(19)
(11) EP 0 987 366 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
05.04.2000 Bulletin 2000/14

(43) Date of publication A2:
22.03.2000 Bulletin 2000/12

(21) Application number: 99117832.8

(22) Date of filing: 09.09.1999
(51) International Patent Classification (IPC)7: D21F 7/08
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 14.09.1998 US 152194

(71) Applicant: JWI LTD
Kanata, Ontario K2K 1X2 (CA)

(72) Inventors:
  • Fekete, Eugene
    Dunwoody, Georgia 30338 (US)
  • Wiebe, Kurt
    North Gower, Ontario K0A 2TO (CA)
  • Baker, Samuel M.
    Carleton Place, Ontario K7C 1MI (CA)

(74) Representative: Laufhütte, Dieter, Dr.-Ing. et al
Lorenz-Seidler-Gossel Widenmayerstrasse 23
80538 München
80538 München (DE)

   


(54) Press felt with improved drainage


(57) A three layer papermaking press section press felt in which the first layer comprises a core fabric which contains the mechanical loads placed upon the press felt, the second layer comprises a layer of absorbent material, typically a batt needle punched onto the core fabric, and the third layer comprises a porous layer attached to the surface of the absorbent layer. The third layer receives the wet paper web. The three layer press felts remove from about 3% to at least about 5% more water from the wet paper web under pressure in a press section in comparison with the same press felt to which the third porous layer has not been added.






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