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    Polyester composite filament yarn having stable crimps
    4.
    发明授权
    Polyester composite filament yarn having stable crimps 失效
    聚酯复合纤维纱具有稳定的弹性

    公开(公告)号：US3616634A

    公开(公告)日：1971-11-02

    申请号：US3616634D

    申请日：1969-06-04

    Applicant: TORAY INDUSTRIES

    Inventor： TOMIITA KAZUO ,  TAKASE TAKESHI ,  FUKUHARA MOTOTADA ,  SANO CHIKARA ,  OHMAE NOBUO

    IPC: D01D5/30 ,  D02G3/04 ,  D02J1/12 ,  D03D13/00

    CPC classification number: D01D5/32 ,  D01D5/22 ,  Y10S57/905 ,  Y10T428/2909 ,  Y10T428/2931

    Abstract: A POLYESTER COMPOSITE MULTIFILAMENT YARN COMPOSED OF A PLURALITY OF INDIVIDUAL FILAMENTS HAVING COMBINED PROPERTIES OF THE SHRINKING PROPERTIES RESTRICTED AS FOLLOWS.

    PERCENT

    (1) A RANGE OF APPARENT SHRINKAGE WHEN THE YARN IS TREATED IN HOT WATER AT A STRETCHED CONDITION OF APPROXIMATELY 5 MG./DENIER 0-20 (2) SUBSTANTIAL SHRINKAGE WHEN THE YARN IS TREATED BY THE SAME MANNER AS IN CASE OF MEASURING THE APPARENT SHRINKAGE OF YARN LOWER THAN 3

    THE ABOVE-MENTIONED COMPOSITE MULTIFILAMENT YARN CAN BE ALSO DEFINED WITH RESPECT TO THE DENSITY OF FILAMENT, OR NUMBER OF CRIMPS AFTER TREATMENT IN BOILING WATER. THE PREFERABLE CONDITION OF THE DENSITY OF FILAMENT IS RESTRICTED AT MORE THAN 1.3850 WHILE THE NUMBER OF CRIMPS IS RESTRICTED A RANGE FROM 10 TO 35/CM.

    FIRE RETARDANT SHEATH AND CORE CONJUGATE FIBRES
    9.
    发明专利
    FIRE RETARDANT SHEATH AND CORE CONJUGATE FIBRES 未知

    公开(公告)号：GB1279357A

    公开(公告)日：1972-06-28

    申请号：GB4142570

    申请日：1970-08-28

    Applicant: TORAY INDUSTRIES

    Inventor： YANAGI MASANA ,  NAKAMURA ITARU ,  OHOSUGI MASAYUKI ,  TAKIZAWA KIYOSI ,  KAKINAMI MASANORI ,  SANO CHIKARA

    IPC: D01F1/10 ,  D01F8/04

    Abstract: 1279357 Fireproofed conjugate filaments TORAY INDUSTRIES Inc 28 Aug 1970 41425/70 Heading B5B A conjugate sheath and core fibre comprises a core polymer which contains more than 5% by weight and less than 50% of a halogenated fire retardant compound and more than 5% by weight of a phosphorus-containing fire-retardant compound. The core component contains those compounds in such quantities that the halogen in the core component provided by the halogenated fire-retarding compound is between 3 and 50 times the weight of the phosphoruscontaining fire-retardant compound present in the core. The sheath polymer may also contain these fire-retarding compounds but, when it does, the percentage by weight of both of them is less than that obtaining in the core polymer. In addition, the maximum quantity of the halogenated fire-retardant is that which gives a halogen content of 10% by weight of the sheath polymer. The fibres are produced conventionally by melt-spinning the polymeric materials, the fireretardant compounds being present in the melt. The invention is particularly suitable for use with polyamides such as Nylon 6, Nylon 6,6 and polyesters such as homo- or copolymers of polyethylene terephthalate. Preferred phosphorus-containing fire-retardants are trialkyl and triaryl phosphates and phosphites and preferred halogenated compounds have the general formula C 6 H 4 X m Y n where X is chlorine or bromine, Y a plurailty of specified alkyl, aryl and alkylaryl radicals and m and n integers such that m is from 1 to 6 and n from 0 to 5. The fibres retain the fire-retardant compounds under normal conditions of use, and undergo little yellowing or exposure to U.V. light.

    10.
    发明专利
    未知

    公开(公告)号：DE1785274A1

    公开(公告)日：1972-04-13

    申请号：DE1785274

    申请日：1968-09-05

    Applicant: TORAY INDUSTRIES

    Inventor： FUKUHARA MOTOTADA ,  UENO AKIRA ,  NIHEI ISAO ,  SANO CHIKARA

    IPC: D01D5/30 ,  D02G3/02

    Abstract: 1,195,957. Composite filaments. TORAY INDUSTRIES Inc. 3 Sept., 1968 [6 Sept., 1967], No. 41874/68. Heading B5B. [Also in Divisions D1-D2] A crimpable composite filament yarn comprises at least a single filament composed of two kinds of polyesters eccentrically arranged in the cross-section of the filament (including side-byside arrangement), the filament being provided with crimps the number of which is in the range 16-35 crimps/cm. after treatment with boiling water, the maximum stress of shrinkage of the filaments being larger than 50 mg./denier, and the temperature corresponding to said maximum stress being lower than 190‹ C. The difference in intrinsic viscosities of the polyesters is larger than 0À05. In a preferred embodiment the intrinsic viscosity of one polyester is in the range 0À6 to 0À85 and that of the other polyester is in the range 0À45 to 0À55. In the production of yarn, the two polymers are melted separately and spun together through a spinneret. A calm cylindrical zone is provided immediately following the spinneret and in front of a coagulating air stream. The strand of filaments is then collected into a package. The strand of filaments is then passed through a draw zone over a heated pin and a heated plate and wound into a cop. The drawn filament yarn is then passed through a thermal relaxation zone and the crimped yarn wound on to a bobbin. The yarn is used in the manufacture of crepe fabric and gives a " pebble " contraction of the fabric larger than 40%. Several examples of suitable polyesters are given in the Specification.

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