JP2023038516A - Method for treating fabric - Google Patents

Abstract

To provide a method for treating a fabric that makes it possible to form an image with less bleeding.SOLUTION: A method for treating a fabric includes a first treatment liquid attachment step in which a first treatment liquid containing a cationic compound and water is sprayed from a nozzle tip at 180°C or higher and attached onto a fabric, and a second treatment liquid attachment step in which a second treatment liquid containing a pigment, resin particles, water, and organic solvent is attached, by the inkjet technique, onto the fabric having the first treatment liquid attached thereon.SELECTED DRAWING: None

Description

The present invention relates to a method of treating fabrics.

Since the inkjet method can form a high-quality image on a recording medium, various techniques have been developed in the past. For example, not only the development of inkjet recording apparatuses but also the development of inkjet ink compositions and the like used in such apparatuses is active. Furthermore, various studies have been made on combinations of recording apparatuses, inkjet ink compositions, recording media, and the like.

For example, Patent Literature 1 proposes an image forming method in which a coating liquid containing a non-volatile component is sprayed together with a heated gas after forming an image on a recording medium by an inkjet method. The document states that according to such a method, the formed image can be protected by the non-volatile component.

JP 2020-175665 A

The method described in Patent Document 1 is a method of disposing a non-volatile component on an image formed with ink by spraying, and assumes paper as the recording medium. However, in the inkjet method, an image is formed on a fabric, and when the recording medium is a fabric, it is expected that overcoating will improve the print quality more than when the recording medium is paper. Hateful.

In addition, since ink easily permeates fabric, a pretreatment liquid has been conventionally applied to the fabric in advance in order to coagulate the ink in the vicinity of the surface of the fabric and improve color development. In this case, depending on the type of pretreatment liquid and the application conditions, the ink applied later may bleed.

One aspect of the fabric treatment method according to the present invention is
a first treatment liquid applying step of spraying a first treatment liquid containing a cationic compound and water from a nozzle tip opening at 180° C. or higher to adhere it to the fabric;
a second treatment liquid applying step of applying a second treatment liquid containing a pigment, resin particles, water, and an organic solvent to the fabric to which the first treatment liquid has adhered by an inkjet method;
Prepare.

Embodiments of the present invention are described below. The embodiments described below illustrate examples of the invention. The present invention is by no means limited to the following embodiments, and includes various modifications implemented within the scope of the present invention. Note that not all of the configurations described below are essential configurations of the present invention.

As used herein, "(meth)acryl" represents acrylic or methacrylic, and "(meth)acrylate" represents acrylate or methacrylate.

1. Method for treating fabric The method for treating fabric according to the present embodiment includes a first treatment in which a first treatment liquid containing a cationic compound and water is sprayed from a nozzle tip of 180°C or higher to adhere to the fabric. a second treatment liquid application step of applying a second treatment liquid containing a pigment, resin particles, water, and an organic solvent to the fabric to which the first treatment liquid has been applied by an inkjet method; , provided.

1.1. Fabric The fabric to be treated by the treatment method of the present embodiment is not particularly limited. The material constituting the fabric is not particularly limited, and examples include natural fibers such as cotton, hemp, wool, and silk, synthetic fibers such as polypropylene, polyester, acetate, triacetate, polyamide (e.g., nylon (registered trademark)), and polyurethane. Examples include fibers, biodegradable fibers such as polylactic acid, and the like, and blended fibers thereof may also be used. As the fabric, the above-mentioned fibers may be in any form such as woven fabric, knitted fabric, non-woven fabric, etc., or mixed fabric may be used.

In the fabric treatment method of the present embodiment, a more pronounced effect can be obtained when the fabric contains fibers selected from polyester and polyamide. That is, according to the fabric treatment method of the present embodiment, when the fabric contains chemical fibers such as polyester and polyamide and is difficult to expose to high temperatures, an image with particularly good fastness can be formed.

1.2. First Treatment Liquid Adhesion Step In the first treatment liquid adhesion step, a first treatment liquid containing a cationic compound and water is sprayed from the tip of a nozzle at 180° C. or higher and adhered to the fabric.

1.2.1. First Treatment Liquid The first treatment liquid contains at least a cationic compound and water. The first treatment liquid has a function of aggregating dispersed components such as pigments and resin particles in the second treatment liquid, which will be described later. The first treatment liquid is attached to the fabric before the second treatment liquid is attached to the fabric, and thus corresponds to a so-called pretreatment liquid.

1.2.1.1. Cationic Compound The first treatment liquid contains a cationic compound. The cationic compound has the effect of aggregating the resin particles and pigments in the second treatment liquid, and is a factor in obtaining an image of excellent image quality in which bleeding due to the second treatment liquid is reduced.

Cationic compounds act on the dispersibility of dispersing components such as resin particles, pigments, and water-dispersible resins. The degree of agglomeration of the dispersion by the cationic compound is different for each type of cationic compound and target and can be controlled. Such a cohesive action can, for example, suppress image bleeding, enhance color development, and/or enhance image fixability.

Examples of cationic compounds include, but are not limited to, metal salts, acids, cationic organic compounds, etc. Examples of cationic organic compounds include cationic resins (cationic polymers) and cationic surfactants. etc. can be used. Among these, polyvalent metal salts are preferred as metal salts, and cationic resins are preferred as cationic organic compounds. Examples of the acid include organic acids and inorganic acids, with organic acids being preferred.

The metal salt is preferably a polyvalent metal salt, but metal salts other than polyvalent metal salts can also be used. Moreover, a cationic compound can also use multiple types together.

A polyvalent metal salt is a compound composed of a divalent or higher valent metal ion and an anion. Examples of divalent or higher metal ions include ions of calcium, magnesium, copper, nickel, zinc, barium, aluminum, titanium, strontium, chromium, cobalt, and iron. Among the metal ions constituting these polyvalent metal salts, at least one of calcium ions and magnesium ions is preferable from the viewpoint of excellent cohesion of ink components.

Anions constituting the polyvalent metal salt are inorganic ions or organic ions. That is, the polyvalent metal salt in the present invention is composed of inorganic ions or organic ions and polyvalent metals. Examples of such inorganic ions include chloride ions, bromide ions, iodine ions, nitrate ions, sulfate ions, and hydroxide ions. Examples of organic ions include organic acid ions, such as carboxylate ions.

The polyvalent metal compound is preferably an ionic polyvalent metal salt, and in particular, when the polyvalent metal salt is magnesium salt or calcium salt, the stability of the treatment liquid is improved. Also, the counter ion of the polyvalent metal may be either an inorganic acid ion or an organic acid ion.

Specific examples of the above polyvalent metal salts include calcium carbonate such as heavy calcium carbonate and light calcium carbonate, calcium nitrate, calcium chloride, calcium sulfate, magnesium sulfate, calcium hydroxide, magnesium chloride, magnesium carbonate, barium sulfate, chloride Barium, zinc carbonate, zinc sulfide, aluminum silicate, calcium silicate, magnesium silicate, copper nitrate, calcium acetate, magnesium acetate, aluminum acetate, calcium propionate, magnesium propionate, aluminum propionate, calcium lactate, magnesium lactate, aluminum lactate, etc. is mentioned. These polyvalent metal salts may be used singly or in combination of two or more. Among these, at least one of magnesium sulfate, calcium nitrate, aluminum lactate, and calcium propionate is preferable in terms of obtaining sufficient solubility in water. In addition, these metal salts may have water of hydration in the raw material form.

Metal salts other than polyvalent metal salts include monovalent metal salts such as sodium salts and potassium salts, such as sodium sulfate and potassium sulfate.

Examples of organic acids include poly(meth)acrylic acid, formic acid, acetic acid, propionic acid, glycolic acid, oxalic acid, malonic acid, malic acid, maleic acid, ascorbic acid, succinic acid, glutaric acid, adipic acid, and fumaric acid. , citric acid, tartaric acid, lactic acid, pyruvic acid, pyrrolidonecarboxylic acid, pyrronecarboxylic acid, pyrrolecarboxylic acid, furancarboxylic acid, pyridinecarboxylic acid, coumaric acid, thiophenecarboxylic acid, nicotinic acid, or derivatives of these compounds, or these Salts of and the like are preferably exemplified. An organic acid may be used individually by 1 type, and may use 2 or more types together. Salts of organic acids that are metal salts are included in the above metal salts.

Inorganic acids include sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid and the like. An inorganic acid may be used individually by 1 type, and may use 2 or more types together.

Examples of cationic resins (cationic polymers) include cationic urethane-based resins, cationic olefin-based resins, cationic amine-based resins, and cationic surfactants.

As the cationic urethane resin, commercially available products can be used, for example, Hydran CP-7010, CP-7020, CP-7030, CP-7040, CP-7050, CP-7060, CP-7610 (trade name , manufactured by Dainippon Ink and Chemicals Co., Ltd.), Superflex 600, 610, 620, 630, 640, 650 (trade name, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), urethane emulsion WBR-2120C, WBR-2122C (trade name, manufactured by Taisei Fine Chemical Co., Ltd.) and the like can be used.

The cationic olefin resin has an olefin such as ethylene, propylene, or the like in its structural skeleton, and known resins can be appropriately selected and used. Moreover, the cationic olefin resin may be in an emulsion state dispersed in a solvent containing water, an organic solvent, or the like. As the cationic olefin resin, commercially available products can be used, such as Arrowbase CB-1200 and CD-1200 (trade names, manufactured by Unitika Ltd.).

As the cationic amine-based resin (cationic polymer), any one having an amino group in the structure can be used, and known ones can be appropriately selected and used. Examples include polyamine resins, polyamide resins, polyallylamine resins, and the like. A polyamine resin is a resin having an amino group in the main skeleton of the resin. A polyamide resin is a resin having an amide group in the main skeleton of the resin. A polyallylamine resin is a resin having a structure derived from an allyl group in the main skeleton of the resin.

