Patents by Inventor Wenge ZHENG

Wenge ZHENG 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).

  • Supercritical fluid injection foaming polylactide foam material and preparation method therefor
    Patent number: 12202179
    Abstract: The present application relates to a supercritical fluid injection foaming polylactide foam material and a preparation method therefor. The method includes: first obtaining a surface-modified cellulose nanofiber aqueous solution; then melting and blending the cellulose nanofiber aqueous solution and a polylactide twice; passing same through extrusion, cooling under water, and granulation so as to obtain a polylactide/cellulose nanofiber composite material; then plasticizing and melting the polylactide/cellulose nanofiber composite material in a microporous foaming injection molding machine; uniformly mixing same with a supercritical fluid foaming agent in the injection molding machine; injecting same into a mold cavity; and subjecting the resultant to post-treatment so as to obtain a polylactide foam material.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: January 21, 2025
    Assignee: NINGBO INSTITUTE OF MATERIALS TECHNOLOGY AND ENGINEERING, CHINESE ACADEMY OF SCIENCES
    Inventors: Long Wang, Wenge Zheng, Qian Ren, Lihua Zhang, Minghui Wu, Fei Wu, Haibin Luo
  • SUPERCRITICAL FLUID INJECTION FOAMING POLYLACTIDE FOAM MATERIAL AND PREPARATION METHOD THEREFOR
    Publication number: 20230054285
    Abstract: The present application relates to a supercritical fluid injection foaming polylactide foam material and a preparation method therefor. The method includes: first obtaining a surface-modified cellulose nanofiber aqueous solution; then melting and blending the cellulose nanofiber aqueous solution and a polylactide twice; passing same through extrusion, cooling under water, and granulation so as to obtain a polylactide/cellulose nanofiber composite material; then plasticizing and melting the polylactide/cellulose nanofiber composite material in a microporous foaming injection molding machine; uniformly mixing same with a supercritical fluid foaming agent in the injection molding machine; injecting same into a mold cavity; and subjecting the resultant to post-treatment so as to obtain a polylactide foam material.
    Type: Application
    Filed: September 11, 2020
    Publication date: February 23, 2023
    Inventors: Long WANG, Wenge ZHENG, Qian REN, Lihua ZHANG, Minghui WU, Fei WU, Haibin LUO