What is the basic process of plastic thermoforming?

The basic process of thermoforming is: sheet clamping → heating → forming → cooling → demolding. Among them, molding is the most important and complicated. Most of the thermoforming is carried out on a molding machine, which varies greatly with the thermoforming method. Various molding machines do not all have to complete the above five processes, according to the actual production needs can be traded off. Usually, the maximum size of the clamping device and the maximum forming depth are the main parameters of the thermoforming machine.



　　①Clamping of material. Material clamping is a measure to prevent thermal shrinkage and self weight sagging when using plastic sheets (sheets) cut to a certain size for thermoforming, clamping around the sheet (sheets) to maintain the shape of the mold release.
　　②Heating. The heating system heats the plate (sheet) to the required temperature for molding at regular time and temperature, so that the material becomes highly elastic and ensures the smooth operation of the next molding process.
　　③Forming. The process of forming the heated and softened sheet into the required shape through the mold and related devices.
　　④Cooling system. The plastic products with a certain temperature of basic molding are cooled to below the heat deformation temperature, so that the products are cooled and cured, and the size is fixed and the products are not deformed after being released from the mold by the demolding device.