EVA solar film equipment laminating process need to pay attention to what?
Release date:2016-10-17 16:56 source:http://www.hzxz88.com Views:
Due to the solar panels should have high quantity of heat of the sun every day, the transfer to the energy of the solar panels and cannot directly into electrical energy.Need to affix EVA film, the light energy into electricity on the silicon wafer.It is because of EVA film the use features, make to enhance the power conversion efficiency of solar panels.And EVA film still can for solar panels have very good protection effect.In the process of EVA solar laminating film equipment, we should pay special attention to what issues?
A, laminating temperature control
In the process of the laminated, effect of temperature on the laminated plays a vital role.In practice, the laminate can be adjusted according to actual situation of hot plate temperature, and to ensure uniform temperature distribution in the laminate.If the temperature is too high in the laminate, could lead to a bubble imagination, but at the same time it can shorten the curing time accordingly.So, need to balance two factors, in order to achieve the best effect of laminated and efficiency.
Second, the speed control
EVA film paste is used to soften it, the heat when the film reaches after molten state, will fill in the gaps of the articles to be posted, the film can be covered in the entire surface.Then through high temperature curing film, forming stable macromolecular material.In the middle should pay special attention to, if the heat up too fast, will produce bubbles, influence film effect.
Third, to eliminate air bubbles
For now have EVA film bubble, we in the process should be to do a good job of bubbles eliminate before delivery.Is mainly due to bubbles in laminated, into the part of the air react with oxide, produce part of oxygen.We can be in front of the bubble forming, by means of vacuum clean air.
This is mainly because the EVA film has the following features:
1, is a type of film, rapid by heating to 135 ~ 140 ℃ can keep constant temperature 15 ~ 20 min, and the conventional type of film to be heated to 145 ℃, can only be constant temperature for 30 min.
2, high light transmittance, integral transmittance is greater than 90%.
3, good temperature resistance can withstand 40 ℃ 85 ℃ high temperature, low temperature, not happen heat bilges cold shrink, and good dimensional stability.
4, can withstand ultraviolet irradiation for a long period of time, and don't happen the phenomenon such as cracks, aging, than the service life of the ordinary film of the same kind.
Hangzhou new photoelectric material co., LTD is a professional manufacturer of EVA solar cell film.Company EVA film solar cells have an annual capacity of 3000 tons, 6 million square meters, the EVA solar battery plan three years film production capacity of 6000 tons, 12 million square meters.Main products: EVA film solar energy equipment.