UV repeatable transfer multi-structure holographic packaging material and preparation method therefor

Abstract

The present invention relates to the technical field of packaging materials. Disclosed is a UV repeatable transfer multi-structure holographic packaging material, comprising a thin film layer, a laminating grade chemical coating layer, a UV coating layer, a laser information layer, a dielectric layer, an adhesive layer and a paper layer, wherein the thin film layer, the laminating grade chemical coating layer, the UV coating layer and the laser information layer are arranged in sequence from top to bottom. The UV repeatable transfer multi-structure holographic packaging material further comprises a registered printing layer and a transfer base coating layer, and the laser information layer, the registered printing layer, the dielectric layer, the transfer base coating layer, the adhesive layer and the paper layer are arranged in sequence from top to bottom. Further disclosed in the present invention is a method for preparing the UV repeatable transfer multi-structure holographic packaging material. The present invention can realize repeatable transfer of laser information, is cost-effective, and has good forming effects, high production efficiency, and high applicability.

Description

A UV Repeated Transfer Type Multi-Structure Holographic Packaging Material and Its Preparation Method Technical Field

[0001] The present invention relates to the technical field of packaging materials, and in particular to a UV repeated transfer type multi-structure holographic packaging material and its preparation method. Background Art

[0002] The production process of existing holographic packaging materials is generally as follows: apply a bonding coating on a base film, then perform laser holographic embossing on the film to emboss laser information onto the bonding coating of the film, then perform vacuum aluminizing on the bonding coating layer of the film, and finally apply glue on the aluminized layer surface to composite with paper. After composite, peel off the film so that the aluminum layer and the laser information layer on the film are transferred to the paper together. The laser information of the prepared packaging material cannot be transferred, and there is no laser information on the peeled film. If it is necessary to prepare this holographic packaging material again, it is necessary to coat the film again, and then perform laser embossing, aluminizing and composite. The production cycle is very long and the cost is high. Summary of the Invention

[0003] In view of the above-mentioned deficiencies existing currently, the present invention provides a UV repeated transfer type multi-structure holographic packaging material and its preparation method, which can achieve repeated transfer of laser information, has low cost, good forming effect, high production efficiency and strong applicability.

[0004] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

[0005] A UV repeated transfer type multi-structure holographic packaging material includes a film layer, a bonding grade chemical coating layer, a UV coating layer, a laser information layer, a dielectric layer, an adhesive layer, and a paper layer. The film layer, the bonding grade chemical coating layer, the UV coating layer, and the laser information layer are arranged in sequence from top to bottom. The UV repeated transfer type multi-structure holographic packaging material further includes a positioning printing layer and a transfer type bottom coating layer. The laser information layer, the positioning printing layer, the dielectric layer, the transfer type bottom coating layer, the adhesive layer, and the paper layer are arranged in sequence from top to bottom.

[0006] According to one aspect of the present invention, the coating dry weight of the transfer type bottom coating layer is 1 ± 0.1 grams per square meter.

[0007] According to one aspect of the present invention, the coating dry weight of the UV coating layer is 8 - 10 grams per square meter.

[0008] According to one aspect of the present invention, the coating dry weight of the bonding grade chemical coating layer is 1.1 - 1.2 grams per square meter.

[0009] According to one aspect of the present invention, the dielectric layer is a vacuum evaporation dielectric layer, including aluminum or zinc sulfide.

[0010] According to one aspect of the present invention, the adhesive layer is an aqueous glue layer.

[0011] According to one aspect of the present invention, the thin film layer is a PET film.

[0012] According to one aspect of the present invention, the thickness of the PET film is 15 - 18 microns.

[0013] A preparation method of a UV repeated transfer type multi - structure holographic packaging material includes the following steps:

[0014] Coat a bonding - grade chemical coating on the PET film to form a bonding - grade chemical coating layer;

[0015] Coat a UV coating on the bonding - grade chemical coating layer, perform UV in - line embossing to obtain a UV coating layer and a laser information layer; the laser information layer is divided into Pattern A and Pattern B;

[0016] Perform in - line positioning printing on the laser information layer to form a positioning printing layer;

[0017] Perform vacuum evaporation on the positioning printing layer, deposit aluminum or zinc sulfide to form a dielectric layer;

[0018] Coat a transfer - type primer layer on the dielectric layer, and the coating dry weight is 1 ± 0.1 grams per square meter;

[0019] Apply an aqueous glue on Pattern A, then bond it with the base paper material, and then in - line peel off the PET film at Pattern A;

[0020] Apply an aqueous glue on Pattern B, then bond it with the base paper material, and then in - line peel off the PET film at Pattern B, thus forming the target product, the UV repeated transfer type multi - structure holographic packaging material.

[0021] According to one aspect of the present invention, it further includes the following steps: <ocksolid> <ocksolid>

[0022] Perform in - line positioning printing on the peeled - off PET film again;

[0023] Repeat the steps after vacuum evaporation to obtain the UV repeated transfer type multi - structure holographic packaging material again. Repeat multiple times until the brightness of the laser information layer decays.

[0024] Advantages of the present invention include: a UV repetitive transfer multi-structure holographic packaging material comprising a film layer, a laminating-grade chemical coating layer, a UV coating layer, a laser information layer, a dielectric layer, an adhesive layer, and a paper layer, wherein the film layer, laminating-grade chemical coating layer, UV coating layer, and laser information layer are sequentially arranged from top to bottom; and a positioning printing layer and a transfer-type primer layer, wherein the laser information layer, positioning printing layer, dielectric layer, transfer-type primer layer, adhesive layer, and paper layer are sequentially arranged from top to bottom. By utilizing the transfer-type primer layer and the aforementioned process, the present invention not only enables laser information transfer but also repetitive transfer, thereby saving costs, improving production efficiency, achieving excellent molding effects, and enhancing applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] FIG1 is a schematic structural diagram of the UV repeated transfer multi-structure holographic packaging material of the present invention;

[0027] FIG2 is a schematic diagram of the production process flow of the UV repeated transfer multi-structure holographic packaging material according to the present invention.

[0028] The names corresponding to the serial numbers in the figure are as follows:

[0029] 1. PET film; 2. Lamination-grade chemical coating layer; 3. UV coating layer; 4. Laser information layer; 5. Positioning printing layer; 6. Dielectric layer; 7. Transfer-type primer layer; 8. Water-based glue layer; 9. Paper layer. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1

[0032] As shown in Figure 1, a UV repetitive transfer multi-structure holographic packaging material comprises, from top to bottom, a film layer, a laminating-grade chemical coating layer 2, a UV coating layer 3, a laser information layer 4, a positioning printing layer 5, a vacuum-evaporated dielectric layer 6, a transfer-type primer layer 7, an adhesive layer, and a paper layer 9. Compared to existing UV laser embossing coatings, which are all laminating coatings and cannot be transferred after embossing the laser information and then laminating it with the paper, this packaging material not only enables laser information transfer but also repetitive transfer, saving costs and improving production efficiency.

[0033] In this embodiment, the dry coating weight of the transfer-type primer layer 7 is 1±0.1 g / m2.

[0034] In this embodiment, the dry coating weight of the UV coating layer 3 is 8-10 grams per square meter.

[0035] In this embodiment, the dry coating weight of the laminating-grade chemical coating layer 2 is 1.1-1.2 grams per square meter; the laminating-grade chemical coating layer 2 can be made of any synthetic resin coating.

[0036] In this embodiment, the vacuum-evaporated dielectric layer 6 includes aluminum or zinc sulfide, and the adhesive layer is a water-based glue layer 8 .

[0037] In this embodiment, the paper layer 9 is made of copper foil white paper, white cardboard, etc.

[0038] In this embodiment, the laser information layer 4 adopts any one of beam laser, plain laser, and brushed beam laser. The film layer is a PET film 1, and the thickness of the PET film 1 is 15-18 microns.

[0039] Example 2

[0040] As shown in Figure 1, a UV repetitive transfer multi-structure holographic packaging material comprises, from top to bottom, a film layer, a laminating-grade chemical coating layer 2, a UV coating layer 3, a laser information layer 4, a positioning printing layer 5, a vacuum-evaporated dielectric layer 6, a transfer-type primer layer 7, an adhesive layer, and a paper layer 9. Compared to existing UV laser embossing coatings, which are all laminating coatings and cannot be transferred after embossing the laser information and then laminating it with the paper, this packaging material not only enables laser information transfer but also repetitive transfer, saving costs and improving production efficiency.

[0041] In this embodiment, the dry coating weight of the transfer-type primer layer 7 is 1±0.1 g / m2.

[0042] In this embodiment, the dry coating weight of the UV coating layer 3 is 8-10 grams per square meter.

[0043] In this embodiment, the dry coating weight of the laminating-grade chemical coating layer 2 is 1.1-1.2 grams per square meter; the laminating-grade chemical coating layer 2 can be made of any synthetic resin coating.

[0044] In this embodiment, the vacuum-evaporated dielectric layer 6 includes aluminum or zinc sulfide, and the adhesive layer is a water-based glue layer 8 .

[0045] In this embodiment, the paper layer 9 is made of copper foil white paper, white cardboard, etc.

[0046] In this embodiment, the laser information layer 4 adopts any one of beam laser, plain laser, and brushed beam laser. The film layer is a PET film 1, and the thickness of the PET film 1 is 15-18 microns.

[0047] As shown in FIG1 and FIG2, this embodiment also provides a method for preparing a UV repeated transfer type multi-structure holographic packaging material, comprising the following steps:

[0048] PET film 1 + pre-coating layer, i.e. coating a laminating-grade chemical coating on the PET film 1, with a coating dry weight of 1.1-1.2 g / m2, to form a laminating-grade chemical coating layer 2;

[0049] A UV coating is applied on the laminating-grade chemical coating layer 2 at a dry weight of 8 to 10 grams per square meter, and UV line molding is performed to obtain a UV coating layer 3 and a laser information layer 4. The laser information layer 4, or in other words, the entire PET film 1 at this time, is divided into pattern A and pattern B.

[0050] Perform line positioning printing on the laser information layer 4 to form a positioning printing layer 5;

[0051] Vacuum evaporation is performed on the positioning printing layer 5 to plate aluminum or zinc sulfide to form a vacuum evaporated dielectric layer 6;

[0052] A transfer primer layer 7 is coated on the dielectric layer 6, with a dry coating weight of 1±0.1 g / m2;

[0053] Apply water-based glue to pattern A, adhere it to the base paper material, and then peel off the PET film 1 at pattern A (after peeling, there is no vacuum-evaporated medium layer 6 on pattern A, while the laser information layer 4 and vacuum-evaporated medium layer 6 remain on pattern B).

[0054] Apply water-based glue to pattern B, adhere it to the base paper material, and then peel off the PET film 1 at pattern B to form the target product, a UV repeated transfer type multi-structure holographic packaging material (at this time, on the peeled PET film 1, there is no vacuum evaporated medium layer 6 on pattern A and pattern B, but the laser information layer 4 is still retained);

[0055] The peeled PET film 1 is then subjected to line positioning printing;

[0056] The steps after vacuum evaporation can be repeated to produce UV repetitive transfer type multi-structure holographic packaging materials, and this process can be repeated multiple times until the brightness of the laser information layer 4 decays. In this way, the PET film 1 can be reused and the UV repetitive transfer type multi-structure holographic packaging materials can be continuously reproduced, greatly reducing costs and improving production efficiency.

[0057] In this embodiment, the difference and beneficial effects of the above process compared with the prior art are:

[0058] 1. Existing UV laser embossing coatings are all laminated coatings. After embossing the laser information, it is laminated with the paper and the laser information cannot be transferred. However, through the above process steps and other settings, not only can the laser information be transferred, but it can also be transferred repeatedly, saving costs;

[0059] 2. The first method of achieving the positioning laser effect in the existing technology is to use the full-page positioning laser spray aluminum paper. Not only does it have the positioning laser pattern, but it also has a full-page aluminum layer. During printing, it needs to be covered with a large amount of white ink. Moreover, when the finished product is glued together, the areas where the aluminum layer and the coating are located are difficult for the glue to penetrate, resulting in loose pasting and box explosion. However, through the above-mentioned process steps and other settings, through the partial transfer method, only the positioning laser pattern and the aluminum layer are retained, and the rest is white paper, which makes the molding better (see partial composite A pattern);

[0060] 3. The second existing method for achieving a registered laser effect involves hot stamping the laser pattern onto aluminum-coated paper after printing. However, hot stamping on aluminum-coated paper can result in issues such as inconsistent hot stamping and scattered hot stamping. By using the aforementioned process steps and other configurations, a partial transfer method is employed to preserve the base laser pattern while reserving the hot stamping area. Because the reserved area is the base paper, the hot stamping is more durable and production efficiency is improved (see partial composite B pattern).

