| 摘要 |
PURPOSE:To obtain a resin molded product showing a fine, spotty and colored external appearance, by dispersing colored grains having a mean diameter of a specific value or more in the resin. CONSTITUTION:Colored grains are not limited specifically if the mean diameter is 1mum or more. It is not desirable that the mean diameter is less than 1mum, as an external appearance of a resin molded product shows uniform monocolor extending over the whole area. As a coloring agent of the grains, dyes or com posite of them are acceptable, for example, cobalt pigment blood red (red), aureolin (yellow), chromium pigment chrome oxide (green), and manganese pigment mineral violet (violet) are available. Thermosetting resin or rubber or elastomer may be used for resin besides thermoplastic resin such as polysty rene, polycarbonate, modified polyphenylene oxide, acrylonitrile. butadiene.styrene copolymer and polypropylene, and a composite of them is also usable. A method known publicly such as compression molding or blow molding can be applied to the molding without limiting to an injection molding.
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