Inkjet treatment liquid, inkjet textile printing device, and inkjet textile printing method

Abstract

SOLUTION: An inkjet treatment liquid contains emulsified particles containing a silicone oil, and an aqueous medium, wherein the silicone oil content is 7 mass% to 15 mass%.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an inkjet treatment liquid, an inkjet textile printing apparatus, and an inkjet textile printing method. [Background technology]

[0002] In the inkjet printing method, for example, an ink containing a pigment is used. In order to improve the rub fastness of the printing object (hereinafter, sometimes referred to as a printed item) on which an image is formed, the ink containing the pigment may be used together with a post-treatment liquid.

[0003] Meanwhile, a transport roller for an inkjet recording device has been known (see, for example, Patent Document 1). In the transport roller described in Patent Document 1, a treatment liquid containing one or both of fullerene and fullerene derivative is applied to the surface of the transport roller. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-75524 Summary of the Invention

[0005] A treatment liquid for inkjet printing according to a first aspect of the present disclosure includes emulsified particles containing silicone oil and an aqueous medium, The content of the silicone oil is 7% by mass or more and 15% by mass or less. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 1 is a side view showing an example of an inkjet textile printing apparatus according to a second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0007] In recent years, there has been a demand for further improvement in the rub fastness of printed textiles in inkjet printing technology. It is expected that the rub fastness of printed textiles will vary depending on the type of silicone oil contained in the treatment liquid, the average particle size of the silicone oil-containing emulsion particles, the amount of treatment liquid ejected, and other factors. For example, it is expected that a small amount of treatment liquid ejected may affect the rub fastness of printed textiles. Furthermore, it is expected that an excessively small average particle size of the silicone oil-containing emulsion particles in the treatment liquid may affect the rub fastness of printed textiles. Therefore, it would be advantageous to know the conditions for the characteristics of an inkjet treatment liquid that can produce printed textiles with excellent rub fastness, from a perspective other than the type of silicone oil and the average particle size of the emulsion particles. Therefore, an embodiment of the present disclosure provides an inkjet treatment liquid that can produce printed textiles with excellent rub fastness, from the perspective of adjusting the concentration of the silicone oil contained in the treatment liquid.

[0008] Furthermore, it would be even more preferable if the inkjet treatment liquid also suppresses deterioration in the feel of the printed textile and has excellent ejection properties from the treatment head of the inkjet textile printing device.

[0009] The inkjet treatment liquid of the present disclosure can suppress deterioration in the feel of printed textiles, can produce printed textiles with excellent rub fastness, and has excellent ejection properties from the treatment head of an inkjet textile printing device.

[0010] Hereinafter, embodiments of the present disclosure will be described. In this specification, the volume median diameter (D 50 Unless otherwise specified, the measured value of volume median diameter is the median diameter measured using a laser diffraction / scattering particle size distribution analyzer (LA-950 manufactured by Horiba Ltd.). Hereinafter, the volume median diameter will be referred to as "D 50" Unless otherwise specified, the "main component" of a material refers to the component that is contained in the largest amount in the material by mass. Unless otherwise specified, the "specific gravity" refers to the specific gravity at 25°C. Acrylic and methacrylic may be collectively referred to as "(meth)acrylic." Each component described in this specification may be used alone or in combination of two or more.

[0011] [First embodiment: inkjet treatment liquid] The inkjet treatment liquid (hereinafter also referred to as treatment liquid) according to the first embodiment of the present disclosure will be described below. The treatment liquid according to the first embodiment contains emulsified particles and an aqueous medium. The emulsified particles are dispersed in the aqueous medium of the treatment liquid. In other words, the treatment liquid according to the first embodiment is an emulsion, and more specifically, an oil-in-water (O / W) emulsion.

[0012] The treatment liquid according to the first embodiment is suitable for use in, for example, an inkjet textile printing apparatus and an inkjet textile printing method, which will be described later. The treatment liquid according to the first embodiment is, for example, a treatment liquid for post-treatment. More specifically, after an image is formed in an image formation area of ​​a textile printing target using ink, the image formation area is post-treated using the treatment liquid according to the first embodiment.

[0013] <Emulsified particles> The emulsified particles contained in the treatment liquid contain a silicone oil. The silicone oil preferably contains at least an ionic group-containing silicone oil. By containing an ionic group-containing silicone oil, it is possible to produce a printed material that is particularly excellent in wet rub fastness. The silicone oil may be a silicone oil other than an ionic group-containing silicone oil (hereinafter, sometimes referred to as "other silicone oil"). Alternatively, the silicone oil may contain both an ionic group-containing silicone oil and the other silicone oil. In this case, one emulsified particle may contain both an ionic group-containing silicone oil and the other silicone oil. Alternatively, the treatment liquid may contain two or more types of emulsified particles; for example, the first emulsified particles may contain an ionic group-containing silicone oil, and the second emulsified particles may contain the other silicone oil. When the emulsified particles contain at least a silicone oil, particularly an ionic group-containing silicone oil, the following first to fourth advantages are obtained.

[0014] The first advantage will be explained. Silicone oil has a friction-reducing effect. By post-treating the object to be printed using a processing liquid, the image formed on the object to be printed is coated with silicone oil, reducing the coefficient of friction on the surface of the object to be printed. As a result, even when the image formed on the object to be printed is rubbed, color fading is unlikely to occur, and printed items with excellent dry and wet rub fastness can be produced. Furthermore, coating with silicone oil, which has a friction-reducing effect, reduces friction between the threads of the object to be printed. As a result, stiffness of the object to be printed caused by image formation is reduced, and deterioration in the tactile feel of the printed item is suppressed.

[0015] The second advantage will now be explained. Silicone oil has water-repellent properties. By post-treating the object to be printed using the treatment liquid, the object is coated with the water-repellent silicone oil, imparting water-repellent properties to the surface of the object to be printed. As a result, even if the image formed on the object to be printed is rubbed in a wet state, color fading is unlikely to occur, and a printed product with excellent wet rub fastness can be produced.

[0016] The third advantage will now be explained. In particular, when the composition contains at least an ionic group-containing silicone oil, it is presumed that the ionic group in the ionic group-containing silicone oil forms ionic bonds between the ionic group and the object to be printed, and between the ionic group and the ink ejected onto the object to be printed. The formation of ionic bonds makes it difficult for the ionic group-containing silicone oil to be washed away from the object to be printed and the ink by water. As a result, it is possible to produce printed products with superior wet rub fastness.

[0017] The fourth advantage will now be described. In particular, when the treatment liquid contains at least an ionic group-containing silicone oil, the ionic group in the ionic group-containing silicone oil allows emulsified particles containing the ionic group-containing silicone oil to be suitably dispersed in the aqueous medium of the treatment liquid. Such a treatment liquid can be more suitably ejected from the treatment head of an inkjet printing device. When the treatment liquid is ejected from the treatment head, the amount of treatment liquid used is reduced compared to when the printed material is immersed in the treatment liquid. This makes it less likely that stiffness will be caused to the printed material, and the deterioration in the feel of the printed material is further suppressed. Furthermore, when the treatment liquid is ejected from the treatment head, a silicone oil with a higher viscosity can be used compared to when ink containing silicone oil as a base oil is ejected from the recording head. This allows for the production of printed materials with superior rub fastness. The first to fourth advantages have been described above.

[0018] Here, it is assumed that the rub fastness of the printed textile varies depending on the concentration of silicone oil contained in the treatment liquid. For example, if the concentration of silicone oil is too low, it may affect the rub fastness of the printed textile. Therefore, there is a demand for an inkjet treatment liquid that can produce printed textiles with excellent rub fastness.

[0019] In the first embodiment, the silicone oil content in the treatment liquid is 7% by mass or more and 15% by mass or less. By having the silicone oil content within the range of 7% by mass or more and 15% by mass or less, the inkjet treatment liquid according to the first embodiment suppresses deterioration in the feel of the printed textile, enables the production of printed textiles with excellent rub fastness, and exhibits excellent ejection properties from the treatment head of the inkjet printing device. In particular, if the silicone oil content is within this concentration range, it is possible to produce printed textiles with excellent rub fastness.

[0020] Specifically, when the silicone oil content is less than 7% by mass, both the dry rub fastness and wet rub fastness of the printed textile decrease. Furthermore, when the silicone oil content is less than 7% by mass, the tactile feel of the printed textile also decreases. On the other hand, when the silicone oil content exceeds 15% by mass, the amount of solid matter in the treatment liquid increases, resulting in poor discharge from the treatment head. As a result, the treatment liquid is not discharged properly, leading to a decrease in both the dry rub fastness and wet rub fastness of the printed textile. Furthermore, when the silicone oil contains at least an ionic group-containing silicone oil, when the silicone oil content exceeds 15% by mass, the amount of ionic groups in the ionic group-containing silicone oil contained in the silicone oil increases. Therefore, it is difficult to impart water repellency to the surface of the textile to be printed, and both the dry rub fastness and wet rub fastness of the printed textile decrease.

[0021] The content of silicone oil in the treatment liquid is preferably 8% by mass or more, more preferably 9% by mass or more, and even more preferably 10% by mass or more. The content of silicone oil in the treatment liquid is preferably 14% by mass or less, more preferably 13% by mass or less. In particular, by setting the content of silicone oil in the treatment liquid within the range of 10% by mass or more and 13% by mass or less, it is possible to produce printed products that are superior in both dry rub fastness and wet rub fastness.

[0022] The content of silicone oil in treatment liquid means the percentage of the mass of silicone oil with respect to the mass of treatment liquid.When emulsified particle contains two or more kinds of silicone oil (for example, the silicone oil containing ionic group and other silicone oil), the content of silicone oil means the percentage of the total mass of two or more kinds of silicone oil with respect to the mass of treatment liquid.

