Simultaneous Transcription Molding From Two Different Directions by Ultra-High-Speed Injection Molding Technology

Abstract

An injection mold for the simultaneous transcription molding from two different directions was successively developed. In this mold, the closings of the both sides of L–shaped cavity could be operated independently by introducing a hydraulic cylinder to the second cavity side. Using stamper with prism pattern of 25um–groove pitch, molding experiments were carried out by an ultra–high–speed injection molding machine, and these results proved that transcriptions in the both sides of L–shape were evidently improved by ultra–high–speed injection.