US 12,403,503 B1
Method and control system for applying a polymer coating material to a wire using a coating apparatus
Filippo Gionata Diego Veglia, Turin (IT); Piero Degasperi, Trento (IT); and Francesco Taiariol, San Giusto Canavese (IT)
Assigned to Tau ACT GmbH, Berlin (DE)
Filed by Tau ACT GmbH, Berlin (DE)
Filed on Jan. 7, 2025, as Appl. No. 19/012,636.
Application 19/012,636 is a continuation in part of application No. 16/591,262, filed on Oct. 2, 2019.
Int. Cl. B05D 7/20 (2006.01); B05D 1/26 (2006.01); C23D 5/00 (2006.01); C23D 5/02 (2006.01)
CPC B05D 7/20 (2013.01) [B05D 1/265 (2013.01); C23D 5/005 (2013.01); C23D 5/02 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of applying a polymer coating material to a wire using a coating apparatus, the method comprising:
receiving coating material input to the coating apparatus at a first end of an elongate injection channel of the coating apparatus and supplying the received coating material to a coating chamber that is arranged at a second end of the injection channel, the coating chamber comprising a cylindrical central section for receiving coating material from the injection channel and a nozzle that tapers conically from a maximum diameter at a junction with the cylindrical central section to a minimum diameter at an outlet port;
heating the coating material in the injection channel to a first temperature;
pressurizing the coating material in the injection channel such that the coating material flows into the coating chamber;
heating the coating material to a second temperature, higher than the first temperature, such that the coating material has an appropriate viscosity for being applied to the wire; and
feeding wire through the coating chamber of the coating apparatus so as to apply the coating material to the wire in the coating chamber through the movement of the wire through the coating chamber;
adjusting the pressure exerted on the coating material in the injection channel as a function of the quantity of the coating material contained in the coating chamber; and
removing pressure from the coating material contained in the injection channel if the quantity of coating material contained in the coating chamber is higher than a predetermined threshold.