(19)
(11)EP 3 714 995 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
14.10.2020 Bulletin 2020/42

(43)Date of publication A2:
30.09.2020 Bulletin 2020/40

(21)Application number: 20165491.0

(22)Date of filing:  25.03.2020
(51)Int. Cl.: 
B05D 7/14  (2006.01)
B05D 3/12  (2006.01)
B05D 3/02  (2006.01)
B05D 3/10  (2006.01)
B05D 1/28  (2006.01)
B05D 7/00  (2006.01)
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30)Priority: 26.03.2019 KR 20190034530

(71)Applicant: LG Electronics Inc.
07336 SEOUL (KR)

(72)Inventors:
  • KIM, Dong Jin
    08592 Seoul (KR)
  • JUN, Hyunwoo
    08592 Seoul (KR)
  • KIM, Juwon
    08592 Seoul (KR)
  • HWANG, Jongwon
    08592 Seoul (KR)

(74)Representative: Vossius & Partner Patentanwälte Rechtsanwälte mbB 
Siebertstrasse 3
81675 München
81675 München (DE)

  


(54)STEEL SHEET COATING APPARATUS AND STEEL SHEET COATING METHOD USING THE APPARATUS


(57) A steel sheet coating apparatus includes a cleaner configured to apply cleaning liquid to thereby clean a surface of a steel sheet, a polisher that applies polishing liquid to the cleaned surface of the steel sheet and that includes at least one polishing wheel configured to polish the surface of the steel sheet, a coater that includes a plurality of coating rollers that are configured to coat the polished surface of the steel sheet with coating liquid, and a curing furnace that includes curing chambers that are configured to heat the steel sheet coated with the coating liquid, that have different heating temperatures, and that are configured to cure the coating liquid on the steel sheet based on heating the steel sheet in one chamber having a first temperature and then heating the steel sheet in another chamber having a second temperature greater than the first temperature.