CN112877002B - Holographic positioning film production process for local aluminum washing - Google Patents
Holographic positioning film production process for local aluminum washing Download PDFInfo
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- CN112877002B CN112877002B CN202110217453.XA CN202110217453A CN112877002B CN 112877002 B CN112877002 B CN 112877002B CN 202110217453 A CN202110217453 A CN 202110217453A CN 112877002 B CN112877002 B CN 112877002B
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/255—Polyesters
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Holo Graphy (AREA)
Abstract
A production process of a holographic positioning film for local aluminum washing comprises the following steps: (1) coating a release layer and an information layer on a base film in sequence; (2) embossing a holographic pattern layer directly onto the information layer; (3) Coating a first protective layer on the information layer to fully cover the information layer; (4) Plating an aluminum plating layer on the first protective layer to fully cover the first protective layer; (5) Coating a second protective layer on the aluminized layer outside the area where the holographic pattern layer is positioned; (6) Performing alkali washing on the aluminized layer in the area which is not covered by the second protective layer to form an aluminized area; (7) Plating a zinc sulfide dielectric layer on the upper surface of the first protective layer and the upper surface of the second protective layer in the aluminum removing area; and (8) coating a back adhesive layer on the upper surface of the zinc sulfide dielectric layer. The invention can realize local aluminum washing, not only can make the prepared holographic positioning film pattern exquisite and have a very strong transparent effect, but also can completely reserve the positioning cursor for gold stamping, and is beneficial to improving the gold stamping positioning precision.
Description
Technical Field
The invention relates to the technical field of anti-counterfeiting, in particular to a production process of a holographic positioning film for local aluminum washing.
Background
The laser holographic anti-fake pattern technology has high technological content and complicated preparation process, and has the technological process of making plate with laser holographic technology mature, so that the special holographic anti-fake pattern is applied in outer cigarette case package to increase the anti-fake function of cigarette.
The anti-counterfeiting paper for the cigarette case mainly comprises holographic anti-counterfeiting paper, holographic special anti-counterfeiting paper, special positioning gold stamping anti-counterfeiting paper and the like, the holographic special anti-counterfeiting paper and special positioning gold stamping technology are used for some high-grade cigarette case outer boxes, and the special positioning gold stamping is realized by the fact that gold stamping positioning cursors are needed for carrying out gold stamping tracking, and only a reflecting material aluminum layer with strong electroeye recognition capability can be used, so that the material reflecting layer of the holographic positioning gold stamping film on the market is basically an aluminum layer at present, and in order to further reflect the unique visual effect of a cigarette case product, the light reflecting layer of the holographic positioning gold stamping film is changed into one of the feasible schemes, namely the reflecting layer aluminum layer is changed into a transparent medium layer; the difficulty to be solved first of all by changing the reflecting layer aluminum layer into the transparent medium layer is to thermoprint the cursor reflecting layer, and the thermoprint cursor identification prior art mainly has two schemes: the first scheme is to replace a positioning tracking recognition system of a gilding press, and the second scheme is to reserve a reflecting layer aluminum layer of a holographic positioning gilding film; the second solution is obviously more feasible from the view of printing factory cost and gold stamping positioning precision. The invention determines local positioning basic aluminum washing from comprehensive consideration of retaining a positioning cursor, holographic positioning gold stamping patterns and the like, and is a relatively feasible solution.
