JP7569064B2 - Tie-dyeing using a dyeing pot - Google Patents

Description

The present invention relates to tie-dyeing with highly fashionable patterns and colors.

In recent years, in response to new sensibilities and fashion trends, tie-dyeing, in which dye spots are artificially created to create patterns with irregular shapes and colors that change randomly in tone, has been applied to clothing products such as T-shirts and textile products such as interior fabrics.

A dyeing method that produces such dye spots involves wrinkles on clothing products or fabrics to be dyed, folding the fabric, and tying it with rubber bands or string to make a lump of fabric, which is then immersed in a dyeing solution to produce irregular patterns and colors. Dyeing methods that produce dye spots and produce irregular patterns on fabrics have been studied for some time. For example, Patent Document 1 describes a dyeing method in which fabrics are dyed by converging them into a rope shape or by compressing them, resulting in an irregular three-dimensional pattern effect on the fabric, and Patent Document 2 describes a method for producing a fabric structure with a wrinkled pattern by subjecting a cellulose-based fiber structure to a wrinkled processing, packaging the fiber structure, and then immersing and leaving it in a treatment solution consisting of a vinyl sulfone-type reactive dye and an alkali.

Furthermore, Patent Document 3 describes a simple dyeing method in which a fabric is impregnated with an acidic chitosan solution as a modifier, then wrinkled and dried to modify the fabric unevenly, and the unevenly modified fabric is then dyed with a reactive dye to obtain a two-hue mottled fabric with excellent sensitivity and fashionability. Furthermore, Non-Patent Document 1 of Electronic Technical Information introduces handmade tie-dye dyeing samples and working methods, and tie-dye dyeing, in which dyed spots are artificially generated to produce unique patterns and colors with irregularly changing color tones, is well known.

On the other hand, dyeing of threads and fabrics is often performed by dip dyeing, in which the item to be dyed, such as threads or fabrics, is immersed in a dyeing tank (dyeing vat) containing various dyes and chemicals. This dip dyeing process uses a large amount of water and energy, creates dead space in the dyeing tank, and generates colored wastewater that contains unfixed dye and unused chemicals, which requires wastewater treatment. For this reason, from the perspective of reducing the environmental impact, it is desirable in the dip dyeing process to use dyes and chemicals efficiently, reduce the amount of colored wastewater, make effective use of dead space, and eliminate waste of water, energy, dyes, and chemicals.

Japanese Unexamined Patent Publication No. 48-96887 Japanese Unexamined Patent Publication No. 7-11591 JP 2006-200045 A

Dylon Co., Ltd., [2017.06 Dylon News Vol.02], [online], [Retrieved May 18, 2020], Internet <URL: http://www.dylon.co.jp/dylon_news/02/02.pdf>

The objective of the present invention is to provide a tie-dyeing method that effectively utilizes the dyeing solution used for the original dyed item, reduces waste of water, energy, dyes, and chemicals, and responds to new sensibilities and fashion trends by artificially generating dye spots to create patterns with irregular shapes and colors with irregularly changing color tones.

The tie-dye method of the present invention is a method in which a textile product that has been wrinkled and folded into a lump is placed in the dead space of a dyeing tank and immersed in the dyeing solution together with the original item to be dyed for dyeing, or a method in which a textile product that has been wrinkled and folded into a lump is placed in a dyeing tank after the dyed original item is removed, and then immersed in the remaining dyeing solution for dyeing. In the former tie-dye method, dyeing may be completed at the same time as the original item to be dyed, or after the dyed original item is removed, the product may be further immersed in the remaining dyeing solution for dyeing.

The dyeing tank may be a dyeing tank of a dyeing machine that dyes the item by immersing it in the dyeing solution in a batch process, and is particularly preferably a dyeing machine that dyes by circulating the dyeing solution. A cheese dyeing tank of a cheese dyeing machine is preferably used. This tie-dye method is applicable to textile products used for clothing products, miscellaneous goods, interior goods, etc., and is preferably applied to T-shirts, which are clothing products.

