ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,728,570, issued on Sept. 8, was assigned to CCILU International Inc. (Taichung City, Taiwan).
"Method for making foamed shoe material" was invented by Chih-Jen Hsu (Taichung City, Taiwan), Chia-Ming Hsu (Taichung City, Taiwan) and Yi-Ju Huang (Taichung City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for making foamed shoe materials includes mixing r-PET and EVA with a compatibilizer for melt modification, a new polymer alloy is formed. The polymer alloy is then extruded into strips with an screw extruder under a temperature of 160deg C. to 245deg C. and an average shear rate of 100/sec to 300/sec, and at an extrusion rate of 100 kg/...