Color masterbatch as a mixture of high concentration of color, its color ratio is very critical, if the color matching step is wrong and affect the color matching ratio, etc., then it will directly lead to the later color of the product is very inferior, and even uneven, dark color, light phenomenon. Therefore, when performing color matching operations, you must pay more attention to the following matters to improve the color quality of the product.
(1) The basic characteristics of coloring plastics must first understand the color of the coloring plastics themselves. Because sometimes the same variety, due to manufacturers, different brands or other reasons, often have yellowing phenomenon, color matching, to be eliminated. In addition, there are often additives in plastics, such as ultraviolet absorbers, antioxidants, etc., which will also react to the color masterbatch and discolor the product.
(2) The performance of the product The processing temperature of various plastics is different, so pay attention to its heat resistance when choosing, otherwise the pigment will decompose and change color at high temperature.
(3) The use condition table is the situation of commonly used plastics in preparation and molding and the requirements for color masterbatches.
(4) Color matching design steps
(1) Find reference colorants From the colored plastic samples (templates) with known proportions, find samples of similar colors as reference objects.
(2) Formulate the test formula, carefully compare the similarities and differences in color, color and light between the reference object and the color matching sample, and use the reference object to draw up the color trial match roughly contained in the color matching sample.
(3) The color matching test is matched according to the proposed formula until the registration.
