| 摘要 |
PROBLEM TO BE SOLVED: To provide: a laminate film having both of a hydrolysis resistance and a visible light-blocking property; a backsheet for solar battery modules; and a solar battery module.SOLUTION: A laminate film comprises, at least, a first layer including polyester and a white pigment, and a second layer including polyester. The first layer is in contact with at least one surface of the second layer. The first layer has a white pigment density of 1.0×10-1.0×10g/cm. The second layer has a thickness of 100-300 μm. In the whole laminate film, the concentration of the white pigment is between 0 and 2 mass%, exclusive. In the whole laminate film, the terminal carboxyl group concentration is 6-30 eq./ton. |
