EPS

Expanded Polystyrene or trademarked name, STYROFOAM, is an extremely lightweight product that is made of expanded polystyrene beads which is produced though polymerization of styrene monomer. EPS is one type of this polymer characterized by its increase in volume when exposed to heat. The expandability is caused by uniform distribution of hydrocarbon agent, like Pentane, within EPS structure. It used for construction, insulation, packing, etc.

GradeBead size (mm)density (kgf/cm2)Blowing agent – pentane
F 1001.2 – 1.67 – 12 (kgf/cm2)>5.8%
F 3000.7 – 118 – 25 kg/м3>5.3%
F 4000.4 – 0.7Above 20 kg/м3>5.3%
R 3000.7 – 113 – 25kg/м3>5.5%
R 4000.4 – 0.7Above 18 kg /м3>5.3%
Polystyrene Content93 ~ 94 %
Pentane Content5 ~ 7 %
Flame Retardant1 % Max
MV (*1000)250 Aprx
Specific Gravity1.03 ~ 1.05
Moisture Content1 % Max.
Foam Water Absorption100 gr/m²Max.
Foam Compressive Strength0.5 kgf/cm² Min.

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