CN110588195B - Preparation process of printed matter with gravure fission effect - Google Patents
Preparation process of printed matter with gravure fission effect Download PDFInfo
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- CN110588195B CN110588195B CN201910889068.2A CN201910889068A CN110588195B CN 110588195 B CN110588195 B CN 110588195B CN 201910889068 A CN201910889068 A CN 201910889068A CN 110588195 B CN110588195 B CN 110588195B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/10—Intaglio printing ; Gravure printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
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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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
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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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
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- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention relates to the technical field of printing, in particular to a preparation process of a printed matter with a gravure fission effect, which comprises the following steps: step A: printing UV fission ink on a carrier through an intaglio plate; and B: and (3) sequentially carrying out UV detonation treatment and UV drying and curing treatment on the bearing object printed with the UV fission ink to prepare a printed matter with a gravure fission effect. The preparation process of the printed matter with the gravure fission effect has the advantages of simple operation, easy control and high production efficiency, can ensure that the prepared printed matter has obvious gravure fission effect, has better adhesive force of the cured printing ink on a bearing object, is not easy to generate the phenomena of edge rising, tilting and the like, has better weather resistance and aging resistance, is not easy to generate the phenomena of yellowing or fading and the like, has stable quality, and can be used for mass production.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a preparation process of a printed matter with a gravure fission effect.
Background
At present, printing effects of printed matters are various, a gold stamping effect, a holographic effect or a cracking wrinkle effect and the like are adopted, but for the printed matters with the cracking effect, ink printed on the printed matters is cured and the like, even the cracking effect can be formed, the edges of the ink after cracking have the phenomena of edge rising, tilting and the like, the phenomenon of internal shrinkage after curing of the ink is obvious, so that the ink layer after curing is easy to fall off from a bearing object, the adhesive force is low, the sun-proof and aging-resistant performance is low, the phenomena of yellowing or fading and the like are easy to occur, the appearance of the printed matters is influenced, the durability is reduced, and the packaging grade of the printed matters is reduced.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the printed matter preparation process with the gravure fission effect, the operation is simple, the control is easy, the production efficiency is high, the gravure fission effect of the prepared printed matter is obvious, the adhesion force of the cured printing ink on a bearing object is good, the phenomena of edge rising, tilting and the like are not easy to occur, the weather resistance and the aging resistance are good, the phenomena of yellowing or fading and the like are not easy to occur, the quality is stable, and the process can be used for mass production.
The purpose of the invention is realized by the following technical scheme: a preparation process of a printed matter with a gravure fission effect comprises the following steps:
step A: printing UV fission ink on a carrier through an intaglio plate;
and B: and (3) sequentially carrying out UV detonation treatment and UV drying and curing treatment on the bearing object printed with the UV fission ink to prepare a printed matter with a gravure fission effect.
The ink layer with the gravure fission effect is prepared on the bearing object through the steps, the operation is simple, the control is easy, the production efficiency is high, the UV detonation treatment is adopted, the UV fission ink can be triggered to generate the light fusion reaction, after the UV fission ink after the light fusion is subjected to the UV drying and curing treatment, the ink is cured and formed, the fissile wrinkle effect is formed, the surface appearance and the attractiveness of a printed product are improved, the gravure fission effect of the printed product is obvious, the adhesive force of the cured ink on the bearing object is good, the phenomena of edge rising, tilting and the like are not easy to occur, the cured ink has good weather resistance and aging resistance, the phenomena of yellowing or fading and the like are not easy to occur, the quality is stable, and the ink layer can be used for mass production.
Preferably, in the step A, the plate depth of the gravure plate is 65-70 μm, the number of lines is 80-90 lines, and the cross section of the cells is tapered. The invention can improve the inking quantity of the UV fission ink by strictly controlling the plate depth and the line number of the gravure plate and the structure of the mesh, has high precision, ensures that the graphic and text information gravure on the surface of a bearing object is clear, and does not have the phenomena of wire drawing, edge blurring and the like.
Preferably, in the step a, the UV fission ink includes the following raw materials in parts by weight:
according to the invention, the UV fission ink prepared by the raw materials has good viscosity, high adhesive force on a bearing object and low internal shrinkage after UV detonation and UV drying curing treatment, so that the cured ink pattern layer does not have the phenomena of edge rising, tilting and the like, has good weather resistance and aging resistance, is not easy to have the phenomena of yellowing, fading and the like, and has stable quality.
The modified epoxy acrylic resin is blended with the polyurethane acrylic resin, so that the printing ink has better viscosity and adhesive force, and the introduced modified epoxy acrylic resin can improve the curing speed of a printing ink system and simultaneously does not reduce the flexibility of the printing ink, so that the printing ink is not easy to become brittle after being cured, and further, the phenomena of cracking, edge lifting, tilting and the like are reduced and avoided. Because the cured epoxy resin has the defects of high crosslinking density, large internal stress, poor quality brittleness, fatigue resistance, heat resistance, poor impact toughness and the like, the phenomena of edge rising, tilting and the like are easy to occur after the ink system is detonated and cured, and the acrylic resin is adopted to modify the epoxy resin, so that the brittleness, the humidity resistance and the heat resistance of the epoxy resin are improved, the epoxy resin has better flexibility, and the phenomena of brittleness and the like are not easy to occur.
The adopted tertiary butyl hydroquinone can adjust the viscosity of the ink, so that the ink can be stably attached to the surface of the ink, the internal contraction force of an ink system after UV detonation and UV drying curing is reduced, and the phenomena of edge rising, tilting and the like caused by the internal contraction of the ink are reduced and avoided; the adopted trimethylolpropane triacrylate plays a role in modifying and diluting an ink system, the viscosity of the ink system is adjusted, the cross-linking property of the polyurethane acrylic resin and the modified epoxy acrylic resin is improved, the curing time is shortened, and the adhesive strength between the ink and a bearing object is improved.
