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US 6,370,858 B1Granted
Core yarn production method and apparatus
AssigneeMurata Kikai Kabushiki Kaisha
InventorShigeki Mori
Life of this patent
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Abstract
A method and apparatus for producing core yarn in which a drafted fiber bundle and a core fiber are supplied to a nozzle block and a hollow guide shaft, and in which vortex air currents are ejected from spinning nozzles, in the nozzle block, to make the fiber bundle wrap around the core fiber evenly and uniformly.
Claims7
A core yarn producing apparatus, comprising the following:
- a spinning device having a hollow guide shaft provided with a yarn path and spinning nozzles that are embedded in a nozzle block to eject vortex air currents to an area adjacent to an upper tip of the hollow guide shaft;
- and
- a core fiber supplying device that feeds a core fiber upstream of a front roller;
- wherein
- a drafted fiber bundle and the core fiber are guided to the nozzle block and the hollow guide shaft, and fibers that compose the fiber bundle wrap around the core fiber in an area adjacent to the upper tip of the hollow guide shaft to produce the core yarn.
2 more elements
A core yarn producing method for producing a yarn resembling a true twist spun yarn, comprising:
- providing a spinning device with a hollow guide shaft having a yarn path, and a nozzle block including spinning nozzles to eject vortex air currents to an area adjacent to an upper tip of the hollow guide shaft;
- and
- supplying a core fiber and a drafted fiber bundle at the same time to the nozzle block and to the hollow guide shaft whereby fibers of the drafted fiber bundle are inversely turned and wrap around the core fiber and the fiber bundle while the core fiber and the fiber bundle are being fed into the hollow guide shaft.
Dependencies are inferred from the claim text.