6 teach you to solve the problem of plastic color

Introduction: Plastic color matching is the key to coloring plastics. Only with good color can we produce products that are excellent in color. Xiao Bian teaches you six strokes here, come and watch it!

1. Clearly color matching

A clear and comprehensive understanding of the samples to be deployed. According to plastic raw materials, soft and hard plastic toners are distinguished. This will reduce the range of toner. According to the molding process to choose toner or masterbatch (such as: medium temperature toner or high temperature). There are no special requirements for weather resistance, chemical stability plus filler or other additives, environmental protection, etc. Under what light source color, whether there is a requirement. Because of the sample, the colors will be different under different light sources such as natural light, fluorescent light, and ultraviolet light.

2. Analysis of hue

Coloring should follow the principle: first adjust the depth, and then color phase, the final micro-pitch; shade can be used black and white powder and the toner's own shade and saturation to deploy. Observe the transparency of the sample; observe the surface of the sample. If the sample is transparent, you need to choose organic pigments or dyes with good transparency. If it is opaque or semi-transparent, it is necessary to judge the content of titanium dioxide in the sample according to actual experience, and then determine whether or not to add the black extreme proportion according to the hue.

3. How to determine the color formula

First, determine the content of titanium dioxide, which is the key to the technology; secondly, analyze the color tonal range of the color matching sample by which colors, which is the main color, which is the secondary color, and the proportion of each is; For the vividness of the sample, consider whether to add fluorescent toner or brightener.

4. Test match

According to the previous analysis, choose the right toner, structure formula; according to the type of raw materials to choose soft or hard plastic, is resistant to medium temperature or high temperature toner; according to the transparency of the choice of pigment, determine the content of titanium dioxide and black, gray level, Finally determine the hue, shade, and brightness to choose the type of toner.

5. Formulation of color

Determine the proportion of titanium dioxide; Determine the proportion of black toner; Determine the proportion of the main color toner; Determine the proportion of the secondary color toner (requires the ratio of fluorescent toner or brightener).

6. Injection proofing / fine-tuning

Generally, 600g of resin is used for blending. According to the proportion of the formula, the toner and the resin are mixed evenly, and then the injection molding machine is used to make the plate. After playing the plate, the sample is completely cooled and compared with the color of the sample. The amount of toner is added or subtracted according to the hue, depth, and vividness of the color of the sample, and the test is repeated until the expected color matching is met. (