Patent ID: 6695999
Filing Date: 2004-02-24
Classification: B29C,E04F,H05F,Y10T

Abstract:
A method for producing a floor covering having first particles of a polymer material which are surrounded with electrically conductive second particles and compressed in an intermediate space between top and bottom sides of the floor covering, the floor covering having at least one cut surface and the electrically conductive second particles forming conductive oaths which connect the top side and the bottom side of the floor covering in an electrically conductive way, wherein the first particles are made of at least one granulated elastomer material and form a matrix in which the second particles form electrically conductive paths along particle boundaries of the first particles, comprising:a) granulating at least one unvulcanized elastomer mixture, b) passing granulated particles through sieves having a mesh width of 2 to 8 mm and coating the granulated particles with electrically conductive second particles, c) molding, compressing and cross-linking the particles in a first compression procedure at a specific pressure of 5 to 200 bar and a temperature of 60Â° to 120Â° C., d) splitting the molded material into strips or slabs, and e) vulcanizing the molded material in a second compression procedure.