DE68909231T2 - Verfahren zur herstellung der mechanischen oder chemiemechanischen papierpulpe. - Google Patents

Verfahren zur herstellung der mechanischen oder chemiemechanischen papierpulpe.

Info

Publication number
DE68909231T2
DE68909231T2 DE89905472T DE68909231T DE68909231T2 DE 68909231 T2 DE68909231 T2 DE 68909231T2 DE 89905472 T DE89905472 T DE 89905472T DE 68909231 T DE68909231 T DE 68909231T DE 68909231 T2 DE68909231 T2 DE 68909231T2
Authority
DE
Germany
Prior art keywords
mechanical
chemi
producing
paper pulp
mechanical paper
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.)
Expired - Fee Related
Application number
DE89905472T
Other languages
English (en)
Other versions
DE68909231D1 (de
Inventor
Per Engstrand
Lars-Ake Hammar
Myat Htun
Rune Pettersson
Boerje Svensson
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 AB
Original Assignee
STFI Skogsindustrins Tekniska Forskningsinstitut AB
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 STFI Skogsindustrins Tekniska Forskningsinstitut AB filed Critical STFI Skogsindustrins Tekniska Forskningsinstitut AB
Application granted granted Critical
Publication of DE68909231D1 publication Critical patent/DE68909231D1/de
Publication of DE68909231T2 publication Critical patent/DE68909231T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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

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)
DE89905472T 1988-05-06 1989-04-05 Verfahren zur herstellung der mechanischen oder chemiemechanischen papierpulpe. Expired - Fee Related DE68909231T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8801731A SE461103B (sv) 1988-05-06 1988-05-06 Framstaellning av mekanisk och kemimekanisk massa i tvaa steg
PCT/SE1989/000172 WO1989010998A1 (en) 1988-05-06 1989-04-05 Method of making mechanical and chemi-mechanical papermaking pulp

Publications (2)

Publication Number Publication Date
DE68909231D1 DE68909231D1 (de) 1993-10-21
DE68909231T2 true DE68909231T2 (de) 1994-04-28

Family

ID=20372264

Family Applications (1)

Application Number Title Priority Date Filing Date
DE89905472T Expired - Fee Related DE68909231T2 (de) 1988-05-06 1989-04-05 Verfahren zur herstellung der mechanischen oder chemiemechanischen papierpulpe.

Country Status (7)

Country Link
EP (1) EP0413736B1 (de)
JP (1) JPH03504256A (de)
CA (1) CA1320067C (de)
DE (1) DE68909231T2 (de)
FI (1) FI91787C (de)
SE (1) SE461103B (de)
WO (1) WO1989010998A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9002039D0 (sv) * 1990-06-07 1990-06-07 Svenska Traeforskningsinst Saett att framstaella massa
US5853534A (en) * 1992-12-30 1998-12-29 Sunds Defibrator Industries Ab Method of producing pulp with high yield using a two-stage refining system operating at different temperatures
US6899791B2 (en) 1997-08-08 2005-05-31 Andritz Inc. Method of pretreating lignocellulose fiber-containing material in a pulp refining process
US8734611B2 (en) * 2008-03-12 2014-05-27 Andritz Inc. Medium consistency refining method of pulp and system
SE540961C2 (en) * 2016-05-23 2019-01-29 Holmen Ab Method of providing a paper fibre composition by combining chemical and mechanical pulping

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE409476B (sv) * 1978-02-17 1979-08-20 Sca Development Ab Sett for fraffinering av lignocellulosahaltigt material
JPS564791A (en) * 1979-06-18 1981-01-19 Kogyo Gijutsuin Bleaching of mechanical pulp
CA1246374A (en) * 1983-10-24 1988-12-13 Steve Rowland Two stage high consistency refiner
SE456826B (sv) * 1986-04-18 1988-11-07 Svenska Traeforskningsinst Saett att reducera energikonsumtionen vid raffinering av cellulosahaltigt material

Also Published As

Publication number Publication date
EP0413736B1 (de) 1993-09-15
WO1989010998A1 (en) 1989-11-16
EP0413736A1 (de) 1991-02-27
FI91787B (fi) 1994-04-29
JPH03504256A (ja) 1991-09-19
SE461103B (sv) 1990-01-08
SE8801731L (sv) 1989-11-07
SE8801731D0 (sv) 1988-05-06
FI91787C (fi) 1994-08-10
DE68909231D1 (de) 1993-10-21
CA1320067C (en) 1993-07-13
FI905482A0 (fi) 1990-11-05

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: SUNDS DEFIBRATOR INDUSTRIES AB, SUNDSVALL, SE

8339 Ceased/non-payment of the annual fee