Dvorak and Traub
Multi-color floor covering by injection and punch-pressing processes with thermoplastic elastomer base
 A floor covering with at least two colors using thermoplastics elastomers as its base material wherein the first base material is formed and set in the first work station of a multistation rotary injection molding machine having a turntable to transfer the first finished material to the second work station for punching, then to the third work station where a second base material with different color is melted and filled up the holes and bottom parts of the first finished material, at last the copolymers with at least two colors is being unloaded, calendered and extruded to form a flat and flexible floor covering. 
Y Y B B Y Y B B B Y B B
Y10T Y10T B32B B32B Y10T Y10T B32B B29C B29C Y10T B32B B32B
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Hui-Mei
Chen