A method for making a laminate includes: extruding a core layer, and advancing the same along a processing line; advancing upper and lower metal layers, and bending the upper metal layer to form a raised bent structure; laminating the upper and lower metal layers with the core layer by passing through a nip of a pair of laminating rollers, one of which has an embossing groove that is shaped to complement the raised bent structure and that permits the raised bent structure to pass therethrough; and embossing the core layer to protrude into the raised bent structure while the core layer and the upper and lower metal layers are passed through the nip. The upper metal layer is inclined with a tangent line that passes through the nip by an angle of less than 15 degrees when at a position immediately upstream of the nip.