Multilayered cushion for mattress and furniture applications

Abstract

A multilayered cushion according to an exemplary aspect of the present disclosure includes, among other things, a first layer of a first material, a second layer of the first material, and a third layer of a second material between the first and second layers. The second material is stiffer than the first material.

1 . A multilayered cushion, comprising:
 a first layer of a first material;   a second layer of the first material;   a third layer of a second material between the first and second layers, wherein the second material is stiffer than the first material.   
     
     
         2 . The cushion as recited in  claim 1 , wherein the first material has a greater density that the second material. 
     
     
         3 . The cushion as recited in  claim 1 , wherein the first material has a density within a range of 1.5-3.5 lb/ft 3  and wherein the second material has a density within a range of 1.2-6.0 lb/ft 3 . 
     
     
         4 . The cushion as recited in  claim 4 , wherein the second material is denser than the first material. 
     
     
         5 . The cushion as recited in  claim 1 , wherein the first material is provided by a three-dimensional netted layer of a plurality of helically arranged thermoplastic resin filaments, each of the thermoplastic resin filaments being partially thermally bonded to at least one of the other thermoplastic resin filaments such that the thermoplastic resin filaments are randomly entangled with one another. 
     
     
         6 . The cushion as recited in  claim 5 , wherein the second material is polyethylene terephthalate (PET). 
     
     
         7 . The cushion as recited in  claim 6 , wherein the third layer begins at a depth of substantially 2 inches below an upper surface of the first layer. 
     
     
         8 . The cushion as recited in  claim 7 , wherein the first layer has a height of substantially 2 inches, the second layer has a height of substantially 2 inches, and the third layer has a height of substantially 0.5 inches. 
     
     
         9 . The cushion as recited in  claim 6 , wherein the third layer begins at a depth of substantially 1 inch below an upper surface of the first layer. 
     
     
         10 . The cushion as recited in  claim 9 , wherein the first layer has a height of substantially 1 inches, the second layer has a height of substantially 3 inches, and the third layer has a height of substantially 0.5 inches. 
     
     
         11 . The cushion as recited in  claim 6 , wherein the third layer begins at a depth of substantially 3 inches below an upper surface of the first layer. 
     
     
         12 . The cushion as recited in  claim 11 , wherein the first layer has a height of substantially 3 inches, the second layer has a height of substantially 1 inches, and the third layer has a height of substantially 0.5 inches. 
     
     
         13 . A multilayered cushion, comprising:
 a first layer of a first material, wherein the first material is provided by a three-dimensional netted layer of a plurality of helically arranged thermoplastic resin filaments, each of the thermoplastic resin filaments being partially thermally bonded to at least one of the other thermoplastic resin filaments such that the thermoplastic resin filaments are randomly entangled with one another, and wherein the first material has a density within a range of 1.5-3.5 lb/ft 3 ;   a second layer of the first material; and   a third layer of a second material between the first and second layers, wherein the second material is polyethylene terephthalate (PET), and wherein the second material has a density within a range of 1.2-6.0 lb/ft 3  and is stiffer than the first material.   
     
     
         14 . The cushion as recited in  claim 13 , wherein the first material has a density of 2.5 lb/ft 3  and wherein the second material has a density of 3.0 lb/ft 3 . 
     
     
         15 . The cushion as recited in  claim 14 , wherein the third layer begins at a depth of substantially 2 inches below an upper surface of the first layer. 
     
     
         16 . The cushion as recited in  claim 14 , wherein the first layer has a height of substantially 2 inches, the second layer has a height of substantially 2 inches, and the third layer has a height of substantially 0.5 inches.