JP3262875B2 - Manufacturing method of tea-dyed fiber products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention has a unique color tone with a natural feeling, can obtain various color tones, has good dyeing properties, has high color fastness, and has antibacterial properties. The present invention relates to a method for producing a tea-dyed fiber product.

[0002]

2. Description of the Related Art Tea has long been used as a medicinal herb, but on the other hand, it has been deeply involved in the Japanese food culture to form a tea culture. In recent years, with the diversification of social life in Japan, the separation of young people's tea has begun, and although the taste has strongly increased the demand for fermented tea such as oolong tea (blue tea) and black tea, the foundation of Japanese food culture is still It can be said that it is in Japanese tea. In recent years, research on the components and medicinal properties of tea has been actively conducted, and interest in tea has been increasing from a chemical point of view. Antioxidant tea has been produced in some parts, and it is said that the tea has an antiaging effect.

In today's growing natural consciousness,
Plant dyeing is being re-evaluated. An extremely large number of plants are available for plant dyeing, one of which is tea dyeing. In particular, Shizuoka Prefecture is Japan's largest tea producer and the greenery of Noyama is always visible, so its green color is an attractive color for dyeing.

Japanese Patent Application Laid-Open No. Sho 58-115178 discloses a tea dyeing method using a tea extract among plant dyes. A method of dyeing tea by drawing a liquor on a dough and then drawing a mordant thereon is shown.

JP-A-3-19985 discloses that an extract obtained by immersing goishi tea in water is applied to a cloth to be dyed with a brush, dried, immersed in an aqueous acetic acid solution, and maintained at a temperature within 100 ° C. After drying, immersed in an aqueous solution of a metal salt, kept at a temperature of 50-60 ° C., left for about 30 minutes, washed with water and steamed at a temperature within 100 ° C. for about 25 minutes in a drying room. The method of dyeing with tea is shown.

[0006]

Tea leaves are fermented (oxidized) by an oxidizing enzyme (polyphenol oxidase) of the tea itself, and fermentation occurs immediately immediately after flowering,
Causes internal changes and turns brown. for that reason,
Conventionally, tea dyeing has been considered extremely difficult, and almost brown dyeing, that is, the oxidized color of tea tannin (catechin) has been regarded as tea dyeing.

The method of dyeing tea disclosed in Japanese Patent Application Laid-Open No. 58-115178 is a method in which a tea extract is applied onto a dough and then a mordant is applied thereon. However, there is a limit that it is essentially the same as conventional tea dyeing.

The dyeing method using goishi tea disclosed in Japanese Patent Application Laid-Open No. 3-19985 discloses a method in which an extract of goishi tea is applied to a cloth to be dyed, treated with an aqueous acetic acid solution, dried, and then immersed in an aqueous metal salt solution. And JP-A-58-11517 mentioned above.
The method employs a method that is not much different from the method of dyeing tea disclosed in Japanese Patent Publication No. 8 (Japanese Unexamined Patent Publication No. 8), and has a limit that it is essentially the same as the conventional method of dyeing tea.

Under the above-mentioned circumstances, the present invention has a unique color tone with a natural feeling, and is capable of obtaining various color tones. Further, the present invention has good dyeing properties, high dyeing fastness, and It is an object of the present invention to provide a method for producing a tea-dyed fiber product having antibacterial properties.

[0010]

According to a first method for producing a tea-dyed fiber product of the present invention, the fiber product is subjected to a cationization treatment by contacting the fiber product with a pretreatment liquid containing a cationizing agent, and then, if necessary, tannin. The tannic acid treatment is carried out by contacting with a treatment solution containing an acid, and then the dyeing reaction is carried out by contacting with a dyeing solution containing a tea extract.

In a second method for producing a tea-dyed fiber product of the present invention, the fiber product is subjected to a cationization treatment by contacting the fiber product with a pretreatment solution containing a cationizing agent, and then, if necessary, a treatment solution containing tannic acid. The tannic acid treatment is performed by contacting the tannic acid, followed by contact with a mordant solution containing a mordant, and then the textile product after mordant is contacted with a dye solution containing a tea extract to carry out a dyeing reaction.

In a third method for producing a tea-dyed fiber product of the present invention, the fiber product is subjected to cationization treatment by contacting the fiber product with a pretreatment solution containing a cationizing agent, and then, if necessary, a treatment solution containing tannic acid. The mordanting-dyeing solution containing the mordant and the tea extract is then brought into contact with the tannic acid treatment to carry out the mordanting reaction and the dyeing reaction simultaneously.

Hereinafter, the present invention will be described in detail.

The fiber products in the present invention include fibrils, yarns, piles, cotton-like materials, woven fabrics, knitted fabrics, nonwoven fabrics, flocking fabrics and the like. In addition, paper products, wood products, and the like are also included in the fiber products referred to in the present invention.

