Importance

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Abstract

A core yarn manufacturing machine has a spinning unit including a hollow guide shaft member wherein the yarn passage is formed in the axis direction, and a nozzle applies a whirling flow to the tip section of the hollow guide shaft member. A core yarn is manufactured by winding the fiber bundle into the spinning unit, around the core fiber which is also fed, in the tip section of the hollow guide shaft member. The machine has a suction force producer for producing a suction force toward the interior of the yarn passage from the entrance of the hollow guide shaft member, and a core fiber feeding apparatus that feeds to the spinning unit. A control device controls the operation and non-operation of the whirling flow generating nozzle, the suction force producer and the core fiber feeding apparatus.

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First Claim