The backsheets are preferred as the backing sheet due to their excellent strength, weather resistance, UV resistance are moisture barrier properties.
The Primary functions of our backsheets are : vapor barrier, hpysical protection of the wiring and other sensitive components, electrial insulation and reduction of cell operating
temperature. The most popular backsheet structure is a tri-laminate "sandwich" of polyester film between two layers of Tedrar? film. This tri-laminate is commonly reffered as TPI.
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