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EPE solar adhesive film

EPE=EVA+POE+EVA, which is a three-layer co extruded solar adhesive film. Compared with single-layer EVA and POE adhesive films, it achieves high performance and saves costs.

Basic parameters of EPE solar photovoltaic backplate adhesive film production line (please consult sales engineers for details)

The EPE solar adhesive film production line is very similar to the EVA solar adhesive film production line. The following is an introduction to the EVA film production line:

The EVA POE film production line adopts a casting process to produce EVA POE solar cell packaging adhesive film.

The main raw material is imported vinyl acetate copolymer EVA POE, which is added with imported plastic additives and then extruded into a product through heating and casting. This adhesive film is non adhesive at room temperature, making it easy for cutting operations to undergo thermal crosslinking curing and bonding reinforcement reaction after hot pressing, resulting in permanent adhesive sealing. It is a novel thermosetting hot melt adhesive film.

Solar modules (photovoltaic modules) and related solar products are specially designed with EVA packaging film for packaging solar panels, which is non adhesive at room temperature and easy to operate. After hot pressing, thermal cross-linking occurs and adhesive reinforcement reactions occur, resulting in adhesive sealing. Product features: high transmittance/high adhesive strength/high photothermal stability/superior volumetric resistivity.

One of the major advantages of POE adhesive film compared to EVA adhesive film is its low water vapor transmittance and high volume resistivity, which ensures the safety and long-term aging resistance of components operating in high temperature and 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 its copolymer of ethylene and octene, which is a saturated fatty chain structure with fewer tertiary carbon atoms in the molecular chain. POE film exhibits good weather resistance, UV aging resistance, and excellent heat and low temperature resistance. Therefore, POE film has better aging resistance than EVA film.

2、 By modifying POE with photografting polar monomers, plasma surface treatment, or reactive grafting modification, the adhesion between POE film and materials such as glass and backing is improved, resulting in excellent interfacial bonding performance.

3、 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 of electricity compared to ordinary single-sided power generation components. At the same time, the components can be placed vertically and have more utilization methods.

4、 POE adhesive film has lower water vapor permeability and greater cohesion, making it more suitable for double glass components. It can eliminate the need for edge sealing and prolong the service life of the produced double glass components.

However, compared to EVA film, the production of POE film is smaller and the raw material price is expensive. 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, low energy consumption, and low cost;

2. Our stress relief device can effectively eliminate the residual stress generated during the stretching and production process of the EVA film online, thereby solving the problem of thermal shrinkage of the EVA film;

3. The special design of the casting forming part perfectly solves problems such as roller sticking and peeling;

4. The electrical control adopts a PLC human-machine interface, with a high degree of automation;

5. The latest automatic constant tension winding control system, with precise, stable, and reliable tension measurement control, improves work efficiency.