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US 4,489,540 AGranted
Process and device for obtaining a spun yarn of fibres comprising an internal core and novel types of spun yarns thus made
AssigneeAsa S.A.
InventorsJean-Louis Faure, Jean Venot
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Abstract
The invention relates to a process and device for making a spun yarn of fibres comprising an internal core which consists in subjecting the yarn to form the core to a momentary false twist by means of a spindle and projecting elementary fibres onto this yarn. Such elementary fibres are projected by means of a mobile guide surface on which the fibres are delivered tangentially, the core likewise being displaced tangentially with respect to the guide surface in a direction concurrent with the direction of delivery of the fibres.
Claims16
A process for making a spun yarn of fibres comprising an internal core, comprising the steps of:
- (a) positively delivering a yarn forming an internal core,
- (b) subjecting said core yarn to a momentary false twist,
- (c) projecting elementary fibres onto said core yarn, upstream of a false twist spindle,
- wherein:
- the projection of said elementary fibres onto said core yarn is effected by means of a mobile guide surface on which said fibres are delivered tangentially and which tends to exert a pulling force on the free end of said fibres, and
- said core yarn is displaced tangentially with respect to said guide surface in a direction concurrent with the direction of delivery of the fibres.
3 more elements
Dependencies are inferred from the claim text.