Natural real stone paint has obvious advantages in terms of environmental protection, construction convenience, and color richness. Since natural colored sand is used as the main raw material, it is very difficult to keep the color of different batches of real stone paint completely consistent. However, if it is effectively controlled from the source, production and construction, the color difference problem of real stone paint can be solved to a large extent.
The following introduces you to five aspects of solving the color difference problem of real stone paint:
1. There are many difficulties in producing real stone paint with the same color between batches. At the same time, the natural color characteristics of natural colored sand also have strict requirements on the manufacturers of colored sand or their downstream real stone paint manufacturers. Some large colored sand manufacturers use mixing equipment for mixing according to the requirements of downstream production. This ensures the color consistency of larger batches of colored sand, but the supply cost of the corresponding colored sand will increase accordingly. Therefore The selection and control of colored sand and colored sand manufacturers has become the basis for controlling the color difference of real stone paint.
2. For the purchase of established real stone paint colored sand, production and R&D personnel are required to carry out color matching according to customer needs and existing colored sand types. Different from traditional paints, real stone paint is used for color matching. The irregularity of the shape and the unevenness of the coating film determine that the color cannot be corrected by professional Spectrophotometer computer color correction equipment, and can only be manually adjusted and corrected by relying on the experience of the color matching engineer. This has relatively strict requirements for color engineers, such as familiarity with raw materials, sensitivity to color experience, proficiency and precise grasp of real stone paint formulas.
3. The production of real stone paint is researched and developed according to the sample formula, then enlarged for production, and then modified according to customer needs. Raw material feeding in production should be done in a proper way. There is a principle of first shallow and then deep, first more and then less, from shallow to deep and easy, from deep to shallow and difficult. For colored sand with a small amount of addition and a darker color, the method of buckling and adding materials can often solve the number of repetitions of color correction to a large extent. At the same time, the addition and adjustment of various additives and the process control during the production are quite particular. The combination of precise process control and rich production experience is necessary for the production of real stone paint with good quality, small difference, and high degree of color matching with the incoming sample. condition.
4. The color difference of real stone is also closely related to the construction method and construction thickness. The same batch of real stone paint or the same bucket of real stone paint, the color of spraying and scraping will be slightly different. The real stone paint film sprayed has a strong texture, uniform dispersion, and relatively uniform color dispersion; while the effect of scraping is high in flatness, and it tends to collect large-sized sand particles inward, and fine sand is easy to float on the surface. mainstream color. Of course, this depends on the specific construction requirements and coating effects.
5. However, with the continuation of the use time, disadvantages such as weather resistance, stain resistance, color difference, and whitening gradually appear, especially the color difference caused by various reasons has become the most difficult problem in the application. There are differences, so the consistency of the technique should be kept as far as possible during construction, and the construction should be as uniform as possible. Try to use the same batch of real stone paint on the same wall. Due to the difficulty in implementing the detection method, the physical parameters of colored sand and color cannot be uniformly and effectively combed. There is no detection standard for the color difference of real stone paint in the national standard and related industry standards. This must be controlled by yourself. Take it easy.
