Solar EVA and Cell Encapsulation Film
Green energy is the most talked-about topic at present. Undoubtedly, solar technology becomes a superb one of them. Global solar technology products has developed by over than 45% annually before decade. The development and investment of solar energy of China exceeded the global world average.
Solar module is laminated by steel glass–EVA film–semiconductor wafer–EVA film- backsheet as it shown in figure « Schematic of Solar Cell Encapsulation ». Cross-linking and curing shall happen as the composite structure will be heating system and pressing. The cured safety layers can prevent solar modules from severe environment damage while keeping high light transmittance.
Twin screw extrusion system
Twin screw extruder direct extrusion technology is one the most important characteristics of this line. The successful employment of twin screw extruder makes EVA resin and a true number of additives in-line compounding a reality. This significant improvement is because our serious understanding of twin screw extruder and wealthy methods. This creativity is more than specialized advantages, but reducing working costs substantially.
The wonderful mixing aftereffect of twin screw extruder is playing a leading role in EVA film production, since it involves a lot of additives, and it needs good compounding. Unique screw screw and elements profile are designed according to the physical and chemical nature of EVA resin. It continues each component mixing homogeneously while avoiding pre-crosslinking. It is a basis of high productivity as well.
Special cooling channel of calenders continues the temperature of calendar surface uniform. Peculiar silicon coated calendar can take away the stress of EVA film effectively so that lower the shrinkage rate significantly.
German-made gear pump ensures melt getting into T-die with constant quantity and stable pressure. The close-loop can keep the operational system stable running intelligently.
Higher Productivity, Lower Shrinkage
That is one of the givens which guarantee the lower shrinkage and high light transmittance.
Full automated in-line thickness tester log and record the thickness with time. The full automatic constant pressure winding system was created make reference to the mechanised character of EVA film. Less margin waste, Higher rate of finished products stem from constant optimizing of each unit during long-term practice of creation. These optimizations substantially help reducing operating cost.
Intelligent Control System
From relay to industry computer, we’ve more options available. The logic setting between each practical modules makes precise control simple. Safer production is because considered mechanised and electrical protection. The complete sync and synergetic control of every unit guaranteed the high quality final product at ease.
Excellent Quality of EVA Film
The pursuit of each detail leads to a worldwide top notch EVA solar cell encapsulation film. We can guarantee the shrinkage significantly less than 3%, and the relative collection rate reach at 5m/min.