[0061] Advantages of the present invention: Through the transfer-type primer layer 7 and the above-mentioned process, the present invention can not only realize laser information transfer but also repeat transfer, saving costs, improving production efficiency, having good molding effect and strong applicability.

[0062] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A UV repeated transfer type multi-structure holographic packaging material, comprising a film layer, a laminating-grade chemical coating layer (2), a UV coating layer (3), a laser information layer (4), a dielectric layer (6), an adhesive layer, and a paper layer (9), wherein the film layer, the laminating-grade chemical coating layer (2), the UV coating layer (3), and the laser information layer (4) are arranged in sequence from top to bottom, and characterized in that: The UV repeated transfer type multi-structure holographic packaging material further comprises a positioning printing layer (5) and a transfer type primer layer (7), wherein the laser information layer (4), the positioning printing layer (5), the medium layer (6), the transfer type primer layer (7), the adhesive layer, and the paper layer (9) are arranged in sequence from top to bottom.

2. The UV repeated transfer type multi-structure holographic packaging material according to claim 1, characterized in that: The dry coating weight of the transfer-type primer layer (7) is 1±0.1 g / m2.

3. The UV repeated transfer type multi-structure holographic packaging material according to claim 2, characterized in that: The dry coating weight of the UV coating layer (3) is 8 to 10 grams per square meter.

4. The UV repeated transfer type multi-structure holographic packaging material according to claim 2, characterized in that: The dry coating weight of the laminating-grade chemical coating layer (2) is 1.1-1.2 grams per square meter.

5. The UV repeated transfer type multi-structure holographic packaging material according to claim 2, characterized in that: The dielectric layer (6) is a vacuum evaporated dielectric layer (6) comprising aluminum or zinc sulfide.

6. The UV repeated transfer type multi-structure holographic packaging material according to claim 2, characterized in that: The adhesive layer is a water-based glue layer (8).

7. The UV repeated transfer type multi-structure holographic packaging material according to claim 1, characterized in that: The film layer is a PET film (1).

8. The UV repeated transfer type multi-structure holographic packaging material according to claim 7, characterized in that: The thickness of the PET film (1) is 15-18 microns.

9. A method for preparing a UV repeated transfer multi-structure holographic packaging material, characterized in that: The following steps are involved: Applying a laminating-grade chemical coating on a PET film (1) to form a laminating-grade chemical coating layer (2); UV coating is applied on the laminating-grade chemical coating layer (2), and UV line molding is performed to obtain a UV coating layer (3) and a laser information layer (4); the laser information layer (4) is divided into pattern A and pattern B; Performing line positioning printing on the laser information layer (4) to form a positioning printing layer (5); Vacuum evaporation is performed on the positioning printing layer (5) to plate aluminum or zinc sulfide to form a dielectric layer (6); Coating a transfer-type primer layer (7) on the dielectric layer (6) with a dry coating weight of 1±0.1 g / m2; Apply water-based glue on pattern A, adhere it to the base paper material, and then peel off the PET film (1) at pattern A along the line; Water-based glue is applied on pattern B, and then bonded to the base paper material, and then the PET film (1) at pattern B is peeled off along the line to form the target product, UV repeated transfer type multi-structure holographic packaging material.

10. The method for preparing the UV repeated transfer type multi-structure holographic packaging material according to claim 9, characterized in that: The following steps are also included: The peeled PET film (1) is then subjected to line positioning printing; The UV repeated transfer type multi-structure holographic packaging material can be produced again by repeating the steps after vacuum evaporation, and the process is repeated many times until the brightness of the laser information layer (4) decays.

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