- Solar EVA and Cell Encapsulation Film
Green energy is the most talked-about topic at the moment. Undoubtedly, solar technology becomes an outstanding one of these. Global solar technology products is rolling out by over than 45% annually before decade. The development and investment of solar technology 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 and pressing. The cured safety layers can prevent solar modules from severe environment harm while keeping high light transmittance.
Twin screw extrusion system
Twin screw extruder direct extrusion technology is one the most important characteristics of this relative line. The successful employment of twin screw extruder makes EVA resin and a true number of additives in-line compounding a reality. This meaningful improvement is a total consequence of our profound understanding of twin screw extruder and wealthy practices. This creativity is more than technical advantages, but reducing working costs substantially.
The excellent mixing aftereffect of twin screw extruder is playing a leading role in EVA film production, because it involves a lot of additives, and it needs good compounding. Unique screw elements and screw profile are designed based on the physical and chemical nature of EVA resin. It maintains each component mixing homogeneously while avoiding pre-crosslinking. It is a basis of high efficiency as well.
Special cooling route of calenders will keep the temperature of calendar surface standard. Peculiar silicon coated calendar can remove 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 steady pressure. The close-loop will keep the operational system stable running intelligently.
Higher Productivity, Lower Shrinkage
This is one of the givens which guarantee the low shrinkage and high light transmittance.
Full automatic in-line thickness tester log and record the thickness in time. The full automated constant tension winding system was created make reference to the mechanical nature of EVA film. Less margin waste materials, Higher rate of completed products stem from constant optimizing of each device during long-term practice of production. These optimizations help reducing working cost significantly.
Intelligent Control System
From relay to industry computer, we have more options available. The logic setting between each useful modules makes exact control simple. Safer creation is because considered mechanical and electrical protection. The complete sync and synergetic control of every unit guaranteed the high quality final product relaxed.
Excellent Quality of EVA Film
The pursuit of each detail leads to a worldwide world class EVA solar cell encapsulation film. We can assurance the shrinkage less than 3%, and the line rate reach at 5m/min.