Expandable Polystyrene (EPS)

Expandable Polystyrene (EPS) is a lightweight, versatile, and high-performance thermoplastic material widely used in insulation, packaging, construction, and industrial applications due to its excellent thermal insulation, shock absorption, and moisture resistance properties. EPS is produced from polystyrene resin beads containing an expanding agent, mainly pentane, which allows the beads to expand when exposed to steam and form a cellular structure with millions of closed air cells. During the manufacturing process, raw EPS beads are first pre-expanded by steam heating, then stabilized, molded, and shaped into different forms according to the required application. The final product provides a combination of low density, high insulation performance, dimensional stability, and cost efficiency, making Expandable Polystyrene one of the most widely used insulation and protective materials in global markets.

Expandable Polystyrene (EPS) products are supplied in different grades, densities, and bead sizes depending on the final application requirements. Standard EPS grades are commonly used for building insulation panels, wall insulation, roof insulation, and flooring systems, while higher-density EPS grades are suitable for heavy-duty packaging, industrial protection, and molded components. Flame-retardant EPS grades are available for applications where improved fire performance is required, especially in construction projects. EPS packaging materials are widely used for protecting electronic equipment, household appliances, food products, pharmaceuticals, and fragile goods during transportation. In addition, EPS blocks and sheets are used in civil engineering projects, decorative elements, lightweight concrete production, and road construction applications due to their low weight and excellent mechanical properties.

Expandable Polystyrene offers many advantages including superior thermal insulation, low water absorption, easy processing, recyclability, lightweight structure, and long service life. EPS products are commercially available in forms such as expandable beads, molded blocks, sheets, boards, and custom-shaped components, which can be supplied in various densities and thicknesses according to customer specifications.

Technical Specification	Typical Value
Product Name	Expandable Polystyrene (EPS)
Chemical Formula	(C8H8)n
Appearance	White expandable beads
Raw Material	Polystyrene resin beads
Expanding Agent	Pentane
Density Range	10 – 40 kg/m³
Thermal Conductivity	0.030 – 0.045 W/m·K
Water Absorption	Low water absorption
Processing Method	Steam expansion and molding
Available Forms	Beads, blocks, sheets, molded parts
Main Applications	Insulation, packaging, construction
Packaging	Bags, bulk bags, customized industrial packing

IF YOU ARE WILLING TO BUY EXPANDABLE POLYSTYRENE FROM VERIFIED IRANIAN SUPPLIERS, PLEASE SCROLL DOWN AND SUBMIT YOUR REQUEST.

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FAQ Expandable Polystyrene (EPS)

Expandable Polystyrene (EPS) is a lightweight cellular plastic material made from expandable polystyrene beads. It offers excellent thermal insulation, shock resistance, low moisture absorption, and easy processing properties for various industrial applications.

EPS is produced by expanding polystyrene beads containing pentane through steam heating. The expanded beads are then stabilized and molded into sheets, blocks, or customized shapes according to customer requirements.

Commercial EPS types include standard EPS grades for general insulation and packaging, high-density EPS grades for heavy-duty applications, flame-retardant EPS grades for construction, and customized molded EPS products for specific industrial uses.

EPS is widely used for building insulation panels, thermal insulation systems, protective packaging, electronic and appliance packaging, food containers, lightweight concrete production, and industrial molded products.

You can find reliable Iranian EPS manufacturers and suppliers through Irancorps, a platform that connects international buyers with evaluated Iranian manufacturers and exporters and helps businesses source suitable products based on technical requirements and commercial needs.

EPS provides an excellent balance of low weight, thermal insulation performance, durability, cost efficiency, moisture resistance, and easy customization, making it a preferred choice for many construction and industrial applications.