Textiles: fiber preparation – Assembling – Web forming
Patent
1992-12-01
1994-03-01
Nerbun, Peter
Textiles: fiber preparation
Assembling
Web forming
19296, 191457, 19 99, D01G 2500
Patent
active
052896188
ABSTRACT:
An apparatus for making a nonwoven web has a carding drum (1), a continuously moving, air-permeable collecting surface member (2) for collecting fibers which fly in an entraining air stream from the carding drum (1), a suction box (4), connected to the collecting surface member (2), and a suction duct (3) extending between the collecting surface member and a peripheral portion of the carding drum (1) which is directly opposite to the collecting surface member (2). In order to ensure desirable conditions of flow in the suction duct (3), air supply passages (10, 11) extend over the working width of the carding drum (1) in the region in which the carding drum (1) is adjacent to leading and trailing suction duct walls (3a and 3b), with respect to the direction of rotation of the carding drum (1), and the air supply passag extend between the carding drum (1) and two drum guards (12 and 13), which respectively extend opposite to the direction of rotation of the drum from the leading duct wall (3a) and in the direction of rotation of the drum from the trailing duct wall (3b).
REFERENCES:
patent: 3641628 (1972-02-01), Fehrer
patent: 3914822 (1975-10-01), Wood
patent: 3963392 (1976-06-01), Goyal
patent: 4315347 (1982-02-01), Austin et al.
patent: 4712277 (1987-12-01), Gustavsson
patent: 5007137 (1991-04-01), Graute
patent: 5117535 (1992-06-01), Fehrer
Calvert John J.
Nerbun Peter
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