Coloring pigment in plastics Testing Methods (1) test equipment two-roll mill roll revolution: 25 rev / min, the speed ratio of 1: 1.2 chrome plated roll. Platen press can be heated and cooled. Two pieces of stainless steel mirror panels fertilizer colorants Which is good reputation, inner frame: square-frame, sheet thickness 0.5mm. (2) Test material made of polyvinyl chloride resin, a plasticizer, a stabilizer, titanium dioxide, pigment. (3) Test Method would roll surface temperature is controlled at 160 ℃, PVC sheet thickness 0.4mm; refining plastic time: 7 to 8 minutes the film; tabletting: at a temperature of 165 ℃ ~ 170 ℃ tablet dwell time of 1 minute rapid cooling. (4) colorimetric measurement standard color value, calculated K / S value, color strength tests can be a good quality fertilizer colorants Which is the difference compared to both its standard sample coloring power, when adjusted to both have the same coloring . Testing may also be high density polyethylene, low density polyethylene, polypropylene or the like. How to properly use plastics coloring coloring indicators (1) of the same color is applied to different plastics coloring, the color performance, color strength and other indicators are not the same, strictly speaking mentioned color pigment in plastics coloring performance must mention its application solution quality. (2) The standard depth in color science, color depth through the sample prepared under standard conditions to determine the absolute depth of pigment in order to achieve a certain amount of color depth necessary to represent. Its representation as a standard depth, 1/3 standard depth, 1/25 standard depth. This representation can be designed by Schmelzer continuous shade depth map to visually represent it. Fertilizer colorants, Weifang Fuyuan, fertilizer colorants Which assurance provided by the Environmental Protection Technology Co., Ltd. Weifang Fuyuan. Fertilizer colorants, Weifang Fuyuan, fertilizer colorants Which is guaranteed Weifang Fuyuan Environmental Technology Limited (www.wfdafuyuan.com) (www.wfdafuyuan.com) this year introduced a new upgrade, the above picture is for reference only, please You call Tel picture on this page or to obtain the latest information, contact: MGA.