JPH0369631A - Colored material of piled cloth and production thereof - Google Patents

Abstract

PURPOSE:To obtain the title colored material suitable for seats for automobiles, seats for chair upholstering, having excellent qualities free from blacking and white fading by uniformly dyeing the tip part of napped fiber constituting piled cloth under a specific condition. CONSTITUTION:Napped cloth having 6-30 micron thickness of single yarn, 0.2-5mm length of napped fiber, comprising napped fiber part having a length ratio of tip part A and root part B in the direction of fiber axis A:D=(0.1-0.6):(0.9-0.4) is colored by ink jet printing by a pore diameter nozzle shown by formula I (formula II is thickness of single yarn; formula III is pore diameter of nozzle) through n times printing (1<=n<=16) of unit printing area point in a different color system of two or more colors in the fiber direction and into color parts wherein the part A and the part B have difference of <=20.0 value of hue ring at least in Munsell system and difference of <=3.0 value of color value to give the aimed colored material.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a colored fabric with improved quality and a method for producing the same, particularly for vehicle seats and chairs that are free from so-called dark spots and blurring. This invention relates to a colored fabric suitable for sheets, etc., and a method for producing the same.

(Prior art) There is no fixed definition between dark spots and white blur in coated fabric, but when coated fabric is stretched in the shape of a seat, etc., it may partially occur in the recesses, protrusions, or curved surfaces that are formed. Dark areas (referred to as dark spots) are formed, and parts that appear whitish (referred to as white blur) are formed, which has the disadvantage of significantly deteriorating the aesthetic appearance. This phenomenon is caused by the fact that even if a product is manufactured in which the piles of a coated fabric stand essentially vertically, the pile yarns will stand at various angles from the perspective of the person observing it. It is explained that this occurs due to subtle differences in transmission and reflection of accompanying light (see Japanese Patent Laid-Open No. 63-275741).

However, the reality is that there is still no in-depth solution to these quality defects of coated fabrics.

The present inventors previously proposed a solution using a low temperature plasma method in Japanese Patent Application No. 63-22923.

On the other hand, JP-A-56-49087. Japanese Patent Publication No. 61-2312
Publication No. 79 proposes a method of coloring the napped yarns constituting the napped sheet in spots or minute units in the fiber axis direction, but both of these methods aim to express a unique color effect when the napped yarns fall down. This is not a method for eliminating dark spots and white blur, which is the purpose of the invention.

(Problems to be Solved by the Invention) In view of the above-mentioned problems, the inventors of the present invention aimed to produce a high-quality coated fabric colored product that eliminates dark spots and white blur that have not been seen in the past. As a result of our studies, we have arrived at the present invention.

The present inventors have determined that the tips of the raised yarns constituting the coated fabric are
It has been found that the above problem can be solved by dyeing uniformly and satisfying predetermined conditions. Furthermore, under inkjet printing conditions, the nozzle hole diameter, which is related to the size of the ink droplet, has a certain range of tip cross-sectional area of the napped single yarn, and the color and pattern expression of the coated fabric is improved. We have found that this can further improve the

On the other hand, it has been found that by using a coated fabric whose pile yarn is colored in advance, the number of printings can be reduced and the above effects can be further enhanced. Furthermore, when polyester or polyamide fibers are used as napped yarn, by applying a low polycondensation polyester resin material prior to and/or simultaneously with the inkjet printing operation, it is possible to achieve the above effects as well as permanent static elimination ability. It was discovered that it has antifouling ability.

As described above, the present invention is a colored fabric with no black spots or white blur that is not seen in conventional products, and is a colored fabric with extremely superior quality such as vehicle seats, chair upholstery seats, etc. It provides products and their manufacturing methods.

