(19)
(11) EP 4 739 836 A1

(12)

(43) Date of publication:
13.05.2026 Bulletin 2026/20

(21) Application number: 24835507.5

(22) Date of filing: 11.06.2024
(51) International Patent Classification (IPC): 
D21F 1/66(2006.01)
C08B 15/08(2006.01)
D21F 3/02(2006.01)
D21H 11/18(2006.01)
 C08B 15/02(2006.01)
C08L 1/02(2006.01)
D21H 11/14(2006.01)
(52) Cooperative Patent Classification (CPC):
D21F 1/66; D21H 11/14; D21H 11/18; D21F 11/00; D21F 9/00; D21C 9/007
(86) International application number:
PCT/IB2024/055703
(87) International publication number:
WO 2025/008693 (09.01.2025 Gazette 2025/02)
(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 05.07.2023 SE 2330313

(71) Applicant: Stora Enso Oyj
00101 Helsinki (FI)

(72) Inventors:
  • NYLÉN, Otto
    00420 HELSINKI (FI)
  • KARPPINEN, Anni
    02230 Espoo (FI)
  • BACKFOLK, Kaj
    53100 Lappeenranta (FI)

(74) Representative: Steinrud, Henrik 
Stora Enso AB Group Intellectual Property Box 9090
65009 Karlstad
65009 Karlstad (SE)

   


(54) A METHOD FOR PRODUCING A MICROFIBRILLATED CELLULOSE WEB