ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,019, issued on March 3, was assigned to SUN HING PRINTING COMPANY Ltd. (Hong Kong).
"Manufacturing process for environmentally friendly paper packaging bag" was invented by Kenneth Chi Kin Chan (Hong Kong).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention discloses a manufacturing process for an environmentally friendly paper packaging bag. A paper film bag obtained by the invention completely uses paper for packaging and avoids the degradation problem caused by the use of plastic films, such that the paper film bag can be sufficiently degraded; to prevent adhesive diffusion during heat sealing, a special water-based heat-sensitive adhesiv...