SILICA BLACK-CONTAINING COATING MATERIAL, MOLDING MATERIAL AND SHEET

摘要

A bad influence of electromagnetic waves, especially, low-frequency electromagnetic waves generated by an electric product, such as a portable telephone upon a human body, and a bad influence of an artificial product upon a human body are minimized. At least a part of an electric product or an artificial product other than the electric product is formed out of a silica black-containing coating material and/or molding material, or a silica black-containing sheet is stuck on either an outer surface or an inner portion of an artificial product. For example, a silica black-containing coating material is applied to the surface of a product, such as a portable telephone and a can of a canned soft drink, a casing of an article is formed out of a silica black-containing plastic, and an adhesive sheet containing silica black is stuck on a product.