Absorbent structure containing corrugated web layers

Claim 2

An absorbent product comprising a first fibrous layer of synthetic resilient fibers in the form of a nonwoven web and a second layer substantially united to said first layer, said second layer having a higher capillary pressure than said first layer to provide preferential attraction and wicking of liquid in said second layer, said layers being corrugated to provide a corrugated structure, said corrugated structure being stabilized to retain its corrugations when wet.

Claim 3

The absorbent structure of claim 1 wherein the nonwoven web is polyester.

Claim 4

The absorbent structure of claim 1 wherein the nonwoven web is made from bicomponent fibers.

Claim 5

The absorbent structure of claim 1 wherein the second layer is chemically delignified wood pulp fibers.

Claim 6

The absorbent structure of claim 1 wherein the second layer is peat moss.

Claim 7

The absorbent structure of claim 1 wherein the second layer is acrylic fibers.

Claim 8

An absorbent product comprising a first layer and a second layer, said second layer being substantially united to said first layer and substantially coextensive therewith, said first layer comprising a fibrous web of synthetic resilient fibers said web having a dry bulk of at least about 10 cc per gram and a weight less than about 4 ounces per square yard, said second layer comprising frictionally engaged hydrophilic particles selected from the group consisting of cellulosic fibers, peat moss, rayon fibers, acrylic fibers and mixtures thereof, said first and second layers being corrugated and stabilized to retain the corrugated form even when wet.

Claim 9

An absorbent product comprising a first layer and a second layer, said second layer being substantially united to said first layer and substantially coextensive therewith, said first layer comprising a fibrous web of synthetic resilient fibers said web having a dry bulk of at least about 10 cc per gram and a weight less than about 4 ounces per square yard, said second layer comprising frictionally engaged hydrophilic particles selected from the group consisting of cellulosic fibers, peat moss, rayon fibers, acrylic fibers and mixtures thereof, said first and second layers being corrugated and stabilized to retain the corrugated form even when wet.

Claim 10

The absorbent product of claim 7 wherein said first fibrous layer is a nonwoven fibrous web.

Claim 11

The absorbent product of claim 8 wherein said nonwoven fibrous web is of polyester fibers.

Claim 12

The absorbent product of claim 7 wherein said second layer is chemically delignified wood pulp fibers.

Claim 13

The absorbent product of claim 7 wherein said second layer is peat moss.

Claim 14

The absorbent product of claim 7 wherein said second layer is rayon fibers.

Claim 15

A disposable diaper containing an absorbent pad wherein said absorbent pad is an absorbent product comprising a first fibrous layer of synthetic resilient fibers in the form of a nonwoven web and a second layer substantially united to said first layer, said second layer having a higher capillary pressure than said first layer to provide preferential attraction and wicking of liquid in said second layer, said layers being corrugated to provide a corrugated structure, said corrugated structure being stabilized to retain its corrugations when wet.

Claim 16

A disposable diaper containing an absorbent pad wherein said absorbent pad is an absorbent product comprising a first fibrous layer of synthetic resilient fibers in the form of a nonwoven web and a second layer substantially united to said first layer, said second layer having a higher capillary pressure than said first layer to provide preferential attraction and wicking of liquid in said second layer, said layers being corrugated to provide a corrugated structure, said corrugated structure being stabilized to retain its corrugations when wet.

Claim 17

The disposable diaper of claim 13 wherein said absorbent structure is comprised of a first layer nonwoven web of polyester fibers and a second layer of chemically delignified wood pulp fibers.

Claim 18

A disposable diaper containing an absorbent pad wherein said absorbent pad is an absorbent structure comprising a first layer and a second layer, said second layer being substantially united to said first layer and substantially coextensive therewith, said first layer comprising a fibrous web of synthetic resilient fibers said web having a dry bulk of at least about 10 cc per gram and a weight less than about 4 ounces per square yard, said second layer comprising frictionally engaged particles selected from the group consisting of cellulosic fibers, peat moss, rayon fibers, acrylic fibers, and mixtures thereof, said first and second layers after being united being corrugated and stabilized to retain the corrugated form.

Claim 19

A disposable diaper containing an absorbent pad wherein said absorbent pad is an absorbent structure comprising a first layer and a second layer, said second layer being substantially united to said first layer and substantially coextensive therewith, said first layer comprising a fibrous web of synthetic resilient fibers said web having a dry bulk of at least about 10 cc per gram and a weight less than about 4 ounces per square yard, said second layer comprising frictionally engaged particles selected from the group consisting of cellulosic fibers, peat moss, rayon fibers, acrylic fibers, and mixtures thereof, said first and second layers after being united being corrugated and stabilized to retain the corrugated form.

Claim 20

A sanitary napkin comprising an absorbent structure partially encompassed by a liquid barrier with a moisture permeable overwrap, said absorbent structure being an absorbent product comprising a first fibrous layer of synthetic resilient fibers in the form of a nonwoven web and a second layer substantially united to said first layer, said second layer having a higher capillary pressure than said first layer to provide preferential attraction and wicking of liquid in said second layer, said layers being corrugated to provide a corrugated structure, said corrugated structure being stabilized to retain its corrugating when wet.

Claim 21

A sanitary napkin comprising an absorbent structure partially encompassed by a liquid barrier with a moisture permeable overwrap, said absorbent structure being an absorbent product comprising a first fibrous layer of synthetic resilient fibers in the form of a nonwoven web and a second layer substantially united to said first layer, said second layer having a higher capillary pressure than said first layer to provide preferential attraction and wicking of liquid in said second layer, said layers being corrugated to provide a corrugated structure, said corrugated structure being stabilized to retain its corrugating when wet.

Claim 22

A sanitary napkin containing an absorbent structure, said absorbent structure being an absorbent product comprising a first layer and a second layer, said second layer being substantially united to said first layer and substantially coextensive therewith, said first layer comprising a fibrous web of synthetic resilient fibers said web having a dry bulk of at least about 10 cc per gram and weight less than about 4 ounces per square yard, said second layer comprising frictionally engaged particles selected from the group consisting of cellulosic fibers, peat moss, rayon fibers, acrylic fibers, and mixtures thereof, said first and second layers after being united being corrugated and stabilized to retain the corrugated form.

Claim 23

A sanitary napkin containing an absorbent structure, said absorbent structure being an absorbent product comprising a first layer and a second layer, said second layer being substantially united to said first layer and substantially coextensive therewith, said first layer comprising a fibrous web of synthetic resilient fibers said web having a dry bulk of at least about 10 cc per gram and weight less than about 4 ounces per square yard, said second layer comprising frictionally engaged particles selected from the group consisting of cellulosic fibers, peat moss, rayon fibers, acrylic fibers, and mixtures thereof, said first and second layers after being united being corrugated and stabilized to retain the corrugated form.