CN109094226B - Gravure printing process for paper packaging box and printing equipment thereof - Google Patents
Gravure printing process for paper packaging box and printing equipment thereof Download PDFInfo
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- CN109094226B CN109094226B CN201810590052.7A CN201810590052A CN109094226B CN 109094226 B CN109094226 B CN 109094226B CN 201810590052 A CN201810590052 A CN 201810590052A CN 109094226 B CN109094226 B CN 109094226B
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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
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/044—Drying sheets, e.g. between two printing stations
- B41F23/0443—Drying sheets, e.g. between two printing stations after printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/044—Drying sheets, e.g. between two printing stations
- B41F23/045—Drying sheets, e.g. between two printing stations by radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/002—Sheet printing presses
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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
- C09D11/03—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
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Chemical & Material Sciences (AREA)
- Printing Methods (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention discloses a gravure printing process for a paper packaging box, which comprises the steps of preparing ink, and coating the surface of a printing plate with the prepared ink; carrying out ink scraping and discharging treatment on the printing plate which is fully coated with the ink; printing paper used by the paper packaging box by using the printing plate after ink scraping treatment; drying the printed paper; and (6) rolling paper. In addition, the gravure printing equipment for the paper packaging box is also disclosed. According to the invention, a plurality of materials capable of increasing viscosity and raw materials with faint scent are added into the printing ink, so that the printing ink has better definition in the printing process, no unpleasant smell exists, and no toxic substance is volatilized; the medium-frequency induction heating mode is adopted in the printing process, the heating temperature is more stably controlled, the effect after printing is better, the procedures of ink scraping and ink discharging are adopted, the phenomenon that ink carried by a doctor blade drips on the blank part of the surface of a printing plate again is avoided, and the quality of gravure printing is further improved.
Description
Technical Field
The invention relates to the technical field of packaging box printing, in particular to a gravure printing process for a paper packaging box and printing equipment thereof.
Background
Intaglio printing (Intaglio printing) is to coat the whole surface of printing plate with ink, then to remove the ink from the blank part by a special ink scraping mechanism, so that the ink is only remained in the cells of the image-text part, and then to transfer the ink to the surface of printing stock under the action of larger pressure, so as to obtain the printed matter. Gravure printing belongs to direct printing. The image-text part of the printing plate is concave, the concave degree is different with the depth of the image layer, and the blank part of the printing plate is convex and is on the same plane.
Although the doctor blade in the gravure printing equipment of the traditional paper packaging box can scrape off ink on the blank part on the surface of the printing plate, the ink is easy to be brought to the blank part on the surface of the printing plate again from the side surface of the doctor blade because the ink is high in viscosity, and the printing definition is reduced. In addition, the ink used in the traditional gravure printing process has simple components, bad smell and insufficient viscosity, which results in poor printing quality.
Disclosure of Invention
The invention aims to provide a gravure printing process for a paper packaging box and printing equipment thereof, which solve the problems of simple components, insufficient viscosity, unpleasant smell and even toxicity of the traditional gravure printing ink and solve the problems of unclear printing and poor quality caused by incomplete ink scraping of the traditional gravure printing equipment.
The invention realizes the purpose through the following technical scheme:
a gravure printing process for a paper packaging box comprises the following steps
Step a: preparing printing ink, and coating the prepared printing ink on the surface of a printing plate;
step b: carrying out ink scraping and discharging treatment on the printing plate which is fully coated with the ink;
step c: printing paper used by the paper packaging box by using the printing plate after ink scraping treatment;
step d: drying the printed paper;
step e: and (6) rolling paper.
The ink is further improved in that the ink comprises, by weight, 4-6 parts of kason, 2-4 parts of acetyl tributyl citrate, 1-5 parts of polyvinyl alcohol, 5-7 parts of nano silicon, 6-8 parts of water-soluble acrylic resin, 3-5 parts of sodium carboxymethylcellulose, 6-10 parts of balsam, 10-12 parts of a coloring pigment and 10-15 parts of deionized water.
