이색 사출성형의 급속가열과 냉각의 영향

The Effects of Rapid Heating and Cooling in Two Color Injection Molding

The two color injection molding is recently used for production of IT parts. By this injection molding technology, the molded part in the first molding process is welded to the part molded by the second or third molding process into the final molded product. In this study, the rapid heat cycle molding system is applied to the two color injection molding and then the influence of the rapid heating and cooling cycle on the over injection molding was investigated by injection experiments. The injection trouble, weld line, flash, generated in the over injection molded parts was also investigated and commented upon. The rapid heating of the over injection mold can increase the time of heating and cooling and hence is mainly responsible for the increase of the two color injection molding cycle.