In addition, as a cationic polyamine resin, Senka Co., Ltd. Unisense KHE103L (hexamethylenediamine / epichlorohydrin resin, 1% aqueous solution pH about 5.0, viscosity 20 to 50 (mPa s), solid content concentration 50 mass% aqueous solution), Unisense KHE104L (dimethylamine/epichlorohydrin resin, 1% aqueous solution pH of about 7.0, viscosity 1 to 10 (mPa s), solid content concentration 20% by mass aqueous solution). . Further, specific examples of commercially available cationic polyamine resins include FL-14 (manufactured by SNF), Arafix 100, 251S, 255, 255LOX (manufactured by Arakawa Chemical), DK-6810, 6853, 6885; -4010, 4011, 4020, 4024, 4027, 4030 (manufactured by Seiko PMC), Papiogen P-105 (manufactured by Senka), Sumirezu Resin 650 (30), 675A, 6615, SLX-1 (manufactured by Taoka Chemical Co., Ltd.) ), Catiomaster (registered trademark) PD-1, 7, 30, A, PDT-2, PE-10, PE-30, DT-EH, EPA-SK01, TMHMDA-E (manufactured by Yokkaichi Gosei Co., Ltd.), Jetfix 36N, 38A and 5052 (manufactured by Satoda Kako Co., Ltd.).

Polyallylamine resins include, for example, polyallylamine hydrochloride, polyallylamine amide sulfate, allylamine hydrochloride/diallylamine hydrochloride copolymer, allylamine acetate/diallylamine acetate copolymer, allylamine acetate/diallylamine acetate copolymer, allylamine hydrochloride/dimethyl allylamine hydrochloride copolymer, allylamine-dimethylallylamine copolymer, polydiallylamine hydrochloride, polymethyldiallylamine hydrochloride, polymethyldiallylamine amide sulfate, polymethyldiallylamine acetate, polydiallyldimethylammonium chloride, diallylamine acetate-sulfur dioxide copolymer, diallyl methylethylammonium ethylsulfate/sulfur dioxide copolymer, methyldiallylamine hydrochloride/sulfur dioxide copolymer, diallyldimethylammonium chloride/sulfur dioxide copolymer, diallyldimethylammonium chloride/acrylamide copolymer and the like.

Cationic surfactants include, for example, primary, secondary, and tertiary amine salt type compounds, alkylamine salts, dialkylamine salts, aliphatic amine salts, benzalkonium salts, quaternary ammonium salts. , quaternary alkylammonium salts, alkylpyridinium salts, sulfonium salts, phosphonium salts, onium salts, imidazolinium salts and the like. Specifically, for example, hydrochlorides and acetates of laurylamine, coconut amine, rosinamine, etc., lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, benzyltributylammonium chloride, benzalkonium chloride, dimethylethyllaurylammonium ethyl sulfate, Dimethylethyloctylammonium ethyl sulfate, trimethyllaurylammonium hydrochloride, cetylpyridinium chloride, cetylpyridinium bromide, dihydroxyethyllaurylamine, decyldimethylbenzylammonium chloride, dodecyldimethylbenzylammonium chloride, tetradecyldimethylammonium chloride, hexadecyldimethylammonium chloride , octadecyldimethylammonium chloride and the like. The cationic surfactant functions as a cationic compound to be described later, and may be contained in the inkjet ink composition. However, the cationic surfactant is more preferably contained as a cationic compound in the treatment liquid.

These cationic compounds may be used in combination. Among these cationic compounds, if at least one of polyvalent metal salts, organic acids and cationic resins is selected, the aggregating action will be better, resulting in higher image quality (particularly better suppression of bleeding). An image can be formed.

The total content of the cationic compounds in the first treatment liquid is, for example, 0.1% by mass or more and 20% by mass or less, and 0.5% by mass or more and 10.5% by mass or more. It is preferably 0% by mass or less, and more preferably 2% by mass or more and 15% by mass or less. When the content of the cationic compound is within this range, it is possible to obtain better color developability and better fastness of the image formed by the second treatment liquid. Moreover, when the content of the cationic compound is 1% by mass or more, the ability of the cationic compound to agglomerate the components contained in the second treatment liquid is sufficiently obtained. In addition, when the content of the cationic compound is 30% by mass or less, the solubility and dispersibility of the cationic compound in the first treatment liquid are improved, and the storage stability and the like of the first treatment liquid are improved. can improve.

1.2.1.2. Water The first treatment liquid contains water. The first treatment liquid is an aqueous composition containing water. Aqueous systems are compositions that contain water as one of the primary solvent components. Water may be included as a major solvent component and is a component that evaporates upon drying. The water is preferably pure water such as ion-exchanged water, ultrafiltrated water, reverse osmosis water, distilled water, or ultrapure water from which ionic impurities are removed as much as possible. In addition, it is preferable to use water sterilized by ultraviolet irradiation or addition of hydrogen peroxide, because the generation of mold and bacteria can be suppressed when the treatment liquid and the inkjet ink composition are stored for a long period of time. The water content is preferably 40% by mass or more, further preferably 45% by mass or more, more preferably 50% by mass or more and 98% by mass or less, and still more preferably 55% by mass or more, relative to the total amount of the first treatment liquid. It is more than mass % and below 95 mass %.

1.2.1.3. Other Substances In addition to the components described above, the first treatment liquid may contain at least one selected from reactive compounds, organic solvents, surfactants, and other substances.

(1) Reactive compound The first treatment liquid may contain a reactive compound. As the reactive compound, a compound having crosslinkability is preferable, and for example, a compound that forms a crosslinked structure by reacting with a plurality of compounds by heating is preferable.

Typical examples of crosslinkable reactive compounds include compounds having multiple isocyanate groups (-N=C=O) (also referred to as isocyanato groups), such as diisocyanates, triisocyanates, and polyisocyanates.

Examples of diisocyanates include aliphatic diisocyanates, alicyclic diisocyanates, aromatic diisocyanates, and araliphatic diisocyanates. These diisocyanates may be used alone or in combination of two or more.

Aliphatic diisocyanates include tetramethylene diisocyanate, dodecamethylene diisocyanate, 1,5-pentamethylene diisocyanate, hexamethylene diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, 2,4,4-trimethylhexamethylene diisocyanate, and lysine diisocyanate. , 2-methylpentane-1,5-diisocyanate, 3-methylpentane-1,5-diisocyanate, and the like.

Alicyclic diisocyanates include isophorone diisocyanate, hydrogenated xylylene diisocyanate, dicyclohexylmethane diisocyanate, 1,4-cyclohexane diisocyanate, methylcyclohexylene diisocyanate, 1,3-bis(isocyanatomethyl)cyclohexane and the like.

Examples of aromatic diisocyanates include tolylene diisocyanate, 2,2′-diphenylmethane diisocyanate, 2,4′-diphenylmethane diisocyanate, 4,4′-diphenylmethane diisocyanate (MDI), 4,4′-dibenzyl diisocyanate, 1,5- naphthylene diisocyanate, 1,3-phenylene diisocyanate, 1,4-phenylene diisocyanate and the like.

The araliphatic diisocyanate includes xylylene diisocyanate, dialkyldiphenylmethane diisocyanate, tetraalkyldiphenylmethane diisocyanate, α,α,α,α-tetramethylxylylene diisocyanate and the like.

A diisocyanate can be used individually by 1 type or in combination of 2 or more types.

The diisocyanate is preferably an aliphatic diisocyanate or an alicyclic diisocyanate in that discoloration of the resin can be suppressed. , 3-bis(isocyanatomethyl)cyclohexane is more preferred.

Further, the crosslinkable reactive compound is more preferably a blocked isocyanate group in which the isocyanate group is blocked (masked) with a blocking agent so that the isocyanate group is less likely to react in the first treatment liquid. When such a compound having a blocked isocyanate group is used, the reaction of the isocyanate group is suppressed even when the first treatment liquid is stored for a long period of time, and the storage stability is improved.

The blocking agent is dissociated from the isocyanate group by being heated to a predetermined temperature or higher. That is, the reactivity of the isocyanate group is released by heating after the first treatment liquid containing the reactive compound is adhered to the fabric. The liberated isocyanate groups react with hydroxyl groups to form urethane bonds, react with water and multiple isocyanates to form urea bonds, and react with urea bonds and isocyanate groups to form biuret bonds. forming an allophanate bond by reacting a urethane bond with an isocyanate group; forming a uretdione bond by dimerizing the isocyanate group; and forming an isocyanurate bond by trimerizing the isocyanate group. can form a bond of These bonds can be positively generated or not generated depending on the reaction temperature or the like.

The blocking agent preferably dissociates at about 60° C. or higher and 180° C. or lower in order to maintain good ejection stability of the first treatment liquid. In this embodiment, the temperature of the nozzle tip is 180° C. or higher, but the path of the first treatment liquid from the storage container or the like to the nozzle tip is designed not to be heated, and is blocked near the nozzle tip. Agents can be set to dissociate.

Specific examples of blocking agents include alcohols, alkylphenols, phenols, active methylene compounds, mercaptans, acid amides, acid imides, imidazoles, urea compounds, oximes, amines, imides, pyrazoles, methyl ethyl ketoxime, and caprolactam. and the like.

