[Film Properties and Measurements] - Color determination of film

The general method for determining the color of the coating film is to make the sample and the standard at the same time according to the provisions of "GB9761-88 Visual Color Comparison of Paints and Varnishes". After construction and drying under the same conditions, it is visually inspected under natural scattered light. If there is no significant difference between the color of the sample and the standard sample, it is considered to meet the technical tolerance range. It is also possible to compare the sample with the standard Color Chart after making the plate, or compare it under artificial sunlight in the colorimetric box CIE Standard D65 to suit the needs of users. 

In addition, in order to avoid the generation of human errors, the national standard "GB11186.1.2-89 Measurement Method of Paint Film Color" stipulates that the method of measuring the color of the coating film with a Spectrophotometer , a filter Spectrophotometer and a stimulus value Colorimeter is commonly known as a photoelectric Colorimeter. Quantitative determination of color to express people's perception of color digitally.