(19) |
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(11) |
EP 0 357 574 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
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23.10.1991 Bulletin 1991/43 |
(43) |
Date of publication A2: |
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07.03.1990 Bulletin 1990/10 |
(22) |
Date of filing: 09.08.1989 |
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(84) |
Designated Contracting States: |
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AT BE CH DE ES FR GB IT LI NL SE |
(30) |
Priority: |
01.09.1988 SE 8803065
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(71) |
Applicant: Eka Nobel Aktiebolag |
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S-445 01 Surte (SE) |
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(72) |
Inventor: |
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- Johansson, Hans Erik
S-442 33 Kungälv (SE)
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(74) |
Representative: Schöld, Zaid |
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Eka Nobel AB
Patent Department
Box 11556 S-100 61 Stockholm S-100 61 Stockholm (SE) |
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(54) |
A process for the production of paper |
(57) A method for the production of paper by forming and dewatering a suspension of cellulose
containing fibres on a wire. The forming and dewatering takes place in the presence
of an anionic, inorganic colloid, an aluminate and a cationic synthetic polymer. The
process gives improved dewatering and improved retention of fines and optional fillers.