US Patent Issued to KURARAY on July 28 for "Water-soluble film and package" (Japanese Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,353, issued on July 28, was assigned to KURARAY Co. LTD. (Okayama, Japan).

"Water-soluble film and package" was invented by Minoru Okamoto (Okayama, Japan), Sayaka Shimizu (Okayama, Japan) and Osamu Kazeto (Okayama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "[Problem to be solved] To provide a water-soluble film having good transparency and good releasability from a support with less surfactant content.[Solution] A water-soluble film containing a polyvinyl alcohol resin and surfactant, wherein a content of the surfactant is 0.005 to 1 parts by mass with respect to 100 parts by mass of the polyvinyl alcohol resin, and a ratio S(0)/S(32) of ...