Mattresses

Abstract

Mattresses for cots and infant beds include a mattress core having first and second faces. Each face is overlayered by a comfort layer and a cover layer. The mattress core includes a relatively firm core layer and a relatively soft core layer. Suitably, the firm core layer includes an array of helical springs or a foamed polymeric or fibrous material.

1 . An infant mattress comprising a mattress core having first and second faces each face overlayered by a comfort layer and a cover layer; wherein the mattress core comprises a relatively firm core layer and a relatively soft core layer. 
     
     
         2 . A mattress as claimed in  claim 1  wherein the firm core layer comprises an array of helical springs. 
     
     
         3 . A mattress as claimed in  claim 2  wherein the firm core layer comprises an array of open coil springs, preferably arranged at a density of at least 87 springs per square metre. 
     
     
         4 . A mattress as claimed in  claim 2  wherein the firm core layer comprises an array of individually pocketed springs, preferably, the springs are arranged in a density of at least 169 springs per square metre. 
     
     
         5 . A mattress as claimed in  claim 2  wherein the array of springs of the firm core layer is further provided with a surround or border of a compressible material, suitably a foamed polymeric material. 
     
     
         6 . A mattress as claimed in  claim 1  wherein the firm core layer comprises a foamed polymeric material or fibrous material. 
     
     
         7 . A mattress as claimed in  claim 1  wherein the soft core layer is formed of a foamed polymeric material; a polymeric fibrous material; or a natural material, such as wool. 
     
     
         8 . A mattress as claimed in  claim 1  wherein at least the firm core layer is overlayered on both faces thereof by a boundary layer. 
     
     
         9 . A mattress as claimed in  claim 8  wherein each said boundary layer is formed of a fibrous layer material; preferably a non-woven fibrous layer material. 
     
     
         10 . A mattress as claimed in  claim 9  wherein the boundary layer is formed of a felt or polypropylene material. 
     
     
         11 . A mattress as claimed in  claim 1  wherein the comfort layer is formed of a foamed polymeric material; a polymeric fibrous material or a natural material such as woven or non-woven wool. 
     
     
         12 . A mattress as claimed in  claim 1  having a depth of 15 cm or less in a middle portion of the mattress.