JPH0364569A - Tool for dyeing fiber - Google Patents

Abstract

PURPOSE:To provide a dyeing tool capable of preventing the generation of ions eluted by a dyeing treating solution to regenerate the original color tone of the dyeing solution on an article to be dyed, by making at least the dyeing solution-contacting portion of the tool with titanium or an alloy thereof. CONSTITUTION:In a filtration net basket for separating a dyed material from a dyeing solution, a fiber-delivering tool for dyeing fibers, dyeing tool having a bottom-closing inclined wall around the bottom portion thereof or a top-closing inclined wall toward an opening and having a flange at or near the opening, the main body of the dyeing container is made of preferably a titanium clad material and simultaneously the surface portion of the container contacting with the dyeing treating solution is composed of titanium or an alloy thereof.

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention is applicable to the dyeing of whirlpool containers (dyeing containers), thread reeling tools, mesh baskets for dyeing solution filtration, etc. used when dyeing fibers such as yarn and cloth. It's about equipment.

<Prior art and its problems> In general, when dyeing fibers such as yarn or cloth with natural or chemically synthesized pigments collected from plants, animals, minerals, etc., how do you dye the yarn or cloth with their original colors? The key point of technology is how to reproduce the dye, and the quality of the raw materials such as plants, animals, and minerals, the water quality and temperature of the dyeing liquid, the type of mordant, and the type of dyeing tools have a significant impact on the dyeing condition. It is something to give.

For example, in the case of vegetable dyeing, a dyeing container is used for the process of extracting pigments from the roots, stems, wood, skin, fruit, or leaves of plants (extraction process), and applying the resulting dyeing solution to threads, cloth, etc. The fibers are soaked in a mordant solution (dipping step: in some cases, a pre-mordanting step is taken before the dipping step, in which the fibers are immersed in a mordant solution). It is an important dyeing tool that is used throughout the entire process, such as the process of soaking the fibers in a dye that develops and fixes the dye attached to the fibers (mordanting process). Such demands are being made.

Tal Extraction process The extraction process is generally a process in which the raw material plant is boiled together with water to extract the pigment (the resulting dye liquor has a pH of about 3, which is weakly acidic, and a pH of about 12, which is weakly alkaline). It is heated directly on the stove or in the oven. In this process, it is required to extract the pigments contained in the raw material plants as pure as possible and with their original bright colors intact.

In order to effectively extract pure pigment, ``the temperature of the liquid in the container must be kept as uniform as possible to reach a predetermined level.''
It is necessary to "stir the raw material plant and apply physical force", and for this purpose, it is desirable that the raw material plant and boiling liquid circulate throughout the entire area inside the container, and on the other hand, it is necessary to In order to make the color naturally present in the raw material plants, it is necessary to select a container material that does not dissolve metal ions that affect the color.

(bl) Soaking process The dipping process is a process in which the dye solution obtained by filtering the residue of the raw material plants from which the pigment has been extracted is adjusted to a predetermined temperature (room temperature to 90°C), and the fibers such as yarn or cloth are immersed and dyed (dying, (drying is repeated, and this process may be repeated several thousand times).
Similar to the extraction process, it is necessary that metal ions etc. do not elute from the container.

(C1 mordant process The mordant process is carried out at room temperature with a mordant solution (aluminum mordant such as aluminum acetate aluminum chloride 11 alum, alkaline mordant such as wood ash 9M ash, potassium carbonate, quicklime, rice vinegar, plum vinegar, citric acid, acetic acid).

Acid mordants such as oxalic acid, iron wood acetate, ferrous chloride.

Fibers such as yarn or cloth are immersed in an aqueous solution containing iron mordant such as Ohaguro, tin mordant, chromium mordant, the same mordant, etc. in an amount of 0.2 to 20% of the weight of the dyed yarn or cloth to develop the dye. This is a fixing process, but it is necessary that the container is not corroded by the mordant.

As described above, a dyeing container for dyeing fibers is required to have a material that does not undergo a chemical reaction with the dye liquor (dye) and has excellent corrosion resistance against mordants. This was not limited to dyeing containers, but was common to dyeing tools in general, such as "thread reeling tools" used for dyeing threads and "filtering net baskets" for filtering dye liquor.

Therefore, the materials used for these dyeing tools have conventionally been stainless steel mesh, enameled material, or aluminum.

