JPH0418071B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for dyeing a fibrous structure made of cellulose fibers and protein fibers. (Prior Art) Conventionally, cellulose fibers and protein fibers such as wool have been dyed in batches using a winch dyeing machine or jet dyeing machine, and have not been carried out by the pat dyeing method. This is because it is difficult to uniformly dye, for example, regenerated cellulose fibers and wool using the padding method. On the other hand, for cotton fiber structures, a method is used in which an alkaline dye solution is applied and then rolled up to fix the dye, followed by soaping. However, for fiber structures containing wool etc., there is a problem with the dyeability of wool. Therefore, it cannot be applied. The present inventors have completed the present invention as a result of searching for a dyeing method free of such defects. (Problems to be Solved by the Invention) An object of the present invention is to provide a method for dyeing a fiber structure made of cellulose fibers and protein fibers that has excellent level dyeing properties and can be dyed in deep colors. be. Another object of the present invention is to provide a dyeing method in which such dyeing is carried out by a padding method. (Means for Solving the Problems) When dyeing a fiber structure made of cellulose fibers and protein fibers, the method of the present invention involves dyeing a neutral to acidic dye solution containing a vinyl sulfone type reactive dye. It is characterized in that after being applied by a method, it is rolled up, left to stand, and then dried, then an alkaline solution is applied, and then a steaming treatment is performed. Examples of cellulose fibers to be used in the present invention include regenerated cellulose fibers produced by the viscose method or copper ammonia method, cotton, hemp, etc., with recycled cellulose fibers and hemp being preferred, and regenerated cellulose fibers being particularly preferred. Examples of protein fibers include wool, alpaca, mohair, and silk, with wool and silk being preferred. The mixing ratio of cellulose fiber and protein fiber is usually 55 to 90% by weight of cellulose fiber, preferably
70-85% by weight and protein fibers 10-45% by weight, preferably 15-30% by weight. A mixture of the two is a blend,
Any of mixed twisting, mixed weaving, and mixed knitting may be used, but mixed spinning is particularly preferred. A woven fabric is particularly preferred as the fibrous structure. Conventional vinyl sulfone type reactive dyes are used for the present invention, such as Remazol dye from Hoechst, Sumifix from Sumitomo Chemical Co., Selmazol from Mitsui Toatsu Co., Ltd., Dairamira from Mitsubishi Kasei Co., Ltd., etc. can be mentioned. The concentration of the dye solution may be determined as appropriate depending on the type of dye, color, etc., as long as it is not particularly limited. The PH of the dye solution must be adjusted to neutral or acidic, and should be adjusted to PH8.
Below, it is preferably 7 or less, more preferably 6 or less, particularly preferably 5 or less. The pH is usually adjusted using sodium acetate, sodium hexametaphosphate, dibasic sodium phosphate, or the like. The temperature of the dye solution is not particularly limited and may be any normal temperature, generally 20 to 30℃.
That's fine. The fibrous structure to which the dye solution has been applied by the padding method is once rolled up and left to stand, usually at 10 to 60°C.
The standing time varies depending on the temperature, but is usually 10 to 50 hours. Preferably, it is left to stand at 20-30°C for 20-30 hours. During this time, the protein fibers are dyed with a vinyl sulfone type reactive dye. After standing, the fiber structure is usually heated to 80℃ or higher, preferably
Dry at 100-120℃, alkaline solution, preferably
After applying a 40-43 degree Baume water glass aqueous solution at 15-25℃, usually at least 100℃, preferably 120-
Steam treatment at a temperature of 130℃. The shorter the steaming treatment time, the better, and it is about 1 minute at most. The dyeing method of the present invention can be applied to a continuous dyeing machine generally used for cotton fabrics. Further, after dyeing by the dyeing method of the present invention, discharge printing using a vat dye can also be performed. (Effects of the Invention) The method of the present invention uses a conventional continuous dyeing machine for cotton fabrics to obtain a fiber structure having excellent level dyeing properties and a deep color. In addition, because it is a low-temperature dyeing and short-time heating dyeing method, it is an energy- and water-saving dyeing method, and the texture of the dyed fabric is also extremely good, with an extremely low level of loss in strength. . (Example) The present invention will be explained in detail in the following example. Example 1 80% by weight of rayon, 20% by weight of wool, warp #30 single yarn (cotton count) warp density 85/inch, weft #30 single yarn (cotton count) weft density 70/inch 2/2 twill structure Plain dyeing of a blended fabric with a basis weight of 165 g/m ² was carried out using the following method. After washing the blended fabric with hot water at 80°C, it was treated with hot water at 60°C containing 2 g of an enzyme desizing agent for 1 hour, thoroughly washed with hot water, and then dehydrated and dried. Diamirored B (Mitsubishi Kasei Corporation) as a vinyl sulfone type reactive dye
) 40g/Sumifits Scarlet R
(manufactured by Sumitomo Chemical Co., Ltd.) 36 g/, Sumifix Blue BB (manufactured by Sumitomo Chemical Co., Ltd.) 12 g/, urea 150
g/, wool leveling agent Migre Girl WA-10
(manufactured by Nippon Someka Co., Ltd.) 2g/, PH regulator sodium hexametaphosphate 1g/, dibasic sodium phosphate 2g/
, sodium nitrobenzene sulfonate 10g/,
A dyeing solution for plain dyeing consisting of 10 g of acetic acid and 2.4 g of sodium alginate was prepared and padded onto the above blended fabric at a pick-up rate of 70%, rolled up and left at 30°C for 24 hours. After leaving it to dry, it was dried at 120℃, and a 40℃ Baume water glass solution was padded at room temperature with a pick-up rate of 65%.
