CN113022185A - Production process of water-based digital ink-jet transfer printing intermediate medium - Google Patents
Production process of water-based digital ink-jet transfer printing intermediate medium Download PDFInfo
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- 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
- B41M5/0082—Digital printing on bodies of particular shapes
- B41M5/0088—Digital printing on bodies of particular shapes by ink-jet printing
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- 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
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/382—Contact thermal transfer or sublimation processes
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- 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
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
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- 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
- C09D109/00—Coating compositions based on homopolymers or copolymers of conjugated diene hydrocarbons
- C09D109/06—Copolymers with styrene
- C09D109/08—Latex
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- 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
- C09D111/00—Coating compositions based on homopolymers or copolymers of chloroprene
- C09D111/02—Latex
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- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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- 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
- C09D139/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Coating compositions based on derivatives of such polymers
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- 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
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/02—Polyamines
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- 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
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09D179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
- C08K2003/3063—Magnesium sulfate
Abstract
The invention discloses a production process of a water-based digital ink-jet transfer printing intermediate medium, and relates to the technical field of printing and dyeing consumables. The production process of the water-based digital ink-jet transfer printing intermediate medium comprises the following steps: a water-based interfacial release layer and a water-based ink-bearing layer are coated on the surface of an intermediate transfer medium support. After the intermediate transfer medium obtained by the production process is digitally spray-printed and sprayed with the high-molecular hot-melt adhesive powder, the effects of shaking coarse powder and fine powder are excellent, so that the powder does not adhere to the periphery of the transferred pattern, and the obtained pattern has high color fastness and strong weather resistance.
Description
Technical Field
The invention relates to the technical field of printing and dyeing consumables, in particular to a production process of a water-based digital ink-jet transfer printing intermediate medium.
Background
Thermal transfer printing typically involves printing/jet printing an ink onto a film-based or paper support surface having a single/multi-layer functional coating, and then transferring the ink to a textile fiber fabric in a mirror-inverted fashion under heat and pressure. At present, the thermal transfer printing is mainly thermal sublimation transfer printing and thermosetting transfer printing. The thermosetting transfer printing technology using a film material (usually a coppery type ironing film) coated with functional coatings such as a release layer is rapidly developed due to the characteristics of wide range of applicable textile fiber materials (including cotton, nylon, high-elastic fabrics, chemical fiber fabrics and the like), bright color, soft hand feeling and the like.
The prior known technology mainly adopts a release film/a Keye film as an intermediate transfer medium support body, and a single-layer/multi-layer functional coating is coated to realize thermal transfer printing. Patent CN109334292A discloses an inkjet transfer printing method for personalized printing of textiles. The method adopts a PP release film as an intermediary transfer medium support body, an aqueous microporous structure inking layer is coated on the surface of the PP release film, color ink and transparent/white ink are subjected to ink-jet printing to form a surface ink layer, hot-melt powder resin is scattered on the surface of the PP release film after the ink layer is subjected to ink-jet printing, and the PP release film is attached to a printing stock and subjected to hot stamping after being dried. However, this technique employs a PP support coated with an organic solvent type release agent. Patent CN105538941A discloses a thermal transfer printing method. The method comprises the steps of printing an ink absorption coating, an ink jet printing layer, a screen printing nano layer and a white transfer printing layer on release paper, then scattering hot melt adhesive powder, and drying to obtain the transfer printing release paper for thermal transfer printing. The ink absorbing coating has limited adsorption capacity to color ink and white ink, is easy to generate ink flowing phenomenon, and adopts screen printing to cause complicated manual alignment, especially small characters are difficult to realize alignment. Patent CN104077959B discloses a forming process and a forming device for a Korotkoff type thermal transfer trademark, wherein a release layer is coated on a PET film, a four-color printer is adopted to print an ink layer, and a screen printer is adopted to sequentially print a white ink layer, an elastic permeable layer and a hot melt adhesive layer. However, in the technology, the release layer needs to be coated at least three times, and the white ink and the hot melt adhesive layer need to be printed three times, so that the cost is high and the operation is complex.
