US Patent Issued to Heedae Park, SAM BU FINE CHEMICAL on March 3 for "Manufacturing method of recycled polyester yarn using waste fabric" (South Korean Inventors)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,720, issued on March 3, was assigned to Heedae Park (Busan, South Korea) and SAM BU FINE CHEMICAL Co. LTD. (Gimhae-si, South Korea).

"Manufacturing method of recycled polyester yarn using waste fabric" was invented by Heedae Park (Busan, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method for manufacturing a recycled polyester yarn using waste fabric. The method includes steps of: adding a predetermined chain extender to a polyester resin in which waste fabric woven with polyester yarn is melted to prevent the viscosity of the melted recycled polyester resin from dropping, and by adding a low melting ...