JP2016160341A - Ink set and method for producing opal-finished fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink set capable of performing an opal finishing in a high quality manner to a fabric including at least two kind of fibers and of coloring the fabric while pattern and see-through pattern to be applied to the fabric suffering less restriction in design.SOLUTION: There is provided an ink set according to the present invention which performs an opal finishing to a fabric including a first fiber and a second fiber and colors the fabric by an inkjet method. The ink set comprises: an etching ink containing an etching agent which leaches the first fiber and cannot leach the second fiber; and a pigment ink including a pigment that can dye the first fiber and the second fiber.SELECTED DRAWING: None

Description

  The present invention relates to an ink set and a method for producing an opal processed fabric.

  2. Description of the Related Art Conventionally, as a technique for processing fibers, a discharge process is known in which a part of fibers constituting a fabric (fabric) is broken and leached to partially create a watermark or make a hole. Such a discharging process can be performed using an ink jet method, and can be performed by discharging a discharging ink containing a discharging agent from a nozzle of a recording head and attaching it to a fabric. Also, the process of leaching at least one type of fiber to create a watermark pattern in a fabric woven using a plurality of different types of fibers is called opal processing. Can be done.

  For example, Patent Document 1 discloses an opal-processed fabric composed of an extraction portion made of nylon fibers, a colored polyester fiber layer, and a non-extraction portion made of an uncolored nylon fiber layer. Has been. Further, Patent Document 2 discloses that a pattern is formed at a completely removed portion, a partially removed portion, and an unexposed portion of a modified polyester fiber. And it is thought that a fabric with high designability can be manufactured if the technique of dyeing is combined with such opal processing.

  On the other hand, conventional textile printing has been performed using a printing method using a plate or a screen printing method. However, in recent years, since a plate is not required and it can be used for a wide variety of small quantities, an inkjet method is used. The textile printing technology using garnet has attracted attention and has been put into practical use.

  If these processes can be carried out continuously using an ink jet method, the productivity of the fabric will be improved, and the convenience will be excellent. For example, Patent Document 3 discloses a portion that has been removed by an inkjet method using an opal processing ink set that includes an opal processing ink for cellulosic fibers containing ammonium sulfate and an ink for dyeing acid-resistant fibers. Staining is disclosed.

Japanese Patent No. 5006792 Japanese Patent Laid-Open No. 06-136684 Japanese Patent No. 5060235

  If the opal processing and coloring of the fabric are sequentially performed in the order of opal processing, cleaning, coloring, and cleaning, the number of steps increases. In addition, since any ink is applied after washing, the position where the ink is attached may be shifted due to the shrinkage of the fabric or the like. For this reason, it is desirable that the opal processing and coloring using the inkjet method be performed by a single printing operation in order to make use of the gradation and high definition.

However, when the opal processing and coloring of the interwoven fabric are performed at the same time, an area where the opal processing and coloring are insufficient may occur unexpectedly depending on the type of fiber of the fabric and the combination of inks used. . The discharge ink used for opal processing usually has an acid or alkali property, and the dye ink used for coloring usually colors (dyes) the fiber with a chemical reaction. Therefore, if the discharge ink and the dye ink or the pretreatment ink for dyeing chemically interfere with each other due to neutralization or the like, the area to which the discharge ink is applied for opal processing and the dye for coloring. A region where opal processing and coloring are insufficient is likely to occur at the boundary with the region to which ink has been applied.

  In particular, in an interwoven fabric of cellulosic fibers and other fibers (polyester, nylon, etc.), the cellulosic fibers are extracted with an acid extraction ink and opal processed, and the non-extracted parts of the cellulosic fibers are reacted. In the case of coloring with a reactive dye ink, an alkaline agent of a pretreatment ink applied to a non-extraction portion for reaction of the reactive dye ink and a discharge agent of an extraction ink applied to the discharge portion ( Acid) is neutralized, so that a region where opal processing and coloring are insufficient is likely to occur at the boundary between the non-excavated portion and the excised portion.

  Therefore, when performing opal processing and coloring of unwoven fabrics at the same time, such a phenomenon is conventionally accepted by, for example, incorporating the remaining border without being discharged or colored into the design (pattern) of the fabric. It was. Thus, in order to perform the opal processing and coloring of the union cloth at the same time and to give the unwoven cloth a design without a border, the combination of the discharge ink and the dye ink is restricted, and the free design of the cloth is restricted. It was.

  One of the objects according to some embodiments of the present invention is to provide a high-grade opal processing that is not easily limited by a design and a design of a watermark applied to a fabric (fabric) including at least two kinds of fibers. It is an object of the present invention to provide an ink set that can be colored simultaneously. In addition, one of the objects according to some aspects of the present invention is to provide a high-quality opal that is not easily limited by the design and watermark design to be applied to a fabric (fabric) including at least two types of fibers. An object of the present invention is to provide a method for producing an opal processed fabric that can be processed and colored simultaneously.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following aspects or application examples.

[Application Example 1] One aspect of the ink set according to the present invention is as follows.
An ink set for performing opal processing and coloring by an ink jet method on a fabric including first fibers and second fibers,
A discharge ink containing a discharge agent capable of leaching the first fibers and not leaching the second fibers;
A pigment ink containing a pigment capable of dyeing the first fiber and the second fiber;
Is provided.

  According to such an ink set, the discharge ink and the pigment ink are unlikely to interfere chemically, so even if the opal processing and coloring are performed at the same time, it is difficult to generate a region where the opal processing and coloring are insufficient. Can do. Therefore, it is possible to relax restrictions on the arrangement (design) of patterns and watermarks and increase the degree of freedom of design.

  In the present specification, “simultaneously performing opal processing and coloring” not only refers to an aspect in which the discharging ink and the coloring ink are applied to the fabric at the same timing, but also the discharging ink and the coloring ink. Ink is applied to the fabric at different timings, but the other ink is applied to the fabric in a state where one ink is not removed from the fabric, so that both inks are present in the fabric. This aspect is also included. That is, if both the discharging ink and the ink for coloring are present in the cloth before the cloth on which the opal processing and coloring is performed is washed, the opal processing and coloring are performed at the same time. To do.

[Application Example 2] In Application Example 1,
The first fiber may be a cellulosic fiber.

  According to such an ink set, a more favorable opal process can be performed on a fabric containing cellulosic fibers.

[Application Example 3] In Application Example 2,
The extractant may be at least one of sodium hydrogen sulfate, aluminum sulfate, and ammonium sulfate.

  According to such an ink set, cellulosic fibers can be leached more efficiently, and the fabric can be further opalized.

[Application Example 4] In any one of Application Examples 1 to 3,
You may further provide the dye ink containing the dye which dye | stains the said 2nd fiber.

  According to such an ink set, it is possible to color the second fiber with good color developability with the dye ink. A portion where the first fiber is leached by the discharging ink is defined as a first region, and a portion where the first fiber is not leached by the discharging ink and the first fiber and the second fiber are dyed by the pigment ink is defined as a first region. In the case of two regions, the dye ink can color at least the second fibers remaining in the first region. If the first region is dyed with the dye ink, an opal-processed fabric with better color development in the first region can be produced. The dye ink can be applied to both the first region and the second region. In this case, the second fibers in the second region can also be dyed with the dye ink. By applying both pigment ink and dye ink to the second fiber in the second region, not only the surface of the second fiber is dyed by the pigment ink but also the inside of the second fiber by the dye ink. Since it is dyed, it is possible to produce an opal processed fabric having a higher color developability in the second region.

  In this specification, the term “coloring” refers to coloring a target (fiber), and is intended to be used as a superordinate concept of dyeing and dyeing. Further, coloring with pigment ink is sometimes referred to as dyeing, and coloring with dye ink is sometimes referred to as dyeing.

[Application Example 5] In Application Example 4,
The second fiber may be a polyester fiber, and the dye may be a disperse dye or a sublimation dye.

  According to such an ink set, the second fibers can be more easily colored with good color development.

[Application Example 6] One aspect of a method for producing an opal processed fabric according to the present invention is as follows.
Preparing a fabric including a first fiber that is leached by an extractant and a second fiber that is not leached by the extractant;
Applying a discharge ink containing the discharge agent to the first region of the fabric by an inkjet method;
Applying a pigment ink containing a pigment to at least a second region other than the first region of the fabric by an inkjet method;
Heating the fabric;
Washing the fabric;
Have

According to such a manufacturing method, the discharge ink and the pigment ink are less likely to chemically interfere with each other, and even if the first region and the second region are adjacent to each other, the end region is colored to the end, An opal-processed fabric with few uncolored regions can be produced. According to such a manufacturing method, unintentional edging is unlikely to occur. Therefore, the degree of freedom in opal processing and coloring design can be increased for a fabric (fabric) including at least two types of fibers. Note that the pigment may be applied not only to the second region but also to both the first region and the second region.

[Application Example 7] In Application Example 6,
The first fiber may be a cellulosic fiber.

  According to such a production method, an opal processed fabric containing cellulosic fibers can be easily produced.

[Application Example 8] In Application Example 7,
The extractant may be at least one of sodium hydrogen sulfate, aluminum sulfate, and ammonium sulfate.

  According to such a production method, the cellulosic fibers can be more stably leached, and an opal processed fabric containing cellulosic fibers can be produced more easily.

[Application Example 9] In any one of Application Examples 6 to 8,
You may further have the process of providing the dye ink containing dye to the said 1st area | region at least by the inkjet method.

  According to such a manufacturing method, since at least the second fibers in the first region can be dyed with the dye ink containing the dye, it is possible to manufacture an opal processed fabric with better color developability in the first region. It is also possible to apply this dye ink to both the first region and the second region. In this case, the second fibers in the second region can also be dyed with the dye ink. If both the pigment ink and the dye ink are applied to the second fibers in the second region, not only the fiber surface is dyed by the pigment ink but also the inside of the fiber is dyed by the dye ink. An opal-processed fabric with higher color developability in two regions can be produced.

[Application Example 10] In Application Example 9,
The second fiber may be a polyester fiber, and the dye may be a disperse dye or a sublimation dye.

  According to such a manufacturing method, an opal-processed fabric with good color development can be manufactured more easily.

The top view which represents typically the opal process of the fabric which concerns on embodiment, and the mode of coloring. The top view which represents typically the opal process which concerns on a prior art example, and the mode of coloring.

  Embodiments of the present invention will be described below. Embodiment described below demonstrates an example of this invention. In addition, the present invention is not limited to the following embodiments, and includes various modifications that are implemented within a range that does not change the gist of the present invention. Note that not all of the configurations described below are essential configurations of the present invention.

1. Ink set The ink set of this embodiment is an ink set for performing opal processing and coloring with respect to the fabric containing the 1st fiber and the 2nd fiber by the ink jet method. And the discharging ink containing the discharging agent which leaches out the 1st fiber, and the pigment ink containing the pigment which can dye the 1st fiber and the 2nd fiber are provided.

1.1. Fabric The fabric to which the ink set of the present embodiment is applied includes first fibers and second fibers. A 1st fiber is a fiber which can be leached with the discharging agent contained in the discharging ink mentioned later. The second fibers are fibers that are not leached by the discharging agent contained in the discharging ink (or fibers that are less leached than the first fibers). The fabric may include fibers other than the first fibers and the second fibers. The content of the first fiber and the second fiber contained in the fabric is not particularly limited.

  In the case where the discharge ink contains an acidic discharge agent, a specific example of the fiber that is easily leached is cellulosic fiber. On the other hand, specific examples of fibers that are not easily leached by an acidic extractant include, for example, polyester fibers, polyamide fibers (wool, silk, wool, nylon (ε-caprolactam polymer, condensation of hexamethylenediamine and adipic acid). Body) and the like, and polyolefin fibers and the like.

  When the discharge ink contains a basic (alkaline) discharge agent, specific examples of fibers that are easily leached are polyester fibers, polyamide fibers (wool, silk, wool, nylon (ε-caprolactam). Polymer, a condensation product of hexamethylenediamine and adipic acid, etc.)) and the like. On the other hand, specific examples of fibers that are difficult to be leached by a basic extractant include cellulose fibers and polyolefin fibers.

  Moreover, although the fabric which concerns on this embodiment contains the above-mentioned 1st fiber and 2nd fiber, these twisted and mixed spinning may be sufficient as these fibers. Further, as the fabric, the above-described fibers may be any form such as a woven fabric, a knitted fabric, and a non-woven fabric. Moreover, the thickness, fiber density, etc. of a fabric are not specifically limited. As a mode in which the “fabric includes the first fiber and the second fiber”, (1) a mode in which the fibers constituting the fabric are the ones in which the first fiber and the second fiber are twisted or mixed, and (2) the cross weaving A mode in which a fabric is constituted by a plurality of types of fibers by cross knitting, etc., of which at least one type of fiber is a first fiber and at least one type of fiber is a second fiber, (3) by cross knitting, cross knitting, etc. A fabric is constituted by a plurality of types of fibers, of which at least one type is a fiber of (1), and (4) an mode of any combination of the above (1) to (3).

  Among such fabrics, it is preferable to use a fabric containing cellulosic fibers and polyester fibers widely used as a fabric for opal processing.

  More specific examples of cellulosic fibers include natural cellulose fibers (for example, vegetable fibers such as cotton and hemp), synthetic fibers having a cellulose skeleton (for example, rayon, lyocell, cupra, acetate, etc.), and modifications thereof. Fiber. A plurality of types of cellulosic fibers may be twisted and mixed.

  More specific examples of the polyester fiber are not limited as long as the fiber is formed of a polymer having an ester bond. For example, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polylactic acid, polytrimethylene terephthalate. And their modified products and the like. A plurality of polyester fibers may be twisted and mixed, or may be a composite fiber.

When the ink set of the present embodiment is applied to a fabric containing cellulosic fibers and polyester fibers, if an acid discharge agent is included in the discharge ink, the cellulosic fibers can be leached and basic. If the extractant is contained, the polyester fiber can be leached.

  Examples of such commercially available fabrics include the trade name “E / C Mixed Opal III” (manufactured by Nanaka Tanaka Dye Store, thin fabric, material: 50% cotton, 50% polyester), trade name “E / C “Hempo Opal” (Tanaka Nao Dye Store, thick fabric, material: hemp, polyester, cotton; mixing rate unknown), trade name “Hempo No.0801” (manufactured by Chori Co., Ltd., material: polyester 22%, rayon 56) %, Hemp 22%), trade name “Opal Satin No. 9017” (manufactured by Chori Co., Ltd., material: 45% polyester, 55% rayon) and the like.

1.2. Inkjet Opal Processing The opal processed fabric of this embodiment is manufactured by opal processing by an inkjet method. Here, the opal processing is the above-mentioned cloth, in which the cellulosic fiber or polyester fiber (first fiber or second fiber) corresponding to the opal pattern is removed by leaching and breaking to form a watermark pattern on the fabric. It refers to the processing to be performed. Further, in this specification, a region where the opal processing is performed after the fabric is washed may be referred to as “extraction portion”, and a region where the opal processing is not performed may be referred to as “non-extraction portion”.

  Further, in the present embodiment, the discharge ink that can be applied to the discharge process is used. However, in the discharge ink, one of the first fiber and the second fiber is not leached or relatively hardly leached. Since it is applied to a fabric including one fiber and a second fiber, a hole penetrating the fabric is hardly formed. Therefore, although referred to as “exhaust ink” in the present specification, it is not a name that means that an exfoliated fabric (a fabric in which holes have been formed by exfoliation) is formed, but an opal-treated fabric (extracted with an exfoliated ink). Fabrics in which watermarks are formed by erosion) are produced.

  The leaching of the cellulosic fibers or polyester fibers is performed by applying a discharge ink, which will be described later, to the fabric by an inkjet method. That is, in the present embodiment, a so-called ink jet type recording apparatus is used to eject and attach the discharge ink droplets onto the fabric.

  The ink jet recording apparatus usable in the present embodiment controls the discharge timing of the discharge ink from the nozzle and the relative position between the nozzle and the cloth in correspondence with the predetermined pattern, thereby discharging the discharge ink to the predetermined position on the cloth. If it can adhere, it will not be specifically limited. Further, the discharge method of the discharge ink from the nozzle is not limited, and for example, an electrostatic suction method, a piezo method, a thermal jet method, or the like can be applied. In the opal processing of the present embodiment, a so-called serial type or line type may be used as a method for changing the relative position between the nozzle and the fabric.

  A typical inkjet recording apparatus includes an inkjet recording head, a main body, a tray, a head driving mechanism, and a carriage. The ink jet recording head has a plurality of nozzles, and the nozzles communicate with an ink cartridge of predetermined ink (color ink or the like) to discharge the ink. For example, at least one ink cartridge may be filled with the discharge ink, or may be used by forming a cartridge dedicated to the discharge ink and a nozzle communicating therewith. In addition, the ink jet recording apparatus may be configured to eject other ink such as dye ink in addition to the discharge ink. By using such an ink jet recording apparatus, each ink can be easily ejected and adhered (applied) to the fabric, and a predetermined pattern can be formed on the fabric.

The opal-processed fabric (opal-processed fabric) of the present embodiment is such that at least the other fiber is present in the portion (extraction portion) from which the first fiber (cellulosic fiber) or the second fiber (polyester fiber) is leached. The part of the fabric that remains is part of the fabric, and the first fiber (cellulosic fiber) and the second fiber (polyester fiber) remain (not leached). Part of it. And since the amount of fiber is smaller (or smaller in thickness) in the portion where either fiber is leached than the portion where both fibers remain, the portion where the fiber is leached is compared with the portion where the fiber remains. Thus, it is easy to transmit light, whereby a predetermined watermark pattern is formed.

1.3. Inkjet Coloring The opal processed fabric of this embodiment is produced by being colored by the inkjet method. Cellulose fibers and polyester fibers are colored by applying a pigment ink, which will be described later, to the fabric by an inkjet method. That is, in the present embodiment, an ink jet type recording apparatus is used to eject and attach pigment ink droplets onto a fabric and dye them.

  In the present embodiment, the discharge ink and the pigment ink are applied to the fabric by an inkjet method, but the order of application to the fabric is not limited. If a state where both inks are present in the fabric is formed, opal processing and Coloring (dyeing) can be performed simultaneously.

  Here, the term “dyeing” refers to coloring the cellulosic fiber and the polyester fiber (first fiber and second fiber) corresponding to the colored pattern with pigment ink in the above-described fabric. Since the pigment ink is mainly fixed to the surface of the fiber to color the fiber, the coloring mode is different from the dyeing of the fiber with the dye. Therefore, in this specification, the expression dyeing of fibers with pigment ink is used with the intention of being different from dyeing of fibers with dye ink. Further, in the present specification, a region that has been dyed may be referred to as a “dyed portion”, and a region that has not been dyed may be referred to as a “non-dyed portion”.

  The mode of the ink jet method is the same as that described in the section “1.2. Inkjet opal processing”, and in the description of the same section, the “exhaust ink” is explained by appropriately replacing “pigment ink”. Description is omitted.

1.4. Discharge Ink The discharge ink provided in the ink set of the present embodiment contains a discharge agent and water for leaching the first fibers. The discharge ink provided in the ink set of the present embodiment is an ink-jet ink used for opal processing.

<Exhaustant>
The discharge ink according to the present embodiment contains a discharge agent. The discharging agent has a function of destroying and leaching (extracting) the first fibers constituting the fabric. As the pitting agent, a material exhibiting acid or base properties in water can be appropriately selected and used depending on the type of fiber to be leached.

  Examples of the pitting agent that exhibits acidity in water (hereinafter, also simply referred to as “acidic pitting agent”) include hydrochloric acid, sulfuric acid, nitric acid, and salts thereof. Therefore, when the first fiber is a cellulosic fiber, sulfuric acid and sulfate (for example, sodium hydrogen sulfate, aluminum sulfate, ammonium sulfate, iron sulfate, copper sulfate, zinc sulfate, tin sulfate, etc.) are used. It is preferable to use sulfuric acid, sodium hydrogen sulfate, aluminum sulfate and ammonium sulfate. These acidic discharging agents may be used alone or in combination of two or more.

As an extractant exhibiting basicity in water (hereinafter, also simply referred to as “basic extractant”), guanidine and salts thereof, alkali metal (lithium, sodium, potassium, etc.) hydroxide, alkali Examples include hydroxides of earth metals (calcium, barium, etc.), and the first fibers are polyamide fibers or polyester fibers because they are excellent in the removal of polyamide fibers and polyester fibers. It is preferable to use an alkali metal hydroxide (for example, sodium hydroxide, potassium hydroxide, lithium hydroxide) or a guanidine weak acid salt (for example, guanidine carbonate, guanidine acetate). These basic extractants may be used alone or in combination of two or more.

  The content of the discharge agent in the discharge ink is preferably 10% by mass or more and 40% by mass or less, and more preferably 20% by mass or more and 30% by mass or less with respect to the total mass (100% by mass) of the discharge ink. More preferably. When the content of the extractant is 10% by mass or more, the ability to leach fibers is further improved. Further, when the content of the discharging agent is 40% by mass or less, it becomes easy to set the viscosity of the discharging ink within a range suitable for the ink jet system, and the discharge stability of the recording head can be improved. it can. Moreover, coexistence with a discharge ink and the solvent and surfactant used together becomes easy because content of a discharge agent is 40 mass% or less.

<Water>
The discharge ink according to the present embodiment contains water. Water is the main liquid medium of the discharge ink. The water is preferably water from which ionic impurities such as pure water such as ion exchange water, ultrafiltration water, reverse osmosis water, distilled water or ultrapure water are removed as much as possible. The water content can be, for example, 40% by mass or more with respect to the total mass of the discharge ink.

<Organic solvent>
The discharge ink according to the present embodiment may contain an organic solvent from the viewpoint of improving moisture retention and improving permeability to the fabric. Examples of the organic solvent include 1,2-alkanediols, polyhydric alcohols, glycol ethers, pyrrolidone derivatives, and the like.

  Examples of 1,2-alkanediols include 1,2-propanediol, 1,2-butanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, and the like. . 1,2-alkanediols are excellent in the action of increasing the wettability of the ink with respect to the fabric to wet it uniformly. The content when 1,2-alkanediols are contained can be 1% by mass or more and 10% by mass or less based on the total mass of the discharge ink.

  Examples of polyhydric alcohols (excluding the above 1,2-alkanediols) include, for example, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,3-propanediol, 1,4-butanediol, 1, Examples include 6-hexanediol, trimethylolpropane, triethylene glycol, and glycerin. The polyhydric alcohols have functions such as improving the wettability of the ink to the fabric and increasing the moisture retention of the nozzle. When polyhydric alcohols are contained, the content can be 1% by mass or more and 20% by mass or less with respect to the total mass of the discharge ink.

Examples of glycol ethers include ethylene glycol monoisobutyl ether, ethylene glycol monohexyl ether, ethylene glycol monoisohexyl ether, diethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monohexyl ether, triethylene glycol monobutyl ether, and triethylene glycol monomethyl ether. Ether, triethylene glycol monoethyl ether, triethylene glycol monohexyl ether, diethylene glycol monoisohexyl ether, triethylene glycol monoisohexyl ether, ethylene glycol monoisoheptyl ether, diethylene glycol monoisoheptyl ether, triethylene glycol mono Sohptyl ether, ethylene glycol monooctyl ether, ethylene glycol monoisooctyl ether, diethylene glycol monoisooctyl ether, triethylene glycol monoisooctyl ether, ethylene glycol mono-2-ethylhexyl ether, diethylene glycol mono-2-ethylhexyl ether, triethylene Glycol mono-2-ethylhexyl ether, diethylene glycol mono-2-ethylpentyl ether, ethylene glycol mono-2-ethylpentyl ether, ethylene glycol mono-2-ethylhexyl ether, diethylene glycol mono-2-ethylhexyl ether, ethylene glycol mono-2- Methyl pentyl ether, diethylene glycol mono-2-methyl pen Ether, propylene glycol monobutyl ether, dipropylene glycol monobutyl ether, tripropylene glycol monobutyl ether, propylene glycol monopropyl ether, dipropylene glycol monopropyl ether, and tripropylene glycol monomethyl ether, and the like. These can be used individually by 1 type or in mixture of 2 or more types. Glycol ethers can control the wettability of the ink to the fabric. The content when glycol ethers are contained can be 1% by mass or more and 10% by mass or less based on the total mass of the discharge ink.

  Examples of pyrrolidone derivatives include N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, N-vinyl-2-pyrrolidone, 2-pyrrolidone, N-butyl-2-pyrrolidone, and 5-methyl-2-pyrrolidone. Is mentioned. The pyrrolidone derivative has a function of enhancing the solubility of other solvents and the moisture retention of the ink. When the pyrrolidone derivative is contained, the content can be 1% by mass or more and 20% by mass or less with respect to the total mass of the discharge ink.

<Surfactant>
The discharge ink may contain a surfactant. The surfactant has a function of adjusting the wettability with the fabric by reducing the surface tension of the ink. Among the surfactants, acetylene glycol surfactants, anionic surfactants, silicone surfactants, and fluorine surfactants can be preferably used.

  Although it does not specifically limit as acetylene glycol type surfactant, For example, Surfynol 104,104E, 104H, 104A, 104BC, 104DPM, 104PA, 104PG-50,104S, 420,440,465,485, SE, SE- F, 504, 61, DF37, CT111, CT121, CT131, CT136, TG, GA, DF110D (all are trade names, manufactured by Air Products and Chemicals. Inc.), Olphin B, Y, P, A, STG, SPC , E1004, E1010, PD-001, PD-002W, PD-003, PD-004, PD-005, EXP. 4001, EXP. 4036, EXP. 4051, AF-103, AF-104, AK-02, SK-14, AE-3 (all trade names, manufactured by Nissin Chemical Industry Co., Ltd.), acetylenol E00, E00P, E40, E100 (all trade names, river Ken Fine Chemical Co., Ltd.).

  Although it does not specifically limit as an anionic surfactant, For example, Perex SS-H, SS-L, Latem WX, E-150, Neoperex GS, G-15, G-25, G-35 (all goods above) Name, manufactured by Kao Corporation).

Although it does not specifically limit as a silicone type surfactant, A polysiloxane type compound is mentioned preferably. Although it does not specifically limit as the said polysiloxane type compound, For example, polyether modified organosiloxane is mentioned. Commercially available products of the polyether-modified organosiloxane include, for example, BYK-306, BYK-307, BYK-333, BYK-341, BYK-345, BYK-346, BYK-348 (above trade names, manufactured by BYK). , KF-351A, KF-352A, KF-353, KF-354L, KF-3
55A, KF-615A, KF-945, KF-640, KF-642, KF-643, KF-6020, X-22-4515, KF-6011, KF-6012, KF-6015, KF-6017 Name, manufactured by Shin-Etsu Chemical Co., Ltd.).