[0023] The viscosity of silicone oil is 500mm 2 / s (i.e. mm 2 / sec) or more. 2 / s or more, the silicone oil is less likely to be detached from the printed material due to friction, and a printed material with excellent dry rub fastness and wet rub fastness can be produced. Also, as already mentioned, the treatment liquid according to the first embodiment has excellent ejection properties from the treatment head of the inkjet printing device. When the treatment liquid is ejected from the treatment head, the amount of treatment liquid used is reduced compared to when the printed material is immersed in the treatment liquid. For this reason, 2 Even when a silicone oil with a high viscosity of 1 / s or more is used in the treatment liquid, stiffness is unlikely to be caused on the object to be printed, and deterioration in the feel of the printed product is further suppressed.

[0024] The upper limit of the viscosity of the silicone oil is not particularly limited. For example, the viscosity of the silicone oil is 100,000 mm 2 / s or less is preferable, and 6000 mm 2 The viscosity of the silicone oil is preferably 500 mm / s or less. 2 / s, 700mm 2 / s, 900mm 2 / s, 1000mm 2 / s, 1100mm 2 / s, 1200mm 2 / s, 1500mm 2 / s, 1700mm 2 / s, 1800mm 2 / s, 2000mm 2 / s, 3000mm 2 / s, 5700mm2 / s, and 6000mm 2 / s.

[0025] The viscosity of the silicone oil refers to the kinematic viscosity at 25° C. When the emulsified particles contain two or more types of silicone oils (for example, an ionic group-containing silicone oil and another silicone oil), the viscosity of the silicone oil refers to the viscosity of a mixture of two or more types of silicone oils.

[0026] The viscosity of the silicone oil is measured in accordance with the method described in JIS (Japanese Industrial Standards) Z8803:2011 (Method for measuring viscosity of liquids). For example, the silicone oil can be extracted from the treatment liquid with toluene, washed, and dried to separate the silicone oil from the treatment liquid, and the viscosity of the silicone oil can then be measured.

[0027] The average particle size of the emulsified particles (the particle size dispersed in an aqueous medium) is preferably 100 nm or more and 250 nm or less, more preferably 120 nm or more and 220 nm or less, and even more preferably 150 nm or more and 200 nm or less. When the average particle size of the emulsified particles is within this range, the treatment liquid containing the emulsified particles can be more suitably ejected from the treatment head of the inkjet textile printing device. The average particle size of the emulsified particles may be within the range of two values ​​selected from the group consisting of 100 nm, 120 nm, 135 nm, 150 nm, 155 nm, 160 nm, 180 nm, 200 nm, 210 nm, 220 nm, and 250 nm, for example.

[0028] The average particle size of emulsion particles refers to the harmonic average particle size (also called the cumulant average particle size) calculated based on scattered light intensity using the cumulant method. The average particle size of emulsion particles is measured in accordance with the method specified in ISO 13321:1996 (Particle size analysis - Photon correlation spectroscopy).

[0029] The emulsion particles may further contain components other than silicone oil, but if the emulsion particles contain only silicone oil, it is possible to more reliably produce a printed item with excellent rub fastness and more reliably prevent deterioration in the feel of the printed item.

[0030] As already mentioned, the silicone oil contained in the emulsified particles may be either one of ionic group-containing silicone oil and other silicone oil. Or, the silicone oil may contain both ionic group-containing silicone oil and other silicone oil. In this case, one emulsified particle may contain both ionic group-containing silicone oil and other silicone oil. Or, the first emulsified particle may contain ionic group-containing silicone oil, and the second emulsified particle may contain other silicone oil. Hereinafter, the ionic group-containing silicone oil and other silicone oil will be described.

[0031] (Ionic group-containing silicone oil) The ionic group-containing silicone oil is a modified silicone oil, more specifically, an ionic group-modified silicone oil. Examples of the ionic group-modified silicone oil include a modified silicone oil having an ionic group introduced into a side chain and a modified silicone oil having an ionic group introduced into a terminal group.

[0032] The modified silicone oil having an ionic group introduced into the side chain has a first terminal group represented by the following formula (1a), a repeating unit represented by the following formula (1b), a repeating unit represented by the following formula (1c), and a second terminal group represented by the following formula (1d).

[0033] [ka]

[0034] The * in formula (1a) represents a bond bonded to a silicon atom in the repeating unit represented by formula (1b) or (1c). The * in formula (1d) represents a bond bonded to an oxygen atom in the repeating unit represented by formula (1b) or (1c). R in formula (1c) 1 represents a group containing an ionic group. The ionic group of the group containing an ionic group is preferably an amino group, a carboxy group, a phenolic hydroxy group, or a silanol group.

[0035] The modified silicone oil having an ionic group introduced into the terminal group has a first terminal group represented by the following formula (2a), a repeating unit represented by the following formula (2b), and a second terminal group represented by the following formula (2c).

[0036] [ka]

[0037] The * in formula (2a) represents a bond bonded to a silicon atom in the repeating unit represented by formula (2b). The * in formula (2c) represents a bond bonded to an oxygen atom in the repeating unit represented by formula (2b). R in formula (2a) 2 , and R in formula (2c) 3 each independently represents a group containing an ionic group. The ionic group of the group containing an ionic group is preferably an amino group, a carboxy group, a phenolic hydroxy group, or a silanol group.

[0038] The ionic group-containing silicone oil preferably comprises at least one selected from the group consisting of amino-modified silicone oil, carboxy-modified silicone oil, phenol-modified silicone oil, and silanol-modified silicone oil. Furthermore, it is more preferable that the ionic group-containing silicone oil is at least one selected from the group consisting of these. Furthermore, it is more preferable that the ionic group-containing silicone oil is one of these. The amino-modified silicone oil, carboxy-modified silicone oil, phenol-modified silicone oil, and silanol-modified silicone oil each have an amino group, a carboxy group, a phenolic hydroxy group, and a silanol group as the ionic group. Of these, it is more preferable that the ionic group-containing silicone oil is a carboxy-modified silicone oil.

[0039] When the silicone oil contains at least an ionic group-containing silicone oil, the functional group equivalent of the ionic group-containing silicone oil is preferably 1000 g / mol or more and 5500 g / mol or less in order to more suitably disperse the emulsified particles in an aqueous medium. The functional group equivalent is the molecular weight per 1 mol of functional group (ionic group). The functional group equivalent of the ionic group-containing silicone oil may be within the range of two values ​​selected from the group consisting of, for example, 1000 g / mol, 1200 g / mol, 1474 g / mol, 1490 g / mol, 1500 g / mol, 2000 g / mol, 3800 g / mol, 3900 g / mol, 4000 g / mol, 5000 g / mol, 5200 g / mol, and 5500 g / mol.

[0040] When the silicone oil contains at least an ionic group-containing silicone oil, the content of the ionic group-containing silicone oil relative to the total mass of the silicone oil contained in the emulsified particles is preferably 30% by mass or more and 100% by mass or less, more preferably 40% by mass or more and 100% by mass or less, and particularly preferably 100% by mass.

[0041] (Other silicone oils) The silicone oil contained in the treatment liquid may be only other silicone oil. Alternatively, the viscosity of the silicone oil can be adjusted by further containing other silicone oil in addition to the ionic group-containing silicone oil. Examples of other silicone oils include unmodified silicone oil. More specifically, dimethylpolysiloxane can be used.

[0042] When other silicone oils are contained, the content of the other silicone oils relative to the total mass of the silicone oils contained in the emulsified particles is preferably 50% by mass or more and 100% by mass or less, more preferably 50% by mass or more and 70% by mass or less, and even more preferably 50% by mass or more and 60% by mass or less.

[0043] When the silicone oil contained in the treatment liquid contains both ionic group-containing silicone oil and other silicone oil, the silicone oil is preferably a combination of carboxy-modified silicone oil and dimethylpolysiloxane.In this case, one emulsified particle may contain both carboxy-modified silicone oil and dimethylpolysiloxane.Alternatively, the first emulsified particle may contain carboxy-modified silicone oil, and the second emulsified particle, which is another emulsified particle, may contain dimethylpolysiloxane.

[0044] When the silicone oil contained in the treatment liquid contains both an ionic group-containing silicone oil and other silicone oils, the ratio of the mass of the ionic group-containing silicone oil to the mass of the other silicone oils is preferably 0.5 or more and less than 1.0, and more preferably 0.6 or more and 0.7 or less.

[0045] <Aqueous medium> The aqueous medium contained in the treatment liquid is a medium containing water as a main component. The aqueous medium may function as a solvent or as a dispersion medium. Specific examples of the aqueous medium include water and a mixture of water and a polar solvent. Examples of polar solvents contained in the aqueous medium include methanol, ethanol, isopropyl alcohol, butanol, and methyl ethyl ketone. The water content in the aqueous medium is preferably 90% by mass or more, and particularly preferably 100% by mass. The content of the aqueous medium is preferably 50% by mass or more and 90% by mass or less, and more preferably 55% by mass or more and 70% by mass or less, based on the mass of the treatment liquid.

[0046] <Other ingredients> The treatment liquid may contain components other than the emulsified particles and the aqueous medium (hereinafter sometimes referred to as "other components") as necessary. Examples of other components include acids, bases, polyols, and dispersants.

[0047] (acid) When the silicone oil contains at least an ionic group-containing silicone oil and the ionic group-containing silicone oil has an anionic group, the treatment liquid preferably contains an acid. The acid promotes the ionization of the anionic groups, thereby favorably dispersing emulsified particles containing the ionic group-containing silicone oil in an aqueous medium. Examples of the acid include strong acids and weak acids. Examples of strong acids include hydrochloric acid, paratoluenesulfonic acid, and sulfuric acid. Examples of weak acids include benzoic acid and acetic acid. In order to promote the ionization of the anionic groups contained in the silicone oil, a strong acid is preferred. Specifically, hydrochloric acid, paratoluenesulfonic acid, or sulfuric acid is more preferred. When the treatment liquid contains an acid, the content of the acid, converted into the amount of acid at a concentration of 1 mol / L, is preferably 1% by mass or more and 5% by mass or less relative to the mass of the treatment liquid.

