Toyal Solar ® is a back sheet for solar cell modules which possesses excellent long-term reliability. The newly developed M-Polyester film drastically extends the lifetimes of solar cell modules. Combined use with the Epr coating layer developed by Toyo Aluminium significantly improves adhesiveness with EVA film.

Hydrolysis resistance is 4 times greater than PET film

Hydrolysis resistance of M-Polyester: Pressure cooker test (121ºC, 2 atm, 100% RH)

Fig. 1 Fracture strength retention

Fig. 2 Fracture strength retention

M-Polyester cuts ultraviolet rays of 380 nm or less.

Ultraviolet light transmittance of M-Polyester

Deterioration of M-Polyester on exposure to ultraviolet light

Fig. 1 Fracture strength retention

Fig. 2 Fracture strength retention

Photovoltaic (PV) Modules