Patents by Inventor Shunli XIAO

Shunli XIAO 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 preparing PET/PTT parallel complex filament with high self-crimpiness
    Patent number: 12000065
    Abstract: The present invention discloses a method for preparing a PET/PTT parallel complex filament with high self-crimpiness, wherein PET and PTT are sliced, dried and crystallized, and then fused separately and subjected to extrusion molding through a parallel-type spinneret plate; oil is applied after cooling; then level 1-3 drafting and heat setting treatment are adopted; and during drafting, a total drafting rate is controlled to be 3 to 3.5, wherein the level-1 drafting rate is 2.8 to 3.0 at a temperature controlled to be 75 to 80° C., according to the method for preparing the PET/PTT parallel complex filament with high self-crimpiness, methods like multi-level drafting for increasing the drafting rate are adopted, and the effects of improving the fiber strength, moderately lowering the breaking elongation, and greatly improving the self-crimpiness are achieved.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: June 4, 2024
    Assignees: TONGKUN GROUP CO., LTD., ZHEJIANG SCI-TECH UNIVERSITY
    Inventors: Xuzhen Zhang, Wenxing Chen, Yanlin Sun, Xiuhua Wang, Shaobo Liu, Xueyan Lin, Shunli Xiao
  • METHOD FOR PREPARING PET/PTT PARALLEL COMPLEX FILAMENT WITH HIGH SELF-CRIMPINESS
    Publication number: 20220205141
    Abstract: The present invention discloses a method for preparing a PET/PTT parallel complex filament with high self-crimpiness, wherein PET and PTT are sliced, dried and crystallized, and then fused separately and subjected to extrusion molding through a parallel-type spinneret plate; oil is applied after cooling; then level 1-3 drafting and heat setting treatment are adopted; and during drafting, a total drafting rate is controlled to be 3 to 3.5, wherein the level-1 drafting rate is 2.8 to 3.0 at a temperature controlled to be 75 to 80° C., according to the method for preparing the PET/PTT parallel complex filament with high self-crimpiness, methods like multi-level drafting for increasing the drafting rate are adopted, and the effects of improving the fiber strength, moderately lowering the breaking elongation, and greatly improving the self-crimpiness are achieved.
    Type: Application
    Filed: August 25, 2020
    Publication date: June 30, 2022
    Inventors: Xuzhen ZHANG, Wenxing CHEN, Yanlin SUN, Xiuhua WANG, Shaobo LIU, Xueyan LIN, Shunli XIAO