What should I do if the color fastness fails?
We often mistakenly think that expensive clothes should be taken to dry cleaning, thinking that clothes dry cleaning is the safest, will not be deformed wash bad, more will not lose color.
But the inspector tells you: no! Dry cleaning may also appear clothing decorations are corroded, fabric fading and so on!
In the daily sampling and consumer complaints, the most common textile color fastness problems are as follows.
1. Fastness to rubbing color fastness is not qualified. Textiles in the process of use, because different parts of the product are subject to different degrees of friction, the degree of color loss is different. For example, the elbow of the top and sleeves, the collar and armpits are the easiest to lose color. In addition, the hip and knee parts of the pants are also easy to lose color.
Fastness to friction color fastness testing equipment: dry / wet friction color fastness tester is used to test the dyeing fabric in the dry / wet state, by friction under the action of the decolorization performance.
Principle: make the specimen in a certain pressure, a certain number of trips and white cotton repeatedly rubbing the specified number of times, after the white cotton and dyeing fastness stained gray sample card comparison to assess the level of decolorization, to provide a basis for improving fabric dyeing.
2. Washing fastness, soap fastness and dry cleaning fastness failed. Senior silk garments, wool garments, cotton garments are most likely to have problems in this regard.
Washing color fastness testing equipment: stainless steel washing color fastness tester is used to measure the effect of washing on the color fastness of colored textiles, not only can test the color fastness of washing but also dry cleaning color fastness test.
Principle: The specimen is sewn together with the standard lining fabric, washed at a certain temperature and detergent conditions, the specimen is finished by stirring with detergent and stainless steel beads, then washed and dried, and then the discoloration of the specimen and the staining of the lining fabric are evaluated by the discoloration, staining gray card.
3. Sunlight fastness failed. Jacket clothing in the wearing process, sunlight exposure of more parts of the color lightening or discoloration (generally the back and shoulder parts), while the irradiation or less irradiation where the color remains unchanged or change light, resulting in the original color consistency of the product color shades, can no longer continue to use.
Sunlight color fastness testing equipment: Use: Applicable to textiles, paints, dyes, coatings, rubber, plastics, wood flooring and paper and other materials of light fastness, weather fastness, light sweat compound color fastness test and light aging test.
4. color fastness to sweat stains, saliva color fastness failed. Mainly summer clothes or intimate underwear in the wear, by the impregnation of sweat and color loss.
Sweat stain color fastness testing equipment: sweat stain color fastness tester, can determine the color fastness of textiles to water and sweat stain resistance. The instrument provides 1 stainless steel sample holder, which can hold 20 specimens of 10cm x 4cm. The specimens are separated by acrylonitrile dividers. This instrument also provides BS, ISO and AATCC standard press weights, which require the use of a high precision oven.
There are many factors for textile dyeing fastness, for the intrinsic factors, it is the production processes are done properly to ensure that the product can have excellent color fastness index to meet the requirements of daily use and reprocessing; for the extrinsic factors, it is necessary to pay attention to the washing temperature, detergent and washing method as well as rubbing strength, exposure time and other factors that can reduce the color fastness according to the requirements of product use (this point requires garment manufacturers in the product before the product label to indicate). This will enable the product to be used in a better way.
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