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 General
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EPS (Expandable Polystyrene) is a white polystyrene bead with a blowing agent. and the expanded polystyrene foam is used for isolation board and packing material for shock-absorbing
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| LG EPS
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| LG Chem. produces mainly two types of EPS resin as general and flame retardant in the same process. The flame retardant type and normal type are distinguished by the recipes.
The EPS plant has attained international recognition for own product's qualities with the acquisition of ISO 9001 certification.
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| EPS Composition |
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EPS General |
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- Poly Styrene
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92 ~ 94%
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- Appearance
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White Solid Beads
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- Blowing Agent
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5.5 ` 7%
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- Specific Gravity
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1.04 Approximately
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- Residual Ethyl Benzene
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Max. 500 ppm
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- Appearance Gravity
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0.60 Approximately
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- Coating Agent
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2000 ~ 4000 ppm
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- Moisture Content
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Max. 0.7%
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LG EPS Grade and Applications
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 General Purpose |
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B120
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Large part packages, floats etc.
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B160
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Medium and large part packages, floats
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B240
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Medium and large part packages
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B320
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Small part package
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| Flame Retardant |
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R120
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Insulating board, large part package, floats
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R160
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Insulating board, medium and large part package
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R240
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Insulating board, small and medium part package
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R320
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Insulating board, small part package
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| Property of Expanded Product |
General Purpose |
Frame Retardant |
| Grade |
B120 |
B160 |
B240 |
B320 |
R120 |
R160 |
R240 |
R320 |
| Particle Size (Ø, mm) |
0.96-1.74 |
0.68-1.30 |
0.59-1.00 |
0.35-0.71 |
0.96-1.74 |
0.68-1.30 |
0.59-1.00 |
0.35-0.71 |
| Recommendable Density |
g/L |
15.0-20.0 |
15.0-20.0 |
15.0-25.0 |
17.0-30.0 |
13.0-17.0 |
14.0-20.0 |
15.0-25.0 |
17.0-30.0 |
| lbs/ft3 |
0.93-1.25 |
0.93-1.25 |
0.93-1.55 |
1.05-1.86 |
0.81-1.05 |
0.87-1.05 |
0.93-1.55 |
1.05-1.86 |
| Application |
Insulation Board |
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| Large Part Packing |
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| Medium Part Packing |
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| Small Part Size |
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| Cup |
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| Fruit Box |
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| Fish Box |
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| Floats |
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| Pad |
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| Civil Engineering |
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Recommended Use |
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Possible Use in Particular Case |
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| Physical Properties of Molded Products
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Properties |
Test Method |
Unit |
Density of the End Product (g/L) |
| DIN |
12 |
15 |
20 |
30 |
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Max. thermal conductivity |
56-612 |
mW/m.k |
41 |
39 |
36 |
34 |
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Max. [permeability to stema |
53-429 |
µg/m2.sec |
400 |
300 |
200 |
100 |
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Min. resistance to pressure (relative Cruihing 10%) |
53-421 |
kPa |
60 |
80 |
120 |
190 |
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Min. flexual stress at break |
53-423 |
kPa |
140 |
200 |
280 |
400 |
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Max. temperatures for less than 5% warping |
53-424 |
°C |
80 |
80 |
85 |
85 |
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Korean
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