GB492219A - Preparation of paper pulp - Google Patents

Preparation of paper pulp

Info

Publication number
GB492219A
GB492219A GB28023/37A GB2802337A GB492219A GB 492219 A GB492219 A GB 492219A GB 28023/37 A GB28023/37 A GB 28023/37A GB 2802337 A GB2802337 A GB 2802337A GB 492219 A GB492219 A GB 492219A
Authority
GB
United Kingdom
Prior art keywords
washing
tow
cooked
dry weight
per cent
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
GB28023/37A
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.)
CHAMPAGNE PAPER CORP
Original Assignee
CHAMPAGNE PAPER CORP
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 CHAMPAGNE PAPER CORP filed Critical CHAMPAGNE PAPER CORP
Publication of GB492219A publication Critical patent/GB492219A/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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • D21C3/022—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of S-containing compounds

Abstract

Pulp suitable for paper-making is obtained from flax or hemp tow by subjecting the material to a cooking operation in a digester with a solution of water in a proportion of about 2 1/2 to 4 times the dry weight of the fibres, and 14-20 per cent sodium hydroxide and 1-4 per cent of sulphur, the percentages being based on the dry weight of the tow, and washing the cooked material to remove shive fibre and water-soluble impurities. The tow may be taken in the wet state, after washing to remove soluble impurities, and cooked in a rotary digester at raised pressure. After washing the cooked material, it may be dried and stored, or it may be subjected to a bleaching operation.
GB28023/37A 1936-10-19 1937-10-14 Preparation of paper pulp Expired GB492219A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US106369A US2099400A (en) 1936-10-19 1936-10-19 Preparation of paper pulp

Publications (1)

Publication Number Publication Date
GB492219A true GB492219A (en) 1938-09-16

Family

ID=22311025

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28023/37A Expired GB492219A (en) 1936-10-19 1937-10-14 Preparation of paper pulp

Country Status (2)

Country Link
US (1) US2099400A (en)
GB (1) GB492219A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0824160A1 (en) * 1996-08-14 1998-02-18 Giesecke & Devrient GmbH Process for the manufacture of paper making pulp

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL147891C (en) * 1949-07-29
US3210235A (en) * 1963-04-08 1965-10-05 Scott Paper Co Pulping of cellulose materials in the presence of free sulfur in a kraft pulping system and cyclic liquor recovery therefor
US3318761A (en) * 1963-12-18 1967-05-09 Standard Oil Co Digestion with alkali metal hydroxide and carbonyl sulfide
US8795469B2 (en) * 2010-06-25 2014-08-05 Prairie Paper Ventures Inc. Method for preparing nonwood fiber paper
CN102733216A (en) * 2012-06-28 2012-10-17 陕西科技大学 Method for reducing masson pine chemical-mechanical pulp resin content through alkali treatment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0824160A1 (en) * 1996-08-14 1998-02-18 Giesecke & Devrient GmbH Process for the manufacture of paper making pulp

Also Published As

Publication number Publication date
US2099400A (en) 1937-11-16

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