EP4745298A1 - METHOD FOR PRODUCING MICROFIBRILLATED CELLULOSE FROM A CELLULOSE RAW MATERIAL - Google Patents

METHOD FOR PRODUCING MICROFIBRILLATED CELLULOSE FROM A CELLULOSE RAW MATERIAL

Info

Publication number
EP4745298A1
EP4745298A1 EP24213978.0A EP24213978A EP4745298A1 EP 4745298 A1 EP4745298 A1 EP 4745298A1 EP 24213978 A EP24213978 A EP 24213978A EP 4745298 A1 EP4745298 A1 EP 4745298A1
Authority
EP
European Patent Office
Prior art keywords
cellulose
raw material
producing microfibrillated
microfibrillated cellulose
producing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP24213978.0A
Other languages
German (de)
French (fr)
Inventor
Tuomo Aho
Heli Kangas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valmet Technologies Oy
Original Assignee
Valmet Technologies Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valmet Technologies Oy filed Critical Valmet Technologies Oy
Priority to EP24213978.0A priority Critical patent/EP4745298A1/en
Publication of EP4745298A1 publication Critical patent/EP4745298A1/en
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D21H11/18—Highly hydrated, swollen or fibrillatable fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D21C9/007—Modification of pulp properties by mechanical or physical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
EP24213978.0A 2024-11-19 2024-11-19 METHOD FOR PRODUCING MICROFIBRILLATED CELLULOSE FROM A CELLULOSE RAW MATERIAL Pending EP4745298A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP24213978.0A EP4745298A1 (en) 2024-11-19 2024-11-19 METHOD FOR PRODUCING MICROFIBRILLATED CELLULOSE FROM A CELLULOSE RAW MATERIAL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP24213978.0A EP4745298A1 (en) 2024-11-19 2024-11-19 METHOD FOR PRODUCING MICROFIBRILLATED CELLULOSE FROM A CELLULOSE RAW MATERIAL

Publications (1)

Publication Number Publication Date
EP4745298A1 true EP4745298A1 (en) 2026-05-20

Family

ID=93590930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24213978.0A Pending EP4745298A1 (en) 2024-11-19 2024-11-19 METHOD FOR PRODUCING MICROFIBRILLATED CELLULOSE FROM A CELLULOSE RAW MATERIAL

Country Status (1)

Country Link
EP (1) EP4745298A1 (en)

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