Latest News and Updates on Textile Auxiliaries and Dyes

Polyester is generally dyed with disperse dyes. Disperse dyes do not contain strong water-soluble groups and are dyed in a dispersed state during the dyeing process. A class of ionic dyes can be divided into three types according to dyeing temperature or sublimation fastness, S type, SE type , Type Read More

1. It is easier to dye nylon with disperse dyes using alkali agents to reduce the color, but the shade changes greatly, and the darkening is serious.2. For dyeing nylon with neutral dyes, soda ash treatment has almost no color reduction ability, and the shade changes, caustic soda has the color redu Read More

In the polyester dyeing process, the heating rate, the holding temperature and the pH value of the dyeing bath have a greater impact on the dyeing quality. Theoretically, under the condition of ensuring that the fabric does not appear colored, the shorter the dyeing process, the lower the dyeing cos Read More

①The definition of lifting power:Lifting power is one of the important properties of disperse dyes. This characteristic indicates that when each dye is used for dyeing or printing, the amount of dye is gradually increased, and the degree of color depth on the fabric (or yarn) increases accordingly. Read More

The thermal migration of disperse dyes is not the redistribution of dyes in the two phases of fiber and surface solvent under dry heat conditions, but its inherent physical characteristics, which also cause the color fastness and shade variation of polyester-containing fabrics to decrease during dry Read More

Disperse dyeing is mainly used for polyester fiber dyeing at high temperature and high pressure. Although the disperse dye molecules are small, it is not guaranteed that all the dye molecules enter the fiber during dyeing. Some disperse dyes will adhere to the fiber surface, resulting in poor fastne Read More

The influence of disperse dyeing The thermal migration of disperse dyes is not the redistribution of dyes in the two phases of fiber and surface solvent under dry heat conditions, but its inherent physical characteristics, which also cause the color fastness and shade variation of polyester-contain Read More

Thermal migration is a redistribution phenomenon of disperse dyes in two-phase solvents. Therefore, all additives that can dissolve disperse dyes can produce thermal migration.The reason for the thermal migration phenomenon is that the auxiliary agent in the outer layer of the fiber dissolves the dy Read More

Causes of scattered dyeing spots and spots There are two kinds of color spots and spots produced by the high temperature and high pressure dyeing machine when dyeing polyester knitted fabrics:1. The color spots and spots caused by the condensation of dyes can be repaired with a repair agent or strip Read More

In the past two or three years, due to the country's emphasis on environmental protection, the structural reform and environmental protection transformation of the dye industry have been promoted. This has caused many large manufacturers to suspend existing production capacity and small manufacturer Read More

1. Check the accuracy of the prepared dyes and chemicals according to the prescription list. When disperse dyes are used to make materials, generally use cold water to beat them and mix them evenly (stirring with a mixer for about 20-30 minutes), and then dilute them with warm water at 40～45°C befor Read More

Nylon 6 is a type of polymer material with characteristic structure amide bonds on the main chain of macromolecules, and its dyeing performance is similar to wool. It has excellent strength, abrasion resistance, soft hand feeling, light texture and other good wearing properties, and it occupies an i Read More