| 摘要 |
The invention relates to a multi-layer sheet (1) for the back face of a solar module, comprising a first outer layer (2) facing away from the solar cell, a second outer layer (6) facing towards the solar cell, and a support layer (4) in-between them, there being in each case between support layer (4) and the outer layers (2 and 6) an interlayer (3 and 5, respectively), and the support layer (4) comprises a polymer and a filler, the filler comprising fibres, and the ratio of fibre length to average fibre diameter being between 20:1 and 5:1, preferably between 15:1 and 5:1, most preferably between 15:1 and 9:1, and also to a method for producing a multi-layer sheet (1) of this kind, comprising the steps of weighing out, reactive compounding, filtering, coextruding, surface-treating and the spheroid-like surface embossing of a depth of roughness of 10‑20 pm by means of an air knife, and to the use of a multi-layer sheet (1) of this kind in a solar cell. |
