WO2012136878A3 - Method for bleaching fibrous material made from atypical raw material - Google Patents

Method for bleaching fibrous material made from atypical raw material Download PDF

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Publication number
WO2012136878A3
WO2012136878A3 PCT/FI2012/000020 FI2012000020W WO2012136878A3 WO 2012136878 A3 WO2012136878 A3 WO 2012136878A3 FI 2012000020 W FI2012000020 W FI 2012000020W WO 2012136878 A3 WO2012136878 A3 WO 2012136878A3
Authority
WO
WIPO (PCT)
Prior art keywords
raw material
atypical
bleaching
cellulose
fibrous material
Prior art date
Application number
PCT/FI2012/000020
Other languages
French (fr)
Other versions
WO2012136878A2 (en
Inventor
Heikki Hassi
Sakari Siren
Timo Partanen
Juha Isoherranen
Original Assignee
Carbatec 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
Priority claimed from FI20115335A external-priority patent/FI20115335A0/en
Priority claimed from FI20115668A external-priority patent/FI123344B/en
Application filed by Carbatec Oy filed Critical Carbatec Oy
Publication of WO2012136878A2 publication Critical patent/WO2012136878A2/en
Publication of WO2012136878A3 publication Critical patent/WO2012136878A3/en

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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
    • 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
    • D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds
    • 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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
    • 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/02—Synthetic cellulose fibres
    • D21H13/08—Synthetic cellulose fibres from regenerated cellulose

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Textile Engineering (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Paper (AREA)

Abstract

In a method for bleaching fibre material comprising regenerated cellulose fibre made of atypical cellulose-containing raw material, fibres are treated with a bleaching solution containing a peracid. The atypical cellulose raw material is a raw material having a high hemicellulose content and/or containing other impurities, and having a low brightness level, from which viscose is manufactured, which is bleached by a solution that contains a peracid, to achieve a high brightness level.
PCT/FI2012/000020 2011-04-08 2012-04-10 Method for bleaching fibrous material made from atypical raw material WO2012136878A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FI20115335A FI20115335A0 (en) 2011-04-08 2011-04-08 Process for pretreatment of cellulose
FI20115335 2011-04-08
FI20115668A FI123344B (en) 2011-06-23 2011-06-23 A method for bleaching a fibrous material
FI20115668 2011-06-23

Publications (2)

Publication Number Publication Date
WO2012136878A2 WO2012136878A2 (en) 2012-10-11
WO2012136878A3 true WO2012136878A3 (en) 2012-11-29

Family

ID=46969614

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2012/000020 WO2012136878A2 (en) 2011-04-08 2012-04-10 Method for bleaching fibrous material made from atypical raw material

Country Status (1)

Country Link
WO (1) WO2012136878A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112981577A (en) * 2019-12-12 2021-06-18 连津格股份公司 Method for producing modal fibers completely chlorine-free

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB845063A (en) * 1957-09-06 1960-08-17 Degussa Bleaching bath
GB926639A (en) * 1960-05-31 1963-05-22 Courtaulds Ltd Improvements relating to the treatment of cellulosic fabrics
EP0989224A1 (en) * 1998-09-21 2000-03-29 Warwick International Group Limited Lyocell bleaching process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB845063A (en) * 1957-09-06 1960-08-17 Degussa Bleaching bath
GB926639A (en) * 1960-05-31 1963-05-22 Courtaulds Ltd Improvements relating to the treatment of cellulosic fabrics
EP0989224A1 (en) * 1998-09-21 2000-03-29 Warwick International Group Limited Lyocell bleaching process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBARRA, D. ET AL.: "Combination of alkaline and enzymatic treatments as a process for uppgrading sisal paper-grade pulp to dissolving-grade pulp.", BIORESOURCE TECHNOLOGY, vol. 101, 2010, pages 7416 - 7423, XP027089384 *

Also Published As

Publication number Publication date
WO2012136878A2 (en) 2012-10-11

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