JPH0718588A - Method for worn-out tone processing of cellulosic fiber structure - Google Patents

Abstract

PURPOSE:To provide a method for processing capable of imparting a worn-out feeling of uniform and natural sense to a cellulosic fiber structure and dyeing the cellulosic fiber structure in various color phases without fading and advance of a fading feeling in every washing. CONSTITUTION:A cellulosic fiber structure is provided with a solution containing at least one kind of dye selected from vat dye, sulfur dye, indigo dye and disperse dye, then with a treating solution containing a crosslinking resin, heat- treated and washed. Or the cellulosic fiber structure is provided with a treating solution containing at least one dye selected from vat dye, sulfur dye, indigo dye and disperse dye and further a cross-linking resin, then heat-treated and washed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of washing and bleaching a cellulosic fiber structure.

[0002]

2. Description of the Related Art Generally, it is desired that a dyed or printed product has little discoloration after repeated washing, that is, it should be dyed firmly so as not to be exposed to washing. However, in the fashion trends of young people these days, a feeling of being washed out or worn out is preferred, such as blue denim. In particular, casual pants called bleach-out denim are the twill fabric dyed with indigo dye or its sewn product that has been decolorized using a bleaching agent. Further, not only the indigo dye blue, but also color denim of various hues are washed and exposed, that is, products that feel like bleaching out are becoming more and more popular.

In order to meet such demands, conventionally, after dyeing or printing with a reactive dye and then exposing to chlorine, or dyeing or printing with a vat dye and then exposing to chlorine, there are defects. is there. That is, in the former, the chlorine fastness of the reactive dye is generally poor, so that it is difficult to control the concentration of the dyed cloth or the printing cloth, and in the latter, the chlorine fastness is too good and the bleached-out feeling is hard to appear. In any case, the bleaching process is a batch method such as winth and it takes a long time, and even the dye left unbleached because it is decolorized using a bleaching agent is affected by the bleaching agent, and the fastness is descend. Further, since sodium hypochlorite or the like is used as a bleaching agent, there is a drawback that the workability is poor due to the problem of odor.

In response to the above demands, after dyeing or printing with a pigment, a kneading process is carried out with a washer containing a ball. However, the pigment contaminates a machine stand such as a dyeing machine,
Furthermore, there is a problem in that the color fades with each wash and the color fades, which is different from the original wash sensation.

In order to solve these problems, Japanese Patent Laid-Open Publication No.
No. 9-163491 discloses a dye, an alkaline agent, a sulfinic reducing agent, and an alkaline and reducing inorganic which are water-insoluble and are dissolved and dyed on a white cloth or dyed cloth of cellulosic fibers A method has been proposed in which a dye solution containing a metal compound is padded and treated with steam without drying to obtain a dyed cloth with a wash sensation, but it cannot be applied to textiles and vat dyes are reduced. Since the dye is decomposed by the agent, the dye concentration gradually decreases, and there is a problem that tailing occurs.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems in the case of imparting a natural-looking worn-out and washed appearance to a cellulosic fiber structure. Is.

That is, according to the present invention, it is possible to easily and uniformly give a natural feeling of worn-out bleaching feeling to the cellulosic fiber structure, and the color fades and the fading feeling progresses with each washing. And a processing method that enables various hues.

[0008]

To achieve the above object, the present invention has the following constitution. That is, the first aspect of the present invention relates to a cellulosic fiber structure, a vat dye, a sulfur dye,
A treatment liquid containing at least one dye selected from indigo dyes and disperse dyes, followed by moist heat treatment, followed by washing, and then a treatment liquid containing a crosslinked resin, and heat treatment. A second aspect of the present invention is a method for washing and bleaching a cellulosic fiber structure, wherein the cellulosic fiber structure has at least one selected from vat dyes, sulfur dyes, indigo dyes, and disperse dyes. After applying a treatment liquid containing a dye, a treatment liquid containing a crosslinked resin is applied, followed by heat treatment, and a washing and exposing method of the cellulosic fiber structure, which is characterized in that it is washed, and A third aspect of the invention is the same as the second aspect of the present invention, which is the same as that of the second aspect of the present invention, in which the treatment liquid containing the dye is added first, or the treatment liquid containing the dye is applied, and then the treatment liquid containing the cross-linking resin is added. The method of washing and exposing a cellulosic fiber structure is characterized in that it includes a cutting and sewing step of cutting, sewing, or heat-treating, followed by cutting and sewing. Characterized in that a treatment liquid containing at least one dye selected from vat dyes, sulfur dyes, indigo dyes and disperse dyes and a cross-linking resin is applied to a cellulosic fiber structure, followed by heat treatment and washing. A method for washing and bleaching a cellulosic fiber structure according to the present invention, and a fifth aspect of the invention is the treatment solution according to the fourth aspect, further comprising cutting and sewing, or containing a dye and a crosslinking resin. A method of washing and exposing a cellulosic fiber structure, which comprises a cutting and sewing step of cutting and sewing after applying, or cutting and sewing after heat treatment.

