US Patent Issued to TOYO SEIKAN GROUP HOLDINGS on May 12 for "Packaging bag and packaging multilayer film to be used for producing the packaging bag" (Japanese Inventors)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,623,443, issued on May 12, was assigned to TOYO SEIKAN GROUP HOLDINGS LTD. (Tokyo).

"Packaging bag and packaging multilayer film to be used for producing the packaging bag" was invented by Kenya Majima (Yokohama, Japan), Seishi Yoshikawa (Yokohama, Japan), Koki Shibata (Yokohama, Japan) and Atsushi Ebata (Yokohama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a packaging bag (10) including multilayer films for packaging (5) including a heat-sealable resin layer (3) on a surface and formed by bonding two of the heat-sealable resin layers (3) of the multilayer films for packaging (5), oriented crystals are present in a seal portion (7) formed by...