GB431542A - Improvements in and relating to processes for the manufacture of cellulose and half-stuff - Google Patents

Improvements in and relating to processes for the manufacture of cellulose and half-stuff

Info

Publication number
GB431542A
GB431542A GB26181/34A GB2618134A GB431542A GB 431542 A GB431542 A GB 431542A GB 26181/34 A GB26181/34 A GB 26181/34A GB 2618134 A GB2618134 A GB 2618134A GB 431542 A GB431542 A GB 431542A
Authority
GB
United Kingdom
Prior art keywords
stuff
cellulose
fibre
manufacture
ground wood
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
GB26181/34A
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.)
HOFASTO AG
Original Assignee
HOFASTO AG
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 HOFASTO AG filed Critical HOFASTO AG
Publication of GB431542A publication Critical patent/GB431542A/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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam

Landscapes

  • Paper (AREA)

Abstract

431,542. Manufacture of cellulose and half-stuff. HOFASTO AKT.-GES., Hergeswil, Kt. Nidwalden, Switzerland. Sept. 12, 1934, Nos. 26181 and 26182. Convention dates, Sept. 13, 1933. [Class 96] In a method of manufacturing cellulose or half-stuff ground wood washed until it is freed from fibre fragments and fibre mucilage, or the coarse material which accumulates during the manufacture or sorting of ground wood, washed free from fine fibres, fibre fragments and fibre mucilage, is subjected to chemical treatment in the usual manner. The chemical treatment of the fibres may be complete or partial to yield either cellulose or half-stuff. Wood rich in resin, such as pine, is a suitable starting material. The cellulose or half-stuff obtained from ground wood according to the invention may be added in suitable proportions to ground wood to make a paper suitable for newspapers. Specification 389,120 is referred to.
GB26181/34A 1933-09-13 1934-09-12 Improvements in and relating to processes for the manufacture of cellulose and half-stuff Expired GB431542A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH778163X 1933-09-13

Publications (1)

Publication Number Publication Date
GB431542A true GB431542A (en) 1935-07-10

Family

ID=34624401

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26181/34A Expired GB431542A (en) 1933-09-13 1934-09-12 Improvements in and relating to processes for the manufacture of cellulose and half-stuff

Country Status (2)

Country Link
DE (1) DE607037C (en)
GB (1) GB431542A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745251C (en) * 1940-01-19 1944-03-01 Probst & Class Conversion of pre-shredded wood into fibers, especially for feed production
DE1051626B (en) * 1955-04-21 1959-02-26 Waldhof Zellstoff Fab Process for the production of pulp powder

Also Published As

Publication number Publication date
DE607037C (en) 1934-12-15

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