SAN FRANCISCO, July 4, 2013 /PRNewswire/ -- 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.
Since the regular extrusion systems, using calenders or cast rolls, are limited to a certain speed/output, BREYER has developed a profitable system for the production of EVA film and other gluey materials.
With the developed extrusion process the first time it is possible to extrude EVA film at 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. In this way the line consumes also less energy.
EVA film makers are faced to a higher profitability by using the new technology since the output is much higher. For the module manufacturers using such low tension film it means that they can run their laminators more stable and as fast as possible.
They will have the advantage of trouble free production combined with a more reliable and efficient manufacturing. Notable module manufacturers are therefore very much interested in getting low shrinkage film.
Cause of the improved properties and performance this EVA film is about to set a complete new standard in the encapsulation film and its procedure during laminating.
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. Regrind material coming from the edge stripes can be processed again.
This saves not only costs but also valuable resources.
Finally the process can also be count as "green EVA film production line", since its process saves the interlayer, the carrying paper, has no energy consuming annealing system, a closed loop for the cooling circuit, and works with a low temperature extrusion process.
A pilot line (production size) in Breyers factory is ready for demonstration and function test as well as for production of rolls for the pre-marketing.
EVA resin as well as alternative materials for encapsulation can be tested there. Single components such as powder, additives, liquids as well as granules can be dosed. Customers recipe can be tested if desired.
End of January 2010 TUV Rheinland Germany has already completed the module test with EVA encapsulation film produces on with the new line with success.
In the meantime a number of systems were sold and installed wordwide successfully.
INTERSOLAR Nordamerika, 9. – 11. July 2013, booth 8716
During K 2013 in Dusseldorf, Germany please visit our booth No.16C18 in Hall 16.
The line is developed and produced by BREYER extrusion lines, Germany, www.breyer-extr.com.
SOURCE BREYER extrusion lines