Tie-dyeing using heat-shrinkable film

Abstract

To provide a means for easily making a fiber product that is a dyeing object into a massive shape by a simple means in a tie-dye dyeing method which copes with new sensitivity and fashionability and offers hue in which irregular-shape pattern and color tone change irregularly by artificially generating uneven dyeing.SOLUTION: A tie-dye dyeing method includes: rucking and folding a fiber product 1; wrapping the fiber product with a heat shrinkable film sheet 2 with a large number of holes; compressing the fiber product into a massive shape by a heat shrinkable film sheet 2a shrunken under heat application; and dyeing the fiber product 1a by immersing the fiber product 1a in a dyeing solution.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to tie-dyeing having highly fashionable patterns and colors. [Background technology]

[0002] 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.

[0003] A dyeing method for producing such dye spots involves wrinkles on clothing products or fabrics to be dyed, folding the fabric, and tying it with a rubber band or string to form a mass of the fabric, which is then immersed in a dyeing solution to produce a pattern or color with an irregular shape. Dyeing methods for producing dye spots to 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 indentation shrinking, thereby producing an irregular three-dimensional pattern effect on the fabric, and Patent Document 2 describes a method for producing a fabric structure having 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.

[0004] Furthermore, Patent Document 3 describes a simple dyeing method in which a fabric is impregnated with an acidic chitosan solution as a modifier, and then the fabric is wrinkled and dried to modify the fabric non-uniformly, and then the non-uniformly modified fabric is dyed with a reactive dye to obtain a two-hue mottled fabric with excellent sensitivity and fashionability. Also, 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.

[0005] However, in tie-dyeing, the process of compressing and tying the wrinkled and folded textile product into a lump by string or the like is a time-consuming process, and a method for performing this process easily is desired. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Unexamined Patent Publication No. 48-96887 [Patent Document 2] Japanese Patent Application Publication No. 7-11591 [Patent Document 3] JP 2006-200045 A [Non-patent literature]

[0007] [Non-Patent Document 1] 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> Summary of the Invention [Problem to be solved by the invention]

[0008] To provide a means for easily forming a block of a textile product to be dyed by simple means in a tie-dyeing method in which dye spots are artificially generated to produce patterns of irregular shapes and colors with irregularly changing color tones in response to new sensibilities and fashion trends. [Means for solving the problem]

[0009] The tie-dyeing method of the present invention is a tie-dyeing method in which a textile product is wrinkled and folded, wrapped in a heat-shrinkable film having a number of holes, and heat is applied to shrink the heat-shrinkable film, and the textile product is compressed and packaged into a block, and then immersed in a dyeing solution to dye the textile product, The process of wrapping the wrinkled and folded textile product with the heat-shrinkable film is characterized by being either the process a or b below. a. A process of folding the heat-shrinkable film in half at the spine, sandwiching the textile product between the folded heat-shrinkable film, and then sealing the three open ends of the folded heat-shrinkable film other than the spine, thereby enveloping the entire textile product with the heat-shrinkable film. b. A process of sealing one open end of the tube made of the heat-shrinkable film to house the textile product inside the bag-shaped body, and then sealing the open end of the heat-shrinkable film to encase the entire textile product in the heat-shrinkable film.

[0010] A heat-shrinkable film is a plastic film that has been stretched and shrunk by heating, and is used for compressing and packaging items, and is used for packaging and fixing food, daily necessities, sporting goods, and various industrial products. In the method of the present invention, a heat-shrinkable film with many holes is used. Heat-shrinkable films are provided as sheets or tubes, but in either form, it is sufficient that the film can wrap a folded textile product with wrinkles, and the heat-shrinkable film can shrink by heating after wrapping, and the textile product can be compressed and packaged into a block. In this case, a roughly folded textile product may be wrapped in a heat-shrinkable film, and heat may be applied to shrink the heat-shrinkable film, and the textile product may be made into a wrinkled block. In addition, since the dyeing solution does not pass through the heat-shrinkable film, a number of holes are provided, and the dyeing solution is allowed to penetrate the textile product that has been compressed and packaged into a block to dye it.