  As the fluorine-based surfactant, a fluorine-modified polymer is preferably used, and specific examples thereof include BYK-340 (manufactured by BYK Japan).

  When the surfactant is contained, the content can be 0.05% by mass or more and 1.5% by mass or less with respect to the total mass of the discharge ink.

<Other ingredients>
The discharge ink according to the present embodiment may contain various additives such as ureas, sugars, pH adjusters, chelating agents, preservatives, fungicides, and rust inhibitors as necessary. .

1.5. Pigment ink The pigment ink included in the ink set of the present embodiment can dye the first fiber and the second fiber. The pigment ink may be an aqueous pigment ink or an oil pigment ink. Further, the color (color) of the pigment ink included in the ink set of the present embodiment is not limited at all, and pigments of the colors exemplified below can be used for the pigment ink. Although it does not specifically limit as a pigment ink, It is preferable that a pigment and a resin emulsion are included, and it is more preferable that a water-soluble solvent is further included from the reason that the fixability of a pigment improves more. The additives (components) that are or can be contained in the pigment ink will be described.

<Pigment>
Examples of the pigment that can be contained in the pigment ink include carbon black, and the type of the black pigment is not particularly limited. For example, furnace black, lamp black, acetylene black, and channel black (CI Pigment Black 7). ). Further, as a commercially available product of carbon black, for example, No. 2300, 900, MCF88, no. 20B, no. 33, no. 40, no. 45, no. 52, MA7, MA8, MA100, no. 2200B (all trade names, manufactured by Mitsubishi Chemical Corporation), color black FW1, FW2, FW2V, FW18, FW200, S150, S160, S170, Pretex 35, U, V, 140U, Special Black 6, 5, 4A, 4, 250 (all trade names, manufactured by Degussa AG), Conductex SC, Raven 1255, 5750, 5250, 5000, 3500, 1255, 700 (all trade names, manufactured by Columbian Carbon Ltd.) ), Regal 400R, 330R, 660R, Mogul L, Monarch 700, 800, 880, 900, 1000, 1100, 1300, 1400, Elftex 12 All trade name, Cabot Corporation (CabotCorporation) Co., Ltd.), and the like.

  Organic pigments can also be used as black pigments, and are not particularly limited. For example, quinacridone pigments, quinacridonequinone pigments, dioxazine pigments, phthalocyanine pigments, anthrapyrimidine pigments, ansanthrone pigments, indanthones Ron pigments, flavanthrone pigments, perylene pigments, diketopyrrolopyrrole pigments, perinone pigments, quinophthalone pigments, anthraquinone pigments, thioindigo pigments, benzimidazolone pigments, isoindolinone pigments, azomethine pigments Examples thereof include pigments and azo pigments. Specific examples of the organic pigment include the following. An inorganic pigment may be used individually by 1 type, and may be used in combination of 2 or more type.

Examples of cyan pigments include C.I. I. Pigment Blue 1, 2, 3, 15, 15: 1, 15
: 2, 15: 3, 15: 4, 15: 6, 15:34, 16, 18, 22, 60, 65, 66, C.I. I. Bat Blue 4, 60 and the like.

  Examples of magenta pigments include C.I. I. Pigment Red 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 21, 22, 23, 30, 31, 32, 37, 38, 40, 41, 42, 48 (Ca), 48 (Mn), 57 (Ca), 57: 1, 88, 112, 114, 122, 123, 144, 146, 149, 150, 166, 168 170, 171, 175, 176, 177, 178, 179, 184, 185, 187, 202, 209, 219, 224, 245, 254, 264, C.I. I. Pigment violet 19, 23, 32, 33, 36, 38, 43, 50 and the like.

  Examples of yellow pigments include C.I. I. Pigment Yellow 1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 16, 17, 24, 34, 35, 37, 53, 55, 65, 73, 74, 75, 81, 83, 93, 94, 95, 97, 98, 99, 108, 109, 110, 113, 114, 117, 120, 124, 128, 129, 133, 138, 139, 147, 151, 153, 154, 155, 167, 172, 180, 185, 213 and the like.

  The pigment ink can also use a white pigment, such as white inorganic pigments such as titanium oxide, zinc oxide, zinc sulfide, antimony oxide, and zirconium oxide, white hollow resin particles, and polymer particles. A white organic pigment may be included. The color index (CI) of the white pigment is not particularly limited. I. Pigment White 1 (basic lead carbonate), 4 (zinc oxide), 5 (mixture of zinc sulfide and barium sulfate), 6 (titanium oxide), 6: 1 (titanium oxide containing other metal oxides), 7 (sulfurized) Zinc), 18 (calcium carbonate), 19 (clay), 20 (titanium mica), 21 (barium sulfate), 22 (natural barium sulfate), 23 (gloss white), 24 (alumina white), 25 (gypsum), 26 (magnesium oxide / silicon oxide), 27 (silica), and 28 (anhydrous calcium silicate).

  Among the above-mentioned pigments, when various color pigments and black pigments are contained, for example, a color pattern or a black pattern is printed (printed) (dyed) on a thin fabric such as white. Can do. Further, when the pigment ink contains a white pigment, for example, a white pattern can be printed (printed) (dyed) on an already colored fabric. The ink set of the present embodiment may include a plurality of pigment inks including different pigments. In this way, a more colorful opal processed fabric can be formed.

<Resin emulsion>
The pigment ink used in this embodiment preferably further contains a resin emulsion. As the resin emulsion dries the pigment ink, the resin, the resin and the pigment are fused to each other to fix the pigment to the fabric, so that the rub resistance and fastness of the pattern portion of the fabric is further improved. can do. The resin emulsion may be one in which the resin is dispersed in the dispersion medium as fine particles.

  Examples of the resin emulsion include a urethane resin emulsion and an acrylic resin emulsion. The urethane resin emulsion is a resin emulsion having a urethane bond in the molecule. Furthermore, as urethane resin emulsions, in addition to urethane bonds, polyether-type urethane resins containing ether bonds in the main chain, polyester-type urethane resins containing ester bonds in the main chain, and polycarbonate-type urethanes containing carbonate bonds in the main chain Resins can also be used.

  Commercially available urethane resin emulsions include, for example, Sancure 2710 (trade name, manufactured by The Lubrizol Corporation), Permarin UA-150 (trade name, manufactured by Sanyo Chemical Industries, Ltd.). , Superflex 460, 470, 610, 700 (above, Dai-ichi Kogyo Seiyaku Co., Ltd. trade name), NeoRezR-9660, R-9937, R-940 (above, Enomoto) Kasei Corporation (trade name, manufactured by Kusumoto Chemicals, Ltd.), Adeka Bon titer HUX-380,290K (above, trade name, manufactured by Adeka), Takerak (registered trademark) W-605, W-635, WS- 6021 (above, Mitsui Chemicals, Inc. trade name), polyether (TAISEI FINECHEMICAL CO., LTD) trade name, Tg = 20 C.). A urethane resin emulsion may be used individually by 1 type, and may be used in combination of 2 or more type.

In addition, the pigment ink used in the present embodiment may include a resin emulsion other than the urethane resin emulsion. As resin emulsions other than the urethane resin emulsion, those obtained by known materials and production methods may be used, or commercially available products may be used. Although it does not specifically limit as the said commercial item, For example, Movinyl 966A (Nippon Synthetic Chemical Industry Co., Ltd. brand name, acrylic resin emulsion), microgel E-1002, microgel E- 5002 (trade name, manufactured by Nippon Paint Co., Ltd.), Boncourt 4001, Boncoat 5454 (tradename, manufactured by DIC), SAE1014 (trade name, manufactured by Zeon Corporation), Cybinol SK-200 (trade name, SAIDEN CHEMICAL INDUSTRY
CO., LTD.), John Crill 7100, John Crill 390, John Crill 711, John Crill 511, John Crill 7001, John Crill 632, John Crill 741, John Crill 450, John Crill 840, John Crill 74J, John Krill HRC-1645J, John Krill 734, John Krill 852, John Krill 7600, John Krill 775, John Krill 537J, John Krill 1535, John Krill PDX-7630A, John Krill 352J, John Krill 352D, John Krill PDX-7145, John Krill 538J, Jonkrill 7640, Jonkrill 7641, Jonkrill 631, Jonkrill 790, Jonkrill 780, Jonkrill 7610 (above trade name, manufactured by BASF), NK buy Zehnder R-5HN (Shin-Nakamura Chemical Corporation, trade name, acrylic resin emulsion, solid content 44%) are exemplified. Resin emulsions other than urethane resin emulsions may be used alone or in combination of two or more.

