KYDEX was originally the masterpiece of Rohm and Haas Company, a Philadelphia-based materials manufacturer working in the aircraft interior business. It was in the late 1960s that people started realizing the possibilities that KYDEX offered. They realized that the sheets could be molded and manipulated into a massive range of shapes, by simply heating and molding around forms. The brand KYDEX has since changed ownership a few times, but the brand itself has still managed to become almost a household name for molded plastics.
Is a simplified version of thermoforming, where a sheet of plastic (Kydex) is heated to a forming temperature, stretched onto a single-surface mold, and forced against the mold by a vacuum. This process can be used to form Kydex into permanent objects such as Holsters.