Disclosure of Invention
Based on the above, the invention aims to overcome the defects of the prior art and provide a production process of a water-based digital ink-jet transfer printing intermediate medium suitable for medium and large-scale production.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a production process of a water-based digital ink-jet transfer printing intermediate medium comprises the following steps: a water-based interfacial release layer and a water-based ink-bearing layer are coated on the surface of an intermediate transfer medium support.
The water-based interfacial release layer and water-based ink-bearing layer compositions used herein are each water-soluble/dispersible compounds. Organic dispersion media such as toluene, xylene and butanone are not needed to be used as solvents, so that the environment-friendly energy-saving.
Preferably, the water-based interfacial release layer comprises the following components in parts by weight: 30-90 parts of interface stripping agent, 0-10 parts of catalyst, 1-10 parts of adhesion agent, 0.2-5 parts of flatting agent, 0.2-2 parts of defoaming agent and 0.1-2 parts of preservative. Further preferably, the water-based interface release layer comprises the following components in parts by weight: 40-80 parts of interface stripping agent, 3-8 parts of catalyst, 2-6 parts of adhesion agent, 0.5-3 parts of flatting agent, 0.5-1 part of defoaming agent and 0.1-0.5 part of preservative. The inventors of the present application have found through extensive research that the interfacial remover, the catalyst and the adhesion agent have better effects within the above component selection range.
Preferably, the water-based digital ink-jet transfer intermediate medium is produced by at least one of the following processes (a) to (f):
(a) the interface stripping agent is at least one of PE wax emulsion, polysiloxane emulsion and fluorine-silicon emulsion;
(b) the catalyst is a platinum catalyst or an organic tin catalyst;
(c) the adhesion agent is at least one of modified organic siloxane, polyurethane and acrylate;
(d) the leveling agent is at least one of polyether modified siloxane, water-based acrylate copolymer and fluorocarbon modified acrylate polymer;
(e) the defoaming agent is organic modified polysiloxane or fatty alcohol emulsion;
(f) the preservative is pyrithione or isothiazolinone.
Further preferably, the interface release agent is a silicone emulsion; the catalyst is a platinum catalyst; the adhesion agent is acrylate. The inventor of the application finds that the effect is better when the selection is adopted through a large amount of researches. The preferred polysiloxane emulsion as the interface release agent is based on the characteristics of small critical surface tension, high melting temperature, good chemical stability and the like; the optimized platinum is used as the catalyst and is based on the characteristics of good chemical stability, strong durability, high curing efficiency and the like; the preferable acrylate is used as the adhesion agent based on the characteristics of good compatibility, strong adhesion to the intermediate transfer medium support body and the like.
Preferably, the ink bearing layer comprises the following components in parts by weight: 1-15 parts of inorganic filler, 5-40 parts of color fixing agent, 5-30 parts of latex adhesive, 0.2-5 parts of flatting agent, 1-5 parts of thickening agent, 0.2-2 parts of defoaming agent and 0.1-2 parts of preservative. Further preferably, the ink bearing layer comprises the following components in parts by weight: 5-15 parts of inorganic filler, 10-25 parts of color fixing agent, 10-20 parts of latex adhesive, 1-3 parts of flatting agent, 1-3 parts of thickening agent, 0.5-1 part of defoaming agent and 0.1-0.5 part of preservative. The inventor of the application finds that the effect is better within the selection range of the components through a great deal of research.
Preferably, the water-based digital ink-jet transfer intermediate medium is produced by at least one of the following processes (a) to (g):
(a) the inorganic filler is at least one of silicon dioxide, calcium carbonate and kaolin;
(b) the color fixing agent is at least one of polyethyleneimine, polyalkenyl amine chloride and inorganic metal salt compounds; the inorganic metal salt compound is at least one of calcium chloride, magnesium sulfate and aluminum sulfate;
(c) the latex adhesive is at least one of cationic neoprene latex, cationic acrylate copolymer emulsion, cationic styrene-butadiene latex and cationic polyurethane;
(d) at least one of leveling agent polyether modified siloxane, water-based acrylate copolymer and fluorocarbon modified acrylate polymer;
(e) the thickener is at least one of nonionic polyurethane, guar gum, gum arabic, polyvinyl alcohol and polyacrylic acid;
(f) the defoaming agent is organic modified polysiloxane or fatty alcohol emulsion;
(g) the preservative is pyrithione or isothiazolinone.
