Improving of Strength around Flow Front Meeting Area in Molded Products by Core Pin Driving Method inside Injection Mold

Core pin driving method in the injection mold was proposed, which core pins were installed runners located on both sides of flow front meeting area, and internal melt generated at part by up-and-down movement pins. In this paper, using a new installation position changed inside cavity, first, simple for estimating caused drive proposed. Then, method, flow, glass fiber orientation, tensile strength fracture modes molded product investigated. As result, area face changes due to forced driven pin, affects joying face, so that changes. described above, molding phenomenon characteristics clarified.