CN112626924B - Cat eye positioning holographic paper and preparation method and application thereof - Google Patents
Cat eye positioning holographic paper and preparation method and application thereof Download PDFInfo
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- CN112626924B CN112626924B CN202011462441.5A CN202011462441A CN112626924B CN 112626924 B CN112626924 B CN 112626924B CN 202011462441 A CN202011462441 A CN 202011462441A CN 112626924 B CN112626924 B CN 112626924B
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
- D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
- D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/02—Metal coatings
- D21H19/08—Metal coatings applied as vapour, e.g. in vacuum
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/66—Coatings characterised by a special visual effect, e.g. patterned, textured
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
- D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Holo Graphy (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides cat eye positioning holographic paper and a preparation method and application thereof. The preparation method comprises the following steps: (1) Coating a coating on one surface of the paper, performing laser mould pressing and curing to obtain a coating layer; (2) Coating a film on one surface of the coating layer obtained in the step (1), which is far away from the paper, so as to obtain a reflecting layer; (3) Coating a water-based coating on one surface, far away from the coating layer, of the reflection layer obtained in the step (2), and drying to obtain the cat eye positioning holographic paper; the curing method in the step (1) is electron beam radiation curing. According to the invention, the production process of directly coating the coating on one surface of the paper to perform laser mould pressing and curing is adopted, so that the production process is simplified, the production cost is reduced, a polyester material is not required to be used as a base material in the process of preparing the cat-eye holographic positioning paper, the cat-eye holographic positioning paper is environment-friendly, and the prepared cat-eye holographic positioning paper is accurate in positioning due to the good tensile deformation resistance of the paper.
Description
Technical Field
The invention belongs to the technical field of printing and packaging, and particularly relates to cat eye positioning holographic paper and a preparation method and application thereof.
Background
With the improvement of living standard and the improvement of science and technology, people have higher and higher requirements on the appearance of products. In recent years, laser cat-eye films are favored by more and more suppliers of printing substrates, label manufacturers and end consumers as a brand-new laser holographic anti-counterfeiting film. The difference between the laser cat-eye film and the common laser film is that the information layer thickness of the laser cat-eye film is 3-10 mu m, and the information layer thickness of the common laser film is less than 2 mu m, so the anti-counterfeiting effect of the laser cat-eye film is better than that of the common laser film. At present, the cat eye positioning holographic paper prepared by compounding the laser cat eye film and the paperboard has the characteristics of platinum luster, high anti-counterfeiting performance, 3D embossing effect and the like, is popular with mass stamp enterprises, and is widely applied to the packaging of various high-grade commodities, such as cigarettes, wine, food, cosmetics, medicines, electronic products, gifts and the like.
CN105586807A discloses a cat eye and relief laser holographic transfer paperboard and a preparation method thereof. The cat eye and embossed laser holographic transfer paperboard comprises paper, a glue layer, a UV coating layer, a cat eye and an embossed laser pattern layer which are sequentially stacked. The preparation method of the cat eye and embossment laser holographic transfer paperboard comprises the following steps: coating a layer of glue on the paper and then curing to form a glue layer; coating a layer of UV coating on the glue layer to form a UV coating layer; covering the cat eye and the embossed laser film on the UV coating layer, and laminating to obtain a composite film layer; and after the composite film layer is cured, transferring cat eyes and embossed laser patterns on the cat eye and embossed laser film to the UV coating layer, peeling off the cat eye and embossed laser film to obtain the cat eye and embossed laser holographic transfer paperboard, wherein the base material of the cat eye and embossed laser film is selected from PET, BOPP or PVC. According to the technical scheme, in the process of preparing the cat eye and embossment laser holographic transfer paperboard, when the cat eye and embossment laser film are compounded with paper, the cat eye and embossment laser film are influenced by the unreeling tension, so that the positioning size deviation of the cat eye is large, the preparation process is complex, and the cost is high.
CN109440534A discloses a transfer platinum cat eye positioning paper and a preparation process thereof. The preparation process comprises the following steps: (1) UV coating and die pressing process: coating UV gloss oil on the PET pretreatment film, and preparing a mother film through mould pressing and UV curing; (2) aluminum plating step: plating the UV coating surface of the mother film on an aluminum plating machine to prepare a transferred platinum cat-eye aluminizer; and (3) gum application and slitting: coating a water-based back adhesive on the coated aluminum surface, drying and slitting to obtain a finished film; (4) a composite step: coating transfer glue on the aluminum surface of the finished film on a compounding machine, compounding the aluminum surface with base paper, and drying; (5) wire stripping and top coating: stripping the connecting line, coating water varnish on the connecting line, drying to obtain transfer platinum positioning paper, and rolling the stripped film; (6) Cross-cutting step: the paper is transversely cut on a high-precision positioning transverse cutting machine, and the cut paper is tracked through an electric eye. Among this technical scheme, need use PET as the mother's membrane of substrate preparation, additionally increased manufacturing cost, and at the composite process of finished product membrane and base stock, because the finished product membrane can receive not equidirectional drawing, consequently the great problem of cat eye location size deviation can appear.
CN110816098A discloses a technical tipping paper for positioning printing cat eye. The process for positioning and printing the cat eye comprises the following steps: printing a laser coating on a PET film material to prepare concentric circular grains; compounding the PET film material treated in the previous step with tipping base paper to prepare PET laser cat eye special edition transfer tipping base paper; manufacturing a positioning tracking cursor block in a non-image-text area of transfer tipping base paper of a PET laser cat eye special plate; overprinting by using ink according to a positioning and tracking cursor block on the PET laser cat eye special plate transfer tipping base paper; gold stamping is carried out on the surface of the PET laser cat eye special plate transfer tipping base paper by using gold stamping equipment; and (4) slitting the PET laser cat eye special version transfer tipping base paper to obtain a finished product. According to the technical scheme, when the treated PET film material is compounded with the tipping base paper, the tension and the gluing amount are strictly controlled so as to reduce the deformation amount of the base paper, and the process steps are complicated and the conditions are severe.
Therefore, in the prior art, a process method of compounding the cat eye positioning film and the paperboard is usually adopted when preparing the cat eye positioning holographic paper, but the process method is complicated in steps, the cat eye positioning film is influenced by unwinding tension, and the cat eye positioning film can be stretched in different directions when being compounded with the paperboard, so that the problem of large deviation of the cat eye positioning size occurs, and meanwhile, a polyester film is required to be used as a base material in the preparation process of the cat eye positioning film, so that the process is not environment-friendly. Therefore, how to provide a cat eye positioning holographic paper which has simple production process, accurate cat eye positioning size and is environment-friendly becomes a problem to be solved urgently.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide cat eye positioning holographic paper and a preparation method and application thereof. According to the invention, the production process of directly coating the coating on one surface of the paper for laser mould pressing and performing electron beam radiation curing is adopted, so that the production process is simplified, the production cost is reduced, the environment is protected, and the positioning size deviation of the prepared cat eye positioning holographic paper is small.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a preparation method of cat eye positioning holographic paper, which comprises the following steps:
(1) Coating a coating on one surface of the paper, performing laser mould pressing and curing to obtain a coating layer;
(2) Coating a film on one surface of the coating layer obtained in the step (1), which is far away from the paper, so as to obtain a reflecting layer;
(3) Coating a water-based coating on one surface, far away from the coating layer, of the reflection layer obtained in the step (2), and drying to obtain the cat eye positioning holographic paper;
the curing method in the step (1) is electron beam radiation curing.
According to the invention, the cat eye holographic positioning paper is prepared by a process method of directly coating a coating on one surface of paper for laser mould pressing, obtaining a coating layer after electron beam radiation curing, and coating a film on one surface of the coating layer far away from the paper and coating a water-based coating. The preparation method provided by the invention not only simplifies the production process and reduces the production cost, but also does not need to use a polyester material as a base material in the process of preparing the cat eye holographic positioning paper, is environment-friendly, and has better stretch-resistant deformation capability, so that the prepared cat eye holographic positioning paper has smaller positioning size deviation and is more accurate.
