Cold pad-batch dyeing, as a semi-continuous dyeing method, realizes environmentally friendly dyeing of cotton knitted fabrics through processes such as semi-product pretreatment, pad dyeing solution, coiling, stacking, washing, soaping, washing and drying. 1. Pre-processing preparationThe cold pad-b
The development, quality improvement, and upgrade of certain varieties of cotton and its blended knitted fabrics require mercerizing treatment and reasonable selection of mercerizing methods. Now give an example for discussion. 1. It can improve the quality of knitwear Knitted outerwear fabrics such
Why is the wet fastness and rubbing fastness poor when the reactive dyes dye the dark color of cotton? How to deal with it?(1) Reasons for poor fastness. Unlike direct dyes dyeing cotton, neutral (or acid) dyes dyeing nylon, disperse dyes dyeing polyester, reactive dyes dyeing cotton are not combine
Cause： When the medium-temperature reactive turquoise blue is dip dyed, it is easy to produce color spots and stains, because the reactive turquoise blue has the defects of poor salt resistance and alkali solubility stability. The meso-temperature reactive turquoise blue has good salt dissolution st
The dyeing mechanism of reactive dyes on cellulose fibers is different from other dyes. As a result of dyeing, the dyes on the fibers are not physically dyed on the fibers by hydrogen bonds, ionic bonds or van der Waals forces, but in the form of covalent bonds. It is chemically combined with the fi
For dyeing with reactive dyes, the choice of the three primary colors of dyes must be paid attention to by dyeing workers. Among them, the ratio shift value (Rf) of the dye is a very important parameter. The Rf value represents the affinity of the dye. During dyeing, it determines the instantaneous
According to the latest report from the World Wide Web, India has set a new global record of new crown diagnoses for 4 consecutive days, with an average of 1 death every 4 minutes. If it is said that only using words like "hell on earth" to describe the current situation in India cannot give people
1. Choose reactive dyes with less floating color after dyeingFloating color is the main reason for the unqualified wet rubbing fastness of dark and dense fabric.The floating dyes of reactive dyes include dyes that have been adsorbed on the fibers without reacting with the fibers, partially hydrolyze
According to news from Observer.com on March 30, after the failure of forcibly slandering Xinjiang cotton, some people are eyeing the textile viscose fiber in Xinjiang. The current supplier of this material, Stora Enso in Finland, has been forced to stop producing related raw materials.Viscose fiber
There are repellents on the fabric, causing semi-repellent, or dripping water to dilute the dye solution during the dyeing process, and the fabric is stained with fleece;1) The fabric is impervious to scouring, and the dyed fabric contains dye-repellent substances;2) When the rough fabric is dyed, t