Method for treating coating film

摘要

A method for treating coating film is provided, whereby a window glass can be securely bonded to a substrate, even when the substrate has been furnished with a hydrophilized coating film. Before bonding a window glass 14 to a clear top-coat coating film 7 which contains a silicate compound as a hydrophilizing agent, with using a window glass adhesive 16 as an organic adhesive, the clear top-coat coating film 7 is coated with a body primer which contains an organic reactive group reactable with an organic resin and which contains an additive 13 formable a covalent bonds CB with the silicate compound in the clear top-coat coating film 7.