ETPU Styrofoam Machine

Hangzhou Epsole Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of etpu styrofoam machine in China. We warmly welcome you to buy high quality etpu styrofoam machine for sale here from our factory. Good service and reasonable price are available.

Working principle:
Supercritical fluid foaming method: Under certain temperature and pressure conditions, supercritical fluid (such as carbon dioxide or nitrogen) is injected into thermoplastic polyurethane particles to expand the particles to form foamed beads. When the pressure suddenly drops, the supercritical fluid quickly escapes from the polymer, producing a large number of microporous structures, so that the material has good elasticity and cushioning properties.
Steam heating method: First, the thermoplastic polyurethane particles are preheated under a certain pressure, and then steam is introduced for heating to expand the particles and bond with each other to form ETPU foam materials. The heat of the steam melts the surface of the particles, thereby achieving bonding between the particles, and after cooling, ETPU foam products can be obtained.
Main structure:
Raw material supply system: responsible for conveying thermoplastic polyurethane particles to the foaming equipment, usually including hoppers, conveying pipelines and metering devices, etc., to ensure the accurate supply of raw materials.
Foaming reactor: It is the core component of ETPU foaming, where supercritical fluid injection or steam heating and other foaming processes are carried out. The reactor needs to have good sealing and pressure resistance to ensure the safety and stability of the foaming process.
Temperature control system: Accurately controlling the temperature during the foaming process is crucial to ensuring the quality of ETPU foam. The temperature control system usually includes a heating device (such as an electric heater, a steam heater, etc.) and a temperature sensor, which can monitor and adjust the temperature in the reactor in real time.
Pressure control system: During the supercritical fluid foaming process, the pressure needs to be accurately controlled to ensure that the supercritical fluid can fully penetrate into the thermoplastic polyurethane particles and foam at a suitable pressure. The pressure control system includes pressure sensors, pressure reducing valves, booster pumps and other equipment, which can achieve precise pressure regulation.
Molding mold: According to different product requirements, molding molds of different shapes and sizes are designed. ETPU foam beads are molded in the mold, and the final ETPU foam products can be obtained after cooling.
Features and advantages:
Excellent performance: ETPU foam materials have excellent elasticity, resilience, shock absorption and wear resistance, etc., and can be widely used in sports shoe soles, sports equipment, car seats, packaging materials and other fields.
Efficient production: ETPU foam bead molding machine can achieve continuous production, improve production efficiency and reduce production costs.
Environmental protection and energy saving: Using supercritical fluid as a foaming agent, compared with traditional chemical foaming agents, it has the advantages of environmental protection, non-toxicity, and odorlessness, and the use of supercritical fluid is small, which can reduce energy consumption.
Stable product quality: Through precise temperature and pressure control, as well as advanced molding technology, the quality of ETPU foam products can be guaranteed to be stable, with high dimensional accuracy and good consistency.

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