Garment dyeing process and application

Introduction

In modern society, with the rapid development of science and technology, people have higher demands on food, clothing, housing, use and Transport. Especially under the premise ofDiversification of social forms and the overall improvement in people\'s living standards, people\'s requirements for the function of clothing and clothing are becoming less and less, and the need for clothing, too, is increasingly paying attention to style, color and other individual requirements. Therefore, the art of dyeing and finishing garments has evolved rapidly. People must have different designs and requirements for clothes. At the same time, the development trend of fashion clothing style, fabric novelty, color variety, personalized and traditional industrial production, large amounts of supply and demand contradiction are more pronounced, small batches, multiple varieties, short process of clothing production can follow the trend of clothing fashion color development, which also the case is conducive to the development of clothing dyeing.

Therefore, the dyeing and finishing process is required to make the cloverto give objects their own characteristics. Through the drying and finishing technology of the garments, it can further meet people\'s design needs.

In addition to the dyeing and finishing process and its equipment, there has also been a great change. Dyeing and finishing as a specialtyThe new technology can show the unique characteristics of different types of clothing, which helps to provide consumers with personalized, novel and tasteful clothing products. At the same time, it also contributes to improving the wearing comfort of clothing and significantly improving the functionality of ready-made clothing. There are big differences in the dyeing and finishing technology of different types of clothes.

Characteristics of the garment drying and finishing process

Clothing dyeing and finishing is mainly done by treating untreatedth fabrics and processed fabrics after expanding the proportions, sewing clothes according to the shrinkage rate of clothes and fabrics, and drying and finishing of clothes, providing processing, drying and finishing of clothes.

In the process of drying and finishing garments,For processing requires special processing methods, and dyeing and finishing equipment is used to improve production efficiency. In general, the garment dyeing process is mainly carried out with loose equipment. Various treatments, dyeing and finishing processes are carried out in the washing machine, and the clothes are dried with hot air. The products processed by dyeing and finishing technology are softer, dullSheer, wrinkle-free and fall better than before dyeing and finishing. After the garment is dyed and finished, the fibers on the surface of the garment are more fluffy, the touch is smoother, and the surface finish is higher. And after the special drying and finishing process, the garment also exhibits other properties.

Garment Dyeing

Different fibers have different properties. Due to the different structure of each fiber, it is necessary to use different processes in dyeing and finishing, especially in garment dyeing, to achieve the best dyeing, to make the clothing style fashionable, novel, color diversified and personalized, promote the development of Garment Dyeing.

Cellulose Fiber Dyeing

Dye Selection: We know that cellulose fibers are easy to process dye, and it can do a variety ofDyes are used, such as B. Reactive dyes, direct dyes, vulcanized dyes, etc. We should select suitable dyes for dyeing according to the dyeing and finishing effect of garments.

Dyeing Process: Let\'s take reactive dyes as an example: In the process of dyeing and finishing cellulosic fiber, there must be three Steps are passed through, such as dyeing, dye fixing and treatment to improve dye fastness. Since reactive dyes are easily dissolved in water, suitable salt can be added during the dyeing process to promote the absorption of dyes by cellulose fibers.

If you choose reductive dyes, you need to reduce the dissolved, hidden chromosome staining and the hidden chromosomes perform oxidation, soap boiling and oother stages. Because reductive dyes are insoluble in water, they must be dyed in an alkaline solution.

Vulcanized dyesSubstances are aromatic and phenolic compounds containing sulfur and polysulfide in dyes. The cost of vulcanized dyes is relatively low. and it is widely used in the dyeing of cotton fabrics and cellulosic fibers, but is not resistant to chlorine bleach and easily fades after exposure to sunlight. Therefore, vulcanized dyes are commonly used to dye dark colored clothing.

Direct dyes belong to the azo and heterocyclic dyes family. They can be divided into different types depending on the power used. In the drying and finishing of garments, the most common are: direct true dye, direct copper salt dye, direct crosslinking dye, direct mixed dye, etc.

Silk Garment Dyeing

It is relatively easy to dye real silk garments because silk fabrics generally have good dyeing performance and can be treated with acid, reactive and alkali und other dyes. From the aspenIn terms of brightness, color rate, saturation, etc., acid dyes and reactive dyes are mainly used.

It is very easy to dye mulberry silk fabric with acid dye. You just need to fix the color. Acid dyes can be divided into strong acid dyes, weak acid dyes and neutral bath dye acid dyes. Strong acid dyes are often used to dye woolen fabrics. Weak acids are used to dye silk and nylon fibers. Acid dyes for neutral bath dyeing are also dyes for dyeing silk fabrics.