The adopted photosensitizer can absorb UV light energy, promote the polymerization crosslinking of polyurethane acrylic resin and modified epoxy acrylic resin in an ink system, improve the quality stability of the ink, enlarge the photosensitive range of the ink, promote the processes of UV detonation treatment and UV drying and curing treatment, and shorten the curing time; the adopted solvent can improve the dispersibility among materials, improve the leveling property and the ductility of an ink system, is easy to print and form on the surface of a bearing object and has stable adhesion.
Preferably, each part of the auxiliary agent comprises 3-8 parts of a flatting agent and 2-6 parts of a defoaming agent; each part of the flatting agent is a mixture of polydimethylsiloxane, diacetone alcohol and a MODAREZ MFP C type acrylate flatting agent in a weight ratio of 2-4:0.5-1.5: 2; each part of the defoaming agent is prepared from polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether and polyoxypropylene polyoxyethylene glycerol ether in a weight ratio of 1: 2-4: 3, and (b) a mixture of the components.
By adopting the flatting agent, the surface tension of an ink system can be reduced, the ductility of the ink is improved, the ink is printed uniformly, and the forming is stable; the defoaming agent can reduce or inhibit bubbles generated in the ink preparation process, has good thermal stability, can avoid the influence on the quality of the ink due to the bubbles generated by UV detonation and temperature rise in the UV photocuring process, and avoids the bad phenomena of shrinkage cavity, orange peel and the like of an ink pattern layer caused by the generation of the bubbles.
Preferably, each part of the photosensitizer is a mixture of benzophenone, 2,4, 6-trimethylbenzoyldiphenylphosphine oxide and alpha-hydroxycyclohexylbenzone in a weight ratio of 3:4 to 7: 2.
By adopting the photosensitizer, the UV light energy can be absorbed, the polymerization and crosslinking of the polyurethane acrylic resin and the modified epoxy acrylic resin in an ink system are promoted, the quality stability of the ink is improved, the photosensitive range of the ink is expanded, the processes of UV detonation treatment and UV drying and curing treatment are promoted, and the curing time is shortened; wherein, the benzophenone adopted has low cost and good fusion promoting effect; 2,4, 6-trimethylbenzene formyl diphenyl phosphine oxide adopted has good fusion promoting effect, high activity and wider light absorption range, generates two free radicals of benzoyl and phosphoryl after illumination, can initiate polymerization, accelerates the photocuring speed, has low volatility, weakens or avoids the internal shrinkage of an ink system, has photobleaching function, ensures that the ink is not easy to yellow after being cured and formed, and improves the weather resistance and the aging resistance of the ink; the adopted alpha-hydroxycyclohexyl benzophenone does not yellow, can improve the yellowing resistance of the ink, and has good thermal stability and high initiation efficiency.
Preferably, each part of the solvent is prepared by mixing ethanol, acetone, isopropanol and water in a weight ratio of 2-4:0.5-1.5: 3: 3-5.
The solvent adopted by the invention can improve the dispersibility among materials, improve the leveling property and the ductility of an ink system, is easy to print and form on the surface of a bearing object and has stable adhesion.
Preferably, the modified epoxy acrylic resin comprises the following raw materials in parts by weight:
according to the invention, acrylic acid and 2,3,4, 5-tetrafluorobenzoic acid are adopted to provide carboxylic acid groups of a system, the carboxylic acid groups are crosslinked with epoxy groups of epoxy resin under the catalytic action of triphenylphosphine serving as a catalyst, and meanwhile, p-hydroxyanisole is combined to prevent materials in the system from agglomerating to play a role in inhibiting polymerization, so that stable modified epoxy acrylic resin is prepared, the prepared modified epoxy acrylic resin is used for improving the curing speed of an ink system, the flexibility of the ink is not reduced, the brittleness of the cured ink is not easy to occur, and the phenomena of cracking, edge lifting and the like of the ink are reduced and avoided.
Preferably, the modified epoxy acrylic resin is prepared by the following steps:
step (1): putting epoxy resin into a reaction device according to parts by weight, heating while stirring, sequentially adding 2,3,4, 5-tetrafluorobenzoic acid, p-hydroxyanisole and triphenylphosphine after heating to 45-55 ℃, then continuing heating while stirring, stopping heating when heating to 75 ℃, then heating the materials to 98 ℃, cooling to 80 ℃, keeping the temperature at 80-115 ℃, and reacting for 1.5-3 hours to obtain a mixture; the addition amount of the p-hydroxyanisole and the triphenylphosphine is 50 percent of the total amount of the p-hydroxyanisole and the triphenylphosphine;
step (2): and (2) when the acid value of the mixture prepared in the step (1) is lower than 5 or the mixture becomes light yellow, dropwise adding acrylic resin, controlling the acrylic resin to be completely dropwise added within 15-30min, then adding the rest p-hydroxyanisole and triphenylphosphine, reacting for 1-3h at the temperature of 110-115 ℃, sampling to test the acid value, and cooling to the temperature below 90 ℃ when the acid value is lower than 3, and discharging to prepare the modified epoxy acrylic resin.
According to the invention, 2,3,4, 5-tetrafluorobenzoic acid is added into epoxy resin, the acid value of a system is regulated and controlled, the 2,3,4, 5-tetrafluorobenzoic acid is pre-reacted with the epoxy resin, p-hydroxyanisole and triphenylphosphine are added in batches to catalyze and promote the reaction process, prevent the agglomeration of materials, strictly control the reaction temperature of the system, improve the polymerization activity of the epoxy resin, and subsequently acrylic resin is added into the system in a dropwise manner, so that the binding property of the acrylic resin and the epoxy resin can be improved, the prepared stable and uniformly dispersed modified epoxy acrylic resin is obtained, the curing speed of an ink system is improved by using the prepared modified epoxy acrylic resin, the flexibility of the ink is not reduced, the brittleness of the ink after curing is not easy to occur, and the phenomena of cracking, edge lifting and the like of the ink are reduced and avoided.
