Insole for shoes

Abstract

An inner sole ( 1 ) has a base sole ( 2 ) which consists of a foamed material layer. A cover layer ( 20 ) is deposited over the material layer ( 10, 30 ). Whilst the foamed material layer ( 10, 30 ) has a hardness of preferably between 10° and 20° Shore A, by way of the cover layer ( 20 ) one achieves an inner sole ( 1 ) which as a whole has a hardness between 30° and 40° Shore A. The foamed material layer may be of latex and/or polyurethane foam. The inner sole with the material pairing shown here provides for excellent massage or acupressure effects and may be designed for the targetted effect on individual body organs or regions, without effecting an over-stimulation.

1 . An inner sole ( 1 ) with a flat base sole ( 2 ) of elastic foam material which corresponds to the outline of a shoe and which on its upper side in the region of reflex zones of the foot sole comprises several integrally formed projections ( 3 ), likewise consisting of the same elastic foam material, characterised in that the sole is integrally manufactured out of a foamed material layer ( 10 ,  30 ) which has a hardness of below 25° Shore A, in particular between 10° and 20° and is rigidly provided with a smooth cover layer ( 20 ) so that the hardness of the laminated inner sole has a hardness of over 25° Shore A, in particular between 30° and 40° Shore A.  
     
     
         2 . An inner sole according to  claim 1 , characterised in that the foamed material layer ( 10 ,  30 ) is manufactured of latex, polyurethane foam or texon®.  
     
     
         3 . An inner sole according to  claim 1 , characterised in that the foamed material layer ( 10 ,  30 ) is manufactured two-ply of two different materials.  
     
     
         4 . An inner sole according to  claim 3 , characterised in that the upper of the two plies ( 10 ) is manufactured of latex and the lower ply of polyurethane foam ( 30 ).  
     
     
         5 . An inner sole according to  claim 1 , characterised in that the cover layer ( 20 ) is manufactured of leather, split leather, breathing-active plastic material or textile material.  
     
     
         6 . An inner sole according to claims  1 , characterised in that the thickness of the foamed material layer ( 10 ,  30 ) in the region without projections ( 3 ) corresponds at least twice or maximally four times the thickness of the cover layer ( 20 ).  
     
     
         7 . An inner sole according to  claim 1 , characterised in that height of the projections ( 3 ) corresponds to once or twice the material layer ( 10 ,  30 ) outside the regions of the projections.  
     
     
         8 . An inner sole according to  claim 1 , characterised in that the thickness of the material layer ( 10 ,  30 ) in the region outside the projections ( 3 ) is between 1.5 mm and 4.0 mm.  
     
     
         9 . An inner sole according to  claim 1 , characterised in that there are present flat projections which have a lateral inclination ( 4 ) and a central level surface ( 5 ).  
     
     
         10 . An inner sole according to  claim 1 , characterised in that there is present at least one linearly ( 6 ) extending projection with an apex line at a constant height.  
     
     
         11 . An inner sole according to  claim 1 , characterised in that the layer foamed of polyurethane ( 30 ) contains anti-bacterial and anti-fungicidal active ingredients.  
     
     
         12 . An inner sole according to  claim 11 , characterised in that the layer foamed of polyurethane consists of “Sanitized® polyurethane 99-45” (description Clariant Huningue SA, France).  
     
     
         13 . An inner sole according to  claim 1 , characterised in that the projections ( 3 ) are arranged in such formations that a targeted influencing of various reflex zones for an effect only on selected organs or body regions may be achieved (FIGS. 1, 2 and  6 - 11 ).