| 摘要 |
PURPOSE:To sharply improve a solar cell of this design in impact resistance by a method wherein a transparent buffer layer is provided between a filler layer and a transparent weather-resistant film. CONSTITUTION:A filler layer 2 of FVA is laid on a slate tile 1, a solar cell element 3 is laid thereon, and a filler layer 2 of EVA is made to overlap, a transparent buffer layer 6 of silicone rubber or the like and PET are successively laminated thereon, and the whole laminated piece is heated at a temperature of 150 deg.C for 40 minutes or so in a vacuum of 10<-3>Torr with a laminating device, whereby the solar cell element 3 end the slate tile 1 can be formed into an integral structure. Provided that an amorphous silicon solar element formed on a glass board of 1.1<t> is used as the solar cell element 3, a silicone rubber 1mm thick is used as a buffer layer 6, a PET film 4 is formed as thick as 100mum, when an integral structure composed of these components is subjected to an impact test based on a [impact test method of building board] prescribed in JIS A 1421-1981, both the solar cell element 3 and the slate tile are hardly damaged, so that the integral structure concerned meets the requirements of JIS as a roof building materiel. |
