Pre Expanded Polystyrene Beads Making Machinery An ordinary intermittent pre-expansion machine is a device used in the manufacturing process of expanded polystyrene (EPS) foam. EPS foam is a lightweight and versatile material commonly used in packaging, insulation, and construction. The pre-expansion machine is responsible for the initial expansion of polystyrene beads, which are the raw material used to create EPS foam. The machine consists of a hopper where the beads are loaded, a heating chamber, and an expansion chamber.The process begins by loading the polystyrene beads into the hopper. The beads are then heated in the heating chamber, usually using steam or hot air, causing them to soften and expand. The expanded beads are then transferred to the expansion chamber, where they are further heated and expanded through the release of pressure.Once the beads have reached the desired size and density, they are cooled and collected for further processing. This can include molding into…