ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,472,586, issued on Nov. 18, was assigned to PRECO LLC (Somerset, Wis.).
"Laser-made microperforations in films" was invented by Mark Daun (Hudson, Wis.), Matt Lackner (Prescott, Wis.), James Bucklew (Somerset, Wis.), Kurt Hatella (New Richmond, Wis.) and Karl Weber (Stillwater, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A laser system and method is used to micro-drill a web producing holes of approximately 85 micro metre or less. The laser system comprises a laser beam having a wavelength in the range of approximately 2 to 6 microns and the focal point of the laser beam being steered onto a surface of the moving web wherein the web is moving. ...