F - Mech Eng,Light,Heat,Weapons – 26 – B
Patent
F - Mech Eng,Light,Heat,Weapons
26
B
34/22
F26B 1/00 (2006.01) D21F 5/04 (2006.01) F26B 11/00 (2006.01) F26B 13/00 (2006.01)
Patent
CA 1156829
Abstract A cylinder dryer usually includes a plurality of heated cylinders (4) about which a web-like material (1) is taken in a zig-zag mode and pressed against certain of the heated cylinder surfaces by means of an endless high- permeability wire (3), whereby cylinder pockets are formed between the cylinders (4), web (1) and wire (3), when the latter relinquishes contact with the web at a cylinder surface (6) to pass over a return roll (7) arranged between the cylinders, and once again makes contact with the web at the next following cylinder circumference (8). According to the invention these cylinder pockets are ventilated by a flow of drying air from a blowing box (9) being blown over the width of the wire against its surface facing away from the cylinder, in l direction forming an acute angle to and having a directing component substantially counter to the direction of travel of the wire. Blowing is carried out thereby within an ares (6) where the wire relinquishes contact with the web. The blowing box (9) is also provided with means (11) arranged for preventing an interface layer of moist air about the circumference of the return roll being introduced into the cylinder pocket upon rotation of the return roll.
388503
Andersson Karl-Hugo
Zinn Nils
Flakt Aktiebolag
Gowling Lafleur Henderson Llp
LandOfFree
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