Global Patent Index - EP 1015685 A1

EP 1015685 A1 2000-07-05 - METHOD FOR CONTROLLING CONSISTENCY OF PAPERMAKING PULP

Title (en)

METHOD FOR CONTROLLING CONSISTENCY OF PAPERMAKING PULP

Title (de)

VERFAHREN ZUR STEUERUNG DER FASERSTOFFKONISTENZ

Title (fr)

PROCEDE SERVANT A REGLER LA CONSISTANCE D'UNE PATE A PAPIER

Publication

EP 1015685 A1 (EN)

Application

EP 98900550 A

Priority

  • FI 9800015 W
  • FI 970065 A

Abstract (en)

[origin: WO9830751A1] A procedure for adjusting the consistency of paper pulp, in which procedure: allowed minimum and maximum values are defined for the consistency of head box pulp and/or for the consistency of the tail liquid coming from the wire dehydrators (14, 15), the consistency of the pulp entering the head box (13) is measured by means of measuring element (4) and/or the consistency of the tail liquid coming from the wire dehydrators (14, 15) is measured by means of measuring element (5). Based on the measurement data of at least one consistency measurement and controlled by a control apparatus (8), liquid or pulp of desired consistency is supplied via a consistency regulating liquid line (1) into the pulp line leading to the head box (13) at a point after or before the wire pit (12) or directly into the wire pit (12) until the desired consistency is obtained.

IPC 1-7 (main, further and additional classification)

D21F 1/08

IPC 8 full level (invention and additional information)

D21F 1/08 (2006.01)

CPC (invention and additional information)

D21F 1/08 (2013.01)

Citation (search report)

See references of WO 9830751A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9830751 A1 19980716; AU 5562398 A 19980803; CA 2277082 A1 19980716; EP 1015685 A1 20000705; FI 970065 A0 19970107; FI 970065 A 19980708

INPADOC legal status


2003-03-12 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020910

2002-04-17 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020227

2000-07-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990720

2000-07-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE