| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a rear surface protective sheet for a solar cell module in which concealment is improved by preventing a wiring member such as an electrode (interconnector) for mutually connecting end portions of photovoltaic devices or neighboring photovoltaic devices or a collector electrode called bus bar for mutually connecting cell strings from being seen through even when the rear surface protective sheet for the solar cell module is thin, which has a partial discharge voltage equal to or higher than 1000 V in an in-oil method and in which a heat transmission coefficient is improved for speedily transferring heat generated within the solar cell module to a surface of the rear surface protective sheet for the solar cell module.SOLUTION: A rear surface protective sheet for a solar cell module is formed by laminating a polyolefin-based resin multilayer film and a plastic film which are formed from at least two layers of A layer/B layer, in this order. The A layer is formed from a resin composition in which a polyethylene-based resin and a polypropylene-based resin are mixed. When the polyolefin-based resin multilayer film and the plastic film are bonded using an adhesive, total thickness is 55μm or more and 235μm or less, and an average light transmittance in a wavelength region of 380 nm to 750 nm is 25% or less.</p> |
