CN110588201A - Green and environment-friendly micro-nano structure color packaging product and preparation method thereof - Google Patents
Green and environment-friendly micro-nano structure color packaging product and preparation method thereof Download PDFInfo
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- CN110588201A CN110588201A CN201910739297.6A CN201910739297A CN110588201A CN 110588201 A CN110588201 A CN 110588201A CN 201910739297 A CN201910739297 A CN 201910739297A CN 110588201 A CN110588201 A CN 110588201A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/02—Engraving; Heads therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
- B41F13/18—Impression cylinders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
- B41F19/08—Simultaneous moulding and 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
- B41F23/0483—Drying combined with cooling
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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
- B41F9/02—Rotary intaglio printing presses for multicolour printing
- B41F9/023—Web printing presses
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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
- B41F9/06—Details
- B41F9/08—Wiping mechanisms
- B41F9/10—Doctors, scrapers, or like devices
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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
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
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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
- B41M7/0027—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or layers by lamination or by fusion of the coatings or layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/42—Applications of coated or impregnated materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/12—Coating on the layer surface on paper layer
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Printing Methods (AREA)
Abstract
The invention discloses a green and environment-friendly micro-nano structure color packaging product and a preparation method thereof, wherein the preparation method comprises the following steps: step S1, preparing a plastic film and base paper; step S2, designing a micro-nano structure color pattern and text and preparing a printing plate; step S3, local image-text printing and drying are carried out on the film by adopting water-based ink; step S4, full coating and drying are carried out by adopting the water-based resin paint; step S5, carrying out image-text imprinting by adopting a micro-nano structure color printing plate; step S6, evaporating the film with the copied pictures and texts by aluminum or zinc sulfide through vacuum medium plating equipment; step S7, compounding the evaporated film with base paper through aqueous resin emulsion, and drying and stripping; step S8, coating a layer of transparent resin coating layer on the surface of the paper carrying the pictures and texts; and step S9, carrying out subsequent processing on the paper product obtained in the step S8. The invention avoids VOCs environmental pollution caused by using a large amount of printing ink and chemical solvent in traditional printing modes such as gravure printing, offset printing and the like, and avoids the safety risk of products.
Description
Technical Field
The invention relates to the technical field of printed packaging, in particular to a green and environment-friendly micro-nano structure color printed packaging product for tobacco packaging, wine packaging, food packaging, cosmetic packaging and pharmaceutical packaging and a manufacturing method thereof.
Background
At present, the packaging products such as tobacco packaging, wine packaging, food packaging, cosmetics, medicine packaging and the like on the market are all realized by adopting a traditional printing mode, a large amount of printing ink, solvent, alcohol, ethyl acetate, benzene, ether and other chemicals are used in the printing process, and a large amount of Organic Solvents (VOCs) are volatilized and discharged in the drying and curing processes, so that the social environment is polluted, and the health of production workers is not facilitated. In recent years, the emission of VOCs in the printing industry is strictly controlled and managed, all the places have corresponding emission standards, and all printing enterprises are also respectively provided with corresponding VOCs treatment equipment to carry out treatment and then emit the VOCs. Even so, the printing industry is suspended during some large international meetings in the country, such as during G20 meetings. Some developed cities even have the phenomenon that printing enterprises are moved to western laggard areas, but the methods and treatment measures only carry out retreatment in the production process to control emission, so that the treatment is temporary and permanent, and the enterprise burden is increased.
In addition, in the traditional printing packaging product, a large amount of printing ink and solvent are adopted in the production process, so that the final product has the problems of solvent residue, harmful substance migration and the like, great product safety risks are brought to cigarette packaging, food packaging, medicine packaging and the like, and the solvent residue limit standard of the product is established in all related industries for product safety control, for example, the limit standard of volatile organic compounds in YC263-2016 cigarette sticks and box packaging paper is released in the tobacco packaging industry for product safety control.
Therefore, a novel green and environment-friendly printed matter manufacturing method is developed from the source, the micro-nano structural color is adopted to show the image-text color effect, and green and environment-friendly production from the source becomes the problem which is urgently needed to be solved at present.
