US 12,331,419 B2
Method for cleaning electrophoretic coating baths, and device therefor
Dominik Pabst, Münster (DE); and Rolf Schulte, Münster (DE)
Assigned to BASF COATINGS GMBH, Muenster (DE)
Appl. No. 17/626,653
Filed by BASF Coatings GmbH, Münster (DE)
PCT Filed Jul. 15, 2020, PCT No. PCT/EP2020/070040
§ 371(c)(1), (2) Date Jan. 12, 2022,
PCT Pub. No. WO2021/009254, PCT Pub. Date Jan. 21, 2021.
Claims priority of application No. 19186475 (EP), filed on Jul. 16, 2019.
Prior Publication US 2022/0243354 A1, Aug. 4, 2022
Int. Cl. C25D 13/24 (2006.01); B01D 33/01 (2006.01); B01D 33/35 (2006.01); B01D 33/80 (2006.01); B01D 35/05 (2006.01); B01D 35/12 (2006.01); B01D 35/14 (2006.01); B01D 35/16 (2006.01); B01D 36/00 (2006.01); B01D 39/16 (2006.01); C25D 13/22 (2006.01)
CPC C25D 13/24 (2013.01) [B01D 33/01 (2013.01); B01D 33/35 (2013.01); B01D 33/802 (2013.01); B01D 33/804 (2013.01); B01D 35/05 (2013.01); B01D 35/12 (2013.01); B01D 35/14 (2013.01); B01D 35/16 (2013.01); B01D 36/00 (2013.01); B01D 39/16 (2013.01); C25D 13/22 (2013.01); B01D 2201/26 (2013.01); B01D 2201/64 (2013.01); B01D 2239/0407 (2013.01); B01D 2239/0428 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for cleaning an electrocoating bath in a continuous facility, where a skid connected to a conveying installation is conveyed through the electrocoating bath, and wherein
(a) the skid comprises a filter medium,
(b) the filter medium is secured on the skid via at least one movable connecting element,
(c) the movable connecting element allows the orientation of the filter medium at the interface between electrocoating bath and air, and
(d) after immersion of the skid into the electrocoating bath, during the conveying of the skid through the electrocoating bath, the filter medium is oriented at the interface between electrocoating bath and air and is drawn along the surface of the electrocoating bath.