The laminating process is to cut the preprepreg, superimpose it according to the design requirements of the lamination, then heat it to a certain temperature through the heat conducting oil electric heater, then apply a certain pressure in the press, and hold the pressure at a certain temperature for a suitable time, and finally cool it down and demould to make composite materials. Laminates. This technology is an early and mature forming method in the process of composite material forming. It is suitable for the production of thermosetting and thermoplastic sheets with large planar size and thickness, as well as corrugated sheets, copper clad sheets or composite products with simple structural shape.