(Means for solving the problems) The present invention that achieves the above objects firstly has a single fiber thickness of 6
A fabric with a nap size of ~30 microns and a nap length of 02 to 5, the nape part of which has a structure in which the tip part (A) and the root part 5) (B) are colored in a different color. and (a) consists of threads of different colors that are substantially colored in two or more colors in the fiber axis direction, and (a) the length ratio of A and B in the fiber axis direction is A:B = 0.
．． 1-0.6: 0.9-0. -4, and (b) Part A is a color part that differs from part B by at least 20.0 or less in the hue wheel value and 3.0 or less in lightness value in the Munsell color chart system. The second aspect of the present invention is a colored fabric with no black spots or white blur.
Using a nozzle with a hole diameter that satisfies the relational expression between the single fiber thickness φF) and the nozzle hole diameter (φN), a cloth with a thickness of m is used, and n-fold printing (1≦n16 ) is colored by inkjet printing.

In the method of the present invention, it is also preferable to use a coated fabric whose pile yarns are colored in advance.

In addition, a polycondensate of polyethylene glycol having a molecular weight of 500 to 3,000 and terephthalic acid having an average degree of polymerization of 3 to 15 is applied to the coated fabric in advance and/or at the same time to impart antistatic and antifouling properties. When a coated fabric made from pile yarn of polyester or polyamide is used, a more preferable colored fabric can be obtained.

The present invention will be explained in more detail below.

In the present invention, a covered fabric is a woven fabric, a knitted fabric, a nonwoven fabric, a flocked fabric, a carpet, etc. in which a fiber aggregate forms a sheet and has napped on the front and/or back side.

Hereinafter, the raised portions on the front and/or back surfaces will be referred to as pile yarns, and the portion holding the raised portions will be referred to as ground yarns.

For example, a coated fabric with a pile formed using a tricot ball knitting machine, a raschel loop pile knitting machine, a circular knit sinker pile knitting machine, etc. is mainly used as the starting fabric.

In addition, the coated fabric is impregnated with resin, glue, etc., coated,
It also includes those applied by means such as spraying.

The fibers that make up the covered fabric can be freely selected from natural fibers and chemical fibers, but include polyester fibers, polyamide fibers, polyacrylic fibers, viscose rayon fibers, cuprammonium rayon fibers, and triacetate fibers. Chemical fibers such as the above are suitable because they can ensure a uniform tip cross-sectional area due to their manufacturing method.

Natural fibers such as wool and cotton are also suitable as they have a quality not found in the chemical fibers mentioned above.

These can be used alone or in the form of blends, mixed fibers, or mixed fibers of two or more types.

However, if you rank the quality of the hair without dark spots or white spots due to uniform dyeing of the tip of the piloerection system, it is preferably 1.
Polyester fiber is more suitable, and polyester fiber is more suitable.
fibers, polyamide fibers, and polyacrylic fibers.

The single fiber thickness of the pile yarn of the present invention is required to be in the diameter range of 6.8 to 28.0 microns.

A specific example of a single fiber having a diameter of 6.8 microns is a so-called polyester split yarn, which is a polyester yarn made of 72 d/24 f, which is made into a fabric and then divided. A specific example of a single fiber having a diameter of 28.0 microns uses a nylon yarn of 100d/24f.

Here, the most commonly used fiber is 14.2
This corresponds to a so-called 2-3 denier of ~23.7 microns.

Furthermore, the nap length is preferably in the range of 0.2 to 5IllIll. This nap length is the length actually measured when the nap is folded 90', and is the length from the root of the nap yarn to the tip.

Here, the ground thread is from 75d/24f to 100d/26
f is mainly used. The knitting machines mentioned above are mainly 2
A gauge of 0 to 28 is used, and the density of the nap of the nap quantity is determined by this.

A coated fabric is required to have a soft feel and maintain a flexible napped shape at the same time, and although the physical characteristic values of each material differ somewhat, both cannot be satisfied unless the fabric is within the above range.

The first life of a woven fabric is the elegant color and feel that is produced by the nap, but ideally each strand of the nap should be uniformly colored.

However, in order to eliminate dark spots and white blur, which is the aim of the present invention, it has been found that having a predetermined configuration different from this ideal is highly effective. It is necessary to color the tips of the nape extremely and evenly.

Here, the tip portion cannot be easily defined as the length portion at the tip of the nape.