Commercially available blocked isocyanates include, but are not limited to, the following various products. Meisei Chemical Industry Co., Ltd. DM-6400 [MDI block body, aqueous dispersion, solid content concentration: 43%], SU-268A [HDI block body, aqueous emulsion, solid content concentration: 30%, anionic ], NBP-873D [HDI block, water-based emulsion], NBP-211 [HDI block, water-based emulsion], DM-3031CONC [MDI block, water-based dispersion] of the trade name Meikanate series , DM-350Z [MDI blocked body, aqueous dispersion], TP-10 [TDI blocked body, aqueous emulsion, solid content concentration: 44%, nonionic], CX [HDI blocked body, aqueous emulsion, cationic]. Baxenden Aqua BI200 [blocked HDI trimer, aqueous, solid concentration: 40%], Aqua BI220 [blocked HDI trimer, aqueous, solid concentration 40%], 7950 [IPDI block 7951 [blocked form of IPDI trimer, organic solvent solution, solid content concentration: 65%], 7960 [blocked form of HDI biuret, organic solvent solution, solid content: 65%], concentration: 70%], 7961 [blocked HDI biuret, organic solvent solution, solids concentration: 70%], 7982 [blocked HDI trimer, organic solvent solution, solids concentration: 70%], 7990 [Blocked body of IPDI trimer, organic solvent solution, solid content concentration: 65%], 7991 [Blocked body of HDI biuret, organic solvent solution, solid content concentration: 70%], 7992 [Blocked body of HDI trimer, Organic solvent solution, solid content concentration: 70%]. Of the Barnock (registered trademark) series manufactured by DIC Corporation, D-500 [TDI block, organic solvent solution, solid content concentration: 64 to 66%], D-550 [HDI block, organic solvent solution, solid concentration: 54-56%]. Of the Takenate (registered trademark) series manufactured by Mitsui Chemicals, Inc. B-830 [TDI-blocked], B-815N [4,4-methylenebis(cyclohexyl isocyanate)-blocked], B-842N [1,3- bis(isocyanatomethyl)cyclohexane blocked], B-846N [1,3-bis(isocyanatomethyl)cyclohexane blocked], B-874N [IPDI blocked], B-882N [HDI blocked]. MF-B60X [HDI-blocked product], MF-K60X [HDI-blocked product], SBN-70D [HDI-blocked product] of the Duranate (registered trademark) series manufactured by Asahi Kasei Corporation. F2462D1 [MDI block, nonionic] manufactured by Daiichi Kogyo Seiyaku Co., Ltd., BN-11 [HDI block, aqueous emulsion, nonionic] in Elastron (registered trademark) series, BN-P17 [MDI block powder], BN-77 [MDI blocked product, aqueous emulsion, anionic], BN-04, BN-08, BN-44, BN-45 [above, urethane-modified polyvalent isocyanate block product 3 to 5 functional groups per molecule].

One or more of these blocked isocyanates can be used.

By containing the reactive compound in the first treatment liquid, the wash fastness of the image obtained with the second treatment liquid can be improved. In the method for treating the fabric of the present embodiment, bleeding is reduced by the presence of the second treatment liquid near the surface of the fabric, but the fastness tends to deteriorate in some cases. On the other hand, by containing a reactive compound in the first treatment liquid, it is possible to improve fastness. In addition, when spraying with a two-fluid nozzle, it can be attached to the fabric in a short time, so the reactivity (crosslinking property) of the reactive compound is less likely to be deactivated during spraying, and the fastness is improved. can be done.

In addition, since the first treatment liquid contains a reactive compound, it is possible to improve wet rubbing fastness comparable to overcoat treatment (post-treatment). The reaction of the reactive compound can enhance the adhesion between the second treatment liquid and the fabric. Therefore, it is possible to exhibit washing fastness that is difficult to obtain by overcoating.

(2) Organic Solvent The first treatment liquid may contain an organic solvent. The first treatment liquid used in the fabric treatment method according to this embodiment may contain an organic solvent. The organic solvent preferably has water solubility. One of the functions of the organic solvent is to improve the wettability of the first treatment liquid to the fabric and to improve the moisture retention of the first treatment liquid. Organic solvents can also function as penetrants.

Examples of organic solvents include esters, alkylene glycol ethers, cyclic esters, nitrogen-containing solvents, and polyhydric alcohols. Examples of nitrogen-containing solvents include cyclic amides and non-cyclic amides. Examples of non-cyclic amides include alkoxyalkylamides.

Esters include ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, diethylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate,
Glycol monoacetates such as propylene glycol monomethyl ether acetate, dipropylene glycol monomethyl ether acetate, methoxybutyl acetate, ethylene glycol diacetate, diethylene glycol diacetate, propylene glycol diacetate, dipropylene glycol diacetate, ethylene glycol acetate propionate , ethylene glycol acetate butyrate, diethylene glycol acetate butyrate, diethylene glycol acetate propionate, diethylene glycol acetate butyrate, propylene glycol acetate propionate, propylene glycol acetate butyrate, dipropylene glycol acetate butyrate, dipropylene glycol acetate propionate and glycol diesters such as

Alkylene glycol ethers may be monoethers or diethers of alkylene glycol, and alkyl ethers are preferred. Specific examples include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monoisopropyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol. monoethyl ether, triethylene glycol monobutyl ether, tetraethylene glycol monomethyl ether, tetraethylene glycol monoethyl ether, tetraethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether , dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, tripropylene glycol monobutyl ether and other alkylene glycol monoalkyl ethers, and ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dibutyl ether, diethylene glycol methyl ethyl ether, diethylene glycol methyl butyl ether, triethylene glycol dimethyl ether, triethylene glycol diethyl ether, triethylene glycol dibutyl ether, triethylene glycol methyl butyl ether, alkylene glycol dialkyl ethers such as tetraethylene glycol dimethyl ether, tetraethylene glycol diethyl ether, tetraethylene glycol dibutyl ether, propylene glycol dimethyl ether, propylene glycol diethyl ether, dipropylene glycol dimethyl ether, dipropylene glycol diethyl ether, tripropylene glycol dimethyl ether; be done.

Among the above alkylene glycols, diethers tend to dissolve or swell the resin particles in the ink more easily than monoethers, and are more preferable from the viewpoint of improving the abrasion resistance of the formed image.

Cyclic esters include β-propiolactone, γ-butyrolactone, δ-valerolactone, ε-caprolactone, β-butyrolactone, β-valerolactone, γ-valerolactone, β-hexanolactone, γ-hexanolactone , δ-hexanolactone, β-heptanolactone, γ-heptanolactone, δ-heptanolactone, ε-heptanolactone, γ-octanolactone, δ-octanolactone, ε-octanolactone, δ - Cyclic esters (lactones) such as nonalactone, ε-nonalactone, ε-decanolactone, and compounds in which the hydrogen of the methylene group adjacent to the carbonyl group thereof is substituted with an alkyl group having 1 to 4 carbon atoms. can be done.

Alkoxyalkylamides include, for example, 3-methoxy-N,N-dimethylpropionamide, 3-methoxy-N,N-diethylpropionamide, 3-methoxy-N,N-methylethylpropionamide, 3-ethoxy- N,N-dimethylpropionamide, 3-ethoxy-N,N-diethylpropionamide, 3-ethoxy-N,N-methylethylpropionamide, 3-n-butoxy-N,N-dimethylpropionamide, 3-n -butoxy-N,N-diethylpropionamide, 3-n-butoxy-N,N-methylethylpropionamide, 3-n-propoxy-N,N-dimethylpropionamide, 3-n-propoxy-N,N- Diethylpropionamide, 3-n-propoxy-N,N-methylethylpropionamide, 3-iso-propoxy-N,N-dimethylpropionamide, 3-iso-propoxy-N,N-diethylpropionamide, 3-iso -propoxy-N,N-methylethylpropionamide, 3-tert-butoxy-N,N-dimethylpropionamide, 3-tert-butoxy-N,N-diethylpropionamide, 3-tert-butoxy-N,N- Methylethylpropionamide, etc. can be exemplified.

Cyclic amides include lactams such as 2-pyrrolidone, 1-methyl-2-pyrrolidone, 1-ethyl-2-pyrrolidone, 1-propyl-2-pyrrolidone, 1-butyl-2-pyrrolidone, and pyrrolidones such as These are preferable from the viewpoint of promoting the solubility of the cationic compound and film-forming of the resin particles, which will be described later, and 2-pyrrolidone is particularly preferable.

Moreover, it is also preferable to use the compound represented by the following general formula (1) as alkoxyalkylamides.

R ¹ —O—CH ₂ CH ₂ —(C═O)—NR ² R ³ (1)

In formula (1) above, R ¹ represents an alkyl group having 1 to 4 carbon atoms, and R ² and R ³ each independently represents a methyl group or an ethyl group. "Alkyl group having 1 to 4 carbon atoms" can be a linear or branched alkyl group, such as methyl group, ethyl group, n-propyl group, iso-propyl group, n-butyl group , sec-butyl, iso-butyl, tert-butyl. The compounds represented by formula (1) may be used singly or in combination of two or more.

The function of the compound represented by formula (1) is, for example, to improve the surface drying property and fixability of the first treatment liquid deposited on the recording medium.

