Patent ID: 11999091

Abstract:
The invention relates to a method for automatically regulating the size of a nozzle discharge slot of a nozzle assembly, wherein the nozzle assembly comprises a first and a second nozzle lip and a nozzle discharge slot arranged between the nozzle lips for setting in a controlled manner a thickness profile of a conveyable melt. A plurality of adjusting elements, in particular a plurality of adjusting pins, which are coupled to a respective thermoelement, is arranged at the first nozzle lip, wherein the thermoelements are controllable by the regulation in such a way that the slot adjustment can be realized by the action of a mechanical force from the respective adjusting element on the first nozzle lip as a result of an expansion or contraction of the thermoelements. At least one clamping blade is respectively arranged in a right-hand and left-hand edge region of the nozzle assembly, wherein the width of the nozzle discharge slot can be variably set. The method comprises the following steps, which are carried out automatically for adjusting the width of the nozzle discharge slot and for clamping the adjusting elements: