JPH08337976A - Continuous dyeing method for pile fabric - Google Patents

Abstract

(57) [Summary] [Purpose] Color breakage occurs in pile fabrics that are mixed with two or more kinds of cationic dye-type fibers having different relative saturation values and different affinity for dye liquor. To provide a dyeing method capable of continuous dyeing without being dyed. [Structure] A pile raw fabric made of spun yarn in which two or more kinds of cationic dyeable acrylic fiber raw cotton having a relative saturation value difference of 0.5 or more is mixed, and a pile raw fabric is represented by the following general formula (1): Or a dialkyl sulfosuccinate salt represented by the following general formula (2) The perfluoroalkyl carboxylate represented by
A continuous dyeing method for pile stock fabric, which comprises dyeing with a dyeing solution containing ˜5.0 g / l.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile raw fabric made of spun yarn in which two or more kinds of cation dyeable type raw fibers such as acrylic fibers having a relative saturation value of 0.5 or more are mixed. The present invention relates to a method for continuously dyeing the same, without causing color breakage.

[0002]

2. Description of the Related Art Natural fur consists of bristles called guard hair and down hair called down hair.
It has excellent texture, appearance and functionality and is mainly used for overcoats. For example, beaver
It consists of guard hair and down hair, and has been used by cutting the guard hair in actual use. Taking mink as an example, about 70% to 80% of thin and short down hair and about 20% to 30%.
It consists of a relatively thick and long guard hair that occupies, and the down hair supports the guard hair and makes it a nap shape,
It also helps with blooming. In addition, the double-layer structure of these down hair and guard hair has a hue effect,
And gives a soft feeling.

In order to bring pile products closer to the characteristics of natural fur as described above, various studies have been conducted on pile materials, spun yarns, and pile weaving techniques. In particular, spun yarns for piles are required to have appearance and touch characteristics and functionality of pile products, and therefore material type, fineness, cross-sectional shape of material, shrinkage ratio, and mixing ratio are important factors.
For this reason, it is necessary to mix two or more types of raw materials in the spun yarn for piles, and different relative saturation values (S
The material of _F value) is present.

That is, the spun yarn for piles is generally composed of a guard hair component and a down hair component with reference to natural fur. As a pile material, synthetic fibers are often used, mainly acrylic fibers. Since this acrylic fiber has many manufacturing conditions, the relative saturation values of commercially available acrylic fibers are widely distributed. Further, since there are various kinds of fiber oil agents on the fiber surface, the affinity for the dyeing agent is greatly different. In particular, the surface of the fiber is modified with an oil agent in order to obtain a texture like animal hair, aiming at higher quality pile pile products. Known as these oil agents are organosiloxanes and their derivatives, polyamine polyamide derivatives, and the like. In this way, due to the difference in the resin composition of the acrylic fiber, the manufacturing method, and the affinity of the fiber oil agent,
There are various values for the relative saturation value of acrylic fibers.

The relative saturation value of the fiber, as used herein, is a scale for comparing the absorbability of dyes in cation-dyeable fibers such as acrylic fibers, and is a gram of a cationic dye having a molecular weight of 400 and dyed to 100 gram of fiber. Represents a number.
The dyeing conditions at this time are 100 ° C. and 60 minutes.

By the way, when a pile knitted fabric is obtained by using such a spun yarn for piles, from the viewpoint of the commercial property, when the guard hair is dyed lightly and the down hair is dyed dark, The depth is obtained, and more realistic expression is possible. However, a plain product such as a beaver tone requires a uniform hue.

However, when the raw cottons having different relative saturation values are dyed at the same time as described above, color breakage due to light and shade,
It is known that color breakage due to hue difference is likely to occur. In order to solve these problems, there is an example in which the dyes are selected so that the dyeing speeds of the three primary colors are uniform with respect to the fiber having a low relative saturation value. In general, when the relative saturation value difference is around 0.5, color breakage easily occurs due to the hue difference, but it is known that dyeing is almost uniform by selecting dyes of the three primary colors. In addition, in the case of acrylic fibers, when color breakage due to a hue difference occurs, Glauber's salt is used to carry out re-dyeing with the aim of uniform dyeing due to the migration effect of the dye. However, this method alone is not sufficient for continuous dyeing.

