Characteristics of EPS

EPS is a Highly Resource-efficient Material by Virtue of the Air Inside

The 98% Air inside EPS Products Makes it Excellent Properties

EPS products are comprised of 98% air, so they have excellent insulation and shock-absorbent properties. Furthermore, it is used in various industries because it has great lightness, processability, and durability. Also, due to it being a single material, it is easy to recycle.

Excellent Characteristics of EPS


As it contains a lot of air, EPS shows excellent heat and cold insulation performance.
Cold things stay cold and warm things stay warm. EPS is a collection of expanded beads that consist of tiny independent air bubbles. Since there is less air circulation in each air bubble, it is difficult for heat transfer to happen.

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EPS made it possible to preserve the freshness of fish, while it was difficult to do so with wooden boxes prior.

2Shock Absorbency / Cushioning properties

The EPS independent air bubbles have excellent shock absorption. This protects the products as a cushioning material for packaging things like home appliances and delicate equipment.


Extremely lightweight because the product consists of 98% air and 2% polystyrene.

4Resource Saving

EPS is made with only 2% of petroleum-derived material and 98% of air, so it is extremely resource-saving.


EPS can retain its shape semi-permanently if it is not exposed to direct sunlight (Ultraviolet rays). For weight load durability, it can tolerate up to 5 tons per 1 square meter on its surface when loaded evenly. (expanded EPS pressure allowance in the case of 20 Kg/M3)


Since EPS is derived from a single material, it has excellent recycling abilities that can easily be reused as a renewable resource (ingot, and pelletized) by just applying heat.


It can be easily shaped by cutting it with a knife or using a heating wire.

[Usage example]
Taking advantage of the characteristics of it being ③ lightweight and ⑤ durable

With the EPS embankment construction method (GEO FOAM), it can be used instead of soil (EPS blocks 50cm thick, 1m x 2m in size) in some construction projects. It has excellent durability even after 40 years of use.

EPS Development Organization
Ex) Ratio of weight for same cubic volume (1㎥) soil = 1.3 – 1.8 ton / concrete and asphalt = 2.3 ton / EPS = 0.02 ton