D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
34/22
D21F 5/04 (2006.01) F26B 13/08 (2006.01)
Patent
CA 1087835
ABSTRACT OF THE DISCLOSURE: A method of passing a paper web in closed conduction, i.e. always supported by at least one felt or wire, in a paper- making machine front the end of a press section to the end of an initial section of a multiple cylinder dryer in which the drying cylinders are in two rows, comprising the steps of causing an endless primary dryer felt or wire to travel zig-zag from one of the rows to the other to lap all the drying cylinders in the initial section, with some of these cylinders in one row inside the loop of this primary felt or wire and others of these cylinders in another row and outside this loop, causing a secondary dryer felt or wire to lap one or more of the cylinders inside the loop of the primary felt or wire and press the latter against this one or more of these cylinders, causing the secondary felt or wire to lap a pick-up roll and pick up the web from the last roll of the press section and pass the web adherent to this secondary felt or wire to the primary felt or wire and the first drying cylinder so that the web is between this secondary felt or wire and the primary felt or wire while lapping this first driving cylinder, maintaining the web in contact with and supported by the primary felt or wire until the web and the primary felt or wire leave the last one of the drying cylinders in the said initial section, utilising the secondary felt or wire with or without one or more further felts or wires to keep the web pressed against the primary felt or wire wherever the latter laps the said cylinders which are inside its loop, controlling the velocity of the secondary felt or wire and of the or each of the further felts or wires to keep its or their angular velocities equal to the respective angular velo- cities of the web about the respective axes of the said cylinders which are inside the loop of the primary felt or wire.
281973
Koponen Martti
Koski Erkki
Robic Robic & Associes/associates
Valmet Oy
LandOfFree
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