Non-combustible panel manufacturing method and non-combustible panel

摘要

PROBLEM TO BE SOLVED: To effectively suppress warpage of the entire panel and generation of unevenness on the surface of a face material in manufacturing a nonflammable panel in which a core material is sandwiched between two face materials made of metals having different linear expansion coefficients. , A non-combustible panel with high quality and good appearance can be obtained at a low price. SOLUTION: A face material preparation step of preparing a first face material 21 and a second face material 22 having a linear expansion coefficient different from that of the first face material 21, and foaming a raw material of a resin-based foam in an unconstrained state. A material foam forming step of reacting to obtain a naturally foamed material foam 10B, a core material panel forming step of cutting the material foam 10B to form a predetermined core material panel 10 shape and dimensions, and a core material panel molding. The core material panel 10 obtained in the step is arranged between the first face material 21 and the second face material 22, and the first face material 21 and the second face material 22 are attached by the adhesive 30. It includes an bonding process for bonding. [Selection diagram] Fig. 4