KR101394324B1 - Simultaneous printing method of pigment print and colored burn-out - Google Patents

Abstract

The present invention relates to a method for conducting a pigment print and a colored burn-out simultaneously and, more particularly, to a method for conducting a pigment print and a colored burn-out simultaneously which can dye and conduct a burn-out simultaneously in a one-step continuous process by reducing the existing two-step process of a pigment print, coloring and burn-out to one step. The method for conducting pigment print and colored burn-out simultaneously according to the present invention comprises the steps of: preparing a pigment color paste and a colored burn-out paste as a pigment print color paste for conducting pigment print and colored burn-out simultaneously (S1); printing the pigment print color paste and the colored burn-out color paste on textiles respectively (S2); thermally treating the textiles having the paste printed thereon (S3); and washing the thermally treated textiles with water (S4).

Description

TECHNICAL FIELD [0001] The present invention relates to a method for simultaneous processing of pigment printing and coloring burnout,

The present invention relates to a method for simultaneous processing of pigment printing and coloring burnout, and more particularly, to a method for simultaneously processing dyeing and burnout in a 1-step continuous process by shortening the printing, coloring and burn- And a method for simultaneous processing of pigment printing and coloring burn-out which can be carried out at the same time.

Clothing fiber is a means of expressing individual personality and character rather than physical characteristics such as strength, durability (fastness), and functionality of end products, and it is important to emphasize the external and sensual areas such as design, It is a trend of industry.

Apparel is one of the rituals for human beings, but the speed of development of textile materials is almost at the peak, and the speed of development is very slow. The sensual technologies of textile materials regarding design, color, In addition, the colors and designs that have been used in the past are new and are born with retro in the near future.

However, recent domestic and international trends are causing consumers to feel uneasy. In the domestic market, factors such as prolonged economic recession, consumer sentiment contraction, inflation, rape and presidential elections, and conflicts between diplomatic relations between Korea and China , Global economic recession, and disaster.

For the above reasons, consumers 'anxiety is changing in consumers' purchasing minds about color and design in apparel products, and consumers are increasingly desiring to purchase colorful and brightly colored fluorescent apparel.

There are generally four types of printing methods for forming color patterns on knitted and woven fabrics, depending on the method of printing or printing: screen printing, roller printing, rotary printing and digital printing.

However, this printing method has a limitation in overcoming the monotony of the fabric because the design or the pattern is flat, and it is a method for appealing the consumer to the printing process by processing the chemicals on the surface of the fabric, burn-out process has recently been developed.

In general, burnout processing uses a difference in solvent to dissolve, so it is possible to express a three-dimensional design by partially elaborating a transparent pattern by eluting a single fiber of mixed fibers of fibers having different properties, or by lace-processing, It is a special processing method that gives effect.

The burnout process can be classified into acid burnout and alkali burnout, which is called burnout by dissociation of secondary bonds between polymer chains inside the fiber by acid or alkali chemicals. Cellulosic fibers such as cotton, hemp, rayon, tencel and the like are used for the fiber material eluted by the acid burnout using the acid, and polyester fiber is most used as the skeleton material for acid burnout since it is stable in acid .

The acid burnout processing method for such a cellulose / polyester blend product has a disadvantage in that the color is exclusively formed because it forms only a specific pattern. Thus, a color burnout processing method has been proposed in which disperse dyes are added to a chemical for burnout to color polyester fibers simultaneously with burn-out.

At present, alkaline burn-outs are commonly used in color burn-out techniques of polyester pile fabrics used with dyes. This method utilizes the property that the polyester is dissolved by alkali, and when a polyester dye is printed on a strong alkaline aqueous solution such as caustic soda mixed with a disperse dye, the dye is dyed and the pile fabric is melted with a concave pattern at the same time . However, alkaline colored burnout products are limited to pile fabrics mainly used for bedding, and there are no developments in knitted products for clothing.

Despite the appearance of consumer needs and color burnout technology, the reason for the slow development of cotton blend knit products is due to the absence of dyes that simultaneously dye cotton and two polyester fibers. The surface is dyed with a reactive dye and the polyester is dyed with a disperse dye. Since a cotton blend knit has a mixed cotton and polyester component of about 50:50, the polyester is not dyed when it is dyed with a reactive dye, When dyed with disperse dyes, the cotton is not dyed and there is a limit to the color representation of the color.

In addition, fluorescent dyes are required for the expression of bright colors desired by consumers. However, there are no fluorescent color dyes in the reactive dyes for the cotton, and the alkali components used for the reactive dyes in the dyeing of the cotton fibers are required for the neutralization reaction with the acids used for the cotton burnout It is difficult to perform color matching of the color and the burn-out effect is deteriorated.

On the other hand, the knitted products have a large shape change due to the tensile force during the dyeing process, and many techniques are required for heat treatment for knitting, processing using rollers, and heat setting. Particularly, it is difficult to commercialize the product because it is difficult to make the pint (pint: precisely match the front pattern and the back pattern) when applying the printing process for the burnout process and the additional printing process for coloring the burned- to be.

In order to develop consumer demand trends and various colorful cotton blend knit products, it is necessary to develop printing technology that fuses two or more printing processes such as pigment, pigment printing, burnout, and discharge printing.

The first of the cotton blend knit fusing technology is a dispersive blend and dyeing burnout simultaneous printing technology in which a polyester material is dyed with a disperse dye and a color burn out is performed using a disperse dye and an organic acid. This technology uses dispersive dyes and organic acids, and it is not a big difficulty due to the nature of the technology. However, there is a limit of color expression by dyeing only polyester among the components of cotton blend knit.

The second fusion technique involves reactive dyeing and color burn-out techniques in which reactive dyes are used to dye cotton and dye-out with disperse dyes and organic acids. This technology has disadvantages such as burnout effect and loss of color due to curing, saponification, and neutralization of color arc due to reaction of alkali and acid used in reactive dyeing and burnout printing. This technology also makes it difficult to express dark colors by dyeing cotton fiber parts of cotton blend knit materials, and it is impossible to express bright colors due to the absence of fluorescent dyes.

Therefore, in the development of this technology, pigments are used in place of reactive dyes and disperse dyes to devise a pigment printing process and a coloring burn-out printing fusion process. Pigment is much brighter and more expressible than disperse dye and reactive dyestuff. And it can be said that the coloring material is superior to other dyes especially in products mixed like cotton blend knit.

The burn-out process for a conventional cotton knitted fabric product is performed in the order of "pre-processing -> dyeing ->burn-out" as shown in FIGS. 1A to 1B. Step process.

That is, the product is completed by dyeing the cotton (FIG. 1A) or polyester (FIG. 1B) parts in a dyeing plant in a first step and burning out a cotton part in a second printing step. Therefore, tone-on-tone type printing products are mainly used, in which the bottom surface of the fabric and the burned-out portion have the same color. Or color & white products composed of dyed and white colors.

In addition, dyeing and burnout are carried out at two different stages in different factories, which raises the unit price and delays in delivery due to an increase in the processing time. In particular, the domestic market, such as the large wholesale market, is currently experiencing difficulty in order receipt in response to demand for quick delivery.

In addition, in order to simplify the process by the 1-step continuous process in the printing process, it is difficult to produce the product due to a high risk of badness such as a decrease in the burn-out effect and a decrease in the dyeing or quality due to the collision and neutralization reaction between the printing and burnout preparation.

In addition, reactive dyes for cotton fibers are difficult to express fluorescent colors, but pigment printing can be expressed in bright fluorescent colors. However, there is a problem that the pigment printing is poor in daylight and friction fastness, but in the development of this technology, it is intended to improve the fastness through roller printing printing technology.

On the other hand, according to the prior art, a printing and color burn-out technique using a pigment is disclosed. For example, a Korean patent (10-0925019) discloses a printing and color burn-out technique using pigments, which firstly prints the surface with a pigment, and uses an open and regular moist heat system. This technique has a disadvantage in that the friction fastness is poor, and the wet heat system has a disadvantage in that it has a higher energy cost and a longer processing time than the dry method.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to shorten the printing, coloring and burn- The present invention provides a method for simultaneous processing of pigment printing and coloring burn-out.

The problems to be solved by the present invention are not limited to those mentioned above, and other problems to be solved can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the present invention provides a method for simultaneous processing of pigment printing and coloring burnout, comprising the steps of: (S1) preparing a pigment color and a coloring-out color as a printing color for simultaneous printing and coloring burnout; (S2) passing the pigment color and the coloring-out color on the fabric, respectively; (S3) heat treating the passed fabric; And washing the heat-treated raw fabric (S4).

The method of simultaneously processing pigment printing and coloring burnout according to the present invention is characterized in that the pigment color is 1 to 10% by weight of pigment, 8 to 15% by weight of pigment binder, 5 to 15% by weight of emulsion, 1 to 4% And water of the remainder, wherein the colored burnout coloring comprises 1 to 5% by weight of a disperse dye, 15 to 30% by weight of a gum (10% aqueous solution), 40 to 60% by weight of a burning agent, By weight, and water of the remainder.

In addition, the method for simultaneous processing of pigment printing and coloring burn-out according to the present invention is characterized in that the burn-out chemical is one of an organic acid or an organic acid salt or a mixture thereof.

Further, in the method of simultaneous processing of pigment printing and coloring burnout according to the present invention, the step S2 is a roller printer method having a pressure bowl and a design roll to be pressed thereon, A plurality of preceding design rolls and a trailing design roll are sequentially provided so that the preceding design roll passes the pigment color arc and the trailing design roll passes the coloring burnout color.

The method for simultaneous processing of pigment printing and coloring burnout according to the present invention may further comprise a preliminary drying step (S21) after the drying in step S2, wherein the preliminary drying condition is 1 to 5 minutes .

The method for simultaneous processing of pigment printing and coloring burnout according to the present invention is characterized in that the step of S3 is a dry heat treatment method.

The method for simultaneous processing of pigment printing and coloring burnout according to the present invention is characterized in that the dry heat treatment method uses a far infrared ray heat treatment method and the heat treatment condition is at a temperature of 170 to 190 ° C for 1 to 5 minutes.

According to the method of simultaneous processing of pigment printing and coloring burn-out according to the present invention having the above-mentioned constitution, the printing, coloring and burn-out processes which have been carried out over the two steps are shortened to one step, It is possible to provide a process capable of simultaneously performing burn-out.

The effects attained by the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

Fig. 1A is an exemplary view showing a case where a cotton material of a cotton blend knit according to the prior art is dyed and then a general burn out is performed. Fig.
Fig. 1B is an example of a case where a polyester material of a cotton blend knit according to the prior art is dyed and then a general burn out is performed. Fig.
Fig. 2 is an overall process flow chart in the simultaneous processing of pigment printing and coloring burnout according to the present invention. Fig.
3 is a conceptual diagram of a process flow of roller printing in a simultaneous processing method of pigment printing and coloring burnout according to the present invention.
FIG. 4 is a conceptual diagram of a roller printer blade system for roller printing in a method for simultaneous processing of pigment printing and coloring burnout according to the present invention. FIG.
5 is a conceptual diagram of a far infrared ray heat treatment system in a simultaneous processing method of pigment printing and coloring burnout according to the present invention.
Fig. 6 is an exemplary view of a general burnout processing method, a color burnout processing method, and a product processed by the simultaneous processing method of pigment printing and coloring burnout according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the following description. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

FIG. 1A is a view showing a state where a cotton material of a conventional cotton knitting blend knitted fabric is dyed, and then a general burn out is shown. FIG. 1B is a view showing a state in which a conventional polyester knitted fabric knitted fabric is dyed, FIG. 2 is an overall process flow chart of a method for simultaneous processing of pigment printing and coloring burn-out according to the present invention, and FIG. 3 is a flowchart illustrating a process of simultaneous processing of pigment printing and coloring burn- FIG. 4 is a conceptual diagram of a roller printer blade system for roller printing in the method of simultaneous processing of pigment printing and coloring burnout according to the present invention. FIG. 6 is a conceptual diagram of a far-infrared heat treatment system, and FIG. 6 is a schematic view of a conventional burnout processing method, a color burnout processing method, and a pigment printing and coloring burnout simultaneous processing processing In an example of the processed products by Fig.

