Thermoforming is a manufacturing process where a plastic sheet is heated to a pliable forming temperature, formed to a specific shape in a mold, and tripped to create a usable product. HENAN OKAY Plastic 12" x 12" Thermoforming Packs Kydex Plastic 12" x 12" Thermoforming Packs Plastic 12" x 12" Thermoforming Packs Polycarbonate Plastic