The Mega factory of MAINPOL S.L. is designed specifically for companies with a high EPS, in order to be able to produce their own expanded polystyrene without the need for previous experience with a very high production performance, and with the lowest possible energy and personnel cost, so that the investment is recovered as soon as possible.


The EPS manufacturing process does not emit polluting gases into the atmosphere



The Pre-expander transforms the expandable EPS (raw material) into expanded EPS, achieving the necessary density depending on the production needs. It is an easy-to-use machine and a fully automated process.


The Blocker transforms the EPS beads already expanded into a compact block for measuring the inner mold, for subsequent cutting into various shapes, being fully automatic.


The cutter transforms the EPS block into plates of different sizes depending on the needs. And the Pantograph cuts the block into pieces with different shapes (vaults, caissons, cornices, etc.).


The steam boiler produces the water vapor necessary for the different phases of the expansion process (expansion of the raw material beads, welding and pressing of the block) It is fully automatic and requires minimal maintenance.


Grinding mill, designed to recycle EPS quickly and efficiently, grinds EPS into small portions for reuse, incorporating it back into the production process, or allocating it for other applications.


The silos are used for the storage and rest of the expanded beads, while their stabilization occurs. The dimensions of the silos are very varied and adaptable to customer needs.


The compressor produces the air necessary for the movement of valves, flaps, etc. The tank is a storage of the air produced by the compressor.


  • Necessary covered area: 550 m2. If the silos are exterior 350m2.
  • Block volume: 4.25 m3 approx.
  • Production 8 h / day: 5000-7000 m3 per month.
  • Necessary personnel: 3 or 4 operators.
  • Production densities: 15-25 g / l first expansion and 9-15 g / l second expansion.
  • Steam consumption: 1500-1800 kg/h.
  • Fuel consumption: 130 l/h.
  • Electricity consumption: 22 KWh.

*Approximate data, may vary depending on density, etc.


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