ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,052, issued on June 24.
"Double-layer cushioning structure and a preparation process thereof" was invented by Limin Yuan (Zhejiang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A double-layer cushioning structure and a preparation process thereof, relating to technical field of packaging products. It includes a buffer cover. Hollow double-wall structure in buffer cover play a good buffer role, when an outer wall is deformed inwards by impact of external force, reactive force will offset impact of external force to achieve buffer effect; first reinforcing ribs and second reinforcing ribs strengthens strength of inner and outer walls, thereby ...