The material of these textile products is cotton, hemp,
Natural fibers such as silk and wool, or blends of these natural fibers and chemical fibers, mixed woven products, mixed knitted products, and the like are optional.

In the present invention, desizing, scouring, bleaching, etc. are performed as necessary, and then the textile is first cationized.
The cationization treatment is carried out by contacting with a pretreatment liquid containing the agent.

At this time, various commercially available cationizing agents can be used as the cationizing agent. The cationization treatment is usually performed in the presence of an alkali.

The bath ratio during the cationization treatment is about 10 to 100 times the weight of the fiber product, the bath temperature is about 50 to 95 ° C. (particularly about 60 to 90 ° C.), and the treatment time is about 10 minutes to 2 hours. (Especially about 20 minutes to 1.5 hours).
The cationizing agent concentration is set appropriately.

After the cationization treatment, if necessary, the tannic acid treatment can be carried out by contacting with a treatment solution containing tannic acid. The method of adding a tannic acid treatment is advantageous in terms of improvement in washing fastness and antibacterial property .

As the tannic acid used in the tannic acid treatment , a purified tannic acid may be used. However, an extract of a high tannic acid-containing natural plant containing a large amount of tannic acid such as pentaploid or gallic or a semi-purified product thereof is used. It is also preferable to use it as it is. The quintet contains about 60-75% and the gallic contains about 55-65% tannic acid. Purified tannic acid is also obtained by pulverizing the quintet or gallic extract with a mixture of ether and ethanol, adding water to the leachate, transferring the tannic acid to water, and further performing purification treatment as necessary. Therefore, it can be said that it is a natural product.

The bath ratio during tannic acid treatment is about 10 to 100 times (particularly about 20 to 60 times) the weight of the fiber product,
The bath temperature is about 50 to 95 ° C (particularly about 60 to 90 ° C), the treatment time is about 10 minutes to 2 hours (particularly about 20 minutes to 1.5 hours), and the tannic acid concentration is 5 to 5% of the weight of the textile. 20
It is often about the weight%, but is not necessarily limited to this range.

After the tannic acid treatment, 0.2 to 1 of tartarite (antimony potassium tartrate) is added to fix tannic acid.
Although it can be brought into contact with a solution of about 0% by weight (based on the weight of the fiber product), fixation of tannic acid can be achieved by the mordant step when the mordant step is provided as the next step. The step of fixing the acid can be omitted .

Subsequently, of the following three methodseither
Reaction (or mordant reaction and dyeing reaction)Sa
It is.  (1) The dyeing reaction containing the tea extract
You. (2) After contact with the mordant solution containing the mordant,
The textile product is brought into contact with a dye liquor containing tea extract to
Let (3) Mordant containing mordant and tea extract-contact with staining solution
Then, the mordant reaction and the dyeing reaction are performed simultaneously.

In the case of the above (1), the pretreated textile is dyed by contacting it with a dye liquor containing a tea extract. Thereby, dyeing of various color tones is performed.

Tea is divided into first, second, and third teas. Among them, the first tea is carefully fed for about half a year until it is picked, so that it has the most useful ingredients, has a good green color, and is delicious. It has been. When it comes to second and third teas, their ingredients and taste are worse than the first teas.

In this case, a semi-finished product in the middle of the tea production process, that is, a product in which the fermentation is temporarily stopped by steaming immediately after tea removal to stabilize the tea tannin (catechin) is optimal for the purpose of the present invention. is there. This semi-finished product is a so-called unfermented tea.

In the extraction operation from tea, it is important to prevent oxidation of the tea, and oxidation (fermentation) occurs easily when heat is applied. Therefore, it is desirable that the tea extraction be performed at a low temperature of about normal temperature. . During the tea extraction operation, the concentration of the specific component such as catechin described above may be increased.

The bath ratio during the dyeing reaction treatment is about 10 to 100 times (particularly about 20 to 60 times) the weight of the fiber product, the bath temperature is about 50 to 95 ° C (particularly about 60 to 90 ° C), Processing time is about 20 minutes to 3 hours (especially about 30 minutes to 2 hours)
However, it is not necessarily limited to this range. The dye concentration can be selected from a wide range according to the purpose.

After completion of the dyeing step, post-treatments such as soaping and water washing are appropriately performed, followed by natural drying or hot air drying.

The mordant step (2) is an optional step.
In terms of dyeability and color fastness in the dyeing process ,
It is preferable to provide a mordant step .

