ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,404,433, issued on Sept. 2, was assigned to Avery Dennison Corp. (Mentor, Ohio).
"Non-swelling hot melt adhesive" was invented by Anna Cherian (Wassenaar, Netherlands) and Jarkko T. Pitko (Wassenaar, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided herein is a hot melt pressure sensitive adhesive comprising one or more styrene block copolymers, a tackifier, and polyisobutylene plasticizer, wherein the adhesive contains less than 1 wt % of a plasticizer oil. The adhesive can be used in a label construction along with a facestock such as a polyethylene facestock, wherein the swelling factor of the facestock is reduced as compared to the...