1. Raw Material Pre-treatment and Plasticization：Melt the plastic pellets into a homogeneous fluid
A twin-screw extruder is usually used to heat and plasticize raw materials such as PP/PE at a temperature of 180–220 °C.
2. Mold Forming and Setting：Form a stable hollow structure
The mold determines the thickness and hollow structure of the sheet. Vacuum setting is the core technology, which can precisely control the thickness (tolerance ≤ 0.2 mm) and shape.
3. Cooling and Cutting：Fix the shape and achieve the final dimensions
The water-cooled setting table rapidly cools and sets the sheet. A high-precision cutting system (tolerance ± 0.5 mm) is adopted for cutting.