Apparatus for making a spun fleece from endless synthetic-resin

Details Apparatus for making a spun fleece from endless synthetic-resin Apparatus for making a spun fleece from endless synthetic-resin

1987-11-10

1989-03-14

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Continuous filament forming or film casting means with...

26421114, 264237, 425 722, B29C 4734

Patent

active

048121126

ABSTRACT:
A device for making a spun fleece has a spinning nozzle or spinneret system, a cooling shaft, a stretching gap, a diffuser shaft, a continuously moving fleece receiving conveyor and a device for feeding process air and for pulling or removing outflowing air through the fleece receiving conveyor. The cooling shaft has a shaft wall provided with a plurality of air orifices. Because of that process air required for the cooling is fed into the cooling shaft. The air flow at least partially is pulled through the fleece receiving conveyor and the spun fleece formed by the deposited endless filament loops. The deposited length of the endless filament loops is measured over the spun fleece width in the finished fleece. The measured value is compared with a predetermined set value. On deviation of the measured value from the set value the setting angles of the air control flaps pivotable about a horizontal axis which are located at the entrance of the stretching gap are changed. On a positive deviation of the measured value of the thickness from the set value the setting angles are decreased (deposited length larger than the set value).

REFERENCES:
patent: 3787195 (1974-01-01), Kirchheim
patent: 3812553 (1974-05-01), Marshall et al.
patent: 4217078 (1980-08-01), Buell
patent: 4340563 (1982-07-01), Appel et al.
patent: 4388056 (1983-06-01), Lee et al.
patent: 4442062 (1984-04-01), Fujii et al.
patent: 4692106 (1987-09-01), Grabowski et al.

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