Disclosure of Invention
The invention aims to solve the technical problem of providing a production process of a holographic positioning film for local aluminum washing, which can realize local aluminum washing, so that the prepared holographic positioning film has exquisite patterns and strong transparent effect, can completely reserve positioning cursors for gold stamping, and is beneficial to improving the gold stamping positioning precision. The technical scheme adopted is as follows:
a production process of a holographic positioning film for local aluminum washing is characterized by comprising the following steps of: the method sequentially comprises the following steps: (1) Coating a release layer and an information layer on the upper surface of the base film in sequence; (2) Directly molding a hologram pattern layer on an upper surface of the information layer; (3) Coating a first protective layer on the upper surface of the information layer to fully cover the information layer; (4) Plating an aluminum plating layer on the first protective layer to fully cover the first protective layer; (5) Coating a second protective layer on the upper surface of the aluminized layer outside the area where the holographic pattern layer is positioned; (6) Performing alkali washing on the aluminized layer in the area not covered by the second protective layer, and removing the aluminized layer above the holographic pattern layer to form an aluminized area; (7) Plating zinc sulfide dielectric layers on the upper surface of the first protective layer and the upper surface of the second protective layer in the aluminum removing area, so that the upper surface of the zinc sulfide dielectric layer plated on the first protective layer and the upper surface of the peripheral aluminum plating layer are positioned on the same plane; (8) And coating a back adhesive layer on the upper surface of the zinc sulfide dielectric layer, and cutting to obtain the holographic positioning film.
In the production process of the holographic positioning film, the first protective layer and the aluminized layer are sequentially and fully covered on the upper surface of the information layer, then the second protective layer is coated on the upper surface of the aluminized layer outside the area where the holographic pattern layer is located, the second protective layer can be accurately positioned and printed in a printing mode, when the aluminized layer is subjected to alkaline washing, the first protective layer can effectively protect the information layer and the holographic pattern layer on the information layer from being damaged by alkaline solution, the second protective layer can effectively protect the aluminized layer outside the holographic pattern layer from being washed by alkaline solution, so that the area, which is not covered by the second protective layer, of the aluminized layer is washed by alkaline solution, accurate local aluminum removal is realized, and the holographic positioning film which is intersected by the holographic pattern layer and the aluminized layer and has clear boundaries can be prepared; after partial aluminum washing, firstly plating a zinc sulfide dielectric layer in an aluminum removing area of an aluminum plating layer, and then coating a back glue layer on the upper surfaces of the zinc sulfide dielectric layer and a second protective layer, so that the aluminum plating layer and the zinc sulfide dielectric layer in the prepared holographic positioning film are alternately replaced, the patterns are exquisite, and as the zinc sulfide dielectric layer is plated in the aluminum removing area, the zinc sulfide dielectric layer has a good protection effect on holographic patterns, the coating is effectively protected from being corroded during back glue, meanwhile, the reflection effect of the zinc sulfide dielectric layer is strong, the holographic pattern layer is reversely lined, the metal texture of the holographic pattern layer is enhanced, and the prepared holographic positioning film has a very strong transparent effect while the patterns are exquisite, so that the holographic laser effect is effectively reflected. In addition, the positioning cursor for gold stamping can be completely reserved on the aluminized layer outside the area where the holographic pattern layer is located, so that the electric eye tracking positioning is convenient, the gold stamping positioning precision is improved, and the holographic positioning film after local aluminum washing can be used for carrying out accurate hot stamping on the packaging paper.
In the preferred scheme, the base film is a PET base film, and the thickness value of the PET base film is 14-22 um. In the more preferable scheme, the base film is a 15um PET gold stamping base film in comprehensive consideration of cost and various performances.
Preferably, the information layer is formed by mixing polyacrylate resin and thermosetting acrylic resin. The thermosetting acrylic resin is added into the formula of the coating, the thermosetting coating has limited cross-linking due to thermosetting reaction, and the coating after thermosetting reaction has good luster and hardness and excellent solvent resistance, so that the defects of holographic pattern layer deletion, poor transparency and the like caused by poor solvent resistance of the information layer can be avoided when the first protective layer is coated.
In a preferred embodiment, the thickness of the information layer is 0.8-1.5 um.
In a preferred scheme, the release layer is formed by coating organic silicon resin.
In a preferred scheme, the thickness of the release layer is 0.01-0.1 um.
