Color fastness is the most important target of good or bad quality of the ribbon, the primary attention is to the color fastness of conflict resistance, Perspiration resistance, washing resistance, light resistance, washing resistance.
In the production process, various kinds of exquisite ribbons usually need to go through multiple elastic belt processes. In this process, due to the errors caused by materials, production technology, operation and other reasons, the ribbon is usually different in different batches, and even in the same batch of cloth, there will be differences in color. The size of cloth color difference, if the color light source is not the same, the color environment, color time is not the same, the evaluation of color difference is also different. Therefore, in order to accurately evaluate the difference of colors and ensure the consistency of color matching results, it is necessary to select the light source designated by customers in the standard color matching light box to prevent visual difference caused by non-standard light source or different light source.
Color fastness is the most important target of good or bad quality of the ribbon, the primary attention is to the color fastness of conflict resistance, Perspiration resistance, washing resistance, light resistance, washing resistance. The first thing is to determine which items to check according to the use of the goods, and to tailor them according to the needs. The problem of decolorizing ribbon produced by ribbon factory can be large or small. If the ribbon used for clothing accessories is decolorized in water washing, it will pollute the whole dress or the clothes washed at the same time. Decolorized webbing can be a serious aversion.
The so-called color fastness refers to the degree of color fastness of dyed textiles under the physical and chemical effects, that is, the fastness of dyed textiles to external influences is called dyeing fastness. The color fastness is indicated by the color change of the sample after the experiment and the identification grade of the staining degree of the white cloth.
Among various items of color fastness, the most commonly used color fastness at present include color fastness to conflict, color fastness to perspiration, color fastness to washing, color fastness to light, color fastness to water immersion, color fastness to washing, color fastness to climate, etc. In real life, it is most important to determine which items to check according to the final use of the goods. Among them, the Perspiration resistance, dry friction resistance and color fastness to water immersion are the items required by the fundamental safety technical specifications of textiles, and all dyed textiles should be checked. In addition, about infant textile products, but also to check saliva color fastness.
The color fastness is usually determined by visual inspection, that is, the gray sample card is used as the standard sample. Under certain illumination and environmental conditions, the gray card is compared with the sample with human eyes to determine the color change of the original sample and the staining degree of the white cloth. Grey card (discoloration and staining) are five fastness grades, namely 5, 4, 3, 2 and 1. Grade 5 is the best and grade 1 is the worst. In every two grades, half of the grades are made up, namely 45, 34, 23 and 12. Therefore, our daily gray card is grade 5 and grade 9, and the result of color fastness identification is one of the nine grades. If the color fastness of a certain item of ribbon commodity fails to reach the grade of standard rules, then the ribbon commodity is unqualified.