Title: Texturizing of filaments

Abstract: Filaments or filament bundles, which are conveyed by a heated gas, are crimped by treating them in a preheat chamber and crimping them in an elongate chamber from which the heated gas medium issues through longitudinal slits. A stream of cold gas is made to impinge on the outside of the lower one-third of the elongate chamber without allowing significant amounts of this cold gas to enter the said chamber. The resulting filaments or filament bundles have very good dyeing characteristics.

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Inventors: Bauer, Wolfgang (Heidelberg, DT)
Martin, Wolfgang (Ludwigshafen, DT)
Lehrer, Erwin (Bad Duerkheim, DT)

Application Number: 667090
Filing Date: 1976-03-15
Publication_date: 1977-03-29
Assignee: BASF Farben & Fasern Aktiengesellschaft (Hamburg, DT)
Primary Class(es): 28/255
Other Classes:
US Patent Ref:

3714686	Feb, 1973	Schmid et al.	28/1.
3849844	Nov, 1974	Bauch et al.	28/1.
3885278	May, 1975	Whitaker	28/1.
3908248	Sep, 1975	Schmid et al.	28/1.
3956807	May, 1976	Holland	28/1.
3965547	Jun, 1976	Ferrier et al.	28/1.

Other Refs:
Primary Examiner: Rimrodt, Louis K.
Assistant Examiner:
Attorney: Johnston, Keil, Thompson & Shurtleff