MANUFACTURING METHOD OF RESIN MOLDED OBJECT FOR SHIELDING ELECTROMAGNETIC WAVE

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of a resin molded object for shielding electromagnetic waves which can efficiently form an electromagnetic shielding layer at low cost on the face of the resin molded object to which an electromagnetic wave shielding process is applied simultaneously when the resin molded object of such as a resin housing is formed. SOLUTION: A coating material layer of a conductive base material sheet is arranged at a position used as the face of the resin molded object to be molded to which the electromagnetic wave shielding process is applied. The conductive base material sheet is formed by laminating a coating material in a finger-touch dry state on the face of a vehicle impregnating base material which is bendable and deformable, wherein the coating material includes conductive metal particles dispersed in a vehicle. When the resin molded object is formed, the conductive base material sheet is heated and pressurized to make the coating material layer-closely into contact with the face of the resin molded object to be molded to which the electromagnetic wave shielding process is applied, then the vehicle of the coating material layer is impregnated into the vehicle impregnating base material to form the electromagnetic wave shielding layer, in which the conductive metal particles of the coating material layer are flat-rolled and deformed between the resin molded object and the conductive base material sheet. The conductive base material sheet is peeled off and removed from the resin molded object in such a state that the electromagnetic wave shielding layer remains on the face of the resin molded object to which the electromagnetic wave shielding process is applied. COPYRIGHT: (C)2009,JPO&INPIT