En los últimos años, debido a la gran cantidad de compuestos que contienen halógenos, como el freón, está varado sobre la tierra y se descompone por los rayos ultravioleta en halógeno activo. Read More
The structure of knitted fabrics is loose and easy to deform. During the printing production process, it is easy to lengthen in the warp direction and narrow in the weft direction. Fabric deformation will bring a series of problems in printing, resulting in weft skew. Wrinkles and printing defects i Read More
The so -called wet transfer printing is the method of printing the fabric in a wet state, which is determined by the dye dye performance in the dye transfer printing. This article mainly discusses the process of active dyes and acidic dyes for wet transfer printing. Because active dyes and acidic dy Read More
To overcome the problem of large shrinkage of cotton knitted fabrics, the following measures and methods can be taken in combination with the characteristics of knitted fabric printing in the state of slitting and open width: ⑴ loose processing. Minimize the tension of each process in the printing a Read More
Most of the gauze used in the color woven cotton dab, such as labor cloth and Yuan Gong, mostly use sulfur dye dyeing. The price of vulcanized dyes is cheap, the color of the dyeing is full, and the water washed is better. It is one of the commonly used dyes of yarn dye.Sulfur dye contains more sulf Read More
Vat dye is a major dye dyeing for dyeing of current color fabric cotton yarn. After dyeing, the yarn is not only bright in color, but also very good. Most of the daily exposure is above 6 or more, and some varieties are as high as 8. Therefore, all color woven fabrics such as cooking, bleaching, sil Read More
1. Reductive cleaning under alkaline conditions: Soaping agent + reducing agent (sulfur powder or thiourea dioxide) + alkali (caustic soda or soda ash), but many domestic dyeing factories do not use soaping agent. Soaping agent: non-ionic surfactant, which is beneficial to the dissolving and dispers Read More
1. TemperatureTemperature is an important factor in controlling uniform dye. When acrylic dyeing with cationic dyes, there is very little dye below 75 ° C. When the vitrification temperature (75-85 ° C) of the dyeing temperature reaches the fiber, the upper dye rate of the dye increases rapidly. The Read More
1. Overview of acid dyes1. History of acid dye:In 1868, the earliest acid -dye triophane acidic dye appeared, which has a strong dyeing ability but poor in accuracy. Read More
1. Since the molecular chain of spandex contains a large number of reactive groups such as amino groups, it is easy to turn yellow during high temperature setting or storage, which affects the quality of finished products, especially fluorescent whitening fabrics and light-colored fabrics. 2. In ord Read More
