🧩 PP+EVA – Polypropylene with Ethylene-Vinyl-Acetate (EVA)
(Weldable flexible and soft plastic, used in damping automotive parts and decorative elements)
🔹 What is PP+EVA
PP+EVA is a blend of polypropylene (PP) with ethylene-vinyl-acetate copolymer (EVA), designed to improve elasticity, transparency, and impact resistance.
EVA acts as an elastomer, giving the plastic a soft, rubbery texture and superior resistance to cold and repeated bending. It is frequently used in decorative parts, protectors, covers, gaskets, and interior automotive accessories where a material that is pleasant to the touch but also mechanically resistant is desired.
🔧 Composition
- PP (Polypropylene) – rigid, thermally stable base
- EVA (Ethylene-Vinyl-Acetate) – flexible elastomer 10–30 %
- Additives – UV stabilizers, antioxidants, compatibilizers, colorants
- Variants: PP+EVA10, PP+EVA20, PP+EVA30, depending on the elasticity level
🚗 Where PP+EVA is used in the automotive industry
| Component | Example parts | Observations |
| Interior | Covers, handles, gaskets | Soft texture, pleasant to the touch |
| Exterior | Protectors, mirror covers, trunk trim | Good resistance to cold and impact |
| Engine Compartment | Secondary flexible parts | Vibration stable, but not structural |
| Aftermarket | Universal gaskets, tuning accessories | Elastic, easy to cut and weld |
🔧 Welding temperatures and methods
| Method | Optimal temperature | Observations |
| Hot air | 250 – 270 °C | Controlled weld, no bubbles |
| Heat plate (mirror) | 240 – 260 °C | Soft and clean joint |
| Manual extrusion | 230 – 250 °C | Ideal for thin parts |
| Ultrasonic | — | Possible for fine, decorative parts |
🔩 What to weld PP+EVA with (Material compatibility)
The question “what to weld PP+EVA with” is important because EVA lowers the melting point of the PP. The material welds perfectly with identical PP-EVA or with other flexible polyolefins (PP+EPDM, PP+TPO, PP+TPV).
✅ Compatible:
- PP+EVA ↔ PP+EVA – ideal combination
- PP+EVA ↔ PP+EPDM / PP+TPV / PP+TPO – very good compatibility
- PP+EVA ↔ PP-C / PP-H / PE-LD – moderate compatibility
❌ Incompatible:
- ABS, ASA, PC, PA, PVC – different melting points and chemical structures
💡 ReplastMD Recommendation:
Use PP-EVA or PP-EPDM welding rods at a temperature of 260 °C. Clean the area before welding, melt slowly to avoid bubbles caused by the vinyl-acetate, and ensure constant pressure during joining.
🏭 Manufacturers and trade names
| Manufacturer | Brand / Series | Country / Region |
| LyondellBasell | Hostacom® EVA | Germany / Netherlands |
| Borealis | Daplen® EVA | Austria |
| SABIC | PP-EVA Compound | Netherlands / Global |
| TotalEnergies | Lumicene® EVA | France |
| Hyundai EP | Polytron® EVA | South Korea |
| Ravago | Enyglos® EVA | EU |
🧠 How to identify PP+EVA
- Engraved marking: >PP-EVA< or >PP/VA<
- Soft surface, slightly glossy, rubbery appearance
- Yellow-blue flame, sweetish-plastic smell
- Melts easily at 260 °C, no smoke
- Floats completely in water (density < 1 g/cm³)
🛠️ PP+EVA Welding at ReplastMD:
At our service center in Chisinau (Ciocana sector), ReplastMD performs professional PP-EVA welding for:
- covers, gaskets, flexible panels, and decorative parts
- restoration of broken corners, fixings, and deformed edges
- reinforcements using our own PP-EVA rods