Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Projecting particles in a moving gas stream
Patent
1978-11-03
1981-04-21
Czaja, Donald E.
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
Projecting particles in a moving gas stream
D04H 120
Patent
active
042632412
ABSTRACT:
A method for producing fibrous sheet material comprising dispersing fibers in a gas stream to obtain a gas-fiber stream, supplying the gas-fiber stream onto a flat screen, removing gas from the gas-fiber stream through said screen to form a fibrous layer thereon, removing part of the gas from the gas-fiber stream prior to supplying it onto the flat screen, simultaneously damping transversal pulsations induced in the gas-fiber stream during the course of its movement. The fiber concentration is increased to 20-500 g/m.sup.3. The fiber concentration is chosen in accordance with the specific fiber and its properties. An apparatus for carrying out this method comprises a slot nozzle having side walls normal to converging frontal walls, its inlet opening communicating with means for dispersing fibers in a gas stream, while its outlet opening communicates with a chamber. A flat screen adapted to form a fibrous layer thereon is mounted under the chamber, and a suction box is arranged underneath the flat screen, wherein the side walls of the slot nozzle are parallel with respect to each other, and means for removing part of the gas from the gas-fiber stream are provided in the chamber under the outlet opening of the slot nozzle, the chamber being provided with branch pipes for gas exhaust, mounted substantially in the upper portion of the chamber.
REFERENCES:
patent: 3028287 (1962-04-01), Greten
patent: 3906064 (1975-09-01), Iannazzi et al.
Alexandrov Vyacheslav S.
Dianov Ivan M.
Fofanova Tatyana S.
Guschin Alexandr E.
Ivanov Alexandr A.
Czaja Donald E.
Hall James R.
LandOfFree
Method for production of fibrous sheet material and apparatus fo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for production of fibrous sheet material and apparatus fo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for production of fibrous sheet material and apparatus fo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-557473