🧩 PBS+EnPol – Bio-Polybutylene Succinate (EnPol®)

(Biodegradable aliphatic bioplastic material obtained through the polycondensation of bio-succinic acid. The EnPol® series by SK Chemicals is recognized for its durability, flexibility, and thermal stability, used in lightweight auto parts and eco-gaskets.)

🔹 What is PBS+EnPol

PBS (EnPol®) belongs to the family of biodegradable polyesters. At ReplastMD, we treat it as a high-performance sustainable alternative to PP and ABS. It features a glossy, smooth texture and is easily processed via injection molding. It is partially compatible with bio-TPEs and PHA, making it a versatile choice for modern “green” automotive interiors and non-structural components.

🔧 Composition & Properties

• Polymer Base: Polybutylene Succinate (PBS).
• Density: 1.22 – 1.26 g/cm³.
• Melting Point: 113 – 120 °C.
• Operating Range: –20 °C to +90 °C.
• Chemical Resistance: Good (oils, water, detergents).
• Biological Degradation: Full decomposition in 6–12 months.

🚗 Where PBS+EnPol is used in the automotive industry

Component	Example parts	Observations
Bio Caps & Covers	Interior, trunk trim	Resistant, glossy, flexible
Finishing Elements	Sensor covers, plates, handles	Ecological alternative to PP
Thin Films / Layers	Interior protectors	Good elasticity and clarity
Bio Injection Parts	Non-structural components	Compatible with bio-PP and PHA

🔧 Welding Temperature and Methods

Method	Optimal Temp	Observations
Hot Air	⚠️ 120 – 130 °C	Possible, but high risk of uneven melting
Heat Plate (Mirror)	⚠️ 120 – 125 °C	Slow bonding, requires very light pressure
Manual Extrusion	❌ Not recommended	Rapid thermal degradation occurs
Chemical Bonding	✅ Recommended	Bio-epoxy or polyester adhesives

💡 ReplastMD Recommendation: PBS+EnPol is not suitable for traditional hot-air welding; the material melts too quickly and discolors above 130 °C. ReplastMD recommends bio-compatible chemical bonding or discreet mechanical fastening for all aesthetic repairs.