[0048] (base) When the silicone oil contains at least an ionic group-containing silicone oil and the ionic group-containing silicone oil has a cationic group, the treatment liquid preferably contains a base. The base promotes ionization of the cationic group, allowing emulsion particles containing the ionic group-containing silicone oil to be suitably dispersed in an aqueous medium. Examples of the base include sodium hydroxide. When the treatment liquid contains a base, the content of the base, converted into the amount of base at a concentration of 1 mol / L, is preferably 1% by mass or more and 5% by mass or less relative to the mass of the treatment liquid.

[0049] (Polyol) The viscosity of the treatment liquid can be suitably adjusted by including a polyol in the treatment liquid. A diol or triol is preferable as the polyol. Examples of diols include glycol compounds. More specifically, examples include ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, and tetraethylene glycol. Examples of triols include glycerin. When the treatment liquid includes a polyol, the content of the polyol is preferably 10% by mass or more and 40% by mass or less, and more preferably 15% by mass or more and 35% by mass or less, based on the mass of the treatment liquid.

[0050] (dispersant) Examples of dispersants include surfactants, resin dispersants, and polysaccharides. However, it is preferable that the treatment liquid does not contain a dispersant and the emulsified particles are dispersed in the treatment liquid. As already mentioned, emulsified particles containing silicone oil, particularly ionic group-containing silicone oil, are more suitably dispersed in an aqueous medium. Therefore, even if a dispersant is not contained, the dispersed state of the emulsified particles can be suitably maintained. Dispersants often have hydrophilic groups. When a dispersant having a hydrophilic group is not contained in the treatment liquid, the wet rub fastness of the printed material treated with the treatment liquid is further improved.

[0051] <Method of manufacturing the treatment liquid> An example of a method for producing a treatment liquid is described below. Using a homogenizer, silicone oil, an aqueous medium, and optional components (e.g., acid or base, and polyol) are mixed and emulsified. In this way, emulsion particles containing silicone oil are dispersed in the aqueous medium to obtain a treatment liquid.

[0052] To ensure that the emulsification proceeds smoothly, a raw emulsion containing emulsified particles may be prepared in advance, and the raw emulsion, an aqueous medium, and, if necessary, a polyol may be mixed to obtain a treatment liquid. The raw emulsion may contain, for example, silicone oil, a portion of the aqueous medium, and, if necessary, an acid or a base. In preparing the raw emulsion, the emulsification time is, for example, 5 minutes to 1 hour. The emulsification temperature is, for example, 5°C to 40°C. The content of the raw emulsion is, for example, 15% by mass to 50% by mass relative to the mass of the treatment liquid.

[0053] In addition, when using two or more kinds of silicone oils, for example, the silicone oils of both ionic group-containing silicone oil and non-modified silicone oil as raw materials, can be mixed and emulsified with both silicone oils, and make the emulsion particles that contain both ionic group-containing silicone oil and non-modified silicone oil, and obtain treatment liquid.Or, can be mixed with the raw emulsion of ionic group-containing silicone oil and the raw emulsion of non-modified silicone oil, and obtain the treatment liquid that contains the first emulsion particles that contain ionic group-containing silicone oil and the second emulsion particles that contain non-modified silicone oil.

[0054] [Second embodiment: inkjet printing device] Next, an inkjet textile printing apparatus 10 according to a second embodiment of the present disclosure will be described with reference to FIG. 1. For ease of understanding, FIG. 1 mainly shows each component in a schematic manner. The size, number, etc. of each component shown in the figure may be changed as appropriate. FIG. 1 is a side view showing the main parts of the inkjet textile printing apparatus 10, which is an example of an inkjet textile printing apparatus according to the second embodiment. The inkjet textile printing apparatus 10 shown in FIG. 1 is a flatbed type inkjet textile printing apparatus.

[0055] The inkjet printing apparatus 10 according to the second embodiment processes a printing object P using the treatment liquid according to the first embodiment. Because the treatment liquid according to the first embodiment is used, the inkjet printing apparatus 10 can produce a printed item with excellent rub fastness and suppress deterioration in the feel of the printed item, for the same reasons as those described in the first embodiment. Furthermore, because the treatment liquid according to the first embodiment has excellent ejection properties from the treatment head, the inkjet printing apparatus according to the second embodiment can reliably achieve these effects.

[0056] 1 includes a recording head 1, a processing head 2, and a mounting table 3. The recording head 1 has a first recording head 1a, a second recording head 1b, a third recording head 1c, and a fourth recording head 1d.

[0057] The recording head 1 ejects ink onto an image forming area of ​​the printing object P. The first recording head 1a, second recording head 1b, third recording head 1c, and fourth recording head 1d of the recording head 1 each eject ink of a different color (for example, yellow ink, magenta ink, cyan ink, and black ink). There are no particular limitations on the recording head 1, but examples include a piezoelectric head and a thermal inkjet head.

[0058] The treatment head 2 ejects a treatment liquid onto at least the image formation area of ​​the printing object P. The treatment liquid is the treatment liquid according to the first embodiment. There are no particular limitations on the treatment head 2, but examples include a piezo type head and a thermal inkjet type head.

[0059] The printing object P is placed on the mounting table 3. A recording head 1 and a processing head 2 are disposed above the mounting table 3 so that ink and processing liquid can be ejected onto the printing object P. Driven by a motor (not shown), the mounting table 3 moves horizontally in a direction from the recording head 1 toward the processing head 2 (for example, to the left in FIG. 1). As the mounting table 3 moves horizontally, the printing object P on the mounting table 3 is transported.

[0060] The object to be printed P may be a woven fabric or a knitted fabric, and examples of the object to be printed P include cotton fabric, silk fabric, linen fabric, acetate fabric, rayon fabric, nylon fabric, polyurethane fabric, and polyester fabric.

[0061] In producing a printed item, first, the mounting table 3 on which the object to be printed P is placed moves horizontally, and the object to be printed P is transported to a position facing the recording head 1. Ink is ejected from the recording head 1 onto an image formation area of ​​the object to be printed P. In this way, an image is formed with ink in the image formation area of ​​the object to be printed P. After the ink is ejected, the mounting table 3 on which the object to be printed P is placed moves horizontally again, and the object to be printed P is transported to a position facing the processing head 2. A treatment liquid is ejected from the processing head 2 onto at least the image formation area of ​​the object to be printed P. In this way, a treatment film is formed with the treatment liquid on the image formed in the image formation area of ​​the object to be printed P.

[0062] The processing head 2 may eject the treatment liquid only onto the image formation area of ​​the textile printing object P. Alternatively, the processing head 2 may eject the treatment liquid onto an area wider than the image formation area of ​​the textile printing object P, or onto the entire surface of the textile printing object P. In order to reduce the amount of treatment liquid used and prevent a deterioration in the tactile feel of the printed product, it is preferable that the processing head 2 eject the treatment liquid only onto the image formation area of ​​the textile printing object P. Furthermore, for the same reason, it is more preferable that the processing head 2 eject the treatment liquid only onto the area of ​​the image formation area onto which ink has been ejected by the recording head 1. Since the processing head 2 can accurately control the position onto which the treatment liquid is ejected, it is possible to eject the treatment liquid only onto the area onto which ink has been ejected. In order to accurately control the position onto which the treatment liquid is ejected, it is preferable that the distance between the processing head 2 and the textile printing object P be 1 mm or more and 5 mm or less. Furthermore, in order to efficiently proceed with post-processing using the treatment liquid, it is preferable that only the treatment liquid be ejected from the processing head 2.

[0063] After the treatment liquid is ejected from the treatment head 2 onto the object P to be printed, the mounting table 3 on which the object P to be printed is placed further horizontally, and the object P to be printed is transported to a position facing a heating unit (not shown). The heating unit heats the object P to be printed, thereby drying the ink and treatment liquid. The heating temperature is, for example, 120°C or higher and 180°C or lower. The heating time is, for example, 1 minute or higher and 10 minutes or lower. Heating evaporates volatile components contained in the ink and treatment liquid, facilitating the fixation of the ink and treatment liquid to the object P to be printed. As a result, a printed item is produced, which is the object P to be printed on which an image is formed with ink and which has been treated with treatment liquid.

[0064] The inkjet textile printing apparatus 10 according to the second embodiment has been described above. However, the inkjet textile printing apparatus of the present disclosure is not limited to the inkjet textile printing apparatus 10 described above, and can be modified, for example, as shown in the following modified examples.

[0065] Regarding the first modification, the inkjet printing apparatus 10 may be provided with a sprayer that sprays the treatment liquid, instead of the treatment head 2 that ejects the treatment liquid.

[0066] In the second modified example, the treatment with the treatment liquid may be performed by immersing the printing object P in a tank in which the treatment liquid is stored. When immersing, the amount of treatment liquid ejected, which will be described later in the third embodiment, corresponds to the amount of treatment liquid applied.

[0067] Regarding the third modified example, in the above embodiment, the mounting table 3 moves horizontally, but the recording head 1 and the processing head 2 may move horizontally while the mounting table 3 is fixed.

[0068] Regarding the fourth variant, the mounting table 3 may move horizontally in the transport direction of the object to be printed P, or the recording head 1 and processing head 2 may move horizontally, and the recording head 1 and processing head 2 may move horizontally in a direction perpendicular to the transport direction of the object to be printed P.

[0069] In the fifth modification, the number of recording heads 1 may be one to three, or five or more.

[0070] The sixth modification may be applied to an inkjet printing apparatus that is not a flatbed type. As long as it is equipped with the recording head 1 and the processing head 2, the effects of using the treatment liquid according to the first embodiment can be obtained regardless of the type of inkjet printing apparatus.