Steaming was performed at 100° C. for 1 minute, followed by sufficient hot water washing, water washing, dehydration, and drying to obtain a rayon/wool blend plain dyed fabric with a uniform dark red wool-like texture. The color fastness, tensile strength, and tear strength of the plain dyed fabric of Example 1 are shown in Table 1 below. Example 2 Rayon, silk blend fabric with 60% by weight rayon and 40% by weight silk, warp #30 single yarn (cotton count) warp density 85/inch, weft #30 single yarn (cotton count) weft density 70/inch was stained using the following method. Remazol Brilliant Orange GD (Hoechst Co., Ltd.)
(manufactured by Nippon Oil & Fats Co., Ltd.) 60g/, urea 100g/, silk leveling agent Nitsusan Dispanol M-32A (manufactured by Nippon Oil & Fats Co., Ltd.) 2
g/, PH regulator sodium hexametaphosphate 10g/
and monobasic sodium phosphate 2g/, reduction inhibitor nitrobenebensulfonic acid sodium 10g/, acetic acid
A dyeing solution consisting of 10 g/2.4 g of sodium alginate was padded at a pick-up ratio of 70%, then rolled up and left at 20° C. for 40 hours.
After being left to dry at 120°C, a 43° Baume water glass aqueous solution was applied at a pick-up rate of 65%, and the mixture was heated to 100°C.
Steaming was performed for 1 minute, followed by sufficient hot water washing, water washing, and drying to obtain an orange silk-like rayon/silk blended fabric with excellent level dyeing properties. The color fastness, tensile strength, and tear strength of the plain dyed fabric of Example 2 are shown in Table 1 below. Example 3 Hemp, wool blend fabric with 70% hemp and 30% wool by weight, warp #30 single yarn (cotton count) warp density 85/inch, weft #30 single yarn (cotton count) weft density 70/inch The staining was carried out using the following method. After washing the blended fabric with hot water at 80°C, it was treated with hot water at 60°C to which 2 g of an enzyme desizing agent had been added for 1 hour, and thoroughly washed in hot water. Furthermore, sodium tripolyphosphate 4
g/, activator for scouring bleaching Sandetto CKC-2
(manufactured by Sanyo Chemical Co., Ltd.) 2g/and hydrogen peroxide 15
Scouring and bleaching was carried out at 60°C for 2 hours in a bleach bath consisting of 500 g/ml, followed by thorough hot water washing, dehydration, and drying. Remazol Red 3B (Hoechst Co., Ltd.) as a dye
A dyeing solution similar to that used in Example 1 was prepared, except that 60 g/ml of the dyestuff was used, and the dye solution was padded onto the linen/wool blend fabric at a pick-up rate of 70%, rolled up, and left at 30° C. for 30 hours. After being left to stand, it was dried at 120°C, padded with an aqueous water glass solution, steamed, washed with hot water, washed with water, and dried in the same manner as in Example 1 to obtain a red hemp/wool blend fabric with excellent level dyeing properties. The color fastness, tensile strength, and tear strength of the plain dyed fabric of Example 3 are shown in Table 1 below. 【table】

Claims (1)

[Scope of Claims] 1. When dyeing a fibrous structure made of cellulose fibers and protein fibers, a neutral to acidic dye solution containing a vinyl sulfone type reactive dye is applied by a patting method and then rolled up. 1. A method for dyeing a fibrous structure, which comprises: drying after being left to stand, then applying an alkaline solution and then subjecting it to a steam treatment. 2. The method according to claim 1, wherein the cellulose fiber is recycled cellulose fiber or hemp. 3. The method according to claim 1, wherein the protein fiber is wool or silk. 4 Fiber structure is 55-90% by weight of cellulose fibers
and 10 to 45% by weight of protein fiber. 5. The method according to claim 1, wherein the method is left at 10 to 30°C after winding. 6. The method according to claim 1, wherein the standing time is 10 to 50 hours. 7 Claim 1 in which drying is carried out at 80°C or higher
The method described in section. 8. The method according to claim 1, wherein the alkaline solution is a water glass aqueous solution having a temperature of 40 to 43 degrees Baumé. 9. The method according to claim 1, wherein the steaming treatment is carried out at a temperature of at least 100°C. 10. The method according to claim 1, wherein a preliminary steaming treatment is performed before applying the alkaline solution.