The tip portion consists of a tip cross section and a tip side surface of a single fiber. The most important thing here is the coloring of the cross section of the tip.

The cross section of the tip inherently lacks uniformity due to the fiber production process, and it has not been possible to achieve uniform coloring by conventional means. However, in the present invention, dark spots and white blur are eliminated. Although this is only a matter of speculation, it seems that the coloring of the cross section of the tip became uniform in the method of the present invention.

In the present invention, the coloring of the raised part is such that the tip part (A) and the root part (Bj) are colored in different colors, and the yarn becomes a different color yarn that is substantially colored in two or more colors in the fiber axis direction. It is mandatory that

This can be achieved by applying coloring from the cross section of the tip of the napped yarn toward the root. However, it is desirable that the amount of liquid droplets be as small as possible in order to arrange the coloring agent intensively in the local fiber volume of the tip cross section, and it is preferable that the coloring of the B part be lighter than that of the A part.

Here, the length ratio of A:B is 0.1~0.6=0.9~0.
The range is 4.

In other words, when the density of piloerection is high, the tip part (A) is at least 10
% area is sufficient as a dark colored part, and if the density of raised hair is low, it is sufficient if this is 60%. 60% of this latter
This is to avoid the eyelids that may occur due to bloating, and the tip part (
A) may be equivalent to 10%.

Further, part A has a difference of at least 20.0 or less, preferably 10.0 or less in the hue wheel value from part B in the Munsell color chart system, and a difference of 3.0 or less, preferably 2.0 or less in lightness value. It requires a certain dark color area. That is, it is preferable that the A part and the B part have the same color visually.

Here, the brightness scale is 9.5 (white) to 1 using the Munsell color chart system.
．． 0 (black), and the scale of the hue wheel is 1.
It is based on 00 equal division.

For example, 5.28G1, O/6 has the same green hue as 58G3.5/6, but the former is more dull and the A
The latter is used as the B part.

Another example is 5GY3.5/6 and 58G3.5/
6 is different from 20 on the hue wheel with yellow-green and green,
The V value is also exactly the same. In this case, the latter visually becomes part A.

In the present invention, the inkjet printer includes an electrostatic suction type, an ultrasonic vibration type, a piezo element type, etc., but is not limited to these.

The tip of a nozzle used in inkjet printing has a nearly circular shape, and the aperture diameter at the tip is called the nozzle diameter.

Regarding the thickness of a single fiber, when a single thread is cut in the direction perpendicular to the fiber axis, the cross section of the fiber is revealed, and this cross section is circular, trilobal, etc. and cannot be arranged geometrically, but in the case of fibers,
When converted into a circular shape, the diameter of the circular shape is determined from the average area and the thickness of the fiber is determined, so this definition is also followed here.

In order to obtain suitable printing conditions for the napped fabric, the present inventors have made extensive studies and found that in order to obtain the suitable object shown in the present invention, the thickness of the single fiber (φF
〉, the nozzle hole diameter (which is related to the size of the ink droplet)
It has been found that it is desirable that φN) satisfies the relational expression % 3μ (6μ≦φF≦30μ).

This inequality is an experimental formula, but for a single fiber of 8 microns, a nozzle with a pore diameter of 30 to 97 microns can be used, and 30
For micron single fibers, it is shown that a nozzle with a hole diameter of 50 to 82 microns can be used. Preferably, the nozzle diameter is 50 to 80 microns.

When the thickness is less than 50 microns, the unit colorant liquid amount to be printed is rapidly reduced, and the printing time becomes longer. However, the gradation showing the pattern expression is good. When the diameter is 80 microns or more, the unit coloring liquid volume is approximately four times that of 50 microns, and the unit coloring liquid volume to be printed increases rapidly and the printing time becomes shorter. However, the gradation showing the pattern expression is poor.

It has been found that when the angle between the straightened raised surface and the inkjet nozzle is within 90°±5°, the degree of occurrence of dark spots and white blur is extremely reduced. When viewed chromatically, it can be seen that the coloring agent was concentratedly arranged in the local fiber volume of the tip cross section.

All of the single fibers in the coated fabric have their tip cross-sections facing in the same direction, but each fiber is in a divided state, and there is no entanglement between the single fibers, and the droplets that fall onto the tip cross-sections are separated. The single fibers themselves must hold. To put it simply, part of the amount of liquid that falls on the cross section of the tip of a single fiber is absorbed by the fiber itself, but the amount that cannot be absorbed reaches the ground yarn along the side of the single fiber.

In a coated fabric, the density increases as the single fibers become thinner, and conversely, the density decreases as the fibers become thicker.

This increase in density improves the ability to hold liquid droplets dropped onto the cross section of the tip, and it is possible to cope with the increase in the size of dropped droplets by increasing the nozzle hole diameter.

However, when the single fibers are thick and in the density range, this retention property decreases rapidly, and the nozzle hole diameter cannot be increased unnecessarily.

For this reason, n-fold printing is performed as necessary.

The necessity of this n-fold printing depends on how much coloring is required in the length direction of the napped yarn, as well as the color density.
If the colorant solution concentration is high, printing will be performed multiple times (n=2 or more).

Here, n-fold printing will be explained. - To summarize, in the inkjet method, a unit printing area is set, and this is further divided into equal parts to determine the minimum printing area, so that the unit printing liquid droplet reaches within this area.

For example, a 4x4 matrix is a square divided into 16 equal parts, with 411 squares per color! It's nozzle lines up with the sutra. One of these squares becomes the minimum printing area, and 17 density steps from printing zero to printing 16 can be obtained. In other words, the unit printing area is 4 in printing 16.
The entire ×4 matrix was filled with droplets.

Although the above printing has been explained for one color, other colors are also printed on this same matrix. Ye l I o for one color now
If 16 impressions are made with w and 16 impressions are made with red for other colors, n=2 and double printing is performed.

Here, n-multiple printing refers to printing n times (1≦n≦16) on this area with this unit printing area. Here, in n23, it is preferable to include a drying process in the middle to accelerate the evaporation of the liquid on the cross section of the tip.

In the present invention, the coated fabric is preferably subjected to a treatment to advance the coloring and a treatment to fix the coloring to a higher quality, and the pile yarn is colored in advance to a desired hue expression. You can also do that. For this coloring, methods such as dope coloring, tow dyeing, thread dyeing, thread printing, piece dyeing, and piece printing can be used.

This coloring has the effect of reducing the number of times of n-fold printing in the present invention, the effect of eliminating the defect called "bleeding", and the effect of producing a different color effect.

There are two types of colorants used in the present invention: one for coloring and the other for inkjet printing. From the dye groups classified according to conventional dyeing techniques, those with the most suitable color fastness for the material are selected; i.e., direct dyes for cotton viscose rayon, polynosic rayon, copper ammonium rayon,
Acidic dyes, cationic dyes, reactive dyes, metal-containing dyes, and reactive disperse dyes are selected.

Direct dyes, acid dyes, reactive dyes, and metal-containing dyes are selected for wool and polyamides.

Disperse dyes and reactive disperse dyes are selected for polyester, triacetate, and diacetate. For polyacrylics and acrylic copolymers, cationic dyes and cationic disperse dyes are selected.

The above are called dyes, but pigments can be used regardless of the type of material.

These main components, pigments, are processed for inkjet printing. For processing, we take measures such as purification to remove by-products, impurities, and additives, and sub-adjustment of particle size, viscosity, surface tension, specific conductivity, and PH.

The ink that colors the tip portion (A) preferably has a higher viscosity than the ink that colors the root portion (B).

The viscosity of the coloring ink (B) is 1.0 to 3.5 cps, but the viscosity of the coloring ink (A) is preferably 1.5 to 5.0 cps.

Surface tension (A) (B) of the coloring ink is preferably 40 to 60 dynes/cm.

The nozzle that colors the tip part (A>) has a smaller hole diameter and applied voltage than the nozzle that colors the root part (B).The hole diameter is (B) and the coloring nozzle is 60-9.
The coloring nozzle (A) preferably has a diameter of 30 to 80μ.

