from the group of primary amine, secondary amine, tertiary amine, quaternary amine, unsubstituted amide, and mixtures thereof.

8. The absorbent core of claim 1, wherein the fluff pulp fibers are treated with the polysiloxane before the absorbent core Is formed.

9. The absorbent core of claim 1, further comprising superabsorbent material.

10. The absorbent core of claim 2, further comprising superabsorbent material.

11. A disposable absorbent product containing the absorbent core of claim 1 or claim 9.

12. A disposable absorbent product containing the absorbent core of claim 2 or claim 10.

4. (canceled)

5. (canceled)

13. An absorbent core comprising

a) fluff pulp fiber treated with polysiloxane;

and,

b) superabsorbent material;

wherein the absorbent core has a superabsorbent content of about 25% or greater, a density of about 0.25 g/³ or greater, and a Young'"'"'s modulus of about 500 psi or less, and wherein the polysiloxane has a general structure of;

wherein;

n is an integer ≧

2;

each R′ and

R″

moiety comprises independently an organofunctional group and non-organofunctional group or mixtures thereof.

14. The absorbent core of claim 13, wherein the absorbent core has a first insult rate of about 0.7 mL/s or greater and a second insult rate of about 2 mL/s or greater.

15. The absorbent core of claim 13, wherein the absorbent core has a basis weight of about 50 g/m² or greater.

18. The absorbent core of claim 13, wherein the polysiloxane comprises an amino-functional moiety.

19. The absorbent core of claim 13, wherein the amino-functional moiety is selected from the group of primary amine, secondary amine, tertiary amine, quaternary amine, unsubstituted amide, and mixtures thereof.

20. The absorbent core of claim 13, wherein the fluff pulp fibers are treated with the polysiloxane before the absorbent core is formed.

21. A disposable absorbent product containing the absorbent core of claim 13.

22. A disposable absorbent product containing the absorbent core of claim 14.

16. (canceled)

17. (canceled)

23. An absorbent core comprising

a) fluff pulp fiber treated with polysiloxane;

and

b) superabsorbent material;

wherein the absorbent core has a superabsorbent content of about 25% or greater, has a density of about 0.25 g/cm³ or greater, and a Young'"'"'s modulus of about 500 psi or less and wherein the polysiloxane has a general structure of;

wherein;

n is an integer ≧

2;

each R′ and

R″

moiety comprises independently an organofunctional group and non-organofunctional group or mixtures thereof.

24. The absorbent core of claim 23, wherein the absorbent core has a first insult rate of about 0.7 mL/s or greater and a second Insult rate of about 2 mL/s or greater.

26. The absorbent core of claim 23. wherein the absorbent core has a basis weight of about 50 g/m² or greater.

27. The absorbent core of claim 23, wherein the polysiloxane comprises an amino-functional moiety.

28. The absorbent core of claim 23, wherein the amino-functional moiety is selected from the group of primary amine, secondary amine, tertiary amine, quaternary amine, unsubstituted amide, and mixtures thereof.

29. The absorbent core of claim 23, wherein the fluff pulp fibers are treated with the polysiloxane before the absorbent core is formed.

30. A disposable absorbent product containing the absorbent core of claim 23.

31. A disposable absorbent product containing the absorbent core of claim 24.

25. (canceled)