The present invention will be described in detail below.

Examples of the cellulosic fibers used in the present invention include natural cellulosic fibers such as cotton and hemp, and regenerated cellulosic fibers such as rayon, cupra, polynosic and purified cellulosic fibers (trademark: Tencel). Such cellulosic fibers may be used alone or mixed with other fibers by blended spinning or interwoven knitting, and in the case of admixture, it is desirable to contain 50% by weight or more of cellulosic fibers. Examples of the fibrous structure include yarns, woven fabrics, knitted fabrics, and non-woven fabrics.

The dye used in the present invention is selected from vat dyes, sulfur dyes, indigo dyes and disperse dyes. Such dyes are used as is in the pigment base in the process according to the invention. The amount of these dyes to be used may be appropriately adjusted depending on the dyeing or printing density.

Examples of the cross-linking resin used in the present invention include reactive urethane resin, reactive silicone resin, acrylic ester emulsion resin, aminoplast resin such as melamine resin, glyoxal resin and ethylene urea resin. And as reactive urethane resin, Viplet USV (commercially available product from Bayer), Elastron MF
9 (commercially available product of Dai-ichi Kogyo Co., Ltd.), Elastron MF25 (commercially available product of Dai-ichi Kogyo Co., Ltd.), and reactive silicone resins such as Ultrex latex (commercially available product of Ciba Geigy), Lighttex 900 (commercially available product of Kyoeisha Yushi Co., Ltd.) Drypon 60
0 (commercially available from Nichika Chemical Co., Ltd.) and the like are exemplified. Such a crosslinked resin is used together with a reaction catalyst if necessary, and is used so as to adhere to the cellulosic fiber structure in an amount of 0.1 to 10% by weight, preferably 0.3 to 7% by weight.

The washing referred to in the present invention is carried out by using a jet dyeing machine, continuous wins, winks, open soapers, rotary washers, etc. The rotary washer is preferred for washing and exposing to obtain a tone effect. The processing conditions of the rotary washer are 25-45 rpm and 1: 2 bath ratio.
The range of 0 to 1: 300, the set temperature of 50 to 100 ° C., and the set time of 5 to 90 minutes are preferable. Needless to say, only a rotary washer or the like is used for cleaning (garment wash) after cutting and sewing.

Next, an embodiment of the present invention will be described. In the first method of the present invention, a treatment solution containing at least one dye selected from vat dyes, sulfur dyes, indigo dyes, and disperse dyes is added to a cellulosic fiber structure by a padding method, a spray method, or It is applied by a printing method or the like, wet-heat-treated at a temperature of 100 to 180 ° C. for 1 to 10 minutes without being dried, and then washed by the method as described above, and then a treatment solution containing a cross-linking resin is applied by a padding method, It is applied by a spraying method or a coating method, dried if necessary, and subjected to dry heat treatment at a temperature of 120 to 160 ° C for 1 to 3 minutes or wet heat treatment at a temperature of 100 to 180 ° C for 1 to 10 minutes to obtain a product. .

