Patents by Inventor Huijing ZHAO

Huijing ZHAO 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).

  • Water-repellent and lipophilic composite needle-punched nonwoven fabric and preparation method thereof
    Patent number: 11473238
    Abstract: The invention relates to a water-repellent and lipophilic composite needle-punched nonwoven fabric and a preparation method thereof. The method comprises the following steps: blending a PET fiber and a polyolefin-based fiber in a mass ratio of 3:1-1:3, and performing needle punching to obtain a composite needle-punched nonwoven fabric; carrying out hot-drying treatment on the composite needle-punched nonwoven fabric at 110-160° C. for 40-90 min; and carrying out water-repellent finishing on the hot-dried fabric using 50-70 mL/L of an aqueous solution of a modified resin-based fluorine-free waterproofing agent, and drying to obtain the water-repellent and lipophilic composite needle-punched nonwoven fabric, wherein the water-repellent finishing is dip rolling, the air pressure is 1.8 kPa and the liquid carrying rate is 160-230%.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: October 18, 2022
    Assignees: NANTONG TEXTILE AND SILK INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, SOOCHOW UNIVERSITY
    Inventors: Huijing Zhao, Yingmei Zhang
  • WATER-REPELLENT AND LIPOPHILIC COMPOSITE NEEDLE-PUNCHED NONWOVEN FABRIC AND PREPARATION METHOD THEREOF
    Publication number: 20210404114
    Abstract: The invention relates to a water-repellent and lipophilic composite needle-punched nonwoven fabric and a preparation method thereof. The method comprises the following steps: blending a PET fiber and a polyolefin-based fiber in a mass ratio of 3:1-1:3, and performing needle punching to obtain a composite needle-punched nonwoven fabric; carrying out hot-drying treatment on the composite needle-punched nonwoven fabric at 110-160° C. for 40-90 min; and carrying out water-repellent finishing on the hot-dried fabric using 50-70 mL/L of an aqueous solution of a modified resin-based fluorine-free waterproofing agent, and drying to obtain the water-repellent and lipophilic composite needle-punched nonwoven fabric, wherein the water-repellent finishing is dip rolling, the air pressure is 1.8 kPa and the liquid carrying rate is 160-230%.
    Type: Application
    Filed: August 16, 2018
    Publication date: December 30, 2021
    Inventors: Huijing ZHAO, Yingmei ZHANG