FR2439263A1 - PROCESS FOR IMPROVING THE PROPERTIES OF A MECHANICALLY MADE WOOD PULP - Google Patents

PROCESS FOR IMPROVING THE PROPERTIES OF A MECHANICALLY MADE WOOD PULP

Info

Publication number
FR2439263A1
FR2439263A1 FR7926075A FR7926075A FR2439263A1 FR 2439263 A1 FR2439263 A1 FR 2439263A1 FR 7926075 A FR7926075 A FR 7926075A FR 7926075 A FR7926075 A FR 7926075A FR 2439263 A1 FR2439263 A1 FR 2439263A1
Authority
FR
France
Prior art keywords
properties
improving
fibers
wood pulp
charge
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.)
Granted
Application number
FR7926075A
Other languages
French (fr)
Other versions
FR2439263B3 (en
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 Oy
Original Assignee
Valmet 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 Oy filed Critical Valmet Oy
Publication of FR2439263A1 publication Critical patent/FR2439263A1/en
Application granted granted Critical
Publication of FR2439263B3 publication Critical patent/FR2439263B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents
    • 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
    • D21B1/14—Disintegrating in mills
    • D21B1/18—Disintegrating in mills in magazine-type machines
    • D21B1/24—Disintegrating in mills in magazine-type machines of the pocket type

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

L'INVENTION VISE A AUGMENTER LE TAUX DE RETENTION DE LA CHARGE DANS LA PATE DANS LE BUT D'AMELIORER SANS REACTION CHIMIQUE LES PROPRIETES OPTIQUES ET D'IMPRESSION DU PAPIER. LA CHARGE EST PROJETEE PAR UNE TUYERE 7 SUR LES FIBRES OBTENUES PAR ACTION DE LA MEULE 3 SUR LES RONDINS 2, CETTE OPERATION S'EFFECTUANT ALORS QUE LA LIGNINE, QUI ADHERE AUX FIBRES DU FAIT DE LA TEMPERATURE ELEVEE ENGENDREE LORS DU DEFIBRAGE, EST RENDUE MOLLE, PLASTIQUE ET COLLANTE ET EST CAPABLE DE PROVOQUER UNE MEILLEURE ADHESION DES PARTICULES DE CHARGES SUR LES FIBRES. APPLICATION A LA FABRICATION DU PAPIER.THE INVENTION AIMS AT INCREASING THE RATE OF RETENTION OF THE CHARGE IN THE PULP IN ORDER TO IMPROVE THE OPTICAL AND PRINTING PROPERTIES OF THE PAPER WITHOUT CHEMICAL REACTION. THE CHARGE IS PROJECTED BY A TUBE 7 ON THE FIBERS OBTAINED BY ACTION OF THE WHEEL 3 ON THE RODS 2, THIS OPERATION IS CARRIED OUT WHEN THE LIGNIN, WHICH BONDS TO THE FIBERS DUE TO THE HIGH TEMPERATURE GENERATED DURING DEFIBRATION, IS MADE SOFT, PLASTIC AND STICKY AND IS ABLE TO CAUSE BETTER ADHESION OF FILLER PARTICLES TO FIBERS. APPLICATION TO PAPER MANUFACTURING.

FR7926075A 1978-10-19 1979-10-19 PROCESS FOR IMPROVING THE PROPERTIES OF A MECHANICALLY MADE WOOD PULP Granted FR2439263A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI783193A FI57978C (en) 1978-10-19 1978-10-19 FOERFARANDE FOER FRAMSTAELLNING AV SLIPMASSA OCH FOER FOERBAETTRING AV DESS EGENSKAPER

Publications (2)

Publication Number Publication Date
FR2439263A1 true FR2439263A1 (en) 1980-05-16
FR2439263B3 FR2439263B3 (en) 1981-08-14

Family

ID=8512087

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7926075A Granted FR2439263A1 (en) 1978-10-19 1979-10-19 PROCESS FOR IMPROVING THE PROPERTIES OF A MECHANICALLY MADE WOOD PULP

Country Status (10)

Country Link
JP (1) JPS5557090A (en)
BR (1) BR7906762A (en)
CA (1) CA1120301A (en)
DE (1) DE2941675A1 (en)
FI (1) FI57978C (en)
FR (1) FR2439263A1 (en)
GB (1) GB2035839B (en)
IT (1) IT1125495B (en)
NO (1) NO793357L (en)
SE (1) SE7908578L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109537337A (en) * 2018-07-16 2019-03-29 广西综改咨询服务有限公司 A kind of paper grade (stock) timber crushing grinding device

Also Published As

Publication number Publication date
FI783193A (en) 1980-04-20
GB2035839B (en) 1982-10-27
NO793357L (en) 1980-04-22
IT1125495B (en) 1986-05-14
SE7908578L (en) 1980-04-20
FI57978C (en) 1980-11-10
FR2439263B3 (en) 1981-08-14
BR7906762A (en) 1980-06-03
JPS5557090A (en) 1980-04-26
IT7926605A0 (en) 1979-10-18
GB2035839A (en) 1980-06-25
DE2941675A1 (en) 1980-04-30
CA1120301A (en) 1982-03-23
FI57978B (en) 1980-07-31

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Legal Events

Date Code Title Description
ST Notification of lapse