Disclosure of Invention
The invention aims to solve the technical problem of providing a green and environment-friendly micro-nano structure color packaging product and a preparation method thereof, and solves the problems that a large amount of Volatile Organic Compounds (VOCs) are generated in the traditional printing production process and discharged, the symptoms and root causes are eliminated in the treatment process, the environment is polluted, the health of workers is harmed, and harmful Substances (VOCs) remain in the packaging product.
In order to solve the technical problems, the invention adopts the following technical scheme: a preparation method of a green environment-friendly micro-nano structure color packaging product comprises the following steps:
step S1, preparing a plastic film and base paper;
s2, designing a micro-nano structure color image and text and preparing a printing plate, after designing the needed micro-nano structure color image and text, adopting a multi-wavelength laser to perform laser direct writing exposure on a photosensitive glass plate in different wavelengths and light wave cycle frequency ranges, recording images and texts with different depth shapes, and copying a metalized printing plate;
step S3, adopting water-based ink to print and dry local images and texts on the film, or skipping step S3;
step S4, full coating and drying are carried out by adopting the water-based resin paint;
step S5, carrying out image-text imprinting by adopting a micro-nano structure color printing plate;
step S6, evaporating the film with the copied pictures and texts by aluminum or zinc sulfide through vacuum medium plating equipment;
step S7, compounding the evaporated film with base paper through aqueous resin emulsion, drying and stripping to transfer the pictures and texts on the film to the base paper;
step S8, coating a layer of transparent resin coating layer on the surface of the paper carrying the pictures and texts for friction-resistant protection;
and S9, performing subsequent processing on the paper product obtained in the step S8 to prepare a micro-nano structure color packaging product.
Optionally, the plastic film is a BOPP or PET film, and the base paper is coated paper or white cardboard.
Optionally, in step S2, the light wave period frequency of the multi-wavelength laser is in the range of 300-15000 nm, the wavelength is in the range of 390-760nm, and the engraving depth on the photosensitive glass plate is in the range of 100-1000 nm.
Optionally, in step S3, the water-based ink local image-text printing is performed by using an electronic engraved intaglio at a vehicle speed of 30-100 m/min.
Optionally, in step S4, an electronic engraved plate or an anilox roller is used to coat the aqueous resin coating at a vehicle speed of 30-100 m/min, where the aqueous resin coating is an aqueous polyurethane resin emulsion or a UV epoxy resin coating.
Optionally, in the step S5, the coating prepared in the step S4 is softened at a temperature of 100-.
Optionally, in step S6, the vacuum reaches 2.0 x 10-2And (3) performing aluminum or zinc sulfide evaporation under the conditions that the refrigeration capacity reaches-120 ℃, wherein the thickness of a coating is 35-45 nm.
Optionally, in step S7, the base paper and the film are combined and peeled at a temperature of 80-120 ℃ and a speed of 80-120 m/min, and the aqueous resin emulsion is an aqueous acrylic emulsion or an aqueous polyurethane emulsion.
Optionally, in step S8, the transparent resin coating layer is coated at a temperature of 80-120 ℃ and a speed of 80-120 m/min, and the transparent resin coating is a water-based acrylic resin emulsion or a UV epoxy resin emulsion.
The invention also provides a green and environment-friendly micro-nano structure color package product, which is prepared by the preparation method of the green and environment-friendly micro-nano structure color package product.
The invention adopts micro-nano structure color to express the image-text color, the nano-scale microstructure expresses the image-text gloss and color through the actions of the nano-scale microstructure and light wave (such as refraction, diffraction, interference, reflection, scattering, resonance and the like) in the range of 300-15000 nm and the engraving depth in the range of 100-1000 nm, and the nano-scale microstructure can completely enhance or decorate the effect by using no ink or using a few environmental-friendly inks locally, thereby avoiding the VOCs environmental pollution caused by using a large amount of ink and chemical solvents in the traditional printing modes of gravure printing, offset printing and the like, avoiding the safety risk of products, realizing green and environmental-friendly printing from the source, and compared with the traditional printing packaging products, the invention has the following beneficial effects:
1. the present invention generates color through the action of nanometer level micro structure and light wave, and the traditional printing adopts color pigment in ink to express color.
