date:Jan 27, 2015
h to wall thickness (F/W) denotes the level of difficulty involved, which increases as the ratio rises. For the 44 oz cup, the ratio is 300:1. It requires a machine with corresponding injection performance in order to be able to fill the cavity quickly. In addition, any slight core shift, i.e. the lack of concentricity between the mold (= outer contour of the cup) and core (= inner contour), has a direct impact on product quality. For this purpose, Netstal has devised a best practice known as th