Mongolia | Dyeing of polyvinyl chloride wigs

According to market requirements and customer requirements, PVC fibers are often dyed black before being made into wigs. Because fiber factory has black raw silk supply rarely, and the market is bigger to black wig demand, make hair factory often buy from chemical fiber factory different color, different depth of the original silk changes dye black. Also because of the strong covering of black, different batches, different color number of PVC fiber dyed black is easier.

The internal structure of PVC is different from that of other synthetic fibers and the disperse dyes used need to be selected. Polyvinyl chloride fiber produced by different companies, its internal structure and dyeing performance is also greatly different, so the dyes and additives used for dyeing are generally provided by the company that provides the fiber, and the dye or additives must be selected through the test.

Polyvinyl chloride fiber as wig raw material, according to the depth can be divided into a lot of color number, according to the fiber manufacturer different and different quality, need to be distinguished. The differentiation of wig after dyeing is mainly based on the color and lustre of the retained end of the original silk, so the end of the hair needs to retain the original background color. That is, before dyeing, the fiber is bundled into a bundle, and the bundle end is wrapped with plastic cloth and tied tightly to prevent the end part from coloring and other parts dyed black.

The way to bundle the fiber hair is to bundle one end of the fiber with a rubber band first, bundle the fiber bundle, wrap the bundle end with a plastic bag and then tie it with a string. Each bundle of fiber is about 8g, the fiber bundle is too thick and the core is not evenly dyed, and when it is too fine, it is difficult to wrap the plastic bag in the following process. If the tie is not tight, in the dyeing is easy to scatter or leave the background part of the contamination. The dyeing equipment is stainless steel dyeing barrel with electric heating, the capacity is 50L.

Staining prescription: dispersed black EX -- SF (strength 300%) : 10% (OW1); Additive oil: 5% (OW1); Salt: 3g/L; Bath ratio: 1:15 ~ 1:20. In the prescription, auxiliary oil is the dye guide agent, its role is to help fiber expansion, promote dye diffusion; The amount of auxiliaries should be appropriate, too much or too little will affect the dyeing quality. The function of the salt is to promote the fixation of the dye in the fiber, breaking the temporary dyeing balance and allowing the dye to dye further.

PVC wig dyeing matters needing attention:

The use of stainless steel dye bucket. Iron, aluminum and other containers have reactive activity, will affect the dyeing performance of disperse dyes, so it is not appropriate to use iron, aluminum and other containers.

② Reasonable control of dyeing bath ratio. Only 2 ~ 3 fibrils can be added into the 40L dye solution in the dyeing barrel, which is not easy to mix evenly when adding too much, which is not good for penetration.

③ Strictly control the dyeing temperature. Due to the presence of dyeing AIDS, the dyeing temperature should not exceed 60cI =, and (55±1) cI = is appropriate. Low temperature dye diffusion is not enough, high temperature "hair" damage.

④ Operate carefully. Dyeing process stirring should be light and frequent, in order to prevent uneven dyeing, at the same time to prevent disturbing the hair; The hair end of the retention should be wrapped tightly with plastic bags to prevent the plastic bag from falling off and causing the retention part to be colored; The remaining part of the primary color should be clean and free from contamination, especially for light-colored raw materials, which are prone to contamination and need to be careful.

⑤ Strengthen post-processing. After dyeing, the water should be fully washed, so that the dyed product has good luster, smooth feel, not astringent and greasy. If the dyeing process is not well controlled or the washing is not sufficient, the fiber is greasy, not only will affect the hair effect, but also bring trouble to the processing process after the spring, such as choking machine.

⑥ Control the drying temperature. After dyeing fiber drying should pay attention to control the temperature, drying temperature should not exceed 80 ℃.