However, if we take dyeing containers as an example, there are no specialized containers (pans) for tentacle dyeing enthusiasts on the market, so large commercial kitchen utensils are often used. be. Figure 1 shows typical examples of the shapes of such dyeing containers; Figure 1 (a
) types are often seen in molded products of stainless steel sheets or enameled molded steel sheets;

However, the material of dyeing tools such as containers used in the dyeing process has an important effect on the "color" obtained by dyeing, and even if the above-mentioned materials are used, the color may be slightly different from the intended color. In many cases, the “color” did not appear clearly.

For example, with stainless steel dyeing tools, the elution of iron, albeit in a small amount, is unavoidable, and especially when using red dyeing raw materials such as madder, this may inhibit the hue of the pure pigment originally contained in the raw material. There is a problem that tannins, which are difficult to dye and cannot be exposed as they are, are fixed by the iron first, causing the color to darken instead of becoming bright red.In addition, as a mordant, alum and acetic acid and two rice vinegar are used. However, when using citric acid, oxalic acid, etc., corrosion tends to occur.

In addition, enameled products have the problem that the soda glass that makes up the enamel layer is weak and easily attacked by acids and alkalis, and is also susceptible to "shocks" and "scratches."
There was a drawback that if a flaw that reached the base metal was formed in an invisible place, it would have a negative effect on the color tone and dyeing progress of the iron-potassium container.

In addition, aluminum products are easily corroded by acids and alkalis, and because they are soft materials, they tend to have scratches on the surface, and the attached dye is difficult to remove, making it time-consuming to wash them after use. there were.

<Means for solving the problems> Therefore, the present inventors have solved the above-mentioned problems pointed out in conventional fiber dyeing tools, and have developed a method to directly express the original dyed color of dyeing materials such as plants. As a result of intensive research to provide dyeing tools that are easy to clean, durable, and easy to handle, we have developed a new line of dyeing tools (pots and other containers, If the parts that come into contact with the processing liquid (such as thread pulling tools, thread rods, filter cages, etc.) are made of materials such as aluminum, stainless steel, or enamel, avoid ions that may adversely affect dyeing from these parts. It is not possible to completely suppress elution, and it is difficult to do anything about the erosion of dyeing tools caused by ion elution, but if the above-mentioned "contact part with the processing liquid" is made of titanium or titanium alloy, titanium is highly In addition to exhibiting extremely high chemical stability against various dyeing raw materials and mordant materials due to its hard corrosion properties, it is thought that the problem of compatibility between each treatment solution and titanium also has an effect; The colors obtained by the dyeing used are bright and clear, making it possible for the first time to reproduce the mythical ancient color known as "Asuka no Age," and the tools themselves are easy to handle. (
They found that it is lightweight and has good cleanliness), and also exhibits excellent durability.''

This invention was made based on the findings mentioned in section 2 above, and is characterized by ``a textile dyeing tool in which at least the part that comes in contact with the dyeing treatment liquid is made of titanium or a titanium alloy.'' be.

Here, the fiber dyeing tools are the extraction process,
It is a general term for equipment used in the immersion process or mordant process, etc., which is forced to come into contact with the processing liquid.Specifically, it refers to the processing equipment such as pots and pots as shown in Figure 1. A liquid storage container, a thread reeling tool as exemplified by reference numeral 1 in FIG. (It may take the form of a wooden rod or pipe, etc.), a filtering mesh basket as exemplified by reference numeral 4 in FIG. 4, and the like.

In addition, as titanium or titanium alloy, Ti-0 is a side food type.
, 15Pd alloy, Tj-0,3Mo-0,8Ni alloy, as well as high-strength types such as Ti-6Af-4V alloy, etc., may be adopted, but practically, it is preferable to use a high-strength type such as Ti-6Af-4V alloy. It is appropriate to use pure titanium.

Although the dyeing tool according to the present invention exhibits sufficient effects regardless of the type of dyeing, it is especially effective when applied to vegetable dyes, especially those that produce red dyes made from madder, etc. Excellent effects can be obtained without

It is preferable that the dyeing tool is made of titanium or a titanium alloy alone, but in consideration of economy, it may be made of a crund material of titanium or a titanium alloy and another metal material. In this case, there are no particular restrictions on the other metal material used to clamp the titanium, as long as it has appropriate heat resistance and water corrosion resistance, and has adhesion to titanium. Of course, it goes without saying that it is necessary to position the titanium or titanium alloy layer in the portion that comes into contact with the processing liquid. However, for example, when the dyeing container is made of titanium clad thin plate, it is sufficient that the inner surface of the container that comes into contact with the dye liquid is coated with titanium, and a single-sided titanium clad plate is sufficient.

