(19)
(11) EP 0 369 968 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
19.02.1992 Bulletin 1992/08

(43) Date of publication A2:
23.05.1990 Bulletin 1990/21

(21) Application number: 89850385.9

(22) Date of filing: 07.11.1989
(51) International Patent Classification (IPC)5: D21F 7/06, D21F 3/02, D21F 7/00
(84) Designated Contracting States:
AT DE FR GB IT SE

(30) Priority: 15.11.1988 FI 885283

(71) Applicant: VALMET PAPER MACHINERY INC.
SF-00130 Helsinki (FI)

(72) Inventor:
  • Salo, Jukka
    SF-40400 Jyväskylä (FI)

(74) Representative: Rostovanyi, Peter et al
AWAPATENT AB, Box 5117
200 71 Malmö
200 71 Malmö (SE)


(56) References cited: : 
   
       


    (54) Arrangement in a paper machine


    (57) The invention concerns an arrangement in a part of a paper machine in which the surface properties of a roll and/or rolls are affected by regulating the temperature of the roll face by means of an external heating device. In the arrangement, such a combination of a heating device and a roll coating is used that the heating radiation pene­trates through the paper or only directly to the roll face but does not heat the roll itself at a greater depth. Said roll coating is made of a dark, readily heatable and insulating material. The invention is utilized, e.g., in a calender or for detaching the paper from a roll.





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