Abstract: A composite panel is provided comprising first and third polymer plies having fibers therein that are substantially parallel to a first fiber axis and a second polymer ply having fibers therein that are substantially parallel to a second fiber axis. The first polymer ply comprises material with a first melting temperature, and the second and third polymer plies comprise material with a second melting temperature higher than the first melting temperature. Plies are bonded together to form a composite by heating the plies at a first heating temperature that is higher than the second melting temperature. First polymer ply material is provided at a first side of the composite. The first side of the composite is positioned adjacent to the core, and the composite and the core are heated at a second heating temperature that is higher than the first melting temperature but lower than the second melting temperature.