In order to overcome the drawbacks dye coloring, improve the quality of plastic products, with the continuous development of the plastics industry, innovative types of plastic resins, additives types of plastics processing equipment and technology, a breakthrough, another way plastics coloring - - colored masterbatch has been widely adopted, colored masterbatch technology application and practice are continuously improved. The so-called masterbatch, which uses some kind of process and corresponding equipment, in the role of aid, the pigment (or dye) into the carrier, through heating, plastics, stirring, shearing, and finally to the pigment powder with a carrier molecule molecular resin is fully integrated, and then made with the resin particles of similar size particles. Such a high concentration of colorants called masterbatch, its role and "saccharin" similar to use, simply add the resin to be colored in a small proportion (1% to 4%), to ensure that fertilizer colorant , you can achieve the purpose of the colored resin. 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 stainless steel mirror panels, 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 ℃, fertilizer colorants, PVC sheet thickness 0.4mm; refining plastic time: 7 to 8 minutes the film; tabletting: at a temperature of 165 ℃ ~ 170 ℃ tablet time 1 Minutes later dwell rapid cooling. (4) colorimetric measurement standard color value, calculated K / S value, quality fertilizer colorants may be differences in color strength test and compare both its standard sample coloring power, fertilizer colorant companies, when adjusted to two It shall have the same coloring. Testing may also be high density polyethylene, low density polyethylene, polypropylene or the like. Fertilizer colorants _ _ fertilizer Weifang Fuyuan colorant products offered by Environmental Science and Technology Co., Ltd. Weifang Fuyuan. Fertilizer colorants _ _ fertilizer Weifang Fuyuan colorant products 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 dial this Tel pages or pictures on obtain the latest information, contact: MGA.