The ink is further improved in that the ink comprises, by weight, 5 parts of kason, 3 parts of acetyl tributyl citrate, 3 parts of polyvinyl alcohol, 6 parts of nano-silicon, 7 parts of water-soluble acrylic resin, 4 parts of sodium carboxymethyl cellulose, 8 parts of balsam alcohol, 11 parts of coloring pigment and 12 parts of deionized water.
The further improvement is that the printing plate adopts a cylinder concave printing plate, and the printing pressure is controlled to be 4.5-4.8 MPa.
The further improvement is that the drying treatment specifically adopts a drying mode of medium-frequency induction heating, and the heating temperature is 55-60 ℃.
A gravure printing device for paper packaging boxes comprises a paper feeding mechanism, a printing mechanism and a winding mechanism which are arranged in sequence;
printing mechanism has a plurality of groups, and every group printing mechanism includes ink groove, cylinder printing plate, ink scraping knife, printing roller and drying oven, the cylinder printing plate is located in the ink groove, the side of cylinder printing plate is located to the ink scraping knife, and the edge of a knife and the cylinder printing plate contact of ink scraping knife, the top of cylinder printing plate is located to the printing roller, and keeps the contact of certain pressure with the cylinder printing plate, the drying oven is intermediate frequency induction heating drying oven, and it is located on every group printing mechanism's play paper passageway.
The ink scraping knife is further improved in that the ink scraping knife comprises a main knife and edge knives, the contact included angle between the main knife and the cylinder printing plate is 40-45 degrees, and the edge knives are connected to the edges of the two sides of the main knife.
In a further improvement, the edge knife is made of a nano-silica material.
The further improvement is that the surface of the edge knife is full of mushroom-shaped lugs.
A further improvement is that the ratio of the crown diameter of the mushroom to the gap distance between adjacent mushroom is 1.5: 1.
The invention has the beneficial effects that: various materials capable of increasing viscosity and raw materials with faint scent are added into the printing ink, so that the printing ink has better definition in the printing process, no unpleasant smell and no volatilization of toxic substances; the medium-frequency induction heating mode is adopted in the printing process, the heating temperature is more stably controlled, the effect after printing is better, the procedures of ink scraping and ink discharging are adopted, the phenomenon that ink carried by a doctor blade drips on the blank part of the surface of a printing plate again is avoided, and the quality of gravure printing is further improved.
Drawings
FIG. 1 is a schematic overall structure diagram of a gravure printing device for a paper packaging box;
FIG. 2 is a schematic view of the installation of the doctor blade;
FIG. 3 is a schematic view of the structure of the edge knife;
the printing machine comprises a paper feeding mechanism 1, a printing mechanism 2, an ink tank 21, a roller printing plate 22, a doctor blade 23, a main blade 231, an edge blade 232, a printing roller 24, a drying oven 25 and a winding mechanism 3.
Detailed Description
The present application is described in further detail below with reference to examples, and it should be noted that the following detailed description is provided for further explanation of the present application and should not be construed as limiting the scope of the present application, and that certain insubstantial modifications and adaptations of the present application may be made by those skilled in the art based on the above-mentioned disclosure.
Example 1
A gravure printing process for a paper packaging box comprises the following steps
Step a: preparing printing ink, and coating the prepared printing ink on the surface of a printing plate; the printing ink comprises the following raw materials, by weight, 4 parts of kason, 2 parts of acetyl tributyl citrate, 1 part of polyvinyl alcohol, 5 parts of nano silicon, 6 parts of water-soluble acrylic resin, 3 parts of sodium carboxymethylcellulose, 6 parts of resinol, 10 parts of coloring pigment and 10 parts of deionized water;
step b: carrying out ink scraping and discharging treatment on the printing plate which is fully coated with the ink;
step c: printing paper used for the paper packaging box by using the printing plate after ink scraping treatment, wherein the printing pressure is controlled to be 4.6 Mpa;
step d: drying the printed paper, wherein the drying adopts a medium-frequency induction heating drying mode, and the heating temperature is 58 ℃;
step e: and (6) rolling paper.