In a preferred embodiment, the first protective layer is formed by mixing a polyacrylic resin, a thermosetting cellulose ester resin and a functional modified polyacrylic resin. The functional modified polyacrylic resin contains at least one of nitrogen modified polyacrylic resin and acrylonitrile modified polyacrylic resin. The coating formula of the first protective layer contains thermosetting cellulose ester resin, and the thermosetting cellulose ester resin has high crosslinking density due to overhigh hydroxyl content (hydroxyl content is 6-12 (mgKOH/g)), so that poor adhesion with aluminum is caused, and the aluminum layer can be quickly separated from the first protective layer in the shortest time during local aluminum washing, thereby improving the aluminum washing speed; meanwhile, the first protective layer coating formula also contains nitrogen-containing modified polyacrylate resin, and the special nitrogen-containing functional groups contained in the nitrogen-containing modified polyacrylate resin enable the coating to have excellent adhesive strength with transparent medium zinc sulfide; through reasonable collocation to first protective layer coating formula, three main functions of first protective layer coating have been given: protecting holographic pattern layer, enhancing adhesion of medium and rapidly dealuminating when locally washing aluminum.
In a preferred embodiment, the thickness of the first protection layer is 0.5-1.0 um.
In a specific embodiment, in the step (3), the second protection layer is coated on the left and right sides of the surface of the aluminized layer. Therefore, when the aluminized layer is subjected to alkali washing, the middle area of the aluminized layer can be washed away, and the holographic positioning film with clear and accurate boundary can be prepared.
In a preferred scheme, the second protective layer is formed by mixing polyacrylic resin and modified polyacrylate resin. The modified polyacrylate resin copolymer in the coating formula of the second protective layer can provide active functional groups, can obviously improve the adhesion fastness of the coating and an aluminum plating layer, and prevents the positioning cursor from mistakenly washing aluminum to influence the positioning gold stamping precision due to poor adhesion force between the second protective layer and the aluminum layer before partial aluminum washing.
In a preferred embodiment, the thickness of the second protective layer is 0.6-1.2um.
In general, the thickness of the zinc sulfide dielectric layer can be tested by a light transmittance meter, so that the zinc sulfide dielectric layer meets the following conditions: the ultraviolet ray is 48-58, the infrared ray is 68-80, and the visible light is 58-68.
In the production process of the holographic positioning film, a first protective layer and an aluminized layer are sequentially arranged on the upper surface of an information layer in a full coverage mode, a second protective layer is coated on the upper surface of the aluminized layer outside the area where the holographic pattern layer is located, accurate positioning printing can be performed in a printing mode when the second protective layer is coated, the first protective layer can effectively protect the information layer and the holographic pattern layer on the information layer from being damaged by alkaline solution when the aluminized layer is subjected to alkaline washing, the second protective layer can effectively protect the aluminized layer outside the holographic pattern layer from being washed by alkaline solution, so that the area, which is not covered by the second protective layer, of the aluminized layer is washed by alkaline solution, accurate local aluminum removal is realized, and the holographic positioning film with the holographic pattern layer and the aluminized layer alternately and clear boundaries can be manufactured; after local aluminum washing, firstly, a zinc sulfide dielectric layer is plated in an aluminum removing area of an aluminum plating layer, and then, a back glue layer is coated on the upper surfaces of the zinc sulfide dielectric layer and a second protective layer, so that the aluminum plating layer and the zinc sulfide dielectric layer in the prepared holographic positioning film are alternately replaced, the patterns are exquisite, the zinc sulfide dielectric layer has a good protection effect on holographic patterns, the coating is effectively protected from being corroded during back glue, meanwhile, the reflection effect of the zinc sulfide dielectric layer is strong, the holographic pattern layer is reversely lined, the metal texture of the holographic pattern layer is enhanced, and the prepared holographic positioning film has strong metal texture and a transparent effect and effectively reflects holographic effects. In addition, the cursor position is arranged on the aluminized layer outside the area where the holographic pattern layer is, so that tracking and positioning of an electric eye are facilitated, and accurate positioning is realized.
Drawings
FIG. 1 is a process flow diagram of a holographic positioning film production process in accordance with a preferred embodiment of the present invention;
fig. 2 is a schematic structural diagram of a hologram positioning film manufactured by the hologram positioning film manufacturing process shown in fig. 1.