[0011] The method of immersing the lump-shaped textile product in the dyeing solution is not particularly limited, and the lump-shaped textile product can be immersed in the dyeing solution by putting it into a dyeing bath containing a dyeing solution in which a dye and an auxiliary are dissolved, or by showering the dyeing solution onto the textile product. The dyeing bath is not particularly limited as long as it is a container or tank that can contain the dyeing solution, and the dyeing tank or the dyeing solution circulating flow of various dyeing machines can be used. The tie-dye method is applied to textile products used for clothing products, miscellaneous goods, interior decoration, etc., and the material of the textile product is not particularly limited and various natural fibers, chemical fibers, and synthetic fibers can be used. In this way, by using the dyeing tank or the dyeing solution circulating flow of the dyeing machine, the tie-dye dyeing can be easily performed on polyester textile products. In addition, it can be preferably applied to T-shirts, which are clothing products.

[0012] In the above-mentioned tie-dyeing method, a dyeing solution prepared by using a disperse dye containing two or more kinds of dyes and having an adjusted hue can also be preferably used. Effect of the Invention

[0013] In the tie-dyeing method of the present invention, the textile product to be dyed is made into a block prior to immersion in the dyeing solution by wrapping it in a heat-shrinkable film and then heating and compressing and packaging it instead of tying it with a time-consuming string, which simplifies the work and shortens the work time. Furthermore, by changing the size and number of holes provided in the heat-shrinkable film, the pattern and color tone can be easily changed, and tie-dyed products with a wider variety of patterns and colors can be obtained with simple work compared to conventional methods. Furthermore, while designs and patterns have been applied to polyester textile products exclusively by printing, tie-dyeing can be easily performed by utilizing the dyeing tank or circulating dyeing solution of the dyeing machine as described above.

[0014] 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, folded, and formed into a mass varies for each dye mixed in the solution, resulting in a textile product with a tie-dye dyeing that has more complex mottled patterns and colors, different from the dyed color tone set for the original dyed product. [Brief description of the drawings]

[0015] [Figure 1] An explanatory diagram of how a wrinkled and folded textile product is compressed and wrapped in a heat-shrinkable film to form a block. [Diagram 2] A heat-shrinkable film tube with multiple holes. [Diagram 3] A tie-dyed T-shirt. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] The embodiments of the present invention will be described in more detail below.

[0017] The method of the present invention is a method in which a textile product to be tie-dyed is folded and wrinkled before being immersed in a dyeing solution, and then compressed and wrapped in a heat-shrinkable film to form a lump. As shown in the upper diagram of FIG. 1, a textile product 1 woven and wrinkled is sandwiched between heat-shrinkable film sheets 2 folded in half at the back 3, and the three open ends other than the back 3 are sealed to form a sealed portion 4, wrapping the textile product 1, and then blowing hot air onto the surface of the sheet to heat it and shrink it into a heat-shrinkable film sheet 2a. As shown in the lower diagram of FIG. 1, the entire sheet is compressed and wrapped into a lump of textile product 1a. Although not shown in FIG. 1, the heat-shrinkable film sheet 2 has many holes all over its surface. The wrinkled and folded textile product 1 is then compressed and wrapped in the shrinkable heat-shrinkable film sheet 2a to form a lump of textile product 1a, with the degree of compression varying depending on the portion. Therefore, when the textile product 1a is immersed in a dye solution, the penetration speed and amount of impregnation differ depending on the part as the dye solution penetrates into the textile product 1a through the holes provided in the heat-shrinkable film sheet 2a, and the amount of dye that is absorbed changes, forming a dyed pattern that reflects the shape of the wrinkles created.

[0018] FIG. 2 shows heat-shrinkable film tubes 5 and 6. The heat-shrinkable film tube 5 shown in (a) is sleeve-shaped with both ends 7 open, and has many holes 8 all over the side. The heat-shrinkable film tube 6 shown in (b) is bag-shaped with one end sealed to form a bottom 9. When using the sleeve-shaped heat-shrinkable film tube 5, the textile product can be folded and wrinkled and stored inside the tube, both ends 7 sealed and wrapped, and then hot air is blown onto the surface to heat it, shrinking the heat-shrinkable film tube 5 and compressing and packaging the entire textile product into a block. When using the bag-shaped heat-shrinkable film tube 6, the textile product can be folded and wrinkled and stored inside the bag from the open end 7, sealed and wrapped, and similarly shrinking the heat-shrinkable film tube 6 and compressing and packaging the entire textile product into a block.

