12 Causes of Yarn Dyeing Reproducibility Issues-2

Yarn Dyeing Reproducibility Issues


The five objective outside factors that affect the reproducibility of yarn dyeing have been listed before. The seven additional human-generated subjective elements and solutions are discussed below.

Subjective elements of yarn dyeing reproducibility issues

1、Winding quality

The apparent color depth of the cheese yarn’s dip-dyed color is greatly influenced by the weight ratio of the dye to the material being dyed. In most cases, package dyeing and loading just counts the quantity of bobbins; additional weighing is not necessary. The weight of the loaded yarn is thus determined by the weight of the winding. Therefore, the winding must weigh 100% of all loose packages.

2、Pretreatment

​The degree of impurity removal during pretreatment, the level of gross efficiency, the degree of whiteness, the pH after washing, and the hydrogen peroxide depuration following bleaching will all have an impact on the dye uptake rate and shade.

3、Selection of dyes

Reactive dyes, vat dyes, direct dyes, etc. are the most common types of dyes used on cotton yarn.
However, in some seasoned dyeing plants, reactive dyes are typically used for dyeing cotton yarn whereas disperse dyes and reactive dyes are used for dyeing blended polyester-cotton yarn. To ensure reproducibility, consider their compatibility, sensitivity, and quality stability while making your choice.

4、The rationality of dyeing process

​Despite the selection of the appropriate dyes, the dyeing process design is illogical, and the cylinder difference will also happen. For instance, the design of the temperature, the heating rate, the holding rate, the holding time, the amount of additives, the science-based nature of the adding techniques, and the logic of the post-treatment process design. They will all have an impact on the variation in the amount of dye uptake, which will produce a color difference.

5、Operational factors

​Operator and manager are unaware that their actions do not adhere to the standards of the process, and some are even incorrect. like:
  • The pipette is at roughly 45 degrees when the proofreader looks at the scale of the pipette (should be vertical).
  • The dyer is not a special person responsible for dyeing the same color, but multiple people operate.
  • Weighers use the same spoon to pick up different dyes, wiping only with a dry rag.
  • Each prescription’s dyes are assembled in a single container, weighed, and then put into a bucket.
You can find two other human subjective factors and solutions at https://fyitester.com/yarn-dyeing-reproducibility-issues-2/​.

Comments

Post a Comment

Popular posts from this blog

Combing Process in Spinning

Image
Before processing cotton, wool, and silk fibers into fabrics, the process of removing impurities and short fibers in the fibers with a combing machine is called combing. The texture, washability and durability of the fabric produced through this process are greatly improved compared with carded fabrics. The following introduces the composition of the combing machine and the combing process. The kinematic coordination relationship of the main parts on the combing machine is indicated by a dial. The disc is mounted on the combing machine and rotates synchronously with the cylinder, which is generally called the indexing disc. The index plate is divided into 40 equal parts along the circumference, and each equal part is 9°, which becomes one index. The working cycle refers to the time interval between the combing cylinder of the intermittent combing machine corresponding to the two actions of combing the whiskers. That is: the first row of needles in the combing cylinder goes to the botto
Read more

Twist Test Methods and Influencing Factors

Image
  Twist test is an important part of yarn inspection. It is related to the strength, elongation, appearance, style, etc. of yarns and fabrics. Different yarns have different structural characteristics, and their twist testing methods are also different. Basic concept To understand twist testing, you must first understand what twisting is. Twisting is a necessary condition for yarn formation. Short fibers can be made into yarns with certain physical and mechanical properties through twisting; filaments often need to be twisted in order to increase the tightness between single filaments, facilitate processing, and improve fabric properties. Number of twists Twisting is to cause two cross-sections of parallel straight fiber slivers to rotate relative to each other. The number of relative rotations of the two cross-sections is called the number of twists. Twist Twist refers to the number of twists per unit length of yarn . Twist coefficient In actual production, the twist coefficient is of
Read more

Garment Dyeing-Special Dyeing Method In Textile

Image
Garment dyeing is a relatively special dyeing process for textiles and garments. Many people may not know much about this dyeing process. In the impression of most people, textile and clothing products are dyed in the fabric period, and garment dyeing is a dyeing process that breaks people’s cognitive limitations on textile dyeing. ​What is garment dyeing ​Garment dyeing means that dyeing the one not in the fabric type but in the garment type itself. The garment type mentioned above include socks, towels, sportswear, shirts, plush toys (without fillers), T-shirts, pants, bathrobes, handkerchiefs, bath mats, carpets, scarves, etc. The material of these garments can be wool, linen, silk and cotton of natural fibers. But most garments are made of cotton or a cotton-rich blends. Garment dyeing imparts vibrant colors to garments. The clothes such as denim garments, tops, sportswear and casual clothing with garment dyeing can provide a distinctive special effect. Garment dyeing method Garmen
Read more