Technological watch

The present invention relates to a coating method for a flame-retardant coating composition, the method comprising: (a) applying a flame-retardant coating composition to a first surface of a support film (10) to generate a base film (11) having a flame-retardant coating layer (20) formed thereon; (b) applying a first porous adhesive layer (40) to a first surface (31) of a heat diffusion prevention layer (30); (c) laminating the base film (11) having the flame-retardant coating layer (20) formed thereon with the heat-diffusion-prevention layer (30) having the first porous adhesive layer (40) applied thereto such that the flame-retardant coating layer (20) comes into contact with the first porous adhesive layer (40), thereby forming a first laminate structure (50); (d) laminating the first laminated structure (50) so that the flame-retardant coating layer (20) and the heat diffusion prevention layer (30) are bonded by melting of the first porous adhesive layer (40), wherein steps (a) and (b) are performed in any order, and the support film (10) does not contain a release agent.