GB1247019A - Improvements in or relating to papermaking - Google Patents

Improvements in or relating to papermaking

Info

Publication number
GB1247019A
GB1247019A GB4425368A GB4425368A GB1247019A GB 1247019 A GB1247019 A GB 1247019A GB 4425368 A GB4425368 A GB 4425368A GB 4425368 A GB4425368 A GB 4425368A GB 1247019 A GB1247019 A GB 1247019A
Authority
GB
United Kingdom
Prior art keywords
stock
rubbery
sept
impurities
mixture
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
GB4425368A
Inventor
Kikuzo Saito
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1247019A publication Critical patent/GB1247019A/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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/16—Pure paper, i.e. paper lacking or having low content of contaminants
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

1,247,019. Papermaking. K. SAITO. 18 Sept., 1968 [19 Sept., 1967], No. 44253/68. Heading D2A. [Also in Division B2] Rubbery impurities are removed from paper stock by a process which comprises mixing and diluting the stock with water, introducing and simultaneously dispersing an aerated stream of this mixture into a zone maintained at a subatmospheric pressure, allowing the mixture to accumulate in the zone, and removing the layer of rubbery impurities which forms on the surface. Purified stock is removed from a level below that of the surface of the stock in the vessel. The stock may be beaten, screened and loaded with chemical or other additives before removal of the rubbery impurity. The process is particularly useful in producing usable pulp from rubber trees.
GB4425368A 1967-09-19 1968-09-18 Improvements in or relating to papermaking Expired GB1247019A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5957967A JPS4944003B1 (en) 1967-09-19 1967-09-19

Publications (1)

Publication Number Publication Date
GB1247019A true GB1247019A (en) 1971-09-22

Family

ID=13117264

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4425368A Expired GB1247019A (en) 1967-09-19 1968-09-18 Improvements in or relating to papermaking

Country Status (2)

Country Link
JP (1) JPS4944003B1 (en)
GB (1) GB1247019A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03505846A (en) * 1988-07-12 1991-12-19 アールストロム　マシナリイ　オサケ　ユキチュア Method and apparatus for removing light substances from fiber suspensions
CN115787336A (en) * 2022-12-09 2023-03-14 安德里茨（中国）有限公司 A mix thick liquid groove device and make paper and be equipped with thick liquid line for making paper be equipped with thick liquid line

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03505846A (en) * 1988-07-12 1991-12-19 アールストロム　マシナリイ　オサケ　ユキチュア Method and apparatus for removing light substances from fiber suspensions
CN115787336A (en) * 2022-12-09 2023-03-14 安德里茨（中国）有限公司 A mix thick liquid groove device and make paper and be equipped with thick liquid line for making paper be equipped with thick liquid line
CN115787336B (en) * 2022-12-09 2024-01-19 安德里茨（中国）有限公司 Pulp mixing tank device for papermaking pulp preparing line and papermaking pulp preparing line

Also Published As

Publication number Publication date
JPS4944003B1 (en) 1974-11-26

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