  The lower limit of the resin content of the resin emulsion is preferably 3% by mass or more, more preferably 4% by mass or more, and more preferably 5% by mass or more with respect to the total mass (100% by mass) of the pigment ink. More preferably it is. The upper limit is preferably 15% by mass or less, more preferably 13% by mass or less, and further preferably 10% by mass or less. Within the above range, the fabric pattern tends to have excellent fastness and abrasion resistance, excellent long-term stability of the ink, and in particular, the ink tends to have a low viscosity.

<Other ingredients>
The pigment ink used in this embodiment includes cyclic amide compounds such as 2-pyrrolidone, N-methyl-2-pyrrolidone, and N-ethyl-2-pyrrolidone, water, organic solvents (penetrating agents, moisturizers), and surfactants. Etc. may be included. The water, organic solvent, and surfactant used in the pigment ink are the same as described in the section “1.4.

<Content>
In the pigment ink, the upper limit of the solid content is preferably 5% by mass or more, more preferably 8% by mass or more, and further preferably 10% by mass or more. The lower limit of the solid content is preferably 25% by mass or less, more preferably 20% by mass or less, and further preferably 15% by mass or less. By being in the above-mentioned range, the resulting image tends to be excellent in concealability, rubbing resistance, storage stability and ejection stability. Solid content is a component that is contained in the ink and does not volatilize when the ink is dried, and remains in the recording medium for a long time as a solid at room temperature after the ink is dried. It is a component that excludes water, organic solvents, etc. And resin. The pigment ink preferably contains 0.5 to 15% by mass of pigment, more preferably 1 to 10% by mass, and further preferably 1 to 5% by mass. When the pigment content is in the above range, color development and concealment of images tend to be easily obtained.

1.6. Effects and the like The ink set of the present embodiment includes a discharge ink and a pigment ink, and the discharge ink and the pigment ink are unlikely to interfere chemically. That is, since the pigment ink is dyed on the fiber without a chemical reaction, even if the discharge ink is acidic or alkaline and both coexist in the state of being adjacent or overlapping on the fabric, chemical interaction occurs. Hateful. Therefore, faithful opal processing and coloring can be performed according to the intended design.

  Such an effect will be further described with reference to the drawings. FIG. 1 is a schematic diagram for explaining the effect of the ink set of the present embodiment. FIG. 1A is a schematic diagram illustrating a state before the discharge and coloring of the fabric 100 including the first fiber 10 and the second fiber 20 are performed. In FIG. 1A, the first region 1A is a region where the first fiber 10 is to be discharged by the discharging ink 1, and the second region 2A is the first fiber 10 and the second fiber 20 are formed by the pigment ink 2. It shows the area to be colored. FIG. 1B schematically shows a state in which the discharge ink 1 is applied to the discharge region 1A and the pigment ink 2 is applied to the non-discharge region and the dyeing region 2A. FIG. 1C is a schematic diagram showing a state in which heating and cleaning are performed after applying the discharge ink 1 and the pigment ink 2. In FIG. 1C, a region 1B is a region where the first fibers 1 have been removed by the discharge ink 1 (extraction portion), and a region 2B is that the first fibers 10 and the second fibers 20 are colored by the pigment ink 2. Area (dyeed part and non-exhausted part).

  FIG. 2 is a schematic diagram for explaining opal processing and coloring of a fabric by an ink set including a discharge ink and a reactive dye ink as an example of a conventional ink set. FIG. 2A is a schematic diagram illustrating a state before the discharge and coloring of the fabric 100 including the first fiber 10 and the second fiber 20 are performed. In FIG. 1A, the first region 1A is a region where the first fibers 10 are to be discharged by the discharging ink 1, and the second region 3A is a region where the second fibers are to be dyed by the reactive dye ink 3. Is shown. FIG. 2B schematically shows a state in which the discharge ink 1 is applied to the first region 1A and the pretreatment and the reactive dye ink 3 are applied to the second region 3A. FIG. 2C is a schematic diagram showing a state where steaming and cleaning are performed after the discharge ink 1 and the pretreatment and reactive dye ink 3 are applied. In FIG. 2C, a region 1B is a region where the first fibers 10 have been removed by the discharging ink 1 (extraction portion), and a region 3B is a region where the second fibers 20 have been colored by the reactive dye ink (dyeing). Part and non-excavated part) are schematically shown. As is well known, when dyeing with a reactive dye ink, pretreatment with an alkaline agent is required. That is, alkaline pretreatment ink and reactive dye ink are applied to the second region 3A in this order. The alkaline pretreatment ink and reactive dye ink applied in order are collectively referred to as pretreatment and reactive dye ink 3.

When an acidic discharge ink is used for the fabric 100 in which the first fibers 10 are cellulose fibers and the second fibers 20 are polyester fibers, according to the ink set of the present embodiment, the following An effect is obtained. As shown in FIG. 1A, when a pattern in which the first region 1A and the second region 2A are adjacent to each other is designed, the discharging ink 1 is applied to the first region 1A as shown in FIG. Even if the pigment ink 2 is applied to the second region 2A, the pigment ink is unlikely to interact with the acid, so that chemical interaction is unlikely to occur between the two inks. Therefore, as shown in FIG. 1C, the opal-processed region 1B (extracted portion) and the colored region 2B (dyeed portion and non-extracted portion) are shown in FIG. 1A. Can be formed as designed. In addition, since it is not necessary to perform cleaning or the like between the application of the discharge ink 1 and the application of the pigment ink 2, the ink can be easily and accurately positioned by an inkjet method without considering shrinkage or deformation of the fabric. Can be granted.

  On the other hand, when the first fiber 10 is a cellulosic fiber and the second fiber 20 is a polyester fiber, an acidic discharge ink is used and reacts as a coloring ink. When dyeing cellulosic fibers using a basic dye ink, the following problems occur. As described above, when dyeing with a reactive dye ink, pretreatment with an alkaline agent is required. Therefore, alkaline pretreatment ink is applied to the second region 3A shown in FIG. On the other hand, acidic discharge ink is applied to the first region 1A. As shown in FIG. 2 (a), when designing a pattern in which the first region 1A and the second region 3A are adjacent to each other, the discharging ink 1 is applied to the first region 1A as shown in FIG. 2 (b). When the pretreatment and the reactive dye ink 3 are applied to the second region 3A, chemical interaction (mainly neutralization of acid and alkali) occurs between the two inks. Therefore, when heating and cleaning are performed, as shown in FIG. 2 (c), the end of the second region 3A (see FIG. 2 (a)), that is, the dyeing portion and the non-exhaust portion 3B side of the discharge portion An unstained region X (non-stained and non-extracted region) occurs, and the end of the first region 1A (see FIG. 2 (a)), that is, on the stained part side of the extracted portion 1B, A region Y (non-stained and non-extracted region) that is not removed is generated. For this reason, the fabric cannot be opalized and colored according to the design shown in FIG. Note that the region X that is not dyed and the region Y that is not discharged are collectively referred to as a “white edge” (white edge Z in the drawing) in this specification.

  Here, the problem due to the neutralization between the acidic discharge ink and the reactive dye ink is illustrated, but the alkaline discharge ink (the first fibers are polyester fibers or the like) and the acidic dye ink (second). The same phenomenon also occurs in combination with fibers such as wool and silk. Furthermore, when a chemical interaction occurs not only according to the neutralization reaction but also according to the type of ink to be used, a problem according to the example occurs. It should be noted that if the removal and coloring processes are separated, that is, after the removal process is performed, cleaning and drying are performed once, and then the coloring process is performed. When carrying out the process, it becomes necessary to consider shrinkage and deformation of the fabric due to washing and drying in the previous process, resulting in a decrease in productivity and the like.

  As described above, according to the ink set of the present embodiment, it is possible to color up to the end portion of the non-exhaust and dyed region, and it is possible to prevent unintentional uncolored portions from being trimmed. Therefore, when opal processing and coloring are performed on a fabric (fabric) including at least two kinds of fibers, the restriction on the arrangement (design) of patterns and scars can be relaxed and the degree of freedom in design can be increased.

1.7. Dye ink The ink set of this embodiment may contain dye ink. The dye ink is an ink for inkjet printing. As the dye ink, one of the first fiber and the second fiber is selected that can dye the fibers remaining without being leached by the discharge ink.

  Examples of such dye inks include disperse dyes, sublimation dyes, direct dyes, food dyes, vat dyes, soluble vat dyes, acid dyes, basic dyes, reactive dyes, and other various dyes used in ordinary inkjet printing. Ink containing. The color of the dye ink is not particularly limited.

  For example, when the first fiber contained in the fabric is a cellulosic fiber and the second fiber is a polyester fiber, and the cellulosic fiber is leached with an acid discharge ink, the polyester fiber is dyed. Dye inks containing possible disperse dyes and sublimation dyes may be included in the ink set. When the first fiber contained in the fabric is a polyester fiber and the second fiber is a cellulosic fiber, and the polyester fiber is leached with an alkaline discharge ink, the cellulosic fiber is dyed. Dye inks containing possible reactive dyes may be included in the ink set.

