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    Crimped synthetic filament having special cross-sectional profile
    1.
    发明授权
    Crimped synthetic filament having special cross-sectional profile 失效
    具有特殊交叉剖面形状的合成纤维

    公开(公告)号：US3623939A

    公开(公告)日：1971-11-30

    申请号：US3623939D

    申请日：1968-06-28

    Applicant: TORAY INDUSTRIES

    Inventor： ONO TERUMICHI ,  HAGA TSUNEO ,  TAKAGI YASUO ,  FUJIOKA KOTARO ,  SAITO HIROSHI

    IPC: D01D5/22 ,  D01D5/23 ,  D01D5/253 ,  D02G3/00

    CPC classification number: D01D5/23 ,  D01D5/22 ,  D01D5/253 ,  Y10T428/2922 ,  Y10T428/2969 ,  Y10T428/2973

    Abstract: Crimped synthetic filament characterized by having special cross-sectional profile remarkably deformed from circular or polygonal ones of the conventional synthetic filaments. Peculiarity of the profile, being provided with at least tripartite branches extending from a central portion, is defined by the relations among number of crimps, measure of the crosssectional profile, width and length of branches and areas of the cross section and of the smallest circumscribed circle. A manufacturing method characterized by using a spinneret having orifices of special profiles and definition of the ejecting position of coagulating air. Durable resilience to bending, enhanced covering effect of the filaments obtained with effective elimination of waxy touch or remarkable pill formation distinguished from conventional synthetic filaments are brought about by the invention.

    Multiple yarn package take-up
    2.
    发明授权
    Multiple yarn package take-up 失效
    多纱包装

    公开(公告)号：US3690575A

    公开(公告)日：1972-09-12

    申请号：US3690575D

    申请日：1970-11-05

    Applicant: TORAY INDUSTRIES

    Inventor： ITO SHOJI ,  FUJIOKA KOTARO ,  OKAMOTO MITSUHIRO ,  KIKUCHI TETSUYA

    IPC: B65H54/50 ,  B65H57/28 ,  B65H67/056 ,  B65H54/02

    CPC classification number: B65H54/2842 ,  B65H57/28 ,  B65H67/056 ,  B65H2701/31

    Abstract: Multiple package filament winding apparatus having at least two take-up positions placed right and left as a pair, arranged for taking up yarns alternately, fed by a traversing roller which has two traversing slots separated right and left, and two alternately crossing transfer slots, each of which connects into each of the traversing slots.

    Abstract translation: 具有至少两个卷绕位置的多个包装细丝卷绕装置，其被布置为交替地卷绕纱线，由具有两个左右分离的横向狭槽的横动辊和两个交替交叉的传送槽， 每个连接到每个横向槽中。

    3.
    发明专利
    未知

    公开(公告)号：DE1760771A1

    公开(公告)日：1971-02-25

    申请号：DE1760771

    申请日：1968-07-01

    Applicant: TORAY INDUSTRIES

    Inventor： ONO TERUMICHI ,  HAGA TSUNEO ,  TAKAGI YASUO ,  FUJIOKA KOTARO ,  SAITO HIROSHI

    IPC: D01D5/22 ,  D01D5/23 ,  D01D5/253 ,  D01D

    Abstract: 1,218,066. Crimped synthetic filaments of branched cross-section. TORAY INDUSTRIES Inc. 27 June, 1968 [30 June, 1967 (3)], No. 30818/68. Heading B5B. A crimped synthetic filament is characterized by a cross-section having at least three extended branches and defined by the following equations: (a) - 0À125 log 10 D + 1À000 # Log 10 N # -0À589 log 10 D + 2À301; (b) 0À606 # log 10 R # 0À111 log 10 D + 0À845; (c) 1 # D # 25. In the above, D equals the fineness of the filament in denier, N equals the number of crimps per 1 inch length of said filament, and R is the measurement of the cross-section of said filament by the method described in the Specification. Cross-sections of such filaments are shown in Figs. 1A to 1G. The crimped synthetic filament may be further characterized by said cross-section being defined by the following equation: (d) 3À0 # x/y # 11À0; (e) 0À15 # X/Y # 0À60. In these equations, x equals the sum of the lengths of the branches of the crosssection of the filament, y equals the average width of the branches of the cross-section of said filament, X equals the cross-sectional area of said filament, and Y is equal to the area of the smallest circumscribed circle of the crosssection of the filament. The filament may be further characterized by the minimum value of the moment of inertia of the area of the crosssection of the filament being more than 1À5 times as large as that of an imaginary circle having the same area and the product of tenacity and breaking elongation of the filament being smaller than 100. The filament may be further characterized by being crimped due to the variation in the thermal shrinkability across its transverse cross-section. Preferably the filament is made of poly #-caproamide, but may be made of other polyamides e.g. polyhexamethylene adipamide, polyesters as for example polyethylene terephthalate, and polyolefins as for example polypropylene or polyethylene. The filaments may be made by melt extrusion of a thermoplastic synthetic polymer through a spinneret having a plurality of orifices each having a cross-section with at least three extending branches whose length is considerably larger than the width thereof, ejecting cooling air strongly on to one side only of an advancing stream of said extruded filaments at a position from 5 to 15 cms. below an outlet of said spinneret and taking up said solidified filaments at a take-up speed higher than 3000 m. per minute. The length of the branches of the spinneret may range between 0À5 and 2À5 mm. and the width of said branches may be smaller than a quarter of said length but larger than 0À07 mm. Fig. 8 illustrates a suitable spinneret orifice. Using the apparatus of Fig. 7, filaments 14 are extruded through the orifices of the spinneret 12 of the melt-spinning apparatus and subjected to cooling air while passing through cooling chamber 13, oil is fed by an oiling roller 15 positioned downstream on the cooling chamber 13 in the same manner as in conventional melt-spinning and the filaments are taken up on to a package 18 at a take-up speed higher than 3000 m. per minute by a drive roller 16 and a take-up roller 17. Cooling air is conducted into cooling chamber 13 through an air conduit 19 and ejected on to one side only of the filaments 14 as shown by the arrows. Ejection of the cooling air must be performed at from 5 to 15 cms. below the outlet of spinneret 12. The ejecting speed of the cooling air should range, in accordance with a number of crimps required for the filament manufactured, from 10 to 100 m. per minute, especially from 15 to 50 m. per minute, and the temperature of the cooling air should range from 15‹ to 22‹ C. In practice, the upper limit of the take-up speed of the filament is 6000 m. per min. By subjecting the multifilament yarn thus manufactured to steam treatment in relaxed condition, numerous curl-shaped crimps can be developed on the multifilament yarn. Examples are given.

