Plastic profiles from confirmation drawings to finished products, need to go through multiple processes, the following we mainly talk about plastic products, practical color matching skills.

     First, set the program
    According to the plastic properties, molding process, the characteristics of the toner, color spelling principle, product requirements and other considerations, for a variety of colors mixed colors, and then achieve the desired color requirements. Any color, there is a certain hue, a certain degree of brightness, a certain degree of saturation, by changing these three factors can be called tens of thousands of colors. Therefore, the color, the master shades, color, color, the three skills is the most basic technique. The principle of toning is to adjust the shades of the first shade, because the depth of a change, the hue certainly changed.

    Second, according to customer requirements for the initial formula
    (1) the choice of pigments. Colorants are selected based on whether the sample is transparent, opaque or translucent.
    (2) coloring cost comprehensive consideration. Cost is also a very important consideration and the price of the pigment is as important as the performance of the pigment. .

    Third, tune shallow
    According to the target sample, observe the degree of penetration, hue shades to determine the proportion of black and white components, color color to determine the concentration of color toner or fluorescent powder containing the ratio. The coloring power of the toner available a variety of colors on the same plastic substrate to play board confirmation, such as the PP material by adding 20 grams, 50 grams, 100 grams, 300 grams and other colors in fact there are enough to grasp different degrees, At the same time to master each color pigment to join a certain percentage of titanium dioxide, the hue changes and concentration changes.
    Color process, to the depth direction, to clear the hue by hue is dark or dark, hue can only be added to the deep dark, dark can add black, of course, you can add a small amount of black to deepen the dark hue concentrated. To the shallow direction, according to the degree of solid color to determine the amount of titanium dioxide, if not solid color, you need to add titanium dioxide, while other colors should also be added in proportion, and then according to the depth of the hue with a variety of colored colorant Coloring power, the estimated proportion of color coloring agent content.

   Fourth, color phase
    In theory, most of the colors can be dispensed with the three primary colors of red, yellow and blue, but in fact, the colors of various colorants are not simple colors, but are between simple colors with colored light of a near color For example, the red toner has yellow light red and blue light, the blue toner has red light blue and green light blue, and the yellow toner has green light yellow and red light yellow. In the process of grading, pay attention to the complementarity of shades, such as tune bright green, you can directly use phthalocyanine green, such as adjusting the ratio of dark green to choose green blue and green yellow to fight color, and can not be complementary Red blue and green yellow to fight color.

    Fifth, poor color
    After shading and hue estimation, the basic formula can be determined, after playing the plate with the standard color, and then color correction. Color and shade, vividness, brightness, hue bias.
    First of all, to determine the color difference in which aspect, the depth of black, white powder to tune, bright vivid increase or decrease the amount of toner or add fluorescent toner, brighteners to adjust. Hue bias can increase or decrease the amount of toner or the use of complementary relationship to adjust, but be careful: make sure to use complementary colors will make the color dark.

    Sixth, how to determine the color formula?
    First determine the content of titanium dioxide, which is the key to the technology. Because of a change in the content of titanium dioxide, the color will change greatly, other toner dosage will change accordingly;
    Analysis of color tone sample range is composed of several colors, which is the main color, which is Vice color, the proportion is more. (Try to choose the color similar to the sample color pigment, such as red color, the sample is yellow on the choice of large red, bright red on the choice of bright red or fluorescent red as the main color); observe the sample brightness, consider whether to add fluorescence Toner or whitening agent added.