Here, as the mordant, it is preferable to use plant ash (wood ash or straw ash) such as camellia ash, Sawaftagi ash, Hisakaki ash, Kunugi ash, Akaza ash, and Waseda straw ash. These plant ash contain aluminum ions as well as other metal ions and alkaline substances useful for dyeing.

In addition, aluminum salts such as aluminum acetate, aluminum sulfate, aluminum chloride, alum, calcined alum, and alum, and alumina mordants such as commercially available aluminum liquids can also be used. Further, an alkali such as calcium carbonate, sodium carbonate, calcium hydroxide and sodium hydroxide can be used together with the above-mentioned plant ash, aluminum salt and aluminum liquid.

In addition to the above mordants, iron mordants (iron salts such as iron acetate, ferrous sulfate, iron nitrate, and ferrous acetate), copper mordants (copper salts), tin mordants (tin salts), and chromium mordants (Chromium salt), cobalt mordant (cobalt salt) and the like can also be used.

The bath ratio at the time of mordant is 10 to the weight of the textile.
The bath temperature is usually from room temperature to boiling temperature, and the treatment time is often about 10 minutes to 1 hour, but is not necessarily limited to this range.

[0035] After contacting the reaction with the mordant solution containing mordant in (2), although by staining reaction by contacting with liquor containing a tea extract, as the above (3)
To, mordant containing a mordant and tea extract - contacting the staining solution
Then, the mordant reaction and the dyeing reaction may be performed simultaneously.

[0036] More performing the above steps, tea dyed textile stained with tea extract obtained.

[0037]

[Function] When a cationization treatment reaction (or mordanting) is performed prior to the dyeing reaction with the tea extract, the dyeing reaction with the tea extract is smoothly performed, and the active ingredient in the tea leaves and the fiber product Is reliably performed, a unique color tone is obtained, deep dyeing is possible, and the color fastness is extremely high.

The dyeing with the tea extract provides an excellent UV-cutting effect , and the UV-cutting rate is as high as 90% or more based on the material before dyeing.

In addition, this tea-dyed fiber product was found to have excellent antibacterial properties. This is due to the antibacterial action of the tea extract (or tannic acid) adhered to the textile. Since this antibacterial action is a bacteriostatic action that does not affect the ecosystem of the human body, it can also be used medicinally for a human body having a skin disease or itching.

Accordingly, the dyed fiber product of the present invention is used in contact with the skin, for example, underwear, pantyhose, brassiere, shirts, nightwear, sheets, gloves, hats, sports supporters, swimwear, bandages, and the sick. It is particularly useful for clothing, masks, footwear interior or surface materials, watch bands, socks and the like. Also, since it has fashionability, there is no problem even in applications that do not directly contact the skin.

[0041]

The present invention will be further described with reference to the following examples. Hereinafter, "%" is% by weight.

<Manufacture of tea-dyed cotton fabric>1 <Preparation of tea extract>  100 g of deep brown tea and 9 g of soda ash in 2000 ml of tap water
, And suspended for 5 minutes.
For 1 minute, then filtered, and the tea leaf extract 1600-17
00 ml (pH 8.4-8.6) were obtained.

[0043]<Preliminary treatment of cotton fabric>  100 g of cotton fabric in 5000 ml of tap water (bath ratio 1:50)
To the solution and add the cationizing agent (
Company-made "uk" 500 ml (uk 100 g / liter)
And infiltrate for 5 minutes at room temperature, then take about 30 minutes
The mixture was slowly heated to about 80 ° C. Then NaOH75
g (NaOH 15 g / liter), 3/1
0, then 7/10, and heated for about 1 hour. Next, cotton
Take out the ground and wash with water. Add 25 ml of acetic acid (5 ml of acetic acid)
Per liter) to neutralize and soak at 40 ° C for 5 minutes.
I let you. Finally, it was washed with water and dehydrated to obtain a cation-treated cloth.

[0044]<Mordant-dyeing reaction>  Dissolve 5 g (5%) of aluminum solution for cotton in 10 times water,
1600 of the tea leaf extract (100 g) prepared above
~ 1700 ml, and then tap water to add about 8 liters.
Torr. 100 g of the above-mentioned cation-treated cloth was added to this solution.
And then heated and reacted at 85 ° C. for 1 hour.
Thereafter, it was washed with water (using a neutral detergent) and dried. The resulting dye
The cloth had a beautiful mustard color tone.