2. The invention adopts the nanometer microstructure to show the color of the optical image-text, and has good simplifying effect of the working procedure. The traditional printed packaging products are produced by mutually using different printing such as offset printing, gravure printing, flexo printing, silk-screen printing and the like, and have the defects of complex process, long flow, large consumption of ink chemicals and the like.
3. The method is environment-friendly and pollution-free, a large amount of printing ink and solvent are not needed in the whole production process, the production process is environment-friendly and free of VOCs emission, and the method does not pollute the environment and does not cause health hazards to workers.
4. The product is safe, and the finally prepared packaging product does not use a large amount of printing ink and solvent, so that solvent residue is avoided, particularly harmful substances are prevented from migrating to cigarette packages, food packages and the like, and the safety performance of the product is improved.
The following detailed description of the present invention will be provided in conjunction with the accompanying drawings.
Drawings
The invention is further described with reference to the accompanying drawings and the detailed description below:
FIG. 1 is a schematic structural diagram of a micro-nano structure color film production device adopted by the preparation method of the invention;
FIG. 2 is a schematic structural diagram of a green environment-friendly micro-nano structure color package product of the invention;
FIG. 3 is a schematic structural diagram of a green environment-friendly micro-nano structure color package product.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be understood that the features of the following examples and embodiments may be combined with each other without conflict.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 2, the green and environment-friendly micro-nano structure color package product, as an embodiment, comprises a paper layer 101, a water-based coating layer 102, a metal aluminum layer 103, a micro-nano structure layer 104, a first coating layer 105, a printing color layer 106, and a second coating layer 107, which are sequentially arranged. Which contains the locally necessary printing color layers.
Referring to fig. 3, the green and environment-friendly micro-nano structure color package product, as an embodiment, comprises a paper layer 101, a water-based coating layer 102, a metal aluminum layer 103, a micro-nano structure layer 104, a first coating layer 105, and a second coating layer 107, which are arranged in sequence. Which does not contain a printed color layer.
The micro-nano structure color is also called Physical color (Physical color), and is a lustrous color which is generated by the micro-nano structure and the action of light waves (such as refraction, diffraction, interference, reflection, scattering, resonance and the like) and is not related to pigment coloring.
In order to effectively solve the problems that a large amount of VOCs organic volatile matters are generated in the existing printing process, the treatment is temporary or permanent, the environment is polluted and the health of workers is harmed, and VOCs harmful substances remain in a packaging product, the invention provides a preparation method of a green and environment-friendly micro-nano structure color packaging product, which can be used for preparing the packaging product shown in figures 2 and 3, and comprises the following steps:
step S1, preparing a plastic film and base paper;
s2, designing micro-nano structure color graphics and text and preparing a printing plate, after designing required micro-nano structure color graphics and text through micro-nano structure color theory, performing laser direct writing exposure on a photosensitive glass plate by adopting a multi-wavelength laser in different wavelengths and light wave cycle frequency ranges, recording graphics and text with different depth shapes, and copying a metalized printing plate;
step S3, according to the actual image-text color effect requirement, the required local image-text printing and drying can be carried out on the film by adopting water-based ink, or according to the actual effect requirement, the local image-text can not be printed, namely the step S3 is directly skipped;
s4, full-page coating and drying are carried out by adopting water-based resin paint, and the pictures and texts printed in the S3 are protected;
s5, carrying out image-text stamping by adopting a micro-nano structure color printing plate, so that the image-text of the step S3 is aligned with the image-text of the micro-nano structure color stamping, the copying of the required image-text by the film is completed, and the required color image-text is arranged on the film;
s6, evaporating aluminum or zinc sulfide on the film with the copied pictures and texts through vacuum medium plating equipment to enhance the color effect of the pictures and texts and protect the pictures and texts;
step S7, compounding the evaporated film with base paper through aqueous resin emulsion, drying and stripping to transfer the pictures and texts on the film to the base paper;
step S8, coating a layer of transparent resin coating layer on the surface of the paper carrying the pictures and texts for friction-resistant protection;
and S9, performing subsequent processing, such as gold stamping, concave-convex, die cutting and the like, on the paper product obtained in the step S8, and preparing the micro-nano structure color packaging product.