Moreover, in the above formula (1), R ¹ is more preferably a methyl group having 1 carbon atom. In the above formula (1), the normal boiling point of the compound in which R ¹ is a methyl group is lower than the normal boiling point of the compound in which R ¹ is an alkyl group having 2 or more and 4 or less carbon atoms. Therefore, in the above formula (1), the use of a compound in which R ¹ is a methyl group can further improve the surface drying property of the adhesion area (especially the surface drying property of an image recorded in a hot and humid environment). There is

The content when using the compound represented by the above formula (1) is not particularly limited to the total mass of the first treatment liquid, but is about 5% by mass or more and 50% by mass or less, and 8% by mass or more. It is preferably 48% by mass or less. When the content of the compound represented by the above formula (1) is within the above range, the fixing property and surface drying property of the image (especially the surface drying property when recording is performed in a hot and humid environment) can be further improved. There is

Polyhydric alcohols include 1,2-alkanediol (e.g., ethylene glycol, propylene glycol (also known as propane-1,2-diol), 1,2-butanediol, 1,2-pentanediol, 1,2- alkanediols such as hexanediol, 1,2-heptanediol, and 1,2-octanediol), polyhydric alcohols other than 1,2-alkanediols (polyols) (e.g., diethylene glycol, dipropylene glycol, triethylene glycol , 1,3-propanediol, 1,3-butanediol (alias: 1,3-butylene glycol), 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 2-ethyl- 2-methyl-1,3-propanediol, 2-methyl-2-propyl-1,3-propanediol, 2-methyl-1,3-propanediol, 2,2-dimethyl-1,3-propanediol, 3-methyl-1,3-butanediol, 2-ethyl-1,3-hexanediol, 3-methyl-1,5-pentanediol, 2-methylpentane-2,4-diol, trimethylolpropane, glycerin, etc. ) and the like.

Polyhydric alcohols can be divided into alkanediols and polyols. Alkanediols are diols of alkanes having 5 or more carbon atoms. The alkane preferably has 5 to 15 carbon atoms, more preferably 6 to 10 carbon atoms, and still more preferably 6 to 8 carbon atoms. 1,2-alkanediols are preferred.

Polyols are polyols of alkanes having 4 or less carbon atoms or intermolecular condensates of hydroxyl groups of polyols of alkanes having 4 or less carbon atoms. The alkane preferably has 2 to 3 carbon atoms. The number of hydroxyl groups in the molecule of the polyol is 2 or more, preferably 5 or less, more preferably 3 or less. When the polyols are the above intermolecular condensation products, the number of intermolecular condensations is 2 or more, preferably 4 or less, and more preferably 3 or less. Polyhydric alcohols can be used singly or in combination of two or more.

Alkanediols and polyols can function primarily as penetrating and/or moisturizing solvents. However, alkanediols tend to have strong properties as penetrating solvents, and polyols tend to have strong properties as moisturizing solvents.

When the first treatment liquid contains an organic solvent, one type of organic solvent may be used alone, or two or more types may be used in combination. Further, the total content of the organic solvent with respect to the total mass of the first treatment liquid is, for example, 5% by mass or more and 50% by mass or less, preferably 10% by mass or more and 45% by mass or less, and 15% by mass or more and 40% by mass. The following are more preferable, and 20% by mass or more and 40% by mass or less are even more preferable. When the content of the organic solvent is within the above range, the balance between wet spreadability and drying property is further improved, and high quality images can be easily formed.

Further, when the first treatment liquid contains an organic solvent, it more preferably contains an organic solvent having an SP value of 9.0 or more and 12.0 or less, and an organic solvent having an SP value of 9.0 or more and 12.0 or less. It is also preferred to contain only solvent. If the organic solvent is selected in this manner, the wettability of the first treatment liquid to the fabric is improved, so that the first treatment liquid can be uniformly applied even with a relatively small amount. Further, since the first treatment liquid is sprayed from the heated nozzle, the volatile components are reduced before the first treatment liquid reaches the fabric. Even in such a state, sufficiently good wettability can be ensured.

Here, the solubility parameter (SP value) will be explained. The SP value in the present invention is the SP value based on the Hansen method. According to the Hansen method, the SP value δ is classified into three terms and calculated by expressing δ ² =δd ² +δp ² +δh ² . δd, δp, and δh are solubility parameters corresponding to a dispersion force term, a dipole force term, and a hydrogen bond force term, respectively.

In addition, the unit of the SP value is (cal/cm ³ ) ^1/2 , and the SP value is based on the idea that "two substances with similar intermolecular interactions are likely to dissolve in each other." This is the value proposed by Ori Hansen (also called HSP). In addition to being able to be estimated by calculation, it can also be determined experimentally and empirically, and many of the values are described in various documents. In this embodiment, as the SP value, a value derived using Hansen-Solubility HSPiP, which is calculation software, can be used.

The following are non-limiting examples of some organic solvents and their SP values based on the Hansen method. Methanol (SP value: 14.84), ethanol (SP value: 11.8), 2-propanol (SP value: 12.7), n-propyl alcohol (SP value: 11.8), 1,3-butane Diol (SP value: 14.47), 1,2-hexanediol (SP value: 12.2), butoxypropanol (SP value: 8.9), dipropylene glycol (SP value: 12.9), triethylene Glycol (SP value: 13.8), 2-ethyl-1,3-hexanediol (SP value: 11.6), tetraethylene glycol (SP value: 12.6), glycerin (SP value: 16.5) , hexane (SP value: 7.45), cyclohexane (SP value: 8.40), 3,5,5-trimethyl-2-cyclohexen-1-one (SP value: 8.87), xylene (SP value: 8.95), ethylbenzene (SP value: 8.93), γ-butyrolactone (SP value: 14.8), 2-pyrrolidone (γ-butyrolactam) (SP value: 14.2), butyl acetate (SP value: 8.70), ethyl octanoate (SP value: 8.3), 3-methoxybutyl acetate (SP value: 8.71), oleic acid (SP value: 8.69), dodecyl acrylate (SP value: 8 .63), diethyl ether (SP value: 7.82), ethyl propyl ether (SP value: 8.8), ethylene glycol monomethyl ether (SP value: 11.4), ethylene glycol monoisopropyl ether (SP value: 9 .2), ethylene glycol monobutyl ether (SP value: 9.8), diethylene glycol monomethyl ether (SP value: 10.7), diethylene glycol monobutyl ether (SP value: 9.5), diethylene glycol monoisobutyl ether (SP value: 8 .7), diethylene glycol dimethyl ether (SP value: 9.4), diethylene glycol ethyl methyl ether (SP value: 8.3), diethylene glycol diethyl ether (SP value: 8.1), diethylene glycol isopropyl methyl ether (SP value: 7. 9), diethylene glycol butyl methyl ether (SP value: 8.1), diethylene glycol dibutyl ether (SP value: 7.7), propylene glycol monomethyl ether (SP value: 10.4), propylene glycol n-propyl ether (SP value 9.8), propylene glycol n-butyl ether (SP value: 9.7), propylene glycol monophenyl ether (SP value: 9.4), dipropylene glycol monomethyl ether (SP value: 9.6), dipropylene glycol monoethyl ether (SP value: 10.9), dipropylene glycol n-propyl ether (SP value: 9.5), dipropylene glycol n-butyl ether (SP value: 9.4), dipropylene glycol dimethyl ether (SP value: 7.88), triethylene glycol monomethyl ether (SP value: 10.5), triethylene glycol Monobutyl ether (SP value: 10.0), triethylene glycol dimethyl ether (SP value: 8.7), triethylene glycol butyl methyl ether (SP value: 8.0), tripropylene glycol monomethyl ether (SP value: 9. 1), tripropylene glycol n-butyl ether (SP value: 9.3), tripropylene glycol dimethyl ether (SP value: 7.4), tetraethylene glycol dimethyl ether (SP value: 8.7), ethylene glycol monomethyl ether acetate ( SP value: 8.96), ethylene glycol monoethyl ether acetate (SP value: 8.91), ethylene glycol monobutyl ether acetate (SP value: 8.85), diethylene glycol monobutyl ether acetate (SP value: 8.94), Dipropylene glycol monomethyl ether acetate (SP value: 8.6).

(3) Surfactant The first treatment liquid may contain a surfactant. The surfactant has the function of reducing the surface tension of the first treatment liquid and improving the wettability with the fabric. Among surfactants, for example, acetylene glycol-based surfactants, silicone-based surfactants, and fluorine-based surfactants can be preferably used.

The acetylene glycol surfactant is not particularly limited, but for example, Surfynol 104, 104E, 104H, 104A, 104BC, 104DPM, 104PA, 104PG-50, 104S, 420, 440, 465, 485, SE, SE- F, 504, 61, DF37, CT111, CT121, CT131, CT136, TG, GA, DF110D (all trade names, manufactured by Air Products & Chemicals), Olphine B, Y, P, A, STG, SPC, E1004 , E1010, PD-001, PD-002W, PD-003, PD-004, EXP. 4001, EXP. 4036, EXP. 4051, AF-103, AF-104, AK-02, SK-14, AE-3 (all trade names, manufactured by Nissin Chemical Industry Co., Ltd.), Acetylenol E00, E00P, E40, E100 (all trade names, river (manufactured by Ken Fine Chemical Co., Ltd.).

The silicone-based surfactant is not particularly limited, but preferably includes a polysiloxane-based compound. Examples of the polysiloxane-based compound include, but are not particularly limited to, polyether-modified organosiloxane. Examples of commercial products of the polyether-modified organosiloxane include BYK-306, BYK-307, BYK-333, BYK-341, BYK-345, BYK-346, and BYK-348 (trade names of BYK-Chemie Japan). ), KF-351A, KF-352A, KF-353, KF-354L, KF-355A, KF-615A, KF-945, KF-640, KF-642, KF-643, KF-6020, X-22 -4515, KF-6011, KF-6012, KF-6015, KF-6017 (the above trade names, manufactured by Shin-Etsu Chemical Co., Ltd.), Silface SAG002, 005, 503A, 008 (the above trade names, Nissin Chemical Industry Co., Ltd. made) and the like.

As the fluorine-based surfactant, it is preferable to use a fluorine-modified polymer. Specific examples include BYK-3440 (manufactured by BYK-Chemie Japan), Surflon S-241, S-242, and S-243 (trade names, (manufactured by AGC Seimi Chemical Co., Ltd.), Futergent 215M (manufactured by Neos Co., Ltd.), and the like.

