The EPE solar film production line is very similar to the EVA solar film production line. The following is an introduction to the EVA film production line:
The EVA POE film production line of Nantong Jinweier Intelligent Equipment Co., Ltd. adopts the casting process to produce EVA POE solar cell encapsulation adhesive film.
The main raw material is imported vinyl acetate copolymer EVA POE, which is added with imported plastic additives and then heated, cast and extruded into a product. This adhesive film is non adhesive at room temperature, making it easy to cut and undergo thermal cross-linking curing and bonding enhancement reaction through hot pressing, resulting in permanent adhesive sealing. It is a novel thermosetting hot melt adhesive film.
Professional EVA encapsulation film for solar modules (photovoltaic modules) and related solar products is used to encapsulate solar panels. It is non adhesive at room temperature and easy to operate. Through hot pressing, thermal cross-linking and bonding enhancement reactions occur, resulting in permanent adhesive sealing. Product features: high transparency/high adhesion strength/high photo thermal stability/superior volumetric electrical composition.
Compared to EVA film, the biggest advantage of POE film is its low water vapor permeability and high volume resistivity, which ensures the safety and long-term aging resistance of components operating in high temperature and high humidity environments, enabling them to be used for a long time. Specifically, the superior performance of POE film compared to EVA film is demonstrated by the fact that POE film is a copolymer of ethylene and octene, with a saturated fatty chain structure and fewer tertiary carbon atoms in the molecular chain, exhibiting good weather resistance, UV aging resistance, excellent heat and low temperature resistance. Therefore, POE film has better aging resistance than EVA film.
By using modification methods such as photo grafting polar monomers, plasma surface treatment, or reactive grafting modification on POE, the bonding strength between POE film and materials such as glass and backsheet can be improved, resulting in excellent interfacial bonding performance.
Suitable for high-efficiency double-sided batteries, it can effectively enhance the conversion efficiency of the battery, improve the power generation rate and reduce the cost per kilowatt hour compared to ordinary single-sided power generation components. At the same time, the components can be vertically placed, providing more utilization methods.
POE adhesive film has lower water vapor transmission rate and greater cohesion, making it more suitable for double glass components. It can eliminate the need for edge sealing in the production of double glass components and prolong their service life.
However, compared to EVA film, POE film has a smaller production capacity and higher raw material prices. But it is the direction of future development.
Features of EPE film production line:
1. The production has a high degree of automation, with the advantages of fewer production processes, lower energy consumption, and lower costs;
2. A professionally developed stress relief device that can effectively eliminate residual stress generated during the stretching and production process of EVA film online, thereby solving the problem of thermal shrinkage of EVA film;
3. The special design of the casting molding part effectively solves problems such as sticking rollers and peeling;
4. The electrical control adopts a PLC human-machine interface, which has a high degree of automation;
5. The new automatic constant tension winding control system has precise, stable, and reliable tension measurement control, improving work efficiency.
