Back to results
US 9,078,947 B2Granted
Composition for forming a porous absorbent structure
AssigneeKimberly-Clark Worldwide, Inc.
InventorsJohn Gavin MacDonald, Peter B. Dulcamara, Jr., Dave A. Soerens, Thomas J. Falk
Life of this patent
Estimating the term…
Abstract
A porous absorbent structure is disclosed which includes absorbent particles and a superabsorbent polymer material having less than about 1000 parts per million residual monoethylenically unsaturated monomer, the superabsorbent polymer material substantially coating the absorbent particles and connecting the particles into a porous network to form the porous absorbent structure.
Claims24
A method of forming a porous absorbent structure comprising the steps of:
- providing a superabsorbent polymer material having a viscosity of less than about 10,000 cps and having less than about 1000 parts per million residual monoethylenically unsaturated monomer;
- adding absorbent particles into the superabsorbent polymer material to form a mixture such that the ratio by weight of superabsorbent polymer material to absorbent particles is greater than 3:1;
- spraying the mixture of superabsorbent polymer material and absorbent particles onto a form;
- and
- drying the mixture to produce a porous absorbent structure substantially conforming to the shape of the form.
2 more elements
A method of forming a porous absorbent structure comprising the steps of:
- providing a superabsorbent polymer material having a viscosity of less than about 10,000 cps;
- adding absorbent particles into the superabsorbent polymer material to form a mixture such that the ratio by weight of superabsorbent polymer material to absorbent particles is greater than 3:1;
- spraying the mixture of superabsorbent polymer material and absorbent particles onto a form;
- drying the mixture to produce a porous absorbent structure substantially conforming to the shape of the form;
- and removing the porous absorbent structure from the form.
2 more elements
A porous absorbent structure formed by the process comprising the steps of:
- providing a superabsorbent polymer material having a viscosity of less than about 10,000 cps and having less than about 1000 parts Per million residual monoethylenically unsaturated monomer;
- adding absorbent particles into the superabsorbent polymer material to form a mixture, wherein the ratio by weight of superabsorbent polymer material to absorbent particles in the mixture is greater than 3:1 and less than about 6:1;
- applying the mixture of superabsorbent polymer material and absorbent particles to a form;
- and
- drying the mixture to produce a porous absorbent structure substantially conforming to the shape of the form.
2 more elements
A porous absorbent structure formed by the process comprising the steps of:
- providing a superabsorbent polymer material having a viscosity of less than about 10,000 cps;
- adding absorbent particles into the superabsorbent polymer material to form a mixture, wherein the ratio by weight of superabsorbent polymer material to absorbent particles in the mixture is greater than 3:1 and less than about 6:1;
- applying the mixture of superabsorbent polymer material and absorbent particles to a form;
- drying the mixture to produce a porous absorbent structure substantially conforming to the shape of the form;
- and removing the porous absorbent structure from the form.
2 more elements
A porous absorbent structure comprising:
- absorbent particles;
- a superabsorbent polymer material substantially coating the absorbent particles and connecting the absorbent particles into a porous absorbent network;
- and
- wherein the ratio by weight of the superabsorbent polymer material to the absorbent particles in the porous absorbent structure is greater than 1:1 and less than 1.5:1 and wherein the superabsorbent polymer material has less than about 1000 parts per million residual monoethylenically unsaturated monomer.
1 more element
A porous absorbent structure comprising:
- absorbent particles;
- a superabsorbent polymer material substantially coating the absorbent particles and connecting the absorbent particles into a porous absorbent network;
- and
- wherein the ratio by weight of the superabsorbent polymer material to the absorbent particles in the porous absorbent structure is greater than 1:1 and less than 1.5:1 and wherein the porous absorbent structure has a Peak Stretch of at least about 10%.
1 more element
A porous absorbent structure comprising:
- absorbent particles;
- a superabsorbent polymer material substantially coating the absorbent particles and connecting the absorbent particles into a porous absorbent network;
- and
- wherein the ratio by weight of the superabsorbent polymer material to the absorbent particles in the porous absorbent structure is greater than 1:1 and less than 1.5:1 and wherein the porous absorbent structure has a Peak Energy of at least about 150 g/cm.
1 more element
An absorbent article comprising:
- an outer cover adapted to be secured to a person, the outer cover having an inner side;
- a porous absorbent structure comprising
- absorbent particles and
- a superabsorbent polymer material substantially coating the absorbent particles and connecting the particles into a porous network to form an absorbent core that is positioned on the inner side of the outer cover, wherein the ratio by weight of the superabsorbent polymer material to the absorbent particles in the porous absorbent structure is greater than 0.8:1 and less than 1.4:1 and wherein the superabsorbent polymer material has less than about 1000 parts per million residual monoethylenically unsaturated monomer.
1 more element
An absorbent article comprising:
- an outer cover adapted to be secured to a person, the outer cover having an inner side;
- a porous absorbent structure comprising
- absorbent particles and
- a superabsorbent polymer material substantially coating the absorbent particles and connecting the particles into a porous network to form an absorbent core that is positioned on the inner side of the outer cover, wherein the ratio by weight of the superabsorbent polymer material to the absorbent particles in the porous absorbent structure is greater than 0.8:1 and less than 1.4:1 and wherein the porous absorbent structure has a Peak Stretch of at least about 10%.
1 more element
Dependencies are inferred from the claim text.