There are a variety of dyeing methods for nylon yarn, and the specific method chosen depends on the desired dyeing effect, the type of dye and the characteristics of the fiber.
1, pretreatment: before dyeing, nylon yarn needs to be pre-treated to remove dirt and residue to ensure uniform dyeing effect. Pre-treatment usually includes steps such as cleaning and bleaching.
2, immersion dyeing method: This is a common dyeing method, the nylon yarn is completely soaked in the dye solution, by controlling the dyeing time, temperature and dye concentration to achieve the ideal dyeing effect.
3, immersion dyeing method is suitable for various types of dyes, including acid dyes, metal complex dyes, disperse dyes, reactive dyes, direct dyes, neutral dyes and Sheline dyes.
4, jet dyeing method: In this method, the dye is sprayed to the nylon yarn through the nozzle, so that the dye can be more evenly distributed on the fiber surface. Jet dyeing method has the advantages of fast dyeing speed, high dye utilization rate, good color fastness, etc. It is especially suitable for mass production.
5, warp dyeing method: This dyeing method is suitable for longer nylon yarn, by winding the yarn on the warp. This method can ensure that the yarn can keep a certain tension during the dyeing process, so as to avoid the phenomenon of uneven dyeing caused by uneven tension.
