The characteristic of thermoforming is that the forming pressure is low, and the thermoforming process is as follows: Plate (sheet) material-clamping-heating-applying pressure-cooling-shaping-semi-finished product-cooling-finishing-finished product Thermoforming is different from one-time processing processes such as injection molding and extrusion. It is not used for plastic resin or pellets for heating molding or continuous molding with the same cross-section through a die; nor is it using machine tools, knives and other mechanical processing methods to cut part of the plastic material. , To obtain the required shape and size, but for the plastic board (sheet) material, heating, using mold, vacuum or pressure to deform the board (sheet) material to achieve the required shape and size, supplemented by supporting procedures to achieve the application purpose . Thermoforming is particularly suitable for the manufacture of products with thin walls and large surface areas. Commonly used plastic varieties include polystyrene, plexiglass, polyvinyl chloride, ABS, polyethylene, polypropylene, polyamide, polycarbonate and polyethylene phthalate.