Preferably, the UV fission ink is prepared by:
step S1: according to the weight parts, fully and uniformly mixing polyurethane acrylic resin, tert-butyl hydroquinone, trimethylolpropane triacrylate and a photosensitizer, stirring and dispersing at constant temperature to prepare a mixture;
step S2: adding the modified epoxy acrylic resin, the auxiliary agent and the solvent into the mixture prepared in the step S2 according to the parts by weight, and stirring for 30-40min to uniformly disperse the raw materials to reach the viscosity of 40-55 Pa.s; and finally filtering through 200-mesh gauze to obtain the UV fission ink, and barreling for later use.
Preferably, in the step S1, the stirring temperature at constant temperature is 45-55 ℃, the stirring time is 55-65min, and the stirring and the dispersion are carried out until the particle size of the mixture reaches 10-18 μm.
According to the invention, the UV fission ink prepared by adopting the steps has good viscosity, high adhesive force on a bearing object and low inner shrinkage after UV detonation and UV drying curing treatment, so that the cured ink pattern layer does not have the phenomena of edge rising, tilting and the like, has good weather resistance and aging resistance, is not easy to have the phenomena of yellowing, fading and the like, and has stable quality.
Preferably, in the step B, the UV detonation treatment adopts a UV detonation lamp assembly, the UV detonation lamp assembly comprises 1-5 UV detonation lamp tubes with power of 7-16kW, and the UV wavelength of the UV detonation treatment is 220-380 nm.
Preferably, in the step B, the UV drying and curing treatment adopts a UV drying and curing lamp assembly, the UV drying and curing lamp assembly comprises 4-6 UV drying and curing lamps with the power of 9-14kW, the UV wavelength of the UV drying and curing treatment is 240-405nm, and the treatment temperature is 35-40 ℃.
According to the invention, by strictly controlling the UV wavelength of the UV detonation treatment and the UV wavelength and temperature of the UV drying curing treatment, the phenomena of edge rising, tilting and the like of the cured printing ink pattern layer can be avoided, and the printing ink pattern layer has better weather resistance and aging resistance, is not easy to have the phenomena of yellowing, fading and the like, and has stable quality.
The invention has the beneficial effects that: the preparation process of the printed matter with the gravure fission effect has the advantages of simple operation, easy control and high production efficiency, can trigger the UV fission ink to generate the photofusion reaction by adopting the UV detonation treatment, can cure and form the ink after the UV fission ink after the photofusion is subjected to the UV drying and curing treatment, and forms the fission wrinkle effect, thereby improving the surface appearance and the aesthetic property of the printed matter.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
Example 1
A preparation process of a printed matter with a gravure fission effect comprises the following steps:
step A: printing UV fission ink on a carrier through an intaglio plate;
and B: and (3) sequentially carrying out UV detonation treatment and UV drying and curing treatment on the bearing object printed with the UV fission ink to prepare a printed matter with a gravure fission effect.
In the step A, the plate depth of the gravure plate is 65 mu m, the number of lines is 80, and the cross section of the mesh is conical.
In the step A, the UV fission ink comprises the following raw materials in parts by weight:
each part of the auxiliary agent comprises 3 parts of flatting agent and 6 parts of defoaming agent; each part of the flatting agent is a mixture of polydimethylsiloxane, diacetone alcohol and a MODAREZ MFP C type acrylate flatting agent in a weight ratio of 2:1.5: 2; each part of the defoaming agent is prepared from polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether and polyoxypropylene polyoxyethylene glycerol ether in a weight ratio of 1: 2: 3, and (b) a mixture of the components.
Each part of the photosensitizer is a mixture of benzophenone, 2,4, 6-trimethylbenzoyldiphenylphosphine oxide and alpha-hydroxycyclohexylbenzone in a weight ratio of 3:4: 2.
Each part of the solvent is prepared from ethanol, acetone, isopropanol and water in a weight ratio of 2: 0.5: 3:3.
The modified epoxy acrylic resin comprises the following raw materials in parts by weight:
the modified epoxy acrylic resin is prepared by the following steps:
step (1): putting epoxy resin into a reaction device according to parts by weight, heating while stirring, sequentially adding 2,3,4, 5-tetrafluorobenzoic acid, p-hydroxyanisole and triphenylphosphine after heating to 45 ℃, then continuing to heat while stirring, stopping heating when heating to 75 ℃, then heating the materials to 98 ℃, cooling to 80 ℃, keeping the temperature at 80 ℃, and reacting for 3 hours to obtain a mixture; the addition amount of the p-hydroxyanisole and the triphenylphosphine is 50 percent of the total amount of the p-hydroxyanisole and the triphenylphosphine;
step (2): and (2) when the acid value of the mixture prepared in the step (1) is lower than 5 or the mixture becomes light yellow, dropwise adding acrylic resin, controlling the acrylic resin to be completely dropwise added within 15min, then adding the rest p-hydroxyanisole and triphenylphosphine, reacting for 3h at the temperature of 110 ℃, sampling to test the acid value, cooling to the temperature of below 90 ℃ when the acid value is lower than 3, and discharging to prepare the modified epoxy acrylic resin.
