Date:2019/6/6 16:25:58 Number of visits:
Color fastness is the quality of the webbing is the most important indicator of good or bad, the main concern is the color fastness of the friction resistance, sweat stain resistance, water resistance, light resistance, scrub resistance. Mainly according to the use of products to determine the assessment of those items, according to the requirements of special requirements. The problem of decolorized webbing produced by the webbing factory can be large or small. If the webbing used for clothing accessories decolorizes in water, the whole garment or the clothes washed together will be contaminated. Decolorized ribbons can be very offensive.
The so-called color fastness refers to the degree to which the color of dyed textiles remains firm under the physical and chemical effects, that is, the degree to which the color of dyed textiles is affected by the outside world is called the dyeing fastness. The color fastness of the white cloth is indicated by the color change of the sample after the test and the grading of the degree of color stain on the white cloth.
Color fastness in a variety of projects, the most commonly used color fastness is the friction fastness, sweat stain fastness, washing fastness, light fastness, water immersion fastness, scrub fastness, climate fastness and other projects. In real life, mainly according to the final use of products to determine the assessment of which items, including sweat stain resistance, dry abrasion resistance, water immersion color fastness is the basic safety technical specifications for textiles requirements of the project, all dyed textiles should be assessed. In addition, for infant textile products to test the color fastness to saliva.
The evaluation of color fastness generally adopts the visual evaluation method, that is to take the gray sample card as the standard sample, under certain lighting and environmental conditions, the eye of the human being compares the gray card and the sample, in order to determine the original sample discoloration and white cloth stained series. Grey card (discoloration and discoloration respectively) has five fastness grades, namely 5, 4, 3, 2 and 1. Level 5 is the best and level 1 is the worst. In each of the two levels to add a half level, that is, 4, 5, 3, 4, 2, 3, 1, 2, so our daily use of grey card for grade 5 and grade 9, dyeing fastness assessment results for one of the nine levels. If the color fastness of a webbing product does not meet the standard level, then the ribbon product is unqualified.
