Technique for promoting dye permeability and depth of active dye

Abstract

The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a technique for promoting dye permeability and depth of active dye. The dyeing processing flowis pretreatment fabric->dye padding->piling->first drying->padding with fixation fluid->gas steaming-> high temperature soaping->second drying-> post finishing; the piling temperature is 20-26 DEG C and the piling time is 4-10 hours. The method can increase the permeation time of the dye in the inner part of the fabric, avoid the problems that the continuous dyeing padding time is short and the dye is directly dried after dyeing and the dye is not easy to permeate to the inner part of fiber, avoid the problems of too early fixation of dye and fiber due to the mixing of the cold rolling dye andthe fixation fluid and the dye permeability effect of the active dye goes bad, and promote the permeability of dye; the dye can be fully dissolved and absorbed and spread to the fiber; the techniqueis good for the reaction of dye and fiber in the subsequent fixation, and able to improve the dyeing rate and the utilization rate of the dye; through contrast, the dyeing depth can be promoted by about 15%, and the dyeing cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and in particular relates to a process for improving the dyeing penetration and depth of reactive dyes. Background technique [0002] At present, there are mainly two methods for dyeing with reactive dyes, one is exhaust dyeing, and the other is pad dyeing. [0003] Exhaust dyeing is a dyeing method in which the fabric is immersed in the dye solution, and the dye is dyed on the fiber and fixed on the fiber after a certain period of time. During dip-dyeing, there are cases where the dye solution and the dyed object are circulated at the same time, such as overflow dyeing and jet dyeing; there are also cases where the dye solution does not circulate but the dyed object circulates, such as traditional rope dyeing machine dyeing; or the dye solution circulates but the dyed object does not circulate , such as warp axis dyeing. Exhaust dyeing belongs to intermittent production, an...

AI Technical Summary

Problems solved by technology

[0004] Pad dyeing is continuous dyeing, a dyeing method in which fabrics are dyed in a dye bath for a short period of time and then padded. This dyeing method has a greater tension on the dyed fabrics, and is usually used for large-scale dyeing processing of woven fabrics, and the labor productivity is relatively low. High, the contact time between the fabric and the dye solution in this way is very short, only a few seconds. After the dye solution is processed by padding, the dye solution is mainly deposited on the surface of the fiber and distributed in the capillary channels of the fiber. Except for adsorption on the surface, there is basically no dyeing process. After the color is fixed, the dye is mainly distributed in the core of the fiber, and the dyeing and penetration are poor. The collar and cuffs of the clothes are prone to whitening after repeated washing, which affects the quality of the product. quality