Patents by Inventor Shunjun YANG

Shunjun YANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for producing profiled fibers having low broken filament rate by polyester FDY process
    Patent number: 12680201
    Abstract: A method for preparing profiled fibers with low lousiness rate by a polyester FDY process is provided, when preparing profiled fibers by the FDY process, during the operation of a yarn path, the horizontal and longitudinal positions of wire guide ceramic pieces on the pre-entangling wire guide frame are adjusted to maintain vertical alignment of the filament bundle in the pre-entangling device and achieve optimal jitter effect, to prepare profiled fibers with a low lousiness rate; when the profiled fibers are triangular profiled fibers, the lousiness rate is 0.35-0.65%; when the profiled fibers are trilobal profiled fibers, the lousiness rate is 0.85-1.25%; when the profiled fibers are flat profiled fibers, the lousiness rate is 0.5-0.85%.
    Type: Grant
    Filed: September 22, 2023
    Date of Patent: July 14, 2026
    Assignee: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.
    Inventors: Jianguang Zhang, Yonglin Zou, Xinzhao Hu, Lixin Yin, Shunjun Yang, Chengqian Zhu, Yu Li, Shouzuo Liu
  • METHOD FOR PRODUCING PROFILED FIBERS HAVING LOW BROKEN FILAMENT RATE BY POLYESTER FDY PROCESS
    Publication number: 20260002293
    Abstract: A method for preparing profiled fibers with low lousiness rate by a polyester FDY process is provided, when preparing profiled fibers by the FDY process, during the operation of a yarn path, the horizontal and longitudinal positions of wire guide ceramic pieces on the pre-entangling wire guide frame are adjusted to maintain vertical alignment of the filament bundle in the pre-entangling device and achieve optimal jitter effect, to prepare profiled fibers with a low lousiness rate; when the profiled fibers are triangular profiled fibers, the lousiness rate is 0.35-0.65%; when the profiled fibers are trilobal profiled fibers, the lousiness rate is 0.85-1.25%; when the profiled fibers are flat profiled fibers, the lousiness rate is 0.5-0.85%.
    Type: Application
    Filed: September 22, 2023
    Publication date: January 1, 2026
    Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.
    Inventors: Jianguang ZHANG, Yonglin ZOU, Xinzhao HU, Lixin YIN, Shunjun YANG, Chengqian ZHU, Yu LI, Shouzuo LIU