D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 1/10 (2006.01) D21F 1/48 (2006.01) D21F 9/00 (2006.01)
Patent
CA 2104230
2104230 9312292 PCTABS00023 A twin-wire former is used to produce a web of paper or cardboard. Two wires (endless wire loops 11 and 12) form together a twin-wire zone, in which the first wire (12) runs over fixed rails (28', 28) mutually spaced in a dehydration box (18), as well as the other wire (11) over a few rails (27) located opposite the fixed rails (28), supported on compliant elements (springs 24, pneumatic pressure cushions or the like) and capable of being pressed with a selectable force against the other wire. A closed wire supporting surface (9) is arranged before the rails (27) in one of the wire loops (27). A secondary pulp inlet (10') may be arranged before the closed wire supporting surface (9).
Egelhof Dieter
Großmann Udo
Pisinger Franz
Polifke Hubert
Sahlin Sven-Ake
J. M. Voith G.m.b.h.
Mccarthy Tetrault Llp
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