In the second method of the present invention, a treatment liquid containing at least one dye selected from vat dyes, sulfur dyes, indigo dyes and disperse dyes is added to a cellulosic fiber structure by a padding method, It is applied by a spray method or a printing method, dried if necessary, and 10 if necessary.
A wet heat treatment is performed at a temperature of 0 to 180 ° for 1 to 10 minutes, a treatment liquid containing a crosslinked resin is applied by a padding method, a spray method, a coating method, a textile printing method, or the like, and then dried if necessary. Dry heat treatment is performed at a temperature of 160 ° C. for 1 to 3 minutes, or wet heat treatment is performed at a temperature of 100 to 180 ° C. for 1 to 10 minutes, and then the product is washed by the above method to obtain a product.
When the treatment liquid containing the crosslinked resin is partially applied by a printing method or the like, it is possible to express the squeeze pattern in the obtained product.

In the third method of the present invention, in the second method of the present invention, cutting sewing is further performed first, or after a treatment liquid containing a dye is applied, cutting sewing is performed, or a cross-linked resin is used. A cutting and sewing step of applying cutting liquid after containing a treatment liquid containing the same, or cutting and sewing after heat-treating.

In the fourth method of the present invention, a treatment liquid containing at least one dye selected from vat dyes, sulfur dyes, indigo dyes and disperse dyes and a crosslinking resin is applied to the cellulosic fiber structure. Ding method, spray method,
It is applied by a coating method or a printing method, dried if necessary, and heat-treated at a temperature of 120 to 160 ° C for 1 to 3 minutes or wet heat at a temperature of 100 to 180 ° C for 1 to 10 minutes, and then as described above. The product is made by washing by various methods.

In the fifth method of the present invention, in the fourth method of the present invention, cutting sewing is further performed first, or cutting sewing is performed after applying a treatment liquid containing a dye and a cross-linking resin. Alternatively, a cutting and sewing step of cutting and sewing after heat treatment is included.

A treatment liquid containing at least one dye selected from vat dyes and sulfur dyes is applied to the products obtained by the second method and the fourth method of the present invention to develop a color. By doing so, it is possible to obtain a product having further excellent robustness.

[0020]

In the first method of the present invention, when at least one dye selected from vat dyes, sulfur dyes, indigo dyes and disperse dyes is added to the cellulosic fiber structure on a pigment base, the dyes are cellulosic fibers. The structure is not dyed and is simply contaminated, but by heat-moisture treatment, it penetrates from the fiber surface into the skin layer (but does not penetrate into the middle layer), and a certain degree of fastness can be obtained. . Next, when this is washed, the dye partly falls off, resulting in a bleaching tone or a white tone. When a cross-linking resin is applied to this, the dye will firmly adhere to the cellulosic fiber structure, and the color will not fade and the discoloration sensation will not progress with each washing.

In the second and fourth methods of the present invention,
When at least one dye selected from vat dyes, sulfur dyes, indigo dyes, and disperse dyes is added to the cellulosic fiber structure as a pigment base and a cross-linking resin is added, the dye does not stain the cellulosic fiber structure, Although it is simply in a contaminated state, by heat-treating this, the dye penetrates from the fiber surface into the skin layer (but does not penetrate into the middle layer),
The cross-linking resin allows the dye to firmly adhere to the cellulosic fiber structure. Next, when this is washed, the resin partly falls off, and the dye comes off accordingly.
It becomes a wash-out tone. Alternatively, the dye that could not be included in the resin falls off and becomes a wash exposed tone. However, since the cross-linked resin is hardly removed during home washing, the color fades and the feeling of discoloration does not progress with each washing.

[0022]

EXAMPLES The present invention will be specifically described below based on examples. The appearance (whitening exposure, washing exposure), washing test, dyeability / detachability, and dyeing fastness were measured by the following methods.

(1) Appearance (whitening exposed) Judgment was made by visual observation by 10 professional inspectors. The criteria are as follows. ◯: The white-bleached medium-white dyeing condition is excellent, and there are no scratch-shaped spots. Δ: The white-bleached medium-white dyeing state is slightly inferior, and there are a few rub-shaped spots. X: The white-bleached white-medium state is inferior in the state of dyeing, and there are spots of rubbing shape.

(2) Appearance (wash-bleached tone) O: The wash-bleached tone is excellent in medium white dyeing state, and there are no spots in the rub shape. Δ: The wash-bleached intermediate white dyeing state is slightly inferior, and there are a few rub-shaped spots. X: The white-washed state after washing and bleaching is inferior, and there are rub-shaped spots.