The UV fission ink is prepared by the following steps:
step S1: according to the weight parts, fully and uniformly mixing polyurethane acrylic resin, tert-butyl hydroquinone, trimethylolpropane triacrylate and a photosensitizer, stirring and dispersing at constant temperature to prepare a mixture;
step S2: adding the modified epoxy acrylic resin, the auxiliary agent and the solvent into the mixture prepared in the step S2 according to the parts by weight, and stirring for 30min to uniformly disperse the raw materials to reach the viscosity of 55 Pa.s; and finally filtering through 200-mesh gauze to obtain the UV fission ink, and barreling for later use.
In the step S1, the stirring temperature is 45 ℃ at constant temperature, the stirring time is 65min, and the stirring and the dispersion are carried out until the grain diameter of the mixture reaches 10 μm.
In the step B, a UV detonation lamp assembly is adopted in the UV detonation treatment, the UV detonation lamp assembly comprises 1 UV detonation lamp tube with the power of 16kW, and the UV wavelength of the UV detonation treatment is 220 nm.
In the step B, a UV drying curing lamp assembly is adopted in the UV drying curing treatment, the UV drying curing lamp assembly comprises 4 UV drying curing lamps with the power of 11kW, the UV wavelength of the UV drying curing treatment is 280-405nm, and the treatment temperature is 35-40 ℃.
Example 2
A preparation process of a printed matter with a gravure fission effect comprises the following steps:
step A: printing UV fission ink on a carrier through an intaglio plate;
and B: and (3) sequentially carrying out UV detonation treatment and UV drying and curing treatment on the bearing object printed with the UV fission ink to prepare a printed matter with a gravure fission effect.
In the step A, the plate depth of the gravure plate is 66 mu m, the number of lines is 82, and the cross section of the cells is conical.
In the step A, the UV fission ink comprises the following raw materials in parts by weight:
each part of the auxiliary agent comprises 4 parts of flatting agent and 5 parts of defoaming agent; each part of the flatting agent is a mixture of polydimethylsiloxane, diacetone alcohol and a MODAREZ MFP C type acrylate flatting agent in a weight ratio of 2.5:1.3: 2; each part of the defoaming agent is prepared from polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether and polyoxypropylene polyoxyethylene glycerol ether in a weight ratio of 1: 2.5: 3, and (b) a mixture of the components.
Each part of the photosensitizer is a mixture of benzophenone, 2,4, 6-trimethylbenzoyldiphenylphosphine oxide and alpha-hydroxycyclohexylbenzone in a weight ratio of 3:5: 2.
Each part of the solvent is prepared from ethanol, acetone, isopropanol and water in a weight ratio of 2.5: 0.8: 3: 3.5.
The modified epoxy acrylic resin comprises the following raw materials in parts by weight:
the modified epoxy acrylic resin is prepared by the following steps:
step (1): putting epoxy resin into a reaction device according to parts by weight, heating while stirring, sequentially adding 2,3,4, 5-tetrafluorobenzoic acid, p-hydroxyanisole and triphenylphosphine after heating to 48 ℃, then continuing to heat while stirring, stopping heating when heating to 75 ℃, then heating the materials to 98 ℃, cooling to 80 ℃, keeping the temperature at 90 ℃, and reacting for 2.5 hours to obtain a mixture; the addition amount of the p-hydroxyanisole and the triphenylphosphine is 50 percent of the total amount of the p-hydroxyanisole and the triphenylphosphine;
step (2): and (2) when the acid value of the mixture prepared in the step (1) is lower than 5 or the mixture becomes light yellow, dropwise adding acrylic resin, controlling the acrylic resin to be completely dropwise added within 20min, then adding the rest p-hydroxyanisole and triphenylphosphine, reacting for 1.5h at 111 ℃, sampling to test the acid value, cooling to below 90 ℃ when the acid value is lower than 3, and discharging to prepare the modified epoxy acrylic resin.
The UV fission ink is prepared by the following steps:
step S1: according to the weight parts, fully and uniformly mixing polyurethane acrylic resin, tert-butyl hydroquinone, trimethylolpropane triacrylate and a photosensitizer, stirring and dispersing at constant temperature to prepare a mixture;
step S2: adding the modified epoxy acrylic resin, the auxiliary agent and the solvent into the mixture prepared in the step S2 according to the parts by weight, and stirring for 32min to uniformly disperse the raw materials to reach the viscosity of 52 Pa.s; and finally filtering through 200-mesh gauze to obtain the UV fission ink, and barreling for later use.
In the step S1, the stirring temperature is kept at 48 ℃ for 63min, and the mixture is stirred and dispersed until the grain diameter of the mixture reaches 12 μm.
In the step B, a UV detonation lamp assembly is adopted in the UV detonation treatment, the UV detonation lamp assembly comprises 2 UV detonation lamp tubes with power of 12kW, and the UV wavelength of the UV detonation treatment is 280 nm.
In the step B, a UV drying curing lamp assembly is adopted in the UV drying curing treatment, the UV drying curing lamp assembly comprises 4 UV drying curing lamps with the power of 11kW, the UV wavelength of the UV drying curing treatment is 280-405nm, and the treatment temperature is 35-40 ℃.
Example 3
A preparation process of a printed matter with a gravure fission effect comprises the following steps:
step A: printing UV fission ink on a carrier through an intaglio plate;
and B: and (3) sequentially carrying out UV detonation treatment and UV drying and curing treatment on the bearing object printed with the UV fission ink to prepare a printed matter with a gravure fission effect.
In the step A, the plate depth of the gravure plate is 68 mu m, the number of lines is 85 lines, and the cross section of the mesh is conical.
In the step A, the UV fission ink comprises the following raw materials in parts by weight:
each part of the auxiliary agent comprises 5 parts of a flatting agent and 4 parts of a defoaming agent; each part of the flatting agent is a mixture of polydimethylsiloxane, diacetone alcohol and a MODAREZ MFP C type acrylate flatting agent in a weight ratio of 3:1: 2; each part of the defoaming agent is prepared from polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether and polyoxypropylene polyoxyethylene glycerol ether in a weight ratio of 1: 3:3, and (b) a mixture of the components.
