is a lightweight, rigid, plastic foam insulation material produced from solid particles of polystyrene. Expandsion is achieved by virtue of small amounts of pentane gas dissolved into the polystyrene base material during production. The gas expands under the action of heat, applied as steam, to form perfectly clesed cells of EPS.




How do we classfiy EPS Material?
Regular Grades - High Expansion, Medium Grade, Fast Cycling, Colorful beads
Flame Retardant - High Ratio Flame Retardant, Low Pentane Flame Retardant
specification | Diameter of granularity(mm) | times | |||
E material | P material | B material | F material | ||
103 | 1.2-1.6 | 80-95 | 110-115 | 70-85 | 70-85 |
104 | 0.8-1.2 | 70-85 | 100-115 | 65-80 | 65-80 |
105 | 0.6-0.9 | 65-80 | 100-115 | 60-75 | 60-75 |
106 | 0.4-0.7 | 55-70 | 75-90 | 50-65 | 50-65 |
Name of index Specification | Comment charges | Fire resistant charges |
Content of foaming agent | ≤ 6.8% | ≤ 6.8% |
Residual phenethylene | ≤ 0.6% | ≤ 0.2% |
Water content | ≤ 1.0% | ≤ 1.8% |
Sieving rate of granule | ≥ 90% | ≥ 90% |
Limit oxygen index | / | ≥ 30 |
FLAME RETARDANT | F grades -for panel applications, housing, and constructions. Heat preservation and insulation materials. With high strength, fast forming, high foaming and oxygen index. Oxygen index is above 30. | |||
F-MS(F-103) | 1.2-1.6 mm | Heavy duty block sheet and lightweight molding | 11.8 ~ 12.5 g/l | |
F-SA(F-104) | 0.8-1.2 mm | Middle density applications | 12.5 ~ 15.4 g/l | |
F-SB(F-105) | 0.6-0.9 mm | High density application | 13.3 ~ 16.7 g/l | |
F-S(F-106) | 0.4-0.7 mm | Contour cutting | 15.4 ~ 20.0 g/ |