1 〇- In addition, when the dyeing container is made of titanium or titanium clad thin plate, the thickness of the plate is determined from the viewpoint of strength and rigidity of the container, but if the capacity is 20 to 30j2 class, the thickness is 1 to 2 m. Thick enough.

Hereinafter, the effects of the dyeing tool according to the present invention will be summarized, although some of them have been mentioned above.

<Function> One of the characteristics of the dyeing tool according to the present invention is that titanium or a titanium alloy is used as a constituent material, and its excellent corrosion resistance is utilized. In other words, by using titanium or a titanium alloy in the part that comes into contact with the treatment solution, the elution of "metal and other ions harmful to the dye" into the dye solution during the extraction or dipping process is minimized, and it is possible to (This effect is thought to be due to the excellent corrosion resistance of titanium or titanium alloys, but the compatibility between titanium and pigments also has an effect.) (It's not inconceivable.)

Corrosion caused by mordants is also completely prevented.

Incidentally, although the limit of the permissible amount of ions is not yet clear, staining is extremely delicately influenced by the presence of ions.

In principle, when a metal is placed in a liquid, elution of ions will definitely occur, although the order of magnitude is different.

However, in the case of titanium, the elution of these ions is extremely suppressed (in fact, it is almost completely anti-corrosion), and because of the compatibility of titanium ions, even when titanium comes into contact with the dyeing solution, the color does not change. As a result of experimental studies, it has become clear that there is no such thing.

Furthermore, this is especially true when the tool is made of titanium or a titanium alloy alone, and the tool also has the added advantage of being lightweight. In other words, titanium or titanium alloy has a high strength per unit weight, and as a result, compared to conventional tools made of stainless steel, enameled material, aluminum, etc., it is possible to manufacture tools with the same strength that are lighter. It is.

Furthermore, the 1 2 oxide film (passive film) formed on the surface of titanium or titanium alloys is very dense, unlike aluminum, etc., so it has little compatibility with dyeing solutions, and therefore Another feature that cannot be overlooked is that it is extremely easy to clean.

<Other Embodiments> By the way, among several dyeing tools, the dyeing container such as a pot or a pot has the greatest influence on dyeing workability, dyed color, etc. As mentioned above, the material affects the color tone, etc., but when considering the occurrence of color unevenness and workability, the shape of the container also becomes an important influencing factor that cannot be ignored.

However, through research conducted by the present inventors, it has been found that the conventional container shapes as shown in FIG.

First, the flat-bottomed cylindrical container shown in FIG. 1(a) has the following two drawbacks.

■ Since there is no flange like the lid-shaped container shown in Figure 1 (bl), when heating, the container 5 must be placed directly on the gas stove 6 as shown in Figure 5 (a). Therefore, during heating, only the bottom 7 of the container is heated;
Since heat is radiated from the side wall 8, thermal efficiency is poor.

(2) Since the bottom shape is completely flat, the corners are left out from convection circulation, making it difficult to maintain a uniform temperature throughout the container, and because the side wall 8 is vertical, boiling over is likely to occur during boiling.

On the other hand, since the lid-shaped container shown in FIG. 1(b) has a supporting flange, if a furnace-shaped heating furnace 9 is used as shown in FIG. 5(b), the flange 11 of the container 10 It is possible to heat the lower side wall 12 and the bottom 13 relatively evenly, thus providing excellent thermal efficiency, and the side wall 14 above the flange 11 has a shape that tapers slightly toward the opening. This makes it difficult for boiling over to occur in boiling conditions. As described above, the pot, which has been used as a kitchen utensil for a long time, also has several excellent functions as a dyeing container.

However, most of these pot-shaped containers are cast products due to their complicated shapes, and not only do they require a large number of man-hours to manufacture, but due to casting technology, they cannot be manufactured with very thin walls. In terms of strength, it is necessary to manufacture it with a certain degree of thickness. Therefore, even if cast aluminum is used for dyeing products that require this type of container, where most of the work is done manually, the container will be quite heavy, and this will inevitably be a major disadvantage in terms of work.

