Laminate

A method for manufacturing a laminate including an inorganic substrate, a silane coupling agent layer, and a heat-resistant polymer film in this order, the method comprising:

• (1) a step of applying a silane coupling agent to at least one surface of an inorganic substrate;
• (2) a step of superimposing a heat-resistant polymer film on the silane coupling agent-coated surface of the inorganic substrate;
• and
• (3) a step of pressurizing the inorganic substrate and heat-resistant polymer film,
• wherein
• the heat-resistant polymer film is a polyimide film obtained by causing a dehydration ring-closure reaction of a polyamic acid which is obtained by a reaction between a diamine and a tetracarboxylic acid,
• a surface roughness (P-V value) of the inorganic substrate is 0.1 μm or more and 20 μm or less,
• a thickness of the silane coupling agent layer of the laminate is 0.05 times or more the surface roughness (P-V value) of the inorganic substrate,
• an area of a peak attributed to a functional group is 15 or less in a spectrum acquired by applying the silane coupling agent to a KBr plate by the same coating method as in step (1) to fabricate a coated plate and measuring the coated plate by infrared microspectroscopy, and
• the area of the peak attributed to a functional group is the value acquired by subtracting the area in the wave number range of 3000 cm−1 to 2770 cm−1 with base points of 3000 cm−1 and 2770 cm−1 from the area in the wave number range of 3400 cm−1 to 2400 cm−1 with base points of 3400 cm−1 and 2400 cm−1.