As described above, the present invention can shorten the printing, coloring, and burn-out processes that have been performed in the conventional two steps to one step, and simultaneously perform pigment printing and coloring burn-out ≪ / RTI >

More specifically, the simultaneous processing method for pigment printing and coloring burnout according to the present invention includes a step S1 of preparing a pigment color and a coloring-out color as a printing color for simultaneous printing and coloring burn-out, ; (S2) passing the pigment color and the coloring-out color on the fabric, respectively; (S3) heat treating the passed fabric; And washing the heat-treated fabric (S4).

In the present invention, the fabric may be composed of a sand paper (B / W or B / O) suitable for printing or a dyeing cloth and is not particularly limited thereto.

Further, in the present invention, the printing colors for simultaneous processing of pigment printing and coloring burn-out are composed of a pigment color and a colored burnout color. More specifically, the pigment color comprises 1 to 10% by weight of pigment, 8 to 15% 5 to 15% by weight of emulsion, 1 to 4% by weight of thickener, and the balance water.

The pigment may be a known pigment sold in the market, and it is a liquid phase mixed with water. It is used to print cotton or polyester fabric, and it is not necessary to constitute heat treatment and washing process when only pigment is printed.

The pigment binder is a material for bonding the pigment to the fabric fibers, and an acrylic binder may be used. If the content of the pigment binder is too high, the skin feel becomes rough. On the contrary, if the content of the pigment binder is too low, the adhesive strength is weakened.

In addition, the emulsion is a medicament which allows the pigment, the pigment binder and water to be mixed with each other, and the thickener adjusts the viscosity of the pigment color coke, and adjusts printing and workability appropriately.

On the other hand, the coloring-out color is preferably a coloring-out color of 15 to 30% by weight of a disperse dye, 1 to 5% by weight of a gum (10% aqueous solution), 40 to 60% by weight of a burn- . ≪ / RTI >

The disperse dye may be a dye for polyester dyeing, and a heat treatment and a washing process are required at a high temperature (about 180 ° C). It is strong in acidity, so it is a dye that can 'stain' in color burnout with strong acid.

The gum is a mediator capable of transferring the dye to the surface of the fabric fiber, and temporarily serves as an adhesive binder until washing. It is also used as a fiber for controlling blurring, dyeing, sharpness and the like. Since the burn-out chemical is acidic, it is more preferable to use gum guar which is stable to acidity. In addition, it is more preferable to mix with water in advance before adding to the coloring burn-out color so as to remove bubbles or the like and prepare a 10% aqueous solution.

In addition, in the simultaneous processing of pigment printing and coloring burnout according to the present invention, the burnout medicine may be composed of one of organic acid or organic acid salt or a mixture thereof. That is, the burn-out chemical uses sulfuric acid as a strongly acidic chemical for decomposing cotton fibers, and other organic acids such as hydrochloric acid and acetic acid, salts thereof, and mixtures of the organic acids and organic acid salts.

In the present invention, a chemical called BO-CG (Hanson Industries Co., Ltd.), which is stabilized in operation and modified by mixing sulfuric acid and sulfate, was used. To further improve the burnout efficiency, 1 to 3% .

In addition, the glycerin serves to protect the color burnout color from spreading when the color burnout color is transferred to the surface of the fabric to thereby sharpen the boundary line when coloring and burnout occurs.

Next, the pigment color and the coloring-out color prepared in the step S1 are respectively passed on to the fabric (step S2).

