Semi-color weaving and dyeing process of silk and cotton interwoven jacquard fabric

Abstract

The invention provides a semi-color weaving and dyeing process of a silk and cotton interwoven jacquard fabric and belongs to the technical field of silk and cotton interwoven fabric dyeing. The semi-color weaving and dyeing process is characterized by the process steps that cotton fiber cone yarns are dyed, wherein starting is performed for operation, 0.5%owf-5%wf of mixed dual-active-group reactive dyes containing monochlorotriazine and vinylsulfsulfate in an axillary cylinder is firstly dissolved with water and fully stirred, and an additive is added; then, heating and mixing are performed; fixation, cold water washing, acid pickling, soaping, hot water washing and cold water washing are performed, then the mixture is taken out of the cylinder, and centrifugal dewatering and drying are performed; cotton fiber and raw silk are woven; warp silk dyeing is performed. 2.7-3.4 g / L of neutralization acid is added to cold water after washing, the operation is executed for three times, and down rolling is performed. The alkaline agent usage amount is decreased, and it is ensured that the strength in silk fiber dyeing process is not affected. Dyes in the dyeing process only produce covalence reaction with real silk and do not produce reaction with cotton yarns and fiber, the real silk can be dyed with any color, cotton fiber is almost not affected, and the silk and cotton interwoven jacquard fabric can be dyed to have any color in a color atlas.

Description

technical field [0001] The invention relates to a silk-cotton interwoven jacquard fabric half-dyed dyeing process, which belongs to the technical field of silk-cotton interwoven fabric dyeing. Background technique [0002] Silk fiber has been known as the "fiber queen" since ancient times. It belongs to protein fiber and contains 18 kinds of amino acids necessary for the human body. nice feature. Silk-cotton blended fabric integrates the excellent properties of silk fiber and cotton fiber. It is luxurious, soft, moisture-absorbing and warm-keeping. It is widely used in the production of modern high-end home quilt covers, pillowcases, bed sheets and other bedding sets, and is favored by high-end consumer groups in the market. . [0003] At present, silk-cotton interwoven jacquard fabrics are mostly produced by the two-bath two-step method of reactive / reactive dyes and reactive / neutral dyes. First, Yongguang H-type bis-chloro-s-triazine-based reactive dyes are used at 80°C, ...

AI Technical Summary

Problems solved by technology

After the dyeing time, how long the dye concentration owf% reaches, the silk fiber participates in the reaction, no matter in terms of technical means or process operation, it is difficult to control in the factory production

As a result, the cotton fiber dyeing color is unstable during the mass production process, and the material is replenished on the car bed many times, the production cost increases and the efficiency decreases

And under the dyeing conditions of 80°C, 50g / L sodium sulfate, and 10g / L sodium carbonate, the pH is as high as 11. If the machine runs for a long time, the silk fiber will be damaged and the strength will decrease.

[0005] 2. The color fastness to rubbing of silk-cotton interwoven jacquard fabrics by two-bath two-step dyeing process is poor

The reason is that during the dyeing process, due to the difference in the properties of silk and cotton fibers, cotton fibers need to be dyed under alkaline conditions, while real silk fibers are not alkali-resistant. In order to reduce the damage of real silk fibers, when dyeing cotton fibers, proper Control and reduce the amount of alkali, resulting in a decrease in the reactivity of reactive dyes and cotton fibers, affecting color absorption and color fastness

[0006] 3. There is a problem of "staining" on silk fibers when the two-bath two-step method is used to "dye the base color". To make the silk-cotton jacquard fabric show a two-color effect after two-bath and two-step dyeing, the color spectrum is limited. Can "shallow cotton and deep silk", but can't achieve the effect of "deep cotton and light silk"

Because Yongguang HE-type bis-chloro-s-triazine-based reactive dyes, when dyeing the base color, the dyes mainly react with the color-absorbing groups on the cotton fibers. The chromatogram is not affected when the fiber is dyed; when the cotton fiber is dyed in a darker color, while the dye reacts with the cotton fiber, a small amount of silk fiber color-absorbing groups will also participate in the reaction, and the silk fiber is "stained". The color spectrum is limited, and silk fibers cannot be dyed in light colors, which restricts market demand