The printing voltage is 130 to 200V for the coloring nozzle (B), but preferably 100 to 180V for the coloring nozzle (A>coloring nozzle).

The coloring agent is ejected from the nozzle in the form of a dissolved or dispersed solution, and moreover, in the form of liquid droplets, and is made to reach a predetermined position on the fabric.

Of course, if the printing voltage is increased within the above-mentioned range, the droplets will become larger, the flying force will be increased, the amount of liquid on the fabric will be increased, and the penetration will be improved; if the printing voltage is made smaller, the opposite phenomenon will occur.

In addition to the above-mentioned characteristics, the inkjet printing method has the feature that the depth of coloring on the fabric can be adjusted by adjusting the concentration of the colorant used and the density of the coloring ink per unit area. Furthermore, the inkjet printing method has the feature that several types of coloring agents of different hues can be loaded into an ink pot and mixed to obtain the desired hue and density on the fabric.

It goes without saying that if all the ink pots are filled with the same coloring agent, a wide range of colors can be colored with the same hue.

The selection of the nozzle diameter is determined by the thickness and length of the napped yarn, the pattern to be density-colored, the presence or absence of one-tone density, etc., but the above inequality must be satisfied.

As mentioned above, in order to uniformly color the tip cross section, it is necessary to retain the coloring liquid droplets on the tip cross section, and in order to obtain sharp expressions of gradation and pattern edges in patterned items, high-density napping is necessary. Fabrics and high-resolution inkjet mechanisms are advantageous, and printing conditions should be made as weak as possible by selecting one with a small nozzle hole diameter within the range that satisfies the above relational expression. The method of coloring the root part B of the raised pile in advance is when the pile yarn is colored in advance, and it is possible to do this by using a device that can color the nozzle position in advance during printing.

On the other hand, even during simultaneous printing, by setting the printing conditions for coloring the B part, that is, the printing voltage higher than that of the A part, it is possible to reach the direction of the pile yarn well, and the present invention It can be colored as shown below.

Furthermore, a polycondensate of polyethylene glycol with a molecular weight of 1000 to 3000 and terephthalic acid with an average degree of polymerization of 3 to 15 is applied to the fabric in an amount of 0.1 to 1% owf in advance and/or simultaneously for coloring. It was found that by doing so, it was possible to improve the quality by eliminating dark spots and white blur, and to add permanent anti-static and anti-fouling properties.

This is because the polycondensate is polyethylene terephthalate 40~
43 (7477cm), polyamide 42-46 (747cm)
7cm), polyacrylonitrile 44 (dyne/cr
a few dynes/CII below the critical surface tension measured as
It has a high surface tension and is thought to diffuse onto the tip surfaces and sides of the raised single yarns constituting the coated fabric, and then guide the applied colored droplets to the location where they can work most effectively.

On the other hand, this polycondensate has the property of forming a continuous conductive thin film on the napped single filament by the subsequent heat treatment, which imparts permanent antistatic and antifouling properties.

This degenerate metal is applied on the fabric in an amount of 0.1 to 1% owf in advance and/or at the same time.

The preceding method means that, for example, the above-mentioned process that is applied when coloring pile yarn is incorporated before the current printing process, or it is processed in advance on the same device or the same nozzle for the current printing process. .

It doesn't matter if there is some dryness in between.

Next, a method for producing a colored cloth material will be explained.

The scouring process removes oils and dirt that were used during knitting or adhered to the coated fabric, and the fibers are set to the appropriate density at a predetermined temperature that is appropriate for each fiber. It is preferable that the hair has been treated to be straightened.

The coated fabric is fixed to a fabric support base of an inkjet printing device in an expanded form without distortion or wrinkles. This fixation usually uses an endlessly rotating rubber belt or drum, but another method is to fix the ears on an endlessly rotating bin seat belt at both ears of the fabric, applying uniform tension in the weft direction. It will be done.

Then, the inkjet nozzle is brought close to the pile yarn at a distance that does not make contact with the pile yarn. This distance is called the distance between impressions, and is determined in the range of 0.3 to 10 mm.

