Problems that should be paid attention to in PU pigment coloring

1. The selection of PU pigments should be as few as possible.

Plastic color matching should use as few PU pigments as possible, that is, if you can use two colors to solve the problem, you should never use three colors. Because there are too many varieties to choose, it is not only troublesome to match colors, but also easy to bring in complementary colors to make the color dark. In addition, the more varieties are selected, the different factors such as dispersibility and tinting strength of each variety will increase the systematic error caused by color matching samples and production.

2. Pay attention to the shade of PU pigment.

PU pigments have different shades, such as: turquoise blue is green, original blue is red, lemon yellow is green, and original yellow is red. Therefore, the combination of turquoise blue and lemon yellow can produce bright green, while the color of original blue and original yellow will be dark.

3. Select PU pigments with different tinting strength.

When configuring dark colors, organic pigments with high tinting strength should be used, while when configuring light colors, inorganic pigments with low tinting strength should be used.