Manufacturing process for EPS, HIPS and CO-POLYMERS

1.0 PRE-EXPANSION PROCESS (FOR EPS AND HIPS ONLY)


The raw material (in solid spherical bead form) is expanded in the pre-expansion chamber to the specified expansion times or density. Steam is used for the expansion process. MPC uses 2 batch-type pre-expanders for this process.



2.0 EXPANDED MATERIAL AGING PROCESS (FOR EPS AND HIPS ONLY)


Since there is partial vacuum inside the beads, these are easily deformed. An aging process is required where-in the beads are placed in air-permeable silos to allow air in entering the internal portion of the beads until pressure equilibrium is achieved between outside pressure and internal bead pressure.


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 Production Area
 Machine Shop
 Wirecut Area
 Packing Area/Drying Room
 Die-cut Process
 Manufacturing Processes

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