Enapsulate the future and illuminate the world|EVA / POE solar cell packaging film production line

Photovoltaic film is a kind of thin film material used for photovoltaic module packaging, mainly used in the module level packaging of solar panels. Photovoltaic module is the core device of the solar power generation system, which provides support for the cell line, provides maximum optical coupling for the cell and solar radiation, physically separates the cell and line, and conducts the heat generated by the cell.

The typical photovoltaic module is a flat plate packaging structure, from top to bottom are frame, photovoltaic glass, packaging film, crystal silicon cell, packaging film, backplane / photovoltaic glass (single glass / double glass), and junction box. Among them, the upper and lower layers of packaging film bond the crystal silicon cell with the photovoltaic glass and the back plate, playing a role in protecting the cell.

The cost of photovoltaic film in photovoltaic modules accounts for about 4-7%. Although the proportion is not high, it has a great impact on the service life and power generation efficiency of the modules. Generally speaking, in order to ensure the stable performance of the components during the service life (more than 25 years), the packaging film usually needs to have high light transmittance, high water vapor barrier rate, high volume resistivity, PID resistance (potential induced attenuation) performance, good weather resistance and other characteristics.

EVA solar cell film is used for solar cell packaging, after laminating curing and adhesive sealing, the battery components plays a high transmittance of light, prevent water vapor penetration, high and low temperature resistance, ultraviolet light resistance and other functions, to ensure the stable and efficient use of battery components, is a durable and reliable packaging material.

The EVA / POE solar cell packaging film production line produced by JWELL can be modified with customers, open up the whole production process chain, and intensively design the workshop to help customers save production costs. JWELL unique automatic die head adjustment, to achieve fast adjustment, intelligent and efficient. Unique screw design and unique electrical design play a very effective role in product quality stability and diaphragm weight stability.

Performance features of JWELL EVA Film production line

● The flow extension extruder adopts EVA single screw extrusion,  and the spool constant temperature circulating water cooling system solves the technical difficulties of EVA plasticizing and uncrosslinking.

● The roller adopts double-sided embossing, and solves the technical difficulties of the adhesive film stuck on the roller.

● The cooling part adopts cooling roller and stress elimination cooling bed, so that the film runs smoothly and fully finalized, to ensure that the shrinkage rate is less than 3%.

● The whole line adopts PLC full automatic control to realize the operation of man-machine interface.

● The production line is equipped with an online quality monitoring and control system to ensure the qualified rate of products.

● Design the micro-tension winding machine, the whole machine production line speed can reach 15m / min.

In addition, the unique oven design can protect the stress from the diaphragm. The unique cooling device and the setting device cooperate to ensure that the diaphragm is fully cooled and formed. In addition, specially equipped with double roll device, can realize friction roll, servo center roll, double roll, double function roll, and can achieve automatic meter cutting film roll, automatic axis and lower roll, intelligent and convenient.

Main technical parameters

Note:The specifications are subject to change without prior notice.