US Patent Issued to Innovative Fiber on March 18 for "Paperboard trays with recyclable interior liner forming leakproof corners" (Wisconsin Inventor)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,308, issued on March 18, was assigned to Innovative Fiber LLC (Delafield, Wis.).

"Paperboard trays with recyclable interior liner forming leakproof corners" was invented by Jeffrey S. Covelli (Delafield, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus and method utilizes a forming machine which includes a mandrel and forming plate each shaped to conform the paperboard and/or corrugated material blank passing through the mandrel into the desired configuration for a leak-proof tray. The blank includes a layer of a suitable paperboard and/or corrugated material, and a layer of leak-proof plastic or paper material disposed over one sid...