[0019] As described above, the heat-shrinkable film is a plastic film that has been stretched, and is used to shrink when heated and to compress and package articles. Various materials can be used as the heat-shrinkable film, and examples of such materials include polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, polystyrene, and polyethylene terephthalate. The heat-shrinkable film is provided by forming a sheet by extrusion molding and stretching with a tenter, or by forming a tube by inflation molding, and can be used in either form as described above, but has a large number of holes to allow the passage of the dyeing solution.

[0020] When wrapping a textile product in a heat-shrinkable film in the form of a sheet or tube, the open end of the sheet or tube may be sealed by heat fusion using various sealers or by bonding the end using a pressure-sensitive adhesive tape. Furthermore, when a heat-shrinkable film tube is used, it is also possible to first heat and shrink only the open end to reduce the size of the open portion, and then heat and shrink the entire tube. After sealing the open end in this way, the entire tube can be heated and the wrapped textile product can be compressed and packaged in the heat-shrinkable film to form a block.

[0021] The method of heating the heat-shrinkable film encasing the wrinkled and folded textile products may be a method of applying hot air using a dryer, or a method of placing the film in a hot air circulation or infrared radiation oven, or a method of passing the film through a tunnel, and can be selected depending on the number of textile products to be dyed. Compared with the conventional method of tying the textile products with string, this method is simpler in operation and allows a large number of textile products to be efficiently dyed in a mass.

[0022] Figure 3 shows a T-shirt that has been tie-dyed by folding a T-shirt that has been previously treated with desizing, wrinkled, and compressed and wrapped in a heat-shrinkable film with many holes to form a block, then immersed in a dyeing solution. T-shirt 10 shown in the upper figure (c) is a T-shirt that has been tie-dyed by pinching the center of the front body, twisting it, folding it while creating spiral wrinkles, compressing and wrapping it in a heat-shrinkable film with many holes to form a block, and the tie-dye pattern 11 has a spiral pattern centered on the chest. T-shirt 12 shown in the lower figure (d) is a T-shirt that has been similarly tie-dyed by folding it while creating radial wrinkles along the neck, compressing and wrapping it in a heat-shrinkable film with many holes to form a block, and the tie-dye pattern 13 has a radial pattern from the neck. In this way, with the final tie-dye pattern in mind, the textile product is wrinkled and folded, compressed and wrapped in a heat-shrinkable film with numerous holes, and dyed as a block. When wrinkles are applied, the product can also be tied with thread to create a gradated pattern, as in regular tie-dyeing.

[0023] Furthermore, the tie-dye pattern will change if the number, size, and position of holes in the heat-shrinkable film are changed, so by making various preliminary changes and understanding the relationship with the dye pattern, it is possible to obtain irregular but desired design patterns and colors that correspond to new sensibilities and fashion trends.

[0024] The method of immersing the textile product compressed and wrapped in a heat-shrinkable film into a block in the dyeing solution is not limited to the above, and the textile product may be immersed in the dyeing solution stored in an appropriate container, but it is preferable to use a dyeing tank used in an existing dyeing machine, and dyeing tanks used in various dyeing machines can be used. As the dyeing machine, a dyeing machine that generates a liquid flow of the dyeing solution and dyes the textile 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 a dyeing tank, a cheese dyeing machine that stacks cones or cheeses with threads wound on bobbins in a dyeing tank and circulates the dyeing solution, a skein dyeing machine that attaches a skein of thread to an arm in the dyeing tank and sprays the dyeing solution to immerse the skein of thread 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.

[0025] In dyeing textile products, the dyes used are limited depending on the fiber material that constitutes the dyed product. The main dyes used are limited, such as direct dyes and reactive dyes for cotton and cellulose, acid dyes for wool, silk, and nylon, cationic dyes for acrylic, and disperse dyes for acetate and polyester. Furthermore, the temperature is set according to the fiber material of the thread and the type of dye, and 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 disperse dyes, it is dyed at a high temperature of about 110°C to 140°C. Therefore, if the dyeing tank of the dyeing machine is used, the dyeing work can be performed smoothly because it is equipped with auxiliary equipment for mixing the dye solution and adjusting the temperature of the dye solution. Furthermore, tie-dyeing can be easily performed on polyester fiber products.

