• 14:15-14:40
  • Brabantzaal

Fine adjustment of manifold balancing by means of melt rotation

  • Volker Müller
  • INCOE International Europe

In injection molding with multi-cavity molds, shear-induced viscosity differences in the flow channels of manifold systems can result in the various mold cavities producing molded parts with different properties – in spite of natural balancing and optimum mold quality. This situation can be remedied with a fine adjustment of the melt flows, achieved using hot runner manifolds that are equipped with melt rotation inserts. By means of melt rotation all mold cavities are fed with homogeneous melt flows that have the same symmetrical shear profile resulting in parts of the same high quality from all the mold cavities.