[0045]<Antibacterial test>  New antibacterial activity using the above dyed cotton cloth section (2cm x 2cm)
Evaluation method (antibacterial and antifungal,16, 2, 49-57 (198).
8) When an antibacterial activity test was performed according to
-Trient broth, nutrient agar, test
Bacteria: Escherichia coli ATCC 25922, Staphylococcus a
ureus ATCC 25923).
Thus, clear antibacterial properties were observed. The resultTable 1Shown in

[0046]

[Table 1]  S. aureus ATCC 25923 E. coli ATCC 25922  Initial number of bacteria: 1.90 × 10 ^Five  Initial number of bacteria: 2.00 × 10 ^Five  Viable cell count activity (%) Viable cell count activity (%)SA CA SA CA Control 5.93 × 10⁶ --2.36 × 10⁸ --Cation treatment 0 100 1.20 × 10 ^Five 40.0 (Note) The unit of the initial bacterial count and viable bacterial count is cells / g (cloth). CA is sterile, SA is bacteriostatic.

Example2  Dissolve 10 g (10%) of cobalt chloride in 10 times water,
Example with this liquid1Tea leaf extract (100g) 16
Add 00 to 1700 ml, and then add tap water for about 8
Liters. Example with this liquid1Cations in
100 g of treated cloth is put into it and heated, then at 85 ° C for 1 hour
After the heat reaction, water-based (using a neutral detergent), dry
Was. The resulting dyed cloth has a beautiful gold color tone
Was.

Example3  Dissolve 5 g (5%) of iron iron acetate in 10 times water and add
Example1Tea extract (100g) in 1600-1
Add 700ml, then tap water and add about 8 liters
And Example with this liquid1Treated cloth 1
After adding 00g, heat and react at 85 ° C for 1 hour
After that, it was made aqueous (using a neutral detergent) and dried. Obtained
The dyed cloth had a beautiful chestnut color tone.

Example4  Dissolve 10 g (10%) of calli alum in 10 times water
And the solution1Tea leaf extract (100g)
Add 1600-1700 ml, then add tap water
It was about 8 liters. Example with this liquid1Ticks in
After putting 100 g of the on-treated cloth, heat the mixture,
After reacting by heating for an hour, water-based (using a neutral detergent) and dried
did. The resulting dyed fabric has a beautiful khaki color tone
I was

Example5  Dissolve 10 g of tannic acid in 4000 ml of water to prepare a treatment solution.
Manufactured in this processing solution1After cationization
Add the cloth and warm to about 85 ℃, then stir for about 1 hour
Treatment, then let it cool naturally, leave it overnight, wash it with water and dehydrate it.
went.

Using the cationized-tannic acid-treated cloth, a mordant-dyeing reaction was carried out in the same manner as in Example 1 below. The dyed fabric obtained had a beautiful color tone and excellent washing fastness.

[0052]

According to the present invention, it is possible to obtain a unique color tone with a natural feeling and to obtain a variety of color tones, furthermore, it has good dyeing properties, high dyeing fastness, and antibacterial properties. A tea-dyed fiber product can be obtained.

Therefore, the dyed textile product obtained by the method of the present invention can completely meet the natural and health consciousness of consumers.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI D06P 3/14 D06P 3/14 3/24 3/24 3/60 3/60 (56) References JP-A-49-48981 ( JP, A) JP-A-58-115178 (JP, A) JP-A-3-19985 (JP, A) JP-A-5-148774 (JP, A) JP-A-1-1244691 (JP, A) JP JP-A-5-148773 (JP, A) JP-A-4-257377 (JP, A) JP-A-4-281079 (JP, A) “Chemical Dictionary 7 (Vol. 7)” (Showa 36.10.30. Kyoritsu Shuppan Publishing Co., Ltd.) Page 16 “Badsen (Mordant)” (58) Fields investigated (Int.Cl. ⁷ , DB name) D06P 5/00 C09B 61/00 D06P 1/34 D06P 3/14 D06P 3 / 24 D06P 3/60

Claims (3)

(57) [Claims] Claims: 1. A textile product is subjected to a cationization treatment by contacting with a pretreatment liquid containing a cationizing agent, and then, if necessary, a tannic acid treatment by contacting with a treatment liquid containing tannic acid. A method for producing a tea-dyed fiber product, wherein the dyeing reaction is carried out by contacting with a dyeing solution containing the same. 2. A fiber product is subjected to a cationization treatment by contacting it with a pretreatment liquid containing a cationizing agent, followed by a treatment with tannic acid if necessary, followed by tannic acid treatment, and then a mordant containing a mordant. A method for producing a tea-dyed fiber product, which comprises contacting the mordanted fiber product with a liquor and then contacting the mordanted fiber product with a dye liquor containing a tea extract to cause a dyeing reaction. 3. A fiber product is contacted with a pretreatment liquid containing a cationizing agent to carry out cationization treatment, and then, if necessary, is contacted with a treatment liquid containing tannic acid to carry out tannic acid treatment. A method for producing a tea-dyed fiber product, wherein a mordant reaction and a dyeing reaction are carried out simultaneously by contacting with a mordant-dyeing solution containing an extract.