Development of a new method for multi component injection moulding

The objective of the new method is to develop an innovative multi component moulding with one die, which is specially applicabie in automobile industry. The new concept multi component moulding system of this research is the secondary cavity for secondary material which is formed by the moving of the core. Recently, this method has faced with problem of flash, short shot in filling and also gluing when manufacturing multi component of car door-trim with electrical core-back co-injection machine.