Each part of the photosensitizer is a mixture of benzophenone, 2,4, 6-trimethylbenzoyldiphenylphosphine oxide and alpha-hydroxycyclohexylbenzone in a weight ratio of 3:5.5: 2.
Each part of the solvent is prepared from ethanol, acetone, isopropanol and water in a weight ratio of 3: 1.0: 3:4.
The modified epoxy acrylic resin comprises the following raw materials in parts by weight:
the modified epoxy acrylic resin is prepared by the following steps:
step (1): putting epoxy resin into a reaction device according to parts by weight, heating while stirring, sequentially adding 2,3,4, 5-tetrafluorobenzoic acid, p-hydroxyanisole and triphenylphosphine after heating to 50 ℃, then continuing to heat while stirring, stopping heating when heating to 75 ℃, then heating the materials to 98 ℃, cooling to 80 ℃, keeping the temperature at 98 ℃, and reacting for 2.3 hours to obtain a mixture; the addition amount of the p-hydroxyanisole and the triphenylphosphine is 50 percent of the total amount of the p-hydroxyanisole and the triphenylphosphine;
step (2): and (2) when the acid value of the mixture prepared in the step (1) is lower than 5 or the mixture becomes light yellow, dropwise adding acrylic resin, controlling the acrylic resin to be completely dropwise added within 23min, then adding the rest p-hydroxyanisole and triphenylphosphine, reacting for 2h at the temperature of 113 ℃, sampling to test the acid value, cooling to the temperature of below 90 ℃ when the acid value is lower than 3, and discharging to prepare the modified epoxy acrylic resin.
The UV fission ink is prepared by the following steps:
step S1: according to the weight parts, fully and uniformly mixing polyurethane acrylic resin, tert-butyl hydroquinone, trimethylolpropane triacrylate and a photosensitizer, stirring and dispersing at constant temperature to prepare a mixture;
step S2: adding the modified epoxy acrylic resin, the auxiliary agent and the solvent into the mixture prepared in the step S2 according to the parts by weight, and stirring for 35min to uniformly disperse the raw materials to reach the viscosity of 48 Pa.s; and finally filtering through 200-mesh gauze to obtain the UV fission ink, and barreling for later use.
In the step S1, the stirring temperature is 50 ℃ at constant temperature, the stirring time is 60min, and the stirring dispersion is carried out until the grain diameter of the mixture reaches 14 μm.
In the step B, a UV detonation lamp assembly is adopted in the UV detonation treatment, the UV detonation lamp assembly comprises 1 UV detonation lamp tube with the power of 14kW and capable of being adjusted in a stepless mode, and the UV wavelength of the UV detonation treatment is 365 nm.
In the step B, a UV drying and curing lamp assembly is adopted in the UV drying and curing treatment, the UV drying and curing lamp assembly comprises 4 UV drying and curing lamps with the power of 14kW and capable of being steplessly adjusted, the UV wavelength of the UV drying and curing treatment is 280-405nm, and the treatment temperature is 35-40 ℃.
Example 4
A preparation process of a printed matter with a gravure fission effect comprises the following steps:
step A: printing UV fission ink on a carrier through an intaglio plate;
and B: and (3) sequentially carrying out UV detonation treatment and UV drying and curing treatment on the bearing object printed with the UV fission ink to prepare a printed matter with a gravure fission effect.
In the step A, the plate depth of the gravure plate is 69 mu m, the number of lines is 88, and the cross section of the cells is conical.
In the step A, the UV fission ink comprises the following raw materials in parts by weight:
each part of the auxiliary agent comprises 6 parts of flatting agent and 3 parts of defoaming agent; each part of the flatting agent is a mixture of polydimethylsiloxane, diacetone alcohol and a MODAREZ MFP C type acrylate flatting agent in a weight ratio of 3.5:0.5-1.5: 2; each part of the defoaming agent is prepared from polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether and polyoxypropylene polyoxyethylene glycerol ether in a weight ratio of 1: 3.5: 3, and (b) a mixture of the components.
Each part of the photosensitizer is a mixture of benzophenone, 2,4, 6-trimethylbenzoyldiphenylphosphine oxide and alpha-hydroxycyclohexylbenzone in a weight ratio of 3:6: 2.
Each part of the solvent is prepared from ethanol, acetone, isopropanol and water in a weight ratio of 3.5: 1.3: 3: 4.5.
The modified epoxy acrylic resin comprises the following raw materials in parts by weight:
the modified epoxy acrylic resin is prepared by the following steps:
step (1): putting epoxy resin into a reaction device according to parts by weight, heating while stirring, sequentially adding 2,3,4, 5-tetrafluorobenzoic acid, p-hydroxyanisole and triphenylphosphine after heating to 53 ℃, then continuing heating while stirring, stopping heating when heating to 75 ℃, then heating the materials to 98 ℃, cooling to 80 ℃, keeping the temperature at 108 ℃, and reacting for 2.0 hours to obtain a mixture; the addition amount of the p-hydroxyanisole and the triphenylphosphine is 50 percent of the total amount of the p-hydroxyanisole and the triphenylphosphine;
step (2): and (2) when the acid value of the mixture prepared in the step (1) is lower than 5 or the mixture becomes light yellow, dropwise adding acrylic resin, controlling the acrylic resin to be completely dropwise added within 26min, then adding the rest p-hydroxyanisole and triphenylphosphine, reacting for 2.5h at 114 ℃, sampling to test the acid value, cooling to below 90 ℃ when the acid value is lower than 3, and discharging to prepare the modified epoxy acrylic resin.
