TPE German Melos 3131
Melos 3131 (Germany) TPE
Melos 3131 is a TPE grade featuring high strength and high resilience, together with excellent weather resistance, fatigue resistance, over‑molding adhesion and eco‑friendly safety performance.
Main Applications
Automotive industry: Sealing strips and other components. Consumer goods: Toys, kitchen articles such as cutting boards and cutlery handles. Electronic accessories: Soft shock‑absorbing parts for keyboards and mice. Sports equipment: Golf grips, yoga mats, etc. Daily‑use tools: Over‑molded handles for various hand tools.
Property Specifications
| Test Item | Value / Unit | Test Standard |
|---|---|---|
| Density | 0.96 g/cm³ | ISO 1183 |
| Tensile stress at break | ＞5 MPa | ISO 37 |
| Elongation at break | ＞400 % | ISO 37 |
| Tear strength | ＞7.0 kN/m | ISO 34‑1 |
| Hardness | 65 Shore A | ISO 868 |
| Compression set | ＜40 % | ISO 815 |
Processing Guidelines
| Processing Parameter | Recommended Setting |
|---|---|
| Barrel & nozzle temperature | Barrel:160‑210 ℃；Nozzle:180‑230 ℃ Upper‑parabolic profile: Feed zone 150‑170 ℃, middle zone 170‑180 ℃, front zone 190‑200 ℃, nozzle 180 ℃ |
| Mold temperature | 30‑40 ℃. For SEBS‑based grades: 35‑65 ℃ for better flow & surface finish |
| Injection speed | Multi‑stage injection: fast fill for runner, reduce speed after gate, slow fill for last 10 % cavity. Medium speed for SBS system; higher speed for SEBS system |
| Injection pressure | Sufficient to fill cavity within 1‑5 seconds |
| Holding pressure | Keep as low as possible, approx. 50 % of injection pressure. Set hold time until part weight stabilizes and shrink marks are acceptable. |
| Screw speed | 50‑150 rpm |
| Back pressure | 50‑150 psi (≈3.4‑10.3 bar) |
| Pre‑drying | Generally not required. For high‑surface‑quality parts or over‑molding onto ABS / PC: dry at 50‑80 ℃ for 2‑4 h |
All data above are for reference only.
