Thermoforming is the thermoplastic sheet or tubular material heated to soften, under gas pressure, liquid pressure or mechanical pressure, using the appropriate mold or fixture to make it into a product. Thermoforming is a forming method in the high elastic state range of plastics.

Thermoforming has the following four characteristics.

① Strong adaptability. Large, small, thick or thin products can be formed by thermoforming.

② Wide range of applications. Such as the packaging of utensils, food and medicine in daily life, automobile parts, radome aircraft cabin capacity, etc.

Less investment in equipment. The pressure required for thermoforming is not high, and the pressure control requirements for the equipment are not high.

④ Convenient mold manufacturing. Due to the low molding pressure, mold materials in addition to metal, wood, plastic, gypsum, etc., can be used as mold materials.

Most semi-finished products of thermoplastics (such as films, sheets, plates or pipes) can be used as raw materials for thermoforming, such as PS, PMMA, PVC, ABS, PE, PP, PA, PC and PET semi-finished products.