The textile product can be made into a block by folding it with wrinkles and tying it with string or by bagging it. There are no particular restrictions on the material of the string, and various types of textile, leather, rubber, plastic, etc. can be used. When bagging, it is necessary that the dye solution can penetrate into the inside of the bag, so cloth bags made of woven fabric or net bags made of a net material with mesh are used. In addition, the textile product that has been folded with wrinkles can be wrapped in a heat-shrinkable film with many holes, and heat is applied to shrink it into a block.

In addition, in the above-mentioned tie-dyeing method, a preferred tie-dyeing method is characterized in that the dyeing solution used is a dyeing solution prepared using a disperse dye containing two or more dyes and having an adjusted hue.

By placing the textile product in the dead space of the dyeing tank and immersing it in the dyeing solution together with the original item to be dyed, or by continuing the tie-dye process after removing the original item to be dyed, or by immersing the textile product in a block in the remaining dyeing solution in the dyeing tank after removing the original item to be dyed, it is possible to effectively utilize unfixed dye and unused chemicals on the original item to be dyed, which contributes to reducing the amount of dyeing wastewater and eliminates waste of water, energy, dyes, and chemicals.

In normal dip dyeing, the item to be dyed and the dyeing solution are circulated to ensure uniform penetration of the dyeing solution into the item to be dyed, such as thread or fabric, but the dead space in the dyeing tank does not necessarily ensure uniform penetration of the dyeing solution. However, in tie-dyeing, dyeing spots are artificially generated to create irregular patterns and colors, so dyeing spots caused by placing the textile product in the dead space of the dyeing tank are acceptable, and even if dyeing spots caused by placing the textile product in this dead space are added to dyeing spots caused by folding the textile product and tying it with string to form a mass, patterns with shapes that correspond to new sensibilities and fashions and colors with changing hues can be obtained. Furthermore, in the dyeing solution after dyeing the original dyeing item, the balance of dye and additives may not necessarily be appropriate, but dyeing spots caused by this are also acceptable.

In addition, in a cheese dyeing tank, the yarn, which is usually the item to be dyed, is set on the spindle as a cheese wound on a bobbin, making it easy to obtain dead space in which to place the textile product to be tie-dyed.Furthermore, dyeing can be performed under high temperature and pressure conditions, making it possible to produce tie-dye dyeing that produces a wide variety of patterns and colors.

In the case of disperse dyes, two or more dyes may be mixed to adjust the hue. When a dyeing solution prepared using such disperse dyes is used, the degree and speed of penetration and diffusion into the textile product that has been wrinkled and folded into a block will differ for each dye mixed in, resulting in a textile product with a tie-dye dyed finish in a variety of mottled patterns and colors that differ from the dyed color tone set for the original dyed product.

A T-shirt that is wrinkled, folded, tied with string, and dyed into a block. A tie-dyed T-shirt. Schematic diagram of a cheese dyeing machine.

The following describes the embodiments of the present invention in more detail.

In the present invention, as described above, a textile product 1 in a lump form is placed in the dead space generated in the dyeing tank as shown in FIG. 1, and is then immersed in the dyeing solution to perform tie-dyeing. The textile product 1 is wrinkled, folded, and tied with string 2 to form a lump form. As described above, string 2 can be made of various materials, and can also be tied with a rubber band. When the textile product 1 in a lump form is immersed in the dyeing solution, it is wrinkled and folded, and the degree of compression of the textile product 1 varies depending on the part due to the effect of tying with the string. Therefore, the penetration speed and impregnation amount of the dyeing solution differ depending on the part, and the amount of dye that is dyed changes, and a dyed spot pattern that reflects the shape of the wrinkles is formed. Instead of tying with string, the textile product may be wrinkled and folded, and then packed in a cloth bag or net bag to form a lump form, or it may be wrapped in a heat-shrinkable film with many holes and shrunk by applying heat to form a lump form.

