Melt spinning apparatus

Plastic article or earthenware shaping or treating: apparatus – Shaping orifice and downstream work contacting gaseous... – Orifice for filaments or fibers

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4253782, 4253822, 425464, D01D 5088

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active

060628383

ABSTRACT:
In a melt spinning apparatus, cooling system with a blower nozzle with slit-shaped outlet openings is used which is directed upon the yarns emerging from the spinning nozzle. The blower nozzle is provided with a bend immediately before its outlet opening through which the air stream is directed to the output of the yarns from the spinning nozzles. The bend is designed so that a rapid and effective cooling of all the extruded filaments takes place, even with a nozzle package with a large number of perforations, without having to provide several blower nozzles. A narrowing at a given distance before the outlet opening ensures even distribution of the flow profile produced over the entire outlet cross-section of the blower nozzle. Furthermore, the spinning nozzles are assigned an induction heating system in which induction coils are placed above the area over which the spinning nozzles extend.

REFERENCES:
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patent: 3583027 (1971-06-01), Garrett et al.
patent: 3584678 (1971-06-01), Rakestraw
patent: 3593775 (1971-07-01), Privott, Jr.
patent: 3650716 (1972-03-01), Brossard
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patent: 5536157 (1996-07-01), Linz
patent: 5700491 (1997-12-01), Herwegh et al.
Patent Abstracts of Japan No. 5706612, Published Apr. 22, 1982.

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