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US 5,263,311 AGranted
Method and apparatus for modifying spun textile yarn
AssigneeInstitute of Textile Technology
InventorsRalph W. Feil, Thomas M. Ellis
Life of this patent
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Abstract
A method of modifying surface characteristics, such as hairiness, and trash content by passing a spun yarn through an air jet nozzle. Data show reduced hairiness and improved cleanliness over normally wound yarn.
Claims10
A method comprising:
- providing a length of a spun yarn;
- supplying a rotating vortex having a translational velocity component moving in a first direction generally along the axis of rotation of said vortex;
- passing said spun yarn through said vortex in a second direction generally opposite to said first direction and further wherein, when viewed facing said first direction, the twist in said spun yarn is generally opposite to the rotation of said vortex and exiting said spun yarn from said nozzle at an exit angle relative to the axis of said nozzle of approximately 30 degrees.
A method of reducing hairiness in a pre-existing textile spun yarn comprising the steps of:
- (a) continuously moving a pre-existing textile spun yarn strand in a desired path,
- (b) passing the yarn strand along a portion of the path through a rotating vortex of fluid having a translational velocity component moving in a direction along the axis of rotation of the vortex generally opposite the direction of movement of the spun yarn strand therethrough and a translational velocity component opposite the direction of twist in the yarn strand, and
A method of reducing hairiness in a pre-existing textile spun yarn comprising the steps of:
- (a) providing a pre-existing textile spun yarn strand from a spun yarn storage,
- (b) directing the spun yarn strand in a desired path of travel,
- (c) passing the spun yarn strand along a portion of the path through a rotating vortex of fluid having a translational velocity component moving in a direction along the axis of rotation of the vortex generally opposite the direction of movement of the spun yarn strand therethrough and a translational velocity component opposite the direction of twist in the spun yarn strand, and
- (d) contacting the moving spun yarn strand immediately adjacent its exit from the vortex of fluid with a surface which opposes passage of false twist to concentrate false twist in the spun yarn stand in the vortex.
1 more element
Dependencies are inferred from the claim text.