SE8304233L - PUT TO MAKE PAPER - Google Patents

PUT TO MAKE PAPER

Info

Publication number
SE8304233L
SE8304233L SE8304233A SE8304233A SE8304233L SE 8304233 L SE8304233 L SE 8304233L SE 8304233 A SE8304233 A SE 8304233A SE 8304233 A SE8304233 A SE 8304233A SE 8304233 L SE8304233 L SE 8304233L
Authority
SE
Sweden
Prior art keywords
slurry
strength
paper
fibres
web
Prior art date
Application number
SE8304233A
Other languages
Swedish (sv)
Other versions
SE8304233D0 (en
Inventor
S F Galeano
Original Assignee
Owens Illinois Inc
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
Priority claimed from US06/289,944 external-priority patent/US4411737A/en
Application filed by Owens Illinois Inc filed Critical Owens Illinois Inc
Publication of SE8304233D0 publication Critical patent/SE8304233D0/en
Publication of SE8304233L publication Critical patent/SE8304233L/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
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

Paper is prepd. from a slurry of fibres of high lignin content pulp including treating the slurry with 15-25 wt.%, based on oven wt. fibres, soln. of Na sulphite, Na sulphide and Na carbonate having Na sulphite:Na sulphide mole ratio 0.1-2.0:1 at at least 60 deg.C., atmospheric press., pH at least 10, for 10-60 min.. - The paper is made by (a) treating a high lignin content slurry having a predetermined freeness, contg. 1-20 wt.% fibres at least 50% of which are softwood fibres and not more than 3.0% residual cooking chemicals, with the soln.; (b) refining the slurry to enable prodn. of paper having predetermined properties; (c) forming a web from the slurry; and (d) drying the web. The treatment increases the strength of paper made at the same degree of freeness without loss of yield. The web is pref. a high strength top sheet of a liner board. The process may also be used in prodn. of paperboard from corrugating board. - The treatment is inexpensive, residual chemicals can be reused for treatment or cooking, no pH adjustments are required, and strength of liner board prepd. from treated (untreated) slurry is e.g. Mullen strength 124.9 (107.0) psi; tensile strength 79.8
SE8304233A 1981-08-04 1983-08-02 PUT TO MAKE PAPER SE8304233L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/289,944 US4411737A (en) 1979-12-13 1981-08-04 Pulp treating process

Publications (2)

Publication Number Publication Date
SE8304233D0 SE8304233D0 (en) 1983-08-02
SE8304233L true SE8304233L (en) 1985-02-03

Family

ID=23113852

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8304233A SE8304233L (en) 1981-08-04 1983-08-02 PUT TO MAKE PAPER

Country Status (1)

Country Link
SE (1) SE8304233L (en)

Also Published As

Publication number Publication date
SE8304233D0 (en) 1983-08-02

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