ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,506, issued on Dec. 16, was assigned to TOYOBO Co. LTD. (Osaka, Japan).
"Heat-shrinkable polyester-based film roll" was invented by Masafumi Inoue (Tsuruga, Japan) and Masayuki Haruta (Tsuruga, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention aims to provide a heat-shrinkable polyester film roll having decreased generation of wrinkles or longitudinal shrink mark. The present invention provides a film roll of a heat shrinkable polyester film, wherein a polyester of the polyester film contains recycled raw material from a PET bottle and an acid component of the polyester comprises isophthalic acid, and the film roll satisfies...