Improving Shear Induced Imbalance in Hot Runner Systems: Opti-flo Hot Runner Manifold Systems with MeltFlipper Technology

摘要

Shear-induced flow imbalance is recognized as contributing to a number of molding problems in multicavity molds. Uneven cavity filling is responsible for voids, core shift, inconsistent dimensional properties and other part defects. It is obvious that if the process starts out incorrectly, obtaining a repeatable, optimum condition is nearly, if not completely, impossible. A patented system of melt manipulation (MeltFlipper) was introduced to the market several years ago that corrects the imbalance condition in cold runner molds. Recently, this technology has been made available to hot runner systems. The hot runner manifold construction incorporates the patented MeltFlipper melt rotation design.