| 摘要 |
PROBLEM TO BE SOLVED: To provide a reflection film with good adhesion with a sealant, which enables the increase in a photoelectric conversion efficiency of a solar battery module and specifically, to improve the adhesion with a sealant in a reflection film for a solar battery backsheet, by which an uneven structure can be formed in parallel with film formation, and the uneven structure is not planarized in vacuum heating lamination.SOLUTION: A reflection film for a solar battery backsheet comprises: a surface layer having an uneven structure; and a reflection layer having an uneven structure following the uneven structure of the surface layer. The surface layer includes: a composition for heating adhesion arranged by blending an ethylene-based resin, a propylene-ethylene copolymer, and/or a propylene-ethylene-butene ternary copolymer. The reflection layer includes a composition for reflection which is arranged by adding optically reflective particles to a propylene-based resin.SELECTED DRAWING: Figure 1 |
