EVA Photovoltaic Film Extrusion Line

Q: What is the EVA Photovoltaic Film Extrusion Line?

A: The EVA Photovoltaic Film Extrusion Line is specialized equipment for producing EVA films used for encapsulating photovoltaic modules. It includes the entire process from raw material mixing, extrusion molding, cooling, to winding.

Q: What is the raw material formula for EVA photovoltaic film?

A: The main raw materials for EVA film include EVA resin (vinyl acetate content 28-33%), crosslinking agents (e.g., dicumyl peroxide), antioxidants, UV absorbers, and light stabilizers.

Q: What are the features of the mixing tanks in this production line?

A: The production line is equipped with 10 cubic meter mixing tanks, capable of mixing 3 tons of EVA raw material at once. The total power consumption for the two tanks is less than 100KW, ensuring efficient mixing.

Q: What is the total installed power of the EVA production line?

A: The total installed power of the EVA photovoltaic film extrusion line is 1000KW, with the mixing tanks consuming 250-300KW. If producing POE film, the power requirement increases by approximately 20%.

Q: What is the annual production capacity of the line?

A: The annual production capacity of a single dual 180 main machine EVA photovoltaic film extrusion line is 1GW, with an hourly output of 850-1000KG. For pure POE film, the annual capacity is around 0.8GW.

Q: What are the characteristics of EVA film used in photovoltaic modules?

A: EVA film weighs 420g/sqm, with a thickness ranging from 0.4 to 0.45mm, providing effective encapsulation and protection for photovoltaic cells. The textured surface design reduces weight and cost.

Q: What are the features of the molds and cooling system in the production line?

A: The molds are 2650mm wide, resulting in a final film width of 1200mm. The cooling system uses 500mm diameter cooling rollers, which need to be cooled to -15°C using ethylene glycol as the cooling medium.

Q: What is the production speed of the line?

A: The production speed for EVA film is up to 12 meters per minute, and 8 meters per minute for POE film, with a designed maximum speed of 15 meters per minute.

Q: Why choose EVA over PVB?

A: EVA is cost-effective and suitable for large-scale production, with a lifespan of about 25 years. PVB, on the other hand, has a lifespan of over 50 years and is suited for specific high-demand applications. The photoelectric conversion efficiency of EVA film is 25%.

Q: What are the differences between EVA and POE production lines?

A: A POE production line can produce EVA film but requires higher current, stronger motors, and specialized mold heads. EVA raw materials can be sourced domestically, whereas POE materials are primarily imported.

Q: Is the production of EVA film environmentally friendly?

A: The waste edges of EVA film can be directly recycled, reducing production waste and optimizing resource utilization. The production process is environmentally friendly.