The present invention will be specifically explained below with reference to Examples, but it goes without saying that the present invention is not limited to these Examples.

Preparation of treated fabric: Polyester pile yarn (100 d/48 f) single fiber thickness 18 microns, nap length 2 turns, 5 rarl+ double raschel covered fabric and polyamide pile yarn (1
00d/24f) Single fiber thickness 28 microns, nap length 2
There is a 5 mm gap. This was cleaned to remove dirt that had adhered to it during knitting and cutting, thoroughly washed with water, dried, and heat treated at the appropriate set temperature for each type of hair treatment. (These are referred to as sample A group.) On the other hand, for the polyester double raschel cloth, after the above treatment, the weight loss was 7% due to alkaline hydrolysis in a caustic soda 5 degree Baume bath in a jet dyeing machine, and after washing thoroughly with water. , a disperse dye was added, high-temperature dyeing was carried out at 130° C. for 90 minutes, and after reduction washing, the hair was dried and restyled. (This is referred to as sample B group.) The hue of the ink used is represented by a Munsell symbol, and the hue indicates the dyeing hue when single printing is performed with 16 dots.

After printing, the coated fabric is dried or left as is and subjected to steam heat treatment or dry heat treatment to fix the colorant.

In the case of polyamide, polyacrylic, etc. fibers, treatment is performed at 100-105°C for 5-20 minutes using a saturated steam steamer, and in the case of polyester fibers, treatment is performed at 150-185°C using a superheated steam steamer for 5-20 minutes. Treatment is carried out for 20 minutes or for 10 to 60 seconds at 170 to 200° C. using a dry heat steamer.

A conventional washing process is then performed to remove any unfixed colorant. It is desirable to carry out this step in an expanded state to minimize the amount of raised naps.

Next, the hair is dried and set, and a finishing agent is applied and the hair is evenly squeezed through a heat setter to give the final finish.

Example 1 A polyester raschel cloth of sample A with pile length of 2 am was immersed in an aqueous solution containing 0.01% by weight of low-viscosity sodium alginate, washed at a squeezing rate of 80%, and then dried and re-haired.

The 1st and 2nd bottles of an inkjet printing device having 4 nozzle ink pots with 60μ diameter nozzles are 5R5,0.
/14, No. 3.4 was loaded with colored ink prepared from 5R4, 0/10 disperse dye.

The number of printing dots was 12 for each of the former and 16 for each of the latter. The printing distance is 5 degrees, and the printing voltage is 120Vl! The voltage was set to 150V. Here, it is the former that colors part A, and the latter that colors part B.
In the 3/3rd portion, n=4, that is, quadruple printing is performed.

After printing, dry and heat in a superheated steamer at 180℃
90'C
After washing for 0 minutes, it was washed with water, dried, and subjected to a final heat treatment at 180° C. for 2 minutes.

The colored raised yarn had a ratio of A:B of 0.2:0.8, resulting in a colored yarn with red hair and no blurring.

Example-2 Sample A A polyamide raschel cloth with fresh blood hair length of 2 cm was mixed with 0.01% by weight of low viscosity sodium alginate and 1 part ammonium sulfate.
The hair was immersed in an aqueous solution in which % by weight was dissolved, and the hair was dried and styled again at a squeezing rate of 80%.

An inkjet printing device having four nozzles each having a diameter of 60 μm was prepared. The first nozzle ink bottle has 7.5Y3.0/
8. The second nozzle ink bottle has 10RP4. O/8, 3rd
A colored ink prepared from an acid dye of 2°5B4.0/7 was loaded into the nozzle ink bottle, and a colored ink prepared from an acid dye of 5G8.0/2 was loaded into the fourth nozzle ink bottle.

The printing pattern was a circle with a diameter of 5 squares, and the following ink printing dots were used.

