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    MULTI-COMPONENT FIBER SUITABLE FOR PRODUCTION OF FINE FIBER BUNDLE AND PRODUCTION OF SAID FIBER
    12.
    发明专利
    MULTI-COMPONENT FIBER SUITABLE FOR PRODUCTION OF FINE FIBER BUNDLE AND PRODUCTION OF SAID FIBER 失效

    公开(公告)号：JPS63105112A

    公开(公告)日：1988-05-10

    申请号：JP25154386

    申请日：1986-10-21

    Applicant: KURARAY CO

    Inventor： KOGAME KUNIO ,  MAKIMURA MASARU ,  SATO TOSHIAKI

    IPC: D01F8/06 ,  D01F8/10 ,  D01F8/12

    Abstract: PURPOSE:To obtain a multi-component fiber capable of easy production of fine fiber bundles of good yarn divisibility by water treatment, by melt blending each specific (modified)polyvinyl alcohol and polymer followed by spinning. CONSTITUTION:A melt spinning is made using (A) as the dispersion medium, a (modified)polyvinyl alcohol with a saponification degree 50-98mol% satisfying the relationship between saponification degree X mol% and polymerization degree P : logX+logP=3.7-4.3 and (B) as the dispersion component, a melt- spinnable polymer differing in the solubility to solvent from that of the component A (e.g., polypropylene) followed by quenching by e.g., cooling air flow and then winding, thus obtaining the objective multi-component fiber.

    FIBER INTERLACED BODY AND ITS PRODUCTION
    14.
    发明专利
    FIBER INTERLACED BODY AND ITS PRODUCTION 失效

    公开(公告)号：JPS6312744A

    公开(公告)日：1988-01-20

    申请号：JP15763286

    申请日：1986-07-03

    Applicant: KURARAY CO

    Inventor： MAKIMURA MASARU ,  KOGAME KUNIO

    IPC: D04H1/42 ,  D04H1/435 ,  D04H1/4382 ,  D04H1/44 ,  D04H1/482 ,  D04H1/485 ,  D04H1/50 ,  D04H1/54 ,  D04H1/541

    Abstract: A fiber entanglement is provided which is characterized in that it is a three-dimensional entanglement integratedly composed of elastic fibers (A) each being a fine-denier fiber bundle or having a porous fiber structure as seen on a fiber cross section with a number of irregular-shaped pores extending in the fiber axis direction, nonshrinkable, nonelastic fibers (B) and shrinkable, nonelastic fibers (C), that the fibers A are at least partly bonded or fused together at points of contact with one another and bring about a taut condition, that the nonshrinkable, nonelastic fibers B are folded several times over by means of the elastic fibers A and shrinkable, nonelastic fibers C. This fiber entanglement is useful as a base material for leather-like sheet materials.

    POLYURETHANE-BASED MULTICOMPONENT FIBER
    16.
    发明专利
    POLYURETHANE-BASED MULTICOMPONENT FIBER 失效

    公开(公告)号：JPH03260118A

    公开(公告)日：1991-11-20

    申请号：JP5869890

    申请日：1990-03-08

    Applicant: KURARAY CO

    Inventor： YAMAZAKI TAKESHI ,  KOGAME KUNIO

    IPC: D01F8/04 ,  D01D5/32 ,  D01F8/06 ,  D01F8/16 ,  H01F41/02

    Abstract: PURPOSE:To obtain the subject fiber having a stable fiber phase by dispersing a specified ratio of a specified super ultrafine polyolefin fiber, etc., parallel to the fiber axis in the polyurethane component mentioned below of a lamination-type multicomponent fiber composed of a thermoplastic polyurethane and a thermoplastic polymer immiscible therewith. CONSTITUTION:A thermoplastic polyurethane containing 1-15wt.% polyolefin or polystyrene and a thermoplastic polymer (e.g. polyamide) immiscible with the above-mentioned polyurethane are respectively dissolved in different dissolution systems, laminated into a thin layer and then spun to obtain the objective polyurethane-based multi-component fiber containing super ultrafine polyolefin or polystyrene fiber having =500 aspect ratio and dispersed parallel to the fiber axis in the polyurethane component. The objective fiber thus prepared is suitable, e.g. as a fiber for constituting a leather- like sheet-shaped material.

    POLYURETHANE-BASED MULTICOMPONENT FIBER
    17.
    发明专利
    POLYURETHANE-BASED MULTICOMPONENT FIBER 失效

    公开(公告)号：JPH03260117A

    公开(公告)日：1991-11-20

    申请号：JP5869790

    申请日：1990-03-08

    Applicant: KURARAY CO

    Inventor： YAMAZAKI TAKESHI ,  KOGAME KUNIO

    IPC: D01F8/04 ,  D01D5/34 ,  D01F8/06 ,  D01F8/16

    Abstract: PURPOSE:To obtain the subject fiber having a stable fiber phase, capable of continuously spinning for a long hour and suitable for a leather-like sheet material by using a thermoplastic polyurethane as a dispersion medium component and a specified thermoplastic polymer immiscible with the above-mentioned polyurethane as a dispersed component. CONSTITUTION:A thermoplastic polyurethane preferably having 0.7-1.8 intrinsic viscosity (eta) and containing 35-50wt.% hard segment (in case diol compound, etc., is used as chain-lengthening material) is used as a dispersion medium component 2, and a nonelastic polymer (e.g. 6-nylon) is used as a dispersed component to obtain a substantially continuous ultrafine fiber component 1. In the above- mentioned dispersion medium component, 1-15wt.% high-fluidity polyolefin (e.g. polyethylene) or polystyrene preferably having 10-60g/10min MFR(melt flow rate) value is mixed, and the average diameter and the aspect ratio of the above-mentioned polyolefin or polystyrene as a super ultrafine fiber component 3 are made =500, respectively, thus obtaining the objective fiber.

    PRODUCTION OF ULTRAFINE FIBER SHEET
    20.
    发明专利
    PRODUCTION OF ULTRAFINE FIBER SHEET 失效

    公开(公告)号：JPH02160964A

    公开(公告)日：1990-06-20

    申请号：JP25145689

    申请日：1989-09-26

    Applicant: KURARAY CO

    Inventor： MAKIMURA MASARU ,  YAMASHITA SADAO ,  KOGAME KUNIO

    IPC: D04H1/4382

    Abstract: PURPOSE:To readily obtain the subject product having excellent fiber strength, less unevenness, flexibility, drapability and stretchability by performing a specific treatment to the fiber sheet comprising latently releasable fibers of specific joint-type multicomponent fiber. CONSTITUTION:At first, a fiber sheet is made using latently releasable fibers composed of joint-type multicomponent fiber in which (A) a polymer selected from polyamide, polyester and polyolefin and (B) a polymer selected from polyester elastomer, polyamide elastomer and polyurethane elastomer are mutually joined and at least a part of the joined interface is led to the fiber surface and having releasability of the joined interface releasing with aqueous solution having

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