| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a back protective sheet which is excellent in strength, weather resistance, heat resistance, water resistance, light resistance, wind pressure resistance, snowfall resistance, chemical resistance, humidity resistance, antifouling property, light reflection property, light diffusion property, design characteristic, and other characteristics, improves remarkably humidity resistance particularly preventing invasion of water content, oxygen, etc., restrains deterioration of these characteristics in long term to a minimum, is rich in durability extremely, is excellent in protecting ability of these characteristics and constitutes a safe solar battery module at a lower cost, and stably provide a solar battery module using the back protective sheet. SOLUTION: In this back protective film for a solar battery module, a vapor deposition film of inorganic oxide is formed on a single side of a base material film, a coating film formed of composition composed of condensation polymerization substance which is formed by hydrolyzing silicon compound is formed on the vapor deposition film of inorganic oxide, and colored polyester based resin layer is formed on a surface of the coating film of the base material film on which the vapor deposition film of inorganic oxide and the coating film are formed. On the other side of the base material film, a resin layer containing ultraviolet ray absorbent is formed. The battery module uses the back protective film.</p> |
