6. Corner exit mold
products for ribs, lugs protruding, deep groove ... or beveled surface, then we should design the bevelled corners of the mold open way to ensure that the product will exit the cavity is easy .
the value depends on the beveled corner of the plastic shrinkage and bevelled height. Normally this value is between -3 ° 0:25 ° per side. However, for those products should taper from 5mm height or less, we can not be created because the friction mold drainage angle between the surface and the mold product is not great due to the surface treatment during cooling tiinh product should be pushed out easily.
When not escape the mold design or design angle not stand the friction between the surface and the mold product will be great. When puzzle product will get stuck in the mold or if it is pushed out matter, the product surface will also fail, too big push by key forces do Thun surface.
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