| abstract |
(57) [Summary] [PROBLEMS] A conventional lightweight laminate has poor weather resistance. Further, when a (meth) acrylic FRP having good weather resistance is simply used as the protective layer of the lightweight laminate, the FRP surface has poor smoothness. Accordingly, an object of the present invention is to provide a lightweight laminate having excellent weather resistance and exhibiting smooth and good surface properties. SOLUTION: In a lightweight laminated board in which protective layers are provided on both surfaces of a lightweight plate-like core material including a number of voids, at least one of the protective layers is a (meth) acrylic FRP layer. The (meth) acrylic FRP layer is a cured product of a molding material containing 5 to 70% by weight of (meth) acrylic resin and 5 to 50% by weight of fiber, and the (meth) acrylic resin is , 0.05 to 1.5 mol / 1000 carboxyl groups g (meth) acrylic polymer. |