US 11,833,540 B2
Curtain applicator
Tadashi Sasa, Tokyo (JP); Toshihiro Katano, Motomiya (JP); Akio Hirano, Chiba (JP); Hiroyuki Kohno, Motomiya (JP); Christoph Henninger, Heidenheim (DE); and Uwe Froehlich, Neu-Ulm (DE)
Assigned to Voith Patent GmbH, Heidenheim (DE)
Appl. No. 16/305,091
Filed by VOITH PATENT GMBH, Heidenheim (DE)
PCT Filed May 11, 2017, PCT No. PCT/EP2017/061287
§ 371(c)(1), (2) Date Nov. 28, 2018,
PCT Pub. No. WO2017/207236, PCT Pub. Date Dec. 7, 2017.
Claims priority of application No. 10 2016 209 336.3 (DE), filed on May 30, 2016.
Prior Publication US 2020/0316636 A1, Oct. 8, 2020
Int. Cl. B05D 3/04 (2006.01); B05D 1/30 (2006.01); D21H 23/48 (2006.01); B05C 5/00 (2006.01)
CPC B05C 5/005 (2013.01) [B05D 1/305 (2013.01); B05D 3/042 (2013.01); D21H 23/48 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A method for coating a continuous material web with a liquid and/or pasty application medium, the method comprising:
providing at least one applicator head formed with at least one outlet edge that extends substantially over an entire width of the applicator head;
providing a housing block having a transverse distribution chamber and a nozzle gap formed therein, and said housing block being surrounded at least in sections by an outer lining, where most of a front of said housing block, in a web movement direction, is surrounded by said outer lining and a thermally insulating layer that comes into contact with an exterior of the housing block;
causing application medium to pass out of the applicator head in the form of a free-falling curtain and to subsequently come into contact with the material web; and
selectively subjecting a region of at least one of the at least one outlet edges to a flowing gaseous rinsing medium; and
at least partially forming the thermally insulating layer by a gaseous insulation medium at least partially provided by the flow of gaseous rinsing medium inside a gap between said housing block and said outer lining; and
wherein the applicator head has an upper side and a lower side and said outlet opening is formed at said lower side, causing the rinsing medium that at least partially provides the insulation medium to flow downwardly to said outlet edge.