JPS60162885A - Dyeing of cellulose blended product - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for dyeing cellulose-mixed articles.

Conventionally 1 When dyeing or printing a synthetic fiber/cellulose fiber mixed product, for example, cellulose fiber is used.

Combining dyes for cellulose such as vat dyes, reactive dyes, direct dyes, and naphthol dyes with dyes for synthetic fibers (for example, disperse dyes for polyester in the case of polyester fibers, acid dyes and metal-containing dyes in the case of polyacrylonitrile fibers) It is done in combination.

However, due to the difference in physical and chemical properties of the two dyes, the use of a mixture of different dyes in mixed products requires more dyeing or printing than when each dye is used alone for dyeing or printing. cause problems.

For example, the dyeing or printing conditions for cellulose fibers and the dyeing or printing conditions for synthetic fibers are different, so in mixed products, the dyeing or printing conditions suitable for fixing cellulose dyes will affect the dyeability of synthetic fiber dyes. It may cause On the other hand,
Dyeing or printing conditions suitable for fixing dyes for synthetic fibers may affect the dyeability of dyes for cellulose.

In recent years, for cellulose mixed products, for example, polyester fiber/cellulose fiber mixed products are dyed or printed with a combination of reactive dyes and disperse dyes, but in this case,
At high temperatures in combination with alkali (eg, sodium carbonate, sodium bicarbonate) used in reactive dyes, disperse dyes cause poor dyeing and hue changes on polyester fibers.

The hue may become dull and cause various problems.

There is also a method of dyeing polyester fiber/cellulose fiber mixed products in different hues to create a different color effect.

However, with this method, although a different color effect can be obtained, it is difficult to obtain a discharge-printed product in which one hue is clear and has a three-dimensional effect.

The present inventors have conducted intensive studies on a method for producing printed products with a clear hue and a three-dimensional effect using dyes for cellulose and dyes for synthetic fibers in synthetic fiber/cellulose fiber mixed products, and have developed the present invention. It's arrived.

That is, the present invention is a method for dyeing a synthetic fiber/cellulose fiber mixed product, which is characterized by subjecting the synthetic fiber to background dyeing and then printing the cellulose fiber. .

According to the present invention, in a synthetic fiber/cellulose fiber mixed product, by ground dyeing the synthetic fiber part and then printing the cellulose fiber part, the pattern part (the part where the ground dyeing and the printing overlap)
The synthetic fiber part is dyed by ground dyeing, and the cellulose fiber part is dyed by printing. In addition, the synthetic fibers in the areas other than the pattern are dyed by background dyeing, but the cellulose fibers remain white. In this way, by combining dyeing and printing, the pattern is made into an art book, and the parts other than the pattern are made from synthetic fibers with a heathered texture, making the pattern stand out.

It is possible to produce three-dimensional discharge prints.

The synthetic fiber/cellulose fiber mixed product in the present invention is
Cotton, linen, viscose rayon (including polynosic)
, blending, mixing, twisting, mixing, knitting, etc. of cellulose fibers such as cuprammonium rayon and synthetic fibers such as polyester fibers, polyacrylonitrile fibers, and polyamide fibers, etc. The method of mixing is preferably yarn. Among these, mixed fibers are most preferred. In addition, the mixing ratio and form are not particularly limited, but especially when giving a three-dimensional effect, it is better to configure the mixed fabric so that the surface is rich in cellulose. The blending ratio of the fibers and synthetic fibers is such that cellulose fibers are mixed for 10 to 30 minutes.

The present invention includes a process of background dyeing synthetic fibers, a washing and drying process,
It consists of a process of printing cellulose fibers, a steaming process, and a washing and drying process.

Background dyeing of synthetic fibers may be carried out by any of dip dyeing, pad thermosol method, and pad dyeing steam method, as long as it is a method of fixing synthetic fiber dyes to synthetic fibers. For example, in the case of polyester fibers, disperse dyes commonly used for dyeing polyester fibers are preferably used, and particularly preferred dyeing methods include dip dyeing, pad thermosol method, and pad steam method.