The latex adhesive selected by the invention has film forming property, has certain interface adhesive force (usually main valence force) to a support body after being dried, and has good compatibility and anchoring effect to each composition of the coating. The color fixing agent selected by the invention can quickly absorb a large amount of solvent in the ink when the color ink and the white ink are sprayed, thereby effectively solving the problems of ink hanging and ink flowing.
Further preferably, the latex-based binder is a cationic acrylate copolymer emulsion or a cationic polyurethane. The preferred cationic acrylate copolymer emulsion or cationic polyurethane as the latex binder is based on its good compatibility, low VOc content, strong film forming ability, and the like.
Preferably, the intermediate transfer medium support is a paper-based material or a film-based material; wherein the paper-based material or the film-based material is a high-temperature resistant material (higher than 120 ℃); the paper base material is at least one of release base paper, laminating paper and glassine paper, and the film base material is at least one of polyethylene terephthalate thermal transfer film, polyethylene naphthalate thermal transfer film and polyamide thermal transfer film.
Preferably, the coating method of the present invention is not particularly limited, and may be conventionally known curtain coating, air knife coating, blade coating, bar coating, film transfer, slit coating, slide coating, and the like.
Preferably, the total coating weight of the water-based interface release layer and the water-based ink bearing layer is 2-10g/m in terms of dry solid component per single side2. Further preferably, the total coating amount of the water-based interface release layer and the water-based ink bearing layer is 3-7g/m in terms of dry solid component per single side2。
In addition, the invention provides the water-based digital ink-jet transfer intermediate medium prepared by the production process of the water-based digital ink-jet transfer intermediate medium.
Further, the invention provides application of the water-based digital ink-jet transfer printing intermediate medium in the field of pyrograph films.
Compared with the prior art, the invention has the beneficial effects that:
(1) the conventional paper base or heat-resistant film base can be used as an intermediate transfer medium support body, and the film (such as a Ke-type pyrograph film) containing a plurality of functional coatings such as a release layer and the like is not limited, so that the application range of the transfer printing film is widened, and the use cost of the transfer printing film is reduced.
(2) The production process of the digital transfer printing intermediate transfer printing medium only needs to coat the surface of the support body of the intermediate transfer printing medium with the water-based interface stripping layer and the water-based ink bearing layer, so that the required thermocuring time is short, the production process is simple and the effect is obvious; and each composition of the coating has good compatibility and good stability, can be coated by adopting the conventional curtain type, air knife, scraper, film transfer and other modes, has convenient operation and low difficulty, and is suitable for medium-scale and large-scale production.
(3) The interface stripping layer and the ink bearing layer are both water-soluble/water-dispersible compounds, organic dispersion media such as toluene, xylene and butanone are not needed to be used as solvents, and therefore, the ink bearing layer has the advantages of low load on environment, energy conservation and environmental protection.
(4) The components and the proportion of the color fixing agent in the ink bearing layer composition are regulated and controlled, so that a large amount of solvent in the ink can be quickly absorbed when the color ink and the white ink are sprayed, and the problems of ink hanging, ink flowing and the like are effectively solved.
(5) After the intermediate transfer medium obtained by the production process is subjected to digital spray printing and high-molecular hot-melt adhesive powder scattering, the effects of shaking coarse powder and fine powder are excellent, so that the powder does not adhere to the periphery of the transferred pattern, and the obtained pattern is high in color fastness and weather resistance.
Drawings
FIG. 1 is a graph comparing the powder adhesion of example 5 and comparative example 2; wherein (a1) is a sticky powder case diagram of comparative example 2; (b1) is a graph of the powder sticking condition of example 5;
FIG. 2 is a graph comparing cracking of the printed inks of example 5 and comparative example 3; wherein (a2) is the print pattern cracking diagram of example 5; (b2) the printed pattern cracking pattern of comparative example 3;
FIG. 3 is a comparative graph showing peeling of the release layers of example 5 and comparative example 2; wherein (a3) is the release layer peel pattern of example 5; (b3) is a release layer peel-off view of comparative example 2;
FIG. 4 is a comparison of inkjet color/white inks for example 5 and comparative example 4; wherein (a4) is the inkjet printed color/white ink image of example 5; (b4) the jet printed color/white ink pattern of comparative example 4.
