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    STRETCHING OF STAPLE FIBRES
    1.
    发明专利
    STRETCHING OF STAPLE FIBRES 未知

    公开(公告)号：CA2064817C

    公开(公告)日：2000-11-14

    申请号：CA2064817

    申请日：1990-08-16

    Applicant: COMMW SCIENT IND RES ORG

    Inventor： PHILLIPS DAVID GRAHAM ,  WARNER JOHN JAMES

    IPC: D01H5/28 ,  D01H5/22 ,  D02G1/02 ,  D02J1/22

    Abstract: A method for stretching an assembly, e.g. a sliver or roving, of untwisted staple fibres (12) to reduce their diameter and increase their length employs false twist to provide grip between the fibres to ensure that stretching of the fibres and not drafting of the assembly occurs. The fibres are first plasticized by treatment with a suitable agent, in a bath (16) and then passed through apparatus which employs a number of rotatable arrays (24, 25, 29, 32) of driven pulleys (26, 33). The arrays are mounted for rotation between two twist blocking nips (18; 18') and are rotatable about a longitudinal axis corresponding to the direction of travel of the assembly through the apparatus to impart false twist into the assembly. The assembly is stretched between two of the pulley arrays (24 and 25); the pulleys of the downstream array (25) being driven at a higher speed than the pulleys of the upstream array (24). The stretch is then set by steam heating in chamber (17) while the false twist is maintained by further rotatable pulley arrays (29). Post treatment stages (14, 46) may be added to further stabilize the stretched fibres. The fibres are animal hairs; for example wool.

    STRETCHING OF STAPLE FIBRES
    4.
    发明专利
    STRETCHING OF STAPLE FIBRES 未知

    公开(公告)号：AU6166990A

    公开(公告)日：1991-04-03

    申请号：AU6166990

    申请日：1990-08-16

    Applicant: COMMW SCIENT IND RES ORG

    Inventor： PHILLIPS DAVID GRAHAM ,  WARNER JOHN JAMES

    IPC: D01H5/28 ,  D01H5/22 ,  D02G1/02 ,  D02J1/22

    Abstract: A process for stretching natural staple fibers to reduce the diameter includes the steps of treating a substantially untwisted traveling assembly of natural fibers to plasticize the natural fibers, twisting the traveling assembly sufficiently to substantially prevent drafting of the assembly during subsequent stretching, subsequently stretching the twisted assembly and setting the stretch. Staple fibers having reduced diameters are provided as a result of the stretching process.

    6.
    发明专利
    未知

    公开(公告)号：AT152785T

    公开(公告)日：1997-05-15

    申请号：AT90912404

    申请日：1990-08-16

    Applicant: COMMW SCIENT IND RES ORG

    Inventor： PHILLIPS DAVID GRAHAM ,  WARNER JOHN JAMES

    IPC: D01H5/28 ,  D01H5/22 ,  D02G1/02 ,  D02J1/22

    Abstract: A process for stretching natural staple fibers to reduce the diameter includes the steps of treating a substantially untwisted traveling assembly of natural fibers to plasticize the natural fibers, twisting the traveling assembly sufficiently to substantially prevent drafting of the assembly during subsequent stretching, subsequently stretching the twisted assembly and setting the stretch. Staple fibers having reduced diameters are provided as a result of the stretching process.

    Stretching of staple fibres
    7.
    发明专利
    Stretching of staple fibres 未知

    公开(公告)号：AU645026B2

    公开(公告)日：1994-01-06

    申请号：AU6166990

    申请日：1990-08-16

    Applicant: COMMW SCIENT IND RES ORG

    Inventor： PHILLIPS DAVID GRAHAM ,  WARNER JOHN JAMES

    IPC: D01H5/28 ,  D01H5/22 ,  D02G1/02 ,  D02J1/22

    Abstract: A process for stretching natural staple fibers to reduce the diameter includes the steps of treating a substantially untwisted traveling assembly of natural fibers to plasticize the natural fibers, twisting the traveling assembly sufficiently to substantially prevent drafting of the assembly during subsequent stretching, subsequently stretching the twisted assembly and setting the stretch. Staple fibers having reduced diameters are provided as a result of the stretching process.

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