In the case of polyacrylonitrile fibers, the preferred dyeing method is a pad steam method or dip dyeing using a cationic dye or a disperse dye. In the case of polyamide fibers, acid dyes or metal-containing dyes are used, and the dyeing method is preferably dip dyeing or pad O steam method. Further, the dyeing conditions such as dyeing temperature and dyeing time are not particularly limited as long as the dye for synthetic fibers adheres to the synthetic fibers simultaneously.

The purpose of the cleaning process for synthetic fiber background dyeing is to remove undyed dye from the synthetic fiber portion and remove dye that has contaminated the cellulose fiber portion. If the synthetic fiber is polyester fiber, reduction cleaning is performed at 70 to 90°C for 10 minutes using a reducing agent such as hydrosulfide or thiourea dioxide, an alkaline agent such as sodium hydroxide or sodium carbonate, and a nonionic or anionic detergent. Perform for ~30 minutes. The concentration is 0.5-5 f/L for the reducing agent and 0.5-41 f/L for the alkaline agent.
/L, nonionic or anionic detergent 0.5-2
A range of 171°0 is preferred. When the synthetic fiber is polyacrylonitrile fiber or polyamide fiber, a no-pink treatment is performed at 70 to 90 u for 10 to 30 minutes using an alkaline agent such as sodium carbonate and a nonionic or anionic detergent. The concentration is preferably in the range of 0.5 to 5 t/L for the alkaline agent and 0.5 to 21 t/L for the nonionic or anionic detergent.

Next, the synthetic fiber/cellulose fiber mixed product with the synthetic fiber portion ground dyed is printed. The dye used may be any dye for cellulose such as direct dyes or reactive dyes, and reactive dyes are particularly preferred when fastness and brightness are required.

As the printing paste, pastes commonly used for printing cellulose fibers, such as sodium alginate, highly etherified fiber-containing paste, or 0/'w type emulsion paste, are used alone or in combination.

Auxiliary agents commonly used in printing pastes include urea as a dye dissolving agent, sodium metanitrobenzenesulfonate as a reduction inhibitor, and sodium carbonate and sodium bicarbonate as alkaline agents.

After printing on the synthetic fiber/cellulose fiber mixed product, it is steamed at 100 to 120°C in a dry or undried state.

Steaming is performed with saturated steam at 100-105°C for 10-30 minutes and with unsaturated steam at 105-120°C for 1-20 minutes to fix the dye on the cellulose fiber part.After steaming, wash with water.
Wash at 0 to 90°C for 5 to 20 minutes, wash with water, and dry.

In order to obtain a discharge print with a clear and three-dimensional effect, which is the objective of the present invention, the hue of the dyed synthetic fiber part and the printed cellulose fiber part should be the same, for example, as shown in Table 1. Systematic hues or complementary colors are preferred.

Also, in terms of color density, dark colors give a more three-dimensional effect than light colors.

Table 1: The synthetic fiber/cellulose fiber mixture obtained by this method has a three-dimensional effect, has a print quality similar to discharge printing, and is clear and robust. The value is very high.

Next, a concrete explanation will be given using examples.

Example 1 Viscose method rayon 75d/33f polyester 5
A satin fabric made of a blended yarn of 0d/36f with a mixing ratio of 60'16/40% was dyed and reduced-washed under the following conditions to obtain a black satin fabric partially dyed with polyester fibers.

The staining conditions are as follows.

■ Dyeing Kayalon Po17ester Black B
R8F 6% ay! Resor-type dispersant 2 f/L Acetic acid (98%) 0.3 (Ic/L Bath ratio 1: so 120 minutes x 60 minutes ■ Reduction cleaning hydrosulfide 2 P/L Sodium hydroxide o, s tlL Sunmo #RC-7001cc/L Bath ratio 1:50 80°C x 20 minutes Next, the fabric was printed under the following printing conditions.

