Disposable absorbent article

Abstract

A disposable absorbent article is provided having an absorbent core located in a chassis and including absorbent particulate polymer material defining at least one cavity. The absorbent core may be substantially cellulose free or comprise a combination of particulate absorbent polymer material and wood pulp. Methods for making such an absorbent core and corresponding disposable absorbent article are also disclosed.

What is claimed is: 
     
         1 . An absorbent article, comprising:
 a. a topsheet;   b. a backsheet;   c. an absorbent core disposed between the topsheet and the backsheet, the absorbent core comprising a first substrate, a second substrate, and absorbent particulate polymer material arranged between the first substrate and the second substrate; and   d. an acquisition layer disposed between the absorbent core and the topsheet;   e. wherein the absorbent core comprises a longitudinally-extending cavity comprising a cavity volume;   f. wherein the second substrate deflects into the cavity and is adhered to the first substrate within the cavity;   g. wherein the cavity is substantially free of the absorbent particulate polymer material;   h. wherein the cavity comprises a channel extending in a direction substantially parallel to a longitudinal axis of the absorbent article; and   i. wherein the absorbent core exhibits a wet immobilization of more than 50% according to the Wet Immobilization Test described herein.   
     
     
         2 . The absorbent article of  claim 1 , wherein the second substrate is adhered to the first substrate within the cavity via glue. 
     
     
         3 . The absorbent article of  claim 1 , wherein the second substrate is adhered to the first substrate within the cavity via thermoplastic material. 
     
     
         4 . The absorbent article of  claim 1 , wherein the second substrate is adhered to the first substrate within the cavity via heat and/or pressure. 
     
     
         5 . The absorbent article of  claim 1 , wherein the absorbent core exhibits a wet immobilization of more than 60% according to the Wet Immobilization Test described herein. 
     
     
         6 . The absorbent article of  claim 1 , wherein the absorbent core exhibits a wet immobilization of more than 70% according to the Wet Immobilization Test described herein. 
     
     
         7 . The absorbent article of  claim 1 , wherein the absorbent core exhibits a wet immobilization of more than 80% according to the Wet Immobilization Test described herein. 
     
     
         8 . The absorbent article of  claim 1 , wherein the absorbent core exhibits a wet immobilization of more than 90% according to the Wet Immobilization Test described herein. 
     
     
         9 . An absorbent article, comprising:
 a. a topsheet;   b. a backsheet;   c. an absorbent core disposed between the topsheet and the backsheet, the absorbent core comprising a first substrate, a second substrate, and absorbent particulate polymer material and wood pulp arranged between the first substrate and the second substrate; and   d. an acquisition layer disposed between the absorbent core and the topsheet;   e. wherein the absorbent core comprises a longitudinally-extending cavity comprising a cavity volume;   f. wherein the second substrate deflects into the cavity and is adhered to the first substrate within the cavity;   g. wherein the cavity is substantially free of the absorbent particulate polymer material;   h. wherein the cavity comprises a channel extending in a direction substantially parallel to a longitudinal axis of the absorbent article; and   i. wherein the absorbent core exhibits a wet immobilization of more than 50% according to the Wet Immobilization Test described herein.   
     
     
         10 . The absorbent article of  claim 9 , wherein the second substrate is adhered to the first substrate within the cavity via glue. 
     
     
         11 . The absorbent article of  claim 9 , wherein the second substrate is adhered to the first substrate within the cavity via thermoplastic material. 
     
     
         12 . The absorbent article of  claim 9 , wherein the second substrate is adhered to the first substrate within the cavity via heat and/or pressure. 
     
     
         13 . The absorbent article of  claim 9 , wherein the absorbent core exhibits a wet immobilization of more than 60% according to the Wet Immobilization Test described herein. 
     
     
         14 . The absorbent article of  claim 9 , wherein the absorbent core exhibits a wet immobilization of more than 70% according to the Wet Immobilization Test described herein. 
     
     
         15 . The absorbent article of  claim 9 , wherein the absorbent core exhibits a wet immobilization of more than 80% according to the Wet Immobilization Test described herein. 
     
     
         16 . The absorbent article of  claim 9 , wherein the absorbent core exhibits a wet immobilization of more than 90% according to the Wet Immobilization Test described herein. 
     
     
         17 . An absorbent article, comprising:
 a. a topsheet;   b. a backsheet;   c. an absorbent core disposed between the topsheet and the backsheet, the absorbent core comprising a first substrate, a second substrate, and absorbent particulate polymer material and wood pulp arranged between the first substrate and the second substrate; and   d. an acquisition layer disposed between the absorbent core and the topsheet;   e. wherein the absorbent core comprises a longitudinally-extending cavity comprising a cavity volume;   f. wherein the second substrate deflects into the cavity and is adhered to the first substrate within the cavity;   g. wherein the cavity is substantially free of the absorbent particulate polymer material;   h. wherein the cavity comprises a first channel extending in a first direction and second channel extending in a second direction that is different from the first direction; and   i. wherein the absorbent core exhibits a wet immobilization of more than 50% according to the Wet Immobilization Test described herein.   
     
     
         18 . The absorbent article of  claim 17 , wherein the absorbent core further comprises wood pulp. 
     
     
         19 . The absorbent article of  claim 17 , wherein the absorbent core exhibits a wet immobilization of more than 80% according to the Wet Immobilization Test described herein. 
     
     
         20 . The absorbent article of  claim 17 , wherein the absorbent core exhibits a wet immobilization of more than 90% according to the Wet Immobilization Test described herein.