Balanced Filling is Critical For Holding Molding Tolerances

摘要

Let's look at our two cavities during filling and packing, with this viscosity curve data to help us "see" from the plastic's perspective. During filling of each cavity, the shear rate is high, viscosity is low (easy flowing), and all is fine. However, if we freeze- fra me the situation at the instant of switchover from first to second stage (packing), we see cavity "A" is full and cavity "B" is short.