Description of the embodiments
As shown in fig. 1 and 2, the production process of the holographic positioning film for local aluminum washing sequentially comprises the following steps: (1) A release layer 2 and an information layer 3 are sequentially coated on the upper surface of the base film 1; (2) Directly molding the hologram pattern layer 31 on the upper surface of the information layer 3 by a molding machine; (3) Coating a first protective layer 4 on the upper surface of the information layer 3 to fully cover the information layer 3; (4) Plating an aluminized layer 5 on the first protective layer 4 to fully cover the first protective layer 4; (5) Coating a second protective layer 6 on the upper surface of the aluminized layer 5 outside the area where the holographic pattern layer 31 is positioned; (6) Alkali washing is carried out on the aluminized layer 5 in the area which is not covered by the second protective layer 6, and the aluminized layer 5 above the holographic pattern layer 31 is removed to form an aluminized area 51; (7) Plating zinc sulfide dielectric layers 7 on the upper surfaces of the first protective layer 4 and the second protective layer 6 in the aluminum removing area 51, so that the upper surfaces of the zinc sulfide dielectric layers 7 plated on the first protective layer 4 and the upper surfaces of the peripheral aluminum plating layers 5 are on the same plane; (8) And coating a back adhesive layer 8 on the upper surface of the zinc sulfide dielectric layer 7, and cutting to obtain the holographic positioning film.
In this embodiment, the base film 1 is a 15um PET gilt grade base film.
In this embodiment, the release layer 2 is made of an organic silicon resin, and the thickness of the release layer 2 is 0.01-0.1 um.
In this embodiment, the information layer 3 is formed by mixing polyacrylate resin and thermosetting acrylic resin, and the thickness of the information layer 3 is 0.8-1.5 um.
In the present embodiment, the first protective layer 4 is formed by mixing a polyacrylic resin, a thermosetting cellulose ester resin, and a functional modified polyacrylic resin (the functional modified polyacrylic resin may be one or more of a nitrogen modified polyacrylic resin, an acrylonitrile modified polyacrylic resin); the thickness of the first protective layer 4 is 0.5-1.0 um.
In this embodiment, the second protective layer 6 is formed by mixing polyacrylic resin and modified polyacrylate resin; the thickness of the second protective layer 6 is 0.6-1.2um.
In addition, it should be noted that, in the specific embodiments described in the present specification, names of various parts and the like may be different, and all equivalent or simple changes of the structures, features and principles described in the conception of the present invention are included in the protection scope of the present invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the invention as defined in the accompanying claims.
Claims (9)
1. A production process of a holographic positioning film for local aluminum washing is characterized by comprising the following steps of: the method sequentially comprises the following steps: (1) Coating a release layer and an information layer on the upper surface of the base film in sequence; (2) Directly molding a hologram pattern layer on an upper surface of the information layer; (3) Coating a first protective layer on the upper surface of the information layer to fully cover the information layer; (4) Plating an aluminum plating layer on the first protective layer to fully cover the first protective layer; (5) Coating second protective layers on the left side and the right side of the upper surface of the aluminized layer outside the area where the holographic pattern layer is positioned; (6) Performing alkali washing on the aluminized layer in the area not covered by the second protective layer, and removing the middle area of the aluminized layer above the holographic pattern layer to form an aluminized area; (7) Plating zinc sulfide dielectric layers on the upper surface of the first protective layer and the upper surface of the second protective layer in the aluminum removing area, so that the upper surface of the zinc sulfide dielectric layer plated on the first protective layer and the upper surface of the peripheral aluminum plating layer are positioned on the same plane; (8) And coating a back adhesive layer on the upper surface of the zinc sulfide dielectric layer, and cutting to obtain the holographic positioning film.
2. The process for producing the holographic positioning film for local aluminum washing according to claim 1, wherein the process comprises the following steps of: the base film is a PET base film, and the thickness value of the PET base film is 14-22 um.
