Plastic coloring is to use the subtractive mixing of dyes and pigments to make the products colored, that is, to obtain different colors by changing the absorption and reflection of light.
The types of plastic colorants can be divided into four types according to their physical form: powdered colorant - toner; Paste colorant - color paste; Liquid colorant - color oil; Solid colorant - Color Masterbatch.
Among them, powdered colorants and solid colorants are widely used. Let's first look at how the CHNSpec colorimeter measures the color of toner and color masterbatch.
Toner
Toner coloring: good dispersion, low cost, small batch operation. The quality can be arbitrarily specified according to the needs, and the preparation is convenient.
Measure the color of toner with CHNSpec color difference instrument. In order to ensure the accuracy of the measurement data, first press the toner into color cake with a powder former, and then measure the data with a colorimeter.

First, use a powder former to press the powder into a cake

After that, accurate data can be measured directly by CHNSpec colorimeter.
Color Masterbatch
Color Masterbatch coloring: the color masterbatch is fully combined with the carrier resin after full mixing. When in use, it can color quickly, change color easily in the process of use, and the cleaning of extruder hopper is also very convenient.
CHNSpec measurement of color masterbatch is generally to install the color masterbatch with a cuvette and then measure it with a colorimeter.

Use the CHNSpec colorimeter to measure several times to obtain the average value, and the data is more accurate.
The coloring of plastic products not only uses colorants, but also needs color matching.