ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,728,580, issued on Sept. 8, was assigned to Addex Inc. (Newark, N.Y.).
"High performance cooling element" was invented by Robert E. Cree (Conroe, Texas) and William J. Randolph (Farmington, N.Y.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to an external cooling system for a molten film tube produced by a blown film tubular extrusion process, comprised of a divergent cooling element with a divergent cooling interface containing a cooling gas deflector spaced adjacent to the molten film tube and providing an expelled cooling gas (i) in a path opposing the flow of the molten film tube toward a first exit gap and (ii) in a p...