When a surfactant is contained in the first treatment liquid, a plurality of surfactants may be contained. When the first treatment liquid contains the surfactant, the content thereof is 0.1% by mass or more and 2% by mass or less, preferably 0.4% by mass or more and 1.5% by mass, relative to the total mass of the first treatment liquid. % by mass or less, more preferably 0.5% by mass or more and 1.0% by mass or less.

Among these, the first treatment liquid more preferably contains an acetylene glycol-based surfactant. In this case, an acetylene glycol-based surfactant having an HLB value of 10 or more and 16 or less may be selected and contained. More preferred.

The HLB value in this specification is defined below. "HLB value (hydrophilic lipophilic balance)" is a value calculated by the Griffin method. Specifically, the HLB value of the surfactant can be calculated according to the following formula (H).
HLB value = 20 x (% by mass of hydrophilic group) (H)

The HLB value is a value determined from the balance between the hydrophilic group and the lipophilic group of the surfactant molecule. A high HLB value indicates a highly hydrophilic surfactant, and a low HLB value indicates a lipophilic property. qualitatively show that it is a high surfactant.

When the first treatment liquid contains such an acetylene glycol-based surfactant having an HLB value of 10 or more and 16 or less, the wettability of the first treatment liquid to the fabric can be further increased, so that the first treatment liquid can be applied more uniformly. be able to.

(4) Other Substances The first treatment liquid may further contain components such as antiseptic/antifungal agents, antirust agents, chelating agents, viscosity modifiers, antioxidants, and antifungal agents, if necessary. may

1.2.2. Nozzle In the fabric treatment method according to the present embodiment, the first treatment liquid application step is carried out by spraying the above-described first treatment liquid from a nozzle tip opening at 180° C. or higher to adhere it to the fabric. The nozzle tip opening corresponds to the position of the boundary between the inside and the outside of the nozzle hole, and corresponds to the position where the inner wall that defines the shape of the ejected first treatment liquid ends.

The temperature of the nozzle tip port can be measured, for example, by a thermocouple or thermography. The temperature of the nozzle tip port is more preferably 185° C. or higher, more preferably 190° C. or higher. The upper limit of the temperature of the nozzle tip port is not limited as long as the first treatment liquid can be sprayed.

Examples of nozzles for injecting the first treatment liquid include spray nozzles, types used for spraying atomizers, etc., types used for carburetors using the venturi effect, and both liquid and gas. A jetting two-fluid nozzle or the like can be exemplified.

Among these, when the type used for spraying liquid only is employed, it is preferable to use a nozzle tip opening at a temperature of 180° C. or higher by heating the nozzle tip opening with a heater or the like. Moreover, when adopting the type that injects both liquid and gas, it is preferable to heat the gas so that the temperature of the nozzle tip port is 180° C. or higher. In this way, the liquid (first treatment liquid) is less likely to be heated inside the nozzle, and the storage stability of the first treatment liquid is improved. Reaction of the reactive compound inside can be suppressed.

Furthermore, it is more preferable to use a two-fluid nozzle in the step of applying the first treatment liquid. By spraying the first treatment liquid using a two-fluid nozzle, the droplet size can be made smaller, and volatilization of volatile components such as water and organic solvents (especially volatilization until they adhere to the fabric) is promoted. be done. As a result, when the first treatment liquid adheres to the fabric, the penetration of the first treatment liquid into the interior of the fabric is more easily suppressed, and the first treatment liquid is more likely to stay near the surface of the fabric. can be good.

In addition, by using a two-fluid nozzle, the first treatment liquid is also heated by the heated gas during spraying after exiting the nozzle tip opening, so that the high temperature state can be maintained for a longer time. can be done. Since the volatile components contained in the first treatment liquid are more volatilized due to the long time of the high temperature state, it is possible to further suppress the permeation of the first treatment liquid into the interior of the fabric. Moreover, by using a two-fluid nozzle, the first treatment liquid can be sprayed at a higher pressure, and can be attached to the fabric in a shorter time.

1.2.3. Others The surface temperature of the fabric in the step of applying the first treatment liquid is not particularly limited, but is preferably 100°C or higher and 150°C or lower. In the fabric treatment method of the present embodiment, the fabric is also heated by the adherence of the heated first treatment liquid. Therefore, the heating of the fabric by a platen heater or the like can be omitted or weakened, and the energy required for the treatment can be reduced.

1.3. Second Treatment Liquid Application Process The fabric treatment method according to the present embodiment includes a second treatment liquid application process. In the second treatment liquid application step, a second treatment liquid containing a pigment, resin particles, water, and an organic solvent is applied to the fabric to which the first treatment liquid has adhered by an inkjet method.

1.3.1. Second Treatment Liquid The second treatment liquid contains at least a pigment, resin particles, water, and an organic solvent. The second treatment liquid contains pigments and resin particles which are aggregated by the cationic compound in the first treatment liquid, and has the function of forming an image on the fabric with the pigments. The second treatment liquid corresponds to an inkjet ink composition.

1.3.1.1. Pigment The second treatment liquid contains a pigment. The pigment may be either a white pigment or a non-white pigment, and may be contained in combination of multiple types.

Examples of white pigments include metal compounds such as metal oxides, barium sulfate, and calcium carbonate. Examples of metal oxides include titanium dioxide, zinc oxide, silica, alumina, and magnesium oxide. Particles having a hollow structure may be used as the white pigment, and known particles can be used as the particles having a hollow structure.

Among these, more preferable white pigments include titanium dioxide, such as Typaque CR-50-2, CR-57, CR-58-2, CR-60-2, CR-60-3, CR-Super -70, CR-90-2, CR-95, CR953, PC-3, PF-690, PF-691, PF-699, PF-711, PF-728, PF-736, PF-737, PF-739 , PF-740, PF-742, R-980, UT-771 (all manufactured by Ishihara Sangyo Co., Ltd.), C.I. I. Pigment White 6, etc. can be exemplified.

When titanium dioxide is selected as the white pigment, the color developability of the white image can be further enhanced. The white pigment may be used alone or in combination of two or more.

As non-white pigments, for example, color materials such as cyan, yellow, magenta, and black are preferable. The non-white pigment is excellent in storage stability such as light resistance, weather resistance, and gas resistance, and from that viewpoint, organic pigments are preferable.

Specifically, azo pigments such as insoluble azo pigments, condensed azo pigments, azo lakes, chelate azo pigments, phthalocyanine pigments, perylene and perinone pigments, anthraquinone pigments, quinacridone pigments, dioxane pigments, thioindigo pigments, isoindolinone pigments, quinophthalone pigments, etc. polycyclic pigments, dye chelates, dye lakes, nitro pigments, nitroso pigments, aniline black, daylight fluorescent pigments, carbon black and the like are used. The above pigments may be used singly or in combination of two or more. Furthermore, you may use a luster pigment as a non-white pigment.

Specific examples of the pigment include, but are not limited to, the following.

Examples of black pigments include No. 2300, No. 900, MCF88, no. 33, No. 40, No. 45, No. 52, MA7, MA8, MA100, No. 2200B, etc. (manufactured by Mitsubishi Chemical Corporation), Raven 5750, Raven 5250, Raven 5000, Raven 3500, Raven 1255, Raven 700, etc. (manufactured by Carbon Columbia, R1), 400Rega Regal 330R, Regal 660R, Mogul L, Monarch 700, Monarch 800, Monarch 880, Monarch 900, Monarch 1000, Monarch 1100, Monarch 1300, Monarch 1400, etc. (manufactured by Cabot Corporation (CABOT JAPAN), Wcolcol K.K.) 、Ｃｏｌｏｒ Ｂｌａｃｋ ＦＷ２、Ｃｏｌｏｒ Ｂｌａｃｋ ＦＷ２Ｖ、Ｃｏｌｏｒ Ｂｌａｃｋ ＦＷ１８、Ｃｏｌｏｒ Ｂｌａｃｋ ＦＷ２００、Ｃｏｌｏｒ Ｂ１ａｃｋ Ｓ１５０、Ｃｏｌｏｒ Ｂｌａｃｋ Ｓ１６０、Ｃｏｌｏｒ Ｂｌａｃｋ Ｓ１７０、Ｐｒｉｎｔｅｘ ３５、Ｐｒｉｎｔｅｘ Ｕ、Ｐｒｉｎｔｅｘ Ｖ、Ｐｒｉｎｔｅｘ １４０Ｕ、Ｓｐｅｃｉａｌ Ｂｌａｃｋ ６、Ｓｐｅｃｉａｌ Ｂｌａｃｋ ５、Ｓｐｅｃｉａｌ Black 4A, Special Black 4 (manufactured by Degussa).

In the present embodiment, the non-white pigment is oxidized with hypohalous acid and/or hypohalite, oxidized with ozone, or oxidized with persulfuric acid and/or persulfate as a self-dispersing pigment. A black self-dispersing pigment surface-treated with is preferred in terms of high color development. As the self-dispersing pigment of the black ink composition, commercially available products can be used, and a preferred example is Microjet CW1 (manufactured by Orient Chemical Industry Co., Ltd.).

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

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

Examples of cyan pigments include C.I. I. Pigment Blue 1, 2, 3, 15, 15:1, 15:2, 15:3, 15:34, 15:4, 16, 18, 22, 25, 60, 65, 66, C.I. I. bat blue 4,60.

Pigments other than magenta, cyan, and yellow are not particularly limited, but include, for example, C.I. I. Pigment Green 7, 10, C.I. I. Pigment Brown 3, 5, 25, 26, C.I. I. Pigment Orange 1, 2, 5, 7, 13, 14, 15, 16, 24, 34, 36, 38, 40, 43, 63.

Examples of pearl pigments include, but are not particularly limited to, pigments having pearl luster or interference luster such as titanium dioxide-coated mica, fish scale foil, and bismuth oxide.

Examples of metallic pigments include, but are not limited to, particles made of a single substance or an alloy of aluminum, silver, gold, platinum, nickel, chromium, tin, zinc, indium, titanium, copper, and the like.

It is preferable that the pigment can be stably dispersed in the dispersion medium, and if necessary, a dispersant may be used to disperse the pigment. Examples of the dispersant include resin dispersants and the like, and are selected from those capable of improving the dispersion stability of the pigment in the second treatment liquid.

The pigment may also be used as a self-dispersing pigment by modifying the surface of the pigment particles by oxidizing or sulfonating the pigment surface with ozone, hypochlorous acid, fuming sulfuric acid, or the like. When the pigment is a self-dispersing type, the cation responsiveness can be improved by modifying the surface of the pigment so that a negative charge is generated. Functional groups that generate such negative charges include carboxylic acid groups, sulfonic acid groups, phosphoric acid groups, and the like, and can be introduced by appropriately selecting the treatment.

Examples of commercial products of self-dispersing pigments having a modified pigment surface include CAB-O-JET series manufactured by Cabot Corporation (CAB-O-JET200, 300, 250C, 260M, 270C), CW-1 manufactured by Orient Chemical Co., Ltd., CW-2 is included.

Examples of resin dispersants include poly(meth)acrylic acid, (meth)acrylic acid-acrylonitrile copolymer, (meth)acrylic acid-(meth)acrylic acid ester copolymer, vinyl acetate-(meth)acrylic acid ester. (meth)acrylic resins such as copolymers, vinyl acetate-(meth)acrylic acid copolymers, vinylnaphthalene-(meth)acrylic acid copolymers, and salts thereof; styrene-(meth)acrylic acid copolymers, Styrene-(meth)acrylic acid-(meth)acrylic ester copolymer, styrene-α-methylstyrene-(meth)acrylic acid copolymer, styrene-α-methylstyrene-(meth)acrylic acid-(meth) Styrene-based resins such as acrylic acid ester copolymers, styrene-maleic acid copolymers, styrene-maleic anhydride copolymers and their salts; polymer compounds containing urethane bonds in which isocyanate groups and hydroxyl groups have reacted (resin ), which may be linear and/or branched, and may or may not have a crosslinked structure, urethane resins and salts thereof; polyvinyl alcohols; vinylnaphthalene-maleic acid copolymers and salts thereof; vinyl acetate - maleic acid ester copolymers and salts thereof; and; water-soluble resins such as vinyl acetate-crotonic acid copolymers and salts thereof. Among these, a copolymer of a monomer having a hydrophobic functional group and a monomer having a hydrophilic functional group, and a polymer composed of a monomer having both a hydrophobic functional group and a hydrophilic functional group are preferable. As the form of the copolymer, any form of random copolymer, block copolymer, alternating copolymer and graft copolymer can be used.

Examples of commercially available styrene resin dispersants include X-200, X-1, X-205, X-220, X-228 (manufactured by Seiko PMC), Nopcos Perth (registered trademark) 6100, 6110 (San Nopco Co., Ltd.). company), Joncryl 67, 586, 611, 678, 680, 682, 819 (manufactured by BASF), DISPERBYK-190 (manufactured by BYK-Chemie Japan Co., Ltd.), N-EA137, N-EA157, N-EA167, N -EA177, N-EA197D, N-EA207D, E-EN10 (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) and the like.

Commercially available acrylic resin dispersants include BYK-187, BYK-190, BYK-191, BYK-194N, BYK-199 (manufactured by BYK Chemie Co., Ltd.), Aron A-210, A6114, AS-1100, AS-1800, A-30SL, A-7250, CL-2 manufactured by Toagosei Co., Ltd.) and the like.

Furthermore, commercially available urethane resin dispersants include BYK-182, BYK-183, BYK-184, BYK-185 (manufactured by BYK-Chemie Co., Ltd.), TEGO Disperse 710 (manufactured by Evonic Tego Chemi), and Borchi (registered trademark). Gen1350 (manufactured by OMG Borschers) and the like.

Although commercial products are listed above, the dispersant may be obtained by synthesis.

A dispersing agent may be used individually by 1 type, or may use 2 or more types together. The total content of the dispersant is preferably 0.1 parts by mass or more and 30 parts by mass or less, more preferably 0.5 parts by mass or more and 25 parts by mass or less, and even more preferably 1 mass part with respect to 50 parts by mass of the pigment. parts or more and 20 parts by mass or less, more preferably 1.5 parts by mass or more and 15 parts by mass or less. When the content of the dispersant is 0.1 parts by mass or more with respect to 50 parts by mass of the pigment, the dispersion stability of the pigment can be further enhanced. Further, when the content of the dispersant is 30 parts by mass or less with respect to 50 parts by mass of the pigment, the viscosity of the resulting dispersion can be kept low.

The dispersant may be used alone or in combination of two or more. At least one of the dispersants should be selected to contain an acid group such as a carboxylic acid group, a sulfonic acid group, or a phosphoric acid group. can improve cation responsiveness.

The content of the pigment is preferably 0.3% by mass or more and 20% by mass or less, more preferably 0.5% by mass or more and 15% by mass or less, relative to the total mass of the second treatment liquid. Furthermore, it is preferably 1% by mass or more and 10% by mass or less, and more preferably 2% by mass or more and 7% by mass or less.

1.3.1.2. Resin Particles The second treatment liquid contains resin particles. The resin particles can further improve the adhesion of the image formed by the pigment in the second treatment liquid adhered to the fabric. Examples of resin particles include urethane-based resins, acrylic resins (including styrene-acrylic resins), fluorene-based resins, polyolefin-based resins, rosin-modified resins, terpene-based resins, polyester-based resins, polyamide-based resins, and epoxy-based resins. , vinyl chloride-based resins, vinyl chloride-vinyl acetate copolymers, ethylene-vinyl acetate-based resins, and the like. Among them, urethane-based resins, acrylic-based resins, polyolefin-based resins, and polyester-based resins are preferable. These resin particles are often handled in the form of an emulsion, but may be supplied in the form of powder. Also, the resin particles can be used singly or in combination of two or more.

Urethane-based resin is a general term for resins having urethane bonds. In addition to urethane bonds, urethane-based resins include polyether-type urethane resins containing ether bonds in the main chain, polyester-type urethane resins containing ester bonds in the main chain, and polycarbonate-type urethane resins containing carbonate bonds in the main chain. You may In addition, as the urethane resin, commercially available products may be used, for example, Superflex 460, 460s, 840, E-4000 (trade name, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), Rezamin D-1060, D-2020, D-4080, D-4200, D-6300, D-6455 (trade name, manufactured by Dainichiseika Kogyo Co., Ltd.), Takelac WS-6021, W-512-A-6 (trade name, manufactured by Mitsui Chemicals Polyurethanes Co., Ltd. ), Sancure 2710 (trade name, manufactured by LUBRIZOL), and Permalin UA-150 (trade name, manufactured by Sanyo Chemical Industries, Ltd.).

Acrylic resin is a general term for polymers obtained by polymerizing at least acrylic monomers such as (meth)acrylic acid and (meth)acrylic acid ester as one component. Examples include resins obtained, copolymers of acrylic monomers and other monomers, and the like. Examples thereof include acrylic-vinyl resins which are copolymers of acrylic monomers and vinyl monomers. Further, for example, the vinyl-based monomer includes styrene.

Acrylamide, acrylonitrile and the like can also be used as acrylic monomers. For resin emulsions made from acrylic resins, commercially available products may be used, such as FK-854 (trade name, manufactured by Chuo Rika Kogyo Co., Ltd.), Movinyl 952B, 718A (trade name, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.). , Nipol LX852, LX874 (trade name, manufactured by Nippon Zeon Co., Ltd.) and the like.

In this specification, the acrylic resin may be a styrene-acrylic resin described later. Moreover, in this specification, the notation of (meth)acrylic means at least one of acrylic and methacrylic.

Styrene-acrylic resins are copolymers obtained from styrene monomers and (meth)acrylic monomers, and include styrene-acrylic acid copolymers, styrene-methacrylic acid copolymers, styrene-methacrylic acid -acrylic acid ester copolymer, styrene-α-methylstyrene-acrylic acid copolymer, styrene-α-methylstyrene-acrylic acid-acrylic acid ester copolymer, and the like. Commercially available styrene-acrylic resins may be used, for example, Joncryl 62J, 7100, 390, 711, 511, 7001, 632, 741, 450, 840, 74J, HRC-1645J, 734, 852, 7600, 775, 537J, 1535, PDX-7630A, 352J, 352D, PDX-7145, 538J, 7640, 7641, 631, 790, 780, 7610 (trade name, manufactured by BASF), Movinyl 966A, 975N (trade name, Nippon Synthetic Chemical Industry Co., Ltd.), Vinyblan 2586 (Nissin Chemical Industry Co., Ltd.), or the like may be used.

Polyolefin-based resins have olefins such as ethylene, propylene, and butylene in their structural skeletons, and known resins can be appropriately selected and used. As the olefin resin, commercially available products can be used, such as Arrowbase CB-1200 and CD-1200 (trade names, manufactured by Unitika Ltd.).

In addition, although the commercial products are listed above, the resin particles may be obtained by synthesis.

The content of the resin particles in the second treatment liquid is 0.1% by mass or more and 20% by mass or less, preferably 1% by mass or more and 15% by mass or less, as a solid content with respect to the total mass of the second treatment liquid. It is preferably 2% by mass or more and 10% by mass or less.