(3) Washing test JIS L 1042 F-1 method (4) Dyeing on / off property of TET with Macbeth COLOR-EYE colorimeter
The ALK / S concentration was calculated and displayed as a relative value with the standard being 100. (5) Dyeing fastness Rubbing fastness JIS L0849-1971 Gakshin method Washing fastness JIS L0844-1986 A-2 method (6) Washing shrinkage rate JIS L 1024 F-2 method

Example 1 A 40-count single yarn (cotton count) was used as a warp, and a 20-count single yarn (cotton count) was used as a weft, with a warp density of 170 yarns / inch and a weft density of 8
A cotton twill fabric woven with 0 pieces / inch was subjected to desizing, scouring, bleaching, and mercerizing in a conventional manner.

A treatment liquid consisting of 5% by weight of Mikeslen Brown BR (manufactured by Mitsubishi Kasei Hoechst Co., Ltd.) and 95% by weight of water as a vat dye was applied to the twill fabric at a pickup rate of 80% and then at a temperature of 104 ° C. Steaming treatment was carried out for 8 minutes, and then washing was carried out with a rotary washer at a temperature of 60 ° C. for 60 minutes at a bath ratio of 1:50 and a rotation speed of 40 times / min to remove the dye, followed by dehydration and drying.

Then, a treatment liquid consisting of 3% by weight of Viplet USV (27% by weight of active ingredient, manufactured by Bayer Co.) as a polyether type water-soluble urethane resin and 97% by weight of water was picked up to the obtained dyeing object. % Padding, then dry for 2 minutes at a temperature of 120 ° C, temperature of 150 ° C
Then, the product of Example 1 was obtained.

Example 2 Beckamine LF-S (manufactured by Dainippon Ink and Co., Ltd., 40% by weight of active ingredient) was used as a glyoxal type condensation resin instead of the treatment liquid consisting of the polyether type water-soluble urethane resin and water in Example 1. The same treatment as in Example 1 was carried out except that a treating liquid consisting of 15% by weight, 4% by weight of Catalyst G (manufactured by Dainippon Ink and Chemicals, Inc.) as catalyst and 81% by weight of water was used to obtain the product of Example 2. It was

Example 3 In Example 1, the treatment liquid consisting of the polyether type water-soluble urethane resin and water was replaced with an acrylic ester emulsion resin, Boncoat R (manufactured by Dainippon Ink and Chemicals, Inc.).
The same treatment as in Example 1 was carried out except that a treatment liquid consisting of 4% by weight of active ingredient (30% by weight) and 96% by weight of water was used to obtain a product of Example 3.

Comparative Example 1 A product of Comparative Example 1 was obtained by performing the same treatment as in Example 1 except that the treatment was not performed with the polyether type water-soluble urethane resin.

COMPARATIVE EXAMPLE 2 The same procedure as in Example 1 was carried out except that drying was carried out for 2 minutes at a temperature of 120 ° C. instead of performing the steaming treatment after applying the dye in Example 1. Got the product.

Example 1, Example 2, Example 3, Comparative Example 1
Table 1 shows the physical properties of the products obtained in Comparative Example 2. still,
As a comparative cloth, a cloth impregnated with a dye and dried (at a temperature of 120 ° C. for 2 minutes) is described.

[0034]

[Table 1]

As is clear from Table 1, the products obtained in the examples are superior to the products obtained in the comparative examples in the wash durability and the dyeing fastness of white-bleached exposure. Since the product obtained in Comparative Example 1 is not resin-processed, it is inferior in wash durability and wash shrinkage ratio of whitening exposed, and in Comparative Example 2 without the steaming treatment after dyeing, the dye falls off during washing. It does not become white tone.

Example 4 A treatment liquid consisting of 5% by weight of Mikeslen Brown BR (manufactured by Mitsubishi Kasei Hoechst Co.) as a vat dye and 95% by weight of water was picked up on a twill fabric having a mercerized surface similar to that in Example 1 at a pick-up rate of 80. % Padding, then 2 at 120 ℃
Min dried. Next, a treatment liquid consisting of 5% by weight of Viplet USV (manufactured by Bayer) as a polyether type water-soluble urethane resin and 95% by weight of water was padded on this twill fabric at a pickup rate of 80%, and then at a temperature of 104 ° C. for 8 hours.
Steaming treatment for 60 minutes, then rotary washer at 60 ° C for 60 minutes, bath ratio 1:50, rotation speed 40
The product of Example 4 was obtained by washing at once / min to remove the dye, dehydration and drying.