The following is a preferred technical solution of the present invention, but not a limitation to the technical solution provided by the present invention, and the object and advantageous effects of the present invention can be better achieved and achieved by the following preferred technical solution.
In a preferred embodiment of the present invention, the paper is selected from any one of white cardboard, grey cardboard, black cardboard, coated paper and glass cardboard.
As a preferable embodiment of the present invention, the coating amount in the step (1) is 3 to 15g/m 2 It may be, for example, 3g/m 2 、4g/m 2 、5g/m 2 、6g/m 2 、7g/m 2 、8g/m 2 、9g/m 2 、10g/m 2 、11g/m 2 、12g/m 2 、13g/m 2 、14g/m 2 Or 15g/m 2 And so on.
Preferably, the coating of step (1) is selected from a UV-curable coating and/or an electron beam-curable coating.
As a preferable technical scheme of the invention, the molding speed of the laser molding in the step (1) is 15-60 m/min, for example, 15m/min, 18m/min, 21m/min, 25m/min, 27m/min, 30m/min, 33m/min, 36m/min, 40m/min, 43m/min, 46m/min, 50m/min, 52m/min, 55m/min, 58m/min or 60 m/min.
Preferably, the molding pressure of the laser molding is 0.05 to 3MPa, and may be, for example, 0.05MPa, 0.1MPa, 0.2MPa, 0.5MPa, 0.8MPa, 1MPa, 1.3MPa, 1.5MPa, 1.8MPa, 2MPa, 2.2MPa, 2.5MPa, 2.7MPa or 3 MPa.
Preferably, the energy of the electron beam in the electron beam radiation curing is 200-700 keV, and may be, for example, 200keV, 220keV, 250keV, 280keV, 300keV, 350keV, 380keV, 400keV, 430keV, 460keV, 500keV, 540keV, 580keV, 620keV, 660keV, 700keV, or the like.
In the present invention, the energy of the electron beam in the electron beam radiation curing is controlled in the range of 200 to 700keV, so that the coating material in the step (1) can be cured effectively without damaging the paper. If the energy of the electron beam in the electron beam radiation curing is smaller, the coating coated on one surface of the paper cannot be completely cured, and the next coating cannot be carried out to prepare a reflecting layer; if the energy of the electron beam is larger in the electron beam radiation curing, the electron beam can penetrate through the coating layer to burn the paper.
As a preferable technical scheme of the invention, the method for coating the film in the step (2) is vacuum evaporation.
Preferably, the material of the coating film is selected from any one or a combination of at least two of aluminum, copper, zinc sulfide, silicon dioxide or titanium dioxide, and further preferably is aluminum.
Preferably, the coating speed is 200-600 m/min, such as 200m/min, 230m/min, 250m/min, 300m/min, 320m/min, 360m/min, 400m/min, 420m/min, 460m/min, 500m/min, 520m/min, 550m/min, 580m/min or 600 m/min.
Preferably, the thickness of the reflective layer is
For example, can be
Or
And so on.
As a preferable embodiment of the present invention, the coating speed in the step (3) is 5 to 150m/min, and may be, for example, 5m/min, 10m/min, 20m/min, 30m/min, 40m/min, 50m/min, 60m/min, 70m/min, 80m/min, 90m/min, 100m/min, 110m/min, 120m/min, 130m/min, 140m/min, 150m/min, or the like.
Preferably, the coating weight of the step (3) is 2-6 g/m 2 It may be, for example, 2g/m 2 、2.2g/m 2 、2.5g/m 2 、2.7g/m 2 、3g/m 2 、3.3g/m 2 、3.6g/m 2 、4g/m 2 、4.2g/m 2 、4.6g/m 2 、5g/m 2 、5.2g/m 2 、5.5g/m 2 、5.8g/m 2 Or 6g/m 2 And so on.