Example 2
A gravure printing process for a paper packaging box comprises the following steps
Step a: preparing printing ink, and coating the prepared printing ink on the surface of a printing plate; the printing ink comprises the following raw materials, by weight, 5 parts of kason, 3 parts of acetyl tributyl citrate, 3 parts of polyvinyl alcohol, 6 parts of nano silicon, 7 parts of water-soluble acrylic resin, 4 parts of sodium carboxymethyl cellulose, 8 parts of resinol, 11 parts of a coloring pigment and 12 parts of deionized water;
step b: carrying out ink scraping and discharging treatment on the printing plate which is fully coated with the ink;
step c: printing paper used for the paper packaging box by using the printing plate after ink scraping treatment, wherein the printing pressure is controlled to be 4.6 Mpa;
step d: drying the printed paper, wherein the drying adopts a medium-frequency induction heating drying mode, and the heating temperature is 58 ℃;
step e: and (6) rolling paper.
Example 3
A gravure printing process for a paper packaging box comprises the following steps
Step a: preparing printing ink, and coating the prepared printing ink on the surface of a printing plate; the printing ink comprises the following raw materials, by weight, 6 parts of kason, 4 parts of acetyl tributyl citrate, 5 parts of polyvinyl alcohol, 7 parts of nano silicon, 8 parts of water-soluble acrylic resin, 5 parts of sodium carboxymethyl cellulose, 10 parts of resinol, 12 parts of coloring pigment and 15 parts of deionized water;
step b: carrying out ink scraping and discharging treatment on the printing plate which is fully coated with the ink;
step c: printing paper used for the paper packaging box by using the printing plate after ink scraping treatment, wherein the printing pressure is controlled to be 4.6 Mpa;
step d: drying the printed paper, wherein the drying adopts a medium-frequency induction heating drying mode, and the heating temperature is 58 ℃;
step e: and (6) rolling paper.
As shown in fig. 1, the gravure printing equipment for the paper packaging box comprises a paper feeding mechanism 1, a printing mechanism 2 and a winding mechanism 3 which are arranged in sequence.
Wherein, printing mechanism 2 has a plurality of groups, every group printing mechanism 2 includes ink groove 21, cylinder printing plate 22, ink scraping knife 23, printing roller 24 and drying oven 25, cylinder printing plate 22 is located in ink groove 21, ink scraping knife 23 locates the side of cylinder printing plate 22, and the edge of a knife of ink scraping knife 23 and cylinder printing plate 22 contact, printing roller 24 locates the top of cylinder printing plate 22, and keep the contact of certain pressure with cylinder printing plate 22, pressure control is about 4.6Mpa, drying oven 25 is intermediate frequency induction heating drying oven, it is located on every group printing mechanism 2's the play paper passageway.
As shown in fig. 2, the doctor blade 23 includes a main blade 231 and an edge blade 232, the main blade 231 is in contact with the printing plate 22 at an angle of 40 ° to 45 °, preferably 45 °, in which case the ink can be scraped off more easily, the edge blade 232 is connected to both side edges of the main blade 231, and the edge blade 232 wraps a portion of the side edge of the printing plate 22. The edge knife 232 is made of nano-silica material, which has better oleophobic property.
