an The central compound of Silver's adhesive acrylate copolymer. But th was an co adhesive was too weak and wouldn't stick for long. Acrylate were category of chemical compounds often used in paints. plastics and Fry wanted was the perfect pressure-sensitive adhesive. He What experimented with particles called microspheres. tiny round molecules. When sprayed onto a surface, the adhesive coating was just like the pebbled surface of a basketball By spraying the adhesive in the form of these round microspheres, he could coat a surface that