Patents Represented by Law Firm Sughrue, Mion, Zinn, 2acpeak and Seas
  • Process for producing preoxidized fiber spun yarns
    Patent number: 4304746
    Abstract: A process for producing preoxidized fiber spun yarns is described comprising subjecting an acrylonitrile fiber tow to a preoxidation, applying a surface active agent, stretch cutting without crimping, crimping to form slivers, processing in a gilling step, and spinning; according to this process, short fibers and powders of fibers are formed to a lesser extent, and nebs, slubs and flies, etc. are caused to a lesser extent, and preoxidized fiber spun yarns having high quality are obtained in a high yield.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: December 8, 1981
    Assignee: Toho Beslon Co., Ltd.
    Inventors: Kozo Yamada, Takenobu Hasebe, Kazuhisa Saito