Electrical tape
Experiments were carried out combining new plasticizers with the vinyl resin, which was white and floury in consistency. Finally in January 1946, the 3M team of inventors Snell, Oace, and Eastwood applied for a patent for a vinyl electrical insulating tape with a plasticizer and a non-sulfur-based rubbery adhesive. The first commercialized version of the tape was sold for wrapping wires.