Latest News and Updates on Textile Auxiliaries and Dyes

1.1 Fixed-length titer unitDenier (D): Refers to the weight in grams of a 9000-meter-long fiber or yarn at a given moisture regain. For example: 1500D polyester raw silk means that the raw silk is measured 9000 meters, and its weight is 1500 grams. Others follow and so on.Special number (tex): also Read More

1) Twisting length of the bobbin: the length of the fiber or yarn wound on the bobbin after twisting. 2) Wool: The cord is fluffed due to yarn abrasion or raw silk. 3) Oil stained yarn: Yarn contaminated by oil. 4) Wrong denier silk: The same kind of raw silk in production, different deniers are not Read More

Los tejidos de punto son fáciles de estirar y deformar, fáciles de arrugar, fáciles de rizar, y el tamaño y la forma no son fáciles de estabilizar, etc., lo que requiere teñido y acabado, especialmente pretratamiento (también conocido como descrudado y blanqueado) y teñido. procedimientos. El tamaño de la tensión y la presión, es decir, cuanto mayor sea el grado de relajación de la tela, mejor. Read More

Los tejidos de nylon/algodón suelen teñirse mediante un sobreteñido en dos baños, es decir, teñir el nylon con tintes neutros, ácidos o dispersos y, a continuación, teñir el algodón con tintes reactivos a temperatura media. Para el teñido se utiliza el método de sobreteñido de dos baños. La ventaja es que el color (tono, tonalidad) de las fibras de nylon y algodón pueden compensarse entre sí durante el proceso de sobreteñido, y el color de la superficie de la tela es más fácil de ajustar y controlar; la desventaja es que el proceso lleva mucho tiempo, el rendimiento del procesamiento es bajo y el alto consumo de energía, la alta descarga de aguas residuales y los beneficios económicos deficientes. Read More

AB yarn is a thread that is spun by mixing two different raw materials. Now it is generally called siro yarn, which is a yarn made by siro spinning technicians. Because there are two rovings, it is sometimes called AB yarn.(1) The simultaneous twisting of siro spinning makes the yarn have a special Read More

1. Dyeing spandex with disperse dyes, the optimum process conditions are: temperature 125℃, time 30～40min, pH value 5～6.2. The dyeing temperature should be controlled within the range of 120 to 130 °C. When the temperature is less than 120 °C, the color fastness is not enough, and it is easy to deco Read More

1. Метод окисления(1) Мойка и вентиляцияКак правило, те, у которых быстрая скорость окисления, нужно только промывать водой и проветривать, например, сульфидные элементы. Когда эти красители окрашиваются, если красители подвергаются воздействию воздуха или количества сульфида натрия недостаточно, ле Read More

01 ОбзорВо-первых, определение сернистых красителей.Сернистые красители представляют собой класс серосодержащих красителей, которые получают из ароматических аминов или фенольных соединений в качестве сырья и сплавляют с полисульфидом натрия или серой.2. Особенности1. Сернистые красители нерастворим Read More

1 Choose the right dyeThe color fastness is closely related to the structure of the dye, and the selection of the dye should consider:① Strong reactivity between dyes and fibers;②High fixation rate;③It has better acid-base stability;④ The bond energy of the covalent bond of the dye-fiber is high, th Read More

Advantages of reactive dyes① Covalent bond between reactive dyes and fibers, in general, this bond will not dissociate, so once reactive dyes are dyed on fibers, they have good color fastness, especially wet fastness .②Brightness of color and brightness are particularly good;③ The cost is lower than Read More

The solubility of reactive dyes can be roughly divided into four categories:Class A, dyes containing diethylsulfone sulfate (ie vinylsulfone) and three reactive groups (monochloro-s-triazine + divinylsulfone) have the highest solubility, such as Yuanqing B, Tibetan blue GG, Tibetan blue RGB, golden Read More

Reactive dyes have a very good dissolution state in water. Reactive dyes mainly rely on the sulfonic acid group on the dye molecule to dissolve in water. -Ethylsulfonyl sulfate is also a very good solubilizing group.In the aqueous solution, the sodium ion on the sulfonic acid group and the -ethylsul Read More