ALEXANDRIA, Va., June 6 -- United States Patent no. 12,280,570, issued on April 22, was assigned to TOPPAN INC. (Tokyo).
"Laminate" was invented by Haruna Kadoya (Tokyo) and Shigeki Kudo (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A laminate for forming a packaging bag including a substrate layer containing a crystalline polyester film, an adhesive layer, and a sealant layer containing the polyester film arranged in this order. The sealant layer has a ratio of a fracture elongation thereof to a thickness thereof which is 13%/um or less. The fracture elongation is a fracture elongation of the sealant layer as measured in a unit of 15 mm width thereof in an MD direction."
The patent was filed on Aug...