EP 0393656 A1 19901024 - Assembly in a paper machine for effecting upward dewatering.
Title (en)
Assembly in a paper machine for effecting upward dewatering.
Title (de)
Einrichtung in einer Papiermaschine zur Erzielung von Aufwärtsentwässerung.
Title (fr)
Assemblage dans une machine à papier pour effet d'assèchement vers le haut.
Publication
Application
Priority
FI 891853 A 19890419
Abstract (en)
In an assembly in a paper and cardboard machine in a twin-wire section comprising a lower wire (1) constituted of the wire (1) of a fourdrinier wire section, and an upper wire (2) which is guided on top of the lower wire (1) by means of a forming roll (3), around which the twin-wire section is curved within a predetermined sector ( alpha ). The twin-wire section situated after the forming roll (3) is provided with a guiding means (6) on the side of the lower wire (1), the twin-wire section being curved at said guiding means in an opposite direction compared with the curvature on the forming roll (3). The section between the roll (3) and the guiding means (6) is provided with one or several dewatering means (4) on the side of the lower wire (1). Within said section on the side of the upper wire (2) there is provided a dewatering means, to which is connected means for effecting suction causing dewatering.
IPC 1-7
IPC 8 full level
D21F 1/48 (2006.01); D21F 3/04 (2006.01); D21F 9/00 (2006.01)
CPC (source: EP)
D21F 1/48 (2013.01); D21F 9/003 (2013.01)
Citation (search report)
- [Y] US 4561939 A 19851231 - JUSTUS EDGAR J [US]
- [Y] DE 3604522 A1 19860904 - VALMET OY [FI]
- [AD] FI 75375 B 19880229 - VALMET OY [FI]
- [A] DE 3534836 A1 19860417 - VALMET OY [FI]
Designated contracting state (EPC)
AT DE FR GB IT SE
DOCDB simple family (publication)
EP 0393656 A1 19901024; EP 0393656 B1 19940216; AT E101669 T1 19940315; CA 2014790 A1 19901019; DE 69006623 D1 19940324; DE 69006623 T2 19940721; FI 86652 B 19920615; FI 86652 C 19920925; FI 891853 A0 19890419; FI 891853 A 19901020
DOCDB simple family (application)
EP 90107413 A 19900419; AT 90107413 T 19900419; CA 2014790 A 19900418; DE 69006623 T 19900419; FI 891853 A 19890419