The UV fission ink is prepared by the following steps:
step S1: according to the weight parts, fully and uniformly mixing polyurethane acrylic resin, tert-butyl hydroquinone, trimethylolpropane triacrylate and a photosensitizer, stirring and dispersing at constant temperature to prepare a mixture;
step S2: adding the modified epoxy acrylic resin, the auxiliary agent and the solvent into the mixture prepared in the step S2 according to the parts by weight, and stirring for 38min to uniformly disperse the raw materials to reach the viscosity of 44 Pa.s; and finally filtering through 200-mesh gauze to obtain the UV fission ink, and barreling for later use.
In the step S1, the stirring temperature is 52 ℃ at constant temperature, the stirring time is 58min, and the stirring and the dispersion are carried out until the grain diameter of the mixture reaches 16 μm.
In the step B, a UV detonation lamp assembly is adopted in the UV detonation treatment, the UV detonation lamp assembly comprises 3 UV detonation lamp tubes with power of 10kW, and the UV wavelength of the UV detonation treatment is 320 nm.
In the step B, a UV drying curing lamp assembly is adopted in the UV drying curing treatment, the UV drying curing lamp assembly comprises 5 UV drying curing lamps with the power of 9.5kW, the UV wavelength of the UV drying curing treatment is 280-405nm, and the treatment temperature is 35-40 ℃.
Example 5
A preparation process of a printed matter with a gravure fission effect comprises the following steps:
step A: printing UV fission ink on a carrier through an intaglio plate;
and B: and (3) sequentially carrying out UV detonation treatment and UV drying and curing treatment on the bearing object printed with the UV fission ink to prepare a printed matter with a gravure fission effect.
In the step A, the plate depth of the gravure plate is 70 mu m, the number of lines is 90 lines, and the cross section of the mesh is conical.
In the step A, the UV fission ink comprises the following raw materials in parts by weight:
each part of the auxiliary agent comprises 8 parts of flatting agent and 2 parts of defoaming agent; each part of the flatting agent is a mixture of polydimethylsiloxane, diacetone alcohol and a MODAREZ MFP C type acrylate flatting agent in a weight ratio of 4:0.5: 2; each part of the defoaming agent is prepared from polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether and polyoxypropylene polyoxyethylene glycerol ether in a weight ratio of 1: 4: 3, and (b) a mixture of the components.
Each part of the photosensitizer is a mixture of benzophenone, 2,4, 6-trimethylbenzoyldiphenylphosphine oxide and alpha-hydroxycyclohexylbenzone in a weight ratio of 3:7: 2.
Each part of the solvent is prepared from ethanol, acetone, isopropanol and water in a weight ratio of 4: 1.5: 3:5.
The modified epoxy acrylic resin comprises the following raw materials in parts by weight:
the modified epoxy acrylic resin is prepared by the following steps:
step (1): putting epoxy resin into a reaction device according to parts by weight, heating while stirring, sequentially adding 2,3,4, 5-tetrafluorobenzoic acid, p-hydroxyanisole and triphenylphosphine after heating to 55 ℃, then continuing to heat while stirring, stopping heating when heating to 75 ℃, then heating the materials to 98 ℃, cooling to 80 ℃, keeping the temperature at 115 ℃, and reacting for 1.5 hours to obtain a mixture; the addition amount of the p-hydroxyanisole and the triphenylphosphine is 50 percent of the total amount of the p-hydroxyanisole and the triphenylphosphine;
step (2): and (2) when the acid value of the mixture prepared in the step (1) is lower than 5 or the mixture becomes light yellow, dropwise adding acrylic resin, controlling the acrylic resin to be completely dropwise added within 30min, then adding the rest p-hydroxyanisole and triphenylphosphine, reacting for 1h at the temperature of 115 ℃, sampling to test the acid value, cooling to the temperature below 90 ℃ when the acid value is lower than 3, and discharging to prepare the modified epoxy acrylic resin.
The UV fission ink is prepared by the following steps:
step S1: according to the weight parts, fully and uniformly mixing polyurethane acrylic resin, tert-butyl hydroquinone, trimethylolpropane triacrylate and a photosensitizer, stirring and dispersing at constant temperature to prepare a mixture;
step S2: adding the modified epoxy acrylic resin, the auxiliary agent and the solvent into the mixture prepared in the step S2 according to the parts by weight, and stirring for 40min to uniformly disperse the raw materials to reach the viscosity of 40 Pa.s; and finally filtering through 200-mesh gauze to obtain the UV fission ink, and barreling for later use.
In the step S1, the stirring temperature is 55 ℃ at constant temperature, the stirring time is 55min, and the stirring and the dispersion are carried out until the grain diameter of the mixture reaches 18 μm.
In the step B, a UV detonation lamp assembly is adopted in the UV detonation treatment, the UV detonation lamp assembly comprises 5 UV detonation lamp tubes with the power of 7kW, and the UV wavelength of the UV detonation treatment is 380 nm.
In the step B, a UV drying curing lamp assembly is adopted in the UV drying curing treatment, the UV drying curing lamp assembly comprises 6 UV drying curing lamps with the power of 9kW, the UV wavelength of the UV drying curing treatment is 280-405nm, and the treatment temperature is 35-40 ℃.