In the present invention, the printing head of the printing color for simultaneous pigment printing and coloring burn-out consisting of the pigment color and the coloring burnout color in the step S2 is a roller printer method comprising a pressure bowl and a design roll to be pressed thereto Wherein the design roll is comprised of one or more preceding design rolls and a trailing design roll sequentially so that the preceding design roll passes the pigment color arc and the trailing design roll passes the coloring burnout color .

That is, as shown in FIG. 3, the roller (1), the pressure bowl (10), and the design roll (4) , 5) and 6), and the design roll is composed of 3 to 4 design rolls.

More specifically, as shown in Fig. 4, the pigment printing primarily performed is performed in the preceding design rolls (1 to 2 in Fig. 4), and the coloring burnout is performed in the subsequent design rolls (3 to 4 ), All processes are performed simultaneously.

The design roll should be finely gravure-engraved on its surface and the respective colors (pigment color and colored burnout color) should be transferred to the fabric surface through the grooves of the engraved surface. The depth of the groove on the surface of the design roll is referred to as depth, and the depth (pick-up rate) of the color arc penetrating through the fabric can be controlled through the depth adjustment. In addition, since all the design rolls are pressed onto the pressure balls and the edges progress, the colors or colors of the rolls by the preceding design rolls can affect the color or tinge of the rolls due to the trailing design rolls. That is, overlay printing of a color arc causes a pigment color and a color burnout color arc to collide with each other, resulting in a problem such as hardening of a color arc, smearing, deterioration of a burnout effect, etc. Therefore, , The blend colors should be adjusted appropriately and the design rolls must be turned in the proper sequence.

As a result, in the present invention, the constituent material and composition ratio of the pigment color and the coloring burn-out color fundamentally solve the problem of the double-headed day so as to achieve the method of simultaneously processing the pigment printing and coloring burn- There is a critical significance of numerical limitation.

The method for simultaneous processing of pigment printing and coloring burnout according to the present invention further comprises a preliminary drying step (S21) after the drying in step S2, wherein the specific preliminary drying conditions are 1 to 5 minutes at 80 to 120 DEG C It is more preferable to proceed. When the temperature of the preliminary drying step is lower than 80 ° C, each coloring compound liquid remains on the drying cylinder, and then the conduction dye occurs in the color, and when it is higher than 120 ° C, the yellowing Etc. may occur.

Next, the fabric moved in step S2 is heat-treated (step S3).

In general, heat treatment is not performed in the case of pigment printing, but since the present invention is a simultaneous operation of pigment printing and coloring burn-out, heat treatment is performed for color burn-out. More specifically, for dyeing disperse dye used in color burn- A high-temperature heat treatment of about 190 ° C is required. The heat treatment time is preferably about 1 to 5 minutes.

If the heat treatment temperature is lower than 170 ° C, poor fastness and poor color tone may be caused due to poor adhesion. If the temperature is higher than 190 ° C, yellowing, pyrolysis or melting may occur. Lt; / RTI >

The heat treatment method uses a dry heat treatment method, and a dry heat treatment method using a far infrared ray heat treatment machine having a short heat treatment time and a low operation cost can be used. The problem of poor friction fastness due to pigment printing by the heat treatment of far infrared rays Can be solved. Optimum far infrared heat treatment conditions are 185 ℃ * 30m / min and heat treatment time is about 1 ~ 2 minutes. As shown in FIG. 5, in the far infrared ray heat treatment apparatus according to the present invention, the length from the F-IR lamps (3 in FIG. 5) to the net belt (2 in FIG. 5) is about 20 cm, It is about 45m.

Next, the heat-treated fabric is washed with water including a dehydration process (S4).

Washing is a process in which a disperse dye added at the time of coloring burn-out, a disperse dye which is not dyed, a gum and a binder as a printing medium, and other remaining preparations are washed out through water. It is preferable to use a soaping agent such as a soap for smooth washing and to conduct it at a temperature of about 40 to 80 DEG C * 30 m / min through WINCH centuries. The dehydration preferably proceeds for 5 to 8 minutes.

