WO2016125869A1 - Encre pour jet d'encre, procédé d'impression à jet d'encre, tissu imprimé par un procédé d'impression à jet d'encre et système d'impression à jet d'encre - Google Patents

Encre pour jet d'encre, procédé d'impression à jet d'encre, tissu imprimé par un procédé d'impression à jet d'encre et système d'impression à jet d'encre Download PDF

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Publication number
WO2016125869A1
WO2016125869A1 PCT/JP2016/053410 JP2016053410W WO2016125869A1 WO 2016125869 A1 WO2016125869 A1 WO 2016125869A1 JP 2016053410 W JP2016053410 W JP 2016053410W WO 2016125869 A1 WO2016125869 A1 WO 2016125869A1
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Prior art keywords
ink
fabric
inkjet
inkjet printing
mass
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PCT/JP2016/053410
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English (en)
Japanese (ja)
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金子　学
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コニカミノルタ株式会社
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Priority to JP2016573423A priority Critical patent/JPWO2016125869A1/ja
Publication of WO2016125869A1 publication Critical patent/WO2016125869A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/30—Inkjet printing inks
    • C09D11/32—Inkjet printing inks characterised by colouring agents
    • C09D11/328—Inkjet printing inks characterised by colouring agents characterised by dyes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/30—Inkjet printing inks
    • C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/16—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using dispersed, e.g. acetate, dyestuffs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/60—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing polyethers
    • D06P1/613—Polyethers without nitrogen
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form

Definitions

  • the present invention relates to an inkjet ink, an inkjet printing method, a fabric printed by the inkjet printing method, and an inkjet printing system.
  • the inkjet printing method does not have a high recording speed as compared with the screen printing method, and there is a strong demand for a technique capable of forming an image at high speed even on a fabric having a certain area or more by the inkjet printing method.
  • the one-pass ink jet textile printing method can record one type or two or more types of ink on the surface of the recording medium by ejecting the ink jet head from the ink jet head in a single scan on the recording medium. Also, an image can be formed at a relatively high speed of 20 to 80 m / min.
  • the present invention has been made in view of the above problems, and an object of the present invention is to improve the permeability to the back surface of a recording medium such as a cloth and the density of the surface of the recording medium such as a cloth even in high-speed recording. Another object of the present invention is to provide an inkjet ink, an inkjet textile printing method, a fabric printed by the inkjet textile printing method, and an inkjet textile printing system that can improve ejection stability, ink storage stability, and drying properties.
  • the object of the present invention can be achieved by the following configuration.
  • the permeability to the back surface of the recording medium such as cloth and the density of the surface of the recording medium such as cloth can be improved, and the storage stability and ejection stability of the ink-jet ink are good. And the drying property of a recording medium such as a fabric can be improved.
  • the permeability to the back surface of a recording medium such as a cloth and the density of the surface of the recording medium such as a cloth can be improved, and the storability and ejection stability of the inkjet ink can be improved.
  • An inkjet printing system comprising the inkjet ink according to any one of [1] to [3] and an inkjet printing apparatus.
  • the inkjet printing system according to [6] wherein the inkjet printing apparatus is a one-pass system.
  • An ink-jet printing method characterized by the above.
  • the ink-jet printing method according to [8] comprising a preliminary drying step after the image forming step.
  • the permeability to the back surface of a recording medium such as a cloth and the density of the surface of the recording medium such as a cloth can be improved, and the storability and ejection stability of inkjet ink can be improved. It is possible to provide an ink-jet ink for printing, an ink-jet printing method, a fabric printed by the ink-jet printing method, and an ink-jet printing system that can improve the drying property of a recording medium such as a fabric.
  • FIG. 1 is a diagram schematically illustrating an example of the configuration of an inkjet printing apparatus according to an embodiment of the present invention.
  • FIG. 2A is a diagram schematically illustrating the configuration of the inkjet head unit according to the present embodiment when viewed in plan
  • FIG. 2B is a diagram schematically illustrating the configuration of the inkjet head unit as viewed from the side.
  • FIG. 2C is a diagram schematically illustrating the configuration of the inkjet head unit as viewed from the front.
  • ⁇ is used to mean that the numerical values described before and after it are included as a lower limit value and an upper limit value.
  • mass% refers to the content of each component expressed in mass% when the total mass of the ink is 100 mass% unless otherwise specified.
  • the inkjet ink according to the present invention contains at least a polyalkylene glycol, a disperse dye, and an anionic dispersant.
  • the inkjet ink according to the present invention contains polyalkylene glycol from the viewpoint of allowing the disperse dye to smoothly penetrate into the back surface of a recording medium such as a fabric.
  • the dye By incorporating a polyalkylene glycol having a relatively high boiling point into the ink-jet ink, the dye can penetrate into the back surface, and the back surface of a recording medium such as a fabric can be used even if the time for the image forming process is shortened by high-speed recording.
  • the permeability to can be increased.
  • the weight average molecular weight to 400 or more and 1000 or less, it is possible to improve ejection stability, ink storage stability, and drying properties.
  • the reason why the polyalkylene glycol increases the permeability to the back side of the fabric is not clear in detail, but since the polyalkylene glycol has a higher boiling point than other organic solvents, in the preliminary drying step at the time of printing described below.
  • the polyalkylene glycol remaining in the fabric dissolves the disperse dye in the color developing step, so that the disperse dye easily penetrates into the fabric and the back surface permeability to the fabric is improved.
  • polyalkylene glycol having a relatively large molecular weight compared with other solvents has extremely low solubility of the disperse dye at room temperature and does not interact. Therefore, it is considered that the dye can be kept in a stable dispersed state and contributes not only to dispersion stability and ejection stability during storage, but also to suppression of bleeding when the ink lands on the fabric.
  • organic solvents such as ethylene glycol having a relatively low molecular weight may volatilize in the preliminary drying step before the color forming step, and depending on the type of solvent, there may be high dye solubility even at room temperature. Therefore, it is assumed that such an effect does not appear.
  • polyalkylene glycol examples include polyethylene glycol and polypropylene glycol. These polyalkylene glycols can be used alone or in combination of two or more.
  • the weight average molecular weight of the polyalkylene glycol contained in the inkjet ink of the present invention is 400 or more and 1000 or less, preferably 400 or more and 800 or less.
  • Use of a polyalkylene glycol having a weight average molecular weight exceeding the above-mentioned range is not preferable from the viewpoint of ink ejection stability, and is not suitable for high-speed ink because the drying load of the ink increases.
  • it is not preferable to use a polyalkylene glycol having a weight average molecular weight smaller than the above-mentioned range because the polyalkylene glycol volatilizes in the preliminary drying step or the color development step, and the back surface permeability is lowered. Since the solubility of alkylene glycol at room temperature is improved, the storage stability of ink and the suppression of bleeding are reduced.
  • the weight average molecular weight of the polyalkylene glycol can be measured by gel permeation chromatography (GPC).
  • the content of the polyalkylene glycol contained in the inkjet ink is preferably in the range of 2% by mass or more and 10% by mass or less with respect to the whole ink. More preferably, it is 3 mass% or more and 8 mass% or less.
  • the content of the polyalkylene glycol within the above range, the permeability to the back side of the fabric can be made moderate, and the discharge stability can be made good.
  • the disperse dye contained in the inkjet ink will not be excessively dissolved, so that the storage stability of the ink is improved and the volatility is also improved. Since it becomes moderate, the drying property of recording media, such as a cloth, becomes favorable.
  • the ink-jet ink according to the present invention contains a disperse dye dispersed by an anionic dispersant described later.
  • disperse dyes include C. I. Disperse Yellow: 3, 4, 5, 7, 9, 13, 23, 24, 30, 33, 34, 42, 44, 49, 50, 51, 54, 56, 58, 60, 63, 64, 66, 68 71, 74, 76, 79, 82, 83, 85, 86, 88, 90, 91, 93, 98, 99, 100, 104, 108, 114, 116, 118, 119, 122, 124, 126, 135 140, 141, 149, 160, 162, 163, 164, 165, 179, 180, 182, 183, 184, 186, 192, 198, 199, 202, 204, 210, 211, 215, 216, 218, 224 227, 231, 232, C.
  • Disperse Red 1, 4, 5, 7, 11, 12, 13, 15, 17, 27, 43, 44, 50, 52, 53, 54, 55, 56, 58, 59, 60, 65, 72, 73 74, 75, 76, 78, 81, 82, 86, 88, 90, 91, 92, 93, 96, 103, 105, 106, 107, 108, 110, 111, 113, 117, 118, 121, 122 126, 127, 128, 131, 132, 134, 135, 137, 143, 145, 146, 151, 152, 153, 154, 157, 159, 164, 167, 169, 177, 179, 181, 183, 184 , 185, 188, 189, 190, 191, 192, 200, 201, 202, 203, 205, 206, 207, 210, 221, 224, 22 5, 227, 229, 239, 240, 257, 258, 277
  • Disperse Blue 3, 7, 9, 14, 16, 19, 20, 26, 27, 35, 43, 44, 54, 55, 56, 58, 60, 62, 64, 71, 72, 73, 75, 77 79, 79: 1, 79: 2, 81, 82, 83, 87, 91, 93, 94, 95, 96, 102, 106, 108, 112, 113, 115, 118, 120, 122, 125, 128 , 130, 139, 141, 142, 143, 146, 148, 149, 153, 154, 158, 165, 167, 171, 173, 174, 176, 181, 183, 185, 186, 187, 189, 197, 198 , 200, 201, 205, 207, 211, 214, 224, 225, 257, 259, 267, 268, 270, 281, 284, 285, 287 288, 291, 291: 1, 293, 295, 297, 301, 315
  • Disperse Black 1, 3, 10, 24 Etc. are included.
  • the disperse dye is C.I. in that the disperse stability of the disperse dye over time can be kept better.
  • the content of the disperse dye is preferably 0.3% by mass or more and 20% by mass or less, and more preferably 0.5% by mass or more and less than 10% by mass with respect to the entire ink.
  • the Z average particle size of the disperse dye is 300 nm or less, or the maximum particle size of the disperse dye is 900 nm or less.
  • the Z average particle size or the maximum particle size exceeds the above range, clogging is likely to occur in an ink jet printing method in which the fine nozzles emit light, and stable ink ejection may not be possible for a long time.
  • the Z average particle diameter or maximum particle diameter can be measured using a commercially available particle size measuring instrument using a light scattering method, electrophoresis method, laser Doppler method, etc., for example, Zetasizer Nano S manufactured by Malvern. is there.
  • the Z average particle size or maximum particle size can be adjusted by dispersing the disperse dye with a bead mill using a commercially available dispersant, classification of the disperse dye, mixing of classified products, and the like.
  • the ink-jet ink according to the present invention contains a disperse dye dispersed by an anionic dispersant described below.
  • the dye dispersed by the anionic dispersant has dispersion stability due to electrostatic interaction in the ink.
  • a pretreatment agent In an inkjet printing method, it is common to apply a pretreatment agent before image formation with an ink containing a colorant.
  • a fabric dispersed with an anionic dispersant lands on a fabric having a pretreatment agent.
  • the dispersion stability is lowered by a base component and acid-base reaction in the pretreatment agent or a pH change due to volatilization of the counter ion in the ink, and the dye is deposited on the upper part (surface) of the fabric.
  • the disperse dye dispersed by the anionic dispersant has low penetrability into the fabric in the preliminary drying stage, and the dye remains on the fiber surface layer at the top of the fabric.
  • the dye in the vicinity of the fiber penetrates into the upper fiber, and the dye relatively distant from the fiber diffuses while being dissolved in the polyalkylene glycol, and penetrates into the fiber in the lower part (back side) of the fabric.
  • the configuration of the present invention can form images having good back surface permeability and high image density on the front and back surfaces.
  • the printing method using the ink of the present invention since the dependence due to dye penetration in the preliminary drying step is small, it can be particularly preferably used in the inkjet printing, particularly the printing method using the high-speed inkjet printing method.
  • the anionic dispersant that can be used in the present invention is a dispersant for facilitating dispersion of a water-insoluble disperse dye in water, and when dissolved in water, the hydrophilic group is ionized to exhibit an anionic property.
  • Representative hydrophilic groups exhibiting anionic properties include a carboxyl group (—COOH), a sulfonic acid group (—SO 3 H), a sulfate group (—OSO 3 H), and the like.
  • anionic dispersant a known polymer dispersant or the like can be used. Especially, it is preferable that dispersion resin is water-soluble resin, and it is more preferable to have a hydrophobic unit and a hydrophilic unit in good balance.
  • the hydrophilic unit is anionic, and the anionic hydrophilic unit is preferably neutralized with a volatile base component.
  • water-soluble resins examples include acrylic resins, polyvinyl alcohol resins, polyurethane resins, and polyester resins.
  • the acrylic resin in the present invention is a resin having (meth) acrylic acid ester or (meth) acrylic acid as a monomer component; examples thereof include styrene-acrylic resin, acrylonitrile-acrylic resin, vinyl acetate- Acrylic resins are also included. Among these, a resin having a hydrophobic monomer unit and a hydrophilic monomer unit is preferable.
  • hydrophobic monomers examples include acrylic acid alkyl esters such as n-butyl acrylate, 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate (preferably C1-C12 alkyl esters of acrylic acid); ethyl methacrylate, methacrylic acid Methacrylic acid alkyl esters such as butyl and glycidyl methacrylate (preferably C1-C12 methacrylic acid alkyl esters); aromatic vinyl compounds such as styrene, ⁇ -methylstyrene and substituted styrene; ⁇ , ⁇ - such as acrylonitrile and methacrylonitrile Unsaturated nitriles; vinyl acetate, vinyl butyrate, vinyl benzoate and the like are included. Of these, acrylic acid alkyl esters, methacrylic acid alkyl esters and aromatic vinyl compounds are preferred. One type of hydrophobic monomer may be used, or two or more types may be combined.
  • hydrophilic monomers examples include ⁇ , ⁇ -unsaturated acids such as acrylic acid and methacrylic acid; unsaturated group-containing dicarboxylic acids such as maleic acid, fumaric acid, and itaconic acid. Of these, ⁇ , ⁇ -unsaturated acids such as acrylic acid and methacrylic acid are preferred.
  • One type of hydrophilic monomer may be used, or two or more types may be combined.
  • the resin having a hydrophobic monomer unit and a hydrophilic monomer unit include styrene-acrylic acid-alkyl acrylate copolymer, styrene-acrylic acid copolymer, styrene-maleic acid copolymer, styrene- Maleic acid-acrylic acid alkyl ester copolymer, styrene-methacrylic acid copolymer, styrene-methacrylic acid-acrylic acid alkyl ester copolymer, styrene-maleic acid half ester copolymer, vinylnaphthalene-acrylic acid copolymer Vinyl naphthalene-maleic acid copolymer and the like.
  • Examples of commercially available products include JONCRYL series such as JONCRYL586 (manufactured by BASF), JONCRYL67 (manufactured by BASF), and JONCRYL819 (manufactured by BASF).
  • the resin having a hydrophobic monomer unit and a hydrophilic monomer unit is preferably a resin having at least an acrylic acid unit or a methacrylic acid unit as a hydrophilic monomer unit.
  • the acidic group derived from an acidic group-containing monomer such as acrylic acid or methacrylic acid in the anionic dispersant is preferably partially or completely neutralized with a base component.
  • a neutralizing base alkali metal-containing bases (for example, sodium hydroxide, potassium hydroxide, etc.) and amines (for example, ammonia, alkanolamine, alkylamine, etc.) can be used.
  • neutralization with amines having a boiling point of less than 200 ° C. is preferable from the viewpoint of improving image durability.
  • the acid value of the anionic dispersant is preferably 10 mgKOH / g or more and 300 mgKOH / g or less, more preferably 10 mgKOH / g or more and 150 mgKOH / g or less.
  • the acid value of the anionic dispersant is the number of milligrams of potassium hydroxide (mgKOH / g) required to neutralize the acidic component contained in 1 g of the anionic dispersant; it can be measured by measuring the acid value according to JISK0070. it can.
  • A (B ⁇ f ⁇ 5.611) / S (In the formula, A is the acid value of the resin (mgKOH / g), B is the amount (ml) of 0.1 mol / L potassium hydroxide ethanol solution used for titration, and f is 0.1 mol / liter potassium hydroxide ethanol solution.
  • Factor, S is the mass of resin (g), 5.611 is 1/10 of the formula weight of potassium hydroxide (56.11 / 10))
  • the weight average molecular weight of the anionic dispersant is preferably 3000 to 30000, and more preferably 7000 to 20000 from the viewpoints of ink dispersion stability, ejection stability, and ease of handling.
  • the glass transition temperature (Tg) of the anionic dispersant is preferably ⁇ 30 ° C. to 100 ° C., and more preferably ⁇ 20 ° C. to 80 ° C.
  • anionic dispersant examples include Jonkrill 67, 586, and 819 (above, water-soluble polymer compound manufactured by BASF).
  • the content of the anionic dispersant is preferably 0.5% by mass or more and 10% by mass or less, and more preferably 1% by mass or more and 6% by mass or less with respect to the whole ink.
  • the mass ratio of the disperse dye to the anionic dispersant is preferably from 100/150 to 100/15, more preferably from 100/100 to 100/20 for the disperse dye / anion dispersant. By being within the above range, it is possible to have good dispersion stability and ejection stability.
  • the ink of the present invention may contain a water-soluble solvent.
  • Inkjet images are formed by ejecting minute droplets from minute head nozzles, but inkjet nozzles do not always eject ink.
  • the solvent in the solvent evaporates to increase the viscosity or the solid component precipitates, the ejection becomes unstable or nozzle clogging occurs. Discharge instability and nozzle clogging have a great influence on image formation by inkjet.
  • the influence is particularly great in the one-pass method in which the head does not move left and right.
  • the type and amount of organic solvent can be selected.
  • water-soluble organic solvents examples include Alcohols (eg, methanol, ethanol, propanol, isopropanol, butanol, isobutanol, sec-butanol, t-butanol, etc.); Polyhydric alcohols (eg, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, butylene glycol, hexanediol, pentanediol, glycerin, hexanetriol, thiodiglycol, etc.); Amines (eg, ethanolamine, diethanolamine, triethanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, morpholine, N-ethylmorpholine, ethylenediamine, diethylenediamine, triethylenetetramine, tetraethylenepentamine, polyethyleneimine, pen
  • the content of the water-soluble organic solvent is preferably 10% by mass or more based on the whole ink from the viewpoint of improving the ejection stability, and maintaining the storage stability and dispersion stability of the dye due to excessive water-soluble organic solvent, and From the viewpoint of suppressing excessive back surface permeability, it is preferably less than 60% by mass. A more preferable range is 20% by mass or more and less than 45% by mass.
  • the water-soluble organic solvent preferably contains a polyhydric alcohol from the viewpoint of improving ejection stability, and more preferably contains ethylene glycol.
  • the content of ethylene glycol is preferably 25% by mass or more and 55% by mass or less, and preferably 30% by mass or more and 45% by mass or less with respect to the entire ink. More preferably.
  • the ink-jet ink according to the present invention may further contain a surfactant, an antiseptic agent, an antifungal agent and the like as necessary.
  • surfactants include dialkyl sulfosuccinates, alkyl naphthalene sulfonates, polyoxyethylene alkyl ethers, polyoxyethylene alkyl allyl ethers, acetylene glycols, polyoxyethylene / polyoxypropylene block copolymers, alkyls
  • examples include amine salts, quaternary ammonium salts, silicone surfactants other than the compounds represented by formula (1) or (2), or fluorine surfactants.
  • the content of the surfactant is preferably adjusted so that the surface tension of the ink is 25 to 60 mN / m. Specifically, it may be about 0.0001 to 5% by mass with respect to the whole ink.
  • preservatives or antifungal agents examples include aromatic halogen compounds (eg, Preventol® CMK), methylene dithiocyanate, halogen-containing nitrogen sulfur compounds, 1,2-benzisothiazolin-3-one (eg, PROXELGXL) and the like. included.
  • the viscosity at 25 ° C. of the inkjet ink according to the present invention is preferably 1 to 40 mPa ⁇ s, more preferably 5 to 40 mPa ⁇ s, from the viewpoint of obtaining ink ejection stability, and 5 to 20 mPa ⁇ s. More preferably, it is s.
  • the viscosity of the ink can be measured with an E-type viscometer at 25 ° C. and 1 rpm. Further, the surface tension of the ink at 25 ° C. is preferably 25 to 60 mN / m.
  • the pH of the ink is not particularly limited, but is preferably 6 or more, more preferably in the range of 7-9. From the viewpoint of improving the surface concentration, it is preferable to lower the pH of the pretreatment agent than the pH of the ink.
  • the inkjet ink according to the present invention can be manufactured by an arbitrary method, for example, through a process of obtaining a dispersion by dispersing a disperse dye with a dispersant and a process of preparing an ink using the dispersion.
  • the inkjet textile printing method includes (1) a step (pretreatment step) of applying a pretreatment agent to the fabric in order to prevent ink bleeding. 2) a step of ejecting ink-jet ink droplets onto the fabric to which the pretreatment agent has been applied and soaking the ink (image forming step); and (3) a step of pre-drying the ink-jet ink droplets that have landed on the fabric ( A preliminary drying step) and (4) a step of fixing the dye of the ink-jet ink landed on the fabric to the fiber (coloring step). Further, it may include (5) a step of removing dyes and pretreatment agents that could not be fixed to the fabric (washing step), and (6) a step of drying the washed fabric (drying step) as necessary. .
  • An inkjet textile printing method includes a step of ejecting at least a droplet of the inkjet ink according to the present invention from the recording head and depositing the droplet on the recording medium, and a step of recording the droplet deposited on the recording medium. Fixing to a medium.
  • the recording medium has a property of absorbing an aqueous medium (absorbability of the aqueous medium). Absorptivity refers to the property that an aqueous medium adhering to a recording medium penetrates into the recording medium while spreading both in the direction along the surface of the recording medium and in the thickness direction of the recording medium.
  • the aqueous medium in which the recording medium exhibits absorbency may be the same as or different from the aqueous medium in the ink.
  • the recording medium can be selected from recording media that have absorbency and can be used in textile printing.
  • the recording medium may be, for example, a sheet or a model formed of fibers, and the material of the fibers is appropriately selected as long as the effect of the present embodiment is obtained.
  • the recording medium is, for example, a fabric.
  • the fabric is composed of fibers that can be dyed with disperse dyes.
  • fabrics are applicable to fibers that can be dyed with disperse dyes.
  • polyester fibers such as polyethylene terephthalate, cationic dyeable polyester fibers, acetate fibers, diacetate fibers, triacetate fibers, Examples include polylactic acid fibers.
  • the thickness of the fibers constituting the fabric is preferably 10 to 100d. Also, the thickness of the fabric is not particularly limited, but is preferably 3 mm or less and more preferably 1 mm or less from the viewpoint of fabric strength and back surface permeability.
  • the pretreatment step is a step of treating the fabric with a pretreatment agent in advance in order to prevent ink bleeding on the fabric and obtain a clear image.
  • the pretreatment method is not particularly limited, and a method suitable for the material and ink of the fabric can be appropriately selected from conventionally known methods. For example, a method of applying a pretreatment agent to a fabric by a pad method, a coating method, a spray method or the like can be mentioned.
  • the applied amount (squeezing ratio) of the pretreatment agent may be, for example, 0.2% by mass to 90% by mass with respect to the total mass of the fabric, although it depends on the type of fabric and its application.
  • the pretreatment agent contains at least one selected from a water-soluble polymer, a water-soluble metal salt, a polycation compound, a surfactant, a water repellent, and a pH adjuster, preferably a water-soluble polymer.
  • the water-soluble polymer can be a natural water-soluble polymer or a synthetic water-soluble polymer.
  • natural water-soluble polymers include starches such as corn and wheat, cellulose derivatives such as carboxymethylcellulose, methylcellulose and hydroxyethylcellulose; polysaccharides such as sodium alginate, guar gum, tamarind gum, locust bean gum and gum arabic; Protein substances such as gelatin, casein and keratin are included.
  • Examples of the synthetic water-soluble polymer include polyvinyl alcohol, polyvinyl pyrrolidone, acrylic acid polymer and the like.
  • water-soluble metal salts include inorganic salts or organic acid salts such as alkali metals or alkaline earth metals.
  • examples of the polycation compound include polymers or oligomers of various quaternary ammonium salts, polyamine salts, and the like.
  • water-soluble metal salts and polycation compounds there are those that change the color tone of the fabric or reduce the light fastness, and therefore it is preferable to select them according to the type of the fabric.
  • surfactant examples include anionic, cationic, amphoteric and nonionic ones.
  • anionic surfactants include higher alcohol sulfates and sulfonates of naphthalene derivatives;
  • examples of cationic surfactants include quaternary ammonium salts;
  • amphoteric surfactants examples of the agent include imidazoline derivatives and the like;
  • examples of the nonionic surfactant include polyoxyethylene alkyl ether, polyoxyethylene propylene block polymer, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, and acetylene alcohol. Ethylene oxide adducts and the like are included.
  • water repellents examples include silicon water repellents, fluorine water repellents, and wax water repellents.
  • water-soluble polymers and surfactants are preferably stable even in a high-temperature environment so as not to cause tarring or other stains when coloring at high temperature after image formation.
  • the water-soluble polymer and the surfactant are preferably those that can be easily removed from the fabric by a cleaning treatment after color formation at a high temperature after image formation.
  • the pretreatment agent further includes a pH adjusting agent.
  • the pH adjuster is preferably an acid, and specific examples thereof include citric acid, malic acid, tartaric acid and the like. By adding an acid as a pH adjuster to the pretreatment agent, a clear image can be formed at a higher density.
  • the pH of the pretreatment agent is not particularly limited, but the effect of the present invention can be better exhibited by using a pH lower than the pH of the ink.
  • the pretreatment agent may further contain optional components such as a reduction inhibitor, a chelating agent, a preservative, and a softening agent as necessary.
  • a reduction inhibitor such as sodium m-nitrobenzenesulfonate.
  • chelating agents include aminopolycarboxylates, hydroxycarboxylates, polycarboxylates, ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid, diethylenetriaminepentaacetic acid, and the like.
  • the preservative may be the same as the preservative exemplified for the ink, or may be the same.
  • the image forming step is a step of forming a pre-colored image by discharging droplets of the inkjet ink according to the present invention from the inkjet recording head toward the fabric. Ink droplets are ejected and landed on the fabric while moving the fabric relative to a head carriage on which a plurality of inkjet recording heads are mounted. The ink droplets for each color may be ejected separately or simultaneously. From the standpoint of suppressing bleeding of the pre-colored image, the fabric may be heated as necessary when forming the image.
  • the preliminary drying step is a step of preliminary drying ink jet ink droplets that have landed on a recording medium such as a fabric. After the image forming process and the preliminary drying process, it is wound up, stored, transported, and may be a coloring process and a washing process in another machine. Therefore, preliminary drying is performed so as not to cause color transfer during winding. In the preliminary drying step, for example, drying is performed at 110 ° C. to 130 ° C. for 2 minutes.
  • the color development step is a step in which a dye in an image before a color development reaction that is not sufficiently dyed in the fabric is dyed on the fabric to develop the original hue of the ink.
  • the method may be a conventionally known method, for example, a steaming method, an HT steaming method, an HP steaming method, a thermofix method, an alkali pad steam method, an alkali blotch steam method, an alkali shock method, or an alkali cold fix method. Etc., and is appropriately selected depending on the ink or the fabric.
  • the polyester fiber is preferably treated at 160 to 180 ° C. for 5 to 10 minutes when subjected to high temperature steam with an HT steamer; about 30 at 130 to 140 ° C. when subjected to high pressure steam with an HP steamer. It is preferable that the treatment is performed for a minute.
  • the fabric on which the image before the color development reaction is formed may be colored immediately or may be colored after a lapse of time.
  • the washing step is a step of removing dyes and pretreatment agents that could not be dyed on the fabric after the color development step of the fabric.
  • a conventionally known water-washing method, soaping method, or the like can be used, and is appropriately selected depending on the type of the ink-jet ink or fabric.
  • a cloth mainly composed of polyester fibers can be generally washed with a mixed solution of caustic soda, a surfactant and hydrosulfite.
  • the drying process is a process performed after the washing process and drying the washed fabric.
  • the drying method is not particularly limited, the washed fabric is squeezed, dried, or dried using a dryer (heat roll, iron, etc.).
  • the fabric printed by the above-described method has less bleeding and forms an image having good back surface permeability.
  • FIG. 1 is a diagram schematically showing an example of the configuration of the ink jet textile printing apparatus according to the present embodiment.
  • the inkjet textile printing apparatus 10 includes four inkjet head units 11 corresponding to yellow, magenta, cyan, and black colors, and a conveyor belt for continuously supplying a fabric 100 as a recording medium. And having.
  • An arrow X in FIG. 1 indicates the conveyance direction of the fabric 100.
  • FIG. 2A is a diagram schematically illustrating the configuration of the inkjet head unit 11 when viewed in plan
  • FIG. 2B is a diagram schematically illustrating the configuration of the inkjet head unit 11 as viewed from the side
  • FIG. 2C is a diagram schematically illustrating the configuration of the inkjet head unit 11 when viewed from the front.
  • each of the inkjet head units 11 includes a plurality of inkjet heads 111 arranged in two rows along the width direction of the fabric indicated by the arrow Y, and humidified air to the fabric 100. And a blowout port 112 for blowing out. All of the inkjet head units 111 are fixed on the transport belt.
  • the inkjet heads 111 are arranged so as to partially overlap each other in the Y direction, and are arranged without any gaps as a whole.
  • the outlet 112 is a duct having an elongated rectangular opening that extends from the center in the Y direction along the Y direction, and corresponds to a humidifier.
  • the outlet 112 is disposed upstream of the inkjet head 111 in the X direction and extends to a range at least overlapping with all the inkjet heads 111 in the Y direction.
  • the inkjet head 111 has, for example, an ink chamber (not shown), a pressure chamber, and a nozzle, and is connected to an ink tank that stores ink of each color.
  • the outlet 112 is connected to a humidifier (not shown), for example.
  • the conveyor belt is arranged at an endless adhesive belt 21, a support roll 22 and a conveyor roll 23 that support the adhesive belt 21, and a position between the conveyor roll 23 and the adhesive belt 21.
  • Nip roll 24 The adhesive belt 21 has adhesiveness on the surface on which the fabric 100 is placed.
  • the conveyance roll 23 is configured to be driven to rotate freely, and the support roll 22 is arranged to be rotatable. Further, the nip roll 24 is disposed so as to be able to approach and separate from the transport roll 23.
  • the fabric 100 When the conveying belt is driven, the fabric 100 is continuously conveyed in the X direction.
  • the fabric 100 is pre-treated by applying a pre-treatment liquid and drying it.
  • the fabric 100 is supplied with humidified air of, for example, 25 ° C. and 70 RH% at 2 m / s from the outlet 112 of the inkjet head unit 11 on the upstream side.
  • humidified air By supplying humidified air, the surface of the fabric 100 is moistened to the same extent as when ink droplets land.
  • the first ink is ejected from the inkjet head 111 to the wetted portion of the fabric 100. Similar humidification and second and subsequent ink ejections are also performed in the inkjet head 111 on the downstream side.
  • the ink of the desired color is ejected to the fabric 100 only once through the inkjet head unit 11, and a desired image is formed on the surface of the fabric 100.
  • the fabric 100 on which an image is formed as described above is subjected to the above-described preliminary drying, coloring, washing, and drying steps.
  • the transport speed of the recording medium is not particularly limited, but is preferably 20 to 80 m / min from the viewpoint of high speed recording.
  • the above-described inkjet ink may be loaded into the above-described inkjet printing apparatus to form an inkjet printing system.
  • disperse dye solution 15% by mass of the dispersant aqueous solution was added to and mixed with a mixture of 45% by mass of ion-exchanged water and 20% by mass of ethylene glycol.
  • the disperse dye C.I. I. Disperse Blue 60 was added in an amount of 20% by mass, premixed, and then dispersed using a sand grinder filled with 50% by volume of 0.5 mm zirconia beads to obtain a dispersed dye solution having a dye solid content of 20% by mass. It was 0.15 micrometer when the Z average particle diameter of the dispersed particle of the obtained disperse dye liquid was measured with the dynamic light-scattering-method particle size distribution analyzer Zetasizer nano S (made by Malvern).
  • ink No. 1 27.6% by mass of ion-exchanged water, 35% by mass of ethylene glycol, 7% by mass of glycerin, 0.2% by mass of proxel GXL (an antifungal agent, Lonza), 5% by mass of polyethylene glycol having a weight average molecular weight of 600
  • 25% by mass of the disperse dye solution was added to a mixed solution in which 0.2% by mass of KF-351A (surfactant Shin-Etsu Chemical Co., Ltd.) was added, and the mixture was stirred and then filtered through a 1 ⁇ m filter. Is 100 parts by mass. 1 was obtained.
  • a polyester fabric having a thread thickness of 50d is pre-treated soaked in a carboxymethylcellulose aqueous solution, squeezed and dried, and prepared using a one-pass tester, using each ink prepared above, 100 mm ⁇ 100 mm After printing on the fabric and pre-drying at 120 ° C. for 2 minutes, treated by the HT steaming method at 175 ° C. for 10 minutes, washed with water, and at 80 ° C. with a 0.2% hydrosulfite aqueous solution. Reduction cleaning was performed, followed by thorough washing with water and drying.
  • the conveyance speed of the fabric as the recording medium was 20 m / min.
  • the inkjet ink for printing, the inkjet printing method, and the inkjet printing that can improve the permeability to the back surface of the recording medium such as the fabric and the density of the surface of the recording medium such as the fabric even in the high-speed recording.
  • Fabrics printed by the method and inkjet printing systems can be provided.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Coloring (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Ink Jet (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)

Abstract

L'objectif de la présente invention concerne une encre pour jet d'encre pour impression, un procédé d'impression à jet d'encre, un tissu imprimé par un procédé d'impression à jet d'encre et un système d'impression à jet d'encre, qui permettent : d'améliorer la perméabilité à la surface verso d'un support d'enregistrement, tel qu'un tissu, et la densité à la surface d'un support d'enregistrement, tel qu'un tissu, même dans un enregistrement à grande vitesse; d'améliorer la stabilité au stockage et la stabilité à la décharge d'une encre pour jet d'encre; et d'améliorer les performances de séchage d'un support d'enregistrement, tel qu'un tissu. Le but susmentionné est atteint par une encre pour jet d'encre contenant du polyalkylèneglycol, un colorant dispersé et un agent de dispersion anionique, l'encre pour jet d'encre étant caractérisée en ce que le poids moléculaire pondéral moyen du polyalkylèneglycol vaut 400-1000.
PCT/JP2016/053410 2015-02-06 2016-02-04 Encre pour jet d'encre, procédé d'impression à jet d'encre, tissu imprimé par un procédé d'impression à jet d'encre et système d'impression à jet d'encre WO2016125869A1 (fr)

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
WO2018221235A1 (fr) * 2017-05-30 2018-12-06 Dic株式会社 Encre, article imprimé et procédé de fabrication d'un article imprimé
JP2019023373A (ja) * 2017-07-21 2019-02-14 有限会社フラッグ タナカ 染色物の製造方法及び染色物
US20220032627A1 (en) * 2020-08-03 2022-02-03 Konica Minolta, Inc. Inkjet printing apparatus

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WO2013132439A1 (fr) * 2012-03-05 2013-09-12 Landa Corporation Ltd. Formulations d'encre pour jet d'encre
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JP2014070181A (ja) * 2012-09-28 2014-04-21 Fujifilm Corp 捺染用着色組成物、捺染方法、及び布帛
WO2014129323A1 (fr) * 2013-02-21 2014-08-28 紀和化学工業株式会社 Encre pour impression par jet d'encre et procédé de coloration
JP2014198777A (ja) * 2013-03-29 2014-10-23 富士フイルム株式会社 フタロシアニン化合物、着色組成物、捺染方法、及び布帛
JP2014224215A (ja) * 2013-05-17 2014-12-04 コニカミノルタ株式会社 インクジェット用ブラックインク、インクジェットインクセット、インクジェット捺染方法およびそれにより製造された捺染物
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JPS61118474A (ja) * 1984-11-14 1986-06-05 Canon Inc インクジエツト記録用インク組成物
JP2006124854A (ja) * 2004-10-27 2006-05-18 Konica Minolta Holdings Inc インクジェット捺染方法
WO2007102455A1 (fr) * 2006-03-06 2007-09-13 Nippon Kayaku Kabushiki Kaisha Encre d'impression a jet d'encre et procede d'impression a jet d'encre l'utilisant
JP2011162692A (ja) * 2010-02-10 2011-08-25 Fujifilm Corp インク組成物及び画像形成方法
JP2011194613A (ja) * 2010-03-17 2011-10-06 Fujifilm Corp 画像形成方法及びインクセット
WO2013132439A1 (fr) * 2012-03-05 2013-09-12 Landa Corporation Ltd. Formulations d'encre pour jet d'encre
WO2014017082A1 (fr) * 2012-07-23 2014-01-30 コニカミノルタ株式会社 Assortiment d'encres à impression pour jet d'encre
JP2014070181A (ja) * 2012-09-28 2014-04-21 Fujifilm Corp 捺染用着色組成物、捺染方法、及び布帛
WO2014129323A1 (fr) * 2013-02-21 2014-08-28 紀和化学工業株式会社 Encre pour impression par jet d'encre et procédé de coloration
JP2014198777A (ja) * 2013-03-29 2014-10-23 富士フイルム株式会社 フタロシアニン化合物、着色組成物、捺染方法、及び布帛
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018221235A1 (fr) * 2017-05-30 2018-12-06 Dic株式会社 Encre, article imprimé et procédé de fabrication d'un article imprimé
JPWO2018221235A1 (ja) * 2017-05-30 2019-06-27 Dic株式会社 インク、印刷物及び印刷物の製造方法
JP2019023373A (ja) * 2017-07-21 2019-02-14 有限会社フラッグ タナカ 染色物の製造方法及び染色物
US20220032627A1 (en) * 2020-08-03 2022-02-03 Konica Minolta, Inc. Inkjet printing apparatus

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