Abstract:
A spring structural resin molded product capable of eliminating the peeling of the fused part of the spring structure resin molded product by uniformly distributing cooling water throughout the entire surface of a chute to eliminate the overcooling and insufficient cooling of a three-dimensional structure by the cooling water and deeply drawing the width of the melting and continuous three-dimensional structure, and a device and a method for forming a surface layer on the spring structure resin molded product. The cooling water (C) is fed between a water permeable sheet (55) and a sloped plate (51a) to penetrate the cooling water (C) into the upper surface of the water permeable sheet (55) so as to form a cooling water upper layer (M). The three-dimensional structure (3) is supported on the cooling water layer (M) to form the surface layer so as to adjoin continuous adjacent lines with each other.