Blending of natural rubber with thermoplastic is widely practised as the resultant blend exhibit properties typical of rubbery materials. The properties of the blends however is affected by the methods of preparation. In this paper emphasis has been laid on the method of preparations and its bearing on the final properties like tensile strength, modulus, elongation at break and hardness properties. Properties with respect to the method of preparations for thermoplastic such as polypropylene high density polyethylene and polyvinyl chloride were investigated. Presented also the effect of sulphur vulcanisatian on these blends.