FR835620A - Process for obtaining white paper pulp from Scots pine wood - Google Patents

Process for obtaining white paper pulp from Scots pine wood

Info

Publication number
FR835620A
FR835620A FR835620DA FR835620A FR 835620 A FR835620 A FR 835620A FR 835620D A FR835620D A FR 835620DA FR 835620 A FR835620 A FR 835620A
Authority
FR
France
Prior art keywords
paper pulp
white paper
pine wood
obtaining white
scots pine
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
Application number
Other languages
French (fr)
Inventor
Paul Beyer
Otto Primavesi
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 filed Critical
Application granted granted Critical
Publication of FR835620A publication Critical patent/FR835620A/en
Expired legal-status Critical Current

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
    • 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
    • D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
    • D21C9/083—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching with inorganic compounds
    • 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
FR835620D 1937-04-29 1938-03-23 Process for obtaining white paper pulp from Scots pine wood Expired FR835620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB178290D DE667149C (en) 1937-04-29 1937-04-29 Process for the production of pinewood tweak

Publications (1)

Publication Number Publication Date
FR835620A true FR835620A (en) 1938-12-27

Family

ID=25944872

Family Applications (1)

Application Number Title Priority Date Filing Date
FR835620D Expired FR835620A (en) 1937-04-29 1938-03-23 Process for obtaining white paper pulp from Scots pine wood

Country Status (3)

Country Link
DE (1) DE667149C (en)
FR (1) FR835620A (en)
GB (1) GB507696A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE442479A (en) * 1940-08-19

Also Published As

Publication number Publication date
GB507696A (en) 1939-06-20
DE667149C (en) 1938-11-05

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