  When the ink set includes a dye ink, in addition to simultaneously discharging the first fibers and dyeing the first fibers and the second fibers with the pigment, the second fibers can be dyed simultaneously. Such a dye ink can be applied not only to the dyeing of the second fibers remaining in the region 1B (extraction portion) but also to the dyeing of the second fibers in the region 2B (dyeing portion and non-extraction portion). The second fibers in the region 2B are dyed with pigment ink. By dyeing this with the dye ink, the fiber surface is not only dyed with the pigment ink, but also the inside of the fiber is dyed with the dye ink. Is done. Therefore, it is possible to further improve the color developability of the second region. Furthermore, when the second fiber is a polyester fiber, a disperse dye ink or a sublimation dye ink can be used as the dye ink. Disperse dye inks and sublimation dye inks are suitable because the discharge inks are acidic or alkaline, and are not likely to cause troubles in discharge or dyeing, and the second fibers can be easily colored (dyed) with good color development.

  As the dye ink, those having known components and compositions can be used, and if necessary, components other than the above-described discharging ink discharging agent can be appropriately contained. The dye content in the dye ink can also be set as appropriate and is not particularly limited. For example, the dye content may be 1% by mass or more and 20% by mass or less with respect to the total mass of the dye ink.

1.8. Other Inks The ink set of this embodiment may include a plurality of inks such as the above-described discharge ink, pigment ink, and dye ink. Moreover, in the ink for coloring, each color ink may be included, respectively. Further, the ink set may include appropriate inks such as a binding ink, an overcoat ink, and a pretreatment ink as necessary.

1.9. Preparation of Ink Each ink (such as the above-described discharge ink, pigment ink, dye ink, etc.) included in the ink set of the present embodiment is mixed with predetermined components, and filtered to remove impurities as necessary. Can be obtained. As a method for mixing the components, a method in which materials are sequentially added to a container equipped with a stirring device such as a mechanical stirrer or a magnetic stirrer and stirred and mixed is suitably used. As a filtration method, centrifugal filtration, filter filtration, or the like can be performed as necessary.

1.10. Ink physical properties Each ink of the ink set of the present embodiment has physical properties that can be used for inkjet. From the viewpoint of inkjet ink, the surface tension at 20 ° C. is preferably 20 mN / m or more and 40 mN / m, and more preferably 23 mN / m or more and 38 mN / m or less. The surface tension is measured by, for example, measuring the surface tension when the platinum plate is wetted with ink in an environment of 20 ° C. using an automatic surface tension meter CBVP-Z (trade name, manufactured by Kyowa Interface Science Co., Ltd.). It can be measured by checking.

From the same viewpoint, the viscosity of each ink at 20 ° C. is preferably 1.5 mPa · s or more and 20 mPa · s or less, and more preferably 2 mPa · s or more and 10 mPa · s or less. The viscosity is measured, for example, by a viscoelasticity tester MCR-300 (trade name,
(Manufactured by Pysica) can be used to measure the viscosity in an environment of 20 ° C.

2. Method for Producing Opal-Processed Fabric A method for producing an opal-processed fabric according to this embodiment includes a first fiber (leached fiber) that is leached with an extractant, and a second fiber (non-leached fiber) that is not leached with the extractant. It is applied to a fabric containing The method for producing an opal processed fabric according to the present embodiment includes a step of preparing a fabric, a step of applying a discharge ink to the first region of the fabric, a step of applying a pigment ink to the second region of the fabric, and the fabric Heating the fabric and washing the fabric. The opal processed fabric manufactured by such a manufacturing method has a first region formed by performing opal processing and a second region dyed with pigment ink on a part of the fabric. Hereinafter, each process is demonstrated about the manufacturing method of the opal processed fabric which concerns on this embodiment. In the present embodiment, the pigment ink is applied to the second region, but the pigment ink may be applied to both the first region and the second region. The pigment ink can dye both the first fiber and the second fiber. Therefore, if the pigment ink is applied to both the first region and the second region, an opal processed fabric having the first and second regions dyed by the pigment ink can be obtained.

2.1. Fabric Preparation Step The method for producing an opal processed fabric according to the present embodiment includes a fabric preparation step. The fabric preparation step is a step of preparing the above-described fabric that is not subjected to opal processing and dyeing. Below, the case where it is a fabric containing a cellulose fiber as a 1st fiber and a polyester fiber as a 2nd fiber is described.

2.2. Step of Applying Discharge Ink to First Area of Fabric The manufacturing method of the opal-processed fabric according to this embodiment includes a step of applying the above-described discharge ink to the first region of the fabric. This step is a step of attaching the discharge ink to the first region, which is a partial region of the fabric, by the ink jet method. After passing through this step, through the heating step and the washing step, the first fibers in the first region are leached and opal processed. Therefore, in the first region of the finally obtained opal processed fabric, there are second fibers that are not leached by the discharging agent. The shape or the like of the first region is not limited at all, and is appropriately set according to a predetermined design.

2.3. Step of Applying Pigment Ink to Second Region of Fabric The manufacturing method of the opal-processed fabric according to the present embodiment includes a step of applying the above-described pigment ink to a second region other than the first region of the fabric by an inkjet method. This step is a step of attaching the above-described pigment ink to the second region other than the first region. After passing through this step, the first and second fibers in the second region are dyed and colored through a heating step and a washing step.

  Accordingly, in the second region of the finally obtained opal processed fabric, both the first fiber and the second fiber are dyed and colored. The shape or the like of the second region is not limited at all, and is appropriately set according to a predetermined design. As described above, in this step, pigment ink may be applied to both the first region and the second region. If pigment ink is applied to both the first region and the second region, the first and second fibers in the second region and the second fibers in the first region are dyed and colored.

  The step of applying the discharge ink and the step of applying the pigment ink are, for example, ejected from nozzles of different nozzle rows of the recording head of the ink jet recording apparatus and applied to the fabric almost simultaneously by a single scanning of the carriage. Also good. Further, the step of applying the discharge ink and the step of applying the pigment ink may be performed at an interval in time. Further, the order of the steps is not limited.

  Further, the step of applying the discharge ink and the step of applying the pigment ink are performed before the cleaning step. Therefore, a state is formed in which the discharge ink is present in the first region of the fabric to be processed and the pigment ink is present in at least the second region of the fabric. The first region and the second region do not need to be adjacent to each other. However, even if the first region and the second region are adjacent to each other, according to the manufacturing method of this embodiment, the discharge ink and the pigment are used. Since the ink hardly chemically interferes with the ink, an opal-processed fabric that is colored to the end of the second region and has few uncolored regions can be manufactured. Therefore, according to the manufacturing method of the present embodiment, unintentional edging is unlikely to occur, and thus the degree of freedom in opal processing and coloring design can be increased for a fabric (fabric) including at least two types of fibers. .

2.4. Step of Heating Fabric The manufacturing method of the opal processed fabric according to the present embodiment includes a step of heating the fabric (heating step). The heating step is a step of performing a heat treatment on the discharge ink and the pigment ink attached to the fabric. Thereby, destruction of the 1st fiber which exists in the 1st field advances, and ashing of a fiber arises, and the 2nd field (when pigment ink is given also to the 1st field, the 1st and 2nd field) In this case, fixing of the pigment ink occurs.

  The step of heating the fabric can be performed using, for example, a means for bringing a heat source into contact with the fabric to directly apply heat to the fabric, a means for blowing warm air, a means for combining them, and the like. Specifically, ironing, heating by heat press, forced air heating, radiation heating, conductive heating, high frequency drying, microwave heating and the like are preferably used.

  The temperature and time of the heating step are appropriately set within the viewpoint that both the progress of ashing of the first fiber and the reduction of the damage of the fabric can be achieved and the range where the fixing of the pigment ink is achieved. Further, the temperature and time of the heating step can be appropriately adjusted depending on the type of fiber contained in the fabric, the type of the extractant, the added amount of the extractant, the type of the pigment ink, and the like.

  The step of heating the fabric (heating step) is preferably a wet heat treatment step including a treatment of exposing the fabric to water vapor. The wet heat treatment step is particularly effective when performing a discharge process and when performing dyeing with a disperse dye, a reactive dye, or an acid dye. A conventionally well-known method can be used for a wet heat treatment process, for example, it can carry out by HT method (high temperature steaming method), HP method (high pressure steaming method), etc. The temperature and time of the wet heat treatment step are set within a range in which both progress of leaching and reduction of fabric damage can be achieved. The temperature and time of the wet heat treatment step can be appropriately adjusted depending on the type of fiber, the type of dye, the amount added, and the like contained in the fabric.

2.5. Process for Washing Fabric The method for producing an opal-processed fabric according to this embodiment includes a washing process for washing the fabric after the heating process. In the washing step, the ashed first fiber can be removed. Moreover, you may serve as washing | cleaning of the undyed pigment at a washing | cleaning process. The washing step may be performed using water (hereinafter, also referred to as “water washing treatment”), or may be performed using an aqueous solution containing water and a surfactant (hot soap, etc.) (hereinafter, “ Also referred to as “soaping process”), both processes may be used in combination.

