CH332820A - Process for the production of bleached semi-pulp - Google Patents

Process for the production of bleached semi-pulp

Info

Publication number
CH332820A
CH332820A CH332820DA CH332820A CH 332820 A CH332820 A CH 332820A CH 332820D A CH332820D A CH 332820DA CH 332820 A CH332820 A CH 332820A
Authority
CH
Switzerland
Prior art keywords
pulp
production
bleached
semi
bleached semi
Prior art date
Application number
Other languages
German (de)
Inventor
Heinz Dr Haas
Joachim Dr Leugering Hans
Original Assignee
Waldhof Zellstoff Fab
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 Waldhof Zellstoff Fab filed Critical Waldhof Zellstoff Fab
Publication of CH332820A publication Critical patent/CH332820A/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
    • 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
    • D21C9/1026—Other features in bleaching processes
    • 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
    • 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
    • D21C3/22—Other features of pulping processes
CH332820D 1954-04-08 1955-03-02 Process for the production of bleached semi-pulp CH332820A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ4142A DE1034473B (en) 1954-04-08 1954-04-08 Process for the production of bleached semi-pulp

Publications (1)

Publication Number Publication Date
CH332820A true CH332820A (en) 1958-09-30

Family

ID=7619037

Family Applications (1)

Application Number Title Priority Date Filing Date
CH332820D CH332820A (en) 1954-04-08 1955-03-02 Process for the production of bleached semi-pulp

Country Status (5)

Country Link
BE (1) BE536814A (en)
CH (1) CH332820A (en)
DE (1) DE1034473B (en)
FR (1) FR1129498A (en)
GB (1) GB785060A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4559103A (en) * 1982-08-05 1985-12-17 Honshu Seishi Kabushiki Kaisha Packaging paper and packaging material for packaging metallic material and method of producing the same
CA1240456A (en) * 1983-10-20 1988-08-16 Kamyr, Inc. Mechanical pulping

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE404506C (en) * 1921-12-01 1924-10-18 A Olier Sa Des Ets Process and device for the production of pulp from wood-containing raw material
BE496841A (en) * 1949-07-12
FR1033615A (en) * 1951-01-25 1953-07-13 Azienda Brevetti Ind Improvement in the manufacture of semi-chemical pulp
AT175782B (en) * 1951-02-28 1953-08-10 Waldhof Zellstoff Fab Process for the production of semi-pulp

Also Published As

Publication number Publication date
FR1129498A (en) 1957-01-22
GB785060A (en) 1957-10-23
BE536814A (en)
DE1034473B (en) 1958-07-17

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