Patent ID: 7550196

Claim:
An automobile interior material or construction sheet comprising: a foamed layer produced by foaming and fusing together chips, said chips selected from the group consisting of polypropylene chips, polyethylene chips, polyurethane chips, and expanded polystyrene chips; a short fiber layer produced by carding and setting short fibers including polypropylene fibers and polyethylene fibers in a mixing ratio of 3 to 7:7 to 3, on one side or both sides of the foamed layer; and layers formed on both sides of the automobile interior material or construction sheet by coating at least one material comprising plasters in a predetermined thickness, drying using hot air, and then pressing the material while heating to form an automobile or construction panel, wherein, the short fibers are interlaced with each other in the foamed layer through a needle punching process so that the short fibers are embedded in a shape of a truss in the foamed layer, and the short fiber layer is set by heating to 120 to 250° C. while the portions of the short fibers are pressed to melt the portions of the short fibers exposed outside the foamed layer and then harden the molten portions of the short fibers to form the short fiber layers on the foamed layer.