RIBBON LIKE FILAMENTS AND SYSTEMS AND METHODS FOR PRODUCING THE SAME

    公开(公告)号:US20230045733A1

    公开(公告)日:2023-02-09

    申请号:US17957602

    申请日:2022-09-30

    发明人: Anthony CASCIO

    摘要: Various implementations include a melt-spun filament that has a radial cross section that has two substantially parallel linear perimetrical sections and first and second curved perimetrical sections. The first curved perimetrical section extends between first ends of the linear perimetrical sections, and the second curved perimetrical section extends between second ends of the linear perimetrical sections. The curved perimetrical sections are convex. According to some embodiments, the curved perimetrical sections are semi-circular or semi-elliptical. A plurality of melt-spun filaments may be included in a bundle of filaments and/or a yarn made with the melt-spun filaments. In addition, a spinneret plate for spinning the melt-spun filaments and a method of making the melt-spun filaments is also provided.

    SHEATH-CORE COMPOSITE FIBER AND MULTIFILAMENT

    公开(公告)号:US20220341060A1

    公开(公告)日:2022-10-27

    申请号:US17641018

    申请日:2020-10-02

    IPC分类号: D01D5/34 D01F8/04 D04H1/4391

    摘要: A sheath-core composite fiber is composed of two or more polymers, wherein a core component having a multifoliate shape with three or more projections is completely covered by a sheath component in a fiber cross-section of the sheath-core composite fiber, while having a ratio of the maximum thickness Smax of the sheath component to the minimum thickness Smin of the sheath component, namely Smax/Smin of 5.0 or more. A multifilament is composed of the core component of this sheath-core composite fiber. The sheath-core composite fiber and multifilament are suitable for the achievement of a good textile that is comparable to natural silk.