Polystyrene

Expanded Polystyrene (EPS)

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Grade
WCI EPS Compound
WCI EPS Compound (Grade 2)
WCI EPS F205

WCI EPS (Expandable Polystyrene) grades are lightweight, rigid beads designed to provide a unique combination of thermal insulation, acoustic damping, shock absorption, and recyclability. Produced with controlled bead size and low residual moisture, these grades ensure uniform cell structure, stable processing, and excellent expansion behavior.

WCI EPS Compound is a versatile grade used in packaging, construction, and consumer goods, offering both cushioning and insulation. WCI EPS Compound (Grade 2) provides higher melt flow for applications requiring faster processing, including insulation panels, lightweight concrete, and food packaging. For applications where certified fire safety is critical, WCI EPS F205 delivers flame-retardant performance with NON-HBCD formulation, making it ideal for construction, block molding, and protective packaging.

Together, these grades ensure that WCI EPS meets the needs of industries ranging from packaging and consumer products to construction and technical insulation, while supporting sustainability and cost-efficiency.

Grade	MFI (g/10min)	Density (g/cm³)	Key Features	Typical Applications
WCI EPS Compound	10-14	1.05	Fire-retardant, bead size 4–6 mm, density 12–14 g/L, excellent thermal & acoustic insulation, low moisture (0.2–0.5%)	Packaging for electronics & appliances, insulation boards & blocks, disposable cups, trays, lightweight molded profiles
WCI EPS Compound (Grade 2)	18-23	1.03	Lightweight, rigid beads, high melt flow, superior cushioning & recyclability	Insulation panels, lightweight concrete, protective packaging, food containers, block & shape molding, craft & industrial items
WCI EPS F205	-	13–20 kg/m³	Flame-retardant (B1), NON-HBCD, strong fusion, excellent expansion, REACH compliant	Thermal insulation boards for construction, architectural & contour moldings, high-density block molding, fire-safe protective packaging