[0071] [Third embodiment: inkjet printing method] Next, with continued reference to FIG. 1 , an inkjet printing method according to a third embodiment of the present disclosure will be described. The inkjet printing method according to the third embodiment forms an image in an image formation area of ​​a printing object P using the treatment liquid according to the first embodiment. Furthermore, the inkjet printing method according to the third embodiment forms an image in an image formation area of ​​a printing object P using the inkjet printing device 10 according to the second embodiment. Because the inkjet printing method according to the third embodiment uses the treatment liquid according to the first embodiment, it is possible to produce a printed item with excellent rub fastness and suppress deterioration in the tactile feel of the printed item for the same reasons as those described in the first embodiment. Furthermore, because the treatment liquid according to the first embodiment has excellent ejection properties from the processing head, the inkjet printing method according to the third embodiment can reliably achieve these effects.

[0072] The inkjet printing method according to the third embodiment includes an ink ejection step and a treatment step. In the ink ejection step, ink is ejected from a recording head 1 onto an image formation area of ​​the printing object P. In the treatment step, a treatment liquid is ejected from a treatment head 2 onto at least the image formation area of ​​the printing object P. The treatment liquid is the treatment liquid according to the first embodiment. The treatment step is performed, for example, after the ink ejection step. The inkjet printing method may further include a heating step, as necessary.

[0073] In the ink ejection step, the amount of ink ejected onto the printing object P is, for example, 5 g / m 2 More than 40g / m 2 The following is the result.

[0074] In the treatment step, the amount of treatment liquid discharged onto the object to be printed P depends on the type of silicone oil, but is, for example, 10 g / m 2 More than 120g / m 2 In the treatment step, when the treatment liquid is discharged from the treatment head 2 onto the object to be printed P, the discharge amount of the treatment liquid is 5 g / m 2 More than 30g / m 2 The discharge amount of the treatment liquid is preferably 5 g / m or less. 2More than 30g / m 2 By setting the content within the following range, it is possible to more reliably produce a printed item that is excellent in both dry rub fastness and wet rub fastness.

[0075] The discharge amount of the treatment liquid depends on the type of silicone oil, but is 5 g / m 2 More than 20g / m 2 More preferably, it is 5 g / m or less. 2 More than 10g / m 2 It is even more preferable that the treatment liquid ejection amount is less than or equal to 7% by mass. By adjusting the ejection amount of the treatment liquid to this range, when using the inkjet treatment liquid according to the first embodiment, which has a silicone oil content of 7% by mass or more and 15% by mass or less, it is possible to produce printed items that are superior in both dry rub fastness and wet rub fastness. In particular, when the silicone oil contains at least a carboxy-modified silicone oil, the effect of significantly improving rub fastness can be more reliably achieved within the above-mentioned range of the ejection amount of the treatment liquid. The inkjet printing method according to the third embodiment has been described above with reference to FIG. 1.

[0076] [Inks used in the second and third embodiments] Next, the ink used in the second and third embodiments will be described. The ink contains, for example, a pigment and an aqueous medium. If necessary, the ink may further contain at least one selected from the group consisting of a surfactant, a polyol, and binder resin particles.

[0077] (pigment) The pigment is present, for example, in a dispersed state in an aqueous medium. From the viewpoint of obtaining an ink excellent in image density, hue, and color stability, the D 50 is preferably 30 nm or more and 250 nm or less, and more preferably 70 nm or more and 160 nm or less.

[0078] Examples of pigments include yellow pigments, orange pigments, red pigments, blue pigments, purple pigments, and black pigments. Yellow pigments include, for example, CI Pigment Yellow (74, 93, 95, 109, 110, 120, 128, 138, 139, 151, 154, 155, 173, 180, 185, and 193). Orange pigments include, for example, CI Pigment Orange (34, 36, 43, 61, 63, and 71). Red pigments include, for example, CI Pigment Red (122 and 202). Blue pigments include, for example, CI Pigment Blue (15, more specifically 15:3). Purple pigments include, for example, CI Pigment Violet (19, 23, and 33). Black pigments include, for example, CI Pigment Black (7).

[0079] The pigment content is preferably 1% by mass or more and 12% by mass or less, and more preferably 1% by mass or more and 7% by mass or less, based on the mass of the ink. A pigment content of 1% by mass or more can improve the image density of the resulting printed textile. Furthermore, a pigment content of 12% by mass or less can provide an ink with high fluidity.

[0080] (aqueous medium) The aqueous medium contained in the ink is the same as the aqueous medium contained in the treatment liquid described in Embodiment 1. The content of the aqueous medium is preferably 5% by mass or more and 70% by mass or less, and more preferably 40% by mass or more and 60% by mass or less, relative to the mass of the ink.

[0081] (surfactant) The ink contains a surfactant, which improves the ink's wettability to the printing substrate. Examples of surfactants include anionic surfactants, cationic surfactants, nonionic surfactants, and amphoteric surfactants. The surfactant contained in the ink is preferably a nonionic surfactant. The nonionic surfactant is preferably a surfactant having an acetylene glycol structure, more preferably an acetylene diol ethylene oxide adduct. The HLB value of the surfactant is preferably 3 to 20, more preferably 6 to 16, and even more preferably 7 to 10. The HLB value of the surfactant is calculated, for example, by the Griffin method using the formula "HLB value = 20 × (sum of formula weights of hydrophilic moieties) / molecular weight." To improve image density while suppressing image offset, the surfactant content is preferably 0.1 to 5.0% by mass, more preferably 0.5 to 2.0% by mass, based on the mass of the ink.

[0082] (Polyol) The ink contains a polyol, which allows the viscosity of the ink to be suitably adjusted. The polyol contained in the ink is synonymous with the polyol contained in the treatment liquid described in the first embodiment. When the ink contains a polyol, in order to suitably adjust the viscosity of the ink, the polyol content is preferably 5% by mass or more and 60% by mass or less, and more preferably 20% by mass or more and 50% by mass or less, relative to the mass of the ink.

[0083] (binder resin particles) The binder resin particles exist in a dispersed state in the aqueous medium. The binder resin particles function as a binder that binds the subject to be printed and the pigment. Therefore, by including the binder resin particles in the ink, it is possible to obtain a printed product with excellent pigment fixation.

[0084] Examples of resins contained in the binder resin particles include urethane resin, (meth)acrylic resin, styrene-(meth)acrylic resin, styrene-maleic acid copolymer, vinylnaphthalene-(meth)acrylic acid copolymer, and vinylnaphthalene-maleic acid copolymer. The resin contained in the binder resin particles is preferably urethane resin. The content of the urethane resin in the binder resin particles is preferably 80% by mass or more, more preferably 100% by mass.

[0085] The binder resin content is preferably 1% by mass or more and 20% by mass or less, and more preferably 2% by mass or more and 10% by mass or less, relative to the mass of the ink. When the binder resin particle content is 1% by mass or more, a printing object with excellent pigment fixation can be obtained. On the other hand, when the binder resin particle content is 20% by mass or less, the ink can be stably ejected onto the printing object.

[0086] (additives) The ink may further contain known additives (more specifically, a dissolution stabilizer, an anti-drying agent, an antioxidant, a viscosity adjuster, a pH adjuster, an anti-mold agent, etc.) as needed.

[0087] (Ink manufacturing method) The ink is produced by mixing the pigment, the aqueous medium, and optional components (e.g., surfactant, polyol, and binder resin particles) using a mixer for a mixing time of, for example, 1 minute to 30 minutes.

[0088] Summary of this disclosure A treatment liquid for inkjet printing according to a first aspect of the present disclosure includes emulsified particles containing silicone oil and an aqueous medium, The content of the silicone oil is 7% by mass or more and 15% by mass or less.

[0089] This inkjet treatment liquid suppresses deterioration in the feel of printed textiles, enables the production of printed textiles with excellent rub fastness, and has excellent ejection properties from the treatment head of an inkjet printing device.

[0090] In the inkjet treatment liquid, the content of the silicone oil may be 10% by mass or more and 13% by mass or less.

[0091] When the content of silicone oil is 10% by mass or more and 13% by mass or less, it is possible to produce a printed item having excellent wet rub fastness and dry rub fastness.

[0092] In the inkjet treatment liquid described above, the silicone oil may contain at least an ionic group-containing silicone oil.

[0093] By including at least an ionic group-containing silicone oil, it is possible to produce a printed item having superior wet rub fastness.

[0094] The inkjet treatment liquid may be used for textile printing.

[0095] By using the inkjet treatment liquid for textile printing, the effects of preventing deterioration in the feel of the printed textile and of providing excellent rub fastness can be more effectively exhibited.

[0096] An inkjet printing apparatus according to a second aspect of the present disclosure includes a recording head that ejects ink onto an image formation area of ​​a printing target, and a treatment head that ejects a treatment liquid onto at least the image formation area of ​​the printing target, The treatment liquid is an inkjet treatment liquid according to a first aspect of the present disclosure.

[0097] This inkjet printing apparatus uses the inkjet treatment liquid according to the first aspect of the present disclosure, and therefore can produce printed items with reduced deterioration in tactile feel and with excellent rub fastness. Furthermore, because the inkjet treatment liquid has excellent ejection properties from the treatment head, the effects of the inkjet treatment liquid according to the first aspect of the present disclosure on printed items can be reliably exerted.

[0098] An inkjet printing method according to a third aspect of the present disclosure includes an ink ejection step of ejecting ink from a recording head onto an image formation area of ​​a printing target, and a processing step of ejecting a treatment liquid from a processing head onto at least the image formation area of ​​the printing target, The treatment liquid is an inkjet treatment liquid according to a first aspect of the present disclosure.

[0099] This inkjet printing method uses the inkjet treatment liquid according to the first aspect of the present disclosure, and therefore can produce a printed item with reduced deterioration in tactile feel and excellent rub fastness. Furthermore, because the inkjet treatment liquid has excellent ejection properties from the treatment head, the effects of the inkjet treatment liquid according to the first aspect of the present disclosure on the printed item can be reliably exerted.

