ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,182, issued on Nov. 25, was assigned to Dongguan He Xin Packing Co. Ltd. (Dongguan, China).
"Sealed bag based on folding process and processing method thereof" was invented by Yam Man Tsoi (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a sealed bag and a processing method thereof, the method including presetting a folding baseline on a base paper piece, and performing a first plastic sealing on a gap between an overlapping area of the second folding portion and the first folding portion so as to form a paper roll; supporting the paper roll so as to perform side pressing on the paper roll so that the paper roll is embed...