Therefore, in order to eliminate the problems seen in the conventional containers, the dyeing container according to the present invention is manufactured from a titanium or titanium alloy thin plate, or a titanium or titanium alloy clad thin plate, and has a tapered bottom shape around the bottom. A shape that has an inclined wall and a flange (preferably a full-circumference flange) at or near the opening, or, if necessary, a shape that further has an inclined wall near the opening that tapers toward the opening. It is preferable that

The reason why the dyeing container is provided with the above-mentioned "slanted wall that tapers toward the bottom" is based on the following two purposes.

The first is to generate convection circulation throughout the container during the heating stage of the extraction process, and to efficiently extract the dye by "uniforming the temperature of the dye solution" and "stirring". That is, by forming the bottom into a tapered shape, convection from the bottom to the side walls becomes smooth.

Furthermore, since both the bottom surface and the inclined wall serve as heat transfer surfaces for heating from below, the effect of increasing the heat transfer area can also be obtained.

The second purpose is to prevent the bundled threads from spreading and becoming entangled at the bottom of the container during the dipping process when dyeing the threads. In other words, by forming the thread into a tapered shape, the inclined surface serves to guide the thread bundle, thereby stabilizing its posture in the dye solution.

FIG. 6 shows an example of the preferred shape of the dyeing container.

The dyeing container 15 shown in FIG. 6 is composed of a flange 15a, a body portion 15b, an inclined wall 15c, and a bottom portion 15d. Here, the flange 15a serves as a supporting part when the heating method shown in FIG.

5. According to experiments conducted by the present inventors regarding convection circulation, it has been found that good results can be obtained when the inclination θ of the inclined wall 15c is set to 45° or more, preferably around 60°. Moreover, in addition to this, the diameter ratio (d
It has also been found that when the ratio x/dt) is set to 0.5 to 0.6, convective circulation throughout the interior of the container is performed more smoothly.

In order to ensure stability when the container 15 is placed on the floor, the bottom portion 15d is preferably flat or slightly concave when viewed from the bottom as shown in FIG.

Moreover, FIG. 7 shows another example of a preferable shape of the dyeing container.

In this example, an inclined wall 15e that tapers toward the opening is provided between the flange 15a and the body 15b. The inclined wall 15e is for preventing boiling over during boiling in the extraction process.

Incidentally, the slope ψ of this inclined wall 15e is suitably 10 to 20 degrees, and if the height l is 30 to 50 inches, boiling over can be effectively prevented.

6 FIG. 8 shows yet another preferred shape of the dyeing container.

The dyeing container shown in FIG. 8 consists of a main body 17 and a hood 18.
It has a piece structure, and the hood 18 is removable. The main body 17 is almost the same as the container 15 shown in FIG. 6, but a stepped portion 17e is provided on the body 17b so that the position of the hood 18 when inserted into the body 17b can be fixed.

On the other hand, the hood 18 is composed of an inclined wall 18a and a body 18b. This inclined wall 18a is provided for the purpose of preventing boiling over, similar to the inclined wall 15e of the container shown in FIG. The body 18b is inserted into the body 17b of the main body 17. In addition, main body 1
7 can be made of a titanium clad material with a titanium surface on the inner surface, similar to the container shown in FIG. 6 or FIG. is desirable.

Furthermore, FIG. 9 shows an example of a preferred shape of the dyeing container other than the above-mentioned shape.

The dyeing container shown in FIG. 9 is of a type in which a flange 19 is fixed to a body 20a of a wooden body 20 by welding, riveting, or the like. Of course, the upper inclined wall 20f is provided for the purpose of preventing boiling over.

Next, the present invention will be specifically explained with reference to Examples.

<Examples> Example 1 A container having a shape as shown in FIG. 6 was produced by press deep drawing using a JIS Class 1 pure titanium thin plate having a thickness of 1.5 m. The dimensions of each part of the container are indicated by the symbols in Figure 6: d = 360fi, dz = 2001㎽,
θ=60°, H=28011, and the processing liquid capacity is 2
It was possible up to 0n.

Next, the above container was used in the extraction step of boiling the madder root to extract the pigment, and when heated using the furnace-shaped heating furnace shown in Figure 5(b), active convection circulation occurred and the pigment was extracted.
Good extraction results were obtained in 0 minutes.