[0100] In the inkjet printing method, the ejection amount of the inkjet treatment liquid is 5 g / m 2 More than 30g / m 2 It may be the following:

[0101] According to the ink-jet printing method having this configuration, it is possible to more reliably produce printed items with excellent rub fastness.

[0102] In the inkjet textile printing method, the ejection amount of the inkjet treatment liquid is 5 g / m 2 More than 10g / m 2 It may be the following:

[0103] According to the ink-jet printing method having this configuration, it is possible to more reliably produce printed items with excellent rub fastness. [Example]

[0104] The present disclosure will be explained in more detail below using examples, but the present disclosure is not limited to these examples in any way.

[0105] In this example, various printed textiles were produced by varying the type of inkjet treatment liquid (specifically, the type and content of silicone oil in the treatment liquid) and the amount of treatment liquid ejected. The rub fastness and tactile sensation of the printed textiles were then evaluated. Furthermore, in this example, the ejection properties of the treatment liquid from the nozzle were also evaluated according to the content of silicone oil in the inkjet treatment liquid.

[0106] 1. Evaluation test of the prevention of deterioration in the rub fastness and tactile feel of printed textiles when the type of treatment liquid (type and content of silicone oil in the treatment liquid) is changed In this test, the amount of treatment liquid discharged when producing the printed material was 20 g / m 2 Various types of printed textiles were produced by varying the type and content of silicone oil in the treatment liquid.Then, the rub fastness and the suppression of deterioration in the feel of the printed textiles were evaluated.

[0107] [How to prepare the processing solution] The treatment liquids (A-1) to (A-6) and treatment liquids (B-1) to (B-2) used in this evaluation test were prepared by the following methods. The silicone oil content was calculated by rounding off to the first decimal place.

[0108] <Preparation of Treatment Solution (A-1)> First, raw material emulsion A to be contained in treatment liquid (A-1) was prepared. Specifically, 300 g of amino-modified silicone oil ("KF-864" manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 1,700 mm 2A beaker was charged with 600 g of ion-exchanged water (H2O, specific gravity: 0.98, functional group equivalent: 3,800 g / mol), 600 g of ion-exchanged water, and 100 g of hydrochloric acid (concentration: 1 mol / L). The contents of the beaker were stirred at 10,000 rpm for 15 minutes using a homogenizer (IKA Ultra Turrax T25) and allowed to stand for 30 minutes. The contents of the beaker were then filtered through a 120-mesh stainless steel filter to obtain Raw Emulsion A. Emulsified particles of amino-modified silicone oil were dispersed in Raw Emulsion A. The average particle size of the emulsified particles contained in Raw Emulsion A was 150 nm.

[0109] Next, the treatment liquid (A-1) was prepared using the raw emulsion A prepared as described above. Specifically, 33.30 g of raw emulsion A (amino-modified silicone oil content: 30 mass%, amino-modified silicone oil content: 9.99 g), 33.35 g of ion-exchanged water, and 33.35 g of propylene glycol were mixed to obtain the treatment liquid (A-1). In the treatment liquid (A-1), the content of amino-modified silicone oil was 10 mass%.

[0110] <Preparation of Treatment Solution (A-2)> The treatment liquid (A-2) was prepared using the raw emulsion A prepared as described above. Specifically, 50.00 g of raw emulsion A (amino-modified silicone oil content: 30 mass %, amino-modified silicone oil content: 15.00 g), 35.00 g of ion-exchanged water, and 15.00 g of propylene glycol were mixed to obtain the treatment liquid (A-2). In the treatment liquid (A-2), the amino-modified silicone oil content was 15 mass %.

[0111] <Preparation of Treatment Solution (A-3)> First, raw material emulsion B to be contained in treatment liquid (A-3) was prepared. Specifically, 300 g of carboxy-modified silicone oil ("X-22-3701E" manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 2,000 mm 2A beaker was charged with 600 g of ion-exchanged water (H2O, specific gravity: 0.98, functional group equivalent: 4,000 g / mol), 600 g of ion-exchanged water, and 100 g of aqueous sodium hydroxide solution (concentration: 1 mol / L). The contents of the beaker were stirred at 10,000 rpm for 15 minutes using a homogenizer (IKA Ultra Turrax T25) and allowed to stand for 30 minutes. The contents of the beaker were then filtered through a 120-mesh stainless steel filter to obtain Raw Material Emulsion B. Emulsified particles of carboxy-modified silicone oil were dispersed in Raw Material Emulsion B. The average particle size of the emulsified particles contained in Raw Material Emulsion B was 120 nm.

[0112] Next, treatment liquid (A-3) was prepared using raw emulsion B prepared as described above. Specifically, treatment liquid (A-3) was obtained in the same manner as treatment liquid (A-1), except that raw emulsion A (amino-modified silicone oil content: 30% by mass) was replaced with raw emulsion B (carboxy-modified silicone oil content: 30% by mass). In treatment liquid (A-3), the content of carboxy-modified silicone oil was 10% by mass.

[0113] <Preparation of Treatment Solution (A-4)> First, raw material emulsion C to be contained in treatment liquid (A-4) was prepared. Specifically, 300 g of amino-modified silicone oil ("KF-877" manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 5,700 mm 2 A beaker was charged with 600 g of ion-exchanged water and 100 g of hydrochloric acid (concentration: 1 mol / L) (saturated fatty acid, specific gravity: 0.98, functional group equivalent: 5,200 g / mol). Using a homogenizer (IKA Ultra Turrax T25) the contents of the beaker were stirred at a rotation speed of 10,000 rpm for 15 minutes and then allowed to stand for 30 minutes. The contents of the beaker were then filtered through a 120-mesh stainless steel filter to obtain Raw Material Emulsion C. Emulsified particles of amino-modified silicone oil were dispersed in Raw Material Emulsion C. The average particle size of the emulsified particles contained in Raw Material Emulsion C was 200 nm.

[0114] Next, the treatment liquid (A-4) was prepared using the raw emulsion C prepared as described above. Specifically, the treatment liquid (A-4) was obtained in the same manner as the treatment liquid (A-1), except that the raw emulsion A (amino-modified silicone oil content: 30% by mass) was replaced with the raw emulsion C (amino-modified silicone oil content: 30% by mass). In the treatment liquid (A-4), the amino-modified silicone oil content was 10% by mass.

[0115] <Preparation of Treatment Solution (A-5)> First, raw material emulsion D to be contained in treatment liquid (A-5) was prepared. Specifically, 180 g of unmodified silicone oil (specifically, dimethylpolysiloxane) ("KF96-3000cs" manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 3,000 mm 2 / s, specific gravity: 0.97), and 120 g of phenol-modified silicone oil ("KF2201" manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 97 m 2 / s, specific gravity: 0.99, functional group equivalent: 1,474 g / mol) and a viscosity of 1,000 mm 2 A mixture MD having a viscosity of 1 / s was obtained. 300 g of mixture MD, 600 g of ion-exchanged water, and 100 g of aqueous sodium hydroxide solution (concentration 1 mol / L) were placed in a beaker. The contents of the beaker were stirred at a rotation speed of 10,000 rpm for 15 minutes using a homogenizer (IKA "Ultra Turrax T25") and allowed to stand for 30 minutes. The contents of the beaker were then filtered through a 120-mesh stainless steel filter to obtain raw emulsion D. Raw emulsion D contained dispersed emulsified particles containing unmodified silicone oil and phenol-modified silicone oil. The average particle diameter of the emulsified particles contained in raw emulsion D was 160 nm.

[0116] Next, treatment liquid (A-5) was prepared using raw emulsion D prepared as described above. Specifically, treatment liquid (A-5) was obtained in the same manner as treatment liquid (A-1), except that raw emulsion A (amino-modified silicone oil content: 30% by mass) was replaced with raw emulsion D (content of mixture of phenol-modified silicone oil and unmodified silicone oil: 30% by mass). In treatment liquid (A-5), the content of the mixture of phenol-modified silicone oil and unmodified silicone oil was 10% by mass.

[0117] <Preparation of Treatment Solution (A-6)> First, raw material emulsion E to be contained in treatment liquid (A-6) was prepared. Specifically, 180 g of unmodified silicone oil ("KF96-3000cs" manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 3,000 mm 2 / s, specific gravity: 0.97), and 120 g of silanol-modified silicone oil ("KF9701" manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 60 mm 2 / s, specific gravity: 0.977, functional group equivalent: 1,500 g / mol) and a viscosity of 1,200 mm 2 A mixture ME with a concentration of 1 / s was obtained. 300 g of mixture ME, 600 g of ion-exchanged water, and 100 g of aqueous sodium hydroxide solution (concentration 1 mol / L) were placed in a beaker. The contents of the beaker were stirred at a rotation speed of 10,000 rpm for 15 minutes using a homogenizer (IKA "Ultra Turrax T25") and allowed to stand for 30 minutes. The contents of the beaker were then filtered through a 120-mesh stainless steel filter to obtain raw emulsion E. Raw emulsion E contained dispersed emulsified particles containing unmodified silicone oil and silanol-modified silicone oil. The average particle size of the emulsified particles contained in raw emulsion E was 220 nm.

[0118] Next, the treatment liquid (A-6) was prepared using the raw emulsion E prepared as described above. Specifically, except that raw emulsion A (content of amino-modified silicone oil: 30 mass%) was changed to raw emulsion E (content of mixture of silanol-modified silicone oil and unmodified silicone oil: 30 mass%), the treatment liquid (A-6) was obtained by the same method as the treatment liquid (A-1). In the treatment liquid (A-6), the content of the mixture of silanol-modified silicone oil and unmodified silicone oil was 10 mass%.

[0119] <Preparation of Treatment Solution (B-1)> The treatment liquid (B-1) was prepared using the raw emulsion A prepared as described above. Specifically, 10.00 g of raw emulsion A (amino-modified silicone oil content: 30 mass%, amino-modified silicone oil content: 3.00 g), 55.00 g of ion-exchanged water, and 35.00 g of propylene glycol were mixed to obtain the treatment liquid (B-1). In the treatment liquid (B-1), the amino-modified silicone oil content was 3 mass%.