Dying silk garments with reactive dyes. Because mulberry silk is easy to dye when dyeing, silk garments can be selected from a variety of dyes for dyeing and finishing. Generally, occasionally, the weak acid dye color is lighter, but the degree of fixation is not high. neutral dyeffe have a good degree of color fixation, but the color is not high. Reactive dyes are light in color, such as Such as red, yellow and other bright colors, easy to fix.

Wool garment dyeing

Sweater dyeingThere are also a variety of dyes, such as: acid dyes, acid medium dyes, special reactive dyes for wool etc. These dyes have their own advantages, relatively light colors and more complete chromatography. Due to the poor fixability of acid dyes, acidic medium dyes and acidic carbon dyes are widely used for dyeing sweaters.

The elements of wool fiber are mainly composed of carbon, hydrogen and nitrogen, and the main component is protein. Therefore, payment is required When dyeing, pay attention to the selection of appropriate dyes according to the specifications and dyeing requirements of woolen sweaters, so that woolen sweaterscan be dyed evenly, reducing the deterioration of wool and ensuring the color of woolen sweaters.

Wool Blend Garment Dyeing

Wool blend garments mainly refers to garments composed of two or more types of textile materials. If there are wool fibers in the blend it is a wool blend, if there are no wool fibers it is a wool-like blend.

Wool and nitrogen blend dyeingded fabric

Wool and nitrogen blend dyeing fabrics, light color can be used in one bath process, dark color can be used in two-step bath or two-bath processes. One-bath dyeing mainly refers to the use of cationic dyes and weak acid dyes and neutral dyes for dyeing. A two-bath dyeing process can be used to dye wool nitrogen fabrics. For dyeing wool whothe weak acid dyes and neutral dyes or acidic middle dyes are used, and then a new bath is used for dyeing acrylic textiles with cationic dyes.

Dyeing of wool/cellulose fiber blends

There are two types of wool/viscose blends, Wool and fine wool blends. The two kinds of products should be colored according to different drying and finishing needs. Generally one-bath or two-bath dyeing is used for wool-rayon blended fabrics. Similar to the blended fabric of wool and nitrogen, the blended fabric of the same color can be dyed by direct dyeing with a bath process; Content, for which products with higher dyeing requirements, the two-bath method of dyeing should be used. When using the two-bath method, the acid dye, acid medium dye, etc. is used on wool shrinkable fabric and wool cleaning. Direct dye is used for dyeing viscosefiber. Before dyeing with the direct dye, it is necessary to clean the residual acid and pH of the dyeing solution to avoid dyeing wool with the direct dye in the acid bath, so that the color will not be beautiful.< /p>Wool/ Dyeing brocade blends

Wool/brocade blends are normally dyed in a bath. Since both wool and nylon can be dyed with acid dyes, the main difference between them is that the color saturation value of nylon is low and the dyeing rate is high. The color saturation value of wool is high, but the dyeing rate is low. Therefore, when dyeing wool/brocade blends, the amount of dye should be controlled. When dyeing medium and light colors of wool/brocade blends, surfactants or non-ionic surfactants should be used in modlls a strong heat retention and are soft and moth-free. They have good drying ability and can be made into all kinds of clothes. Acrylic blend fabrics are mainly pure acrylic sweater, wool/acrylic sweater, acrylic/rabbit sweater.

Pretreatment for dyeingDying acrylic sweater and imitation cashmere sweater

For pure acrylic sweater and imitation cashmere sweater, dyeing pretreatment is used mainly the refinement and removal of oil and impurities on acrylic fibers and other short fibers. Because the acrylic fibers have a certain degree of whiteness, fluorescent whitening can achieve better bleaching effects.

According to the characteristics of acrylic fibers, cationic dyes can improve dye fastness and color. When dyeing, first use acetic acid to set the pulp, then rinse with boiling water, further heat to 70°, additives and dissolved cationic dyeAdd f, dye 2min, dye fully, put on the imitation cashmere sweater, dye according to the heating process. After dyeing, cool with cold water, wait 40 minutes, cool to 55°C, drain the residual liquid, rinse again, add fabric softener and soak for 20 minutes, dry, iron and shape.

