CN110561935A - gravure printing method adopting water-based ink - Google Patents
gravure printing method adopting water-based ink Download PDFInfo
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- CN110561935A CN110561935A CN201910851962.0A CN201910851962A CN110561935A CN 110561935 A CN110561935 A CN 110561935A CN 201910851962 A CN201910851962 A CN 201910851962A CN 110561935 A CN110561935 A CN 110561935A
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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
- B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
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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
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
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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
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
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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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- Organic Chemistry (AREA)
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Abstract
The invention relates to a gravure printing method using water-based ink, which prints the water-based ink on a printing substrate through a gravure printing machine, and the gravure printing method sequentially comprises the following steps: preparing water-based ink, printing, drying and rolling; the invention has the advantages that: the water-based ink is prepared by mixing isopropanol, normal propanol, ethanol, pigment, polyurethane resin and water, because the solvent component is water, waste gas in the printing process can be directly discharged, the wastewater treatment is relatively simple, the treatment is easier and less toxic than the dangerous solid waste treatment of solvent-based ink, the water-based ink is more environment-friendly than solvent-based ink in the improvement of the whole production process and social environment, and because the water-based ink does not contain volatile organic solvent, the working environment is improved, toxic and harmful substances in the solvent-based ink are eliminated, and the pollution of packaged goods is eliminated.
Description
Technical Field
the invention relates to a gravure printing method using water-based ink.
Background
intaglio printing is one of four printing modes, and directly imprints ink contained in intaglio pits on a printing stock; the intaglio ink is also called as intaglio ink and is a general name of various intaglio inks adopted by various intaglio printing modes, at present, in the printing process of the flexible packaging industry, organic solvent type ink is mainly used, because the intaglio printing speed is high, the printing requirements can be met only by using ink with strong volatility, but a large amount of pollution gas is released at the same time, and the volatilization of the gas can cause physical damage to field operators, belonging to the largest pollution process.
disclosure of Invention
The invention aims to provide a gravure printing method adopting water-based ink, which can effectively solve the problem that the existing ink is easy to discharge in the printing process due to the addition of an organic solvent.
In order to solve the technical problems, the invention is realized by the following technical scheme: an intaglio printing method using an aqueous ink, which prints the aqueous ink on a printing substrate by an intaglio printing press, the aqueous ink comprising the following components: the gravure printing machine comprises a rack, a gravure roller, a compression roller, a scraper, an oven and an ink fountain, wherein the oven is arranged at the discharge end of the rack, the ink fountain is arranged at the feed end of the oven, the gravure roller is arranged in the ink fountain, the compression roller is arranged above the gravure roller, the scraper is arranged in the ink fountain, the gravure roller is provided with engraving, the depth of the engraving on the gravure roller is 20-30 um, the scraper is a ceramic scraper, the oven comprises a box body and an electric heating pipe arranged on the box body, the length of the box body is 3m, the volume of the box body is 1.35m3, the air volume in the box body is 3/h-0 m3/h, the intaglio printing method comprises the following steps in sequence:
The method comprises the following steps: sequentially adding isopropanol, normal propanol, ethanol, pigment and polyurethane resin into water, stirring and mixing to prepare water-based ink, and storing the prepared water-based ink into an ink fountain;
Step two: printing the water-based ink prepared by mixing in the step one on a printing substrate by a gravure printing machine, wherein the printing speed is not more than 220m/min, the pressure of a scraper is 1-2.5 KN, and the pressure of a compression roller is 0.2-0.3 Mpa;
Step three: drying the printing substrate coated in the second step through an oven, wherein when the printing ink area M on the printing substrate is more than or equal to 70%, the drying temperature of the oven is 80-110 ℃, when the printing ink area M on the printing substrate is more than 70% and more than or equal to 30%, the drying temperature of the oven is 80-100 ℃, and when the printing ink area M on the printing substrate is less than 30%, the drying temperature of the oven is 70-80 ℃;
Step four: and (4) rolling the dried printing base material in the step three through a material receiving roller.
preferably, the gravure printing roller comprises a body and a copper coating coated on the body, and the engraving is arranged on the copper coating.
Preferably, the body is made of a shaftless seamless steel tube.
Preferably, the hardness of the scraper is 700-800 Hv.
preferably, the compression roller is a rubber compression roller, and the hardness of the compression roller is 75-95 Hv.
preferably, the printing substrate is a biaxially oriented polypropylene film with a surface tension value of more than or equal to 38 dyne or a biaxially oriented polyester film with a surface tension value of more than or equal to 48 dyne.
