Since gloss is one of the important reference indicators for testing the quality of non-woven fabrics, the traditional manual visual observation method is difficult to accurately judge due to the influence of subjective factors. In order to quickly and accurately determine the gloss of non-woven fabrics, a customized Gloss meter can be used.
For the measurement of the glossiness of non-woven fabrics, two measurement methods of mirror gloss and contrast gloss are widely used at present. Specular gloss is to measure the ratio of the amount of specularly reflected light on the surface of an object to the amount of incident light. Contrast gloss is also called contrast gloss, which is the ratio of the amount of specular reflection of the object to the total reflection. It describes the degree of deviation of the surface of the object from the specular gloss, which is suitable for describing low-gloss surfaces.
The measurement principle is: a certain light source (usually D65 light source) illuminates the sample at a certain angle of incidence, and receives the specular reflection light quantity of the specimen at the same reflection angle as the incident angle. The specular reflection light quantity of the specimen is the same as under the same conditions The ratio (%) of the specular reflection light quantity of the standard gloss plate shows the result. But it should be noted that different types of non-woven fabrics have different surface gloss. Therefore, the corresponding measurement conditions should be selected, especially the angle of incident light and reflected light.
We usually use the measurement angle to name the gloss test method, such as 20°, 60°, 85°, 45°, 75°, etc. The conventional material will choose the general 60° angle. When the user writes the non-woven gloss measurement report, Need to indicate the instrument used and the angle of measurement.
To sum up, it is an introduction to the relevant knowledge about the customized gloss meter to measure the gloss of non-woven fabrics. You can learn more about it.