Circle-A 16 yen from the 1st nozzle, 16 yen from the 4th nozzle-B
16 yen from the second nozzle, 16 yen from the fourth nozzle - C 8 from the third nozzle, 16 yen from the fourth nozzle - 8 each from the first and second nozzles, 16 yen from the fourth nozzle - B 1st nozzle and 8 each from the third nozzle, 16 from the fourth nozzle, 8 each from the second and third nozzles, and 16 from the fourth nozzle.The printing distance was 5 u+, and the printing voltage was 120V.

After printing, dry and heat in a saturated steamer at 130'C.
An aqueous solution containing a surfactant and fixing XS, 6
After washing at 0°C x tO, it was washed with water, dried and then set at 150°C x 2 times.

Colored raised yarn is A:B=0.2-0.4:0.8-0
．． 6, it became a hairy colored product with multi-colored dotted circles of yellow, red, blue, orange, purple, etc., without dark spots or white blur.

Example 3 Sample B: A colored polyester pile with fresh blood hair length of 5 cm was used. The coloring has a hue density of 5P86.5/1. After the fabric was treated in the same manner as in Example-1, two inks were placed in the first to fourth pots of an inkjet printing device having two nozzle ink pots.
．． The number of printing dots loaded with a coloring material prepared from a 5B3.6/17 disperse dye was 112 in total with each nozzle 16, and 7-fold printing was performed.

The printing voltage was 120V for 2 pieces and 150V for 2 pieces.

The printing pattern was an endless warp stripe having an inkjet printing part with a width of 2 mm in the warp direction and an interval part with a width of 211 II in the warp direction.

After printing, the same processing as in the example was performed.

Since the printing voltage is at two levels, the colored area is approximately A:B=0.2:
It was 0.5. In this case, a portion of about 0.3 parts that was printed lighter than the A portion was created between A and B. Part A of the colored product had a clear warp striped pattern with a density four times that of 2.5B3.6/1.7 and no dark spots.

2g/(
Further diluted and loaded, printing dots 12 each, printing voltage 1
It was printed on the entire surface at 50V and dried. Next, Example-1
The same coloring process as that used for was performed.

The colored napped yarn had an A:B ratio of 0.2:0.8, was a napped colored product with no blurring of red and white, and had a frictional charging voltage of 200 V at a room temperature of 20° C. and relative humidity of 40% RH.

(Effects) As shown in the examples, the present invention provides a colored fabric with no black spots or white blur, which could not be obtained by conventional coloring methods, and improves the quality of the coated fabric. has great industrial value.

Example-4 Sample-B A polyester raschel cloth with a nap length of 5 mm was prepared.

Claims (1)

[Claims] 1. The single fiber thickness is 6 to 30 microns and the nap length is 0.2 to 30 microns.
5 mm thick, the raised part has a configuration in which the tip part (A) and the root part (B) are colored in different colors, and substantially two or more colors in the fiber axis direction. (a) The length ratio of A and B in the fiber axis direction is A:B=0.
1 to 0.6: in the range of 0.9 to 0.4, (b) Part A is at least 20.0 or less in the hue wheel value in the Munsell color chart system than part B, and 3.0 or less in lightness value. 2. Colored fabric with no black spots or white blur, which is characterized by having different colored parts. 2. Single fiber thickness is 6 to 30 microns and nap length is 0.2 to 2.
The relational expression between the single fiber thickness (φ_F) and the nozzle hole diameter (φ_N) is 0.9φ_F+22μ≦φ.
_N≦-0.7φ_F+103μ (6μ≦φ_F≦30
Coloring of the coated fabric according to claim 1, characterized in that n-fold printing (1≦n≦16) of a unit printing area is performed by inkjet printing using a nozzle with a hole diameter satisfying μ). How things are manufactured. 3. The method for producing a colored fabric according to claim 1, which uses a coated fabric whose pile yarns have been colored in advance. 4. A polycondensate of polyethylene glycol with a molecular weight of 500 to 3,000 and terephthalic acid with an average degree of polymerization of 3 to 15 is applied on the coated fabric in advance and/or simultaneously to impart antistatic and antifouling properties. 3. The method for producing a colored cloth material according to claim 2, wherein a cloth made of a pile yarn of polyester or polyamide is used.