[0026] In addition, 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 bath) in which various dyes and chemicals are charged. This dip dyeing process uses a large amount of water and energy, and generates dead space in the dyeing tank, and further generates colored wastewater, which is unfixed dye and unused chemicals, and requires wastewater treatment. Therefore, in the dyeing process by dip dyeing, it is desirable from the viewpoint of reducing the environmental load to efficiently use dyes and chemicals, reduce the amount of colored wastewater, and further effectively utilize dead space to eliminate waste of water, energy, dyes, and chemicals. However, in order to obtain uniform penetration of the dyeing solution into the item to be dyed, such as threads and fabrics, the item to be dyed and the dyeing solution are circulated for dyeing. However, the uniform penetration of the dyeing solution is not necessarily ensured in the dead space of the dyeing tank, and the dead space is not effectively utilized.

[0027] On the other hand, in tie-dyeing, dye spots are artificially generated to create irregular patterns and colors. Therefore, dye spots caused by placing the textile product in the dead space of the dyeing tank are acceptable, and even if dye spots caused by placing the textile product in this dead space are added to dye spots caused by wrinkling and folding the textile product and compressing and packaging it in a heat-shrinkable film to form a block, patterns of shapes that correspond to new sensibilities and fashions and colors with changing tones can be obtained.

[0028] Therefore, when using the dyeing tank of an existing dyeing machine as a method for immersing a textile product compressed and wrapped in a heat-shrinkable film into a block in a dyeing solution, it is possible to not only use it as a dedicated dyeing tank, but also to utilize the dead space to perform the dyeing work on the original dyed product at the same time, thereby contributing to reducing the environmental load. Furthermore, it is also possible to use the remaining dyeing solution after the dyeing work on the original dyed product, thereby increasing the efficiency of using the dyeing solution.

[0029] In addition, disperse dyes used for 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 finely divided and dispersed, and are used as dyeing solutions by adding warm water to them to make uniform dispersions. In a typical dyeing process using such disperse dyes, each dye is uniformly permeated and fixed into the polyester substrate to obtain a dyed product with a 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.

[0030] In the tie-dyeing of the present invention, the textile product to be dyed is wrinkled and dyed as a lump, so that 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 the degree and speed of penetration and diffusion of the dyeing solution itself differs, but also the dyeability of the molecules of each mixed dye to the textile product and the dyeability 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, the dye that is dyed differs depending on the part of the textile product, and the dyed hue differs depending on the part, and a textile product with a variety of mottled patterns and colors is obtained that is 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 that even if the same dye and textile product made of the same material are used, different color changes are produced, and a product with a dyed pattern with an unexpected effect can be obtained. [Explanation of symbols]

[0031] 1. Wrinkled and folded textile products 1a Lumped textile products 2. Heat-shrinkable film sheet 2a Shrinking heat shrinkable film sheet 3 tall 4 Seal Part 5, 6 Heat shrinkable film tube 7 End (opening) 8 holes 9 bottom 10, 12 T-shirts 11, 13 Tie-dye pattern

Claims

1. A tie-dyeing method comprising the steps of: wrinkling and folding a textile product; wrapping the product in a heat-shrinkable film having a number of holes; applying heat to shrink the heat-shrinkable film; compressing and packaging the textile product into a block; and then immersing the block in a dyeing solution for dyeing, A tie-dyeing method, characterized in that the step of wrapping the wrinkled and folded textile product with the heat-shrinkable film is either the step a or b below. A step of folding the heat-shrinkable film in half at the back, sandwiching the textile product between the folded heat-shrinkable film, and then sealing the three open ends of the folded heat-shrinkable film other than the back, thereby enveloping the entire textile product with the heat-shrinkable film. b) A step of sealing one open end of the tube made of the heat-shrinkable film to house the textile product inside the bag-shaped body, and then sealing the open end of the heat-shrinkable film to encase the entire textile product in the heat-shrinkable film.

2. The tie-dyeing method according to claim 1, wherein the textile product is a polyester textile product, and the textile product is dyed by immersing it in a dyeing solution by utilizing a dyeing tank or a circulating dyeing solution of a dyeing machine.

3. 3. The tie-dyeing method according to claim 1, wherein the dyeing solution is a dyeing solution prepared using a disperse dye containing two or more kinds of dyes and having an adjusted hue.

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