    4.
    发明专利
    未知

    公开(公告)号：DE3481531D1

    公开(公告)日：1990-04-12

    申请号：DE3481531

    申请日：1984-12-19

    Applicant: TORAY INDUSTRIES

    Inventor： HASEGAWA KATSUMI ,  OHNO MICHIO ,  SAITO ISOO ,  FUJIOKA KOTARO

    IPC: D01D5/098 ,  D01D5/092 ,  D01D13/00 ,  D01F6/60 ,  D01F6/62

    Abstract: A thermoplastic polymer yarn is spun into a spinning tube charged with a pressurized gas of more than 1 kg/cm2G and withdrawn through a yarn exit provided with a unique sealing means which substantially prevents the charged gas from leakage but allows passage of the yarn out from the spinning tube. The resultant yarn has a high molecular orientation due to the improved quenching effect and the increase of resistance against yarn travelling of the charged gas.

    PRODUCTION OF MULTIFILAMENT YARN
    7.
    发明专利
    PRODUCTION OF MULTIFILAMENT YARN 失效

    公开(公告)号：JPS61215708A

    公开(公告)日：1986-09-25

    申请号：JP5344285

    申请日：1985-03-19

    Applicant: TORAY INDUSTRIES

    Inventor： NISHIKAWA YUTAKA ,  MIZUNO MASAHARU ,  FUJIOKA KOTARO

    IPC: D01F6/04 ,  D01D5/04 ,  D01D10/00 ,  D01D10/06

    Abstract: PURPOSE:To obtain the titled yarn having high tenacity and modulus and excellent opening property, free from the sticking of the filaments, by extruding a low-concentration solution of a polymer through plural nozzles, removing the solvent from the filaments with an extractant and drying the filament by blasting gas against the filaments while applying vibration to each filament. CONSTITUTION:A polymer such as PE having a weight-average molecular weight of preferably >=1,000,000 is dissolved in a solvent such as decalin to a concentration of 0.5-25wt% to obtain a spinning dope. The dope is extruded through plural nozzles into a cooling bath. The obtained gelatinous filaments are introduced into an extraction bath composed of an extractant such as acetone to remove the solvent from the filaments, or the filaments extruded in air are introduced into a coagulation bath and the coagulated filaments are introduced into an extraction bath to remove the solvent. The objective yarn can be produced by drying the obtained yarn with a gas such as air (preferably at 20-150 deg.C) blasted against the yarn while applying vibration to each filament.

    PRODUCTION OF POLYETHYLENE FIBER
    10.
    发明专利
    PRODUCTION OF POLYETHYLENE FIBER 失效

    公开(公告)号：JPH01162817A

    公开(公告)日：1989-06-27

    申请号：JP31984887

    申请日：1987-12-16

    Applicant: TORAY INDUSTRIES

    Inventor： NISHIKAWA YUTAKA ,  MITSUYOSHI TAKEHIKO ,  FUJIOKA KOTARO

    IPC: C08L23/06 ,  C08L23/00 ,  D01F6/04 ,  D01F6/46

    Abstract: PURPOSE:To obtain the subject fiber of high strength and high modulus, low in creep, thus useful as an industrial fibrous material, by heat treatment at specified temperatures of a high-molecular weight polyethylene solution incorporated with an organic peroxide followed by spinning and then hot drawing of the resultant undrawn yarn. CONSTITUTION:A solution of polyethylene with a weight-average molecular weight of >=700,000 (pref. >=2,000,000), incorporated with pref. 0.05-10wt.% of an organic peroxide (e.g., di-t-butyl peroxide, pref. soluble in the solvents for polyethylene) is heat-treated at temperatures at or higher than the swelling temperature of said polyethylene followed by spinning. The resultant undrawn yarn is then put to hot drawing pref. at 100-160 deg.C by a factor of >=25, thus obtaining the objective fiber.

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