  Further, the washing step may include a water jet treatment for the purpose of more effectively removing the leached first fibers. The water jet treatment is for removing fibers that are forcibly leached by water pressure, and can be carried out by a known method.

  In the manufacturing method of the opal processed fabric which concerns on this embodiment, you may have the fabric drying process which dries a fabric after a washing | cleaning process. Since the fabric drying step can be performed by heating using the means exemplified in the heating step described above, description thereof will be omitted.

  Moreover, the manufacturing method of the opal processed fabric which concerns on this embodiment may have a binding ink provision process. The binding ink applying step is a step of applying a binding ink containing a binding binder, and can prevent fraying of the first fibers at the edge of the region where the first fibers remain (non-exhaust portion). A conventionally well-known component can be used as a binding binder. Any method such as a pad method, a coating method, a spray method, or an ink jet method can be used to apply the binding ink.

2.6. Other Steps The method for manufacturing an opal processed fabric according to the present embodiment may include a step of applying dye ink to at least the first region of the fabric. This step is a step of adhering the above-described dye ink (dye ink having little chemical interaction with the discharge ink) to at least the first region of the fabric by the ink jet method. After passing through this step, the second fiber is dyed and colored through a heating step (providing steam if necessary) and a washing step. When the step of applying the dye ink is included, the second fibers that are not leached with the discharging agent are present in a dyed state in at least the first region of the finally obtained opal processed fabric.

  The step of applying the dye ink is similar to the step of applying the discharge ink and the step of applying the pigment ink, for example, by discharging the dye ink from nozzles of different nozzle rows of the recording head of the ink jet recording apparatus, This scanning may be applied to the fabric almost simultaneously with other inks. Further, the step of applying the dye ink may be performed at intervals in the same manner as the step of applying the discharge ink and the step of applying the pigment ink. Further, the order of the steps is not limited.

  Moreover, when performing the process of providing dye ink, this process is performed before a washing | cleaning process. Therefore, a state is formed in which all of the discharge ink, the pigment ink, and the dye ink exist on the fabric to be processed. When the production method of this embodiment includes a step of applying a dye ink, at least the second fibers in the first region are dyed with the dye ink, and an opal-processed fabric having a good color developability in the first region is produced. Can do. Further, the dye ink can be applied not only to the first region but also to the second region. In this case, the second fibers in the second region can also be dyed with the dye ink. If both the pigment ink and the dye ink are applied to the second fibers in the second region, not only the fiber surface is dyed by the pigment ink but also the inside of the fiber is dyed by the dye ink. An opal-processed fabric with higher color developability in two regions can be produced.

2.7. According to the method for manufacturing the opal-processed fabric of this embodiment, the discharge ink and the pigment ink are unlikely to chemically interfere with each other, so even if the first region and the second region are adjacent to each other, It is possible to produce an opal-processed fabric that is colored to the end of two regions and has few uncolored regions. Moreover, according to the manufacturing method, since unintentional edging is unlikely to occur, it is possible to increase the degree of freedom of opal processing and coloring design for a fabric (fabric) including at least two types of fibers.

3. EXAMPLES Hereinafter, the present invention will be specifically described based on examples, but the present invention is not limited to these examples.

3.1. Preparation of Ink The discharging ink, pigment ink, disperse dye ink, sublimation dye ink, reactive dye ink, and pretreatment ink (alkali agent) used in Examples and Comparative Examples were prepared as follows.

Each component is put into a container so as to have the composition shown in Table 1, mixed and stirred with a magnetic stirrer for 2 hours, and then filtered through a membrane filter having a pore size of 5 μm to obtain a discharge ink, pigment ink, and dye ink. It was. In addition, the numerical value in Table 5 shows the mass%, and ion-exchange water was added so that the mass of each ink might be 100 mass%, respectively.

In Table 1, the components described by the compound names are obtained as reagents, and the trade names are as follows. SB latex 0568 (manufactured by JSR Corporation, styrene / butadiene-based fixing agent), Orphine E1010 (manufactured by Nissin Chemical Industry Co., Ltd., acetylene glycol-based surfactant) -ON), pigment (Pigment Blue 15: 3), disperse dye (CI Disperse Blue 60), sublimation dye (Disperse Blue 359), reactive dye (CI Reactive Blue 15: 1).

3.2. Evaluation Test The following evaluation test was performed using an ink jet printer adjusted as follows. First, each ink shown in Table 1 was filled in an ink chamber of a dedicated cartridge of an inkjet printer PM-G800 (trade name, manufactured by Seiko Epson Corporation). Then, the cartridge was mounted on the printer, and each ink was supplied to the nozzle. The fabric used for the evaluation is the trade name “Opal Satin No. 9017” (manufactured by Chori Co., Ltd., material: 45% polyester, 55% rayon). And using said printer, as shown in Table 2, the opal processed fabric of Examples 1-5 and Comparative Examples 1-4 was produced. In each example and each comparative example, the first region 1A and the second regions 2A and 3A were arranged adjacent to each other in the manner shown in FIGS. 1 (a) and 2 (a).

  The opal processed fabric of Example 1 was produced as follows. First, the pigment ink discharged from the nozzle of the printer was attached to the second region. Next, the discharge ink discharged from the nozzles of the printer was attached to the first region. Then, after heat-pressing at 170 ° C. for 10 minutes (heating step), the substrate is washed with an aqueous solution containing a surfactant (Laccol STA) at 85 ° C. for 10 minutes (washing step), and at 60 ° C. for 30 minutes. Dried. In this way, an opal-processed fabric that was subjected to opal processing in the first region and coloring (dyeing) in the second region was obtained.

  The opal processed fabric of Example 2 was produced as follows. First, the discharge ink discharged from the nozzles of the printer was attached to the first region. Next, the pigment ink discharged from the nozzle of the printer was attached to the first region and the second region. Then, after heat-pressing at 170 ° C. for 10 minutes (heating step), the substrate is washed with an aqueous solution containing a surfactant (Laccol STA) at 85 ° C. for 10 minutes (washing step), and at 60 ° C. for 30 minutes. Dried. In this way, an opal processed fabric was obtained in which the opal processing of the first region and the coloring (dyeing) of the second region and the first region were performed.

  The opal processed fabric of Example 3 was produced as follows. First, the pigment ink discharged from the nozzle of the printer was attached to the second region. Next, the discharge ink discharged from the nozzles of the printer was attached to the first region. Next, the disperse dye ink discharged from the nozzle of the printer was adhered to the first region. Then, after steaming at 170 ° C. for 10 minutes (adding steam to the heating step), an aqueous solution containing a reducing agent (hydrosulfite sodium), an alkali agent (sodium hydroxide), and a surfactant (Laccol STA) Was washed for 10 minutes at 85 ° C. (reduction washing step) and dried at 60 ° C. for 30 minutes (drying step). In this way, an opal processed fabric was obtained in which the opal processing of the first region, the coloring (dyeing) of the second region, and the coloring (dyeing) of the first region were performed.

  The opal processed fabric of Example 4 was produced as follows. First, the pigment ink discharged from the nozzle of the printer was attached to the second region. Next, the discharge ink discharged from the nozzles of the printer was attached to the first region. Next, the sublimation dye ink discharged from the nozzles of the printer was attached to the first region. Then, after heat-pressing at 170 ° C. for 10 minutes (heating step), 85 using an aqueous solution containing a reducing agent (hydrosulfite sodium), an alkali agent (sodium hydroxide), and a surfactant (Luckol STA). Washing was carried out at 10 ° C. for 10 minutes (reduction washing step) and drying was carried out at 60 ° C. for 30 minutes. In this way, an opal processed fabric was obtained in which the opal processing of the first region, the coloring (dyeing) of the second region, and the coloring (dyeing) of the first region were performed.

  The opal processed fabric of Example 5 was prepared as follows. First, the discharge ink discharged from the nozzles of the printer was attached to the first region. Next, the pigment ink discharged from the nozzle of the printer was attached to the second region. Next, the pigment ink ejected from the nozzle of the printer was adhered to the first region. Then, after heat-pressing at 170 ° C. for 10 minutes (heating step), the substrate is washed with an aqueous solution containing a surfactant (Laccol STA) at 85 ° C. for 10 minutes (washing step), and at 60 ° C. for 30 minutes. Dried. In this way, an opal processed fabric was obtained in which the opal processing of the first region and the coloring (dyeing) of the second region and the first region were performed.

The opal processed fabric of Comparative Example 1 was produced as follows. First, pretreatment ink ejected from the nozzles of the printer was attached to the second region. Next, the reactive dye ink discharged from the nozzle of the printer was attached to the second region. Next, the discharge ink discharged from the nozzles of the printer was attached to the first region. Then, after performing steaming at 170 ° C. for 10 minutes (adding steam to the heating step), washing is performed at 85 ° C. for 10 minutes using an aqueous solution containing a surfactant (Laccol STA) (reduction washing step), It was dried at 60 ° C. for 30 minutes (drying process). In this way, an opal processed fabric intended for opal processing of the first region and coloring (dyeing) of the second region was obtained.

