It is a commonly used inspection method to measure the fineness of pigments, extender pigments and impurities in paint with a scraper Fineness Meter. The instruments and operation methods used are basically the same at home and abroad. The judgment of the results is generally based on the density of the particles revealed, but the standard methods of different countries have different regulations on the density of particles, some are stricter, and some are looser.
Along with the development of my country's foreign trade, in recent years, a considerable amount and variety of Japanese paints have been imported every year. In the inspection work of imported Japanese paints, we found that in addition to the use of particle density to judge the fineness value in the method of measuring the paint fineness with a scraper Fineness Meter specified in the Japanese standard, it also specifically stipulates that the line method is used to judge the fineness value. degree value.
For this reason, we researched and experimented on the method of judging the fineness by the line method, and in 1988, we discussed this problem with the technical staff of Japan CHINA Paint Co., Ltd., conducted joint experiments, clearly understood and unified methods . Basically figured out how to use the line method to judge the fineness and the scope of application, etc., the introduction is as follows
