SE8402176D0 - PAPER MANUFACTURING PROCEDURE - Google Patents

PAPER MANUFACTURING PROCEDURE

Info

Publication number
SE8402176D0
SE8402176D0 SE8402176A SE8402176A SE8402176D0 SE 8402176 D0 SE8402176 D0 SE 8402176D0 SE 8402176 A SE8402176 A SE 8402176A SE 8402176 A SE8402176 A SE 8402176A SE 8402176 D0 SE8402176 D0 SE 8402176D0
Authority
SE
Sweden
Prior art keywords
added
fiber pulp
filler
pulp suspension
retention agent
Prior art date
Application number
SE8402176A
Other languages
Swedish (sv)
Other versions
SE8402176L (en
SE460730B (en
Inventor
L J Yrjans
L H Petander
Original Assignee
Kemira Oy
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 Kemira Oy filed Critical Kemira Oy
Publication of SE8402176D0 publication Critical patent/SE8402176D0/en
Publication of SE8402176L publication Critical patent/SE8402176L/en
Publication of SE460730B publication Critical patent/SE460730B/en

Links

Classifications

    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • D21H17/375—Poly(meth)acrylamide
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/53—Polyethers; Polyesters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Making Paper Articles (AREA)

Abstract

A novel method is provided herein for making paper or paperboard with a higher dry strength than previously by adding to the fiber pulp suspension a smaller amount than previously of cationic, water-soluble starch and a synthetic retention agent. In addition, a filler can be added to the fiber pulp suspension. According to the invention, cationic, water-soluble starch is added to the fiber pulp suspension at only 0.02-1.5% (as calculated from the dry weight of the pulp) and the synthetic retention agent (which is selected from the group consisting of polyacrylamides, their derivatives and copolymers), is added at only 0.005-0.1%, (also as calculated from the dry weight of the pulp). The addition can be made either to a fiber pulp suspension which is substantially free from filler, or part of the retention agent may be added to the fiber pulp suspension before the adding of the filler, or a pre-treated filler may be added to the fiber pulp at some other stage.
SE8402176A 1983-04-25 1984-04-18 PROCEDURES FOR MANUFACTURING PAPER WITH FORBETTRAD TORRHAALL FASTENCE SE460730B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI831400A FI71379C (en) 1983-04-25 1983-04-25 METHOD VID PAPPERSFRAMSTAELLNING

Publications (3)

Publication Number Publication Date
SE8402176D0 true SE8402176D0 (en) 1984-04-18
SE8402176L SE8402176L (en) 1984-10-26
SE460730B SE460730B (en) 1989-11-13

Family

ID=8517099

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8402176A SE460730B (en) 1983-04-25 1984-04-18 PROCEDURES FOR MANUFACTURING PAPER WITH FORBETTRAD TORRHAALL FASTENCE

Country Status (5)

Country Link
CA (1) CA1232713A (en)
DE (1) DE3412535A1 (en)
FI (1) FI71379C (en)
NO (1) NO163871B (en)
SE (1) SE460730B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0203817A1 (en) * 1985-05-31 1986-12-03 Betz Europe, Inc. Polymeric compositions
GB8531558D0 (en) * 1985-12-21 1986-02-05 Wiggins Teape Group Ltd Loaded paper
US5876563A (en) * 1994-06-01 1999-03-02 Allied Colloids Limited Manufacture of paper
SE0401600D0 (en) * 2004-06-18 2004-06-18 Stfi Packforsk Ab Method of manufacturing paper or similar
CN101597875B (en) * 2009-07-10 2014-06-18 南京林业大学 New technique for improving paper strength by joint gelatinization of starch and pulp

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1110004A (en) * 1964-07-28 1968-04-18 Basf Ag Improved papers having high mechanical strength and their production

Also Published As

Publication number Publication date
NO163871B (en) 1990-04-23
FI71379B (en) 1986-09-09
SE8402176L (en) 1984-10-26
FI831400L (en) 1984-10-26
CA1232713A (en) 1988-02-16
DE3412535A1 (en) 1984-10-25
SE460730B (en) 1989-11-13
FI831400A0 (en) 1983-04-25
FI71379C (en) 1986-12-19
NO841616L (en) 1984-10-26

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