JP3528014B2 - Melange dyeing method for fabric - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dyeing method for wool fabrics such as woven fabrics and knitted fabrics using wool fibers, and more particularly to a dyeing method for producing a melange-like appearance.

[0002]

2. Description of the Related Art Dyeing methods for immersing a fabric to be dyed in a dye solution (dyeing) include a method using a direct dye, a method using an acid dye, and a method including an acid dye, depending on the type of fiber. Various methods such as a method using a metal complex hydrochloric acid dye, a method using a basic dye, a method using an acid mordant dye, and a method using a reactive dye have been adopted.

In these dyes, various dyeing aids such as penetrants and leveling agents are used as dye solutions for the purpose of improving the permeability of dyes into fibers, leveling properties and controlling the dyeing speed. It is added to the inside and dyed.

Conventionally, in dyeing a wool cloth such as a woven or knitted fabric with a wool fiber, in order to obtain a so-called melange-like product expressed by mixing various colors, an anion containing an anionic auxiliary is added. A cloth to be dyed is dipped in a solution of a system dye and dyed at a considerably high temperature.

For example, when an anionic reactive dye is used, the cloth as the material to be dyed is fed into the kettle of the dyeing machine, the temperature of the dye solution containing the auxiliaries is raised to about 95 ° C. and immersed for about 60 minutes. After that, the temperature is once lowered, ammonia water is added, the temperature is further raised to about 70 ° C., and it is left for about 20 minutes for dyeing.

At this time, the anionic dye in the dye solution is exhausted to the wool fiber at a high temperature, but at the same time, the anionic auxiliaries are also exhausted. Therefore, when the dyeing treatment is performed without adding the auxiliaries. The exhaustion rate of the dye in the dye solution is lower than that of As a result, the cloth is unevenly dyed and the appearance becomes melange.

[0007]

However, the above-mentioned conventional dyeing method is a batch dyeing method using a closed pot, which is poor in energy efficiency, because it is immersed for a long time at a considerably high temperature of 95 ° C. or higher. In addition, since continuous dyeing is not possible, work efficiency is poor.

In view of this, the present invention provides a melange-like dyeing method capable of efficiently dyeing at low temperature and capable of continuous dyeing as a dyeing method for dyeing a woolen fabric with a melange tone. is there.

[0009]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the melange dyeing method for a cloth according to the present invention adopts the following first to third steps.

First Step In the first step, the fabric to be dyed, which is made of wool, is pretreated with a solution of a cationic resin. This treatment is carried out by immersing the cloth in the solution of the cationic resin, and after the immersion, the cloth is squeezed and dried.

The dipping treatment in this cationic resin solution is
The solution temperature is preferably maintained at a relatively low temperature of 30 ° C. or lower, preferably 15 to 25 ° C., and the immersion time is preferably 5 to 60 seconds. That is, when the solution temperature becomes high, continuous treatment becomes difficult, and energy efficiency also decreases. Therefore, it is preferable to perform the immersion treatment at the above temperature. The squeezing ratio of the cloth after soaking is about 60%, and the drying temperature is 130%.
℃ × time about 60 seconds.

Examples of the above-mentioned cationic resin include quaternary ammonium salts and polyamine resins.

By the pretreatment by immersion in the cationic resin solution in the first step, the anionized wool fiber in the solution and the cationic resin are bound by ionic bond, and the cationic resin is attached to the wool fiber. It will be.

Second Step Next, in a second step, the cloth treated in the first step is dipped in a solution of an anionic dye for dyeing. After the cloth is dipped in the dye solution, it is squeezed once. dry.

For the dyeing treatment in the second step, anionic dyes having anions such as known acid dyes, metal-containing complex hydrochloric acid dyes, basic dyes and acid mordant dyes can be used. A dyeing aid is added as necessary.

Immersion of the anionic dye in the solution is preferably carried out in a relatively low temperature range of 30 ° C. or lower, preferably 15 to 25 ° C., and the immersion time is preferably 5 to 60 seconds. . That is, as the temperature of the dye solution increases,
Continuous processing is difficult and energy efficiency is poor. If the temperature is low, the reproducibility of dyeing will be poor. Therefore, it is better to carry out the immersion treatment at the above temperature. The squeezing ratio of the cloth after soaking is 60%, and the drying is carried out at a temperature of 130 ° C. and a time of about 60 seconds.

By the dyeing treatment by dipping in the dye solution in the second step, the cationic resin attached to the wool fiber of the cloth by the treatment in the first step and the anionic dye in the dye solution form an ionic bond. Join. As a result, the anionic dye is attached to the wool fiber by an ionic bond through the cationic resin and is dyed.

Third Step In the next third step, the cloth dyed as described above is washed with water to partially remove the attached dye. That is,
Washing with water is a continuous washing at room temperature for about 30 to 90 minutes, the squeezing ratio of the fabric after washing is about 60%, and the drying temperature is 130 ° C
The time is about 60 seconds.

Here, since the anionic dye is attached to the wool fiber by a weak bond called an ionic bond, it is easily removed by washing with water accompanied by physical friction, and as a result, the dyed state of the cloth is uneven. It occurs and has a melange tone.

That is, the first step, the second step and the third step
By sequentially performing the respective treatments of the steps, the wool fabric can be continuously dyed at a relatively low temperature and can be dyed in a melange tone.

[0021]

EXAMPLES The following woolen fabrics were subjected to the dyeing method according to the present invention as follows.

100% wool fiber, woven fabric; gabardine, fabric weight; 420
g / m First step (cationic resin tank) Cationic resin; 3% ows of Neofix RP-70 (trade name, Nika Kagaku Co.) which is a polyamine resin
(On the weight of solution
n) using the aqueous solution of n) at a temperature of 20 ° C. for a dipping time of 30 seconds, squeezing this with a squeezing ratio of 60%, and using a drier equipped with a pin tenter, a temperature of 130 ° C. and a time of 60
Dry in seconds.

Second step (anionic dye bath) Anionic dye; Lanasan Gray CF (S
and 5% ows aqueous solution (manufactured by andoz), bath ratio 1:20, temperature; 20 ° C., soaking time; soaking time of 30 seconds for dyeing treatment. Machine) at a temperature of 130 ° C. for 60 seconds.

Third step (washing tank) The cloth dyed in the second step is treated with a bath ratio of 1:20.
It was immersed for 90 minutes in the water washing tank and washed with water, and then the cloth was squeezed at a draw ratio of 60% and dried by a pin tenter (dryer) at a temperature of 130 ° C. for 60 seconds.

In the cloth dyed through the first to third steps, the adhering dye is partially removed by washing with water in the third step, and unevenness occurs in the dyed state, and various colors are mixed. It became a dyed product with a melange tone.

[0026]

As described above, according to the melange dyeing method for the fabric of the present invention, the wool fabric which has been conventionally subjected to the batch dyeing method at a high temperature can be efficiently dyed in a melange tone at a relatively low temperature. Moreover, continuous dyeing treatment is possible, and energy efficiency and dyeing work efficiency can be greatly improved.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomoaki Tanimura 3-74, Muromura-cho, Ogaki, Gifu Prefecture Ogaki Plant, Kanebo Co., Ltd. (56) Reference JP-A-4-163379 (JP, A) JP-A 6-212578 (JP, A) JP 62-263389 (JP, A) JP 60-126389 (JP, A) JP 6-184960 (JP, A) JP 48-39780 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) D06P 5/00 120-123 D06P 5/00 104 D06P 3/14-3/16

Claims (2)

(57) [Claims] 1. A first step of pretreating a woolen cloth with a solution of a cationic resin, a second step of immersing the treated cloth in a solution of an anionic dye, dyeing it , and then drying the cloth. A melange-tone dyeing method for fabrics, which comprises a third step of washing the fabric with water to partially remove the attached dye. 2. The pretreatment with a cationic resin solution in the first step and the dyeing treatment with an anionic dye solution in the second step are performed by immersing a cloth at a relatively low temperature of 30 ° C. or less. The melange dyeing method for a fabric according to claim 1.