Detailed Description
To better illustrate the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to the accompanying drawings and specific examples, wherein the raw materials used in the examples and comparative examples of the present invention are commercially available, and the polyether modified siloxane leveling agent used in the present invention is provided by BYK company, specifically model No. BYK-348; the water-based acrylate copolymer used in the application is provided by TEGO company, and the specific model is TEGO-450; the fluorocarbon modified acrylate polymer used in the present application is provided by Uniqchem corporation, with the specific model UNIQFLOW377S, and the organo-modified polysiloxane is provided by TEGO corporation, with the specific model TEGO-204.
The present application sets forth examples 1-5, with the components and parts by weight selections for the water-based interfacial release layer and ink-bearing layer in specific examples 1-5 shown in tables 1 and 2:
TABLE 1 selection of parts by weight of water-based interfacial release layer and ink-bearing layer for specific examples 1-5
TABLE 2 selection of components for water-based interfacial release layer and ink-bearing layer in specific examples 1-5
Meanwhile, the application is provided with comparative examples 1-9, the weight parts of the water-based interface stripping layer and the ink bearing layer in specific comparative examples 1-4 are selected as shown in the table 3, and the component selection of the comparative examples 1-4 is completely the same as that of the example 5; the selection of the components of the water-based interfacial peeling layer and the ink carrying layer in specific comparative examples 5 to 9 is shown in Table 4, and the selection of the parts by weight of comparative examples 5 to 9 is completely the same as that of example 5;
TABLE 3 selection of parts by weight of water-based interfacial release layer and ink-bearing layer in specific comparative examples 1-4
TABLE 4 selection of components for water-based interfacial release layer and ink-bearing layer in specific comparative examples 5-9
In the embodiment 1 of the present application, after selecting the components and the parts by weight according to the above tables 1-2, a production process of a water-based digital inkjet transfer intermediate medium comprises the following steps: coating a water-based interface stripping layer and a water-based ink bearing layer on the surface of an intermediate transfer medium support body, wherein the intermediate transfer medium support body is release base paper, the coating mode is curtain coating, and the total coating amount is 2g/m calculated by dry solid component per single surface2；
In example 2 of the present application, a process for producing a water-based digital inkjet transfer intermediate medium, after selecting components and parts by weight according to the above tables 1 to 2, comprises the steps of: coating a water-based interface stripping layer and a water-based ink bearing layer on the surface of an intermediate transfer medium support, wherein the intermediate transfer medium support is a polyethylene terephthalate thermal transfer film, the coating mode is curtain coating, and the total coating weight is 10g/m in terms of dry solid component per single surface2；
In example 3 of the present application, a process for producing a water-based digital inkjet transfer intermediate medium, after selecting components and parts by weight according to the above tables 1 to 2, comprises the steps of: coating a water-based interface stripping layer and a water-based ink bearing layer on the surface of an intermediate transfer medium support, wherein the intermediate transfer medium support is glassine paper, the coating mode is bar coating, and the total coating weight is 3g/m calculated by dry solid component per single side2；
In example 4 of the present application, a process for producing a water-based digital inkjet transfer intermediate medium, selected in terms of components and parts by weight according to the above tables 1 to 2, comprises the steps of: coating a water-based interface stripping layer and a water-based ink bearing layer on the surface of an intermediate transfer medium support, wherein the intermediate transfer medium support is a polyethylene naphthalate thermal transfer film, the coating mode is air knife coating, and the total coating amount is 7g/m in terms of dry solid component per single surface2；