In addition, the resin particles may have cationic responsiveness. Cationic responsiveness can be expressed by arranging negatively charged groups on the surface of the resin particles. Examples of commercially available resin particles having such cationic responsiveness include Takelac WS-6021, Movinyl 966A (trade name of Nippon Synthetic Chemical Industry Co., Ltd., acrylic resin emulsion), Microgel E-1002, Microgel E-5002 (trade name, manufactured by Nippon Paint Co., Ltd.), Boncoat 4001, Boncoat 5454 (trade name, manufactured by DIC), SAE1014 (trade name, Zeon Corporation), Saibinol SK-200 (trade name, manufactured by SAIDEN CHEMICAL INDUSTRY CO., LTD.), Joncryl 7100, Joncryl 390, Joncryl 711, Joncryl 511, Jongkril 7001, Jongkril 632, Jongkril 741, Jongkril 450, Jongkril 840, Jongkril 74J, Jongkril HRC-1645J, Jongkril 734, Jongkril 852, Jongkril 7600, Jongkril 775, Jonkril 537J, Jongkrill 1535, Jongkrill PDX-7630A, Jongkrill 352J, Jongkrill 352D, Jongkrill PDX-7145, Jongkrill 538J, Jongkrill 7640, Jongkrill 7641, Jongkrill 631, Jongkrill 790, Jongkrill 780, Jongkrill 7610 (trade name, manufactured by BASF) and NK Binder R-5HN (trade name, manufactured by Shin-Nakamura Chemical Co., Ltd., acrylic resin emulsion, solid content 44%). When the resin particles have cationic responsiveness, the cohesiveness of the components of the second treatment liquid is further increased, so that an image with better color development can be obtained.

1.3.1.3. Water/Organic Solvent As for the water and organic solvent contained in the second treatment liquid, the same ones as described in the section for the first treatment liquid can be used. It preferably contains alcohol, and more preferably contains glycerin.

1.3.1.4. Other Substances The second treatment liquid may contain components such as surfactants, preservatives/antifungal agents, rust inhibitors, chelating agents, viscosity modifiers, antioxidants, and antifungal agents. These substances are the same as those described in the section on the first treatment liquid, so description thereof is omitted.

1.3.2. Ink Jet Method In the second treatment liquid application step, the second treatment liquid is applied to the fabric by an ink jet method. In the step of applying the second treatment liquid to the recording medium by the inkjet method, ink droplets (liquid droplets) of the second treatment liquid are applied to the recording medium from the inkjet head of the printer. At this time, by intermittently ejecting ink droplets at a predetermined timing and with a predetermined mass, the ink droplets adhere to the recording medium to form a desired image, character, pattern, color, or other design (printing). ) is done.

Adhesion of the second treatment liquid by the inkjet method can be performed by either a serial recording apparatus equipped with a serial inkjet head or a line recording apparatus equipped with a line inkjet head.

1.4. Other Steps The fabric treatment method of the present embodiment may include, for example, a clear ink application step of ejecting a clear ink composition that does not contain a colorant from an inkjet head and attaching it to the fabric. In addition, a primary drying step of applying the second treatment liquid to the heated fabric, a secondary drying step of heating the fabric after applying the second treatment liquid, and the like may be provided, and these steps may be performed multiple times. .

1.5. Step Interval, Temperature, etc. In the fabric treatment method of the present embodiment, the time interval between the first treatment liquid application step and the second treatment liquid application step is not particularly limited, but is preferably 3 seconds or longer. That is, it is more preferable that the time from the completion of the spraying of the first treatment liquid to the landing of the second treatment liquid is 3 seconds or longer. By doing so, the drying of the first treatment liquid is improved, and the effect of suppressing bleeding is further enhanced.

Further, when a drying step (secondary drying step) of heating the fabric is provided after the second treatment liquid applying step, it is more preferable to heat the fabric at 100°C or higher and 140°C or lower. This temperature range is preferable because it is difficult to apply a thermal load to a fabric containing chemical fibers such as nylon and polyester. Furthermore, it is more preferable that the heating time in the secondary drying step is about 2 minutes or more and 3 minutes or less. By doing so, the thermal load on the fabric can be further reduced.

1.6. Effects According to the fabric treatment method of the present embodiment, the first treatment liquid (pretreatment liquid) is sprayed from the heated nozzle tip opening, so that the first treatment liquid is water or solvent in the treatment liquid. It adheres to the fabric in a state where the volatile component is partially volatilized. As a result, the first treatment liquid is prevented from penetrating into the interior of the fabric because the first treatment liquid adheres in a state containing only the minimum amount of solvent required for wetting and spreading. Therefore, the first treatment liquid is more likely to be retained near the surface of the fabric, and a higher effect of aggregating the components of the second treatment liquid near the surface of the fabric can be obtained. As a result, it is possible to reduce bleeding of the image due to the second treatment liquid. In addition, the storage stability and sprayability of the first treatment liquid can be improved as compared with the case where the amount of water and solvent in the first treatment liquid is reduced from the beginning. Furthermore, by reducing the volatile components of the first treatment liquid during spraying, the amount of heat applied during drying of the treated product (printed product) can be reduced, and the time required for drying can be shortened.

2. Examples Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. Hereinafter, "%" is based on mass unless otherwise specified.

2.1. Preparation of Pigment Dispersion A self-dispersing pigment, manufactured by Orient Chemical Co., Ltd., CW-1 was dispersed in ion-exchanged water to adjust the concentration, and a pigment dispersion (pigment solid content 20% by weight, resin solid content 5 weight %) was obtained. Tables 1 to 3 show the solid concentration of the pigment in the second treatment liquid.

2.2. Preparation of each treatment liquid Each component was placed in a container so as to have the composition shown in Tables 1 to 3, mixed and stirred with a magnetic stirrer for 2 hours, and then filtered through a membrane filter having a pore size of 5 μm. A treatment liquid according to a comparative example was obtained.

Abbreviations, physical properties, etc. in Tables 1 to 3 are as follows.
・ Unisense KHE100L (manufactured by Senka Co., Ltd.)
・ PAA-HCL-05 (manufactured by Nittobo Medical)
・ Calcium nitrate tetrahydrate (Ca: 17%)
・Olfine E1004 (manufactured by Nissin Chemical Industry Co., Ltd.) HLB = 7 to 9
・Olfine E1010 (manufactured by Nissin Chemical Industry Co., Ltd.) HLB = 13 to 14
・Olfine E1020 (manufactured by Nissin Chemical Industry Co., Ltd.) HLB = 15 to 16
・Olfine E1030W (manufactured by Nissin Chemical Industry Co., Ltd.) HLB = 16 to 18
・ Ethylene glycol diethyl ether SP = 8.6
・Diethylene glycol monobutyl ether SP = 9.5
· 2-methyl-1,3-pentanediol SP = 10.3
・ Ethylene glycol monomethyl ether SP = 11.4
・1,4-butanediol SP = 12.1
・ NBP-211 (blocked isocyanate) (manufactured by Meisei Chemical Industry Co., Ltd.)
・Takelac W-6061 (manufactured by Mitsui Chemicals) non-crosslinkable urethane resin

2.3. Evaluation method 2.3.1. Pretreatment As a sprayer, heated air and the first treatment liquid are sent to a two-fluid nozzle, Mini Atomize Nozzle MMA-10 (manufactured by Everloy Shoji Co., Ltd.), and the printed surface of the fabric is sprayed from a position 30 cm away from the fabric in the vertical direction. to apply the first treatment liquid. At this time, the scanning speed of the nozzle (relative speed between the fabric and the nozzle) was adjusted so that the coating amount of the coating liquid was 5 g per A4 size. The heated air is generated by a hot air generator HAP4020 (manufactured by Hakko Denki Co., Ltd.), and the temperature just before it is mixed with the coating liquid at the nozzle is measured with a tip welding type K-type thermocouple with a wire diameter of 0.2 mm. (manufactured by Three High). At this time, the set temperature of the hot air generator was adjusted so that the temperature of the air reached the desired value. Also, the amount of the coating liquid sent to the nozzle was adjusted to 10 mL/min. Furthermore, after the application of the first treatment liquid was completed, the fabric was heated using a conveyor dryer.

The fabrics used are listed in Tables 1-3. "PES" refers to polyester fabric (100% polyester, taffeta fabric), "nylon" refers to nylon fabric (100% nylon, taffeta fabric), and "cotton" refers to It is a cotton fabric (100% cotton, sheeting fabric).

Further, in Example 5 using a nozzle that is not a two-fluid nozzle (single-fluid nozzle), AAB10000AUH-03 manufactured by Spraying Systems Co., Ltd. was used, except that the nozzle tip was heated with a heater, the same as the two-fluid nozzle. Then, a treated fabric was obtained by spraying the first treatment liquid.

In Tables 1 to 3, "nozzle" and "tip temperature" indicate the temperature of the heated air just before it is mixed with the coating liquid in the nozzle in the example using the two-fluid nozzle, and the one-fluid nozzle was used. In the example, the temperature at the tip of the nozzle is described. Also, the temperature of the fabric when spraying the first treatment liquid is described.

2.3.2. Preparation of Printed Material In each example, the pretreated fabric was printed with the second treatment liquid by an inkjet method using an inkjet printer (PX-G930: manufactured by Seiko Epson Corporation). The print pattern had a resolution of 1440×1440 dpi. In Comparative Example 1, printing was performed on a fabric that had not been pretreated. Drying temperatures and times after printing are listed in Tables 1-3.

