| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface protective sheet for a solar cell, suppressing blocking during production processes and improved in adhesion between a fluororesin layer and a base material layer.SOLUTION: In a surface protective sheet 1 for a solar cell comprising a base material layer 2 and a fluororesin layer 3, the fluororesin layer 3 is formed through cross-linking of a fluororesin having a hydroxyl group and polyisocyanate having an isocyanate group. The mass ratio of the isocyanate group to the hydroxyl group (NCO/OH) is in the range from 0.6 or more to less than 0.9. The glass transition temperature of the fluororesin layer 3 is 50°C or above. The dynamic storage elastic modulus at 25°C after the fluororesin layer has been subjected to pressure cooker processing at 105°C and 100% RH for 96 hours is less than 1,500 MPa. |
