JPH05302281A - Production of ombre-like dyed fabric - Google Patents

Abstract

PURPOSE:To readily obtain ombre-like fabric in previously scouring, bleaching and dyeing by dye liquors of different colors ranging two processes, by gradually shortening the length of fabric dyed by the dye liquors and partially dyeing. CONSTITUTION:White fabric scoured and bleached as pretreatment before dyeing is dyed in a specific color and in a specific shade (preferably light color) by a dye liquor. Then the dyed fabric is vertically hung in a dye liquor having a hue different from that of the dye liquor, the length of the fabric is gradually shortened and the fabric is partially dyed by the dye liquor to extremely readily give ombre-like dyed fabric without using complicated facilities. Optionally the partially dyed part of the fabric is partially decolored between the first process for dyeing by the dye liquor and the second process for dyeing by the dye liquor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dyeing a white cloth, and in particular, a white dyed cloth is subjected to a two-step dyeing treatment so as to produce a dyed product having a fading effect. The present invention relates to a method for producing a gradation dyed product.

[0002]

2. Description of the Related Art As is well known, in dyeing a cloth, first, as a preparatory step for dyeing, stains and oils attached to fibers in the cloth to be treated are removed, and a scouring treatment and a bleaching treatment for removing glue Is done. In the refining process, for example,
Foreign substances adhering to the fibers are removed by adding soap, synthetic detergent, caustic soda, and sodium carbonate to heat, and the starchy adhesive adhering to the fibers is removed by fermentation treatment with diastase. In the bleaching treatment, for example, the cloth to be treated is dipped in a dilute solution of bleaching powder, sodium chlorite, hydrogen peroxide or the like to enhance suitability for the dyeing treatment (pure whiteness etc.). After these scouring and bleaching processes, the pre-treated white fabric is dyed. The dyeing process for white fabric is
It is roughly divided into dip dyeing and textile printing. Immersion dyeing is a method of immersing fibers in a dyeing bath in which dyes and auxiliaries are melted to an appropriate thickness to dye the whole thing in a solid color. This is a method of printing a color pattern on cloth in sequence using a machine or a die and dyeing a multicolor pattern.

[0003]

Conventionally, in the dyeing treatment of white fabric, the dipping method described above is advantageous in that the apparatus for the treatment is simple, but as described above, It could not meet the diversifying demands in that it could be dyed in a solid color. Therefore, in the present invention, in the conventional white fabric dyeing treatment described above, a basic dip dyeing method is arranged to eliminate the disadvantage that the entire fabric can be dyed only in one color and is solid. It is an object of the present invention to provide a method for producing a dyeing product for a gray-dyed fabric for manufacturing a dyed product having a gray-dyed fabric having at least two different dyed portions on a white cloth.

[0004]

In order to achieve the above object, the present invention specifically provides a pretreatment step for dyeing including a scouring treatment and a bleaching treatment, and a pretreatment step in the pretreatment step. First white dyeing step of totally dyeing the white fabric of the above with a specific color to a specific density;
The second step of dyeing the material, which is dyed with a specific color in a specific density in the step of dyeing, in a color different from the specific color, at least once It constitutes a method for producing a wind-dyed product. Further, in the present invention, after the first tie-dyeing step, the part that is partially dyed up by the second tie-dyeing step is subjected to a decolorizing treatment in advance, and the second decolorizing-processed portion is subjected to the second It also includes a structure that makes a dyeing process.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The method for producing a fading dyed article according to the present invention will be described in detail below with reference to specific embodiments shown in the drawings. FIG. 1 is a block diagram schematically showing a basic process configuration of a method for producing a gradation dyed article according to the present invention.
FIG. 3 is a side sectional view schematically showing an example of a concrete embodiment of the second tie-dyeing step in the method for producing a fading-dyed article according to the present invention.

First, the present invention includes a pretreatment step 1,
In the pretreatment step 1, for the desired fabric M to be treated,
Pretreatment for dyeing treatment is performed. The pretreatment for the dyeing treatment includes scouring treatment and bleaching treatment,
Specifically, the scouring treatment includes, for example, soap, synthetic detergent,
Foreign substances adhering to the fibers are removed by heating with caustic soda and sodium carbonate, and the starchy adhesive adhering to the fibers is removed by a fermentation treatment with diastase. In the bleaching treatment, for example, the cloth to be treated is dipped in a dilute solution of bleaching powder, sodium chlorite, hydrogen peroxide or the like to improve suitability (purity etc.) for dyeing treatment.

The present invention comprises a first dyeing step 2. The first dyeing step 2 is for dyeing the white fabric pretreated in the pretreatment step 1 as a whole with a specific color to a specific density, and a desired dye and an auxiliary agent are added. Dip the pre-treated white fabric in a dye bath that has been melted to an appropriate depth to dye the entire white fabric evenly and uniformly. In the first dyeing step 2, it is preferable to dye the entire white cloth in a solid color evenly, but in some cases it may be dyed in a dark color. In the latter case, the decoloring process 3 is performed after the first dyeing process 2.
The decoloring process 3 is a second dyeing process 4 described later.
The part to be partially dyed by is subjected to a decolorizing process in advance.