The plastic film can be a BOPP or PET film, and the base paper can be coated paper or white cardboard.
In step S2, the light wave period frequency of the multi-wavelength laser is in the range of 300-15000 nm, the wavelength is in the range of 390-760nm, and the engraving depth is 100-1000 nm. And different colors are formed through different microstructure carving shapes, different microstructure depths and light wave effects (refraction, diffraction, interference, reflection, scattering, resonance and the like), and then the recorded photosensitive glass plate is sprayed with metal, so that the micro-nano structure color-pattern metal printing plate is manufactured.
In the step S3, the water-based ink local graphic printing adopts an electronic engraving intaglio and is printed under the condition of the vehicle speed of 30-100 m/min. The color of the ink can be accurate overprinting of various colors, and pure water is used as a solvent in the process, so that VOCs are not volatilized.
In the step S4, the aqueous resin coating is an aqueous polyurethane resin emulsion or a UV epoxy resin coating, and is applied by an electronic engraved plate or an anilox roll at a vehicle speed of 30-100 m/min. The coating layer has the function of protecting the pictures and texts in the step S3, and the resin coating is arranged outside the ink layer, so that the printing ink can be protected and isolated, the ink is prevented from changing color in a high-temperature vacuum environment close to 1200 ℃ when the vacuum aluminizing or zinc sulfide is carried out, and the coating layer is also a carrier of the pictures and texts in the step S5.
In the step S5, the coating prepared in the step S4 is softened at the temperature of 100-.
In step S6, the vacuum reaches 2.0 x 10-2And (3) performing aluminum or zinc sulfide evaporation under the conditions that the refrigeration capacity reaches-120 ℃, wherein the thickness of a coating is 35-45 nm.
In the step S7, the base paper and the film are compounded and peeled at the temperature of 80-120 ℃ and the vehicle speed of 80-120 m/min, and the water-based resin emulsion is water-based acrylic emulsion or water-based polyurethane emulsion.
In the step S8, a transparent resin coating layer is coated at the temperature of 80-120 ℃ and the vehicle speed of 80-120 m/min, and the transparent resin coating is water-based acrylic resin emulsion or UV epoxy resin emulsion.
Compared with the traditional printing package, the micro-nano color package has the following advantages:
1. the present invention generates color through the action of nanometer level micro structure and light wave, and the traditional printing adopts color pigment in ink to express color.
2. The invention adopts the nanometer microstructure to show the color of the optical image-text, and has good simplifying effect of the working procedure. The traditional printed packaging products are produced by mutually using different printing such as offset printing, gravure printing, flexo printing, silk-screen printing and the like, and have the defects of complex process, long flow, large consumption of ink chemicals and the like.
3. The method is environment-friendly and pollution-free, a large amount of printing ink and solvent are not needed in the whole production process, the production process is environment-friendly and free of VOCs emission, and the method does not pollute the environment and does not cause health hazards to workers.
4. The product is safe, and the finally prepared packaging product does not use a large amount of printing ink and solvent, so that solvent residue is avoided, particularly harmful substances are prevented from migrating to cigarette packages, food packages and the like, and the safety performance of the product is improved.
In order to prepare the packaging product by adopting the preparation method of the green environment-friendly micro-nano structure color packaging product, the multifunctional micro-nano structure color film production equipment shown in figure 1 can be adopted. It includes unwinding device 1, draw gear 2, gravure press 3, first oven heating system 4, scraper coating unit 5, second oven heating system 6, micro-nano structure stamping device 7, cooling device 8, duplex position coiling mechanism 9, frame 10, draw gear 2 is connected on frame 10, first oven heating system 4 is connected on gravure press 3, gravure press 3 is connected on frame 10, scraper coating unit 5 is connected on frame 10, second oven heating system 6 is connected in the top of frame 10, micro-nano structure stamping device 7 is connected on frame 10, cooling device 8 is connected on frame 10, unwinding device 1 and coiling mechanism 9 can be independent with frame 10.
