PREPARATION AND CHARACTERIZATION OF ETHYLENE VINYL ACETATE/POLYBUTADIENE RUBBER/NATURAL RUBBER (EVA/BR/NR) BASED THERMOPLASTIC ELASTOMER FOR FOOTWEAR APPLICATION

Plastic Engineering

To development of the effective thermoplastic elastomer from ethylene vinyl acetate (18% VA), polybutadiene rubber (cisamer 1220) and natural rubber (RSS 3) material for footwear application. Virgin EVA has poor set, tear and wear properties. BR enhance the lower tension rate, higher tear strength, higher abrasion resistance and low hardness and natural rubber will make economic which is necessary for the footwear application. EVA/BR/NR microcellular foam shows overall properties comparable with commercial EVA/BR microcellular foam. The main uses of this application in the shoes inner sole or the outer-sole of the shoes and also for flip flop and hawaii chappal. This TPE can give the flexible product and reduce the slippage on the wet floor or ground which is the essence of the footwear application. The blends are prepared at 110°C and 25 rpm by batch process in a two roll mill. After the mixing were done compression will takes place for the final foamed sheet with good mechanical properties.

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