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    PROCESS AND APPARATUS FOR SIMULTANEOUSLY DRAWING AND FALSE-TWISTING THERMOPLASTIC SYNTHETIC YARN
    1.
    发明专利
    PROCESS AND APPARATUS FOR SIMULTANEOUSLY DRAWING AND FALSE-TWISTING THERMOPLASTIC SYNTHETIC YARN 未知

    公开(公告)号：DE3165943D1

    公开(公告)日：1984-10-18

    申请号：DE3165943

    申请日：1981-04-16

    Applicant: TORAY INDUSTRIES

    Inventor： ENDO TETSUHIKO ,  UEDA KUNIHIKO ,  KOHARA TADASHI

    IPC: D02G1/02 ,  D02G1/04

    Abstract: 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 false-twisted condition of the yarn derived by twist transmitted from a false-twister, and immediately thereafter is heat-set under a wet hot condition prior to untwisting.The apparatus includes a yarn heater, which comprises a dry heater (3') disposed on the side of a feeding device (2) for the undrawn or partially drawn yarn, and a wet heater (3") disposed on the side of a false-twister (5) along the yarn running direction.By the process and apparatus, it is possible to sufficiently heat the yarn in a short heat-treating distance, without permitting to take place a substantial increase of external leakage of steam from the heater and a reduction of the mechanical strength of a textured yarn.

    METHOD AND APPARATUS FOR COMMENCING THE YARN FORMING OPERATION OF A FASCIATED YARN
    4.
    发明专利
    METHOD AND APPARATUS FOR COMMENCING THE YARN FORMING OPERATION OF A FASCIATED YARN 未知

    公开(公告)号：CA1071392A

    公开(公告)日：1980-02-12

    申请号：CA277794

    申请日：1977-05-05

    Applicant: TORAY INDUSTRIES

    Inventor： TSUCHIDA NOBUO ,  KOHARA TADASHI ,  MORISHITA SYOZO ,  YAMAGATA SEIICHI ,  SAKAI MASAAKI

    IPC: D02G1/16 ,  D02J1/08

    Abstract: METHOD AND APPARATUS FOR COMMENCING THE YARN FORMING OPERATION OF A FASCIATED YARN An improved method for commencing the yarn forming operation of a fasciated yarn and an apparatus for carried out thereof. In the apparatus for manufacturing a fasciated yarn from a bundle of fibers supplied 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.

    6.
    发明专利
    未知

    公开(公告)号：DE2720519A1

    公开(公告)日：1978-11-09

    申请号：DE2720519

    申请日：1977-05-06

    Applicant: TORAY INDUSTRIES

    Inventor： TSUCHIDA NOBUO ,  KOHARA TADASHI ,  OTSU SHIGA ,  MORISHITA SYOZO ,  YAMAGATA SEIICHI ,  SAKAI MASAAKI

    IPC: D01H1/115 ,  D01H5/26 ,  D01H15/00 ,  D02G3/38

    Abstract: 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.

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