Example 5 Beckamine LF-S (manufactured by Dainippon Ink and Chemicals, Inc.) 1 as a glyoxal type condensation resin was used in place of the treatment liquid consisting of the polyether type water-soluble urethane resin and water in Example 4.
The same treatment as in Example 4 was carried out except that a treatment liquid consisting of 5% by weight, 4% by weight of Catalyst G (manufactured by Dainippon Ink and Chemicals, Inc.) as catalyst and 81% by weight of water was used to obtain the product of Example 5. It was

Example 6 In Example 4, 4% by weight of Boncoat R (manufactured by Dainippon Ink and Chemicals, Inc.) was used as an acrylic acid emulsion resin instead of the treatment liquid consisting of the polyether type water-soluble urethane resin and water.
The same treatment as in Example 4 was carried out except that a treatment liquid containing 96% by weight of water and water was used to obtain a product of Example 6.

Example 7 A product of Example 7 was obtained by performing the same processing as in Example 4 except that the sewing was performed by cutting before washing with the rotary washer. The product obtained in Example 7 had a large amount of dye on the convex portions of the seam and fell off on the concave portion of the seam, and had the shape of a washed product.

Comparative Example 3 Comparative Example 3 was carried out in the same manner as in Example 4 except that the polyether type urethane resin was not used.
Got the product.

The physical properties of the products obtained in Example 4, Example 5, Example 6 and Comparative Example 3 are shown in Table 2.

[0042]

[Table 2]

As is clear from Table 2, the products obtained in the examples are superior to the products obtained in the comparative examples in the wash durability in wash bleaching tone, the dyeing fastness and the wash shrinkage ratio. .

Example 8 A twill fabric with a mercerized surface similar to that in Example 1 was mixed with 5% by weight of Mikeslen Brown BR (manufactured by Mitsubishi Kasei Hoechst) as a vat dye and Viplet USV (Bayer) as a polyether type water-soluble urethane resin. 5% by weight, water 9
A treatment liquid consisting of 0% by weight was padded at a pickup rate of 80%, dried at a temperature of 120 ° C. for 2 minutes, and then heat-treated at a temperature of 150 ° C. for 3 minutes. Thereafter, the product was washed with a rotary washer at a temperature of 60 ° C. for 60 minutes at a bath ratio of 1:50 and a rotation speed of 40 times / min to remove the dye, followed by dehydration and drying to obtain the product of Example 8.

Example 9 A product of Example 9 was obtained by performing the same process as in Example 8 except that the sewing was performed before cutting with a rotary washer in Example 8. The product obtained in Example 9 had a large amount of dye on the convex portions of the seam and dropped off on the concave portion of the seam, and had the shape of a washed product.

Example 10 To the product obtained in Example 8, a treatment liquid comprising 5% by weight of Mikeslen Brown BR (manufactured by Mitsubishi Kasei Hoechst) as a vat dye and 95% by weight of water at a pick rate of 80%. After padding, it was dried at a temperature of 120 ° C for 2 minutes, and then a treatment solution consisting of solid caustic soda 40g / l, hydrosulfite conc 60g / l, and salt 30g / l was padded at a pickup rate of 80%, and then air was blown. 10 not included
Steaming with saturated steam at 4 ℃ for 30 seconds, oxidation,
The product of Example 10 was obtained by washing with water and soaping.

Comparative Example 4 A product of Comparative Example 4 was obtained by performing the same treatment as in Example 8 except that 5% by weight of water was used instead of the polyether type water-soluble urethane resin.

