🧩 E/TPE – Ethylene-based Thermoplastic Elastomer
(A thermoplastic elastomer derived from polyethylene and ethylene rubber, designed to combine rubber-like elasticity with the processability of PE. It is highly flexible, cold-resistant, and chemically stable.)
🔹 What is E/TPE
E/TPE belongs to the TPE-O (olefinic) family. At ReplastMD, we treat it as the “flexible cousin of polyethylene.” Containing elastic ethylene segments, it maintains softness and elasticity at cold temperatures while retaining the chemical resistance and thermal stability of polyolefins. It is optimized for excellent adhesion to PE and PP, making it the ideal candidate for co-extruded applications and integrated flexible zones in modern vehicles.
🔧 Composition & Properties
- Polymer Base: Ethylene/α-olefin copolymer (~70%).
- Rigid Matrix: Polyethylene (PE) (~30%).
- Density: ~ 0.88 – 0.94 g/cm³.
- Processing Temp: 220 – 250 °C.
- Visuals: Soft, smooth, slightly elastic; translucent, light grey, or matte black.
🚗 Where it is used in the automotive industry
| Component | Example parts | Observations |
| Gaskets / Seals | VW, Toyota, Renault | Elasticity and water/oil resistance |
| Soft Body Guards | BMW, Hyundai | Shock absorption and controlled deformation |
| Flexible Grips / Shields | Ford, Dacia | Soft, slightly rubbery texture |
| Co-extruded Layers | Mercedes, Peugeot | Perfect compatibility with PP/PE substrates |
🔧 Welding and Bonding Methods
| Method | Optimal Temp | Observations |
| Hot Air | 220 – 250 °C | Clean weld without excessive melting |
| Heat Plate (Mirror) | ✅ Recommended | Homogeneous bonding, excellent strength |
| Chemical Bonding | ⚠️ Restricted | Requires PE primer (Loctite® 770 + 406) |
💡 ReplastMD Recommendation: Weld at ~240 °C with controlled hot air. E/TPE is excellent for flexible parts, gaskets, and co-extruded components, offering elasticity, cold resistance, and perfect compatibility with PE/PP.