In example 5 of the present application, a process for producing a water-based digital inkjet transfer intermediate medium, selected in terms of components and parts by weight according to the above tables 1 to 2, comprises the steps of: coating a water-based interface stripping layer and a water-based ink bearing layer on the surface of an intermediate transfer medium support, wherein the intermediate transfer medium support is a polyethylene terephthalate thermal transfer film, the coating mode is air knife coating, and the total coating weight is 5g/m in terms of dry solid component per single surface2；
The production process of the water-based digital ink-jet transfer intermediate of the comparative example of the present application was exactly the same as that of example 5. The comparative graph of the powder adhesion conditions of the application example 5 and the comparative example 2 is shown in fig. 1, wherein the powder adhesion and the interface stripping layer have no positive/negative correlation and mainly depend on the amounts of the fixing agent and the latex binder in the ink bearing layer; the comparative graph of the cracking of the printing ink of example 5 and comparative example 3 is shown in fig. 2, wherein the cracking condition also depends on the amount of the fixing agent and the latex binder in the ink bearing layer, and when the amount is too large, the cracking condition of the printing pattern can be caused; the release layer peeling comparison of example 5 and comparative example 2 is shown in fig. 3, the release layer peeling condition mainly depends on the interfacial peeling agent, the catalyst and the adhesion agent, and when the amount is too small, the poor peeling phenomenon occurs; the comparative images of the jet printed color/white inks of example 5 and comparative example 4 are shown in FIG. 4; as can be seen from FIGS. 1-4, the best results were obtained when the composition and the weight of the intermediate were all within the ranges selected for the present application.
Test examples Water-based digital ink-jet transfer intermediate Performance testing
Test procedures and standards:
1) white ink bearing ratio: controlling the ink output amount of the white coating ink through printing a spot color channel, wherein the ink output amount is increased when the numerical value is increased; the printing white ink amount of the universal digital pyrograph film is more than 70 percent.
2) Powder sticking condition: at 0.125m2The digital ink-jet transfer printing intermediate medium is sprayed and printed with a standard CMYK picture, quantitative high-molecular hot-melt adhesive powder is uniformly scattered and covered on the surface of the medium, and the weight ratio of the adhesive powder is measured after the powder is shaken; the powder sticking amount of the universal CMYK image is 30 percent, the value lower than the value indicates that the powder sticking amount is insufficient, the color fastness of the pattern after subsequent transfer printing is influenced, and the value higher than the value indicates that the powder sticking is excessive, namely, the powder sticking phenomenon also occurs at the non-image part.
3) Pattern stripping condition: at 0.125m2The digital ink-jet transfer printing intermediate medium is sprayed and printed with a standard CMYK image, powder is scattered and shaken on the surface of the digital ink-jet transfer printing intermediate medium, the digital ink-jet transfer printing intermediate medium is peeled after being thermoprinted, and the weight ratio of residual images on the surface of the intermediate medium after transfer printing is measured.
And (3) test results: the test results are shown in Table 5
TABLE 5 results of performance test of examples and comparative examples
Note: 1) in comparative examples 1 and 5, the interface peeling layer could not be completely cured, and thus no relevant test was performed;
2) the linear polyacrylamide, styrene acrylate emulsion, and pure acrylic latex used in comparative examples 8 and 9 were poor in color/ink curability and poor in compatibility with the rest of the components of the ink bearing layer, and therefore no correlation test was performed.
When the interface stripping agent, the catalyst and the adhesion agent in the water-based interface stripping layer are in the preferable component selection range, the prepared transfer intermediate medium has good stripping effect and good compatibility of the interface stripping layer and the ink bearing layer, so that the pattern stripping condition after hot stamping is good. When the above three components are less than the preferable range, the release effect of the interface release layer is weak, resulting in difficulty in complete peeling of the transferred pattern; when the above three components are higher than the preferable ranges, the interfacial release layer is difficult to be completely cured, and compatibility with an ink-bearing layer coating the surface thereof is deteriorated, resulting in failure to normally jet-print a pattern.