Comparative example 1
This comparative example differs from example 3 above in that:
in the step A, the UV fission ink comprises the following raw materials in parts by weight:
comparative example 2
This comparative example differs from example 3 above in that:
the modified epoxy acrylic resin comprises the following raw materials in parts by weight:
the prints prepared in examples 1 to 5 and comparative examples 1 to 2 were subjected to xenon lamp aging test, ink layer adhesion test and ink peeling test, and the test results are as follows:
| test items | Peel strength of ink layer/N | Ink drop out condition | Weather resistance of the composition |
| Example 1 | 3.6 | 5B | No obvious fading and yellowing phenomena |
| Example 2 | 3.9 | 5B | No obvious fading and yellowing phenomena |
| Example 3 | 4.2 | 5B | No obvious fading and yellowing phenomena |
| Example 4 | 4.0 | 5B | No obvious fading and yellowing phenomena |
| Example 5 | 3.8 | 5B | No obvious fading and yellowing phenomena |
| Comparative example 1 | 2.3 | 3B | Ink fading occurred within 28hColor and yellowing phenomenon |
| Comparative example 2 | 2.9 | 4B | The ink yellowing phenomenon appears in 34h |
The adhesion test of the ink layer adopts a sticking and pulling method, and the specific operation is as follows:
the first step is as follows: sticking the 3M adhesive tape on the printing ink printing surface, and rolling for 3 times in one direction by using a press roller with constant load;
the second step is that: standing for 5min, and preparing a sample with a length of 20cm and a width of 1.5cm according to a T-type peel strength test method;
the third step: the prepared test specimen was tested for T-peel strength on a peel tester.
The fourth step: judging whether the adhesive force is qualified according to the size of the peeling strength value (not the pull-off area of the ink layer)) and the damage type, wherein the larger the required peeling strength value is, the larger the adhesive force of the ink layer on the bearing object is.
The ink dropping condition of the ink layer is tested by adopting an alcohol resistance test, and the specific operation is as follows: wrapping a 300g weight with white cotton cloth, sticking absolute alcohol with the purity of 99.8%, wiping the printed ink pattern back and forth for 30 times (one is in sequence), observing whether the ink drops on the surface of the carrier after wiping, whether the ink drops on the surface of the white cotton cloth, whether the ink drops on the surface of the carrier obviously, and determining that the carrier and the white cotton cloth are qualified. However, if there are phenomena such as printed pattern falling, notch breakage, poor ink adhesion, and pattern blurring, the printed pattern is not qualified.
The ink dropping condition is according to the ASTM quality reference standard, which is concretely as follows:
| 5B | without any ink falling-off phenomenon |
| 4B | The ink falling rate is less than 5 percent |
| 3B | The ink falling rate is between 5 and 15 percent |
| 2B | The ink falling rate is 16-35% |
| 1B | The ink falling rate is between 36 and 65 percent |
| 0B | The ink falling rate is between 66 and 100 percent |
The xenon lamp aging test specifically comprises the steps of placing the prepared printed matter in a xenon lamp aging test box, adjusting the working temperature and humidity in the xenon lamp aging test box to 70 ℃ and 60%, placing for 48h (simulating a normal environment for 6 months under the test conditions), and observing the fading and yellowing phenomena.
According to the test data, the ink has good adhesive force on a bearing object, is not easy to generate phenomena of edge rising, tilting and the like, has good sun resistance, weather resistance and aging resistance, is not easy to generate phenomena of yellowing or fading and the like, has stable quality, covers UV fission ink on the surface of light column medium paper serving as a printing substrate, and generates different gloss effects on the surface through refraction and reflection of different light rays, so that the added value of the product is increased.
Compared with the embodiment 3, the ink of the comparative example 1 adopts the cyclohexanoic epoxy resin to replace the modified epoxy acrylic resin, so that the peel strength of the prepared ink layer is obviously reduced, the adhesive force of the ink on a bearing object is lower, the ink is easy to fall off under an alcohol resistance test, and the fading and yellowing phenomena of the ink occur within 28 hours, which shows that the weather resistance and the aging resistance of the ink layer are lower, and further reflects that the ink has better viscosity and adhesive force by adopting the modified epoxy acrylic resin and the polyurethane acrylic resin to blend, on one hand, the introduced modified epoxy acrylic resin can improve the curing speed of the ink system, on the other hand, the flexibility of the ink is not reduced, the brittleness and the humidity resistance of the epoxy resin are improved, the ink is not easy to appear brittleness after curing, and further cracking and cracking are avoided, Edge lifting, tilting and the like.
Compared with the embodiment 3, the comparative example 2 adopts the same amount of acrylic acid to replace 2,3,4, 5-tetrafluorobenzoic acid in the preparation of the modified epoxy acrylic resin in the comparative example 2, so that only acrylic acid and epoxy resin are adopted to react in a modified epoxy acrylic resin system, the peel strength of the prepared ink layer is reduced, the adhesive force of the ink on a bearing object is lower, the ink falling phenomenon is easy to occur under an alcohol resistance test, meanwhile, the ink yellowing phenomenon occurs within 34h, which shows that the weather resistance and the aging resistance are lower, and further reflects that the carboxylic acid groups of the system are provided by adopting 2,3,4, 5-tetrafluorobenzoic acid and acrylic acid at the same time, the two are compounded and crosslinked with the epoxy group of the epoxy resin, the acidity of the reaction system is controlled, the occurrence and the reaction process of triphenylphosphine catalytic reaction are combined, and the agglomeration of materials in the system is prevented by combining p-hydroxyanisole, the stable modified epoxy acrylic resin is prepared by the polymerization inhibition, the curing speed of the ink system is improved by the prepared modified epoxy acrylic resin, the flexibility of the ink is not reduced, the ink is not easy to become brittle after curing, and the phenomena of cracking, edge rising and the like of the ink are reduced and avoided.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (8)
1. A preparation process of a printed matter with a gravure fission effect is characterized by comprising the following steps: the method comprises the following steps:
step A: printing UV fission ink on a carrier through an intaglio plate;
and B: sequentially carrying out UV detonation treatment and UV drying and curing treatment on the bearing object printed with the UV fission ink to prepare a printed matter with a gravure fission effect;
in the step A, the UV fission ink comprises the following raw materials in parts by weight:
each part of the auxiliary agent comprises 3-8 parts of flatting agent and 2-6 parts of defoaming agent;
each part of the defoaming agent is prepared from polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether and polyoxypropylene polyoxyethylene glycerol ether in a weight ratio of 1: 2-4: 3;
each part of the photosensitizer is a mixture of benzophenone, 2,4, 6-trimethylbenzoyldiphenylphosphine oxide and alpha-hydroxycyclohexylbenzone in a weight ratio of 3:4-7: 2;
the modified epoxy acrylic resin comprises the following raw materials in parts by weight:
2. the process of claim 1, wherein the method comprises the following steps: in the step A, the plate depth of the gravure plate is 65-70 mu m, the number of lines is 80-90 lines, and the cross section of the mesh is conical.
