The principle of color difference：
1.Naturally different colors Solid wood panels are made from natural trees, and different trees have different colors. Even the same tree can have different shades of color. Beauty and difference are the charm of nature.
2.Chroma and wood texture：
Different chromaticity and different wood textures will result in different absorption of paint, different coloring effects, and naturally color differences.
Acquired differences 01 Different paints Each time the paint is re-mixed, the color will be slightly different, and the number of times the paint is sprayed will also be different, and the surface paint color will also be different. This is also true for boards with decorative paper pressed on them, because during the production process of decorative paper, multiple batches of ink mixing will also cause color differences.
3.Environment：
In brightly lit places, colors appear brighter; in insufficiently lit places, colors appear darker; the colors you see are different under different light sources.
4.Angle：
From different angles, the reflected colors are different.
Decorative paper color difference control (rough theory)
- 1.Decorative paper is a kind of paper that is printed with wood grain, stone grain, bamboo grain and other patterns on decorative base paper, then impregnated with melamine and hot pressed onto high- and medium-density fiberboard together with wear-resistant paper to be made into floors, furniture, etc., for decorative and protective purposes.
- 2.The color difference of decorative paper (the color difference between products) is mainly caused during the printing process. Due to the large number of colors (usually 3-4 colors are overprinted), different patterns of each color, and the influence of many factors such as people, machines, materials, methods, environment, and measurement during the production process, it is difficult to control the color difference and there are many customer complaints. Therefore, color difference control is a topic that many decorative paper printing companies are competing to discuss.
The purpose of color difference control of decorative paper
To ensure the consistency of pattern and color within each batch of products or between batches. Its importance lies in meeting the requirements of final customers for product color, meeting the requirements of downstream customers for product interchangeability, and ensuring the consistency of products within the company and the protection of product patterns and colors.
Causes and control methods of color difference:
- 1. The skills of the personnel are mainly color matching operators (colorists) and printing operators (machine operators). Strengthen the theoretical learning and training of relevant personnel, and improve the skills of relevant personnel through a lot of practice.
- 2. The accuracy of the equipment printing press overprint, the stability of the scraper and the printing plate. Through the effective management of the equipment, the accuracy of the equipment is maintained and the service life of the equipment is improved.
- 3. The color difference of the base paper, the ink absorption of the base paper, the smoothness of the base paper, the color deviation of the ink, the stability of the ink during the printing process, etc. By strengthening the control of suppliers and the inspection of incoming raw materials. Try to ensure that the color difference of the base paper and the color deviation of the ink are minimized, and various physical and chemical performance indicators are as stable as possible.