TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The organic solvent includes at least two kinds of organic solvent or an organic solvent having a boiling point of greater than or equal to 150 degrees C. The proportion of the organic solvent having a boiling point of greater than or equal to 150 degrees C with respect to the total amount of the organic solvent is 3-30 mass%. The organic solvent is a compound having a hydrocarbon ring of a 6-7 membered ring. The infrared light reflecting layer reflects left-handed circularly polarized light. The infrared light reflecting layer has at least one layer each of a layer reflecting right-handed circularly polarized light and a layer reflecting left-handed circularly polarized light. In the method at least one of the infrared light reflecting layers reflects infrared light at a wavelength of greater than or equal to 800 nm.    TECHNOLOGY FOCUS - POLYMERS - Preferred Method: In the method, a photopolymerization initiator is added to the polymerizable liquid crystal composition. The method further comprises a step of laminating at least two infrared light reflecting layers by repeating at least once a set of the coating step using the other kind of the polymerizable liquid crystal composition on the infrared light reflecting layer, the alignment step, and the irradiation step. Preferred Components: The monofunctional monomer is a (meth)acrylate compound. The amount of the monofunctional monomer added with respect to the total mass of the polymerizable cholesteric liquid crystal compound and the monofunctional monomer in the polymerizable liquid crystal composition is 2-30 mass %. The amount of chiral agent added with respect to the total mass of the polymerizable cholesteric liquid crystal compound and the monofunctional monomer in the polymerizable liquid crystal composition is 1-18 mass %. The HTP of the chiral agent is less than or equal to 40 mu m-1. The substrate is a polyethylene terephthalate film. EXAMPLE - Coating liquid composition (comprising 4-(4-(3-(acryloyloxy)propoxy)benzoyloxy)-3-methylphenyl 4-(3-(1-hydroxyallyloxy)propoxy)benzoate (95%), 2,2'-(4,4'-(4,4'-((3R,3aR,6R,6aR)-hexahydrofuro(3,2-b)furan-3,6-diyl)bis(oxy)bis(butane-4,1-diyl))bis(oxy)bis(4,1-phenylene))diacetaldehyde (4.5%), 4-((4-cyanophenoxy)carbonyl)phenyl 4-(4-(acryloyloxy)butoxy)benzoate (5%), cyclohexanone (19) and methylethyl ketone(172%)) was coated onto the surface of a polyethylene terephthalate film, at room temperature using a wire bar. The film was dried at 30 degrees C for 30 seconds, and then heated in an atmosphere at 100 degrees C for 2 minutes to form a cholesteric liquid crystal phase. The crystal phase was irradiated with UV rays in a nitrogen-purged atmosphere for 3 seconds to obtain infrared light reflecting film.