In conclusion, the invention has the advantages that: the water-based ink prepared by mixing isopropanol, normal propanol, ethanol, pigment, polyurethane resin and water has the advantages that as the solvent component is water, waste gas in the printing process can be directly discharged, the wastewater treatment is relatively simple, the treatment is easier and less toxic than the dangerous solid waste treatment of solvent-based ink, the water-based ink is more environment-friendly than solvent-based ink in the whole production process and social environment improvement, as the water-based ink does not contain volatile organic solvent, the working environment is improved, toxic and harmful substances in the solvent-based ink are eliminated, and the pollution of packaged goods is eliminated, and the isopropanol, the normal butanol, the ethanol, the pigment, the polyurethane resin and the water are mixed together, and the isopropanol, the water,The water-based ink prepared by mixing the n-propanol, the ethanol, the pigment, the polyurethane resin and the water has the advantages of high gloss, no corrosion to a printing plate, simple and convenient operation, low printing cost, good adhesion after printing, strong water resistance and rapid drying, the printed product is completely nontoxic, the production environment is environment-friendly, the length of an oven is 3m, and the volume of the oven body is 1.35m3The air volume in the box body is 2800-3600 m3the drying device has the advantages that the drying device can realize the rapid drying of the water-based ink, the ink layer combination fastness on the printing substrate is improved, the surface of a finished product is clean, the ink color is uniform, no obvious water wave is formed, the depth of engraving on the gravure roller is 20-30 microns, the quality of gravure can be improved, finally, the temperature of the drying oven is set according to the area M of the ink on the printing substrate, the drying efficiency and the drying quality can be optimized, and the uniformity of the ink color is ensured.
Detailed Description
An intaglio printing method using an aqueous ink, which prints the aqueous ink on a printing substrate by an intaglio printing press, the aqueous ink comprising the following components: the gravure printing machine comprises a frame, a gravure roller, a compression roller, a scraper, an oven and an ink fountain, wherein the oven is arranged at a discharge end of the frame, the ink fountain is arranged at a feed end of the oven, the gravure roller is arranged in the ink fountain, the compression roller is arranged above the gravure roller, the scraper is arranged in the ink fountain, carving is arranged on the gravure roller, the depth of the carving on the gravure roller is 20-30 um, the scraper is a ceramic scraper, the oven comprises a box body and an electric heating pipe arranged on the box body, the length of the box body is 3m, and the volume of the box body is 1.35m3the air volume in the box body is 2800-3600 m3The gravure printing method comprises the following steps in sequence:
The method comprises the following steps: sequentially adding isopropanol, normal propanol, ethanol, pigment and polyurethane resin into water, stirring and mixing to prepare water-based ink, and storing the prepared water-based ink into an ink fountain;
Step two: printing the water-based ink prepared by mixing in the step one on a printing substrate by a gravure printing machine, wherein the printing speed is not more than 220m/min, the pressure of a scraper is 1-2.5 KN, and the pressure of a compression roller is 0.2-0.3 Mpa;
Step three: drying the printing substrate coated in the second step through an oven, wherein when the printing ink area M on the printing substrate is more than or equal to 70%, the drying temperature of the oven is 80-110 ℃, when the printing ink area M on the printing substrate is more than 70% and more than or equal to 30%, the drying temperature of the oven is 80-100 ℃, and when the printing ink area M on the printing substrate is less than 30%, the drying temperature of the oven is 70-80 ℃;
step four: and (4) rolling the dried printing base material in the step three through a material receiving roller.
The water-based ink prepared by mixing isopropanol, normal propyl alcohol, ethanol, pigment, polyurethane resin and water has the advantages of high gloss, no corrosion to a printing plate, simple and convenient operation, low printing cost, good adhesion after printing, strong water resistance, quick drying and complete non-toxicity of printed products, and is more environment-friendly than solvent-based ink in the whole production process and social environment improvement because the solvent component is water, waste gas in the printing process can be directly discharged, the wastewater treatment is relatively simple, the treatment is easier and less toxic than the dangerous solid waste treatment of the solvent-based ink, and the pollution of packaged goods is eliminated because the water-based ink does not contain volatile organic solvent, the production environment is environment-friendly, secondly, the length of the oven is 3m, and the volume of the box body is 1.35m3the air volume in the box body is 2800-3600 m3The drying method has the advantages that the drying method can realize the rapid drying of the water-based ink, the combination fastness of the ink layer on the printing substrate is improved, the surface of the finished product is clean, the ink color is uniform, no obvious water wave is formed, the depth of carving on the gravure roller is 20-30 mu M, the quality of gravure can be improved, and finally, the drying setting is carried out according to the area M of the ink on the printing substrateThe temperature of the box can optimize the drying efficiency and the drying quality and ensure the uniformity of the ink color.