Preferably, the aqueous coating in step (3) is selected from any one of or a combination of at least two of an aqueous acrylic resin coating, an aqueous polyurethane resin coating or an aqueous polyester resin coating.
Preferably, the drying temperature is 50-120 ℃, for example, can be 50 ℃, 55 ℃, 60 ℃, 65 ℃, 70 ℃, 75 ℃, 80 ℃,85 ℃, 90 ℃, 95 ℃, 100 ℃, 105 ℃, 110 ℃, 115 ℃ or 120 ℃.
Preferably, the drying time is 5 to 15s, for example, 5s, 6s, 7s, 8s, 9s, 10s, 11s, 12s, 13s, 14s, 15s, or the like.
As a preferable technical scheme of the invention, after the drying in the step (3) is finished, a protective layer is obtained on one surface of the reflecting layer, which is far away from the coating layer.
Preferably, the drying in step (3) is completed and a post-treatment step is also included.
Preferably, the post-processing method is to perform cross-cutting by a high-precision positioning cross-cutting machine and adopting electro-eye tracking.
As a preferred technical scheme of the invention, the preparation method specifically comprises the following steps:
(1) Coating a coating on one surface of the paper, performing laser mould pressing, and performing electron beam radiation curing to obtain a coating layer; the coating weight of the coating is 3 to 15g/m 2 The mould pressing speed of the laser mould pressing is 15-60 m/min, the mould pressing pressure is 0.05-3 MPa, and the energy of an electron beam in the radiation curing of the electron beam is 200-700 keV;
(2) Coating a film on one surface of the coating layer obtained in the step (1) far away from the paper by vacuum evaporation to obtain a film with the thickness of
The reflective layer of (1); the coating speed is 200-600 m/min;
(3) Coating water varnish on one surface of the reflecting layer obtained in the step (2) far away from the coating layer, drying for 5-15 s at 50-120 ℃ to obtain a protective layer, and performing cross cutting and sheet cutting by using an electric eye tracking through a high-precision positioning cross cutting machine to obtain the cat eye positioning holographic paper; the coating speed is 5-150 m/min, and the coating weight is 2-6 g/m 2 。
In a second aspect, the invention provides a cat eye positioning holographic paper, which is prepared by the preparation method of the first aspect.
In a third aspect, the invention provides a use of the cat's eye positioning holographic paper as described in the second aspect, wherein the cat's eye positioning holographic paper is used as a cigarette and wine packaging material or a daily chemical product packaging material.
Compared with the prior art, the invention at least has the following beneficial effects:
the cat eye holographic positioning paper is prepared by the process method that coating is directly coated on one surface of paper, laser mould pressing is carried out, electron beam radiation curing is carried out, a coating layer is obtained, and coating water-based coating are carried out on one surface of the coating layer far away from the paper. The preparation method provided by the invention not only simplifies the production process and reduces the production cost, but also does not need to use a polyester material as a base material in the process of preparing the cat-eye holographic positioning paper, is environment-friendly, and has better stretch-resistant deformation resistance, so that the prepared cat-eye holographic positioning paper is more accurate in positioning, and the deviation of the positioning size is less than 0.15mm.
Drawings
FIG. 1 is a schematic structural diagram of cat eye holographic positioning paper prepared according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of measuring deviation size of cat eye positioning holographic paper by adopting film nesting;
wherein, the coating comprises 1-paper, 2-coating layer, 3-reflecting layer and 4-protective layer.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
The sources of some of the components in the examples and comparative examples are as follows:
UV curing coating: MYs-08, china gaozheng environmental protection science and technology ltd;
curing the coating by electron beams: hangzhou ink GmbH, EB cured coatings;
water-based acrylic resin paint: shanghai Bian-Wei chemical technology, inc., PA-622;
aqueous polyurethane resin coating: 6755 from Oudemet Polymer materials, shandong;
water polyester resin paint: shanghai Bian-Wei chemical technology, inc., 8530;
example 1
The embodiment provides cat eye positioning holographic paper and a preparation method thereof, and a structural schematic diagram of the cat eye positioning holographic paper is shown in fig. 1 and comprises paper 1, a coating layer 2, a reflecting layer 3 and a protective layer 4. The preparation method comprises the following steps:
(1) Coating a UV curing coating on one surface of the coated paper in a reticulate pattern roller coating mode, then pressing the coated paper with a printing roller pasted with a cat eye positioning holographic effect nickel plate for laser mould pressing, and performing radiation curing by an electron beam with the energy of 300keV to obtain a coating layer 2; the coating weight of the coating is 5g/m 2 The mould pressing speed of the laser mould pressing is 30m/min, and the mould pressing pressure is 0.2MPa;
(2) Evaporating an aluminum layer on one surface of the coating layer obtained in the step (1) far away from the coated paper in vacuum to obtain the coated paper with the thickness of
The reflective layer 3; the speed of the vacuum evaporation aluminum layer is 300m/min;
(3) Coating a water-based acrylic resin coating on one surface of the reflecting layer 3 obtained in the step (2) far away from the coating layer 2, and drying at 90 ℃ for 12s to obtain a protective layer 4; performing cross cutting and sheet cutting by using an electric eye tracking through a high-precision cross cutting machine to obtain the cat eye positioning holographic paper; the coating speed is 120m/min, and the coating weight is 3g/m 2 。
Example 2
The embodiment provides a cat eye positioning holographic paper and a preparation method thereof, the structure of the cat eye positioning holographic paper is the same as that of the embodiment 1, and the preparation method specifically comprises the following steps:
(1) Coating UV curing coating on one side of the white cardboard by a reticulate pattern roller, pressing with a plate roller stuck with a cat eye positioning holographic effect nickel plate for laser mould pressing, and performing laser mould pressing by energy ofCuring by electron beam radiation of 450keV to obtain a coating layer 2; the coating weight of the coating is 8g/m 2 The mould pressing speed of the laser mould pressing is 50m/min, and the mould pressing pressure is 0.15MPa;
(2) Vacuum evaporating and plating an aluminum layer on one surface of the coating layer obtained in the step (1) far away from the white cardboard to obtain the aluminum layer with the thickness of
The reflective layer 3 of (a); the speed of the vacuum evaporation aluminum layer is 400m/min;
(3) Coating a water-based acrylic resin coating on one surface of the reflecting layer 3 obtained in the step (2) far away from the coating layer 2, and drying for 10s at the temperature of 100 ℃ to obtain a protective layer 4; performing cross cutting and sheet cutting by using an electric eye tracking through a high-precision cross cutting machine to obtain the cat eye positioning holographic paper; the coating speed is 100m/min, and the coating weight is 4g/m 2 。
Example 3
The embodiment provides a cat eye positioning holographic paper and a preparation method thereof, the structure of the cat eye positioning holographic paper is the same as that in embodiment 1, and the specific preparation method is as follows:
(1) Coating a UV curing coating on one surface of gray card paper in a reticulate pattern roller coating mode, then pressing the gray card paper with a plate roller pasted with a cat eye positioning holographic effect nickel plate for laser mould pressing, and performing radiation curing on an electron beam with the energy of 600keV to obtain a coating layer 2; the coating weight of the coating is 12g/m 2 The mould pressing speed of the laser mould pressing is 60m/min, and the mould pressing pressure is 1MPa;
(2) Vacuum evaporating and plating an aluminum layer on one surface of the coating layer obtained in the step (1), which is far away from the grey paperboard, to obtain the aluminum layer with the thickness of
The reflective layer 3; the speed of the vacuum evaporation aluminum layer is 300m/min;
(3) Coating a water-based acrylic resin coating on one surface of the reflecting layer 3 obtained in the step (2) far away from the coating layer 2, and drying for 8s at the temperature of 110 ℃ to obtain a protective layer 4; performing cross cutting and sheet cutting by using an electric eye tracking through a high-precision cross cutting machine to obtain the cat eye positioning holographic paper;the coating speed is 80m/min, and the coating weight is 5g/m 2 。
Example 4
The embodiment provides a cat eye positioning holographic paper and a preparation method thereof, the structure of the cat eye positioning holographic paper is the same as that of the embodiment 1, and the preparation method specifically comprises the following steps:
(1) Coating an electron beam curing coating on one surface of the black card paper by a scraper, then pressing the black card paper with a plate roller stuck with a cat eye positioning holographic effect nickel plate for laser mould pressing, and performing electron beam radiation curing with the energy of 200keV to obtain a coating layer 2; the coating weight of the coating is 15g/m 2 The mould pressing speed of the laser mould pressing is 15m/min, and the mould pressing pressure is 0.05MPa;
(2) Vacuum evaporating a copper layer on one surface of the coating layer obtained in the step (1) far away from the black paperboard to obtain a coating layer with the thickness of
The reflective layer 3 of (a); the speed of the vacuum evaporation copper layer is 200m/min;
(3) Coating a water-based polyurethane resin coating on one surface of the reflecting layer 3 obtained in the step (2) far away from the coating layer 2, and drying for 15s at 50 ℃ to obtain a protective layer 4; performing cross cutting and sheet cutting by a high-precision cross cutting machine by using electric eye tracking to obtain the cat eye positioning holographic paper; the coating speed is 5m/min, and the coating weight is 6g/m 2 。
Example 5
The embodiment provides a cat eye positioning holographic paper and a preparation method thereof, the structure of the cat eye positioning holographic paper is the same as that of the embodiment 1, and the preparation method specifically comprises the following steps:
(1) Coating an electron beam curing coating on one surface of the glass paperboard in a reverse roller coating mode, then pressing the glass paperboard with a plate roller stuck with a cat eye positioning holographic effect nickel plate for laser mould pressing, and performing radiation curing on an electron beam with the energy of 700keV to obtain a coating layer 2; the coating weight of the coating is 3g/m 2 The mould pressing speed of the laser mould pressing is 40m/min, and the mould pressing pressure is 3MPa;
(2) Vacuum coating the surface of the coating layer obtained in the step (1) far away from the glass paperboardEvaporating a zinc sulfide layer to obtain a thickness of
The reflective layer 3; the speed of vacuum evaporation plating of the zinc sulfide layer is 600m/min;
(3) Coating a water-based polyester resin coating on one surface, far away from the coating layer 2, of the reflecting layer 3 obtained in the step (2), and drying for 5s at the temperature of 120 ℃ to obtain the cat eye positioning holographic paper; the coating speed is 150m/min, and the coating weight is 2g/m 2 。
The performance of the cat eye positioning holographic paper provided by the embodiment is tested, and the test standards are as follows:
deviation size: as shown in fig. 2, under the conditions of a temperature of 20 ℃ and a humidity of 60%, two cross lines below the film and two cross lines below the cat eye positioning holographic paper are aligned, and a magnifying glass with a ruler is used to measure the deviation of the relative positions of the two cross lines above the film and the two cross lines above the cat eye positioning holographic paper, and the obtained numerical value is the deviation size.
The deviation sizes of the film nesting-measuring cat eye positioning holographic paper for the cat eye positioning holographic paper provided by the embodiments 1 to 5 are all less than 0.15mm. Therefore, the cat eye holographic positioning paper is prepared by adopting the process method of directly coating the coating on one surface of the paper, performing laser die pressing and curing by electron beam radiation to obtain the coating, coating the coating on one surface of the coating away from the paper and coating the water-based coating, so that the production process is simplified, the production cost is reduced, a polyester material is not required to be used as a base material in the process of preparing the cat eye holographic positioning paper, the cat eye holographic positioning paper is environment-friendly, and the prepared cat eye holographic positioning paper has accurate positioning and the deviation of the positioning size is less than 0.15mm because the paper has better anti-stretching deformation capability.
