TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The outer layer has a glass transition temperature of 10-70 degrees C and is cross-linked. The outer layer is based on a crosslinkable fluoropolymer and contains optional additives. The composite molding comprises the outer layer based on polyfluoroethylene alkyl vinyl ether (PFEVE). The outer layer has a thickness of 0.5-200 mu m. The composite molding comprises a solar reflector for solar thermal plants. The composite molding facing the sun side, comprises: at least the self-healing layer, preferably the PFEVE-based layer; a first support layer containing polymethyl methacrylate (more than 50 wt.%) or polymethyl methacrylate-containing polymer blend with a thickness of 6 mu m-10 cm, or 50-400 mu m an adhesive layer, preferably an ethylene-acrylate hot-melt layer having the thickness of 20-80 mu m; a second support layer made from polycarbonate or a polyesters having the thickness of 0.5 mu m-2 cm or from polyester or a polyolefin having the thickness of 100-400 mu m, where a reflective coating of silver, silver alloy or aluminum is applied on the backside of the second support layer by physical vapor deposition (PVD) or chemical vapor deposition (CVD); and optional further coatings applied by PVD or CVD, another scratch-resistant coating, a duroplastic polysilazane layer or a silicon oxide film having the thickness of 10-100 nm. The PFEVE-based layer is additionally provided with another scratch-resistant coating, conductive layer, anti-soiling coating and/or reflection-enhancing layers or other optically functional layers. The PFEVE-based layer is provided subsequently with a further functional layer. Preferred Method: The PFEVE-based formulation is applied in the form in organic solution on the composite molding and subsequently dried. The coating in-line takes place immediately after the production of the composite molded body. EXAMPLE - Lumiflon LF-9716 (RTM: Polyfluoroethylene alkyl vinyl ether) (28.9 wt.%) was presented in a solvent mixture of ethyl ethoxy propionate (12.4 wt.%) and butyl acetate (37.3 wt.%) and stirred, then dibutyltin dilaurate (0.0013)) Tinuvin 400 (RTM: UV absorber) (3.4 wt.%) and (RTM: Hindered amine light stabilizer) (1.1 wt.%) were mixed to obtain a homogeneous mixture. Subsequently Desmodur N 3300 (RTM: Polyisocyanate) (16.9 wt.%) was added and stirred for 10 minutes. The paint was coated using spiral applicator on the polymethyl methacrylate side of the substrate and dried for 2 hours at 80?C to obtain composite moldings.