Method for automatically regulating the size of a slot of a nozzle assembly and control and/or regulation system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11738494
APP PUB NO 20210213666A1
SERIAL NO

17055371

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Abstract

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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. An adjustment of the adjusting elements is carried out automatically based on measurement signals of at least one sensor, wherein the sensor is designed and/or arranged at the nozzle assembly in such a way that conclusions can be drawn about the thickness profile of the melt. The right-hand and left-hand edge region of the melt is monitored by means of the sensor and is controlled or regulated in such a way that the respective edge region is set by adjusting the adjusting elements depending on the material, in particular viscosity and/or viscoelasticity, and/or quality criteria and/or a conveying speed. The invention further relates to a control and/or regulation system.

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Patent Owner(s)

Patent OwnerAddress
WINDMOLLER & HOLSCHER KGMÜNSTERSTRASSE 50 LENGERICH 49525

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Colell, Waldemar Lengerich, DE 14 15
Faustmann, Daniel Lengerich, DE 7 15
Groepper, Bernd-Alexander Lengerich, DE 13 16
Schmitz, Torsten Lengerich, DE 24 25

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