US Patent Issued to Superior Plastics Extrusion on March 17 for "Modification of polypropylene resins with nucleating agents to enhance mechanical and barrier properties of films" (Wisconsin, North Carolina Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,576,620, issued on March 17, was assigned to Superior Plastics Extrusion Co. Inc. (Putnam, Conn.).

"Modification of polypropylene resins with nucleating agents to enhance mechanical and barrier properties of films" was invented by Hari Parvatareddy (Appleton, Wis.) and Jimmy A. Shah (Rockingham, N.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "This invention relates to packaging applications. It generally relates to polyethylene or ethylene/Alpha-olefin copolymer based co-extruded, multi-layer films or sheets-rigid or flexible-for thermoforming into shaped containers such as packaging containers. Inter alia, the films have improved barrier propertie...