The overlap gate,which is of general rectangular form,is machined into the plain mould plate (Figure 4.19),in such a way that it bridges the gap between the end of the runner and the end wall of the impression(c).The general arrangement is shown ar (d) which gives a local section through the mould at relevant point.
The gate may be used fo all the common moulding material apart from rigid PVC.The gate,being attached to the moudlign surface,does require more careful removal and finishing than for edge gates.