Thermoforming

Thermoforming is a set of processes for forming a thermoplastic sheet or film around the mold by applying heat and pressure. In this process, the sheet is heated in the oven until softened but not to the melting point. Sheet is then removed from the oven, spread out around the mold and then the sheet is sucked by the vacuum process. Because the mold at room temperature, then the formation of the plastic mold will be in accordance with smoked During sheet in contact with mould. That the types of products generated with this process are Billboards, packaging, household applications. Product-open or hollow products can not be formed Because the pressure can not be maintained During the formation. Since thermoforming is the process of withdrawal and toning, as well as sheet metal forming, the material must have a high uniformity of strain, if not Will there be a failure. -Mould for thermoforming molds are usually made ​​from aluminum Because of the high fracture strength is not required. Tooling is not too expensive and quality considerations, including wear, unequal thickness is not too significant. (bid / multiple sources)