On the other hand, according to the present invention, the second dyeing step 4
Consists of The second dyeing step 4
Is a structure in which the fabric dyed in a specific color with a specific density in the first dyeing step 2 is partially dyed with a color of a system different from the specific color.
In the second dyeing step 4, the cloth is hung as shown in FIGS. 2A to 2C, and the cloth is dipped in a dye bath in which desired dyes and auxiliaries are dissolved in an appropriate concentration, and the dipped portion Partly dye. In the second dyeing process 4, the gradation dyeing process can be performed by dyeing while changing the dye concentration and the dipping level.

In the example shown in FIG. 2, FIG. 2A shows the first dye-dyed fabric M in the first dye-dying step 2.
Is hung vertically, and the cloth edge portion Ma is dipped in the dyeing liquid N in the dyeing bath 5 by a desired length L ₁ to perform the second dyeing process. In this case, the length L ₁ of the dye bath N soaked in the dye bath 5 is gradually shortened, and the concentration of the dye N in the dye bath 5 is gradually increased every time the length L ₁ of the bath is shortened. By raising it, the so-called gradation dyeing style is applied from the boundary between the first tie-dyeing processed portion by the first tie-dyeing process and the second tie-dyeing processed portion by the second tie-dyeing process to the fabric end portion Ma side. Can be dyed.

The example shown in FIG. 2B is the first dyeing process 2
The first dyed fabric M in FIG. 2 is suspended in an inclined state, and the fabric end portion Ma is dipped in the dyeing liquid N in the dyeing bath 5 by a desired length L ₂ It is a dyeing process. In this case as well, by performing the same process as the example shown in FIG.

On the other hand, in the example shown in FIG. 2, FIG.
The first dyed fabric M in the first dyeing process 2 is hung down via an appropriate pair of guide rollers R, and the intermediate portion Mb of the fabric is dyed in the dye bath N in the dye bath 5. The second dyeing treatment is carried out by immersing in the desired length L ₃ . In this case, the length L ₃ soaked in the dyeing liquor N in the dyeing bath 5 is gradually shortened, and the concentration of the dyeing liquid N in the dyeing bath 5 is gradually increased every time the length L ₃ soaked is shortened. By raising the distance, from the boundary between the first tie-dyeing treated portion by the first tie-dyeing process and the second tie-dyeing treated portion by the second tie-dyeing process to the midpoint of the fabric intermediate portion Mb, 2 or more. A so-called gradation dyeing can be applied to a part of the place.

[0011]

EFFECT OF THE INVENTION The method for producing a gradual dyeing-like dyeing product of the present invention having the above construction is a technique for dyeing, which is considered to be an extremely simple facility and excellent in workability in the dyeing technique. Only by providing a dyed product with a blur dyeing style that could not be provided conventionally,
It is possible to reduce the cost of production of a dyed dyed dyeing product without requiring complicated equipment and complicated technical skills, and to provide a highly variable dyeing product that is rich in variety. It can be said that it works extremely effectively in terms of possible points. Furthermore, according to the method for producing a gradation-dyed dyed product according to the present invention, it is possible to perform gradation-dyeing which has been entrusted to an extremely highly skilled person such as in the prior art, without requiring a high degree of skill, In that respect, it can be said that it is extremely effective.

[Brief description of drawings]

FIG. 1 is a block diagram schematically showing the basic process configuration of a method for producing a gradation dyed article according to the present invention.

2A to 2C are examples of a specific embodiment of a second tie-dyeing treatment for a fabric M that has been subjected to a first tie-dyeing treatment in a method for producing a dim-dyeing-like dyed product according to the present invention. 2A and 2B show an example of performing the second tie-dyeing treatment on the end portion Ma of the first tie-dyeing-treated fabric M, and FIG. 2C shows the first tie-dyeing treatment. It is a schematic side cross-sectional view showing an example in which the second tie-dyeing treatment is applied to the intermediate portion Mb of the cloth M having been subjected to the tie-dyeing treatment.

[Explanation of symbols]

 1 Scouring and bleaching process 2 1st dyeing process 3 Decolorizing process 4 2nd dyeing process 5 Dyeing bath M Fabric to be treated Ma Fabric edge part Mb Fabric middle part N Dyeing solution

Claims (2)

[Claims] 1. A pretreatment process for dyeing, including a scouring treatment and a bleaching treatment, and a first treatment for dyeing a pretreated white fabric in the pretreatment process with a specific color to a specific density as a whole. A dyeing step and a second step of partially dyeing the fabric dyed in a specific color with a specific density in the first dyeing step with a color of a system different from the specific color at least once. A method for producing a fading dyed article, which comprises a step of dyeing. 2. After the first dyeing step, the second
2. The part which is partially dyed up by the step of dyeing is subjected to a decolorizing treatment in advance, and the second dyeing treatment is performed on the decolorized portion. A method for producing a fading dyed product.