Finally, as a post-processing step, the disassembled cotton fiber remnants remaining in the fibers can be desorbed and tentered for dryness and width fixing. Spray-washing or tumble-drying may be performed to secondarily remove the shrinkage-fixed and disassembled cotton fiber residues.

Meanwhile, FIG. 6 is an example of a general burnout processing method, a color burnout processing method, and a product processed by the method of simultaneous processing of pigment printing and coloring burnout according to the present invention, 6 (c) and 6 (d)), the coloring burnout processing method (FIG. 6 (b)) and the pigment printing and coloring burnout simultaneous processing method Of the product.

6, in comparison with the general burn-out processing method (FIG. 6A) and the color burn-out processing method (FIG. 6B) of the cotton blend knit product, 6 (c) and (d) of FIG. 6), uniform multicolor pigment printing and color burn-out were performed in a single process, whereby a brilliant color of a vivid color can be expressed, .

In addition, washing fastness and fastness to rubbing were evaluated for the products processed by the simultaneous processing of pigment printing and coloring burnout according to the present invention.

The wash fastness test is to measure the extent to which the dye is changed in color by washing or contaminated with other fabrics and the result is judged to be 3 to 4 or higher in the case of apparel products in general quality standards, The fastness test is a test to determine the degree of contamination from the surface of dyed material to another cloth by friction. It is intended to test the degree to which contamination of underwear or dyestuff used as housewares is contaminated with other clothing when wearing clothing It is strictly regulated by various quality standards and should generally be at least grade 3 under normal dry conditions and at least grade 2 under wet conditions.

In the present invention, the wash fastness test was carried out according to KS K ISO 105-C06: 2007, A2S, 40 ° C, 30 minutes, 0.4% detergent, 0.1% sodium borate and 10 beads) The above rubbing fastness test was carried out according to KS K 0650: 2011 croquette method, and the rubbing fastness under each of the conditions of drying and wetting was evaluated according to the following evaluation criteria. The results of each evaluation are classified into five grades of 1 to 5, which means that the higher the grade, the better.

According to the washing fastness test results of the products processed by the simultaneous processing of pigment printing and coloring burnout according to the present invention, the rub fastness ratios ranged from 4 to 5 and the rubbing fastness was classified into 4 grades and 3 to 4 And all of them satisfied the quality standard.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims (7)

(S1) preparing a pigment color and a coloring-out color as a printing color for simultaneous processing of pigment printing and coloring burn-out;
(S2) passing the pigment color and the coloring-out color on the fabric, respectively;
(S3) heat treating the passed fabric; And
(S4) washing the heat-treated fabric,
Preferably,
1 to 10% by weight of a pigment, 8 to 15% by weight of a pigment binder, 5 to 15% by weight of an emulsion, 1 to 4% by weight of a thickener,
The coloring burn-out color is a color-
Characterized in that it comprises 1 to 5% by weight of a disperse dye, 15 to 30% by weight of gum (10% aqueous solution), 40 to 60% by weight of a burning agent, 3 to 6% by weight of glycerin, And coloring burnout simultaneously.
delete The method according to claim 1,
Wherein the burn-out chemical is one of organic acid or organic acid salt or a mixture thereof.
The method according to claim 1,
In the step S2,
There is provided a roller printing method comprising a pressure bowl and a design roll to be pressed thereto, wherein the design roll is sequentially provided with one or a plurality of preceding design rolls and a following design roll, And said trailing design rolls said coloring burnout color. ≪ RTI ID = 0.0 > 8. < / RTI >
The method according to claim 1,
In the step S2,
Wherein the preliminary drying is performed at a temperature of 80 to 120 DEG C for 1 to 5 minutes. The method according to claim 1,
In the step S3,
Characterized in that a dry heat treatment method is used.
The method according to claim 6,
Wherein the dry heat treatment method uses a far infrared ray heat treatment method and the heat treatment condition is a temperature of 170 to 190 ° C for 1 to 5 minutes.

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