SE9301998L - Procedure for making paper - Google Patents

Procedure for making paper

Info

Publication number
SE9301998L
SE9301998L SE9301998A SE9301998A SE9301998L SE 9301998 L SE9301998 L SE 9301998L SE 9301998 A SE9301998 A SE 9301998A SE 9301998 A SE9301998 A SE 9301998A SE 9301998 L SE9301998 L SE 9301998L
Authority
SE
Sweden
Prior art keywords
grist
mixt
pref
added
dispersion
Prior art date
Application number
SE9301998A
Other languages
Swedish (sv)
Other versions
SE513447C2 (en
SE9301998D0 (en
Inventor
Hans Haellstroem
Original Assignee
Eka Nobel Ab
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 Eka Nobel Ab filed Critical Eka Nobel Ab
Priority to SE9301998A priority Critical patent/SE513447C2/en
Publication of SE9301998D0 publication Critical patent/SE9301998D0/en
Priority to FI942705A priority patent/FI942705A/en
Publication of SE9301998L publication Critical patent/SE9301998L/en
Publication of SE513447C2 publication Critical patent/SE513447C2/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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/16—Sizing or water-repelling agents

Abstract

The process involves (i) addition to a grist, of neutral pH, of an unstable mixt. formed by an anionic dispersion of colophon material with a dry substance content of 15 wt.% and a soln. of aluminium cpd., which consists of alum and/or a polyaluminium cpd. with a dry substance content of 2.5 wt.%, reckoned as Al2O3, and of a cationic dispersion of hydrophobic alkyl ketene dimer, which is added to the grist separately from the mixt.; (ii) forming; and (iii) dehydrating the grist on a wire. Pref. the mixt. is added to the grist near the inlet box before feeding out on to the wire and is produced in direct connection to the addition to the grist. Pref. the cationic ketene dimer dispersion is added to the grist near the inlet box. The grist has a pref. pH within the range 6.2 - 7.5.
SE9301998A 1993-06-10 1993-06-10 Method for producing paper, cardboard and similar prods. SE513447C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9301998A SE513447C2 (en) 1993-06-10 1993-06-10 Method for producing paper, cardboard and similar prods.
FI942705A FI942705A (en) 1993-06-10 1994-06-08 Method for making paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9301998A SE513447C2 (en) 1993-06-10 1993-06-10 Method for producing paper, cardboard and similar prods.

Publications (3)

Publication Number Publication Date
SE9301998D0 SE9301998D0 (en) 1993-06-10
SE9301998L true SE9301998L (en) 1994-12-11
SE513447C2 SE513447C2 (en) 2000-09-18

Family

ID=20390233

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9301998A SE513447C2 (en) 1993-06-10 1993-06-10 Method for producing paper, cardboard and similar prods.

Country Status (2)

Country Link
FI (1) FI942705A (en)
SE (1) SE513447C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107447582B (en) 2016-06-01 2022-04-12 艺康美国股份有限公司 Efficient strength scheme for papermaking in high charge demand systems

Also Published As

Publication number Publication date
SE513447C2 (en) 2000-09-18
SE9301998D0 (en) 1993-06-10
FI942705A (en) 1994-12-11
FI942705A0 (en) 1994-06-08

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Legal Events

Date Code Title Description
NUG Patent has lapsed