(19)
(11) EP 0 687 770 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.05.1997 Bulletin 1997/21

(43) Date of publication A2:
20.12.1995 Bulletin 1995/51

(21) Application number: 95201470.2

(22) Date of filing: 06.06.1995
(51) International Patent Classification (IPC)6: D21H 25/08, B05C 11/02
(84) Designated Contracting States:
AT DE ES FR GB IT NL SE

(30) Priority: 07.06.1994 FI 942688

(71) Applicant: OY KESKUSLABORATORIO - CENTRALLABORATORIUM AB
SF-02151 Espoo (FI)

(72) Inventors:
  • Niemi, Markku
    SF-01860 Perttula (FI)
  • Mannström, Markus
    SF-02700 Kauniainen (FI)
  • Pouhakka, Matti
    SF-02460 Kantvik (FI)
  • Aalto, Olli
    SF-12400 Tervakoski (FI)

(74) Representative: Karlsson, Leif Karl Gunnar et al
L.A. Groth & Co. KB, Box 6107
S-102 32 Stockholm
S-102 32 Stockholm (SE)

   


(54) Procedure for coating a paper web


(57) The invention concerns a procedure for coating a paper web, in the procedure coating material being applied on the surface of the web being run at high speed and the coating being levelled by scraping. According to the procedure, levelling of the coating is carried out with the aid of a pre-doctor so that the quantity of coating remaining on the web is 12 to 30 g/m2, advantageously 12 to 20 g/m2, after levelling performed with the pre-doctor, steam is conducted onto the web surface, and the coating levelled with the pre-doctor is levelled a second time with the aid of a scraping doctor so that the quantity of coating remaining on the web, after levelling, is 6 to 14 g/m2.





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