Toray Industries, Inc.

Toray Engineering Company, Limited

Tadashi Kohara

Seiichi Yamagata

Masaaki Sakai

Syozo Morishita

Jun Takagi

Tetsuhiko Endo

Kunihiko Ueda

Nobuo Tsuchida

Tadahiko Okubo

Nobuo Tuchida

Itsuo Nakamura

Satoshi Kukino

A yarn winding device which comprises a yarn feeding unit for feeding a yarn at a predetermined yarn speed, an absorbing unit for absorbing a variation of a yarn speed by storing the yarn therein, a tensioning unit for applying a predetermined tension to a yarn, and a yarn winding unit for winding a yarn on a bobbin while traversing the yarn. A yarn detecting unit is provided for detecting whether or not a yarn is in front thereof in the absorbing unit and a control unit is also provided for controlling yarn winding speed of the yarn winding unit by increasing and decreasing that speed in accordance witha signal from the yarn detecting unit indicating a yarn existence or non-existence. After all, this yarn winding device makes a cone cheese package or a ribbonless package under constant tension by using an absorbing means between a feeding unit and a winding package.

Yarn winding device

A process and an apparatus for simultaneously drawing and false-twisting a thermoplastic synthetic yarn, in or by which an undrawn or a partially drawn yarn is drawn under a dry hot condition in a condition of the yarn being false-twisted by twist transmitted from a false-twister and immediately thereafter heat-set under a wet hot condition prior to untwisting. The apparatus includes a yarn heater, which comprises a dry heater disposed on the side of a feeding device for the undrawn or partially drawn yarn and a wet heater on the side of a false-twister along the yarn passing direction.

Process and apparatus for simultaneously drawing and false-twisting

An improved method for commencing the yarn forming operation of a fasciated yarn and an apparatus for carrying it out thereof. In the apparatus for manufacturing a fasciated yarn from a bundle of fibers suppled from a supply mechanism into a yarn forming mechanism provided with a fluid nozzle, when the yarn forming operation is commenced, the distance between the downstream nip point of the fiber bundle supply mechanism and a twisting point of the fluid nozzle is shortened in a condition shorter than a predetermined distance such as an effective fiber length of a material fiber, and after completion of such initial yarn forming operation, the above-mentioned distance is gradually or stepwisely enlarged to the distance wherein a normal yarn forming operation is carried out. Such shortening and enlarging the above-mentioned distance is carried out by displacing the fluid nozzle and/or changing the position of the downstream nip point of the fiber bundle supply mechanism.

Method and apparatus for commencing the yarn forming operation of a

Method and apparatus for starting, interrupting or stopping spinning of a fasciated spun yarn. Staple fibers are false twisted into a yarn, a fluid eddy is applied to the bundle, and separate suction is applied, cutting off temporarily the suction air current separately provided. Yarn formation is continued while re-applying the suction air current separately applied.

Method and apparatus to start interrupt and stop spinning of a fasciated

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Otsu, Japan

Tadashi Kohara