The applicant states that the present invention is illustrated by the above examples to show the detailed process flow of the present invention, but the present invention is not limited to the above detailed process flow, which means that the present invention does not depend on the above detailed process flow to be implemented. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (21)
1. The preparation method of the cat eye positioning holographic paper is characterized by comprising the following steps:
(1) Coating a coating on one surface of the paper, performing laser mould pressing and curing to obtain a coating layer;
(2) Coating a film on one surface of the coating layer obtained in the step (1), which is far away from the paper, so as to obtain a reflecting layer;
(3) Coating water-based paint on one surface of the reflection layer obtained in the step (2) away from the paint layer, and drying to obtain the cat eye positioning holographic paper;
the curing method in the step (1) is electron beam radiation curing;
the energy of the electron beam in the electron beam radiation curing is 200 to 700keV;
the coating in the step (1) is selected from a UV curing coating and/or an electron beam curing coating.
2. The method according to claim 1, wherein the paper is selected from any one of white cardboard, grey cardboard, black cardboard, coated paper and glass cardboard.
3. The method according to claim 1, wherein the coating weight of the coating in step (1) is 3 to 15g/m 2 。
4. The preparation method of claim 1, wherein the molding speed of the laser molding in the step (1) is 15 to 60 m/min.
5. The preparation method of claim 1, wherein the molding pressure of the laser molding is 0.05 to 3 MPa.
6. The method according to claim 1, wherein the coating in step (2) is performed by vacuum evaporation.
7. The method according to claim 1, wherein the material of the plating film is selected from any one of aluminum, copper, zinc sulfide, silicon dioxide, and titanium dioxide, or a combination of at least two of them.
8. The method according to claim 7, wherein the material of the plating film is aluminum.
9. The method according to claim 1, wherein the coating speed is 200 to 600 m/min.
10. The method of claim 1, wherein the reflective layer has a thickness of 250 to 600A.
11. The method according to claim 1, wherein the coating speed in step (3) is 5 to 150 m/min.
12. The method according to claim 1, wherein the coating weight of the coating in step (3) is 2 to 6g/m 2 。
13. The preparation method according to claim 1, wherein the aqueous coating material in step (3) is selected from any one of or a combination of at least two of an aqueous acrylic resin coating material, an aqueous polyurethane resin coating material or an aqueous polyester resin coating material.
14. The method according to claim 1, wherein the drying temperature is 50 to 120 ℃.
15. The method according to claim 1, wherein the drying time is 5 to 15 seconds.
16. The preparation method according to claim 1, wherein after the drying in step (3), a protective layer is obtained on the side of the reflective layer away from the coating layer.
17. The method according to claim 1, wherein the drying in step (3) is completed and a post-treatment step is further included.
18. The method of claim 17, wherein the post-processing is performed by cross-cutting the sheet with a high precision positioning cross-cutter using electro-eye tracking.
19. The preparation method according to claim 1, characterized in that the preparation method comprises the following steps:
(1) Coating a coating on one surface of the paper, performing laser mould pressing, and performing electron beam radiation curing to obtain a coating layer; the coating weight of the coating is 3 to 15g/m 2 The molding speed of laser molding is 15 to 60m/min, the molding pressure is 0.05 to 3MPa, and the energy of an electron beam in electron beam radiation curing is 200 to 700keV;
(2) Performing vacuum evaporation coating on one surface of the coating layer obtained in the step (1), which is far away from paper, to obtain a reflecting layer with the thickness of 250 to 600A; the coating speed is 200 to 600m/min;
(3) Coating water-based varnish on the surface, away from the coating layer, of the reflecting layer obtained in the step (2), drying for 5-15 s at the temperature of 50-120 ℃ to obtain a protective layer, and performing cross cutting and sheet cutting by using an electric eye tracking through a high-precision positioning cross cutting machine to obtain the cat eye positioning holographic paper; the coating speed is 5 to 150m/min, and the coating weight is 2 to 6g/m 2 。
20. A cat eye positioning holographic paper, which is prepared by the preparation method according to any one of claims 1 to 19.
21. Use of the cat eye positioning holographic paper according to claim 20 as cigarette and wine packaging material or daily chemical packaging material.
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