Active color fixing agent manufacturer: The printing and dyeing factory selects dyes based on the fastness performance provided by the dye color card and sample testing to determine the wet treatment fastness level of the dyes. Because the color fastness provided on the color card is for deep dyeing at a dye concentration of 1/1, it can only be used as a reference, with the latter being the main focus.
Therefore, it is necessary to optimize the dyes for deep dyeing and strong dyeing products, and choose reactive dyes with good fastness, high fixation rate, and good dye penetration.
Technical considerations:
1. Strengthen the quality control of pre-treatment. pre-treatment mainly includes processes such as desizing, singeing, scouring and bleaching, and mercerization. The quality of each process control directly affects the dyeing quality and color fastness.
(1) Desizing and desizing must fully remove the pulp inside the fibers. Unclear desizing can affect the levelness and permeability of dyeing, hinder the diffusion of dyes inside the fibers, and cause the dyes to float on the surface of the fibers, affecting color fastness.
(2) Singing should be clean and tidy. Unclean singeing can directly affect the smoothness and smoothness of the fiber surface, increase the friction coefficient, generate certain resistance, and reduce friction fastness.
The better the wool effect, the better the permeability and levelness of dyeing, the higher the dyeing rate and fixation rate, the darker the color, the less floating color of the dye on the surface, and the better the friction and washing fastness. This can not only save the cost of dyeing materials, but also improve the dyeing fastness.
2. Active color fixing agent manufacturer: Different dyeing methods have different color depths, uniform dyeing, and effective dyeing and fixation. Below, we will analyze and discuss several different dyeing methods using active color fixing agents.
(1) Dip dyeing method: The fabric can have sufficient time to react with the dye at a certain temperature. By adsorption diffusion dyeing, the dye and fibers are fully dyed, with complete dyeing, high fixation rate, high brightness, and high color fastness.
(2) Cold rolling batch cold rolling batch dyeing is the process of dyeing fabrics at room temperature using pad dyeing solution and alkaline solution, rotating slowly for a long time, stacking at room temperature, then unwinding, washing with water, and soap washing to achieve full dyeing. This method is an excellent method for energy conservation, environmental protection, and small batch production. This method allows dyes and fibers to be fully absorbed, react for a long time, and have good dye uptake, fixation rate, levelness, and permeability, thereby obtaining good color fastness.
(3) Wet short steaming dyeing is an energy-saving dyeing method. After soaking the dyeing solution, the fabric is directly steamed and fixed under high temperature and high humidity conditions to achieve rapid dyeing and fixation. It has good dyeing rate and permeability, high color yield, bright color, and can achieve good washing and rubbing fastness.