Features
Introduction
EVA film is a revolutionary new type of interlayer for glass and plastic sheet lamination and encapsulation. It is one of the best alternatives to costly PVB due to quite a number of advantages.
EVA stands for ethylene vinyl acetate. EVA resin, together with a number of ingredients, is heated and mixed thoroughly and is then extruded through a flat die of a special design plastic extruding machine. EVA film is then formed. It is finally wind up in roll for storage and packing.
This extraordinary adhesive is non-sticky and inert to water moisture. Handling and glass assembly could be done under room temperature. No air conditioner and no de-humidifier are required.
Properties
- EVA is a thermoplastic copolymer
- It contains no plasticizers
- Clear films available in different transparency
- White films available in different whiteness
- Available in different colours
- Color films available in clear, translucent and opaque
- Special EVA films available for PDLC and photovoltaic solar panel encapsulation
- Extraordinary adhesive
- Outstanding tensile strength
- Remarkable elongation
- Inert to water moisture
- Thermo-proof
- Acoustic proof
- Low haze for selected film
- Anti-UV for selected film
- Low process temperature
- Super high visible light transmission for selected film
- Non-sticky under room temperature
- Lamination could be done by various processes such as silicon pad, vacuum bag, vacuum ring and roller press, etc
- Handling, storage and glass assembly done under room temperature
- Excellent adhesion to glass and plastic sheets such polycarbonate
- Compatible to various materials such as woven & non-woven fabric, paper, PET, glass fiber and metal, etc
Technical Data
| Description | EVA Film |
| Density | 0.97 g/cm3 |
| Bonding Temperature | ≤ 100℃ |
| Bond strength | ≥ 3 kg/cm |
| Flow Temperature | 80℃ |
| Flow Rate | 1.2 cm3/s℃ |
| Haze Rate | ≤ 5% (Series T) |
| ≤ 1% (Series CT) | |
| Visible Light Transmission | ≥ 85% |
| UV Screening | 98% |
| Luminous Efficiency | 87% |
| Water Absorption (23℃ for 24 hrs) | 0.1% |
| Tensile Strength at Break | 290 kg/cm2 |
| Luminous Efficiency | 2340 kg/cm2 |
Handling
- Cutting should be done with clean hand and proper tool
- Avoid from contamination
Storage
- Stored at 30℃ or below
- Keep away from sunlight
- Keep away from heat source
- Keep dry
- Avoid sting
- Avoid pressing with hard objects
- After cutting, remaining EVA roll should be packed and sealed properly if it would not be used for a long period
