Patent ID: 6866935

Claim:
A rubber tile based surface of double layer structure for covering playing, recreation, sport or resident area, wherein the tiles of top layer are made from colored rubber fragments, have higher bulk density than the tiles of bottom layer do, and are adhered on the tiles of bottom layer in a staggered way to cover the seams between the tiles of bottom layer, resulting from the process, comprising: providing colored and non-colored rubber fragments; providing a curable binder; providing a mixer; mixing the colored rubber fragments with the curable binder and molding the mixture to form colored rubber tiles with thickness of 6-25 mm; mixing the non-colored rubber fragments with the curable binder and molding the mixture to form non-colored rubber tiles that have lower density than the colored rubber tiles do; putting the non-colored rubber tiles on substrate of playing, recreation, sport or resident area to form the bottom layer of a double layer structured rubber surfacing; adhering the colored rubber tiles on the bottom layer tiles in a staggered way to cover seams between the bottom layer tiles to form the top layer of the double layer structured rubber surfacing.