🧩 P/E-I-T20 – PE+PP Copolymer + 20% Talc
(Rigid-semi-elastic copolymeric olefin material, composed of Polyethylene (PE) and Polypropylene (PP) in an isotactic structure (I), with 20% talc (T20) as a stabilizing mineral filler)
🔹 What is P/E-I-T20
P/E-I-T20 is a PE and PP copolymer modified with fine talc, offering a combination of polypropylene’s rigidity and polyethylene’s elasticity.
This material is frequently encountered in the European automotive industry (Renault, PSA, Fiat, Dacia), used for liners, shields, and housings that require durability, impact resistance, and uniform thermal behavior. Similar markings include T15, T25, TD20, or TX20 variants.
🔧 Composition
| Component | Typical Proportion | Role |
| PE (Polyethylene) | 40–45 % | Flexibility and impact resistance |
| PP (Polypropylene) | 35–40 % | Structural stability and rigidity |
| Talc (T20) | 20 % | Stiffening and shrinkage reduction |
| Additives | < 5 % | UV protection, longevity, and color |
🚗 Automotive Applications
| Component | Example parts | Observations |
| Wheel Arch Liners | Renault, Dacia, Fiat | Semi-flexible, vibration-resistant |
| Underbody Shields | Engine/transmission panels | Thermally stable and lightweight |
| Protective Covers | Exterior technical panels | Good shock resistance |
| Technical Elements | Sensor caps, sill protectors | Rigid and light, no visible gloss |
🔩 Welding Compatibility
| Mating Material | Compatibility | Observations |
| P/E-I, PP-TD, PP-TPO, TEO | ✅ Excellent | Common structure |
| PP-EPDM, TPO-TD20, P/E-I-TD20 | ⚠️ Fair | Requires PP-TPO welding rod |
| TPE-O, TPE-V | ⚠️ Limited | Weldable only with soft TPO rod |
| PA, PC, PVC, ABS, PET | ❌ Incompatible | Chemically and thermally incompatible |
🏭 Manufacturers and Trade Names
- Borealis AG: Daplen® P/E-T20
- SABIC: PP/PE Copolymer T20
- LyondellBasell: Hostacom® P/E-T20
- Röchling Automotive: RoeBlend® P/E-I-T20
🧠 How to Identify
- Markings: >P/E-I-T20<, >PE-PP-T20<, >P/E-TD20<
- Texture: Matte, dense, rigid, slightly softer than PP-TD20
- Density: ~1.00–1.03 g/cm³
- Flame Test: Clean flame, faint olefin smell, white-grey ash (talc)
- Slightly elastic, but resistant to permanent deformation
🛠️ P/E-I-T20 Welding at ReplastMD
| Method | Temperature | Observations |
| Hot Air | 230 – 250 °C | Recommended – TPO / PP-TPO rod |
| Heat plate (Mirror) | 220 – 240 °C | Stable bond, no warping |
| Extrusion | 230 – 250 °C | Ideal for thick joints |
💡 ReplastMD Recommendation: use TPO or PP-TPO welding rods, maintain constant air flow, apply low pressure, and allow for slow cooling.