Metal lettering film
By introducing a multi-layer structure into the lettering film, especially the anti-scratch coating and the primer treatment layer, the problems of easy scratching and insufficient adhesion of the lettering film are solved, the anti-scratch performance and service life are improved, and the defect rate is reduced.
Patent Information
- Application Number
- CN202520537178.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-25
AI Technical Summary
Existing traditional lettering film materials are easily scratched, leading to scratch defects during production and packaging, resulting in a high product defect rate. They also suffer from uneven film thickness and insufficient adhesion.
The material employs a multi-layer structure design, including a scratch-resistant coating, a PET substrate, a dyed coating, an aluminized layer, a primer layer, an adhesive layer, and a release film layer, with thicknesses set at 1-2μm, 50-54μm, 1-2μm, 2-3μm, 18-20μm, and 50-55μm, respectively. The wear resistance and adhesion of the material are enhanced through functional coatings and pretreatment layers.
It improves the scratch resistance of the lettering film, prevents aluminum peeling and adhesive detachment, reduces product defect rate, and extends service life.
Smart Images
Figure CN223934332U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lettering film technology, and in particular to a metal lettering film. Background Technology
[0002] Traditional lettering films are easily scratched, resulting in defects during production and packaging, leading to numerous rework and repairs and a high product defect rate. Furthermore, due to differences in manufacturing processes and materials, some metal lettering films exhibit uneven film thickness and insufficient adhesion, affecting the lettering effect and the material's lifespan. Utility Model Content
[0003] This invention addresses the technical problems of traditional lettering films, such as poor scratch resistance, aluminum chipping, and adhesive detachment leading to extensive rework and repairs. To solve these problems, this invention aims to provide a metal lettering film. This objective is achieved through the following technical solution:
[0004] A metal lettering film is provided, comprising, in sequence, an anti-scratch coating, a PET substrate, a dyed coating, an aluminum plating layer, a primer layer, an adhesive layer, and a release film layer; the thickness of the anti-scratch coating is 1-2 μm, and the thickness of the primer layer is 2-3 μm.
[0005] The anti-scratch coating is a functional coating that protects the entire surface of the metal lettering film, enhances wear resistance, and increases the surface hardness from 2-3H to 4-5H. The primer layer improves the surface tension of the material and increases the adhesion between the adhesive layer and the aluminized layer.
[0006] Furthermore, a pretreatment coating is provided between the scratch-resistant coating and the PET substrate.
[0007] The pretreatment coating is a functional layer that makes the anti-scratch coating bond more firmly to the surface of the PET substrate, preventing the anti-scratch coating from falling off.
[0008] Furthermore, the thickness of the pretreatment coating is 1-2 μm.
[0009] Furthermore, the thickness of the PET substrate is 50-54 μm.
[0010] The PET substrate is a carrier layer used for engraving and achieving a metallic texture.
[0011] Furthermore, the thickness of the dyed coating is 2-3 μm.
[0012] The dyeing coating is a functional layer that can achieve color effects.
[0013] Furthermore, the thickness of the aluminum plating layer is 1-2 μm.
[0014] The aluminum plating layer is a functional layer that can achieve a metallic effect.
[0015] Furthermore, the thickness of the self-adhesive layer is 18-20 μm.
[0016] The self-adhesive layer can provide adhesive strength.
[0017] Furthermore, the thickness of the release film layer is 50-55 μm.
[0018] The release film layer protects the adhesive surface of the metal lettering film from the release adhesive surface, preventing self-adhesion. It should be removed before use.
[0019] Furthermore, the pretreatment coating is a polyurethane layer.
[0020] Furthermore, the primer layer is a modified acrylate layer.
[0021] Preferably, the scratch-resistant coating is a nano-modified acrylate layer.
[0022] Preferably, the dyeing coating is made of a copper-zinc alloy ink mixture, wherein the metallic color of the dyeing coating is either rose gold or bright silver.