[0008]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to pile a raw cotton of two or more kinds of cationic dyeable type fibers having different relative saturation values and different affinity for dye liquor. An object of the present invention is to provide a dyeing method capable of continuously dyeing a raw fabric, which is substantially uniform and does not cause color breakage.

[0009]

Means for Solving the Problems The present inventors have extensively investigated the effect of surfactants in order to increase the affinity between cationic dye-type fibers such as acrylic fibers and dye liquor. , It was found that the effect of salts such as sulfosuccinic acid and fluorinated carboxylic acid was remarkable. In particular,
The effects of the dialkyl sulfosuccinate ester salt and the fluorinated carboxylate salt are excellent, and the following general formulas (1) and (2)
Can be represented by

[0010]

Embedded image

[0011]

[Chemical 4]

The continuous dyeing method of the present invention is achieved by adding 0.2 to 5 g / l of the above selected surfactant to the dye liquor. That is, in the present invention, the difference in relative saturation value is 0.
Dyeing a pile raw fabric made of spun yarn in which two or more kinds of cation dyeable fibers of 5 or more are mixed with 0.2 to 5.0 g / l of dialkylsulfosuccinic acid ester salt or perfluoroalkylcarboxylic acid salt. It is a continuous dyeing method for pile pile fabric, which is characterized by dyeing using a liquid.

The above-mentioned acrylic fibers are typical of the cation-dyeable fibers to which the continuous dyeing method of the present invention is applied, but other than this, for example, cation-dyeable fibers such as polyethylene terephthalate (PET) can be used. It can also be applied to dye-type polyester fibers.

The formulation and method of the dye liquor excluding the above-mentioned surfactant may be those conventionally known. That is, in the present invention, the pile raw fabric is a cationic dye, a dispersant, a leveling agent,
It is immersed in a dyeing liquor containing the above-mentioned surfactant in addition to an acid, a fixing agent and the like in a usual manner, and subsequently, squeezing is performed to fix the dye with water vapor.

Acrylic fibers, which are typical fibers to which the continuous dyeing method according to the present invention is applied, are acrylonitrile (A
N) A copolymer comprising 30 parts by weight or more, which is obtained by copolymerizing AN with one or more kinds of polymerizable monoolefin monomers such as vinyl chloride and vinylidene chloride.

Further, in order to improve the commercialability of pile products, the fineness of the guard hair component of the spun yarn for piles is 3 to 3.
0d is preferable, and 5-20d is more preferable. The cross-sectional shape of the guard hair fiber is circular, hollow circular, kidney-shaped, cocoon-shaped, flat-shaped, oval, 3-lobed, 4-lobed, 5-lobed,
The shape may be selected from the above shapes, but in order to visually appeal as a guard hair, a flat shape or an elliptical shape is preferable.

The fineness of the down hair component is 1-10.
d is preferable, and 2 to 7d is more preferable. The cross-sectional shape of the down hair fiber is not particularly limited, and can be selected from a shape such as a circular shape, a hollow circular shape, a kidney shape, a cocoon shape, a flat shape, an elliptical shape, a three-lobed shape, a four-lobed shape, and a five-lobed shape. Good. Furthermore, the shrinkage ratio of this fiber is preferably 40% or less,
% Or more is preferable. The shrinkage ratio as used herein is a ratio of the shrinkage displacement length to the pre-shrinkage fiber length, expressed as a percentage (%), as compared with the fiber length before shrinkage after the shrinkage of the wet heat-treated fiber length.

The pile spun yarn can be obtained by a general long fiber spinning method. A pile product is mainly composed of a base cloth and a pile, and as a manufacturing method thereof, a woven pile method, a knitting boar method, a Russell method and the like are known.

[0019]

EXAMPLES Examples of the present invention will be shown below, but prior to the description of the examples, a method for evaluating dyeability will be described in detail.

