Electric properties of plastics testing device - measures breakdown behaviour between two opposed electrodes which may be advanced towards each other

摘要

Two cutting edges crossing each other, e.g. razor blades, are used as electrodes; they are at a right angle to each other. An injection moulding tool consists of two parts, each with a slot for the electrode blade holding over a part of its width, opening in opposite directions; filling chambers are provided at each electrode, communicating with each other; a pouring chamber is in the second tool part; a safety device is provided in the second electrode holder in the path of casting flow.