EVA Extrusion Line for Encapsulation Film
Encapsulation Film: Low Shrinkage
Encapsulation film produced on regular extrusion lines has naturally a shrinkage which effects not only the process of laminating but can result in destroyed wafers and therefore creating waste and thus increased production costs.
A low-shrinkage film allows a smooth and fast laminating process. The more shrinkage a film has the more carefully the warm up procedure must be controlled and could increase the laminating time. With the developed extrusion process it is possible to extrude EVA film at a high speed by keeping the shrinkage low. The process avoids tension in the film right from the start. Post annealing systems are therefore not required. That ensures not only a more profitable manufacturing of film but also an advantage in the sales of such film. For the module manufacturers it means that they can run their laminators more stable and as fast as possible by using low shrinkage film. Beside of the production of low-shrinkage film the system allows on top much higher speed and therefore higher output compared with conventional extrusion systems. Furthermore, due to the special designed surface of the EVA film, no PE interlayer is necessary anymore. The rolls can be winded without PE film in between. Also carrying paper which is sometimes used for the manufacturing of EVA film becomes unnecessary. This saves not only costs but also valuable resources. EVA film makers are faced to a higher profitability by using the new technology since the output is much higher. End of January 2010 TÜV Rheinland, Germany has completed the module test with the new line successfully.
CONTACT www.breyer-extr.com