Injection-molded plastic wing for motor vehicle is made by injecting material from feed points towards constriction zone

摘要

Manufacturing injection-molded plastic wing (ASL) with cut-off edge (BT) linked to rest of wing by constriction zone (ZST) consists of filling mould cavity with injected material at constant flow rate through number of feed points (SE1, SE2) towards constriction zone. The flow rate is kept at constant level by varying thickness of constriction zone so it is minimal opposite feed points and maximal between them. Manufacturing an injection-molded plastic wing (ASL) with a cut-off edge (BT) linked to the rest of the wing by a constriction zone (ZST) consists of filling the mould cavity with the injected material at a constant flow rate through a number of feed points (SE1, SE2) towards the constriction zone. The flow rate is kept at a constant level by varying the thickness of the constriction zone so it is minimal opposite the feed points and maximal between them.