Importance

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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.

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First Claim