Production process: pre-foaming → curing → molding
Pre-expansion: Use 80-100℃ steam to heat the raw materials to increase the beads by 40-50 times.
Maturation: The pre-expanded beads are dried in the silo to equalize the internal pressure. The beads will have greater mechanical elasticity.
Molding: The pre-expanded and dried beads are transferred to the mold, and steam is added again to make the beads stick together to form a finished product.
Features: low thermal conductivity, low density, high mechanical properties, low water absorption, easy operation and installation, aging resistance, sound insulation, and buoyancy.
Fire. The flame retardancy of EPS is usually improved by adding flame retardant.
Recycling. Physical recovery method: The recovered and compacted volume becomes one 40th of the original, which is convenient for transportation and used for re-production. The dissolution method is costly. Used for incineration for energy recovery. EPS is not easily degraded and can be used for landfill.