描述
EVAL L171B EVOH Resin is an ultra high barrier ethylene vinyl alcohol copolymer produced by Kuraray. It is designed for multilayer packaging systems requiring extremely low oxygen permeability and excellent aroma retention performance.
Kuraray is the original inventor and leading global supplier of EVOH (EVAL™) resin, first commercialized in 1972. EVAL resins are widely used in food packaging, medical packaging, automotive fuel tanks and industrial barrier applications due to their exceptional gas barrier properties.
EVAL L171B is a low ethylene content grade, which provides very high oxygen barrier performance while maintaining transparency for clear packaging structures. According to technical data, it shows extremely low oxygen transmission rates, making it suitable for high-end barrier packaging applications.
In multilayer structures, EVAL L171B is typically used as a barrier layer sandwiched between polyolefin materials such as PE or PP to protect it from moisture sensitivity and maintain long-term barrier performance.
Shenzhen Ruiqing International Trade Co., Ltd. supplies original Kuraray EVAL EVOH resins with stable supply, technical support and global delivery service.
EVAL L171B EVOH Resin Key Features
- Ultra-high oxygen barrier performance
- Excellent aroma and flavor retention
- Low gas permeability
- High transparency for packaging visibility
- Excellent chemical resistance
- Suitable for multilayer co-extrusion
- Strong barrier against oxygen and solvents
- Widely used in high-end packaging
EVAL L171B EVOH Resin Typical Applications
- High barrier food packaging films
- Multilayer bottles
- Sheet extrusion packaging
- Medical packaging systems
- Automotive fuel tanks
- Industrial barrier films
- Vacuum insulation panels
- Chemical packaging containers
Advantages
EVAL L171B provides one of the highest oxygen barrier performances among polymer materials. It significantly extends shelf life of packaged food and protects sensitive contents from oxidation and odor loss.
Compared with conventional plastics, EVOH materials like EVAL offer superior gas barrier properties but require multilayer structures due to moisture sensitivity.
Related Products
Typical Properties
| Property | Value |
|---|---|
| Material | EVOH |
| Grade | L171B |
| Ethylene Content | Low (~27 mol%) |
| Density | 1.21 g/cm³ |
| Melt Flow Rate | 4.0 g/10 min |
| Melting Temperature | 190°C |
| Glass Transition Temp | 63°C |
| Oxygen Transmission Rate | ~0.1 cc·20µm/m²·day·atm |
| Processing | Multilayer co-extrusion |
Processing Recommendations
EVAL L171B EVOH Resin is typically processed via multilayer co-extrusion, sheet extrusion and bottle forming. Because EVOH is sensitive to moisture, it must be protected by outer polyolefin layers such as PE or PP in final applications.
Drying before processing is recommended to ensure stable extrusion and optimal barrier performance.
For official product information, please refer to the Kuraray EVAL Official Product Page .
For technical data sheet, please refer to the EVAL L171B Technical Data Sheet (TDS) .
EVAL L171B EVOH Resin FAQ
What is Kuraray EVAL L171B EVOH Resin?
It is an ultra-high barrier ethylene vinyl alcohol copolymer designed for multilayer packaging applications.
What makes EVAL L171B special?
It has extremely low oxygen permeability and excellent aroma retention performance.
Where is it used?
Food packaging, bottles, medical packaging, automotive fuel tanks and industrial barrier films.
Why is EVOH used in multilayer structures?
Because it provides excellent gas barrier but requires protection from moisture using PE or PP layers.
Can original Kuraray material be supplied?
Yes. Shenzhen Ruiqing International Trade Co., Ltd. supplies original Kuraray EVAL EVOH resins with full support.
