Open-end spinning process and apparatus for performing same
AssigneesFritz Stahlecker, Hans Stahlecker
InventorFritz Stahlecker
Life of this patent
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Abstract
In a process in open-end spinning at least one sliver is opened into single fibers. A collecting surface, rotating at a higher speed than the opened single fibers takes up these as soon as they have left the opening area. The single fibers are taken along by the collecting surface while being expanded transversely to the rotational direction of the collecting surface in the form of a fiber veil. Before the completion of one revolution of the collecting surface, the single fibers are withdrawn from the collecting surface along a collecting line under an imparted twist thus forming a yarn, namely transversely to the direction of rotation of the collecting surface. The withdrawal speed corresponds hereby at least to the arrival speed of the single fibers at the collecting line.
Claims10
A method of making yarn using an open end spinning process comprising:
- opening at least one fiber sliver to single fibers using moving opening structure with formation of a fiber beard from which individual fibers are released and transported in a transport direction, taking up said fibers on a collecting surface of a moving collecting structure disposed immediately adjacent said opening structure at a position where said fibers leave the fiber beard and while travelling at a relatively low speed with respect to the speed of the opening structure,
- moving the collecting surface at a higher speed than the speed of the arriving fibers with formation of a fiber veil expanded transversely to a fiber transport direction of said collecting surface whereby said fibers extend essentially parallel to each other,
- withdrawing said fiber veil from the collecting surface at a speed at least corresponding to the speed of the fibers leaving the fiber beard and arriving at the collecting surface, and
- applying a twist to said fiber veil being withdrawn.
An apparatus for open end spinning of yarn comprising:
- an opener having moving opening structure for opening at least one fiber sliver to single fibers in an opening area thereby forming a fiber beard from which individual fibers are released and transported in a transport direction,
- a collecting surface on a moving collecting structure disposed immediately adjacent the opening area for taking up said fibers immediately after leaving the fiber beard and while travelling at a relatively low speed with respect to the speed of the opening structure,
- wherein the collecting surface is moving at a higher speed than the speed of the arriving fibers with formation of a fiber veil expanded transversely to a fiber transport direction of said collecting surface whereby said fibers extend essentially parallel to each other,
- a withdrawal device for withdrawing said fiber veil from the collecting surface at a speed at least corresponding to the speed of the fibers leaving the fiber beard and arriving at the collecting surface, and
- a twisting device for applying twist to said fiber veil being withdrawn.
Dependencies are inferred from the claim text.