  The opal processed fabric of Comparative Example 2 was produced as follows. First, pretreatment ink ejected from the nozzles of the printer was attached to the second region. Next, the reactive dye ink discharged from the nozzle of the printer was attached to the second region. Next, the discharge ink discharged from the nozzles of the printer was attached to the first region. Next, the disperse dye ink discharged from the nozzle of the printer was adhered to the second region. Then, after performing steaming at 170 ° C. for 10 minutes (adding steam to the heating step), washing is performed at 85 ° C. for 10 minutes using an aqueous solution containing a surfactant (Laccol STA) (reduction washing step), It was dried at 60 ° C. for 30 minutes (drying process). In this way, an opal processed fabric intended for opal processing of the first region and coloring (dyeing) of the second region was obtained.

  The opal processed fabric of Comparative Example 3 was produced as follows. First, pretreatment ink ejected from the nozzles of the printer was attached to the second region. Next, the reactive dye ink discharged from the nozzle of the printer was attached to the second region. Next, the discharge ink discharged from the nozzles of the printer was attached to the first region. Next, the disperse dye ink discharged from the nozzle of the printer was adhered to the first region. Then, after performing steaming at 170 ° C. for 10 minutes (adding steam to the heating step), washing is performed at 85 ° C. for 10 minutes using an aqueous solution containing a surfactant (Laccol STA) (reduction washing step), It was dried at 60 ° C. for 30 minutes (drying process). In this way, an opal-treated fabric intended for opal processing and coloring (dyeing) in the first region and coloring (dying) in the second region was obtained.

  The opal processed fabric of Comparative Example 4 was produced as follows. First, pretreatment ink ejected from the nozzles of the printer was attached to the second region. Next, the reactive dye ink discharged from the nozzle of the printer was attached to the second region. Next, the discharge ink discharged from the nozzles of the printer was attached to the first region. Next, the disperse dye ink discharged from the nozzles of the printer was attached to the first region and the second region. Then, after performing steaming at 170 ° C. for 10 minutes (adding steam to the heating step), washing is performed at 85 ° C. for 10 minutes using an aqueous solution containing a surfactant (Laccol STA) (reduction washing step), It was dried at 60 ° C. for 30 minutes (drying process). In this way, an opal-treated fabric intended for opal processing and coloring (dyeing) in the first region and coloring (dying) in the second region was obtained.

  The opal-processed fabrics of the respective examples thus obtained were visually observed, the presence or absence of a white edge at the boundary between the first region and the second region, the color developability of the second region, the surface of the second region The presence or absence of a color difference (color shift) between the back surface and the back surface was determined and listed in Table 2.

3.3. Evaluation results None of the opal-treated fabrics of the Examples produced white edges. This is presumably because the pigment ink applied to the second region does not chemically interact with the discharge ink applied to the first region. In other words, the pigment ink used in the opal processed fabric of the example does not decrease the leaching ability of the discharge ink and does not decrease the dye ink dyeing ability even when it comes into contact with the discharge ink. Conceivable.

On the other hand, all the opal processed fabrics of the comparative examples using the reactive dye ink (pretreatment ink) had white edges. This is presumably because the pretreatment ink for the reactive dye ink applied to the second region chemically interacted with the discharge ink applied to the first region. That is, it is considered that the pretreatment ink used in the opal processed fabric of the example contains an alkaline agent, and thus a neutralization reaction occurs due to contact with the discharge ink. Therefore, it is considered that the leaching ability of the discharge ink is lowered and the dyeing ability of the reactive dye ink is also lowered.

  In the opal processed fabric of Example 3, since the polyester fiber in the first region was dyed with disperse dye ink, the steam treatment was performed. However, in the other examples, all the steam was not required. Two areas could be colored well. On the other hand, all of the opal processed fabrics of the comparative examples require steam treatment.

  In Examples 1, 2, 4, and 5, the steam process was not performed, but it is considered that the steam process may be performed. If the steam treatment is performed, it is considered that the heating process can be performed at a lower temperature or in a shorter time.

  Moreover, in Examples 1-5, the difference in color was not recognized by the surface and the back surface of the fabric. On the other hand, in Comparative Examples 2 and 4, a color difference was recognized between the front surface and the back surface of the fabric. In Examples 1 to 5, the cellulose fibers and polyester fibers in the second region are colored (dyed) with the same pigment ink, whereas in Comparative Examples 2 and 4, the cellulose fibers in the second region. Are dyed with reactive dye ink, and polyester fibers are dyed with disperse dye ink. Even if dye inks of almost the same color are used for the fibers in the same location, the structure of the dye differs greatly between the reactive dye ink and the disperse dye ink, resulting in a color difference between the front and back surfaces of the fabric. It is thought. In Comparative Examples 1 and 3, the cellulose fibers in the second region are only dyed with reactive dye ink. Therefore, unlike in Comparative Examples 2 and 4, no color misregistration between the front and back sides of the fabric in the second region occurred. However, in Comparative Examples 1 and 3, since the polyester fiber in the second region was not dyed, the coloring of the second region was insufficient, and as a result, the coloring property of the second region was insufficient.

  The opal-treated fabric of Example 5 has no white edge, good color development in the second region, and no color misregistration between the front and back surfaces, and excellent evaluation results as in Example 2. became. In addition, the sharpness (visual comparison) of the boundary between the first region and the second region was better than that of the other example 2. In Example 2, the discharge ink was attached to the first region and the pigment ink was attached to the first and second regions, whereas in Example 5, the discharge ink was applied to the first region. This may be due to the order of adhesion to the region, pigment ink to the second region, and pigment ink to the first region.

  That is, in Example 2, the discharge ink and the pigment ink are continuously applied to the first region, whereas in Example 5, the step of applying the discharge ink to the first region; A step of applying the pigment ink to the second region is provided between the step of applying the pigment ink to the first region. In other words, in Example 5, the pigment ink is applied to the first region after a while after the discharge ink is applied to the first region. In Example 2, there is a possibility that ink bleeding has occurred due to the application of the pigment ink before the discharge ink has sufficiently penetrated into the first region. On the other hand, in Example 5, the discharge ink sufficiently penetrates into the first region, and after the pigment ink is applied after drying to some extent, bleeding is reduced, and the boundary between the first region and the second region is sharper. It is thought that it was an impression.

  The present invention is not limited to the embodiments described above, and various modifications are possible. For example, the present invention includes substantially the same configuration (for example, a configuration having the same function, method and result, or a configuration having the same purpose and effect) as the configuration described in the embodiment. In addition, the invention includes a configuration in which a non-essential part of the configuration described in the embodiment is replaced. In addition, the present invention includes a configuration that exhibits the same operational effects as the configuration described in the embodiment or a configuration that can achieve the same object. In addition, the invention includes a configuration in which a known technique is added to the configuration described in the embodiment.

DESCRIPTION OF SYMBOLS 100 ... Fabric, 1 ... Discharge ink, 2 ... Pigment ink, 3 ... Reactive dye ink, 10 ... 1st fiber (leaching fiber), 20 ... 2nd fiber (non-leaching fiber), 1A ... 1st area | region, 2A , 3A ... second region, 1B ... extracted portion, 2B, 3B ... dyeed and non-extracted portion, X ... non-dyed region, Y ... non-extracted region, Z ... white edge

Claims (10)

An ink set for performing opal processing and coloring by an ink jet method on a fabric including first fibers and second fibers,
A discharge ink containing a discharge agent capable of leaching the first fibers and not leaching the second fibers;
A pigment ink containing a pigment capable of dyeing the first fiber and the second fiber;
Ink set with. In claim 1,
The ink set, wherein the first fibers are cellulosic fibers. In claim 2,
The ink set is an ink set that is at least one of sodium hydrogen sulfate, aluminum sulfate, and ammonium sulfate. In any one of Claims 1 to 3,
An ink set further comprising a dye ink containing a dye for dyeing the second fiber. In claim 4,
The ink set, wherein the second fiber is a polyester fiber, and the dye is a disperse dye or a sublimation dye. Preparing a fabric including a first fiber that is leached by an extractant and a second fiber that is not leached by the extractant;
Applying a discharge ink containing the discharge agent to the first region of the fabric by an inkjet method;
Applying a pigment ink containing a pigment to at least a second region other than the first region of the fabric by an inkjet method;
Heating the fabric;
Washing the fabric;
A method for producing an opal-processed fabric having: In claim 6,
The method for producing an opal-processed fabric, wherein the first fiber is a cellulosic fiber. In claim 7,
The said extractant is a manufacturing method of the opal processed fabric which is at least 1 sort (s) of sodium hydrogen sulfate, aluminum sulfate, and ammonium sulfate. In any one of Claims 6 thru | or 8,
A method for producing an opal-processed fabric, further comprising a step of applying a dye ink containing a dye to at least the first region by an inkjet method. In claim 9,
The method for producing an opal-processed fabric, wherein the second fiber is a polyester fiber, and the dye is a disperse dye or a sublimation dye.