PURPOSE: To obtain a low-cost, oscillation-damping and workable laminated product free from rust generation by stacking laminated materials of unwoven cloth consisting of thermoplastic resin and pulp or with addition of glass fiber, processed in a varying bland ratio, and forming the materials on both sides of an iron plate in an integrated form.

CONSTITUTION: Laminated products 2 processed in the form of an unwoven cloth after blending powder or fibrous thermoelastic resin, pulp or the thermoplastic resin, pulp and glass fiber in a varying blending ratio, are stacked and pressed on both front and rear of an iron plate 1 under heat to form a laminated plate in one piece.