CH379256A - Process for the production of semi-chemical sulphite pulp - Google Patents

Process for the production of semi-chemical sulphite pulp

Info

Publication number
CH379256A
CH379256A CH7811759A CH7811759A CH379256A CH 379256 A CH379256 A CH 379256A CH 7811759 A CH7811759 A CH 7811759A CH 7811759 A CH7811759 A CH 7811759A CH 379256 A CH379256 A CH 379256A
Authority
CH
Switzerland
Prior art keywords
semi
production
sulphite pulp
chemical
chemical sulphite
Prior art date
Application number
CH7811759A
Other languages
German (de)
Inventor
Nicolaus Cederquist Karl
Karl Esbjorn Dr Phil Eftring
Original Assignee
Stora Kopparbergs Bergslags 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 Stora Kopparbergs Bergslags Ab filed Critical Stora Kopparbergs Bergslags Ab
Publication of CH379256A publication Critical patent/CH379256A/en

Links

Classifications

    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
CH7811759A 1958-09-11 1959-09-11 Process for the production of semi-chemical sulphite pulp CH379256A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE865658 1958-09-11
SE768259 1959-08-18

Publications (1)

Publication Number Publication Date
CH379256A true CH379256A (en) 1964-06-30

Family

ID=26654793

Family Applications (1)

Application Number Title Priority Date Filing Date
CH7811759A CH379256A (en) 1958-09-11 1959-09-11 Process for the production of semi-chemical sulphite pulp

Country Status (7)

Country Link
US (1) US3078208A (en)
BE (1) BE582569A (en)
CH (1) CH379256A (en)
DE (1) DE1262754B (en)
FI (1) FI40601B (en)
FR (1) FR1236223A (en)
GB (1) GB885605A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3383277A (en) * 1967-02-06 1968-05-14 Scott Paper Co Two-stage pulping process with an isothermal first stage
US3533906A (en) * 1967-10-11 1970-10-13 Haigh M Reiniger Permanently reacted lignocellulose products and process for making the same
SE355614B (en) * 1970-05-13 1973-04-30 Mo Och Domsjoe Ab
US4116758A (en) * 1976-05-14 1978-09-26 Canadian International Paper Co. Method of producing high yield chemimechanical pulps
DE102007008955A1 (en) * 2007-02-21 2008-08-28 Voith Patent Gmbh Producing fibrous material from lignocellulosic material comprises preparing a chemical solution with less percentage of sulfite, mixing the solution with wood, heating, removing the solution, pulping and separating the woods and solution
BRPI0712857A2 (en) * 2006-06-08 2012-07-31 Voith Patent Gmbh Method for the production of fibrous material
EP2126195A1 (en) * 2006-12-23 2009-12-02 Voith Patent GmbH Method for the production of tissue paper
DE102007036382A1 (en) * 2007-07-31 2009-02-05 Voith Patent Gmbh Lignocellulosic pulp from annual plants

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US215728A (en) * 1879-05-27 Improvement in the manufacture of paper-pulp from wood
US2862813A (en) * 1952-12-23 1958-12-02 Process Evaluation Devel Semi-chemical pulping process
US2640774A (en) * 1953-01-27 1953-06-02 Pulp And Papen Res Inst Of Can Production of cellulose pulp
US2809111A (en) * 1956-02-13 1957-10-08 Condi Engineering Corp Apparatus for wood chip digestion
US2858213A (en) * 1956-04-20 1958-10-28 Condi Engineering Corp Wood chip digestion
US2975096A (en) * 1957-11-18 1961-03-14 Bauer Bros Co Impregnation of wood chips

Also Published As

Publication number Publication date
US3078208A (en) 1963-02-19
FR1236223A (en) 1960-07-15
GB885605A (en) 1961-12-28
BE582569A (en) 1959-12-31
FI40601B (en) 1968-11-30
DE1262754B (en) 1968-03-07

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