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Problems associated with color

Category:Industry News Publish:2013-3-21 11:40:43 Browse:2972 [Back]
And the color of the problem
1 on the color
The samples with guest template
Material and batch number: reflection light
Different organization form, density
Dyeing process: difference method, dye
The dyed goods and confirmed sample
Lateral chromatic aberration between strip and strip
Each between longitudinal chromatic aberration
Differences between machine and conditions
The dyed the color difference between batches
2 on the color fastness
Color fastness is one of important quality index of textiles. The color fastness of dyed textiles is refers to the physical and chemical effects, color to maintain fast degree, namely the dyeing textile color by outside influence degree of fastness called dyeing fastness. To the color change of specimen after test, grade white staining indicates the degree of color fastness is good or bad.
The color fastness of various projects, the most commonly used color fastness rubbing fastness, perspiration fastness, washing fastness, light fastness, color fastness to water, washing fastness, weather fastness and other projects. In real life, mainly to decide which projects according to the assessment of the product end-use, the perspiration, dry friction resistance, color fastness to water is the basic requirements for safety technical specification for textile items, all dyed textile should check. In addition, the infant textile products will assess colour fastness to saliva.
Evaluation of color fastness by visual assessment method, which is based on grey card as standard sample, in a certain light and environmental conditions, with people of vision contrast gray card and sample, to determine the sample original color and white staining series. The gray card (respectively, discoloration and color staining fastness rating) for five, 5, 4, 3, 2, 1. Level 5, level 1 is the worst. In each of the two levels of added half level, namely 45, 34, 23, 12, so the gray card we daily use for 5 of 9 stalls, dyeing fastness rating results to one of 9 levels. If a color ribbon products not up to standard level, so not qualified for ribbon products.
Ribbon below the ribbon must satisfy:
1 color fastness to washing of level 3.5 or above, through the ISO105-C01:1989 testing standards
2 rubbing fastness of grade 3.5 or above, through the ISO105-X12:1993 testing standards
3 the light fastness of grade 4 or above, through the ISO105-B02:1994 testing standards
3 on the color light source
Textiles are through several processes in the production process, in this process, because the error caused by raw materials, production process, operating a variety of reasons, often in different batches, or even the same batch of fabric will have differences in color. Fabric color difference in size, if the color light of different color to color, environment, time, evaluation of the color is different. Therefore, in order to accurately assess the color difference, guarantee the consistency of color results, in the visual assessment of color, must be in the standard to select light source customers specified light color to color, in order to avoid the visual differences due to the light source is not standard or light with different.
The 4 color light source classification
The international standard of artificial natural day light source, color temperature of 6500K.
Cool white fluorescent light, 4150K, the United States of America store, on the color light American businessmen frequently use.
Cool white, color temperature of 4000K, the European, Japanese merchants used to color light source.
Huang Guangyuan, light and reference light, suitable for instead of the light source in the home or hotel room under the observation of color.
Ultraviolet light, wavelength 365nm, used for the detection of fabric on the whitening agent or fluorescent dyes
U30 (TL83):
Warm white light, color temperature of 3000K, another American commercial source
Ribbon: clothing, shoes and hats, the application field of luggage, handbags, toys, handicrafts, sports goods, automotive, medical equipment etc.
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