ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,779,766, issued on Nov. 3, was assigned to TREDEGAR SURFACE PROTECTION LLC (N. Chesterfield, Va.).

"Method for manufacturing a masking film and masking film manufactured thereby" was invented by Guangkai Wang (Guangzhou, China), Jinwang Xu (Guangzhou, China), Zehua Ye (Guangzhou, China) and Chao Wang (Guangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a masking film includes forming a molten polymer web that includes at least one polymer, spraying a fluid on one side of the molten polymer web to rapidly cool a random pattern of locations on the one side of the molten polymer web, and cooling the molten polymer web ...