Polyester and mixed garment dyeing

Polyester is characterized by strength, elasticity, abrasion resistance, light resistance and corrosion resistance. Therefore, polyester can be used for some special purpose of clothing and clothing. However, polyester fibers have poor drying performance and can only be dyed with disperse dyes.
Disperse dyes can be divided into azo, heterocyclic, transiently soluble decomposition materials, polymerizable polymer disperse dyes and solvent disperse dyes according to their structure. Depending on the application of the dyeffs it can be divided into S type with good sublimation fastness and poor levelness, E type with poor sublimation fastness and good levelness, and SE type in between.
As a kind of nonionic dyes, disperse dyes have low water solubility and can diffuse into the voids of polyester fibers . The solubility can be improved by adding an appropriate amount of dispersing agent. Therefore, the temperature increase of the dyeing bath can improve the speed of dyeing, low temperature does not have the effect of promoting diffusion.
There are three main dyeing methods for polyester and its mixed garments: high-temperature and pressure dyeing, hot-melt dyeing and carrier dyeing. These three dyeing methods place different demands on the dye. The most common method is carrier staining. The carrier dyeing method does not require high temperature treatment and can be used within 100℃ under aatmospheric pressure. It can also be dyed manually with dye VAT. In this way, the garments are not too wrinkle-free but very smooth and the color can be corrected at any time, which is conducive to production.
Example of an elastic polyester sweater: polyester lO- elastic yarn has good scalability and fluffiness, making garments crisp, shape-retaining, non-shrinking, quick-drying and soft. It is a common material for sportswear, coats and tights.

Dying nylon and ammonia cotton garments

Polyamide fibers are hydrophobic fibers and have the best dyeing performance among synthetic fibers. Therefore, polyamide can be dyed with both acid dyes and disperse dyes. Acid dyes can be combined with amino groups in polyamide fibers Dye polyamide fibers. And the acid dye color is lighter than the chromatographere is more complete and therefore has better uniformity.

Artistic dyeing of garments

Currently, a variety of printed patterns and graffiti patterns on clothing can be seen everywhere. Compared with the traditional drying and finishing process, these hand-dyed, tie-dyed and dye-splattered garments, in line with the diversified society of personalized clothing development, are more suitable for young people, and are also a new clothing fieldng dyeing and finishing process development. At the same time, the development trend of fashionable clothing style, fabric novelty, color variety, personalized and traditional industrial production, large quantities of supply and demand contradiction is more pronounced, small batches, multiple varieties, in short, the process of clothing production can follow the trend of color development in the Clothing fashion follow, which also the developmentng of clothing dyeing.

Tie Dye

Batik

Advantages of Garment Dyeing

Garment Dyeing is an intermittent process. Garments are pre-treated, dyed and finished in the garment dyeing machine. Garment dyeing and finishing requires special processing methods and dyeing and finishing equipment is used to improve production efficiency. The processing time is long, in production, the process conditions are due to some uncertain factors and random changes, resulting in uneven drying, serious cylinder differences and other phenomena.

Reactive dyes They are hardly dependent on the dyeing process conditions, have a good staining stability and good reproducibility. Garment dyeing and finishing should use special processing methods of processing and dyeingTo improve production efficiencyTo improve efficiency, finishing devices should be used. They flexibly adapt to the conditions of the drying process, and can greatly reduce the color difference and cylinder difference caused by the constant random change in the drying process conditions, so as to reduce the repair rate, the rate of defective drying products, improve work efficiency and have obvious economical advantages. Reactive dyes have high drying rate and color fixing rate, full color, bright color, good compatibility, high amplification rate and good drying depth. It can et adapt to the needs of the current garment industry, adapt to the needs of different colors, small batches and many varieties, and greatly improve the degree of drying of garments. When drying and finishing garments, special processing methods must be usedUsing dyeing and finishing equipment improves production efficiency and increases the reaction probability of dye and fiber, and the fixation rate is about 80%, which is a significant improvement compared to the fixation rate of single active group reactive dyes. After dyeing, the dye concentration remaining in the dye bath is lower, the dye dosage is smaller, and the dyed waste water treatment cost is reduced, and the overall economic benefits are significantly improved. Reactive dyes are both acid and alkali resistant in chemical structure, oxygen bleaching and chlorine bleaching under general conditions, and also solve the fastness problem of fading due to broken chains when using reactive dyes. It has good drying stability and good drying fastness. At the same time, but also in line with the fashion of clothing style, fabric novelty,the variety of colors and the trend towards personalized development.

Prev: Package dyeing machine requirements and features