Bayer Aktiengesellschaft

Bayer Faser Gmbh

Wolfgang Klein

Michael Kausch

Karl-Heinz Wolf

Konrad Schmitz

Christine Soenksen

The invention describes elastane packages on cylindrical tubes which are provided with a finishing oil content varying over the filament length, and a method for the production thereof. Instead of being applied uniformly along the filament, the finishing oil is distinctly increased on the outermost part, constituting in particular at least 3%, of the filament wound onto the tubes such that the oil coat in this region is at least 1.2 times higher than in the remaining region of the package. This gives rise to a finishing coat gradient of the package from the outside (high) inwards (low).

Elastane fiber spools provided with a variable application of a preparation

The invention relates to a spinning process, more particularly a dry spinning process, for the production of elastane fibers in which 0.8 to 2% by weight of polydimethylsiloxane with a viscosity of 50 to 300 cSt and 0.2 to 0.6% by weight of ethoxylated polydimethylsiloxane with a viscosity of 20 to 150 cSt are added to the elastane spinning solution before it is spun.

Yarn formed of eastane fibers produced by the dry spinning or wet spinning of spinning solutions which include polydimethylsiloxane and ethoxylated polydimethylsiloxane

Process for the production of elastane fibers by inclusion of a

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Dormagen, Germany

Wolfgang Klein