As a comparison, the conventional figure 1 (not shown in al, shape 5)
We tried to extract the pigment from the madder root by using a US304 container and heating it on a gas stove as shown in Figure 5+al. Regular stirring is required to promote
Moreover, it was confirmed that extraction took about 150 minutes due to poor thermal efficiency.

Subsequently, 1. Madder roots were removed from the extracted dye solution, and silk yarn was dip-dyed while adjusting the dyeing temperature of the remaining dye solution.

In this process, when the container according to the present invention made of a thin titanium plate is used, the bundled silk threads do not spread at the bottom of the container, preventing threads from getting tangled, and ensuring good workability. After dyeing, the color was prevented from adhering to other pigments, which was the case when conventional containers made of 5US304 were used, and as a result, the color did not darken.

Next, when the dyed silk thread was mordanted with potassium carbonate in the same titanium container, it was possible to achieve the bright, vivid color that is typical of madder. Further, no corrosion of the container occurred during the mordanting process.

90 Example 2 Using containers made of pure titanium, 18-8 stainless steel, and pure aluminum, having the same shape and dimensions as in Example 1, ancient madder dyeing was carried out in the next step.

[Dyeing process ■ Wash 2 kg of madder root.

■ Cut the washed madder root into 1 cm-sized pieces and expose them to water purified with charcoal (charcoal water).

■ The roots are exposed to charcoal water, parboiled, and fermented from the steamed state.

■ When mold begins to appear and becomes slimy due to fermentation bacteria, take it out and wash it with water.

■ If the fibers break when pounded with a mortar and pestle, it's 207! Soak for a while in charcoal water.

■ Make the infusion in a place where the water and dye feel like one.

) After boiling in a container for 2 hours, filter the liquid and use it as a dye solution (use a pure titanium mesh basket for filtration).

ii) Pour charcoal water at 20°C into the filtered residue again and boil it for 2 hours, then filter it again and add it to the dye liquor.

■ Adjust the temperature of the above dye solution at each stage between room temperature and 90°C, and turn 1 kg of the silk thread of the material to be dyed using a Ti thread reel and a thread reel, and then uniformly adjust the temperature at each temperature stage for about 15 minutes. After soaking for a minute, when the liquid temperature is 70°C, add acid to adjust the pH.
Adjust to 4.5 and dye. Then, it is washed with hot water at 80°C to remove excess dyed tannins, etc., and then hung on a spinning rod to air dry to allow it to adjust to the pH in the air, thereby performing the second dyeing stabilization.

Repeat this process several to dozens of times.

■ 2g/l of thread after the previous process! Dip in alum solution to fix the dye and dry.

Table 1 shows the dyeing results obtained in the above dyeing process.

(Margin below) 1 2 Table 1 As is clear from the results shown in Table 1, the dyeing results clearly differ depending on the material of the container/vessel (pot) used, and it was difficult to dye the dyed material in ancient times, which was difficult to do with containers made of conventional materials. It can be seen that it is possible to reproduce madder dyeing by using a titanium container.

Furthermore, the reproduction of the ancient color Asuka no Hi was a matter of great desire among dyers, and the above results can be said to be groundbreaking.

Example 3 Container shape: 30 QmmlfiX 300*w+
A cylindrical pot with the same shape as the height is made of pure aluminum, hollowed iron surface, 5US304 stainless steel and JI
Manufactured from SI grade pure titanium. Separately, a corrosion test piece of 1.5 mm thick x 10 mm wide x 40 H long made of the same material as above was also manufactured.

In addition, the pot is used for comparison of color when actually dyeing plants, and the corrosion test piece is immersed in a mordant solution containing various mordants and subjected to a test to determine chemical stability by measuring the amount of eluted ions. It is for.

Next, a Seito color test was conducted using pots made of various materials under the same dyeing conditions and steps, and the resulting colors were simply compared. The dyeing process at this time is as follows.

■ Put 2 kg of madder root in 2 Off water, boil for 30 minutes, and collect the liquid.

(1) Using 1 kg of silk thread as the object to be dyed, use a pure titanium thread reel and thread reel to immerse it evenly in a pouring solution at approximately 80°C for 15 minutes, and then dry.

■Furthermore, repeat the process of soaking in the madder root broth and drying it four times.