When the color fixing agent and the latex adhesive in the ink bearing layer are in the preferable component selection range, the prepared transfer printing intermediate medium has strong fixing/anchoring capacity to water-based color/white ink, and the patterns obtained after hot stamping have moderate hand feeling. When the above two components are less than the preferred ranges, the fixing/anchoring ability to the color/white ink is significantly reduced, resulting in the occurrence of a bleeding phenomenon in the printed pattern; when the two components are higher than the preferable range, the fixation/anchoring capability and the moisture absorption capability of the color/white ink are too high, so that the cracking phenomenon occurs during the pattern spray printing, and the hand feeling of the pattern after hot stamping is influenced.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A production process of a water-based digital ink-jet transfer printing intermediate medium is characterized by comprising the following steps: a water-based interfacial release layer and a water-based ink-bearing layer are coated on the surface of an intermediate transfer medium support.
2. The process for producing a water-based digital ink-jet transfer intermediate medium according to claim 1, wherein the water-based interfacial release layer comprises the following components in parts by weight: 30-90 parts of interface stripping agent, 0-10 parts of catalyst, 1-10 parts of adhesion agent, 0.2-5 parts of flatting agent, 0.2-2 parts of defoaming agent and 0.1-2 parts of preservative.
3. The process for producing a water-based digital ink-jet transfer intermediate medium according to claim 2, wherein the water-based interfacial release layer comprises the following components in parts by weight: 40-80 parts of interface stripping agent, 3-8 parts of catalyst, 2-6 parts of adhesion agent, 0.5-3 parts of flatting agent, 0.5-1 part of defoaming agent and 0.1-0.5 part of preservative.
4. The process for producing a water-based digital ink-jet transfer intermediate medium according to claim 2 or 3, wherein at least one of the following (a) to (f):
(a) the interface stripping agent is at least one of PE wax emulsion, polysiloxane emulsion and fluorine-silicon emulsion;
(b) the catalyst is a platinum catalyst or an organic tin catalyst;
(c) the adhesion agent is at least one of modified organic siloxane, polyurethane and acrylate;
(d) the leveling agent is at least one of polyether modified siloxane, water-based acrylate copolymer and fluorocarbon modified acrylate polymer;
(e) the defoaming agent is organic modified polysiloxane or fatty alcohol emulsion;
(f) the preservative is pyrithione or isothiazolinone.
5. The process for producing a water-based digital ink jet transfer intermediate according to claim 1, wherein the ink bearing layer comprises the following components in parts by weight: 1-15 parts of inorganic filler, 5-40 parts of color fixing agent, 5-30 parts of latex adhesive, 0.2-5 parts of flatting agent, 1-5 parts of thickening agent, 0.2-2 parts of defoaming agent and 0.1-2 parts of preservative.
6. The process for producing a water-based digital ink jet transfer intermediate according to claim 5, wherein the ink bearing layer comprises the following components in parts by weight: 5-15 parts of inorganic filler, 10-25 parts of color fixing agent, 10-20 parts of latex adhesive, 1-3 parts of flatting agent, 1-3 parts of thickening agent, 0.5-1 part of defoaming agent and 0.1-0.5 part of preservative.
7. The process for producing a water-based digital ink-jet transfer intermediate medium according to claim 5 or 6, wherein at least one of the following (a) to (g):
(a) the inorganic filler is at least one of silicon dioxide, calcium carbonate and kaolin;
(b) the color fixing agent is at least one of polyethyleneimine, polyalkenyl amine chloride and inorganic metal salt compounds;
(c) the latex adhesive is at least one of cationic neoprene latex, cationic acrylate copolymer emulsion, cationic styrene-butadiene latex and cationic polyurethane;
(d) the leveling agent is at least one of polyether modified siloxane, water-based acrylate copolymer and fluorocarbon modified acrylate polymer;
(e) the thickener is at least one of nonionic polyurethane, guar gum, gum arabic, polyvinyl alcohol and polyacrylic acid;
(f) the defoaming agent is organic modified polysiloxane or fatty alcohol emulsion;
(g) the preservative is pyrithione or isothiazolinone.
8. The process for producing a water-based digital ink jet transfer intermediate according to claim 1, wherein the intermediate support is a paper-based material or a film-based material.
9. A water-based digital ink-jet transfer intermediate prepared by the process for producing a water-based digital ink-jet transfer intermediate according to any one of claims 1 to 8.
10. Use of the water-based digital ink jet transfer intermediate according to claim 9 in the field of pyrograph films.
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