WO2020112112A1 - Impression textile - Google Patents

Impression textile Download PDF

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Publication number
WO2020112112A1
WO2020112112A1 PCT/US2018/063043 US2018063043W WO2020112112A1 WO 2020112112 A1 WO2020112112 A1 WO 2020112112A1 US 2018063043 W US2018063043 W US 2018063043W WO 2020112112 A1 WO2020112112 A1 WO 2020112112A1
Authority
WO
WIPO (PCT)
Prior art keywords
thermally curable
ink composition
curable ink
pigment
light source
Prior art date
Application number
PCT/US2018/063043
Other languages
English (en)
Inventor
Ronald A. Askeland
Blair A. Butler
Jie Zheng
Dennis Z. Guo
Original Assignee
Hewlett-Packard Development Company, L.P.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett-Packard Development Company, L.P. filed Critical Hewlett-Packard Development Company, L.P.
Priority to PCT/US2018/063043 priority Critical patent/WO2020112112A1/fr
Priority to US17/266,964 priority patent/US20210310188A1/en
Publication of WO2020112112A1 publication Critical patent/WO2020112112A1/fr

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Classifications

    • 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
    • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2066—Thermic treatments of textile materials
    • D06P5/2077—Thermic treatments of textile materials after dyeing
    • 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
    • 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
    • D06P5/002—Locally enhancing dye affinity of a textile material by chemical means
    • 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
    • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2066—Thermic treatments of textile materials
    • 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
    • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2066—Thermic treatments of textile materials
    • D06P5/2083—Thermic treatments of textile materials heating with IR or microwaves
    • 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
    • D06P5/30—Ink jet printing

Definitions

  • FIGs. 3A and 3B are schematic diagram of different examples of a printing system disclosed herein;
  • Fig. 10A depicts black and white reproductions of originally colored photographs of first example inks printed on cotton both before and after washing, where each print included a control region (untreated control) and an example region (treated with 395 nm UV LED);
  • Fig. 11 B depicts black and white reproductions of originally colored photographs of the second example inks printed on cotton both before and after washing, where each comparative print was treated with a heat press;
  • the pigment that is included in the thermally curable inkjet ink is capable of absorbing ultraviolet radiation having a wavelength ranging from about 10 nm to about 400 nm, infrared radiation having a wavelength ranging from about 760 nm to about 1 mm, or both ultraviolet and infrared radiation.
  • Solid pigments may be incorporated into the aqueous ink vehicle, or they may be part of a pigment dispersion that is incorporated into the aqueous ink vehicle.
  • the pigment dispersion may include a pigment and a separate dispersant, or may include a self-dispersed pigment. Whether separately dispersed or self-dispersed, the pigment can be any of a number of primary or secondary colors, or black or white.
  • the pigment may be any color, including, as examples, a cyan pigment, a magenta pigment, a yellow pigment, a black pigment, a violet pigment, a green pigment, a brown pigment, an orange pigment, a purple pigment, a white pigment, or combinations thereof.
  • the pigment is present in the thermally curable inkjet ink in an amount ranging from about 1 wt% active to about 6 wt% active of the total weight of the thermally curable inkjet ink. In another example, the pigment is present in the thermally curable inkjet ink in an amount ranging from about 1.5 wt% active to about 4 wt% active of the total weight of the thermally curable inkjet ink.
  • the thermally curable inkjet ink also includes a polymeric binder.
  • the polymeric binder are selected from the group consisting of a polyester- polyurethane binder, a polyether-polyurethane binder, a polycarbonate-polyurethane binder, and a latex binder. In other example, hybrids of any of these binders may be used.
  • IMPRANIL® DLN-SD or other similar anionic aliphatic polyester-polyurethane binders can include pentyl glycols (e.g., neopentyl glycol); C 4 to C 0 alkyldiol (e.g., hexane-1 ,6- diol); C 4 to C 0 alkyl dicarboxylic acids (e.g., adipic acid); C 4 to Cio alkyl diisocyanates (e.g., hexamethylene diisocyanate (HDI)); diamine sulfonic acids (e.g., 1 -[(2- aminoethyl)amino]-ethanesulfonic acid); etc.
  • pentyl glycols e.g., neopentyl glycol
  • C 4 to C 0 alkyldiol e.g., hexane-1 ,6- diol
  • polyester-polyurethane binders disclosed herein may have a weight average molecular weight (Mw, g/mol) ranging from about 20,000 to about 300,000.
  • the polyester-polyurethane binders disclosed herein may have an acid number that ranges from about 1 mg/ g KOH to about 50 mg/g KOH.
  • the term“acid number” refers to the mass of potassium hydroxide (KOH) in milligrams that is used to neutralize one gram of the sulfonated polyester-polyurethane binder.
  • the acid number of the sulfonated polyester-polyurethane binder can range from about 1 mg KOH/g to about 200 mg KOH/g, from about 2 mg KOH/g to about 100 mg KOH/g, or from about 3 mg KOH/g to about 50 mg KOH/g.
  • the polyester-polyurethane binder has a weight average molecular weight (g/mol) ranging from about 20,000 to about 300,000 and an acid number ranging from about 1 mg KOH/g to about 50 mg KOH/g.
  • the average particle size of the polyester-polyurethane binders disclosed herein may range from about 20 nm to about 500 nm.
  • the sulfonated polyester-polyurethane binder can have an average particle size ranging from about 20 nm to about 500 nm, from about 50 nm to about 350 nm, or from about 100 nm to about 250 nm.
  • the particle size of any solids herein, including the average particle size of the dispersed polymer binder can be determined using a NANOTRAC® Wave device, from Microtrac, e.g., NANOTRAC® Wave II or NANOTRAC® 150, etc, which measures particles size using dynamic light scattering. Average particle size can be determined using particle size distribution data generated by the NANOTRAC® Wave device.
  • polycarbonate-polyurethane binder examples include IMPRANIL® DLC-F or IMPRANIL® DL 2077 (Covestro (Germany)); or HYDRAN® WLS-213 (DIC Corp. (Japan)); or
  • a multi-phase latex polymer can be prepared that includes a first heteropolymer and a second heteropolymer.
  • the two heteropolymers can be physically separated in the latex particles, such as in a core-shell configuration, a two-hemisphere configuration, smaller spheres of one phase distributed in a larger sphere of the other phase, interlocking strands of the two phases, and so on.
  • the first heteropolymer phase can be polymerized from two or more aliphatic (meth)acrylate ester monomers or two or more aliphatic (meth)acrylamide monomers.
  • the second heteropolymer phase can be polymerized from a
  • cycloaliphatic monomer such as a cycloaliphatic (meth)acrylate monomer or a cycloaliphatic (meth)acrylamide monomer.
  • the first or second heteropolymer phase can include the aromatic (meth)acrylate monomer, e.g., phenyl, benzyl, naphthyl, etc.
  • the aromatic (meth)acrylate monomer can be a phenoxylalkyl
  • the second heteropolymer phase can have a higher T g than the first heteropolymer phase in one example.
  • the first heteropolymer composition may be considered a soft polymer composition and the second heteropolymers composition may be considered a hard polymer composition.
  • heteropolymer(s) or copolymer(s) can include a number of various types of copolymerized monomers, including
  • aliphatic(meth)acrylate ester monomers such as linear or branched aliphatic
  • the weight average molecular weight (g/mol) of the latex polymer can be from 50,000 to 500,000, for example.
  • the acid number of the latex polymer can be from 2 mg KOH/g to 40 mg KOH/g, from 2 mg KOH/g to 30 mg KOH/g, or 3 mg KOH/g to 26 mg KOH/g, or 4 mg KOH/g to 20 mg KOH/g, for example.
  • the latex polymer can be in acid form, such as in the form of a polymer with (meth)acrylic acid surface groups, or may be in its salt form, such as in the form of a polymer with poly(meth)acrylate groups.
  • the polymeric binder (prior to being incorporated into the thermally curable inkjet ink) may be dispersed in water alone or in combination with an additional water soluble or water miscible co-solvent, such as those described for the pigment dispersion. It is to be understood however, that the liquid components of the binder dispersion become part of the aqueous liquid vehicle in the thermally curable inkjet ink.
  • thermally curable inkjet ink also include a wax.
  • suitable waxes include those that are commercially available from
  • Lubrizol such as LIQUILUBETM 411 , LIQUILUBETM 405, LIQUILUBETM 488,
  • LIQUILUBETM 443, and LIQUILUBETM 454 from Michelman, such as ME80825, ME48040, ME98040M1 , ME61335, ME90842, ME91240, and ML160; from Keim- Additec, such as ULTRALUBE® E-521/20, ULTRALUBE® E-7093, ULTRALUBE® 7095/1 , ULTRALUBE® E-8046, ULTRALUBE® E-502V, and ULTRALUBE® E-842N, or from BYK, such as AQUACER® 2650, AQUACER® 507, AQUACER® 533,
  • the thermally curable inkjet ink includes the aqueous ink vehicle.
  • the vehicle consists of water and the co-solvent, the anti-kogation agent, the anti-decel agent, the surfactant, the biocide, a pH adjuster, or a combination thereof.
  • the vehicle consists of the anti-kogation agent, the anti-decel agent, the surfactant, the biocide, a pH adjuster, and water.
  • the vehicle consists of water and the co-solvent, the anti-kogation agent, the surfactant, the chelating agent, the biocide, a pH adjuster, or a combination thereof.
  • CRODAFOSTM 03A or CRODAFOSTM N-3A dextran 500k.
  • Other suitable examples of the anti-kogation agents include CRODAFOSTM HCE (phosphate-ester from Croda Int. ), CRODAFOS® N10 (oleth-10-phosphate from Croda Int.), or DISPERSOGEN® LFH (polymeric dispersing agent with aromatic anchoring groups, acid form, anionic, from Clariant), etc.
  • An example of a suitable anti-decel agent is ethoxylated glycerin having the following formula:
  • dodecylbenzenesulfonate isopropylnaphthalenesulfonate, monobutylphenylphenol monosulfonate, monobutylbiphenyl sulfonate, monobutylbiphenylsul fonate, and dibutylphenylphenol disulfonate.
  • non-ionic surfactant may include polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, glycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene alkylamine, polyoxyethylene fatty acid amide, alkylalkanolamide, polyethylene glycol
  • non-ionic surfactant may include silicon surfactants such as a polysiloxane oxyethylene adduct; fluorine surfactants such as perfluoroalkylcarboxylate, perfluoroalkyl sulfonate, and oxyethyleneperfluoro alkylether; and biosurfactants such as spiculisporic acid, rhamnolipid, and lysolecithin.
  • silicon surfactants such as a polysiloxane oxyethylene adduct
  • fluorine surfactants such as perfluoroalkylcarboxylate, perfluoroalkyl sulfonate, and oxyethyleneperfluoro alkylether
  • biosurfactants such as spiculisporic acid, rhamnolipid, and lysolecithin.
  • Suitable commercially available surfactants include SURFYNOL® 465 (ethoxylatedacetylenic diol), SURFYNOL® 440 (an ethoxylated low-foam wetting agent) SURFYNOL® CT- 211 (now CARBOWET® GA-211 , non-ionic, alkylphenylethoxylate and solvent free), and SURFYNOL® 104 (non-ionic wetting agent based on acetylenic diol chemistry), (all of which are from Air Products and Chemicals, Inc.); ZONYL® FSO (a.k.a.
  • biocides examples include the NUOSEPT® (Ashland Inc.), UCARCIDETM or KORDEKTM or ROCIMATM (Dow Chemical Co.), PROXEL® (Arch Chemicals) series, ACTICIDE® B20 and ACTICIDE® M20 and ACTICIDE® MBL (blends of 2-methyl-4-isothiazolin-3-one (MIT), 1 ,2-benzisothiazolin-3-one (BIT) and Bronopol) (Thor Chemicals), AXIDETM (Planet Chemical), NIPACIDETM (Clariant), blends of 5-chloro-2-methyl-4-isothiazolin-3-one (CIT or CMIT) and MIT under the tradename KATHONTM (Dow Chemical Co.), and combinations thereof.
  • NUOSEPT® Ashland Inc.
  • UCARCIDETM or KORDEKTM or ROCIMATM Low Chemical Co.
  • PROXEL® Arch Chemicals
  • suitable pH adjusters include metal hydroxide bases, such as potassium hydroxide (KOH), sodium hydroxide (NaOH), etc.
  • the metal hydroxide base may be added to the thermal inkjet ink in an aqueous solution.
  • the metal hydroxide base may be added to the thermal inkjet ink in an aqueous solution including 5 wt% of the metal hydroxide base (e.g., a 5 wt% potassium hydroxide aqueous solution).
  • the pre-treatment composition include the multivalent metal salt without the cationic polymer.
  • the multivalent metal salt includes a multivalent metal cation and an anion.
  • the multivalent metal salt includes a multivalent metal cation selected from the group consisting of a calcium cation, a magnesium cation, a zinc cation, an iron cation, an aluminum cation, and combinations thereof; and an anion selected from the group consisting of a chloride anion, an iodide anion, a bromide anion, a nitrate anion, a carboxylate anion, a sulfonate anion, a sulfate anion, and combinations thereof.
  • the multivalent metal salt (containing the multivalent metal cation) may be present in any suitable amount.
  • the metal salt is present in an amount ranging from about 2 wt% to about 15 wt% based on a total weight of the pre-treatment composition.
  • the metal salt is present in an amount ranging from about 4 wt% to about 12 wt%; or from about 5 wt% to about 15 wt%; or from about 6 wt% to about 10 wt%, based on a total weight of the pre-treatment composition.
  • composition has a weight average molecular weight (g/mol) of 100,000 or less. This molecular weight enables the cationic polymer to be printed by thermal inkjet printheads.
  • the weight average molecular weight of the cationic polymer ranges from about 800 to about 40,000. It is expected that a cationic polymer with a weight average molecular weight higher than 100,000 can be used for examples of the pre-treatment composition applied by piezoelectric printheads and analog methods.
  • the cationic polymer may have a weight average molecular weight higher than 100,000, such as, for example, up to 600,000.
  • Examples of the cationic polymer are selected from the group consisting of poly(diallyldimethylammonium chloride); poly(methylene-co-guanidine) anion, wherein the anion is selected from the group consisting of hydrochloride, bromide, nitrate, sulfate, and sulfonates; a polyamine; and poly(dimethylamine-co-epichlorohydrin).
  • the cationic polymer is present in an amount ranging from about 1 wt% active to about 10 wt% active based on a total weight of the pre-treatment composition. In further examples, the cationic polymer is present in an amount ranging from about 4 wt% active to about 8 wt% active; or from about 2 wt% active to about 7 wt% active; or from about 6 wt% active to about 10 wt% active, based on a total weight of the pre-treatment composition.
  • the multivalent metal cation is used in combination with the cationic polymer.
  • aqueous pre-treatment vehicle may refer to the liquid fluid in which the multivalent metal salt, or the cationic polymer, or the
  • multivalent metal salt in combination with the cationic polymer is/are mixed to form the pre-treatment composition.
  • co-solvents include polyhydric alcohols or simple carbohydrates (e.g., trehalose).
  • co-solvent(s) may include alcohols (e.g., diols), ketones, ketoalcohols, ethers (e.g., the cyclic ether tetrahydrofuran (THF), and others, such as thiodiglycol, sulfolane, 2-pyrrolidone, 1 -(2-hydroxyethyl)-2-pyrrolidone,1 ,3-dimethyl-2- imidazolidinone and caprolactam; glycols such as ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol,
  • the total amount of the co-solvent(s) may be present in the pre-treatment composition in an amount ranging from about 5 wt% to about 25 wt% based on a total weight of the pre-treatment composition. The amounts in this range may be particularly suitable for the composition when it is to be dispensed from a thermal inkjet printhead. In another example, the total amount of the co-solvent(s) may be present in the pre-treatment composition in an amount ranging from about 10 wt% to about 18 wt% based on a total weight of the pre-treatment composition. The co-solvent amount may be increased to increase the viscosity of the pre-treatment composition for a high viscosity piezoelectric printhead.
  • An example of the pre-treatment composition further comprises an additive selected from the group consisting of a surfactant, a chelating agent, a buffer, a biocide, and combinations thereof.
  • non-ionic surfactants that can be used in the formulation of the pre-treatment composition include ethoxylated alcohols/secondary alcohol ethoxylates such as those from the TERGITOL® series (e.g., TERGITOL® 15-S-30, TERGITOL® 15-S-9, TERGITOL® 15-S-7), manufactured by Dow Chemical; surfactants from the SURFYNOL® series (e.g., SURFYNOL® SE-F (i.e.
  • a self-emulsifiable wetting agent based on acetylenic diol chemistry SURFYNOL® 440 and SURFYNOL® 465 (i.e., ethoxylated 2,4,7,9-tetramethyl 5 decyn-4,7-diol)) manufactured by Evonik Industries, and the DYNOLTM series (e.g., DYNOLTM 607 and DYNOLTM 604) manufactured by Air Products and Chemicals, Inc.; fluorinated surfactants, such as those from the ZONYL® family (e.g., ZONYL® FSO and ZONYL® FSN surfactants), manufactured by E.l.
  • fluorinated surfactants such as those from the ZONYL® family (e.g., ZONYL® FSO and ZONYL® FSN surfactants), manufactured by E.l.
  • alkoxylated surfactants such as TEGO® Wet 510 manufactured from Evonik
  • fluorinated POLYFOX® non-ionic surfactants e.g., PF159 non-ionic surfactants
  • silicone surfactants such as those from BYK® 340 series (e.g., BYK® 345, BYK® 346, BYK® 347, BYK® 348, BYK® 349) manufactured by BYK Chemie; or combinations thereof.
  • buffers examples include TRIS
  • the pH of the pre-treatment composition can be less than 7. In some examples, the pH ranges from pH 1 to pH 7, from pH 3 to pH 7, from pH 4.5 to pH 7, etc.
  • the inkjet pre-treatment composition consists of the listed components and no additional components (such as water soluble polymers, water repellent agents, etc.).
  • the inkjet pre-treatment composition comprises the listed components, and other components that do not deleteriously affect the jettability of the fluid via a thermal- or piezoelectric inkjet printhead may be added.
  • Examples of the pre-treatment composition disclosed herein may be used in a thermal inkjet printer or in a piezoelectric printer to pre-treat a textile substrate.
  • the viscosity of the pre-treatment composition may be adjusted for the type of printhead that is to be used, and the viscosity may be adjusted by adjusting the co-solvent level and/or adding a viscosity modifier.
  • the pre-treatment composition includes the multivalent metal salt in an amount ranging from about 5 wt% to about 15 wt% based on the total weight of the pre-treatment composition; an additive selected from the group consisting of a non-ionic surfactant, a chelating agent, an antimicrobial agent, and combinations thereof; and the aqueous vehicle, which includes water and an organic solvent (e.g., the co-solvent).
  • an additive selected from the group consisting of a non-ionic surfactant, a chelating agent, an antimicrobial agent, and combinations thereof
  • the aqueous vehicle which includes water and an organic solvent (e.g., the co-solvent).
  • the textile fabric is selected from the group consisting of cotton fabrics, cotton blend fabrics, nylon fabrics, nylon blend fabrics, polyester fabrics, polyester blend fabrics, silk fabrics, silk blend fabrics, spandex, spandex blend fabrics, rayon, and rayon blend fabrics.
  • textile fabric is selected from the group consisting of cotton fabrics and cotton blend fabrics. Blends may include the listed material in combination with one or more other material(s).
  • An example of a tri-blend includes cotton, polyester and spandex.
  • organic textile fabrics and/or inorganic textile fabrics may be used for the textile fabric.
  • Some types of fabrics that can be used include various fabrics of natural and/or synthetic fibers.
  • Example synthetic fibers used in the textile fabric/substrate can include polymeric fibers such as nylon fibers, polyvinyl chloride (PVC) fibers, PVC-free fibers made of polyester, polyamide, polyimide, polyacrylic, polypropylene, polyethylene, polyurethane, polystyrene, polyaramid (e.g., Kevlar®) polytetrafluoroethylene (Teflon®) (both trademarks of E.l. du Pont de
  • PVC polyvinyl chloride
  • PVC-free fibers made of polyester, polyamide, polyimide, polyacrylic, polypropylene, polyethylene, polyurethane, polystyrene, polyaramid (e.g., Kevlar®) polytetrafluoroethylene (Teflon®) (both trademarks of E.l. du Pont de
  • the fiber can be a modified fiber from the above-listed polymers.
  • modified fiber refers to one or both of the polymeric fiber and the fabric as a whole having undergone a chemical or physical process such as, but not limited to, copolymerization with monomers of other polymers, a chemical grafting reaction to contact a chemical functional group with one or both the polymeric fiber and a surface of the fabric, a plasma treatment, a solvent treatment, acid etching, or a biological treatment, an enzyme treatment, or antimicrobial treatment to prevent biological degradation.
  • the terms“textile fabric” or“fabric substrate” do not include materials commonly known as any kind of paper (even though paper can include multiple types of natural and synthetic fibers or mixtures of both types of fibers).
  • Fabric substrates can include textiles in filament form, textiles in the form of fabric material, or textiles in the form of fabric that has been crafted into finished articles (e.g., clothing, blankets, tablecloths, napkins, towels, bedding material, curtains, carpet, handbags, shoes, banners, signs, flags, etc.).
  • the fabric substrate can have a woven, knitted, non-woven, or tufted fabric structure.
  • the fabric substrate can be a woven fabric where warp yarns and weft yarns can be mutually positioned at an angle of about 90°.
  • This woven fabric can include fabric with a plain weave structure, fabric with twill weave structure where the twill weave produces diagonal lines on a face of the fabric, or a satin weave.
  • the fabric substrate can be a knitted fabric with a loop structure.
  • the loop structure can be a warp-knit fabric, a weft-knit fabric, or a combination thereof.
  • a warp-knit fabric refers to every loop in a fabric structure that can be formed from a separate yarn mainly introduced in a longitudinal fabric direction.
  • a weft-knit fabric refers to loops of one row of fabric that can be formed from the same yarn.
  • the fabric substrate can be a non-woven fabric.
  • the non-woven fabric can be a flexible fabric that can include a plurality of fibers or filaments that are one or both bonded together and interlocked together by a chemical treatment process (e.g., a solvent treatment), a mechanical treatment process (e.g., embossing), a thermal treatment process, or a combination of multiple processes.
  • Fig. 1 depicts an example of the printing method 100.
  • an example the printing method 100 comprises: applying a thermally curable ink composition on a fabric substrate, the thermally curable ink composition including: from about 1 wt% active to about 6 wt% active of a pigment that absorbs ultraviolet radiation, infrared radiation, or a combination thereof, based on a total weight of the thermally curable ink composition; from about 2 wt% active to about 20 wt% active of a polymeric binder, based on a total weight of the thermally curable ink composition; and an aqueous ink vehicle (reference numeral 102); and selectively heating the pigment of the thermally curable ink composition applied on the fabric substrate by exposing the fabric substrate to an emission wavelength from a narrow wavelength light source for a total exposure time of 3 seconds or less, thereby thermally fixing the pigment to the fabric substrate (reference numeral 104).
  • the phrase“total exposure time” refers to the total time that the fabric having the ink printed thereon is exposed to the emission wavelength.
  • the total exposure time may take place during a single event where the light source is turned on (i.e., light source on event).
  • the total exposure time may take place over a series of light source on events that are shorter in duration than the total exposure time and whose sum equals the total exposure time.
  • light source on events may be separated by light source off events, during which the light source is turned off and the fabric is not exposed to the emission wavelength.
  • the total time to achieve pigment fixation is longer than the total exposure time due to the time periods when the light source is off. However, in these examples, the total exposure time is still 3 seconds or less because the fabric is not exposure to the light emission during the off events.
  • thermally curable ink composition may be used in the examples of the method 100.
  • textile fabric may also be used in the examples of the method 100.
  • the thermally curable ink composition may be ejected onto the textile fabric using any suitable applicator, such as a thermal inkjet printhead, a piezoelectric printhead, a continuous inkjet printhead, etc.
  • the applicator may eject the thermally curable ink composition in a single pass or in multiple passes.
  • single pass printing the cartridge(s) of an inkjet printer deposit the desired amount of the ink composition during the same pass of the cartridge(s) across the textile fabric.
  • the cartridge(s) of an inkjet printer deposit the desired amount of the ink composition over several passes of the cartridge(s) across the textile fabric.
  • the thermally curable ink composition is applied via analog methods, such as screen printing, spraying, roll-coating, cylindrical pad printing, etc.
  • the narrow wavelength light source is a light emitting diode having an emission wavelength ranging from about 10 nm to about 400 nm.
  • the narrow wavelength ultraviolet light source is a light emitting diode having an emission wavelength ranging from about 365 nm to about 395 nm.
  • the narrow wavelength ultraviolet light source is a 395 nm light emitting diode.
  • the narrow wavelength light source is a light emitting diode having an emission wavelength ranging from about 760 nm to about 1 mm.
  • the method 100 may include setting the narrow wavelength light source to a power setting ranging from about 3.5 W/cm 2 to about 10 W/cm 2
  • the power setting may depend, in part, upon the light source used, the total time for exposure, the distance between the light source and the textile fabric, etc. Higher power settings may be desirable for faster throughput systems.
  • the energy (radiant) exposure ranges from about 2 J/cm 2 to about 28 J/cm 2 In a specific example, if a power of 10 W/cm 2 is applied for 1 second, the applied energy is 10 J/cm 2 .
  • the pigment in the printed ink absorbs the ultraviolet light or infrared light and heats up to its fixation temperature.
  • the narrow wavelength light source thermally cures the thermally curable ink composition disclosed herein within 3 seconds or less, and effectively fixes the pigment to the textile fabric without traditional UV curing
  • the desired amount of the thermally curable ink composition is deposited in a single pass or in multiple passes, and then selective heating occurs.
  • the application of the thermally curable ink composition occurs prior to the selectively heating, and the selectively heating involves intermittent light source on events and light source off events.
  • the narrow wavelength light source is turned on, and during light source off events, the narrow wavelength light source is turned off.
  • the intermittent on and off events can effectively heat the pigment in the printed ink to its fixation temperature without overheating the pigment.
  • the light source on events may range from about 0.1 second to about 1.5 seconds.
  • the desired amount of the thermally curable ink composition is deposited in multiple passes, and selective heating occurs after each pass.
  • the applying of the thermally curable ink composition is accomplished in multiple print passes, and the method 100 further includes exposing the fabric substrate to the narrow wavelength light source after each print pass for a time less than the total exposure time.
  • the time for exposing the fabric substrate to the narrow wavelength light source after each print pass ranges from about 0.1 second to about 1.5 seconds. Since the total exposure time is 3 seconds or less, the duration of the exposure after each pass will depend upon the number of passes and the desired total exposure time. For example, when the ink is to be deposited in two printing passes and the total exposure time is 2 seconds, each of the exposures may take place for 1 second.
  • warming and/or cooling of the textile fabric may take place before and/or concurrently with UV and/or IR radiation exposure.
  • some examples of the method 100 include warming or cooling the fabric substrate having the thermally curable ink composition thereon at a temperature below a fixation temperature of the thermally curable ink composition: i) before the
  • Warming may be accomplished with a heat source that is positioned above the textile fabric (e.g., an infrared heating lamp that provides radiative
  • the temperature at which the fabric substrate is warmed ranges from about 60°C to about 100°C. In another example, the temperature at which the textile fabric is warmed ranges from about 70°C to about 90°C. It is to be understood that this warming temperature range may vary, depending upon, e.g., the fixation temperature of the thermally curable ink. For example, if the fixation temperature of an ink were 160°C, the warming temperature may be any suitable temperature below 160°C.
  • warming or cooling may be accomplished with any suitable bulk temperature control mechanism.
  • the warming or cooling takes place for an amount of time ranging from about 0.1 seconds to about 30 seconds. In another example, the warming or cooling takes place for an amount of time ranging from about 0.1 seconds to about 3 seconds. It is to be understood that this warming or cooling time range may vary, depending upon, e.g., the temperature at which warming or cooling takes place and whether warming or cooling is accomplished prior to and/or concurrently with the UV and/or IR radiation exposure. For example, if warming or cooling occurs concurrently with UV and/or IR radiation exposure, the time for warming or cooling may range from about 0.1 second up to 3 seconds.
  • the time for warming may be longer, e.g., up to 30 seconds. It is to be further understood that examples of the method 100 may be accomplished without warming/pre-heating or without cooling.
  • Fig. 2 depicts another example of the printing method 200.
  • the printing method 200 comprises: applying a pre-treatment composition on a fabric substrate, the pre-treatment composition including: a fixing agent selected from the group consisting of a multivalent metal cation, a cationic polymer, and a combination of the multivalent metal cation and the cationic polymer; and an aqueous pre-treatment vehicle (reference numeral 202); applying a thermally curable ink composition on the fabric substrate, the thermally curable ink composition including: from about 1 wt% active to about 6 wt% active of a pigment that absorbs ultraviolet radiation, infrared radiation, or a combination thereof, based on a total weight of the thermally curable ink composition; from about 2 wt% active to about 20 wt% active of a polymeric binder, based on a total weight of the thermally curable ink composition; and an aqueous ink vehicle (reference numeral 202 ).
  • the pre-treatment composition may be used in the examples of the method 200.
  • the pre treatment composition may be applied digitally using inkjet technology.
  • the pretreatment composition can also be applied to fabric substrates via analog methods, e.g., spraying, roll-coating, cylindrical pad printing, etc. With these analog methods, the pre-treatment composition is applied to the entire fabric substrate.
  • the narrow wavelength light source is a light emitting diode having an emission wavelength ranging from about 10 nm to about 400 nm.
  • the narrow wavelength ultraviolet light source is a light emitting diode having an emission wavelength ranging from about 365 nm to about 395 nm.
  • the narrow wavelength ultraviolet light source is a 395 nm light emitting diode.
  • the narrow wavelength light source is a light emitting diode having an emission wavelength ranging from about 760 nm to about 1 mm.
  • the pigment in the printed ink absorbs the ultraviolet or infrared light and heats up to its fixation temperature. As such, exposure to the narrow wavelength light source fixes the ink on the textile fabric.
  • the multivalent metal salt in the pre-treatment composition also interacts with pigment in the ink directly on the fabric substrate, which helps fix the pigment and improve the optical density.
  • the number of light source on events will depend upon the duration of each on event and the desired total exposure time. For example, when each light source on event is 1 second long, a total of three light source on events may take place so that the total exposure time is 3 seconds. A higher number of light source on events may be used when the on events are shorter in duration.
  • the light source off events may be long enough to allow the pigments to cool without allowing the pigments to return to their pre-exposure temperature.
  • the thermally curable ink composition is printed onto the printed pre-treatment composition while the pre-treatment composition is wet.
  • Wet on wet printing may be desirable because less pre-treatment composition may be applied during this process (as compared to when the pre-treatment composition is dried prior to ink application), and because the printing workflow may be simplified without the additional drying.
  • the thermally curable ink composition is printed onto the printed pre-treatment composition within a period of time ranging from about 0.01 second to about 30 seconds after the printed pre-treatment composition is printed.
  • the thermally curable ink composition is printed onto the previously applied pre-treatment composition within a period of time ranging from about 0.1 second to about 20 seconds; or from about 0.2 second to about 10 seconds; or from about 0.2 second to about 5 seconds after the previously applied composition is printed. Wet on wet printing may be accomplished in a single pass.
  • drying takes place after the application of the pre-treatment composition and before the application of the thermally curable ink composition. It is to be understood that in this example, drying of the pre-treatment composition may be accomplished in any suitable manner, e.g., air dried (e.g., at a temperature ranging from about 20°C to about 80°C for 30 seconds to 5 minutes), or by exposure to heat via any suitable heat source (e.g. for 3 seconds or less), and/or the like.
  • air dried e.g., at a temperature ranging from about 20°C to about 80°C for 30 seconds to 5 minutes
  • any suitable heat source e.g. for 3 seconds or less
  • FIGs. 3A and 3B schematic diagrams of two different printing systems 10, 10’ including inkjet printheads 12, or 12 and 14, or 12’, or 12’ and 14’ and a narrow wavelength light source 18 or 18’.
  • the example system 10 shown in Fig. 3A illustrates a system for single pass printing and selective heating
  • the example system 10’ shown in Fig. 3B illustrates a system for multiple pass printing and single or multiple pass selective heating.
  • the textile fabric/ fabric substrate 20 may be transported through the printing system 10 along the path shown by the arrow 22.
  • a pagewide printhead 12 i.e. , a series of printheads extending the width of the fabric substrate 20
  • a single color or multiple colors of the thermally curable ink composition 24 is/are inkjet printed directly onto fabric substrate 20 by the pagewide printhead 12 to form an ink layer.
  • the color(s), amount(s), and arrangement of the thermally curable ink composition(s) 24 that is/are applied depend upon the digital image from which the print is being generated.
  • some examples of the printing system 10 further include the inkjet printhead 14, which contains and dispenses the pre-treatment composition 28.
  • inkjet printhead 14 is a pagewide printhead that is in a fixed position relative to the fabric substrate 20.
  • an example of the pre-treatment composition 28 disclosed herein is inkjet printed directly onto fabric substrate 20.
  • the fabric substrate 20 is then moved to be exposed to printing and selective heating, While not shown, it is to be understood that the inkjet printhead 14 could be replaced with a mechanism that will apply the pre-treatment composition 28 in accordance with an analog method.
  • the mechanism could be an in-line or off-line sprayer, roll coater, etc.
  • a dryer may be positioned between the printheads 14 and 12 to dry the pre-treatment composition before the thermally curable inkjet ink is applied thereon.
  • Exposure to the UV and/or IR radiation may occur after the multiple printing passes, or between each of the multiple printing passes.
  • the narrow wavelength light source 18’ is attached to a carriage (not shown) or other mechanism that moves the narrow wavelength light source 18’ relative to the fabric substrate 20 in the path shown by the arrow 32.
  • the total exposure time is 3 seconds or less, whether exposure takes place in a single pass or multiple passes.
  • some examples of the printing system 10’ further include the inkjet printhead 14’, which contains and dispenses the pre-treatment composition 28.
  • inkjet printhead 14’ is a printhead that is attached to a carriage (not shown) or other mechanism that moves the printhead 14’ relative to the fabric substrate 20 in the path shown by the arrow 32.
  • a carriage not shown
  • an example of the pre-treatment composition 28 disclosed herein is inkjet printed directly onto fabric substrate 20.
  • the printhead 12’ and the narrow wavelength radiation source 18’ are then moved to print and
  • inkjet printhead 14’ could be replaced with a mechanism that will apply the pre-treatment composition 28 in accordance with an analog method.
  • the mechanism could be an in-line or off-line sprayer, roll coater, etc.
  • the multiple pass printing and single or multiple pass selective heating performed using the printing system 10’ results in the printed article 30 on the fabric substrate 20.
  • the heat absorbed by the pigment is sufficient to bind the pigment onto the fabric substrate 20.
  • the heat to initiate fixation may range from about 100°C to about 200°C.
  • the fabric substrates used were cotton and nylon.
  • a pre-treatment composition, a cyan thermally curable ink, and a black thermally curable ink were used.
  • the pre-treatment composition is shown in Table 1 and the cyan and black thermally curable ink compositions are shown in Table 2.
  • composition was printed on the respective fabric substrates, and 3 drops per pixel of either the black ink or the cyan ink was printed on the pre-treatment composition.
  • the inks were printed in two passes - 1 ⁇ 2 of the ink in the first pass and 1 ⁇ 2 of the ink in the other pass.
  • the example print swaths on the cotton fabric were exposed to 6 exposures of 500 msec each, with a total energy of 19.87 J/cm 2 .
  • the example print swaths on the nylon fabric were exposed to 2 exposures of 100 msec each, with a total energy of 1.32 J/cm 2 .
  • UV radiation exposure took place after each of the ink passes.
  • each of the example print swaths, comparative example print swaths, and the control print swaths was washed 5 times in a Kenmore 90 Series Washer (Model 110.289 227 91 ) with warm water (at about 40°C) and detergent. Each print was allowed to air dry between each wash.
  • Photographs were taken of the swaths after washing to visibly compare the washfastness of the control, example, and comparative examples swaths. The results, which are reproduced in black and white, are shown in Figs. 4 through 7.
  • a control swath was generated next to an example swath, and another example swath was generated next to a comparative example swath.
  • Table 3 provides a key for Figs. 4 and 5, which show the various swaths printed on cotton.
  • Table 4 provides a key for Figs. 6 and 7, which show the various swaths printed on nylon.
  • the black example print swath E1 printed on cotton and exposed to LED heating exhibited much better washfastness than the control black C1 , and exhibited slightly better washfastness than the black comparative example print swath CE1 printed on cotton and exposed to the heat press and the black comparative example print swath CE2 printed on cotton and exposed to both LED and the heat press.
  • the cyan example print swath E2 printed on cotton and exposed to LED heating exhibited much better washfastness than the control cyan C2, and exhibited slightly better washfastness than the cyan comparative example print swath CE3 printed on cotton and exposed to the heat press and the cyan comparative example print swath CE4 printed on cotton and exposed to both LED and the heat press.
  • the black example print swath E3 printed on nylon and exposed to LED heating exhibited much better washfastness than the control black C3, and exhibited comparable or slightly better washfastness than the black
  • the cyan example print swath E4 printed on nylon and exposed to LED heating exhibited much better washfastness than the control cyan C4, and exhibited comparable or slightly better washfastness than the cyan comparative example print swath CE7 printed on nylon and exposed to the heat press and the cyan comparative example print swath CE8 printed on nylon and exposed to both LED and the heat press.
  • the example binder included in four of the example ink compositions was IMPRANIL® DLN-SD (an anionic aliphatic polyester- polyurethane binder, CAS# 375390-41-3; Mw 45,000 Mw; Acid Number 5.2; Tg -47°C; Melting Point 175-200°C) from Covestro.
  • IMPRANIL® DLN-SD an anionic aliphatic polyester- polyurethane binder, CAS# 375390-41-3; Mw 45,000 Mw; Acid Number 5.2; Tg -47°C; Melting Point 175-200°C
  • Table 4 The general formulation of these four example ink compositions is shown in Table 4, with the wt% active of each component that was used.
  • the weight percentage of the pigment dispersion represents the total pigment solids (i.e.
  • the amount of the pigment dispersion added to the example ink compositions was enough to achieve a pigment solids level equal to the given weight percent.
  • the weight percentage of the binder represents the total binder solids (i.e., wt% active binder) present in the final ink formulations.
  • the example binder included in another four of the example ink compositions was a latex polymer binder.
  • the general formulation of these four example ink compositions is shown in Table 6, with the wt% active of each component that was used.
  • compositions (referred to as“ example 3 black,”“example 3 cyan,”“example 3 magenta,” and“example 3 yellow”) was another type of latex polymer binder.
  • the general formulation of these four example ink compositions is shown in Table 7, with the wt% active of each component that was used.
  • the post-treatment that was performed on each region of a first set of prints is schematically shown in Fig. 9.
  • Fig. 9 For these prints, there were two control regions and an example region.
  • the control regions at the left and right of each print
  • no post treatment or curing was performed (this region is labeled“untreated control” in Figs. 9- 12 and Tables 8 and 9).
  • the example region at the middle of each print
  • the print was exposed to ultraviolet light for 1 second from a 395 nm light emitting diode operated at 50% energy (this region is labeled“LED exposed” in Fig. 9 and Tables 8 and 9 and“LED395, 50% energy, 1 sec” in Figs. 10A, 11 A, and 12A).
  • the light source emitted 6.62 W/cm 2 .
  • the post-treatment that was performed on a second set of prints involved exposure to the heat press at 150°C for about 3 minutes.
  • each region or print is identified by the example ink composition, and the post-treatment (if any) used to generate the region or print.
  • the prints were also tested for washfastness.
  • the L * a * b * values of a color e.g., cyan, magenta, yellow, black, red, green, blue, white
  • L * is lightness
  • a * is the color channel for color opponents green-red
  • b * is the color channel for color opponents blue-yellow.
  • the color change was then calculated using both the CIEDE1976 color-difference formula and the CIEDE2000 color-difference formula.
  • the CIEDE1976 color-difference formula is based on the CIELAB color space. Given a pair of color values in CIELAB space the CIEDE1976 color difference between them is as follows:
  • each region or print is identified by the example ink composition, and the post-treatment (if any) used to generate the region or print.
  • the DE 76 value of the regions of the prints exposed to ultraviolet light were at least 26% less than the DE 76 value of the same color print that was exposed to the heat press at 150°C for 3 minutes.
  • Table 9 further shows, for the prints generated with the“example 2” ink compositions, the DE 0 o value of the regions of the prints exposed to ultraviolet light were less than or comparable to the DE 0 o value of the region of the same color print that was exposed to the heat press at 150°C for 3 minutes.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

La présente invention porte, dans un exemple, sur un procédé d'impression textile, selon lequel une composition d'encre thermodurcissable est appliquée sur un substrat de tissu. La composition d'encre thermodurcissable comprend entre environ 1 % en poids actif et environ 6 % en poids actif d'un pigment qui absorbe le rayonnement ultraviolet, le rayonnement infrarouge ou une combinaison de ceux-ci, sur la base du poids total de la composition d'encre thermodurcissable ; entre environ 2 % en poids actif et environ 20 % en poids actif d'un liant polymère, sur la base du poids total de la composition d'encre thermodurcissable ; et un véhicule d'encre aqueuse. Dans le procédé, le pigment de la composition d'encre thermodurcissable est chauffé de manière sélective sur le substrat de tissu en exposant le substrat de tissu à une longueur d'onde d'émission provenant d'une source de lumière à longueur d'onde étroite pendant un temps d'exposition total égal ou inférieur à 3 secondes. Le chauffage sélectif fixe thermiquement le pigment au substrat de tissu.
PCT/US2018/063043 2018-11-29 2018-11-29 Impression textile WO2020112112A1 (fr)

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WO2021262162A1 (fr) * 2020-06-24 2021-12-30 Hewlett-Packard Development Company, L.P. Ensemble de fluides pour impression textile

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US20130113868A1 (en) * 2010-07-29 2013-05-09 Alex Veis Inkjet printing apparatus and a method for printing ultraviolet (uv) curable ink
US20160297224A1 (en) * 2015-04-10 2016-10-13 Electronics For Imaging, Inc. Removable ultraviolet curable dye sublimation inks

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US20130113868A1 (en) * 2010-07-29 2013-05-09 Alex Veis Inkjet printing apparatus and a method for printing ultraviolet (uv) curable ink
US20160297224A1 (en) * 2015-04-10 2016-10-13 Electronics For Imaging, Inc. Removable ultraviolet curable dye sublimation inks

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WO2021262162A1 (fr) * 2020-06-24 2021-12-30 Hewlett-Packard Development Company, L.P. Ensemble de fluides pour impression textile

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