The dyeing tank in which the lump-shaped textile product 1 is placed is a dyeing tank for a dyeing machine that dyes the product by immersing it in a dyeing solution by batch processing, and dyeing tanks used in various dyeing machines for yarn dyeing and fabric dyeing can be used. As the dyeing machine, a dyeing machine that generates a liquid flow of the dyeing solution to dye the product is preferable, and the dyeing tanks of dyeing machines such as a package dyeing machine that packs cotton-like or skein-like fibers in a basket and immerses them in the dyeing solution in the dyeing tank, a cheese dyeing machine that stacks cones or cheeses with yarn wound on bobbins in the dyeing tank and circulates the dyeing solution to dye the product, a skein dyeing machine that attaches a skein-like yarn to an arm in the dyeing tank and sprays the dyeing solution to immerse the yarn in the dyeing solution, a liquid flow dyeing machine for fabric dyeing that immerses the roll of fabric in the dyeing solution while moving it, and a tumbler dyeing machine that dyes products can be used.

The cheese dyeing tank used in the cheese dyeing machine is suitable for use because it does not affect the dyeing of the original product, it is easy to secure dead space, and various conditions can be set from high to low temperatures.

Figure 2 shows a T-shirt that has been tie-dyed by first being treated with desizing and the like, then wrinkled, folded, tied with string to form a block, placed in the dead space of a dyeing tank, and immersed in the dyeing solution. T-shirt 3 shown in the upper figure (a) is a T-shirt that has been tie-dyed by pinching the center of the front body, twisting it around to create spiral wrinkles, gathering it into a block, tying it with string, and placing it in a dyeing tank, and the tie-dye pattern 4 has a spiral pattern centered on the chest. T-shirt 5 shown in the lower figure (b) is a T-shirt that has been tie-dyed in the same way, gathering it into a block, tying it with string, while creating radial wrinkles along the neck, and the tie-dye pattern 5 has a pattern that radiates from the neck. In this way, the textile product is wrinkled, folded, tied with string, and dyed as a block, with the aim of creating a final tie-dye pattern. However, when creating the wrinkles, it is also possible to tie the fabric with thread, as in regular tie-dyeing, to create a gradated pattern.

As mentioned above, the material of the string used to tie up the textile product is not particularly limited, and various types of textiles, leather, rubber, plastic, etc. can be used. The textile product may then be packed into a cloth bag or net bag to form a block of textile products. Furthermore, the textile product may be wrapped in a heat-shrinkable film made from stretched plastic film such as polypropylene, polyethylene, polyvinyl chloride, or polyester, with numerous holes formed in it, and then the product may be shrunk by applying heat to form a block.

Figure 3 shows a schematic diagram of a cheese dyeing machine 10, which is an apparatus for dyeing cheese 20 placed inside a sealed pressure-resistant cheese dyeing tank 11. The cheese 20, which is made by winding yarn around a bobbin with many holes, is attached to many spindles 14 installed on a carrier 15 and rotates inside the dyeing tank 11. The dyeing liquid in the cheese dyeing tank 11 is circulated by a pump 12, and as shown by the arrows in the figure, the dyeing liquid discharged from the pump 12 is supplied to the inside of the spindle 14, passes through the bobbin 20, and returns to the pump 12. The cheese dyeing tank 11 is equipped with a heating pipe 13, which can heat the dyeing liquid inside, and dyeing is performed by setting the temperature according to the fiber material of the yarn and the type of dye. Natural fibers such as cotton, wool, and silk are dyed at a temperature of 50 to 100°C, and synthetic fibers such as nylon and acrylic are dyed at about 100°C, but when dyeing polyester with a disperse dye, it is dyed at a high temperature of about 110°C to 140°C.

In Figure 3, a portion of the cheese 20 attached to the spindle 14 is shown, but typically 10 or more spindles 14 are installed on the carrier 15, and as the row of cheeses 20 set therein rotates and moves inside the cheese dyeing kettle 11, the dyeing liquid circulates, uniformly dyeing all of the yarn wound into the cheese. Since dyeing is performed in this manner in the cheese dyeing machine, even if a textile product tied with a string and formed into a mass as described above is placed in the dead space, as long as the rotational movement of the row of cheeses 20 set in the cheese dyeing kettle 11 is not impeded, there is little change in the circulation of the dyeing liquid, making this convenient for performing the tie-dye dyeing of the present invention.

When utilizing the dead space in the cheese dyeing tank, after removing the cheese, which is the original item to be dyed, from the dyeing tank, the tank is closed again and the remaining dyeing liquid is heated to continue dyeing the textile product in a lump form, and the unfixed dye and unused chemicals on the cheese threads can be utilized to reduce the burden of disposing of the dyeing effluent.

