SVW™ EW-3201S-EVOH High-Barrier Material for Industrial Applications
Performance Features of SVW™ EW-3201S in Industrial Applications
1.Exceptional Barrier Performance for System Protection
In automotive fuel tanks,SVW™ EW-3201S acts as the core barrier layer that prevents fuel vapor permeation, ensuring compliance with stringent global emission standards such as EURO 7 and PZEV.
In underfloor heating systems, SVW™ EW-3201S blocks oxygen diffusion into closed water circuits, effectively preventing corrosion of metal components.
2. Long-Term Stability Designed for Lifetime Service
Industrial systems are expected to operate reliably for decades. SVW™ EW-3201S is engineered to meet these requirements through:
Excellent creep resistance under continuous load
Strong environmental stress crack resistance (ESCR) in aggressive media such as ethanol-blended fuels or heated water
Stable mechanical properties under thermal cycling and pressure fluctuations
Whether supporting fuel loads in a vehicle over its full service life or maintaining hydraulic stability in heating pipes for more than 50 years, SVW™ EW-3201S delivers consistent long-term performance.
3. Mechanical Synergy in Multilayer Structures
SVW™ EW-3201S is rarely used alone. Instead, it is integrated into multilayer co-extruded structures, where it works synergistically with materials such as PE, HDPE, PEX, and tie resins.
In fuel tanks, SVW™ EW-3201S provides a thin but highly effective barrier layer without compromising impact resistance.
In heating pipes,SVW™ EW-3201S is protected from moisture while maintaining continuous oxygen-blocking performance.
This multilayer design approach allows SVW™ EW-3201S to achieve high performance with minimal material thickness, enabling lightweight, cost-efficient, and durable industrial solutions.
4.Compliance with Global Standards and Regulations
EVOH-based industrial solutions support compliance with the world’s most demanding regulations:
Ultra-low fuel permeation limits for automotive applications
Long-life and energy-efficiency requirements in green building standards
SVW™ EW-3201S provides industrial manufacturers with a powerful solution for building safer, more efficient, and more durable systems across automotive, building, and other industrial sectors.
Application Advantages of SVW™ EW-3201S in Automotive Plastic Fuel Tanks
1.Superior Impact Resistance in Extreme Temperatures
Unlike metal fuel tanks that are prone to brittle fracture at low temperatures, SVW™ EW-3201S exhibits excellent toughness and impact resistance, even under extreme cold conditions.
Real-world and OEM validation tests demonstrate that multilayer EVOH fuel tanks can withstand:
-45°C hail and road debris impact without fuel leakage
High-speed crash conditions (ECE R34) while maintaining structural integrity
This makes SVW™ EW-3201S a critical safety component in fuel tank systems operating in cold climates.
2.Long-Term Structural Stability for Lifetime Service
Automotive fuel tanks must safely support up to 50 kg of fuel throughout the vehicle’s service life. SVW™ EW-3201S provides engineering-grade mechanical stability through a triple-protection mechanism.
3.Synergy of Mechanical Strength and Barrier Performance
Thin-Wall, High-Strength Lightweight Design
With a flexural modulus around 2,000 MPa (ISO 178), EVOH enables:
Barrier layers as thin as 50 μm, approximately 30% thinner than traditional designs
Significant vehicle weight reduction without compromising safety
Lightweight fuel tank systems directly contribute to improved fuel efficiency and extended driving range.
Application Advantages of SVW™ EW-3201S in Underfloor Heating Systems
1. Long-Term System Protection and Corrosion Prevention
EVOH oxygen-barrier pipes fundamentally eliminate these risks by maintaining an oxygen-free water environment, preserving system cleanliness and thermal efficiency over decades of operation.
2. Stable Performance in Real Construction Environments
SVW™ EW-3201S is typically used within a multilayer co-extruded pipe structure, such as:
PEX / adhesive / EVOH / adhesive / PEX
or
PE-RT / adhesive / EVOH / adhesive / PE-RT
This structure ensures:
The EVOH barrier layer is protected from external humidity
Long-term barrier stability even in high-moisture environments
Strong interlayer adhesion with peel strength ≥ 4 N/mm, preventing delamination during thermal cycling
As a result, EVOH pipes maintain consistent oxygen-blocking performance throughout their service life.
3. Long Service Life Aligned with Green Building Standards
Modern building codes increasingly require heating systems to match structural lifespans of 50 years or more. This makes EVOH piping a key component in sustainable and low-carbon building systems.