[0120] <Preparation of Treatment Solution (B-2)> The treatment liquid (B-2) was prepared using the raw emulsion A prepared as described above. Specifically, 65.00 g of raw emulsion A (amino-modified silicone oil content: 30 mass %, amino-modified silicone oil content: 19.50 g) and 35.00 g of propylene glycol were mixed to obtain the treatment liquid (B-2). In the treatment liquid (B-2), the amino-modified silicone oil content was 20 mass %.

[0121] The types of raw emulsions, types and contents of silicone oils, and viscosities of silicone oils in treatment liquids (A-1) to (A-6) and treatment liquids (B-1) to (B-2) are summarized in Table 1 below.

[0122] [Table 1]

[0123] In Table 1 and Table 4 below, the meanings of the terms are as follows: "Amount" indicates the content of silicone oil in the treatment liquid; "wt%" indicates mass %; "Viscosity" indicates the viscosity of the silicone oil. When the emulsified particles contain two or more types of silicone oil, "viscosity" indicates the viscosity of the mixture of two or more types of silicone oil.

[0124] As shown in Table 1 above, all of treatment liquids (A-1) to (A-6) contain emulsion particles containing silicone oil and an aqueous medium. Furthermore, all of treatment liquids (A-1) to (A-6) have a silicone oil content in the range of 7% to 15% by mass. On the other hand, the silicone oil content of treatment liquid (B-1) is 3% by mass, and the silicone oil content of treatment liquid (B-2) is 20% by mass, which are outside the range of 7% to 15% by mass.

[0125] [Methods for measuring each physical property] The average particle size of the emulsified particles in the raw emulsion and the viscosity of the silicone oil were measured by the methods described below.

[0126] <Measurement of the average particle size of emulsion particles> The average particle size of the emulsified particles was measured using a laser diffraction particle size analyzer (Malvern Instruments' "Zetasizer Nano ZS") in accordance with the method described in ISO 13321:1996 (Particle size analysis - Photon correlation spectroscopy). The average particle size of the emulsified particles was measured using a measurement sample prepared by diluting the treatment liquid 1000 times with water. The average particle size of the emulsified particles contained in the raw emulsion and the average particle size of the emulsified particles contained in the treatment liquid were nearly identical.

[0127] <Measurement of silicone oil viscosity> The viscosity of the silicone oil was measured in accordance with the method described in JIS Z8803:2011 (Method for measuring viscosity of liquids) at a temperature of 25° C. The viscosity of the silicone oil was measured using an Ubbelohde viscometer described in "6.2.3 Ubbelohde viscometer" of JIS Z8803:2011.

[0128] [Evaluation method] Using each of the prepared treatment liquids, the rub fastness and the suppression of deterioration in the feel of various printed textiles were evaluated. Specifically, evaluation inks and evaluation printed textiles were prepared using the evaluation inks and each treatment liquid, and the rub fastness and the suppression of deterioration in the feel of the printed textiles were evaluated. Details of the preparation methods of the evaluation inks, the preparation methods of the evaluation printed textiles, and the various evaluation methods are described below.

[0129] <Method for preparing ink for evaluation> Inks a and b to be used for evaluating the treatment liquid were prepared by the following method.

[0130] (Method for producing ink a) A 1-liter, three-necked flask equipped with a stirring blade was charged with 125 g of ion-exchanged water and 2 g of a nonionic surfactant (Nissin Chemical Industry Co., Ltd.'s "Surfynol (registered trademark) 440," content: acetylene glycol ethylene oxide adduct). While stirring the contents of the flask, 165 g of propylene glycol, 100 g of a black pigment dispersion (Sanyo Pigment Co., Ltd.'s "AE2078F," content: CI Pigment Black 7, solids concentration: 20% by mass), and 108 g of a binder resin particle dispersion (Dai-ichi Kogyo Seiyaku Co., Ltd.'s "Superflex 470," content: polyurethane dispersion, solids concentration: 38% by mass) were sequentially added to the flask. The contents of the flask were stirred for 10 minutes to obtain ink a.

[0131] (Method for producing ink b) A 1-liter, three-necked flask equipped with a stirring blade was charged with 140 g of ion-exchanged water and 2 g of a nonionic surfactant (Nissin Chemical Industry Co., Ltd.'s "Surfynol® 440," content: acetylene glycol ethylene oxide adduct). While stirring the contents of the flask, 225 g of propylene glycol, 83 g of a black pigment dispersion (Dainichiseika Color & Chemicals Mfg. Co., Ltd.'s "ACAK1," content: CI Pigment Black 7, solids concentration: 15% by mass), and 50 g of a binder resin particle dispersion (Ube Industries, Ltd.'s "Eternacoll® UW-1527F," content: polyurethane dispersion, solids concentration: 40% by mass) were sequentially added to the flask. The contents of the flask were stirred for 10 minutes to obtain ink b.

[0132] <Method for preparing printed items for evaluation> Printed textiles for evaluation were prepared using the inks and treatment liquids shown in Table 2. For example, treatment liquid (A-1) and ink a were used for the evaluation of Example 1-1 in Table 2.

[0133] The subject of printing was cotton broadcloth (manufactured by Irosen Co., Ltd., size: A4 size, cotton count of warp and weft: 40 / 1, warp density: 130 threads / inch, weft density: 75 threads / inch, basis weight: 122 g / m 2 ) was used. An inkjet printer ("Colorio (registered trademark) PX-045A" manufactured by Seiko Epson Corporation) was used to prepare the printed textile for evaluation. The first ink chamber of the first cartridge was filled with ink. The second ink chamber of the second cartridge was filled with treatment liquid. The first cartridge and the second cartridge were mounted on the inkjet printer. The ink filled in the first ink chamber was ejected from the recording head of the inkjet printer. The treatment liquid filled in the second ink chamber was ejected from the treatment head of the inkjet printer.

[0134] Using an inkjet printer, the ink ejection rate was 20 g / m 2Then, the ink was ejected from the recording head onto the object to be printed so that the ejection amount of the treatment liquid was 20 g / m as described above, thereby forming a solid image of the ink. 2 The treatment liquid was ejected from the treatment head onto the object to be printed so that the ink was uniformly distributed over the solid image. In this way, a treatment film of the same size as the solid image was formed using the treatment liquid on top of the solid image of ink. The object to be printed was then heated at 160°C for 3 minutes to dry the ink and treatment liquid, yielding a printed item for evaluation.

[0135] <Evaluation of friction fastness> The solid image formed on the evaluation print was rubbed with a white cotton cloth for rubbing in accordance with the dry and wet tests using the Type II Rub Tester (Gakushin Type) method described in JIS L-0849:2013 (Testing Methods for Color Fastness to Rubbing). The degree of discoloration of the white cotton cloth after rubbing was evaluated in accordance with the "Criteria for Judging Discoloration and Fading" described in Clause 10 (Judgment of Color Fastness) of JIS L-0801:2011 (General Rules for Testing Methods for Color Fastness). The degree of discoloration of the white cotton cloth for rubbing was evaluated on a nine-point scale (Grade 1, Grade 1-2, Grade 2, Grade 2-3, Grade 3, Grade 3-4, Grade 4, Grade 4-5, and Grade 5, in descending order of staining). The lower the degree of discoloration of the white cotton cloth for rubbing (closer to Grade 5), the better the rub fastness. The degree of discoloration of the white cotton cloth for rubbing after the rub test was evaluated for dry rub fastness and wet rub fastness according to the following criteria. The results of the dry test were taken as dry friction fastness, and the results of the wet test were taken as wet friction fastness. A rating of A or B was considered to be pass, and a rating of C was considered to be fail. The determined friction fastness and the evaluation results are summarized in Table 2 below.

[0136] (Evaluation criteria for dry rub fastness) Evaluation A: Dry rub fastness is grade 4 or higher. Evaluation B: Dry rub fastness is grade 3 to 4. Evaluation C: Dry rub fastness is grade 3 or lower.

[0137] (Evaluation criteria for wet friction fastness) Evaluation A: Wet rubbing fastness is grade 3 or higher. Evaluation B: Wet rubbing fastness is grade 2 to 3. Evaluation C: Wet rubbing fastness is grade 2 or lower.

[0138] <Evaluation of prevention of deterioration of tactile sensation> An unused object to be printed was folded in half along the warp (lengthwise), and the distance (loop height) between the lower and upper fabrics at the fold was measured. The measured loop height of the unused object to be printed was taken as the loop height before printing. Next, the area of ​​the printed fabric for evaluation where the solid image was formed was folded in half along the warp (lengthwise), and the loop height was measured. The measured loop height of the printed fabric for evaluation was taken as the loop height after printing. The change in loop height (unit: %) before and after printing was calculated according to the formula: "Change in loop height = 100 × loop height after printing / loop height before printing." A lower change in loop height indicates that the object to be printed does not harden or swell after printing, and therefore, the deterioration in the feel of the printed fabric is suppressed. From the change in loop height, whether or not the deterioration in the feel of the printed fabric is suppressed was evaluated according to the following criteria. A rating of A or B was considered to be pass, and a rating of C was considered to be fail. The evaluation results regarding the rate of change in the measured loop height and the suppression of deterioration in the tactile feel are summarized in Table 2 below.

[0139] (Evaluation criteria for preventing deterioration of tactile sensation) Evaluation A: The rate of change in loop height is 125% or less. Grade B: The rate of change in loop height is more than 125% and 130% or less. Rating C: The rate of change in loop height exceeds 130%.

[0140] [Table 2]

[0141] In Table 2 above and Table 3 below, the meanings of each term are as follows: "Touch" indicates an evaluation of the suppression of deterioration in the touch of the printed material; "Height" indicates the rate of change in loop height before and after printing; "1-2," "2-3," "3-4," and "4-5" in the column for rub fastness indicate that the degree of coloration of the white cotton rubbing cloth is grade 1-2, grade 2-3, grade 3-4, and grade 4-5, respectively.