■ After drying, add 50g of aluminum acetate to 103ml of water. 4 Immerse it in a mordant solution dissolved in No. 1 and dry it again.

Table 2 shows a comparison of the colors of the threads dyed in this way.

As shown in Table 2, there are many different types, and the solution in which they are dissolved has a pH of
In Examples 3 to 12, since the solutions are used in the range of room temperature to 90°C, the test pieces were immersed for 100 hours under solution conditions in this range, and then the amount of ions eluted into the solutions was measured by atomic absorption spectrometry. Note that the pH of the solution was adjusted using citric acid and wood ash.

The results obtained were as shown in Table 3.

Table 3 From the results shown in Table 2 above, the dyeing tool (dyeing container) according to the present invention does not have a negative effect on the color and does not emit ions, so the dye plant retains its original color. It can be confirmed that the dye can be extracted and dyed.

Next, the chemical stability against various mordants was compared using corrosion test pieces.

This comparative test was conducted as follows.

That is, first, pure aluminum and iron were used as test shrines.

Stainless steel (SUS 304) and pure titanium were used.

As a mordant, it was mentioned in the previous section "(C) Mordant process". is large, indicating that iron has a much larger amount of eluted ions than other materials in all pH and temperature ranges. Furthermore, although the amount of ion elution from stainless steel is smaller than that from pure aluminum or iron, ion elution is observed in any temperature and pH range. On the other hand, compared to these materials, pure titanium shows no ion elution at all in any temperature/pH range, and it is clear from this that titanium is completely stable even when various mordants are used.

<Summary of Effects> As explained above, according to the present invention, it is easy to directly express the dyed color originally possessed by the dyeing raw material on the dyed object (fiber), and it is perfect in terms of handling and durability. This brings about extremely useful effects industrially, such as being able to provide dyeing tools that were previously unavailable, and making it possible to stably reproduce excellent ancient colors.

[Brief explanation of drawings]

Figure 1 shows a typical shape example of a conventional dyeing container.
Figure (al) shows a flat-bottomed cylindrical pot, and Figure 1 (b) shows a lid-shaped pot. Figure 2 is a conceptual diagram illustrating an example of a thread reel for dyeing. Figure 3 FIG. 4 is a conceptual diagram illustrating another example of a thread reel for dyeing. FIG. 4 is a conceptual diagram illustrating an example of a filter mesh corner used in the dyeing process. FIG. This explains the heating form, and the fifth
Figure Ta) shows the heating form of a flat-bottomed cylindrical pot, and Figure 5 (
b) shows the heating form of a lid-shaped pot, respectively. FIG. 6 is a schematic diagram showing an example of a preferred shape of the dyeing container. FIG. 7 is a schematic diagram showing another example of the preferred shape of the dyeing container. FIG. 8 is a schematic diagram showing yet another example of the preferred shape of the dyeing container. FIG. 9 is a schematic diagram showing 78 examples of preferred shapes of dyeing containers other than those described above. In the drawings, l... Thread reel, 2... Thread, 3... Hook,
4...filtration mesh basket, 5.10...
・Container, 6... Gas stove, 7.13...
Bottom of container, 8.12.14... Side wall, 9... Furnace-shaped heating furnace, 11... Flange, 15... Dyeing container, 15a, 17a, 19... Flange,
15b, 17b, 18b, 20a・=body, 15
c, 15e, 17c, 18a, 20c, 20
f-... Slanted wall, 15d, 17d, 20d... Bottom, 16... Liquid level, 17, 20... Main body,
18... Food.

Claims (1)

[Scope of Claims] (1) A textile dyeing tool, characterized in that at least the part that comes in contact with a dyeing treatment liquid is made of titanium or a titanium alloy. (2) The fiber dyeing tool according to claim 1, which has the form of a filtering mesh basket for separating the dyeing material and the dyeing solution. (3) The fiber dyeing tool according to claim 1, which is in the form of a thread reeling tool for dyeing thread. (4) The dyeing of fibers according to claim 1, wherein the form is a dyeing container having a bottom-shaped inclined wall around the bottom and a flange at or near the opening. Tools. (5) The dyeing tool according to claim 4, which has an inclined wall tapering toward the opening of the container. (6) The fiber according to claim 4 or 5, wherein the container body is made of a titanium clad material, and a titanium or titanium alloy layer is located on the inner surface that contacts the dyeing treatment liquid. dyeing tools.