■ Printing paste composition Sodium alginate (8%) 700 parts C, 1, Reactive Black 5 6G Sodium methanthrobenzenesulfonate lO Urea 50 Sodium hydrogen carbonate 30 Water 150 Print the above printing paste with a 1500 mesh polka dot screen. , and dried at 80° C. for 1 minute.

■ Steaming conditions: Treated with saturated steam at 100°C for 15 minutes.

■ Cleaning conditions After washing with water, wash with Maysanol BHS New (nonionic detergent...manufactured by Kasei Kagaku Co., Ltd.) at 80℃ for 15 minutes at 80℃ for 15 minutes, then wash with water and dry. A discharge dyed satin fabric was obtained.

(Invention method) In contrast, viscose method rayon 75 d/33 f
A satin fabric made of a mixed yarn of polyester #5 od/aaf was dyed and reduced and washed under the same conditions as in Example 1 to obtain a black satin fabric partially ground-dyed with polyester fibers.

Next, the cellulose fiber portion was dyed yellow under the following conditions.

■Staining C, 1, Reactive Yellow t a 4
% owf Sodium sulfate 50 f/L Sodium carbonate 10 f/L Bath ratio l: 50 70°C x 60 minutes■ Nooping Meisanol BH8 = Knee 2f/L 80°C in aqueous solution
The fabric was washed with water for 16 minutes, washed with water, and dried to obtain a satin fabric whose fine polyester parts were black and whose cellulose fiber parts were yellow. (Comparative Example) The results obtained by the above method are shown in Table 2.

As is clear from the results shown in Table 2, according to the method of the present invention, a discharge printing-like printed product with a sharp, raised pattern and a three-dimensional effect was obtained.

Example 2 A jersey knitted fabric composed of a mixed yarn of viscose rayon 300d/aof and polyester 75d/36f (go/'zo) was made into C, 1, Disperae Bwe.
Dyeing and reduction washing was carried out at 1394% owt K under the same conditions as in Example 1 to obtain a dark blue jersey silk fabric dyed with polyester.

Next, the knitted fabric was printed under the following printing conditions.

■ Printing paste composition Sodium alginate (8%) 700 parts Kayacion Navy P-N 2 Ra.

Metanitrobenzenesulfonic acid sorter 1° Urea 5° Sodium trichloroacetate 5° Water 150 The above printing paste was printed using a 1200 mesh water screen and dried at 80° C. for 1 minute.

■ Steaming conditions Processed at 105°C for 15 minutes in an HT steamer.

■Washing conditions Washing, washing with water, and drying were carried out under the same conditions as in Example 1 to obtain a dark blue discharge dyed jersey knitted fabric.

(Method 1 of the present invention) On the other hand, the viscose method - yaw 300 a/ao
A jersey knitted fabric consisting of intertwisted yarns of F and polyester 7sd/asf (80/20) was dyed and reduced, washed, printed, steamed, washed, and dried under the same conditions as method 1 of the present invention to obtain a dark blue discharge dyed jersey knitted fabric. . (Method 2 of the present invention) Table 3 shows the results obtained by the above method.

Table 3 From the results shown in Table 3, method 1 of the present invention produced discharge-like prints that were clearer and had a three-dimensional effect than method 2 of the present invention.

As mentioned above, as is clear from Example 1.2, according to the method of the present invention, it is possible to combine dyeing and printing in synthetic fiber/Celp fiber mixed products, resulting in a clear and three-dimensional effect. Patent applicant: Asahi Kasei Industries, Ltd.

Claims (1)

[Claims] A method for dyeing a cellulose mixed product, which is characterized in that when dyeing a synthetic fiber/cellulose fiber mixed product, first, the synthetic fiber is ground-dyed, and then the cellulose fiber is printed.