[0142] [Consideration] As shown in Table 2 above, for the printed textiles produced using treatment liquids (A-1) to (A-6), the evaluation of dry rub fastness, wet rub fastness, and suppression of deterioration in touch was all A or B, regardless of the type of ink. On the other hand, for the printed textiles produced using treatment liquids (B-1) and (B-2), at least one of the evaluations of dry rub fastness, wet rub fastness, and suppression of deterioration in touch was C. Therefore, it is determined that the inkjet treatment liquid of this embodiment, which includes treatment liquids (A-1) to (A-6), can produce printed textiles with excellent rub fastness and suppress deterioration in touch of printed textiles.

[0143] 2. Evaluation test of the suppression of deterioration in the rub fastness and tactile feel of printed textiles when the amount of treatment liquid discharged is changed In this test, the above-mentioned treatment liquid (A-1) was used as the inkjet treatment liquid, and various evaluation printed textiles were prepared while varying the amount of treatment liquid ejected, and the rubbing fastness and the suppression of deterioration in the tactile feel of the evaluation printed textiles were evaluated.

[0144] <Method of producing printed textiles for evaluation in Example 1-1, Example 1-8 to Example 1-10, and Example 1-7> The evaluation printed textiles of Examples 1-1, 1-8 to 1-10, and 1-7 were prepared in the same manner as the evaluation printed textile preparation method described in 1 above, except for the following changes: Specifically, the first ink chamber of the first cartridge was filled with the ink shown in Table 3 below, and the second ink chamber of the second cartridge was filled with treatment liquid (A-1). In each example, the ejection amount of the treatment liquid was set to the ejection amount shown in Table 3 below. The ejection amount of the ink was 20 g / m 2 It was left unchanged.

[0145] <Method for producing printed items for evaluation in Examples 1-11> In preparing the printed textile for evaluation in Examples 1-11, a printed subject on which a solid ink image was formed was prepared by the same method as the method for preparing the printed textile for evaluation described in 1 above, except for the following changes. Specifically, the first ink chamber of the first cartridge was filled with the ink shown in Table 3 below, and the second ink chamber of the second cartridge was not filled with the treatment liquid. In other words, the discharge amount of the treatment liquid was set to 0 g / m. 2 The ink ejection amount was set to 20 g / m, and the processing liquid was not ejected from the processing head. 2 It was left unchanged.

[0146] Next, the object to be printed on which the ink solid image was formed was immersed in the treatment liquid (A-1), and then taken out of the treatment liquid (A-1) and lightly squeezed. More specifically, the pickup rate was 100% and the application amount of the treatment liquid (A-1) was 120 g / m 2 The squeezed object to be printed was heated at 160°C for 3 minutes to dry the ink and treatment liquid, thereby obtaining a printed item for evaluation.

[0147] <Evaluation of friction fastness and prevention of deterioration of tactile sensation> The evaluation printed textiles produced using the treatment liquid (A-1) of Examples 1-1, 1-8 to 1-11, and 1-7 were evaluated using the same method as for the evaluation of rub fastness as described in 1 above, and the same method as for the evaluation of suppression of deterioration in the tactile feel as described in 1 above. The evaluation results are shown in Table 3 below. The evaluation results for the evaluation printed textiles produced using the treatment liquid (A-1) used in Examples 1-1 and 1-7 have already been shown in Table 2 above, but are shown again in Table 3 below to facilitate understanding.

[0148] [Table 3]

[0149] [Consideration] As shown in Table 3 above, when the treatment liquid (A-1) containing amino-modified silicone oil was used as the silicone oil, 2 More than 120g / m 2 For the printed products produced with the following discharge amounts (including application amounts), the evaluation of dry rub fastness, wet rub fastness and suppression of deterioration in touch was A or B. 2 More than 120g / m 2 It is believed that by ejecting or applying the inkjet treatment liquid of this embodiment in the wide range of ejection amount (including application amount) below, it is possible to produce a printed item with excellent rub fastness and to suppress deterioration in the feel of the printed item.

[0150] Furthermore, as shown in Table 3 above, when the treatment liquid (A-1) containing amino-modified silicone oil was used as the silicone oil, the 2 More than 30g / m 2 The dry rub fastness of the printed products produced at the following discharge amounts was evaluated as A. Therefore, when the treatment liquid contains amino-modified silicone oil, 2 More than 30g / m 2 It is believed that by ejecting the inkjet treatment liquid of this embodiment in an amount within the following range, it is possible to produce a printed item that is particularly excellent in dry rub fastness.

[0151] 3. Evaluation test of friction resistance and ejection properties when the silicone oil content is changed In this test, the amount of treatment liquid discharged when producing the printed material was 5.1 g / m, which is less than that in test 1 above. 2 Various types of printed textiles were produced by changing the content (and type) of silicone oil in the treatment liquid. The rub fastness of the various printed textiles produced was then evaluated. At the same time, the dischargeability of the treatment liquid from the nozzle was also evaluated.

[0152] [How to prepare the processing solution] In this test, treatment solutions with various carboxy-modified silicone oil contents and treatment solutions containing both carboxy-modified silicone oil and unmodified silicone oil were used. The detailed preparation methods for treatment solutions (C-1) to (C-5) and treatment solutions (D-1) to (D-2) used in this test are described below. The silicone oil contents were calculated by rounding to the nearest tenth.

[0153] <Preparation of Treatment Solution (C-1)> Treatment liquid (C-1) was obtained in the same manner as the preparation method for treatment liquid (A-3) described in 1 above, except that the amount of raw material emulsion B was 23.33 g, the amount of ion-exchanged water was 43.32 g, and the amount of propylene glycol was 33.3 g. The content of carboxy-modified silicone oil in treatment liquid (C-1) was 7 mass%.

[0154] <Preparation of Treatment Solution (C-2)> Treatment liquid (C-2) is the same treatment liquid as the treatment liquid (A-3) described above. It was given a different name to facilitate comparison with other treatment liquids in this evaluation test. That is, the content of carboxy-modified silicone oil in treatment liquid (C-2) was 10% by mass.

[0155] <Preparation of Treatment Solution (C-3)> First, two types of raw material emulsions contained in the treatment liquid (C-3) were prepared. Specifically, 300 g of unmodified silicone oil (specifically, dimethylpolysiloxane) ("KF96-3000cs" manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 3,000 mm 2 A beaker was charged with 610 g of ion-exchanged water (10000 rpm, specific gravity: 0.97), 610 g of ion-exchanged water, and 90 g of surfactant (polyoxyethylene alkyl ether). The contents of the beaker were stirred for 15 minutes at a rotation speed of 10,000 rpm using a homogenizer (IKA "Ultra Turrax T25") and then allowed to stand for 30 minutes. The contents of the beaker were then filtered through a 120-mesh stainless steel filter to obtain a first raw emulsion. This first raw emulsion contained dispersed emulsified particles containing unmodified silicone oil. Furthermore, 300 g of carboxy-modified silicone oil (Shin-Etsu Chemical Co., Ltd. "X-22-3701E", viscosity: 2,000 mm) was added. 2 The second raw emulsion was obtained by mixing the two materials (sodium carboxy-modified silicone oil, specific gravity: 0.98, functional group equivalent: 4,000 g / mol) and adding 600 g of ion-exchanged water and 100 g of sodium hydroxide solution (concentration: 1 mol / L) to a beaker. The same procedure was repeated to obtain the second raw emulsion. This second raw emulsion contained dispersed emulsified particles containing carboxy-modified silicone oil.

[0156] Then, the first raw emulsion and the second raw emulsion prepared as above are used to prepare treatment liquid (C-3).Specifically, 16.67g of the first raw emulsion (content of unmodified silicone oil: 5% by mass), 16.67g of the second raw emulsion (content of carboxy-modified silicone oil: 5% by mass), 33.31g of ion-exchanged water, and 33.35g of propylene glycol are mixed to obtain treatment liquid (C-3).The content of carboxy-modified silicone oil in treatment liquid (C-3) is 5% by mass, and the content of unmodified silicone oil is 5% by mass.

[0157] <Preparation of Treatment Solution (C-4)> Treatment liquid (C-4) was obtained in the same manner as the preparation method for treatment liquid (A-3) described in 1. above, except that the amount of raw material emulsion B was 43.33 g, the amount of ion-exchanged water was 23.32 g, and the amount of propylene glycol was 33.35 g. The content of carboxy-modified silicone oil in treatment liquid (C-4) was 13 mass%.

[0158] <Preparation of Treatment Solution (C-5)> Treatment liquid (C-5) was obtained in the same manner as the preparation method for treatment liquid (A-3) described in 1. above, except that the amount of raw material emulsion B was 50 g, the amount of ion-exchanged water was 16.65 g, and the amount of propylene glycol was 33.35 g. The content of carboxy-modified silicone oil in treatment liquid (C-5) was 15 mass%.

[0159] <Preparation of Treatment Solution (D-1)> Treatment liquid (D-1) was obtained in the same manner as the preparation method for treatment liquid (A-3) described in 1 above, except that the amount of raw material emulsion B was 20 g, the amount of ion-exchanged water was 46.65 g, and the amount of propylene glycol was 33.35 g. The content of carboxy-modified silicone oil in treatment liquid (D-1) was 6 mass%.

[0160] <Preparation of Treatment Solution (D-2)> Treatment liquid (D-2) was obtained in the same manner as the preparation method for treatment liquid (A-3) described in 1. above, except that the amount of raw material emulsion B was 53.33 g, the amount of ion-exchanged water was 13.32 g, and the amount of propylene glycol was 33.35 g. The content of carboxy-modified silicone oil in treatment liquid (D-2) was 16 mass%.

