US 11,931,943 B2
Method for automatically regulating the size of a slot of a nozzle assembly and control and/or regulation system
Waldemar Colell, Lengerich (DE); Bernd-Alexander Groepper, Lengerich (DE); Torsten Schmitz, Lengerich (DE); and Daniel Faustmann, Lengerich (DE)
Assigned to Windmöller & Hölscher KG, Lengerich (DE)
Appl. No. 17/054,964
Filed by Windmöller & Hölscher KG, Lengerich (DE)
PCT Filed May 15, 2019, PCT No. PCT/EP2019/062426
§ 371(c)(1), (2) Date Nov. 12, 2020,
PCT Pub. No. WO2019/219724, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 10 2018 111 763.9 (DE), filed on May 16, 2018.
Prior Publication US 2021/0237327 A1, Aug. 5, 2021
Int. Cl. B29C 48/08 (2019.01); B29C 48/31 (2019.01); B29C 48/92 (2019.01)
CPC B29C 48/08 (2019.02) [B29C 48/313 (2019.02); B29C 48/92 (2019.02); B29C 2948/92628 (2019.02); B29C 2948/92647 (2019.02); B29C 2948/92904 (2019.02); B29C 2948/9298 (2019.02)] 12 Claims
OG exemplary drawing
 
1. 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, wherein a plurality of adjusting elements is arranged at the first nozzle lip, which are coupled to a respective thermoelement, 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,
wherein
at an initial operation of the nozzle assembly for conveying the melt, the adjusting elements for subsequent regulation of the slot size are set uniquely free from play as the initial setting, and wherein a degree of freedom from play of the adjusting elements is set depending on the type of melt.