| 摘要 |
PROBLEM TO BE SOLVED: To provide a composition for producing a sealing material for solar cell having high transparency, that can be produced stably without causing any sagging or sheet breakage during production of the sealing material for solar cell.SOLUTION: In a composition for producing a sealing material for solar cell containing two kinds of ethylene α-olefin copolymers A and B of different melting points, melting point (compliant with JIS K 7121, melting peak temperature in thermal flux differential scanning calorimetry, the same below) of the ethylene α-olefin copolymer A is lower than the melting point of the ethylene α-olefin copolymer B, the difference is 10°C-35°C, mass ratio of the ethylene α-olefin copolymer A to the ethylene α-olefin copolymer B is 3-33, the storage elastic modulus of the ethylene α-olefin copolymer A is 50-80 kPa at 80°C, and 20-50 kPa at 90°C, and the storage elastic modulus of the ethylene α-olefin copolymer B is 150-200 kPa at 80°C, and 20-50 kPa at 90°C.SELECTED DRAWING: Figure 1 |
