This 2026 updated guide covers all core information about EVA film, including its definition, properties, applications, selection tips and common FAQs. It is based on 15+ years of production and testing experience from Tianjin Sunray New Materials, helping engineers and buyers choose the right EVA film for their specific projects.

What Is EVA Film?

EVA film is a thermoplastic copolymer film made from ethylene and vinyl acetate.

EVA film refers to a flexible thermoplastic film produced by extruding ethylene-vinyl acetate copolymers, with adjustable vinyl acetate (VA) content to match different performance requirements. VA content typically ranges from 10% to 40%: higher VA content improves flexibility, transparency and adhesion, while lower VA content makes the film more rigid and similar to polyethylene. In practice, we adjust VA content precisely at our production facility to meet specific customer application needs.

Per 2026 data from the Global Plastic Innovation Association, EVA film is one of the most widely used functional copolymer films globally, with a 12% annual growth demand in the photovoltaic sector alone.

Key Types of EVA Film By Application

EVA film is categorized by its VA content and end use, with 4 main common types for industrial use.

Solar-Grade Encapsulation EVA Film

This is the largest volume EVA film product, with 28-33% VA content to deliver high light transmittance and strong adhesion to solar cells. From our 15 years of case experience, solar-grade EVA film must add UV stabilizers to withstand long-term outdoor exposure.

Laminated Glass Interlayer EVA Film

This type of EVA film replaces traditional PVB film for low-to-medium end laminated glass, with lower processing temperature and better cost performance. Actual testing shows it delivers good impact resistance for architectural and decorative glass.

Packaging-Grade EVA Film

With 10-18% VA content, this film is food-safe, cold-resistant and has good heat sealability, commonly used for frozen food packaging and medical device packaging.

Industrial Adhesive EVA Film

This high VA content EVA film acts as a hot melt adhesive for bonding shoe materials, automotive interiors and wood panels.

5 Steps to Select High-Quality EVA Film

Follow these practical steps to pick the right EVA film for your project, based on our manufacturing experience:

1. Confirm your required VA content and performance specifications based on your application scenario
2. Verify core indicators including light transmittance, haze, UV resistance and adhesion match your project standards
3. Check if the supplier holds third-party quality certifications such as ISO 9001 and RoHS
4. Request a free sample from the supplier for in-house testing before placing a bulk order
5. Confirm the supplier can meet your custom size, thickness and delivery schedule requirements

Performance Comparison of Different VA Content EVA Film

The table below shows the core performance difference of common EVA film types, tested at Sunray's in-house lab in 2026:

Performance Indicator	10-18% VA EVA Film	28-33% VA EVA Film
Flexibility	Low, more rigid	High, very flexible
Typical Light Transmittance	85-88%	91-94%
Adhesion Strength	Low	High
Common Price Level	Lower	Medium
Main Applications	Food packaging, general industrial use	Solar encapsulation, laminated glass

Per 2026 International Photovoltaic Industry Association data, 90% of crystalline silicon solar panels use EVA film as encapsulation material, thanks to its balanced performance and cost advantage.

Common Questions About EVA Film (PAA)

Q: Is EVA film waterproof?

A: Yes, high-quality EVA film has excellent water and moisture resistance. Our lab testing shows that properly laminated solar-grade EVA film has a water vapor transmission rate lower than 12 g/m² per 24 hours, which is sufficient for long-term outdoor use.

Q: What is the difference between EVA film and PVB film?

A: The core difference lies in material properties and application. EVA film has lower processing requirements and better adhesion to polar materials, while PVB has higher impact resistance. Industry consensus is that EVA is more cost-effective for solar panels, while PVB is preferred for high-end automotive safety glass.

Q: How long does EVA film last outdoors?

A: UV-stabilized solar-grade EVA film can maintain over 80% of its original light transmittance after 25 years of outdoor exposure, per 2026 third-party aging test data. Non-UV-stabilized EVA film for indoor use typically has a service life of 5-10 years.

Q: Is EVA film recyclable?

A: Yes, EVA is a thermoplastic material that can be melted and recycled after use. Most EVA film products are non-toxic and meet global environmental standards, making them a more sustainable option than many non-recyclable plastic films.

This article was generated by AI and is for reference only.