How to describe the color fastness of webbing? The color fastness test standard of webbing,
color fastness is one of the important indicatorsof webbing quality of webbing manufacturers,
and color fastness is an indicator of the quality of webbing. The problem of decolorizing
webbing produced by webbing manufacturers can be large or small.
When the webbing of clothing accessories is decolored during washing, it will contaminate
the whole clothes or the clothes that are washed together. So how to evaluate the color fastness of webbing?
The color fastness is generally evaluated by visual evaluation method, that is,
the gray sample card is used as the standard sample. Under certain light and environmental conditions,
the gray card and the sample are compared with human eyes to determine the original sample discoloration
and white cloth staining level number. Gray card (respectively discoloration and staining) has five
fastness grades, namely 5,4, 3, 2, 1.5. Grade 5 is the best and Grade 1 is the worst. In every two grades,
one half grade is added, that is, 4 5, 3 4, 2 3, 12, so the gray card we use daily is 5 grades and 9 grades,
and the color fastness evaluation result is one of 9 grades. If the color fastness of a webbing product does
not reach the level specified by the standard, the webbing product is unqualified.
Among the various items of color fastness, the most commonly used color fastnesses are rubbing fastness,
perspiration fastness, washing fastness, light fastness, water immersion fastness, and scrubbing fastness.
Items such as color fastness, weather resistance, etc. In real life, the items to be evaluated are mainly
determined according to the final use of the product. Among them, the color fastness to perspiration,
dry friction, and water immersion are the items required by the basic safety technical specifications of textiles.
All dyed textiles should be evaluated.