Structure of shoe sole

Abstract

A structure of shoe sole is provided, which is a custom-made shoe sole that is formed according to a user's foot sole so as to improve the effects of support and wrapping of the shoe sole. The shoe sole includes an enclosure and a clay-like thermoplastic material. The enclosure includes upper and lower cover layers that are made of a material showing local stretchability and air permeability. The thermoplastic material is received between the upper and lower cover layers and is a thermoplastic mixture in the form of soft ceramic. With the shoe sole placed in a shoe and the shoe put on a user's foot, the thermoplastic material of the shoe sole may get deformed inside the enclosure according to the contour of the user's foot sole, making the shoe sole shaped to completely match the foot sole of the user.

1 . A shoe sole, comprising:
 an enclosure, which comprises a hollow sack having a shape corresponding to an inside contour of a shoe, the enclosure comprising an upper cover layer and a lower cover layer that overlaps each other and are jointed to each other along circumferential edges to form the sack; and   a thermoplastic material, which is received between the upper cover layer and the lower cover layer of the enclosure, the thermoplastic material comprising soft ceramic material that is shapeable in room temperature and settable by being heated;   wherein a top surface of the shoe sole is shapeable to form a three-dimensional configuration exactly corresponding to a wearer's foot sole, the three-dimensional configuration comprising an arch section that corresponds to the arch of the foot sole and a heel wrapping section that corresponds to the heel of the foot sole, whereby the shoe sole is formed to realize full support of and closely wrapping around the foot sole.   
     
     
         2 . The structure of shoe sole according to  claim 1 , wherein the upper and lower cover layers are made of a material showing local stretchability and air permeability. 
     
     
         3 . The structure of shoe sole according to  claim 2 , wherein the material of the upper and lower cover layers is selected from a group consisting of cloth, non-woven fabric, and plastic film. 
     
     
         4 . The structure of shoe sole according to  claim 1 , wherein the circumferential edges of the upper and lower cover layers are jointed by means of ultrasonic waves, adhesives, and sewing. 
     
     
         5 . The structure of shoe sole according to  claim 2 , wherein the circumferential edges of the upper and lower cover layers are jointed by means of ultrasonic waves, adhesives, and sewing. 
     
     
         6 . The structure of shoe sole according to  claim 3 , wherein the circumferential edges of the upper and lower cover layers are jointed by means of ultrasonic waves, adhesives, and sewing. 
     
     
         7 . The structure of shoe sole according to  claim 1 , wherein the thermoplastic material comprises a thermoplastic resin, which is added with a plasticizer and an excipient/filler to form a clay-like soft ceramic material that has the characteristics of being shapeable in room temperature and settable by being heated. 
     
     
         8 . The structure of shoe sole according to  claim 1 , wherein the thermoplastic material comprises a reactive resin, which is added with a constant temperature crosslinker and an excipient/filler to form a clay-like soft ceramic material that has the characteristics of being shapeable in room temperature and settable by being heated to a reaction temperature. 
     
     
         9 . The structure of shoe sole according to  claim 1 , wherein the thermoplastic material comprises an air-drying resin, which is added with an excipient/filler and which, after being taken out of a sealed bag, is put into a shoe to match a user's foot sole and then removed from the shoe to get naturally dried and thus shaped and set.