Thermoforming is the overall process of heating a sheet of material and forming it into its final shape. There are two main types of thermoforming, vacuum forming and pressure forming, and the way in which the forming occurs differs between the two. Vacuum forming, as the name suggests, uses a vacuum to draw the heated material around the mold to create thermoformed packaging, thermoformed trays, or other thermoformed products. Pressure forming, meanwhile, will use air pressure on the top of the sheet to press heated material into the molds in combination with vacuum under the sheet to create much better definition in part features. Jamestown Plastics will use either process or both processes in combinationwhen manufacturing products.