Static electricity removing tool for footwear bottom, static electricity removing footwear bottom and electricity removing method of footwear bottom

Abstract

A static electricity removing tool for a footwear bottom includes a basal plate having in its inner face an attaching layer for attaching to a ground contacting face of a footwear bottom, a static electricity removing sheet in which a corona discharge is made of an electricity removing material, and a concave portion deeper than a thickness of the static electricity removing sheet, formed in a ground contacting face of the basal plate. Furthermore, a step difference more concave than the ground contacting face of the basal plate is formed in an outer face of the static electricity removing sheet by attaching the static electricity removing sheet to a bottom face of the concave portion by bonding.

What is claimed is:  
     
         1 . A static electricity removing tool for footwear bottom, comprising: 
 a basal plate having in its inner face an attaching means for a ground contacting face of a footwear bottom;    a static electricity removing sheet in which a corona discharge is made an electricity removing means;    a concave portion deeper than a thickness of the static electricity removing sheet, formed in a ground contacting face of the basal plate; and    a step difference concaved than the ground contacting face of the basal plate, which is formed in an outer face of the static electricity removing sheet by attaching the static electricity removing sheet to a bottom face of the concave portion through a bonding means.    
     
     
         2 . A static electricity removing tool for footwear bottom according to  claim 1 , wherein a sheet covering piece is formed in a concave portion edge of the basal plate, and an outer face end portion of the static electricity removing sheet is covered by the sheet covering piece.  
     
     
         3 . A static electricity removing footwear bottom, comprising: 
 a concave portion deeper than a thickness of a static electricity removing sheet in which a corona discharge is made an electricity removing means in a ground contacting face of a footwear bottom;    a step difference concaved than the ground contacting face of the footwear bottom, which is formed in an outer face of the static electricity removing sheet by attaching the static electricity removing sheet to a bottom face of the concave portion through a bonding means.    
     
     
         4 . A static electricity removing footwear bottom according to  claim 3 , wherein a sheet covering piece is formed in a concave portion edge of the footwear bottom, and an outer face end portion of the static electricity removing sheet is covered by the sheet covering piece.  
     
     
         5 . An electricity removing method of footwear bottom, wherein by attaching to a groove previously formed in a ground contacting face of a footwear bottom a static electricity removing sheet which is thinner than a depth of the groove and in which a corona discharge is made en electricity removing means, there is brought about a state that an outer face of the static electricity removing sheet is concaved than the ground contacting face.