How to check the color fastness of jacquard belt?

How to check the color fastness of jacquard belt?
Many times I have mentioned the high strength of the color fastness of the webbing in the specific description of the product. Here, I will briefly introduce the professional knowledge of color fastness of the webbing.
Color fastness is one of the primary quality indicators of webbing. The so-called color fastness of elastic band refers to the degree to which the color of the dyed webbing adheres to the physical and chemical action, that is, the fastness of the color of the dyed webbing to external influences is called the color fastness. After the test, the color of the sample changes, and the appraisal level of the white cloth staining degree indicates the color fastness.
Among the various items of color fastness of webbing, the most commonly used color fastnesses include rubbing fastness, perspiration fastness, shampoo lamp belt color fastness, light fastness, water immersion color fastness, Items such as color fastness to scrubbing and color fastness to weather. In real life, the first thing to do is to decide which items to check based on the ultimate usefulness of the product. During the process, resistance to perspiration, resistance to dry friction, and color fastness to water are the items required by the basic safety technical specifications of the webbing. All dyed webbing should be checked.