Due to the complexity of three-component fiber combination, mixing ratio, fiber luster, dyeing performance, staining, etc., the dyeing and color matching of three-component fiber textiles are much more complicated than that of two-component fiber products, and the obtained dyeing color effect changes due to the changes of the above factors. In general, it is very difficult to dye the same color effect, and different colors, white space, and different colors with white space are relatively simple.

If the dyeing properties of the three fibers are different, they need to be dyed with three types of dyes respectively, which is not only difficult to dye with the same color, but also difficult to obtain a multicolor dyeing effect with sharp contrast due to the mutual coloring of the three dyes between the three fibers.

This is easier to achieve if two of the fibers are stained with light or different colors, and one fiber is left white; If two of the fibers are dyed in a light color, and one fiber is dyed in a contrasting color, such a different color dyeing effect is also easy to achieve. For example, three component fiber textile products dyed with disperse dyes, cationic dyes, and acid dyes, because disperse dyes have an impact on the color of the fibers that can be dyed by two ionic dyes, the three colors are not limited in terms of color, and it is difficult.

solideffect (or union-dye effect) is when two fibers are dyed in a similar hue or tone, and the apparent color depth or color shade is similar, and the color brightness is also similar. If expressed by the color characteristic value, the same color effect means that the brightness or brightness L of the two fibers is similar, the red and green index a and the yellow and blue index b are similar, the hue Angle H is similar, the chroma C is similar, the reflection spectral curve and the maximum absorption wavelength λmax are similar, and the apparent color depth K/S value is similar.

Homochromatic dyeing is one of the most commonly used dyeing methods for two-component fiber textiles, especially for those developed for the purpose of reducing raw material costs, improving durability and improving physical properties of fabrics.

The difficulty of the same color dyeing varies greatly depending on the fiber combination. The combination of fibers with similar dyeing properties is easier to dye with the same color. The combination of fibers with particularly large differences in dyeing properties, as long as the two fibers are dyed separately, the problem of homochromatism can be solved by color matching, and the same color dyeing is relatively easy when the two kinds of dyes stain each other less or the stain is easy to remove.

The most difficult color dyeing is the dispersion dye-dyed polyester fiber and other disperse dye-dyeable fibers (such as acetate or other synthetic fibers) of the two-component fiber textiles, although by changing the dyeing temperature and adding dyeing carriers can adjust the amount of dispersion dye on the two fibers, but this adjustment is limited. Of course, for polyester/nylon or acrylic blended interwoven products, acid or cationic dyes can be used to adjust the nylon or acrylic to the same color as polyester. For the same color dyeing of acetate/polyester interwoven products, if it is dyed deep and strong color, the acetate fiber is easily damaged under harsh dyeing conditions, so the deep and strong color one-bath method is actually not feasible.

It is easier to obtain the same color dyeing effect of two-component fiber textile products, such as acid dyeable nylon or acrylic fiber and cationic dyeable nylon, polyester or acrylic blended interwoven products, because the two kinds of dyes/fibers between the degree of staining is small, it is easy to obtain the same color through color matching, and the repetition of dyeing is good.

The difference in gloss and light transmittance of each component fiber in two-component fiber textiles often affects the same color effect, for example, the light fiber/wool blend product is not as easy to dye the same color as the dull rayon or synthetic fiber/wool blend product.

The white space effect is when one fiber is stained while the other fiber is not stained and remains white. In some interleaved jacquard textiles, this white effect is often called "flash silver". White dyeing requires that when a dye dyes a fiber, it can not be contaminated with another fiber, and it must have an excellent anti-dyeing effect on another fiber, otherwise, it is difficult to obtain a white "flash silver" appearance.

The difficulty of blank dyeing depends on the combination of fibers, dye materials and dyeing process conditions of two-component fiber textiles. The rationality of fiber combination is the first factor that should be considered in the design of blank effect textile.

In order to obtain a good white dyeing effect, the fiber with large difference in dyeing properties should be selected as the raw material, and the luster of the white fiber itself should often be better than the luster of the dyed fiber.

The dyeability of synthetic fibers is usually worse than that of natural fibers and ordinary rayon, and when dyeing natural fibers and rayon, synthetic fibers are generally colorless or colorless, so it is easier to obtain a good white effect as a white fiber component. Typical examples such as wool/polyester, silk/polyester, wool/acetate, viscose/polypropylene and other blended interwoven products, in wool, silk, viscose fiber dyeing, polyester, polypropylene and acetate fiber generally do not stain; However, if wool is used as a white fiber component, the difficulty of white dyeing is very difficult, almost impossible, because when dyeing acetate and polyester fibers with disperse dyes, the wool stain is particularly serious, and the stain of disperse dyes on the wool is difficult to wash away.

For protein fiber/regenerated cellulose fiber textiles, many acidic dyes cannot be dyed or contaminated with regenerated cellulose fiber under acidic conditions, so the regenerated cellulose fiber is easy to leave white. For this type of product, there are photoviscose rayon and glossy Modal fiber is often used as a white fiber component. In the silk industry, silk/viscose rayon jacquard interlace or quilt is a traditional product that is easy to get a white effect.

In two-component fiber textiles, the example of acid dyeable fibers (such as wool, silk and nylon) as a white fiber component is extremely rare, which is mainly determined by the dyeing characteristics of these fibers, because many dyes stain acid dyeable fibers when dyeing other fiber groups. Wool-leavened wool-blended and interwoven articles are virtually non-existent; It is not easy to see the blended interwoven products of polyamide with good white leaving effect, and the polyamide fiber in polyamide/acetate or polyester interwoven material can not get the white leaving effect. The interlace of nylon and viscose or cotton fiber can make nylon white, but the dyeing is very difficult, and it is necessary to screen cellulose fibers with dyes, add anti-stain agents, and reasonably control dyeing temperature and dyeing bath pH value to make nylon white.

For some fiber combinations, such as acrylic or polyester/cellulose fibers, acid dyeable synthetics/cationic dyeable synthetics, it is possible to achieve white space in both fibers.

Some people believe that it is easier to develop fabrics with white effect if the color fiber is used in the stock solution or the color fiber is blended with white fiber and the color yarn is woven together with white yarn. However, the colored fibers or yarns must have a high washing fastness and can withstand the post-dyeing process, otherwise, such fabrics (mainly dyed fibers and yarns) may still have the phenomenon of white fibers staining during washing or desizing, affecting the white effect.

Hai'an County Qinfeng Chemical Fiber Co., Ltd. specializes in production and sales：polypropylene staple fiber, Polyester Staple Fiber, functional polypropylene short fiber, functional polyester staple fiber, hydrophilic polyester staple fiber,  polypropylene, PP staple fiber, polyester staple fiber.