the gravure roller comprises a body and a copper coating coated on the body, wherein the engraving is arranged on the copper coating, so that the engraving can be quickly realized, the engraving quality is ensured, the body is prepared by a shaftless seamless steel pipe, the strength of the whole gravure roller can be improved, the hardness of the scraper is 700-800 Hv, ink stains can be quickly removed, the phenomena of incomplete ink stains and knife threads in the printing process are avoided, the printing effect is improved, the compression roller is a rubber compression roller, the hardness of the compression roller is 75-95 Hv, the effect of water-based ink gravure can be improved, the ink layer on a printing substrate can be ensured to have good bonding fastness, and the printing layer is ensured to have stable transition and no obvious step jump; the mesh points are clear and uniform; the printing substrate is a biaxially oriented polypropylene film with a surface tension value of more than or equal to 38 dyne or a biaxially oriented polyester film with a surface tension value of more than or equal to 48 dyne, different printing substrates can be selected according to different products, the practicability is good, the printing effect of the water-based ink is ensured, the method can be used for preparing environment-friendly composite films or composite films, and the pollution of packaged goods is eliminated.
The first embodiment is as follows:
The gravure printing method adopts water-based ink, the water-based ink is printed on a printing substrate through a gravure printing machine, the printing substrate is a biaxially oriented polypropylene film, the thickness of the printing substrate is 18um, and the width of the printing substrate is 820mm, and the water-based ink comprises the following components: isopropanol of 1 part by weight, normal propyl alcohol of 1 part by weight, ethanol of 1 part by weight, pigment of 10 parts by weight, polyurethane resin of 50 parts by weight and water of 10 parts by weight, gravure press includes frame, gravure roller, compression roller, scraper, oven and ink fountain, the oven sets up the discharge end in the frame, the ink fountain sets up the feed end at the oven, gravure roller sets up in the ink fountain, the compression roller sets up the top at gravure roller, the scraper sets up in the ink fountain, be equipped with the sculpture on gravure roller, the degree of depth of sculpture on gravure roller is 25um, the scraper is the ceramic scraper, the oven includes the box and sets up the electricity on the boxthe heating pipe, the length of box is 3m, the volume of box is 1.35m3The air volume in the box body is 3000m3The gravure printing method comprises the following steps in sequence:
The method comprises the following steps: sequentially adding isopropanol, normal propanol, ethanol, pigment and polyurethane resin into water, stirring and mixing to prepare water-based ink, and storing the prepared water-based ink into an ink fountain;
Step two: printing the water-based ink prepared by mixing in the step one on a printing substrate by a gravure printing machine at the printing speed of 180m/min, the pressure of a scraper is 1.5KN, and the pressure of a compression roller is 0.25 Mpa;
step three: drying the printing base material coated in the second step through an oven, wherein when the area M of the printing ink on the printing base material is equal to 85%, the drying temperature of the oven is 110 ℃;
Step four: and (4) rolling the dried printing base material in the step three through a material receiving roller.
Example two:
The gravure printing method adopts water-based ink, the water-based ink is printed on a printing substrate through a gravure printing machine, the printing substrate is a biaxially oriented polypropylene film, the thickness of the printing substrate is 18um, and the width of the printing substrate is 820mm, and the water-based ink comprises the following components: 5 parts by weight of isopropanol, 3 parts by weight of normal propyl alcohol, 2 parts by weight of ethanol, 15 parts by weight of pigment, 40 parts by weight of polyurethane resin and 15 parts by weight of water, gravure press includes frame, gravure roller, compression roller, scraper, oven and ink fountain, the oven sets up the discharge end in the frame, the ink fountain sets up the feed end at the oven, gravure roller sets up in the ink fountain, the compression roller sets up the top at gravure roller, the scraper sets up in the ink fountain, be equipped with the sculpture on gravure roller, the degree of depth of sculpture on gravure roller is 26um, the scraper is the ceramic scraper, the oven includes the box and sets up the electric heating pipe on the box, the length of box is 3m, the volume of box is 1.35m3The air volume in the box body is 3000m3The gravure printing method comprises the following steps in sequence:
The method comprises the following steps: sequentially adding isopropanol, normal propanol, ethanol, pigment and polyurethane resin into water, stirring and mixing to prepare water-based ink, and storing the prepared water-based ink into an ink fountain;
step two: printing the water-based ink prepared by mixing in the step one on a printing base material by a gravure printing machine, wherein the printing speed is equal to 150m/min, the pressure of a scraper is 2KN, and the pressure of a compression roller is 0.23 Mpa;
Step three: drying the printing substrate coated in the second step through an oven, wherein the area M of the printing ink on the printing substrate is 75%, and the drying temperature of the oven is 100 ℃;
Step four: and (4) rolling the dried printing base material in the step three through a material receiving roller.