In addition, after cheese dyeing without placing the clumped textile product, the cheese, which is the original item to be dyed, can be removed, and then the clumped textile product can be placed in the cheese kettle and immersed in the dyeing solution remaining in the cheese kettle to perform tie-dyeing. This method makes effective use of the remaining dyeing solution and reduces the processing burden of the dyeing wastewater.

On the other hand, when dyeing textile products, the dyes used are limited by the fiber material that makes up the item being dyed. The main dyes used are limited: direct dyes or reactive dyes for cotton and cellulose, acid dyes for wool, silk, and nylon, cationic dyes for acrylic, and disperse dyes for acetate and polyester.

As described above, the tie-dyeing of the present invention utilizes the dead space and remaining dyeing liquid in the normal dyeing process. Therefore, the materials of the textile products to be tie-dyed and the colors that can be dyed are limited, but by selecting a textile product made of the same material as the original dyed item in the normal dyeing process or made of a material that can be used with the dye used, the tie-dyeing of the present invention can be performed in parallel with the normal dyeing process.

Disperse dyes used in dyeing polyester may be mixed with two or more dyes to adjust the hue, and mixtures of multiple dyes are also supplied. Disperse dyes are water-insoluble and are supplied in the form of fine powder, paste, or dispersion after being microparticulated and dispersed, to which warm water is added to make a uniform dispersion for use as a dyeing solution. In a typical dyeing process using such disperse dyes, the dyes are uniformly permeated and fixed into the polyester product to obtain a dyed product of the designed color tone. In this case, various dyeing auxiliaries and disperse dyes of various colors may also be added to obtain the designed color tone.

In the tie-dyeing of the present invention, the textile product to be dyed is wrinkled and dyed as a lump, so the degree of tightening varies depending on the part of the textile product, and the apparent density changes. Therefore, when dyeing with a dyeing solution of disperse dyes in which two or more dyes are mixed and the hue is adjusted as described above, not only does the degree and speed of penetration and diffusion of the dyeing solution itself differ, but the dyeing ability of the molecules of each mixed dye in the textile product and the dyeing ability of the textile product based on the size and shape of the dispersed fine particles differ for each dye. Therefore, unlike the dyeing color set for the original dyeing product, different dyes are dyed depending on the part of the textile product, and the dyed hue differs depending on the part, resulting in a textile product with a variety of mottled patterns and colors that are tie-dyed. Furthermore, the mottled patterns and color changes depending on the part of such a lump-shaped textile product change depending on the temperature conditions during dyeing, so even if the same dye and textile product made of the same material are used, different color changes are produced, and products with dyed patterns with unexpected effects can be obtained.

1. Blocked textile products 2. Strings 3. 5. T-shirts 4. 6. Tie-dye patterns

10 Cheese dyeing machine 11 Cheese dyeing tank 12 Pump 13 Heating pipe 14 Spindle 15 Carrier 16 Dye dissolving tank 20 Cheese

Claims (4)

A tie-dyeing method in which a textile product is wrinkled, folded, and formed into a lump, and then immersed in a dyeing solution in a dyeing kettle to dye the textile product,
A cheese dyeing kettle is used as the dyeing kettle,
The block of textile product is placed in the dead space of the cheese dyeing tank , and is immersed in a dyeing solution together with a cone or cheese having yarn wound on a bobbin to dye the product. A tie-dyeing method in which a textile product is wrinkled, folded, and formed into a lump, and then immersed in a dyeing solution in a dyeing kettle to dye the textile product,
A cheese dyeing kettle is used as the dyeing kettle,
In the tie-dyeing method, after the cone or cheese with the yarn wound on a bobbin is immersed in the dyeing solution in the cheese dyeing tank and dyed, the lump-shaped textile product is placed in the cheese dyeing tank and immersed in the remaining dyeing solution to dye it. 2. The method according to claim 1, wherein the dyed corn or cheese is removed and then further immersed in the remaining dye solution for dyeing. The tie-dyeing method according to any one of claims 1 to 3, characterized in that the dyeing solution is a dyeing solution prepared using a disperse dye containing two or more dyes and having an adjusted hue.

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