D - Textiles – Paper – 01 – H
Patent
D - Textiles, Paper
01
H
19/13, 19/3
D01H 5/00 (2006.01) D04H 1/72 (2006.01)
Patent
CA 1085128
Abstract of the Disclosure A method for production of fibrous sheet material com- prising dispersing fibres in a gas stream to obtain a gas- -fibre stream, supplying the gas-fibre stream onto a flat screen, removing gas from the gas-fibre stream through said screen to form a fibrous sheet layer thereon, and its subsequent treating to obtain a fibrous sheet material, a part of gas being removed from the gas-fibre stream prior to supplying it onto the flat screen, so as to bring the fibre concentra- tion up to 20-500 g/m3. The concentration is chosen in accor- dance with the kind and properties of fibres. Simultaneously transversal pulsations induced in the gas-fibre stream in the course of its movement are damped. An apparatus for carrying out this method comprises a slot nozzle having side walls which are normal to converging frontal walls, its inlet ope- ning being connected with a means for dispersing fibres in a gas stream, while its outlet opening is connected with a chamber, a flat screen adapted to form a fibrous layer thereon, mounted under said chamber, and a suction box arranged under- neath the flat screen, wherein the side walls of the slot nozzle are in parallel relationship with respect to each other, a means for removing a part of gas from the gas-fibre stream is arranged in the chamber under the outlet opening of the slot nozzle, and the chamber is provided with branch pipes for gas exhaust, mounted substantially in the upper portion of the chamber.
310524
Alexandrov Vyacheslav S.
Dianov Ivan M.
Fofanova Tatyana S.
Guschin Alexandr E.
Ivanov Alexandr A.
Marks & Clerk
Vsesojuznoe Nauchno-Proizvodstvennoe Obiedinenie Tselljulozno-Bu
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