example three:
The gravure printing method adopts water-based ink, the water-based ink is printed on a printing substrate through a gravure printing machine, the printing substrate is a biaxially oriented polyester film, the thickness of the printing substrate is 12um, and the width of the printing substrate is 820mm, and the water-based ink comprises the following components: 7 parts by weight of isopropanol, 4 parts by weight of normal propyl alcohol, 2.5 parts by weight of ethanol, 17 parts by weight of pigment, 45 parts by weight of polyurethane resin and 18.5 parts by weight of water, gravure press includes frame, gravure roller, compression roller, scraper, oven and ink duct, the oven sets up the discharge end in the frame, the ink duct sets up the feed end at the oven, gravure roller sets up in the ink duct, the compression roller sets up the top at gravure roller, the scraper sets up in the ink duct, be equipped with the sculpture on gravure roller, the degree of depth of sculpture on gravure roller is 27um, and the scraper is the pottery scraper, the oven includes the box and sets up the electric heating pipe on the box, the length of box is 3m, the volume of box is 1.35m3The air volume in the box body is 3200m3the gravure printing method comprises the following steps in sequence:
the method comprises the following steps: sequentially adding isopropanol, normal propanol, ethanol, pigment and polyurethane resin into water, stirring and mixing to prepare water-based ink, and storing the prepared water-based ink into an ink fountain;
step two: printing the water-based ink prepared by mixing in the step one on a printing substrate by a gravure printing machine, wherein the printing speed is 180m/min, the pressure of a scraper is 1KN, and the pressure of a compression roller is 0.2 Mpa;
Step three: and (4) drying the printing base material coated in the step two through an oven, wherein when the printing ink area M on the printing base material is equal to 60%, the drying temperature of the oven is 85 ℃.
Step four: and (4) rolling the dried printing base material in the step three through a material receiving roller.
Example four:
the gravure printing method adopts water-based ink, the water-based ink is printed on a printing substrate through a gravure printing machine, the printing substrate is a biaxially oriented polypropylene film, the thickness of the printing substrate is 18um, and the width of the printing substrate is 820mm, and the water-based ink comprises the following components: 10 parts by weight of isopropanol, 5 parts by weight of normal propyl alcohol, 3 parts by weight of ethanol, 20 parts by weight of pigment, 30 parts by weight of polyurethane resin and 20 parts by weight of water, gravure press includes frame, gravure roller, compression roller, scraper, oven and ink fountain, the oven sets up the discharge end in the frame, the ink fountain sets up the feed end at the oven, gravure roller sets up in the ink fountain, the compression roller sets up the top at gravure roller, the scraper sets up in the ink fountain, be equipped with the sculpture on gravure roller, the degree of depth of sculpture on gravure roller is 20um, the scraper is the ceramic scraper, the oven includes the box and sets up the electric heating pipe on the box, the length of box is 3m, the volume of box is 1.35m3The air quantity in the box body is 2800m3The gravure printing method comprises the following steps in sequence:
The method comprises the following steps: sequentially adding isopropanol, normal propanol, ethanol, pigment and polyurethane resin into water, stirring and mixing to prepare water-based ink, and storing the prepared water-based ink into an ink fountain;
Step two: printing the water-based ink prepared by mixing in the step one on a printing substrate by a gravure printing machine, wherein the printing speed is 180m/min, the pressure of a scraper is 2.5KN, and the pressure of a compression roller is 0.3 Mpa;
Step three: drying the printing base material coated in the second step through an oven, wherein when the area M of the printing ink on the printing base material is equal to 29%, the drying temperature of the oven is 70 ℃;
step four: and (4) rolling the dried printing base material in the step three through a material receiving roller.
the appearance of the printing base materials prepared in the first embodiment, the second embodiment, the third embodiment and the fourth embodiment is detected according to GB/T7707-2008; the solvent residue is detected according to the method required by GB/T10004-2008 'Plastic composite film for packaging, bag dry method compounding and extrusion compounding', and the detection result is shown in the table I.
watch 1
Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.
