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    Extrusion die for multi core composite - filaments offers stable long-run operation
    87.
    发明专利
    Extrusion die for multi core composite - filaments offers stable long-run operation 未知

    公开(公告)号：DE2040802A1

    公开(公告)日：1972-03-02

    申请号：DE2040802

    申请日：1970-08-17

    Applicant: TORAY INDUSTRIES

    Inventor： OKAMOTO MIYOSHI ,  ASHIDA KEIICHI ,  WATANABE KOJI ,  TANIGUCHI SHINZO

    IPC: D01D5/36

    Abstract: Die for forming composite filaments has several cores of one filament material dispensed in a matrix of a second material. The core streams discharge into a chamber which converges at an angle Theta of =75 degrees and which is fed with an annular and pref. also an axial stream of the matrix material. Pref. subsidiary passages sheath each core sub-filament in matrix material (co-axial or eccentric). For preparation of multi-core filaments or for manufacture of very fine filaments by subsequently removing the matrix material. Die design maintains stable core and matrix patterns throughout long prodn. runs - the flow path of the core filament streams is almost linear to avoid material hang-up and degradation. Sheathing of each core stream by matrix material avoids internal coalescence of the core streams.

    88.
    发明专利
    未知

    公开(公告)号：DE1635664A1

    公开(公告)日：1971-06-09

    申请号：DET0035042

    申请日：1967-10-17

    Applicant: TORAY INDUSTRIES

    Inventor： OKAMOTO MIYOSHI ,  WATANABE KOJI ,  OTSU SHIGA ,  NUKUSHINA YASUHIKO ,  KONOSU MAKOTO

    IPC: D04H1/58 ,  D04H1/64

    Abstract: 1,218,191. Laminated fibrous webs; composite filaments. TORAY INDUSTRIES Inc. 12 Oct., 1967 [17 Oct., 1966; 21 Oct., 1966], No. 46619/67. Headings B5B and B5N. [Also in Divisions B2 and D1] A leather substitute felt is made by forming a plurality of filaments each consisting of a bundle of fibres which extend substantially parallel to one another throughout their lengths and which are bonded together, forming a web from these filaments, entangling the filaments in the web and removing the binder whereby the fibres in each bundle are free to move longitudinally to one another. The filaments can be made by sizing bundles of pre-spun multi-filaments, or by spinning at least two components simultaneously through a nozzle to form the fibres as islands in a matrix component. The shape and arrangement of the fibres within the matrix may be in a pattern or at random (see Figs. 2 and 3, not shown). The matrix component is subsequently eliminated. The filaments, fibres or matrix component can be formed from specified polyesters, polyamides, cellulosic polymers, polyvinyls, polyacrylonitriles, polyurethanes including polyolefine-glycol type polyurethanes, polyolefines, polyoxyalkylenes, polyfluoro compounds. The filaments can be 25-100 mm. long and 1-20 denier, whilst the fibres can be 0À005-0À5 denier. The size can be starch, polyvinyl alcohol, polyvinyl acetate, polyacrylamide, polyvinyl pyrolidone, ployvinyl latex, polybutadiene, polyurethane or polyester. The size or matrix component can be eliminated by solution or heating. The filaments can be blended with ordinary polyester fibres and may be formed into a web by carding or on a cross lapper or random webber. The filaments can be drawn and crimped. The fibres can be shrunk. The web can be needle punched singly or together or with other webs, felts, woven or knitted cloths. Elastic materials can be applied to the web in solution, emulsion solid form by immersion and coagulation, spraying, foaming, printing or coating. The elastic material can be acrylonitrile-butadiene copolymer, polyisoprene, ethylene-propylene copolymer, acrylate polymer or copolymer, silicon rubber, polyurethane, polyvinyl acetate or polyvinyl chloride. Alternatively, the web can be treated with nylon polyvinyl chloride or polyethylene. The formed web can be hot-pressed, dyed, sliced, coated, water-proofed, embossed or buffed. The coating agent can be a mixture of polyurethane and carbon black.

    89.
    发明专利
    未知

    公开(公告)号：DE2023214A1

    公开(公告)日：1970-11-26

    申请号：DE2023214

    申请日：1970-05-12

    Applicant: TORAY INDUSTRIES

    Inventor： OKAMOTO MIYOSHI ,  MIZUGUCHI SHUNJI ,  WATANABE KOJI

    IPC: B29C47/06 ,  D01D5/36 ,  D04H1/42 ,  D01D5/28

    Abstract: Collagen fiber-like synthetic superfine filament bundles are prepared through a process in which an "islands-in-a-sea" type composite filament is formed from a sea constituent polymeric material and an island constituent polymeric composition consisting of at least two polymers different from each other, at least one of which has a content of 7 to 93 percent based on the composition, the sea constituent is removed for obtaining a bundle of island constituent superfine filaments and then at least one polymer in the resultant superfine filaments is removed in order to obtain the collagen fiber-like synthetic superfine filament bundles.

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