| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a protective film for a distributing board, which has a high optical reflectance, and the optical reflectance of which hardly lowers.SOLUTION: The protective film for a distributing board includes: a transparent fluororesin layer containing a fluororesin as a main component; and a reflective layer laminated on the rear surface of the fluororesin layer directly or through a transparent adhesive layer. The fluororesin layer has on the rear surface, a modified layer containing a siloxane bond and a hydrophilic organic functional group. A light transmittance to light having a wavelength of 600 nm of the fluororesin layer is preferably 60% or more. The reflective layer may contain a metal film or a white pigment and a binder thereof. A contact angle with pure water of the rear surface of the fluororesin layer is preferably 90° or less. An average thickness of the modified layer is preferably 400 nm or less. The hydrophilic organic functional group is preferably a hydroxyl group, a carboxyl group, a carbonyl group, an amino group, an amido group, a sulfide group, a sulfonyl group, a sulfo group, a sulfonyl dioxin group, an epoxy group, a methacrylic group or a mercapto group.</p> |