Example 11 A twill fabric with the same mercerized surface as in Example 1 was mixed with 5% by weight of Mikeslen Brown BR (manufactured by Mitsubishi Kasei Hoechst) as a vat dye, and Viplet USV (Bayer) as a polyether type water-soluble urethane resin. 5% by weight of urea, 5% by weight of urea, 82% by weight of emulsion paste (50% by weight of kerosene, 3% by weight of emulsifier, 47% by weight of water) are printed on a flat screen machine at a temperature of 100 ° C.
And dried for 1 minute, and then steamed at a temperature of 104 ° C. for 8 minutes. Then with a rotary washer the temperature is 60 ° C.
For 60 minutes at a bath ratio of 1:50 and a rotation speed of 40 times / minute to remove the dye, dehydrate and dry to obtain the product of Example 11.

Comparative Example 5 A product of Comparative Example 5 was obtained by performing the same treatment as in Example 11 except that 5% by weight of water was used instead of the polyether type water-soluble urethane resin.

Example 12 A twill fabric having the same mercerity as that of Example 1 was mixed with 5% by weight of Mikeslen Brown BR (manufactured by Mitsubishi Kasei Hoechst) as a vat dye and Viplet USV (Bayer) as a polyether type water-soluble urethane resin. 5% by weight of urea, 5% by weight of urea, 4% by weight of synthetic paste consisting of ammonium polyacrylate or sodium polyacrylate, water 7
8% by weight of printing paste was printed on a flat screen machine, dried at a temperature of 100 ° C. for 1 minute, then at a temperature of 18
Steaming was performed at 0 ° C. for 8 minutes. Thereafter, the product was washed with a rotary washer at a temperature of 60 ° C. for 60 minutes at a bath ratio of 1:50 and a rotation speed of 40 times / min to remove the dye, followed by dehydration and drying to obtain a product of Example 12.

Comparative Example 6 A product of Comparative Example 6 was obtained by performing the same treatment as in Example 12 except that 5% by weight of water was used instead of the polyether type water-soluble urethane resin.

Table 3 shows the physical properties of the products obtained in Example 8, Example 10, Comparative Example 4, Example 11, Comparative Example 5, Example 12 and Comparative Example 6.

[0053]

[Table 3]

As is clear from Table 3, the products obtained in the Examples have a wash-exposed finish as compared with the products obtained in the Comparative Examples.
It can be seen that it has excellent wash durability in wash bleaching, fastness to washing, and shrinkage upon washing.

[0055]

As described above, according to the method of the present invention, there is no difficulty in controlling the dyeing density and the problem of odor as in the prior art, and there is a reproducible, durable and washable sensation. It can be achieved and its industrial utility value is great. Further, the obtained product can have all hues and has a feeling of being exposed to washing as never before, and further, the obtained product has no problem in washing shrinkage and is useful as a casual use.

Claims (5)

[Claims] 1. A vat dye, which is applied to a cellulosic fiber structure,
Applying a treatment liquid containing at least one dye selected from sulfur dyes, indigo dyes and disperse dyes, followed by moist heat treatment, followed by washing, and then applying a treatment liquid containing a crosslinked resin, followed by heat treatment. A method of washing and bleaching a cellulosic fiber structure, which comprises: 2. A vat dye, a cellulose-based fiber structure,
Cellulose characterized by applying a treatment liquid containing at least one dye selected from sulfur dyes, indigo dyes and disperse dyes, then applying a treatment liquid containing a cross-linking resin, followed by heat treatment and washing. Method for bleaching and bleaching of base fiber structures. 3. The method for bleaching and exposing a cellulose-based fiber structure according to claim 2, further comprising first cutting and sewing, or after applying a treatment liquid containing a dye, then cutting and sewing, or a crosslinked resin. After applying the treatment liquid containing
A method of washing and exposing a cellulosic fiber structure, comprising a cutting and sewing step of cutting and sewing or heat-treating and then cutting and sewing. 4. A vat dye, a cellulose-based fiber structure,
Applying a treatment liquid containing at least one dye selected from sulfur dyes, indigo dyes, and disperse dyes and a cross-linking resin,
A method of washing and exposing a cellulosic fiber structure, which comprises heat-treating and then washing. 5. The method for bleaching and exposing a cellulosic fiber structure according to claim 4, further comprising cutting and sewing first, or cutting and sewing after applying a treatment liquid containing a dye and a cross-linking resin. Alternatively, a method of washing and exposing a cellulosic fiber structure, comprising a cutting and sewing step of cutting and sewing after heat treatment.