3. The process of claim 1, wherein the method comprises the following steps: each part of the leveling agent is a mixture of polydimethylsiloxane, diacetone alcohol and a MODAREZ MFPC type acrylate leveling agent in a weight ratio of 2-4:0.5-1.5: 2.
4. The process of claim 1, wherein the method comprises the following steps: each part of the solvent is prepared from ethanol, acetone, isopropanol and water in a weight ratio of 2-4:0.5-1.5: 3: 3-5.
5. The process of claim 1, wherein the method comprises the following steps: the modified epoxy acrylic resin is prepared by the following steps:
step (1): putting epoxy resin into a reaction device according to parts by weight, heating while stirring, sequentially adding 2,3,4, 5-tetrafluorobenzoic acid, p-hydroxyanisole and triphenylphosphine after heating to 45-55 ℃, then continuing heating while stirring, stopping heating when heating to 75 ℃, then heating the materials to 98 ℃, cooling to 80 ℃, keeping the temperature at 80-115 ℃, and reacting for 1.5-3 hours to obtain a mixture; the addition amount of the p-hydroxyanisole and the triphenylphosphine is 50 percent of the total amount of the p-hydroxyanisole and the triphenylphosphine;
step (2): and (2) when the acid value of the mixture prepared in the step (1) is lower than 5 or the mixture becomes light yellow, dropwise adding acrylic resin, controlling the acrylic resin to be completely dropwise added within 15-30min, then adding the rest p-hydroxyanisole and triphenylphosphine, reacting for 1-3h at the temperature of 110-115 ℃, sampling to test the acid value, and cooling to the temperature below 90 ℃ when the acid value is lower than 3, and discharging to prepare the modified epoxy acrylic resin.
6. The process of claim 1, wherein the method comprises the following steps: the UV fission ink is prepared by the following steps:
step S1: according to the weight parts, fully and uniformly mixing polyurethane acrylic resin, tert-butyl hydroquinone, trimethylolpropane triacrylate and a photosensitizer, stirring and dispersing at constant temperature to prepare a mixture;
step S2: adding the modified epoxy acrylic resin, the auxiliary agent and the solvent into the mixture prepared in the step S2 according to the parts by weight, and stirring for 30-40min to uniformly disperse the raw materials to reach the viscosity of 40-55 Pa.s; and finally filtering through 200-mesh gauze to obtain the UV fission ink, and barreling for later use.
7. The process of claim 6, wherein the method comprises the following steps: in the step S1, the stirring temperature at constant temperature is 45-55 ℃, the stirring time is 55-65min, and the stirring and the dispersion are carried out until the grain diameter of the mixture reaches 10-18 μm.
8. The process of claim 6, wherein the method comprises the following steps: in the step B, a UV detonation lamp assembly is adopted in the UV detonation treatment, the UV detonation lamp assembly comprises 1-5 UV detonation lamp tubes with power of 7-16kW, and the UV wavelength of the UV detonation treatment is 220-380 nm; in the step B, a UV drying curing lamp assembly is adopted in the UV drying curing treatment, the UV drying curing lamp assembly comprises 4-6 UV drying curing lamps with the power of 9-14kW, the UV wavelength of the UV drying curing treatment is 240-405nm, and the treatment temperature is 35-40 ℃.
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| CN103612493A (en) * | 2013-11-26 | 2014-03-05 | 深圳市科彩印务有限公司 | Method for printing gravure wrinkles |
| CN105400383A (en) * | 2014-09-11 | 2016-03-16 | 洋紫荆油墨（浙江）有限公司 | Flexible ultraviolet-light-curable varnishing oil and preparation method thereof |
| CN105564066A (en) * | 2015-12-10 | 2016-05-11 | 上海诚艺包装科技有限公司 | Manufacturing technology for packing material with wrinkle effect |
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| CN107499011A (en) * | 2017-07-24 | 2017-12-22 | 青州新华包装制品有限公司 | A kind of processing method of gravure wrinkle |
| CN107696728A (en) * | 2017-09-25 | 2018-02-16 | 武汉虹之彩包装印刷有限公司 | One kind volume intaglio printing press printing fission effect process |
| CN110066400B (en) * | 2019-04-26 | 2021-08-24 | 深圳职业技术学院 | High-water-solubility modified epoxy acrylic resin and preparation method thereof |
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| CN103612493A (en) * | 2013-11-26 | 2014-03-05 | 深圳市科彩印务有限公司 | Method for printing gravure wrinkles |
| CN105400383A (en) * | 2014-09-11 | 2016-03-16 | 洋紫荆油墨（浙江）有限公司 | Flexible ultraviolet-light-curable varnishing oil and preparation method thereof |
| CN105564066A (en) * | 2015-12-10 | 2016-05-11 | 上海诚艺包装科技有限公司 | Manufacturing technology for packing material with wrinkle effect |
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