Design and fabrication for shell helmet mould

Abstract

Shell helmet manufacturing industry using Acrylonitrile Butadiene Styrene (ABS) and Polycarbonate (PC) is so popular for basic usage by using injection molding method in its production. ABS and PC are a synthetic material produced through chemical reactions which are rarely found, expensive and needed to go through heating and high pressurizing to use them. Material, design and development technique towards shell helmet manufacturing still hasn't changed along the century and it still depends on synthetic material to produce it. From theses research and development of motorcycle helmet shell using waste material such as coconut fibers. He used molding material from plaster of Paris (POP) but many problems arise such as unsuitable molding design.