PSP foam sheet unit is the most commonly used by international Okada dual stage series high foam technology, from a screw, secondary screw, butane pump, extrusion die, setting device, tractor, rolling institutions into. The equipment to General Purpose Polystyrene as raw materials in high-pressure injection foam extrusion process, the die after extrusion, foaming, cooling, shaping, after traction, rolling into a finished sheet, the sheet by vacuum after molding, can be made of containers