Description
Product: T-EPS (Expandable Polystyrene)
General Information: Standard expandable polystyrene EPS is manufactured by the suspension polymerization method. The polymerization is generally carried out in a batch process. Various grades of EPS are supplied in free-flowing beads containing pentane (CFC-free) as a foaming agent. EPS is used for fast-cycle low-density block mold applications with a good surface finish.
Available Grades:
- Types: High Strength (HS), Fast Cycle (FC), Water Proof (WP), Special Extrusion (EX)
- Grade Codes: 121, 221, 321 (HS); 323, 422, 522 (FC); 326, 426, 526 (WP); 600 (EX)
Applications: Grades of each type differ only in bead size, not in composition.
Type & Grade Specifications:
| Type & Grade | Bead Size (mm) | Typical End Product Density (kg/m³) | Typical Applications |
|---|---|---|---|
| TPC – 121 HS | 1.8 – 2.5 | 13 – 25 | Low-density blocks |
| TPC – 221 HS | 1.0 – 1.8 | 14 – 30 | Low – Medium density blocks |
| TPC – 321 HS | 0.7 – 1.0 | 18 – 30 | Shape molding with wall thickness > 10 mm, and medium – high density blocks |
| TPC – 323 FC | 0.7 – 1.0 | 18 – 30 | Faster cycling shape molding with wall thickness >10 mm, & medium-high density blocks |
| TPC – 422 FC | 0.5 – 0.7 | 20 – 35 | Faster cycling shape molding of 6-10 mm wall thickness suitable for high-quality products demanding improved surface finish and high strength |
| TPC – 522 FC | 0.3 – 0.5 | 22 – 50 | Very thin wall shape molding with wall thickness < 5mm suitable for high-quality products demanding improved surface finish and high strength |
| TPC – 600 EX | UP TO 0.3 | —- | Special type for extrusion |
| TPC – 326 WP | 0.7 – 1.0 | 18 – 30 | Low water absorption, longer cycling shape molding with wall thickness >10 mm |
| TPC – 426 WP | 0.5 – 0.7 | 10 – 35 | Very low water absorption, cycling shape molding of 6-10 mm wall thickness |
| TPC – 526 WP | 0.3 – 0.5 | 22 – 50 | Very thin-wall waterproof shape molding products with wall thickness <6 mm such as drinking cups |
Additional Information:
- Lower densities can be achieved by double pre-expansion.