Shoe outsole

Abstract

A first piece 6, a second piece 8 and a third piece 10 are formed of a rubber composition. These pieces 6, 8 and 10 are formed by means of separate molds, respectively. The pieces 6, 8 and 10 are set in a semivulcanization state. The pieces 6, 8 and 10 are put in a final mold 11. Furthermore, a rubber composition 12 is put in the final mold 11. The rubber composition 12 is used for a body. The first piece 6 has a silver color, the second piece 8 and the third piece 10 have an orange color, and the rubber composition 12 has a black color. The final mold 11 is clamped and is then heated so that the pieces 6, 8 and 10 and the rubber composition 12 are vulcanized and bonded.

What is claimed is:  
     
         1 . A method of manufacturing an outsole comprising the steps of: 
 putting a first polymer composition in a piece forming mold and forming a piece; and    putting, in a final mold, a second polymer composition for a body having a different material or color from that of the first polymer composition and a piece obtained at the piece forming step and bonding the body to the piece.    
     
     
         2 . The method of manufacturing an outsole according to  claim 1 , wherein the piece and the body are formed of a rubber composition and the piece formed at the piece forming step is set in a semivulcanization state, and the body and the piece are bonded by vulcanization at the bonding step.  
     
     
         3 . An outsole comprising a body and a piece to be bonded to the body with an adhesive, wherein the body and the piece have different materials or colors from each other.  
     
     
         4 . The outsole according to  claim 3 , wherein one of the body and the piece is formed of a rubber composition using an acrylonitrile-butadiene copolymer as a base rubber and the other is formed of a rubber composition using, as a base rubber, a rubber other than the acrylonitrile-butadiene copolymer.  
     
     
         5 . The outsole according to  claim 4 , wherein the rubber other than the acrylonitrile-butadiene copolymer is a styrene-butadiene copolymer or polybutadiene.