Hollow plastic plate with raw materials at once molding plastic products by feeding hopper into the barrel of the injection molding machine, turn the screw to promote the advance of raw materials, at the same time the the raw receiver tube external heating. Since the raw material in the barrel is necessary to heat up, but also because of the screw thread volume gradually reduced by compression, plus kept turning the screw thread the flip advance materials and materials and barrel friction between the other conditions the role of the raw material is plasticized be pushed forward while gradually molten state. Packing, cooling stereotypes after the preset time is reached, i.e. the product solid molding completed. Injection Block cylinder piston pulling back, the screw is started the second pre-plasticizing, forming the mold is opened, the products are top of the mold cavity, hollow plastic plate injection whole process.