3. The process for producing the holographic positioning film for local aluminum washing according to claim 2, wherein the process comprises the following steps of: the base film is a PET gold stamping grade base film with 15 um.
4. The process for producing the holographic positioning film for local aluminum washing according to claim 1, wherein the process comprises the following steps of: the thickness of the information layer is 0.8-1.5 um.
5. The process for producing the holographic positioning film for local aluminum washing according to claim 1, wherein the process comprises the following steps of: the release layer is formed by coating organic silicon resin; the thickness of the release layer is 0.01-0.1 um.
6. The process for producing the holographic positioning film for local aluminum washing according to claim 1, wherein the process comprises the following steps of: the first protective layer is formed by mixing polyacrylic resin, thermosetting cellulose ester resin and functional modified polyacrylic resin.
7. The process for producing the holographic positioning film for local aluminum washing according to claim 1 or 6, wherein the process comprises the following steps of: the thickness of the first protective layer is 0.5-1.0 um.
8. The process for producing the holographic positioning film for local aluminum washing according to claim 1, wherein the process comprises the following steps of: the second protective layer is formed by mixing polyacrylic resin and modified polyacrylate resin.
9. The process for producing the holographic positioning film for local aluminum washing according to claim 1 or 8, wherein the process comprises the following steps of: the thickness of the second protective layer is 0.6-1.2um.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110217453.XA CN112877002B (en) | 2021-02-26 | 2021-02-26 | Holographic positioning film production process for local aluminum washing |
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| CN202110217453.XA CN112877002B (en) | 2021-02-26 | 2021-02-26 | Holographic positioning film production process for local aluminum washing |
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| CN112877002A CN112877002A (en) | 2021-06-01 |
| CN112877002B true CN112877002B (en) | 2023-10-13 |
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| CN202380364U (en) * | 2011-11-24 | 2012-08-15 | 浙江美浓丝网印刷有限公司 | Vacuum double-plating transfer paper |
| CN103640351A (en) * | 2013-11-26 | 2014-03-19 | 浙江亚欣包装材料有限公司 | Production technology capable of combining locating aluminum washing and drum gravure |
| CN103862907A (en) * | 2014-04-08 | 2014-06-18 | 山东泰宝防伪技术产品有限公司 | Colorful holographic numerical code information thermoprint foil and preparation method thereof |
| CN104385801A (en) * | 2014-11-18 | 2015-03-04 | 绍兴京华激光制品有限公司 | Micro-nano holographic anti-counterfeiting film for paper certificates, and production process and application thereof |
| CN108608752A (en) * | 2018-04-04 | 2018-10-02 | 浙江亚欣包装材料有限公司 | The production technology of film is scalded in a kind of positioning |
| CN110284372A (en) * | 2019-07-01 | 2019-09-27 | 安徽顺彤包装材料有限公司 | A kind of laser transfer paper and its production technology |
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2021
- 2021-02-26 CN CN202110217453.XA patent/CN112877002B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202380364U (en) * | 2011-11-24 | 2012-08-15 | 浙江美浓丝网印刷有限公司 | Vacuum double-plating transfer paper |
| CN103640351A (en) * | 2013-11-26 | 2014-03-19 | 浙江亚欣包装材料有限公司 | Production technology capable of combining locating aluminum washing and drum gravure |
| CN103862907A (en) * | 2014-04-08 | 2014-06-18 | 山东泰宝防伪技术产品有限公司 | Colorful holographic numerical code information thermoprint foil and preparation method thereof |
| CN104385801A (en) * | 2014-11-18 | 2015-03-04 | 绍兴京华激光制品有限公司 | Micro-nano holographic anti-counterfeiting film for paper certificates, and production process and application thereof |
| CN108608752A (en) * | 2018-04-04 | 2018-10-02 | 浙江亚欣包装材料有限公司 | The production technology of film is scalded in a kind of positioning |
| CN110284372A (en) * | 2019-07-01 | 2019-09-27 | 安徽顺彤包装材料有限公司 | A kind of laser transfer paper and its production technology |
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