The specific functions are as follows:
the unwinding device is used for unwinding the plastic film;
the traction device is used for dragging the plastic film unreeled from the unreeling device to convey forwards;
the gravure printing device is used for printing pictures and texts on the plastic film;
the first oven heating system is used for drying printing ink on the plastic film after the image-text printing;
a blade coating device for coating a resin layer on the surface of the plastic film;
the second oven heating system is used for drying the resin layer of the plastic film coated with the resin layer;
the micro-nano structure imprinting device is used for imprinting the micro-nano structure pattern;
the cooling device is used for cooling the plastic film after the micro-nano structure pattern imprinting is completed;
the winding device is used for winding the plastic film;
the gap bridge guide roller is used for guiding the film to feed through the guide roller;
the gravure printing device and the micro-nano structure imprinting device sequentially or reversely print images and texts and imprint micro-nano structure patterns, so that overprinting of the printed images and texts and the micro-nano structure images and texts is realized;
the equipment still includes picture and text location registration system, picture and text location registration system includes first photoelectric sensor, second photoelectric sensor and registration treater, first photoelectric sensor sets up and is used for real-time detection printing picture and text overprinting cursor MARK error on intaglio printing device, second photoelectric sensor sets up and is used for real-time detection micro-nano structure picture and text overprinting cursor MARK error on micro-nano structure stamping device, registration treater handles the overprinting cursor MARK error signal that first photoelectric sensor and second photoelectric sensor detected to through adjustment printing version roller phase place and micro-nano structure version roller phase place, realize printing picture and text and micro-nano structure picture and text registration.
The equipment further comprises a film deviation rectifying system, wherein the film deviation rectifying system comprises a third photoelectric sensor arranged on the unwinding device, a fourth photoelectric sensor arranged on the gravure printing device and a fifth photoelectric sensor arranged on the winding device, and the edges of the film are detected through the third photoelectric sensor, the fourth photoelectric sensor and the fifth photoelectric sensor. When the film deviates, the deviation rectification swing roller is used for carrying out twisting and swinging back according to the detected error signal to realize deviation rectification.
The equipment also comprises a tension control system, wherein the tension control system comprises a tension sensor, a tension control roller and a tension servo motor, and the tension servo motor controls the tension control roller to control the tension according to data collected by the tension sensor.
Of course, the specific structure and operation principle of the film deviation rectifying system and the tension control system can refer to the prior art.
The unreeling device 1, the traction device 2, the gravure printing device 3, the first oven heating system 4, the scraper coating device 5, the second oven heating system 6, the micro-nano structure imprinting device 7, the cooling device 8 and the double-station reeling device 9 can all adopt structures in the prior art.
Preferably, the unwinding device can be a double-station unwinding device, the double-station unwinding device is provided with two material loading stations and an infrared detection device for detecting the use condition of the materials, after the materials at the first station are used, the infrared detection device sends a signal after detecting the material, and the unwinding device automatically turns over the second station to realize splicing unwinding of the materials without stopping.
Preferably, the winding device can be a double-station winding device, the double-station winding device is provided with two material loading stations and an infrared detection device for detecting the use condition of the materials, when the materials at the first station are wound to a limited size, the infrared detection device sends out a signal after detecting the materials, the winding device automatically turns over to start winding the materials at the second station, and splicing and winding of the materials without stopping are realized.
The traction device drives the driving roller to rotate by an electronic shaft motor, so that the forward conveying of the film is realized.
The gravure printing device mainly comprises a scraper, a concave printing plate and a stamping roller, and realizes the registration printing of printing pictures and texts and micro-nano structure pictures and texts. The electronic engraving intaglio and the water-based ink are adopted to print under the condition of the vehicle speed of 30-100 m/min, the color of the electronic engraving intaglio and the water-based ink can be a plurality of colors, and the electronic engraving intaglio and the water-based ink are accurately overprinted, and a protective layer is coated after printing.
The scraper coating device mainly comprises a scraper, a coating plate roller and a stamping roller, wherein an electronic engraving gravure or anilox roller and water-based ink are adopted for coating under the condition that the vehicle speed is 30-100 m/min, and a protective layer is coated after printing. Because the resin coating is arranged outside the ink layer, the printing ink can be protected and isolated, so that the ink is prevented from discoloring in a high-temperature vacuum environment close to 1200 ℃ when the vacuum aluminum plating or zinc sulfide is carried out, and the like.