In addition, as shown in fig. 3, mushroom-shaped protrusions are distributed on the surface of the edge knife 232, and the ratio of the diameter of the crown of the mushroom-shaped protrusion to the gap distance between adjacent mushroom-shaped protrusions is 1.5:1, so that the oil repellency is optimal.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (3)
1. The gravure printing process of the paper packaging box is characterized in that: the method comprises the following steps:
step a: preparing printing ink, and coating the surface of a printing plate with the prepared printing ink, wherein the printing ink comprises, by weight, 4-6 parts of kason, 2-4 parts of acetyl tributyl citrate, 1-5 parts of polyvinyl alcohol, 5-7 parts of nano silicon, 6-8 parts of water-soluble acrylic resin, 3-5 parts of sodium carboxymethyl cellulose, 6-10 parts of resinol, 10-12 parts of a coloring pigment and 10-15 parts of deionized water;
step b: carrying out ink scraping and discharging treatment on the printing plate which is fully coated with the ink;
step c: printing paper used by the paper packaging box by using the printing plate after ink scraping treatment;
step d: drying the printed paper, wherein the drying treatment specifically adopts a medium-frequency induction heating drying mode, and the heating temperature is 55-60 ℃;
step e: rolling paper;
the gravure printing process of the paper packaging box adopts gravure printing equipment of the paper packaging box to print, wherein the gravure printing equipment of the paper packaging box comprises a paper feeding mechanism (1), a printing mechanism (2) and a winding mechanism (3) which are arranged in sequence;
printing mechanism (2) have a plurality of groups, and every group printing mechanism (2) include ink groove (21), cylinder printing plate (22), ink scraping knife (23), printing roller (24) and drying oven (25), ink groove (21) is located in cylinder printing plate (22), the side of cylinder printing plate (22) is located in ink scraping knife (23), and the edge of a knife and cylinder printing plate (22) contact of ink scraping knife (23), the top of cylinder printing plate (22) is located in printing roller (24), and keeps the contact of certain pressure with cylinder printing plate (22), drying oven (25) are intermediate frequency induction heating drying oven, and it locates on the play paper passageway of every group printing mechanism (2);
the ink scraping knife (23) comprises a main knife (231) and an edge knife (232), a contact included angle between the main knife (231) and the roller printing plate (22) is 40-45 degrees, the edge knife (232) is connected to the edges of the two sides of the main knife (231), the edge knife (232) wraps one part of the side end face of the roller printing plate (22), the edge knife (232) is in a flat strip shape, the edge knife (232) is made of nano silicon dioxide materials, mushroom-shaped protruding blocks are fully distributed on the surface of the edge knife (232), and the ratio of the diameter of a crown of each mushroom-shaped protruding block to the gap distance between the adjacent mushroom-shaped protruding blocks is 1.5: 1.
2. The intaglio printing process for paper packaging boxes according to claim 1, characterized in that: the ink comprises the following raw materials, by weight, 5 parts of kason, 3 parts of acetyl tributyl citrate, 3 parts of polyvinyl alcohol, 6 parts of nano silicon, 7 parts of water-soluble acrylic resin, 4 parts of sodium carboxymethyl cellulose, 8 parts of resinol, 11 parts of a coloring pigment and 12 parts of deionized water.
3. The intaglio printing process for paper packaging boxes according to claim 1, characterized in that: the printing pressure is controlled at 4.5-4.8 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810590052.7A CN109094226B (en) | 2018-06-08 | 2018-06-08 | Gravure printing process for paper packaging box and printing equipment thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810590052.7A CN109094226B (en) | 2018-06-08 | 2018-06-08 | Gravure printing process for paper packaging box and printing equipment thereof |
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| Publication Number | Publication Date |
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| CN109094226A CN109094226A (en) | 2018-12-28 |
| CN109094226B true CN109094226B (en) | 2021-01-08 |
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| CN201810590052.7A Expired - Fee Related CN109094226B (en) | 2018-06-08 | 2018-06-08 | Gravure printing process for paper packaging box and printing equipment thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110901247A (en) * | 2019-12-26 | 2020-03-24 | 苏州市深广印刷有限公司 | Green efficient gravure printing process |
| CN111347758B (en) * | 2020-04-28 | 2022-03-08 | 景德镇陶瓷大学 | Gravure printing process and equipment for paper packaging box |
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| US5603263A (en) * | 1995-09-08 | 1997-02-18 | Heidelberger Druckmaschinen Ag | Scraper blade and ink scavenger for printing presses |
| DE29718387U1 (en) * | 1996-10-25 | 1998-01-22 | Koenig & Bauer Albert Ag | Squeegee for a rotary printing machine |
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