Claims (6)
1. A gravure printing method using water-based ink is characterized in that: the gravure printing method prints water-based ink on a printing substrate through a gravure printing machine, wherein the water-based ink comprises the following components: the gravure printing machine comprises a rack, a gravure roller, a compression roller, a scraper, an oven and an ink fountain, wherein the oven is arranged at the discharge end of the rack, the ink fountain is arranged at the feed end of the oven, the gravure roller is arranged in the ink fountain, and the compression roller is arranged in the gravure rollerThe top of (1), the scraper sets up in the ink fountain, be equipped with the sculpture on the gravure roll, the degree of depth of sculpture on the gravure roll is 20 ~ 30um, the scraper is the ceramic scraper, the oven includes the box and sets up the electric heating pipe on the box, the length of box is 3m, the volume of box is 1.35m3the air volume in the box body is 2800-3600 m3The gravure printing method comprises the following steps in sequence:
the method comprises the following steps: sequentially adding isopropanol, normal propanol, ethanol, pigment and polyurethane resin into water, stirring and mixing to prepare water-based ink, and storing the prepared water-based ink into an ink fountain;
step two: printing the water-based ink prepared by mixing in the step one on a printing substrate by a gravure printing machine, wherein the printing speed is not more than 220m/min, the pressure of a scraper is 1-2.5 KN, and the pressure of a compression roller is 0.2-0.3 Mpa;
step three: drying the printing substrate coated in the second step through an oven, wherein when the printing ink area M on the printing substrate is more than or equal to 70%, the drying temperature of the oven is 80-110 ℃, when the printing ink area M on the printing substrate is more than 70% and more than or equal to 30%, the drying temperature of the oven is 80-100 ℃, and when the printing ink area M on the printing substrate is less than 30%, the drying temperature of the oven is 70-80 ℃;
Step four: and (4) rolling the dried printing base material in the step three through a material receiving roller.
2. a gravure printing method using an aqueous ink according to claim 1, characterized in that: the gravure printing roller comprises a body and a copper coating coated on the body, and the engraving is arranged on the copper coating.
3. a gravure printing method using an aqueous ink according to claim 2, characterized in that: the body is made of a shaftless seamless steel pipe.
4. A gravure printing method using an aqueous ink according to claim 1, characterized in that: the hardness of the scraper is 700-800 Hv.
5. a gravure printing method using an aqueous ink according to claim 1, characterized in that: the compression roller is a rubber compression roller, and the hardness of the compression roller is 75-95 Hv.
6. A gravure printing method using an aqueous ink according to claim 1, characterized in that: the printing substrate is a biaxially oriented polypropylene film with a surface tension value of more than or equal to 38 dyne or a biaxially oriented polyester film with a surface tension value of more than or equal to 48 dyne.
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| CN112046161A (en) * | 2020-08-31 | 2020-12-08 | 安徽天翔高新特种包装材料集团有限公司 | Gravure printing and UV synchronous overprinting process |
| CN112549803A (en) * | 2020-11-25 | 2021-03-26 | 无锡市华美达印刷有限公司 | Intaglio printing method |
| CN114106625A (en) * | 2021-10-27 | 2022-03-01 | 河南省邮电科技有限公司 | Sandalwood ink printing process |
| CN114523778A (en) * | 2021-12-30 | 2022-05-24 | 山东东宇鸿翔装饰材料有限公司 | Wood veneer gravure continuous printing process |
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| CN111546798A (en) * | 2020-05-12 | 2020-08-18 | 黎勇飞 | Printing process of PVC tablecloth |
| CN112046161A (en) * | 2020-08-31 | 2020-12-08 | 安徽天翔高新特种包装材料集团有限公司 | Gravure printing and UV synchronous overprinting process |
| CN112549803A (en) * | 2020-11-25 | 2021-03-26 | 无锡市华美达印刷有限公司 | Intaglio printing method |
| CN114106625A (en) * | 2021-10-27 | 2022-03-01 | 河南省邮电科技有限公司 | Sandalwood ink printing process |
| CN114523778A (en) * | 2021-12-30 | 2022-05-24 | 山东东宇鸿翔装饰材料有限公司 | Wood veneer gravure continuous printing process |
| CN114523778B (en) * | 2021-12-30 | 2024-03-26 | 山东东宇鸿翔装饰材料有限公司 | Continuous printing process for wood veneer intaglio plate |
| CN117601580A (en) * | 2024-01-15 | 2024-02-27 | 广东恒泽科技股份有限公司 | Water-based oil black green printing process for paperboard |
| CN117601580B (en) * | 2024-01-15 | 2024-04-23 | 广东恒泽科技股份有限公司 | Water-based oil black green printing process for paperboard |
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Application publication date: 20191213 |