[0161] Next, printed items for evaluation were prepared using the prepared treatment liquids (C-1) to (C-5) and treatment liquids (D-1) to (D-2), and their rub fastness was evaluated.

[0162] <Methods for producing printed textiles for evaluation in Examples 2-1 to 2-5 and Comparative Examples 2-1 and 2-2> The printed textiles for evaluation of Examples 2-1 to 2-5 and Comparative Examples 2-1 to 2-2 were produced by the same method as the method for producing the printed textiles for evaluation described in 1 above, except for the following changes: Specifically, the first ink chamber of the first cartridge was filled with the ink shown in Table 4 below, and the second ink chamber of the second cartridge was filled with treatment liquids (C-1) to (C-5) or treatment liquids (D-1) to (D-2) shown in Table 4 below. The method for producing the inks used was the same as the method described in 1 above. In each of the Examples and Comparative Examples, the ejection amount of the treatment liquid was 5.1 g / m as mentioned above. 2 The ink ejection rate was set to 20 g / m 2 It was decided.

[0163] <Evaluation of friction fastness> The printed materials of Examples 2-1 to 2-5 and Comparative Examples 2-1 and 2-2 were evaluated by the same method as for evaluating rub fastness described above in 1. The evaluation results of the printed materials of each Example and Comparative Example are summarized in Table 4 below.

[0164] In this test, the dischargeability from the treatment head of the treatment liquids (C-1) to (C-5) and the treatment liquids (D-1) to (D-2) used in each example and comparative example was also evaluated. The method for evaluating the dischargeability is described in detail below.

[0165] <Evaluation of ejection properties> An evaluation machine was prepared, which was equipped with a mounting table on which the PET film was placed and one recording head (Kyocera Corporation, "KJ4B head") fixedly disposed above the mounting table. The mounting table has the function of transporting the object to be printed by moving horizontally. The recording head was disposed in a position where the distance between the nozzle tip and the PET film was 3 mm. The recording head was set to maintain a temperature of 5°C.

[0166] The ejection properties of the treatment liquid were evaluated by printing a nozzle check pattern on a PET film. Specifically, the recording head was filled with the treatment liquid, and the ejection rate was 10 g / m.2 A nozzle check pattern was printed using a printer and the nozzle check patterns from all nozzles (2656 nozzles) were visually inspected and categorized into nozzles that were not ejecting properly (nozzles that were not ejecting treatment liquid, nozzles that were not ejecting treatment liquid straight, nozzles that were not ejecting treatment liquid evenly, etc.) and other nozzles that were ejecting properly, and then an evaluation was performed. The evaluation criteria are as follows: 〇 (Pass): The total number of nozzles that are not ejecting normally is less than 10 × (Fail): 10 or more nozzles that are not ejecting normally

[0167] The type of treatment liquid (content and type of silicone oil) used in each example and comparative example, the type of ink used in producing the printed textile, and the evaluation results of rub fastness and ejection property are summarized in Table 4 below.

[0168] [Table 4]

[0169] [Consideration] As shown in Table 4 above, for Examples 2-1 to 2-5, which used treatment liquids (C-1) to (C-5) with silicone oil contents ranging from 7% to 15% by mass, the dry and wet rub fastnesses were all rated A or B. In particular, for Examples 2-2 to 2-4, which used treatment liquids (C-2) to (C-4) with silicone oil contents ranging from 10% to 13% by mass, the dry and wet rub fastnesses were all rated A, which was significantly excellent.

[0170] On the other hand, the printed material of Comparative Example 2-1, which used treatment liquid (D-1) with a silicone oil content of 6% by mass, less than 7% by mass, and the printed material of Comparative Example 2-2, which used treatment liquid (D-2) with a silicone oil content of 16% by mass, more than 15% by mass, were both evaluated as C in dry rub fastness and wet rub fastness. In other words, if the silicone oil content of the treatment liquid is within the range of 7% by mass or more and 15% by mass or less, when the discharge amount of the treatment liquid is smaller than in the test described in 1 above, as in this test (specifically, 5.1 g / m 2 ), it was possible to produce printed products that were excellent in both dry and wet rubbing fastness.

[0171] Furthermore, as shown in Table 4, the treatment liquids (C-1) to (C-5) with a silicone oil content in the range of 7% by mass or more and 15% by mass or less had good ejection properties. On the other hand, when the silicone oil content exceeded 15% by mass, such as in the treatment liquid (D-2) with a silicone oil content of 16% by mass, the solid content increased, and ejection properties from the treatment head deteriorated.

[0172] 4. Evaluation test of the rubbing fastness of the printed material when the amount of treatment liquid discharged is changed In this test, using the aforementioned treatment liquid (C-2) (silicone oil content: 10% by mass), printed items were produced while varying the amount of treatment liquid ejected over a wider range, and the rub fastness of the printed items was evaluated in more detail.

[0173] <Method of producing printed items for evaluation in Example 2-2 and Examples 2-6 to 2-9> The evaluation printed textiles of Example 2-2 and Examples 2-6 to 2-9 were prepared in the same manner as the evaluation printed textile preparation method described in 1 above, except for the following changes: The first ink chamber of the first cartridge was filled with the ink shown in Table 5, and the second ink chamber of the second cartridge was filled with treatment liquid (C-2). In each example, the ejection amount of the treatment liquid was set to the ejection amount shown in Table 5 below. The ejection amount of the ink was 20 g / m 2 It was decided.

[0174] <Evaluation of friction fastness> The evaluation printed textiles produced using the treatment liquid (C-2) of Example 2-2 and Examples 2-6 to 2-9 were evaluated using the same method as for evaluating rub fastness as described above in 1. The evaluation results are summarized in Table 5 below, along with details of the treatment liquid used, the amount of treatment liquid ejected per dot (pL / dot), the number of passes of the treatment head until the entire amount was applied to the fabric, the type of ink used to produce the printed textile, and the amount of each treatment liquid ejected.

[0175] [Table 5]

[0176] [Consideration] As shown in Table 5 above, when the treatment liquid (C-2) containing 10 mass % of carboxy-modified silicone oil was used, 2 More than 40g / m 2 For the printed textiles produced with a wide range of discharge amounts (discharge only) of approximately the following, it was possible to produce printed textiles excellent in both dry rub fastness and wet rub fastness. Specifically, for all of the printed textiles of Example 2-2 and Examples 2-6 to 2-9, the dry rub fastness and wet rub fastness were evaluated as A or B. In particular, in the case of this test using a treatment liquid (C-2) containing 10% by mass of carboxy-modified silicone oil, 2 More than 10g / m 2 At the discharge amount of about 1000 to 15000, it was possible to produce printed products that were remarkably excellent in both dry rub fastness and wet rub fastness.

[0177] In addition, since the printed material of Example 2-9 requires four passes, from the viewpoint of improving productivity, the discharge amount of the treatment liquid is set to 5 g / m 2 More than 30g / m 2 It is envisaged that it is preferable that:

[0178] The embodiments and examples disclosed herein should be understood to be illustrative in all respects and not restrictive. The scope of the present disclosure is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims. [Industrial Applicability]

[0179] The inkjet treatment liquid, inkjet textile printing apparatus, and inkjet textile printing method according to the present disclosure can be used to produce printed textiles. [Explanation of symbols]

[0180] 1: Recording head 1a: First recording head 1b: Second recording head 1c: 3rd recording head 1d: 4th recording head 2: Processing head 3: Mounting table 10: Inkjet printing device P: Printing target

Claims

1. A method for producing a silicone oil-containing emulsion comprising: mixing a silicone oil with at least an aqueous medium to emulsify the mixture, thereby obtaining a treatment liquid in which emulsified particles containing the silicone oil are dispersed in the aqueous medium; The method for producing an inkjet treatment liquid, wherein the content of the silicone oil is 7% by mass or more and 15% by mass or less.

2. A set comprising an inkjet treatment liquid and an ink containing a pigment, the inkjet treatment liquid contains emulsion particles containing silicone oil and an aqueous medium; The set, wherein the content of the silicone oil is 7% by mass or more and 15% by mass or less.

3. The set according to claim 2 , wherein the content of the silicone oil is 10% by mass or more and 13% by mass or less.

4. The set according to claim 2 , wherein the silicone oil comprises at least an ionic group-containing silicone oil.

5. The set according to any one of claims 2 to 4, which is for textile printing.

6. A printed product in which an image is formed by ejecting ink from a recording head onto an image forming area of ​​a printing target, and a treatment film is formed by ejecting inkjet treatment liquid from a treatment head, the inkjet treatment liquid contains emulsion particles containing silicone oil and an aqueous medium; The content of the silicone oil is 7% by mass or more and 15% by mass or less.

7. A printed material as described in Claim 6, wherein the content of the silicone oil is 10% by mass or more and 13% by mass or less.

8. A printed material described in claim 6 or 7, wherein the silicone oil contains at least an ionic group-containing silicone oil.

9. a recording head that ejects ink onto an image forming area of ​​a textile printing target, a processing head that ejects a treatment liquid onto at least the image forming area of ​​the textile printing target, and a cartridge filled with the treatment liquid; the treatment liquid is an inkjet treatment liquid containing emulsified particles containing silicone oil and an aqueous medium, The content of the silicone oil is 7% by mass or more and 15% by mass or less.

10. an ink ejection step of ejecting ink from a recording head onto an image formation area of ​​a textile printing target, and a processing step of ejecting a processing liquid from a processing head onto at least the image formation area of ​​the textile printing target, the treatment liquid is an inkjet treatment liquid containing emulsified particles containing silicone oil and an aqueous medium, The inkjet printing method, wherein the content of the silicone oil is 7% by mass or more and 15% by mass or less.

11. The discharge amount of the inkjet treatment liquid is 5 g / m ２ 30g / m or more ２ The ink-jet printing method according to claim 10, wherein:

12. The discharge amount of the inkjet treatment liquid is 5 g / m ２ 10g / m or more ２ The inkjet printing method according to claim 11, wherein:

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