To increase the domestic usage of natural rubber (NR), Thai government encourage more rubber products in various applications such as rubber products for transportation (rubber milestone, rubber barrier).  This research aims to use natural rubber as one of the raw materials for traffic cones.  Normally, traffic cones are made from various types of thermoplastic such as Ethylene Vinyl Acetate Copolymer (EVA), Polyethylene (PE), Polyvinyl chloride (PVC).   In this work, traffic cones that are made from thermoplastic natural rubber (TPNR), which are blends of natural rubber and thermoplastic that are dynamically vulcanized, have more rubberlike properties than thermoplastic traffic cones while still being processed and recyclable like thermoplastics.

Thermoplastic natural rubber was compounded by using Industrial-scale twin screw extruder and then was injection-molded into thermoplastic natural rubber traffic cones.  Thermoplastic natural rubber traffic cones are produced in the industrial scale, tested and commercialized at present.