Reflectivity of Reflective Fabirc

Reflective materials, also known as retroreflective materials, regression reflective materials. Reflective fabric tape is one of the reflective materials. The reflective performance of the reflective fabric is due to its surface covered with dense glass beads, which can reflect light from a distance back to the glow. Therefore, when security field workers wear clothes sewn with reflective fabric, people in the luminous area can see the reflective light reflected back by the reflective fabric. So, how to judge the reflective ability of a reflective fabric effect? -- Reflectivity.

What is the reflectivity?

 Reflectivity is an important index to measure the reflective ability of an object, which represents the ratio of the luminous flux reflected per unit area to the incident luminous flux in the direction of the object against the incident light. The magnitude of the reflectivity is related to the surface material, structure of the object and the Angle and wavelength of the incident light. In general, the higher the reflectivity of an object, the stronger its reflective ability. In practical applications, the reflectivity can be used to assess an object's ability to reflect light, thus assessing its visibility and safety in a specific environment. In the field of road safety, the reflectivity of reflective fabric is an important index to measure its visibility and safety. The higher the reflectivity of the reflective fabric, the better its visibility at night or in bad weather, which can improve the safety of the author. Well,

How to accurately measure the reflectivity of a reflective fabric?

RoadVista 932 is a reflectivity tester developed by American RoadVista, which is widely used in the world. It is suitable for measuring the reflectivity of reflective signs, highway traffic sign boards at all levels and high visibility warning clothing, and can also be used for product quality control of reflective materials in manufacturing, and is the best choice for testing the reflectivity.

The international common unit for the measurement of the reflectivity is cd/ (lx·m2), which indicates the brightness value generated by the reflective material under certain geometric conditions, under unit light, and per unit area of the reflective material. Therefore, the reflectivity measuring instrument should be calibrated with the measured standard reflectivity plate before measurement. By adjusting the incident Angle and observation Angle of the reflectivity measuring instrument to the specified conditions, different parts of the sample are placed under the measuring hole of the instrument in order to measure, and than record reflectivity value, accurate to 0.1cd (lx·m2).