In the textile industry, the fade color caused by the colour fastness of textiles has always been a difficult problem for textile enterprises and employees. Fade color or staining of textile will cause certain economic loss and reputation loss of textile enterprises.
Economic losses include: human, material and electrical equipment costs associated with the production of scrap and defective products; human and material costs associated with refurbishment and redoing; transportation costs for return and replenishment.
Brand reputation loss: because of the poor color fastness of textiles, the dye is easy to fall off and fade, which not only affects beauty, but also may endanger human health. This negative effect formed by the consumer market will reduce the popularity of the brand, affect the image and competitiveness of enterprises, and even determine the survival of enterprises.
Any textile enterprise, will face the above problem of color fastness, even the well-known brand is no exception. For example, in 2017, the international high-end brand ARMANI recalled some imports of ARMANI men’s wear, involving three series of EMPORIO ARMANI, ARMANI JEANS and GIORGIO ARMANI products due to three batches of color fastness.
Therefore, it is very important to establish the awareness of textile quality management and improve the quality of textile color fastness. So, how to improve the color fastness quality of textiles efficiently? The key here is efficiency, which means you get better results than others at the lowest possible cost.
Four Steps To Improve The Quality Of Color Fastness Of Textiles
1 Combined with our own situation, analyzes the current situation of color fastness and finds out the root cause of color fastness of textiles.
2 Work out the corresponding concrete plan to improve the color fastness according to the root cause.
3 Find the right tools or manpower to help solve the problem according to the solution of color fastness.
4 Abstract the whole process, establish the color fastness solution flow, improve and improve the quality of colour fastness.
As we know that the first step in solving any problem is to correctly analyze what causes these problems, otherwise, the wrong direction, no matter how many improvements may be a waste of time and energy, cannot solve the problem efficiently.
The key To Analysis The Color Fastness Of Textiles
Colorfastness of textiles refers to the degree of fading color of dyed fabric under the action of external factors in the process of use or processing. In the process of garments textile production, there are two main links that lead to color fastness problems: printing and dyeing & testing and evaluation.
1 If there is nothing wrong during the testing and evaluation, the evaluation results can truthfully reflect the color fastness grade of the fabric. At this time, we only need to start from the link of printing and dyeing. Find out the printing and dyeing process that meet the requirements of color fastness through color matching, and then gradually expand the production.
2 If there have some problems during the testing and evaluation link, there will be two situations, one is to evaluate the fabric that meets the requirements as not in accordance with the requirements, and the other is to evaluate the fabrics that do not meet the requirements as meeting the requirements. For the former case, it will inevitably lead to unnecessary color matching and waste of manpower and material resources; for the latter case, it will lead to the textiles that color fastness grade does not meet the requirements flow to the market, which will bring more serious losses to enterprises, such as rework, recall and so on.
It can be seen that the key to both cases is to test and evaluate the color fastness of the sample. Therefore, first we should ensure the accuracy of the test and evaluation, and then solve the process problems in the printing and dyeing process.
How To Ensure The Accuracy Of Color Fastness During The Testing And Evaluation?
There are many items in the color fastness test of textile materials. According to different external action forms, the common color fastness tests can be divided into colorfastness to crocking, color fastness to dry cleaning, color fastness to washing, colour fastness to perspiration, and color fastness to light and so on. In this paper, we take the testing of color fastness to crocking as an example, explain some key factors that affect the testing and evaluation of color fastness.
1. Before The Test, Clear Test Standards, Clear Customer Needs.
The common test standards of color fastness to crocking are ISO 105 X12, AATCC 8, AATCC 116, JIS L 0849, and so on. In order to avoid unnecessary errors, before testing, we should determine the test standards, clear customer requirements for color fastness to crocking, even some customers will specify the relevant environmental requirements, test methods, etc.
2. During The Testing, Test Error Of Color Fastness Instruments.
As long as it is the instruments, there will be more or less error, we should choose the instrument with small error, stable test results. Take colorfastness to crocking for example, here are three possible factors that may affect the error for the crockmeter.
2.1 The standard vertical pressure of the hammer and the smooth friction head, to ensure that the specimen is subjected to constant and uniform pressure.
2.2 Linear bearings and precision guide to ensure the stability of the sample stroke.
2.3 The specimen should be clamped firmly to avoid retesting.
3. At The End Of The Test, The Objectivity Of Color Fastness Evaluation.
This step requires that the evaluator has a wealth of evaluation experience and is able to objectively assess the color fastness grade, preferably by two different people.
Understand the key to the problem, and then textile enterprises should combine their own formulation of the corresponding solutions. Color fastness of textiles has always been one of the most difficult problems in textile industry. Only by having the ability to analyze problems objectively, can we find the key to solve the problem and improve the quality of textiles fundamentally.