Multilayered insole for footwear

Abstract

A multilayered insole for footwear comprises a base layer having a first thickness, an intermediate layer having a second thickness and adhered to an upper surface of the base layer, and an upper layer having a third thickness and adhered to a free surface of the intermediate layer. The base and upper layers are both made of a first material formed by foamable polymeric resin compositions. The intermediate layer is made of a second material formed by foamable polymeric resin compositions mixed with recycled foamable polymeric materials. A sum of the first thickness of the base layer and the second thickness of said intermediate layer is larger than 0.5 mm. The third thickness of the upper layer can be from 2 mm to 5 mm.

1 . A multilayered insole for footwear, comprising
 a base layer having a first thickness;   an intermediate layer having a second thickness and adhered to an upper surface of said basic layer; and   an upper layer having a third thickness and adhered to a free surface of an intermediate layer;   said base and upper layers being made of a first foamable material formed by foamable polymeric resin compositions;   said intermediate layer being made of a second foamable material formed by foamable polymeric resin compositions mixed with recycled foamable polymeric materials;   a sum of said first thickness of said base layer and said second thickness of said intermediate layer being larger than 0.5 mm; and   said third thickness of said upper layer being 2 mm to 5 mm.   
     
     
         2 . The insole of  claim 1 , wherein the sum of said first thickness of said base layer and said second thickness of said intermediate layer is larger than 0.5 mm but smaller than 4 mm. 
     
     
         3 . The insole of  claim 1 , wherein said first thickness of said base layer is smaller than said second thickness of said intermediate layer. 
     
     
         4 . The insole of  claim 1 , wherein said third thickness of said upper layer is larger than the sum of said first thickness of said base layer and said second thickness of said intermediate layer. 
     
     
         5 . The insole of  claim 1 , wherein said third thickness of said upper layer is 4 mm. 
     
     
         6 . The insole of  claim 1 , further comprising a top layer made of fabrics and adhered to a free surface of said upper layer.