Method of making a fleece from spun filaments

Details Method of making a fleece from spun filaments Method of making a fleece from spun filaments

1989-03-18

1991-07-16

Dawson, Robert A.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Positioning of a mold part to form a cavity or controlling...

264 402, 264 403, 2642108, 264555, D01D 512

Patent

active

050323296

ABSTRACT:
An apparatus for making a fleece comprises a horizontally elongated upright passage, flaps defining a stretching gap between the walls, and respective lower flaps have upper edges pivotal by actuators on the walls. A foraminous conveyor belt extends horizontally immediately underneath the passage and is advanced generally continuously horizontally past the passage. An array of spinnerets in the upper end of the passage forms filaments that move downward in the passage and that deposit on the moving conveyor as cool air is introduced into the upper end of the passage and is withdrawn from the passage through the lower end thereof and through the foraminous belt. The deposited length of the filaments on the belt downstream of the lower passage end is continuously monitored and an output corresponding thereto is generated and is compared with a set point and the lower flaps are pivoted to move their lower edges away from one another when the output of the sensor means exceeds the set point and vice versa.

REFERENCES:
patent: 4003105 (1977-01-01), Guschin et al.
patent: 4520531 (1985-06-01), Hergeth
patent: 4692106 (1987-09-01), Grabowski et al.
patent: 4820459 (1989-04-01), Reifenhauser

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