What is EVA film?
EVA film, is a plastic film made from Ethylene-Vinyl Acetate Copolymer (EVA). Here are a few key characteristics about EVA film:
1, material properties: it is a soft, transparent plastic film with good tensile strength, elongation at break, flexibility and impact resistance. These characteristics make EVA film has a wide range of applications in many fields.
2, multifunctional use: EVA film is not only used for photovoltaic cell encapsulation, but also often used in packaging materials, construction materials, protective film for electronic products and many other products in the manufacturing process. Its high transparency and adhesion enables it to be applied to a variety of interfaces including glass, metal and plastic.
3、Environmental attributes: EVA, known as the environmental protection film, is a biodegradable material that will not harm the environment when discarded or burned, so it is considered a green and biodegradable material.
4、Industrial applications: In addition to its wide use in the field of photovoltaics, EVA film is also used in other industrial fields such as the shoe industry, where it is valued for its softness and low-temperature resistance.
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WHAT IS THE THICKNESS OF EVA FILM?
EVA (ethylene-vinyl acetate) film, or ethylene-vinyl acetate copolymer film, is a key material commonly used in the encapsulation of solar PV modules. Its main function is to bond and seal the solar cell sheet between protective layers to ensure the long-term stability and durability of the cell. Here are some more details about EVA film:
- - Thickness range: While common EVA film thicknesses range from 0.4mm to 0.6mm, the actual thickness used may vary depending on the PV module design and manufacturer's requirements.
- - Selection principles: Choosing the right thickness of EVA film is critical to ensuring the performance and longevity of the PV module. Thinner films may not provide adequate protection, while thicker films may affect the optical performance of the module and increase costs.
- - Manufacturing and storage: The manufacture of EVA film involves the addition of a variety of additives, including cross-linking agents and antioxidants, to enhance its performance. During storage, direct sunlight and high-temperature environments should be avoided and maintained at a temperature of 0-30°C and a humidity of less than 60%.
What is the main component of EVA film?
The main component of EVA film is Ethylene-Vinyl Acetate Copolymer, often abbreviated as EVA. EVA is a copolymer consisting of two monomers, ethylene (E) and vinyl acetate (VA). The ratio of these two components can be adjusted to meet the needs of different applications. The following is a detailed description of EVA copolymers:
- Ethylene: Provides toughness and durability to the polymer
- Vinyl Acetate: gives the material flexibility and elasticity
In addition, some other additives, such as tackifiers and antioxidants, may be added to improve the performance of EVA films in practical applications. Tackifiers can improve bond strength, while antioxidants can slow down the aging of the material and extend its service life.
Overall, EVA film is a kind of encapsulation material with excellent performance, which is widely used in solar photovoltaic modules and other fields, and its main components can be adjusted to meet the needs of different applications in order to achieve the best performance.