(Evaluation Method of Dyeability) In order to evaluate the substantially uniform dyeability of the pile stock fabric, a gray scale for discoloration and fading (JIS L0804) was used to compare with the pile stock fabric before dyeing. Grades 4 and above were evaluated as uniform.

<Examples 1 to 3> Acrylic fiber ( _SF value 1.0) 50% by weight of a polymer composed of acrylonitrile 90% by weight, vinyl acetate 9% by weight and sodium methallylsulfonate 1% by weight with a fineness of 12d. % and an acrylic fiber with fineness 4d made of the same polymer and the using (S _F value of 2.2, the shrinkage rate of 30%) spun yarn pile consisting of 50 wt%, to obtain a raw fabric of knitted bore. The obtained raw fabric was dipped for 6 seconds using the dyes shown in Table 1 below, followed by squeezing with a squeezing ratio of about 90%, followed by steam treatment for 20 seconds,
It was washed with water and dried. Finishing was performed by combining brushing, polishing, and shirring, and a pile fabric having a pile length of 14 mm and a basis weight of 600 g / m ² was obtained.

<Example 4> 50% by weight of acrylic fiber ( _SF value 1.7) made of the same polymer as in Example 1 with a fineness of 11d and acrylic fiber made of the same polymer as 3d in 3d ( _SF value). 2.3, shrinkage 28%) 50% by weight 2
A raw fabric of a woven pile was obtained by using a spun yarn for a / 28 (metric number 28 twin yarn) pile. Continuous dyeing and finishing are performed in the same manner as in Example 1, pile length 20 mm, and basis weight 700
A raw fabric of g / m ² was obtained.

Comparative Example 1 As in Example 1, 50% by weight of 12d acrylic fiber (S _F value 1.0) and 4d acrylic fiber (S _F value 2.2, shrinkage 30%) 50 weight%
The knitted fabric of knitted fabric obtained by using the spun yarn for piles is continuously dyed and finished in the same manner as in Example 1 except that the surfactant-free dye is used in the dye formulation shown in Table 1. The pile length is 14 mm and the basis weight is 600.
A pile pile of g / m ² was obtained.

[0024]

[Table 1]

The kinds and concentrations of the surfactants in Table 1 are as shown in Table 2 below. The dyeability of the pile raw fabrics obtained in Examples 1 to 4 and Comparative Example 1 was evaluated, and the results are shown in Table 2.

[0026]

[Table 2]

As is clear from the results shown in Table 2, the continuous dyeing formulation according to the present invention containing a specific surfactant can give a pile product having substantially no color breakage,
A remarkable difference was recognized as compared with the comparative example of the formulation not using the surfactant.

[0028]

As described above, according to the continuous dyeing method of the present invention, the difference in relative saturation value is 0.5 or more, and two or more cation-dyeable types having different affinities for dyes are used. Even if it is a pile original fabric in which fibers are mixed, it is possible to obtain a uniform pile product without color breakage.

Claims (5)

[Claims] 1. A pile raw fabric made of a spun yarn in which two or more kinds of cationic dyeable raw fibers having a difference in relative saturation value of 0.5 or more are mixed with a dialkylsulfosuccinic acid ester salt or a perfluoroalkylcarboxylic acid. 0.2 to salt
A continuous dyeing method for pile stock fabric, which comprises dyeing with a dyeing solution containing 5.0 g / l. 2. The continuous dyeing method for pile stock fabric according to claim 1, wherein the cationic dyeable fiber is an acrylic fiber. 3. The continuous dyeing method for pile stock fabric according to claim 1, which comprises using a dyeing solution containing a dialkylsulfosuccinic acid ester salt represented by the following general formula (1). Embedded image 4. The continuous dyeing method for a pile stock fabric according to claim 1, wherein a dyeing solution containing a perfluoroalkylcarboxylic acid salt represented by the following general formula (2) is used. Embedded image 5. The continuous dyeing method for pile pile fabric according to claim 1, wherein the pile pile fabric comprises a thin and short down hair component and a relatively thick and long guard hair component.