The first oven heating system and the second oven heating system are mainly used for heating air through electric heating, and comprise exhaust fans and ovens, and the length of the ovens distributed in the first oven heating system of the gravure printing device is 1-2.5 meters; the length of the second oven heating system distributed on the top of the frame is 15-20 meters. Hot air drying at 80-150 deg.c.
The micro-nano structure imprinting device mainly comprises a preheating roller, an imprinting rubber roller and a printing roller, wherein a resin coating of a film is softened by the preheating roller at the temperature of 80-150 ℃ and the vehicle speed of 25-100 m/min, and a nickel printing roller of the micro-nano structure imprinting device carries out image-text imprinting.
The film cooling is to cool the front and back surfaces of the film through 2 water-cooled rollers on a cooling device at the temperature of 15-25 ℃.
The cooling device mainly comprises a water-cooling roller, and realizes film cooling.
The frame is integrated into one piece, can be for welding or bolt concatenation or both combine for install all devices.
Example one
In this embodiment, a multifunctional micro-nano structure color film production device is used as a full-automatic on-line printing-coating-molding press to perform full-automatic non-stop on-line printing, coating and holographic pattern molding, so as to manufacture a micro-nano structure color film product.
Referring to fig. 1, the work flow is as follows: the plastic film unreels from duplex position unwinding device 1, carry forward through draw gear 2, then carry out the printing ink drying through oven system 4 simultaneously through gravure printing device 3 picture and text printing, carry out the picture and text printing through a plurality of printing device in proper order, pass through scraper coating unit 5 again and carry out the coating resin layer, then get into oven system 6 and carry out the resin layer drying, carry out the micro nano-structure pattern impression and overprint with the printing picture and text through micro nano-structure impression device 7 again, carry out the film cooling through cooling device 8 again, it is the micro nano-structure color film product to carry out the rolling of not shutting down to get into double-station coiling device 9 at last.
Furthermore, after the film is rolled, the film can be protected by aluminizing or zinc sulfide plating by a vacuum coating device.
In the embodiment, the film completes multiple processes of overprinting of the printed pattern, coating of the resin layer, imprinting of the micro-nano structure image-text and overprinting of the printing in sequence at one time, so that the problem of repeated machining by other equipment at present is solved, and accurate overprinting of the micro-nano structure image-text and the printing image-text is realized; the coated resin layer is used as a carrier of the wiener structure image-text when the micro-nano structure image-text is imprinted, and the coated resin layer protects printing ink, so that the problem that the ink is discolored at high temperature in the subsequent vacuum evaporation is solved; the full-automatic coil changing production machine realizes one-step molding of a plurality of processes and full-automatic coil changing production without stopping, improves the production efficiency, reduces the production cost, reduces the energy consumption and improves the product quality.
Example two
In the embodiment, the multifunctional micro-nano structure color film production equipment is used as a full-automatic line-connecting mould pressing-printing-coating machine to carry out full-automatic line-connecting holographic pattern mould pressing, printing and coating without stopping, so as to manufacture a micro-nano structure color film product.
Referring to fig. 1, the work flow is as follows: the method comprises the steps of unreeling a film coated with resin paint from a double-station unreeling device 1, entering a micro-nano structure impressing device 7 through a gap guide roller on a rack 10 to impress color patterns of the micro-nano structure, then entering a traction device 2 through the gap guide roller on the rack 10 to convey forwards, then carrying out image-text printing through an intaglio printing device 3 and overprinting with the color patterns of the micro-nano structure, meanwhile drying printing ink through an oven system 4, carrying out image-text printing overprinting through a plurality of printing devices in sequence, protecting the printing ink through a coating protective layer coated by a scraper coating device 5, then entering the oven system 6 to dry the protective layer, cooling the film through a cooling device 8, and finally entering a double-station reeling device 9 to roll the film into a micro-nano structure color film product.
In the embodiment, the film coated with the resin coating is adopted to sequentially finish multiple processes of micro-nano structure image-text imprinting, printing pattern overprinting and coating a protective layer at one time, so that the problem of repeated machining by other equipment at present is solved, and the precise overprinting of the micro-nano structure image-text and the printing image-text is realized; the coated protective layer protects the printing ink, and solves the problem that the ink is discolored at high temperature in the subsequent vacuum evaporation; the full-automatic coil changing production machine realizes one-step molding of a plurality of processes and full-automatic coil changing production without stopping, improves the production efficiency, reduces the production cost, reduces the energy consumption and improves the product quality.
EXAMPLE III
In the embodiment, the multifunctional micro-nano structure color film production equipment is used as a full-automatic coating machine to carry out full-automatic coating without stopping, and various coating film products are manufactured.
Referring to fig. 1, the work flow is as follows: the plastic film is unreeled from the double-station unreeling device 1, is conveyed forwards through the traction device 2, then enters the scraper coating device 5 for coating through a gap guide roller on the rack 10, then enters the oven system 6 for drying the coating layer, then passes through the cooling device 8 for cooling the film, and finally enters the double-station reeling device 9 for reeling the film without stopping to obtain a finished coating film.
In the embodiment, a new different feeding mode is adopted to realize film coating, and the film coating machine can be used as a coating machine, so that the application of equipment is improved, and the application of film coating products is expanded.
Example four
In the embodiment, the multifunctional micro-nano structure color film production equipment is used as a full-automatic gravure press to perform full-automatic non-stop gravure printing to manufacture a printed film product.
Referring to fig. 1, the work flow is as follows: the plastic film is unreeled from the double-station unreeling device 1, conveyed forwards through the traction device 2, printed and printed by the gravure printing device 3 and the oven system 4, sequentially printed by the plurality of printing devices, enters the cooling device 8 through the gap bridge guide roller on the frame 10 for film cooling, and finally enters the double-station reeling device 9 for rolling the film without stopping to form a printed finished product.
In the embodiment, a new different material feeding mode is adopted to realize the film printing function, and the invention can be used as a printer to carry out conventional printing, thereby improving the application of equipment and expanding the application of film printing products.
EXAMPLE five
In this embodiment, a multifunctional micro-nano structure color film production device is used as a full-automatic molding press, and a film coated with a resin coating is used for performing a full-automatic non-stop holographic pattern molding function to manufacture a holographic film product.
Referring to fig. 1, the work flow is as follows: the method comprises the steps of unreeling a plastic film coated with resin paint from a double-station unreeling device 1, entering a micro-nano structure impressing device 7 through a gap guide roller on a rack 10 to impress micro-nano structure patterns, cooling the film through a cooling device 8, and finally entering a double-station reeling device 9 to be reeled into a holographic film finished product without stopping.
In the embodiment, the pre-coated film is adopted to realize the holographic pattern imprinting function according to new different feeding modes, and the invention can be used as a conventional holographic molding press to carry out holographic imprinting, improve the use of equipment and expand the application of holographic film products.
EXAMPLE six
In this embodiment, a multifunctional micro-nano structure color film production device is used as a full-automatic on-line coating-molding press to perform full-automatic non-stop on-line coating and holographic pattern molding, so as to manufacture a holographic film product.
Referring to fig. 1, the work flow is as follows: the plastic film is unreeled from the double-station unreeling device 1, conveyed forwards through the traction device 2, enters the scraper coating device 5 through a gap guide roller on the rack 10 to be coated, enters the oven system 6 to be dried, enters the micro-nano structure imprinting device 7 to be imprinted with micro-nano structure patterns, is cooled through the cooling device 8, and finally enters the double-station reeling device 9 to be coated with the film without shutdown and to be rolled with die pressing holographic patterns to be holographic film finished products.
In the embodiment, the novel different material feeding modes are adopted to realize the dual functions of film coating and holographic pattern imprinting, the invention can be used for connection coating and connection holographic imprinting production, innovatively solves the problem that the prior two processes of coating and die pressing are independently finished, and is beneficial to improving the product quality, improving the application of equipment, reducing the production cost and expanding the application of holographic film products.
