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1. (WO2005067854) COMPOSITES ABSORBANTS ETIRABLES A FORTE PERMEABILITE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

WHAT IS CLAIMED IS:

1. A stretchable absorbent composite, comprising:
a superabsorbent material; and
an elastomeric material; wherein the absorbent composite exhibits a Composite Stretchability of about 50% or more, and a Composite Permeability of about 15 Darcy or more.

2. A stretchable absorbent composite, comprising:
a superabsorbent material; and
an elastomeric material; wherein the absorbent composite exhibits a Composite Stretchability of about 100% or more, and a Composite Permeability of about 10 Darcy or more.

3. The absorbent composite of claim 1 or claim 2, comprising between about 5% and about 95%, or between about 50% and about 95%, by weight superabsorbent material.

4. A stretchable absorbent composite, comprising:
about 60%) by weight or more superabsorbent material; and
an elastomeric material; wherein the absorbent composite exhibits a Composite Stretchability of about 30% or more, and a Composite Permeability of about 15 Darcy or more.

5. The absorbent composite of any one of the preceding claims, further comprising between about 0%> and about 75%>, or between about 0% and about 25%, by weight pulp fibers.

6. The absorbent composite of any one of the preceding claims, comprising between about 5% and about 25%> by weight elastomeric material.

7. The absorbent composite of any one of the preceding claims, further comprising a surfactant.

8. The absorbent composite of any one of the preceding claims, wherein the superabsorbent material has a gel bed permeability under 0.3 psi of about 30 Darcy or more.

9. The absorbent composite of any one of the preceding claims, wherein the superabsorbent material has a Centrifuge Retention Capacity of about 20 grams/gram or more.

10. The absorbent composite of any one of the preceding claims, wherein the superabsorbent material comprises an anionic superabsorbent material surface-treated with a polyvinyl amine solution.

11. The absorbent composite of any one of the preceding claims, wherein the elastomeric material comprises at least one of the group consisting of olefinic copolymers, polyethylene elastomers, polypropylene elastomers, polyester elastomers, ethylene-propylene-diene terpolymers, styrene-isoprene-styrene, styrene-butadiene-styrene, styrene-isoprene-butadiene-styrene, styrene-ethylene/butylene-styrene, styrene-ethylene/propylene-styrene, polyurethane, polyisoprene, cross-linked polybutadiene, and combinations thereof.

12. An absorbent article comprising the absorbent composite of any one of the preceding claims.

13. A method of making the stretchable absorbent composite of any one of the preceding claims, comprising the steps of:
extruding the elastomeric material through at least one meltblown die;
fiberizing a plurality of pulp fibers;
mixing superabsorbent material having a gel bed permeability under 0.3 psi of about 30 Darcy or more with the fiberized pulp fibers and the extruded elastomeric material; and
transferring the mixture of superabsorbent material, fiberized pulp fibers, and extruded elastomeric material onto a conveyor.

14. The method of claim 13, further comprising the step of spraying an aqueous surfactant mixture through the mixture of superabsorbent material, fiberized pulp fibers, and extruded elastomeric material while transferring the mixture of superabsorbent material, fiberized pulp fibers, and extruded elastomeric material onto the conveyor.

15. The method of claim 13 or claim 14, wherein the mixture of superabsorbent material, fiberized pulp fibers, and extruded elastomeric material comprises between about 30% and about 85% by weight superabsorbent material, between about 5% and about 25% by weight elastomeric material, and between about 10% and about 70% by weight pulp fibers.