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Expanded Polystyrene (EPS) is a white foam plastic material produced from solid beads of polystyrene. It is a closed cell, rigid foam material produced from Styrene which forms the cellular structure and Pentane which is used as a blowing agent.

EPS Foam is very lightweight and offers very low thermal conductivity, low moisture absorption and excellent cushioning properties.

The key benefits of using EPS Foam:

  • Energy efficiency and saving
  • Thermal resistance and insulation
  • Chemical inertness
  • Cost-effectiveness
  • Excellent impact strength & Dimension stability
  • Recyclable

Expansion Process

EPS Expansion Process Expansion Process There are 3 expansion processes in EPS.
  1. Pre-expansion
  2. Ageing
  3. Forming (Molding)
Expansion Process

Recycling Polystyrene Using a Pelletizing Machine

How to recycle EPS with extrusion pelletizing machine
  1. The waste is broken down into small pieces of EPS foam by a crusher.
  2. The EPS fragments are melted and passed through a plastic extruder.
  3. The melted EPS flows out of the small outlet of the extruder and solidifies into a continuous thin line of solid plastic.
  4. The plastic then passes through a cooling bath and is then cut into small pieces.
  5. This plastic can then be used for the production of plastic products such as picture frames and household pots.
Extrusion Pelletizing Machine