It will be appreciated by those skilled in the art that the number of gravure printing devices and corresponding first oven heating systems in the above embodiments may be varied, for example by adding printing devices and first oven heating systems to 8 or even 10.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in other forms without departing from the spirit or essential characteristics thereof. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (10)
1. A preparation method of a green environment-friendly micro-nano structure color packaging product is characterized by comprising the following steps:
step S1, preparing a plastic film and base paper;
s2, designing a micro-nano structure color image and text and preparing a printing plate, after designing the needed micro-nano structure color image and text, adopting a multi-wavelength laser to perform laser direct writing exposure on a photosensitive glass plate in different wavelengths and light wave cycle frequency ranges, recording images and texts with different depth shapes, and copying a metalized printing plate;
step S3, adopting water-based ink to print and dry local images and texts on the film, or skipping step S3;
s4, full-page coating and drying are carried out by adopting water-based resin paint, and the pictures and texts printed in the S3 are protected;
step S5, carrying out image-text imprinting by adopting a micro-nano structure color printing plate;
step S6, evaporating the film with the copied pictures and texts by aluminum or zinc sulfide through vacuum medium plating equipment;
step S7, compounding the evaporated film with base paper through aqueous resin emulsion, drying and stripping to transfer the pictures and texts on the film to the base paper;
step S8, coating a layer of transparent resin coating layer on the surface of the paper carrying the pictures and texts for friction-resistant protection;
and S9, performing subsequent processing on the paper product obtained in the step S8 to prepare a micro-nano structure color packaging product.
2. The preparation method of the green environment-friendly micro-nano structure color packaging product according to claim 1, characterized by comprising the following steps: the plastic film is a BOPP or PET film, and the base paper is coated paper or white cardboard.
3. The preparation method of the green environment-friendly micro-nano structure color packaging product according to claim 1, characterized by comprising the following steps: in step S2, the light wave period frequency of the multi-wavelength laser is in the range of 300-15000 nm, the wavelength is in the range of 390-760nm, and the engraving depth on the photosensitive glass plate is 100-1000 nm.
4. The preparation method of the green environment-friendly micro-nano structure color packaging product according to claim 1, characterized by comprising the following steps: in the step S3, the water-based ink local graphic printing adopts an electronic engraving intaglio and is printed under the condition of the vehicle speed of 30-100 m/min.
5. The preparation method of the green environment-friendly micro-nano structure color packaging product according to claim 1, characterized by comprising the following steps: in the step S4, an electronic engraving intaglio or an anilox roller is adopted to coat the water-based resin coating under the condition that the vehicle speed is 30-100 m/min, and the water-based resin coating is water-based polyurethane resin emulsion or UV epoxy resin coating.
6. The preparation method of the green environment-friendly micro-nano structure color packaging product according to claim 1, characterized by comprising the following steps: in the step S5, the coating prepared in the step S4 is softened at the temperature of 100-.
7. The preparation method of the green environment-friendly micro-nano structure color packaging product according to claim 1, characterized by comprising the following steps: in step S6, the vacuum reaches 2.0 x 10-2And (3) performing aluminum or zinc sulfide evaporation under the conditions that the refrigeration capacity reaches-120 ℃, wherein the thickness of a coating is 35-45 nm.
8. The preparation method of the green environment-friendly micro-nano structure color packaging product according to claim 1, characterized by comprising the following steps: in the step S7, the base paper and the film are compounded and peeled at the temperature of 80-120 ℃ and the vehicle speed of 80-120 m/min, and the water-based resin emulsion is water-based acrylic emulsion or water-based polyurethane emulsion.
9. The preparation method of the green environment-friendly micro-nano structure color packaging product according to claim 1, characterized by comprising the following steps: in the step S8, a transparent resin coating layer is coated at the temperature of 80-120 ℃ and the vehicle speed of 80-120 m/min, and the transparent resin coating is water-based acrylic resin emulsion or UV epoxy resin emulsion.
10. A green's micro-nano structure look packing article which characterized in that: the green environment-friendly micro-nano structure color packaging product is prepared by the method for preparing the green environment-friendly micro-nano structure color packaging product according to any one of claims 1 to 9.
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Application publication date: 20191220 |