2.3.3. Evaluation of Color Development The OD value of the fabric after printing in each example was measured using a fluorescence spectrodensitometer ("FD-7", manufactured by Konica Minolta) to evaluate color development. Judgment was made according to the following evaluation criteria, and the results are shown in Tables 1 to 3. Incidentally, in Example 27, the fabric was damaged.
A: OD value exceeds 1.5 B: OD value exceeds 1.47 C: OD value exceeds 1.45 D: OD value exceeds 1.4 E: OD value is 1.4 or less

2.3.4. Evaluation of Bleeding The printed fabric obtained in each example was visually evaluated for bleeding at the boundary between the image-recorded area and the unrecorded white background. Evaluation was performed according to the following criteria, and the results are shown in Tables 1 to 3. If the evaluation is C or higher, it can be said that a good effect is obtained.
A: No bleeding B: Slight bleeding but not visually noticeable C: Slight bleeding can be visually confirmed but no problem level D: Bleeding is visually noticeable and problematic

2.3.5. Washing machine test Each of the obtained printed fabrics of each example was cut into A4 size and washed together with a 2 kg dummy. A washing machine (ES-GW11E, manufactured by Sharp Corporation) was used. The fabric was washed 5 times with 20 liters of water and 15 min of washing time without dehydration, and then dried in the shade to check the degree of discoloration. The color was measured with a fluorescence spectrodensitometer ("FD-7", manufactured by Konica Minolta), and the difference in OD value (discoloration) before and after washing was evaluated according to the following criteria. The results are shown in Tables 1 to 3. Described. In Comparative Example 1, since no pretreatment was performed, the "color developability" was evaluated as "E".
A: Difference in OD value before and after washing is less than 0.03 B: Difference in OD value before and after washing is 0.03 or more and less than 0.06 C: Difference in OD value before and after washing is 0.06 or more and less than 0.09 D: Difference in OD value before and after washing exceeds 0.09

2.3.6. Dry rubbing fastness test Using a Gakushin type friction and abrasion tester manufactured by Tester Sangyo Co., Ltd., a dry plain weave cotton cloth (black) is placed on the printed surface and a load of 500 g is applied to the printed fabric of each example. A rubbing fastness test was performed by rubbing 100 times under a pressure. The degree of contamination of the plain-woven cotton cloth after rubbing and the surface condition of the rubbed printed portion were observed and evaluated using a gray scale according to the following evaluation criteria.
(ISO105-X12)
A: Over grade 4 B: Over grade 3 C: Over grade 2 D: Over 1.5 grade

2.3.7. Wet rubbing fastness test The dye transfer density of the printed fabric of each example was observed and evaluated using a gray scale according to the following evaluation criteria.
(ISO105-X12)
A: Over grade 4 B: Over grade 3 C: Over grade 2 D: Over 1.5 grade

2.4. Evaluation results A first treatment liquid adhesion step of spraying a first treatment liquid containing a cationic compound and water from a nozzle tip opening at 180 ° C. or higher and adhering it to a fabric, a pigment, resin particles, and water. and a second treatment liquid containing an organic solvent is applied to the fabric to which the first treatment liquid has been applied by an inkjet method. , both of which were good with little blurring of the image.

The embodiments and modifications described above are examples, and the present invention is not limited to these. For example, it is also possible to appropriately combine each embodiment and each modification.

The present invention includes configurations that are substantially the same as the configurations described in the embodiments, for example, configurations that have the same function, method and result, or configurations that have the same purpose and effect. Moreover, the present invention includes configurations obtained by replacing non-essential portions of the configurations described in the embodiments. In addition, the present invention includes a configuration that achieves the same effects or achieves the same purpose as the configurations described in the embodiments. In addition, the present invention includes configurations obtained by adding known techniques to the configurations described in the embodiments.

The following content is derived from the embodiment and modification described above.

The method of treating the fabric is
a first treatment liquid applying step of spraying a first treatment liquid containing a cationic compound and water from a nozzle tip opening at 180° C. or higher to adhere it to the fabric;
a second treatment liquid applying step of applying a second treatment liquid containing a pigment, resin particles, water, and an organic solvent to the fabric to which the first treatment liquid has adhered by an inkjet method;
Prepare.

According to this fabric treatment method, the first treatment liquid (pretreatment liquid) is sprayed from a heated nozzle so that the volatile components such as water and solvent in the treatment liquid are partially volatilized. It adheres to the fabric in a state of As a result, the first treatment liquid is prevented from penetrating into the interior of the fabric because the first treatment liquid adheres in a state containing only the minimum amount of solvent required for wetting and spreading. Therefore, the first treatment liquid is more likely to be retained near the surface of the fabric, and a higher effect of aggregating the components of the second treatment liquid near the surface of the fabric can be obtained. As a result, it is possible to reduce bleeding of the image due to the second treatment liquid. In addition, the storage stability and sprayability of the first treatment liquid can be improved as compared with the case where the amount of water and solvent in the first treatment liquid is reduced from the beginning.

In the above fabric treatment method,
The first treatment liquid application step may be performed using a two-fluid nozzle.

According to this fabric treatment method, by spraying the first treatment liquid using the two-fluid nozzle, the droplet size can be further reduced, and the volatilization of the volatile components (in particular, the volatilization until they adhere to the fabric). ) is promoted. As a result, when the first treatment liquid adheres to the fabric, the penetration of the first treatment liquid into the fabric is more easily suppressed, and the first treatment liquid is more likely to stay in the vicinity of the surface of the fabric, so that bleeding can be further reduced. can be done.

Moreover, by using a two-fluid nozzle, the first treatment liquid is also heated by the heated gas during spraying, so that the high temperature state can be maintained for a longer period of time. A long time in the high-temperature state promotes volatilization of the volatile components contained in the first treatment liquid, thereby further suppressing permeation of the first treatment liquid into the interior of the fabric. Moreover, by using a two-fluid nozzle, the first treatment liquid can be sprayed at a higher pressure, and can be attached to the fabric in a shorter time.

In the above fabric treatment method,
The first treatment liquid may contain a reactive compound.

According to this fabric treatment method, the washing fastness of the resulting image can be improved. In the above fabric treatment method, bleeding is reduced by the presence of the second treatment liquid near the surface of the fabric, but the fastness tends to deteriorate in some cases. On the other hand, by containing a reactive compound in the first treatment liquid, it is possible to improve fastness. In addition, when spraying with a two-fluid nozzle, it can be attached to the fabric in a short time, so the reactivity (crosslinking property) of the reactive compound is less likely to be deactivated during spraying, and the fastness is improved. can be done.

In addition, according to this fabric treatment method, it is possible to improve wet rubbing fastness comparable to overcoat treatment (post-treatment). However, by attaching the first treatment liquid to the fabric first, the reaction of the reactive compound can enhance the adhesion between the second treatment liquid and the fabric. Therefore, it is possible to exhibit washing fastness that is difficult to obtain by overcoating.

In the above fabric treatment method,
The first treatment liquid may further contain an organic solvent having an SP value of 9.0 or more and 12.0 or less.

According to this fabric treatment method, the wettability of the first treatment liquid to the fabric is improved, so that even a relatively small amount of the first treatment liquid can be applied uniformly. Further, since the first treatment liquid is sprayed from the heated nozzle, the volatile components are reduced before the first treatment liquid reaches the fabric. Even in such a state, sufficiently good wettability can be ensured.

In the above fabric treatment method,
The first treatment liquid may further contain an acetylene glycol-based surfactant having an HLB value of 10 or more and 16 or less.

According to this fabric treatment method, the wettability of the first treatment liquid to the fabric can be further enhanced, so that the first treatment liquid can be applied more uniformly.

In the above fabric treatment method,
The surface temperature of the fabric in the step of applying the first treatment liquid may be 100°C or higher and 150°C or lower.

In this fabric treatment method, the fabric is also heated by the adherence of the heated first treatment liquid. Therefore, the heating of the fabric by a platen heater or the like can be omitted or weakened, and the energy required for the treatment can be reduced.

In the above fabric treatment method,
A content of the cationic compound in the first treatment liquid may be 0.5% by mass or more and 10.0% by mass or less with respect to the total amount of the first treatment liquid.

According to this fabric treatment method, it is possible to obtain better color development and better fastness of the image by the second treatment liquid.

In the above fabric treatment method,
The fabric may contain fibers selected from polyester and polyamide.

According to this fabric treatment method, it is possible to form an image with good fastness even on a fabric that contains chemical fibers and is difficult to be exposed to high temperatures. That is, by reducing the volatile components of the first treatment liquid during spraying, the amount of heat applied during drying of the treated article can be reduced, and the time required for drying can be shortened.

Claims (8)

a first treatment liquid applying step of spraying a first treatment liquid containing a cationic compound and water from a nozzle tip opening at 180° C. or higher to adhere it to the fabric;
a second treatment liquid applying step of applying a second treatment liquid containing a pigment, resin particles, water, and an organic solvent to the fabric to which the first treatment liquid has adhered by an inkjet method;
A method of treating a fabric, comprising: In claim 1,
The fabric treatment method, wherein the first treatment liquid application step is performed using a two-fluid nozzle. In claim 1 or claim 2,
The method for treating fabric, wherein the first treatment liquid contains a reactive compound. In any one of claims 1 to 3,
The method for treating fabric, wherein the first treatment liquid further contains an organic solvent having an SP value of 9.0 or more and 12.0 or less. In any one of claims 1 to 4,
A method for treating fabric, wherein the first treatment liquid further contains an acetylene glycol-based surfactant having an HLB value of 10 or more and 16 or less. In any one of claims 1 to 5,
The method for treating a fabric, wherein the surface temperature of the fabric in the step of applying the first treatment liquid is 100°C or higher and 150°C or lower. In any one of claims 1 to 6,
The method for treating fabric, wherein the content of the cationic compound in the first treatment liquid is 0.5% by mass or more and 10.0% by mass or less with respect to the total amount of the first treatment liquid. In any one of claims 1 to 7,
A method of treating fabric, wherein the fabric comprises fibers selected from polyester and polyamide.