[0023] The advantages compared to existing technologies are:
[0024] This invention provides a metal lettering film that enhances scratch resistance by adding a scratch-resistant coating, thereby improving the surface scratch resistance of the material and making it less prone to scratches during production and packaging, thus reducing product defect rates. Furthermore, the addition of a primer layer improves surface tension and increases the adhesion between the adhesive layer and the aluminized layer, solving the problem of aluminum peeling and adhesive detachment in traditional metal lettering films, which leads to extensive rework and repairs. Attached Figure Description
[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the structure of the metal lettering film in Embodiment 1 of this utility model;
[0027] Figure 2 This is a schematic diagram of the layer structure of the metal lettering film in Embodiment 1 of this utility model;
[0028] Figure 3 This is a schematic diagram of the layer structure of the metal lettering film in Comparative Example 1 of this utility model;
[0029] Explanation of the markings in the image:
[0030] 1-Scratch-resistant coating; 2-PET substrate; 3-Dyeing coating; 4-Aluminum plating layer; 5-Primer coating layer; 6-Adhesive layer; 7-Release film layer; 8-Pre-treatment coating. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0032] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.
[0033] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.
[0034] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.
[0035] The terms "parallel" and "perpendicular" do not mean that the components must be absolutely parallel or perpendicular, but rather that they can be slightly tilted. For example, "parallel" simply means that its direction is more parallel than "perpendicular," not that the structure must be completely parallel, but that it can be slightly tilted.
[0036] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0037] Example 1
[0038] Please see Figures 1-2 The metal lettering film shown includes, from top to bottom, an anti-scratch coating 1, a PET substrate 2, a dyed coating 3, an aluminized layer 4, a primer layer 5, an adhesive layer 6, and a release film layer 7. The thickness of the anti-scratch coating 1 is 1-2 μm, and the thickness of the primer layer 5 is 2-3 μm. In this embodiment, the thickness of the anti-scratch coating 1 is 1.5 μm, and the thickness of the primer layer 5 is 2.5 μm. The anti-scratch coating 1 is a functional coating that protects the overall surface of the metal lettering film and enhances its wear resistance. The primer layer 5 improves the surface tension of the material and increases the adhesion between the adhesive layer 6 and the aluminized layer 4. The primer layer 5 is a modified acrylic layer, and the anti-scratch coating 1 is a nano-modified acrylic layer.
[0039] A pretreatment coating 8 is further provided between the scratch-resistant coating 1 and the PET substrate 2. The pretreatment coating 8 is a functional layer that strengthens the surface bond between the scratch-resistant coating 1 and the PET substrate 2, preventing the scratch-resistant coating 1 from peeling off. The thickness of the pretreatment coating 8 is 1-2 μm. In this embodiment, the thickness of the pretreatment coating 8 is 1.5 μm. The pretreatment coating 8 is a polyurethane layer. The thickness of the PET substrate 2 is 50-54 μm. In this embodiment, the thickness of the PET substrate 2 is 52 μm. The PET substrate 2 serves as a carrier layer for lettering and achieving a metallic texture. The thickness of the dyeing coating 3 is 2-3 μm. In this embodiment, the thickness of the dyeing coating 3 is 2.5 μm. The dyeing coating 3 is a functional layer that achieves color effects. The dyeing coating 3 is made of a copper-zinc alloy ink mixture, and the metallic color of the dyeing coating 3 is bright silver. The thickness of the aluminum plating layer 4 is 1-2 μm. In this embodiment, the thickness of the aluminum plating layer 4 is 1.5 μm. The aluminum plating layer 4 is a functional layer that achieves a metallic effect. The thickness of the self-adhesive layer 6 is 18-20 μm. In this embodiment, the thickness of the self-adhesive layer 6 is 19 μm. The self-adhesive layer 6 provides adhesive strength. The thickness of the release film layer 7 is 50-55 μm. In this embodiment, the thickness of the release film layer 7 is 52 μm. The release film layer 7 protects the material adhesive surface and the release adhesive surface of the metal lettering film, preventing self-adhesion. It should be removed before use.
[0040] The method for preparing a metal lettering film includes the following steps:
[0041] S1. Take a PET substrate 2 with a thickness of 52μm, and apply the dye coating 3 to the non-corona-electrode surface of the PET substrate 2; the dye coating 3 is made of a copper-zinc alloy ink mixture, its metallic color is bright silver, and the thickness of the dye coating 3 is 2.5μm;
[0042] S2. Aluminum plating is performed on the dyed coating 3 to prepare an aluminum plating layer 4, and a silvery-white effect is formed by electroplating aluminum. The thickness of the aluminum plating layer 4 is 1.5 μm.
[0043] S3. Perform a 2.0KW corona treatment on the PET substrate 2, and apply a pretreatment coating 8 to the corona surface of the PET substrate 2. The pretreatment coating 8 is a polyurethane layer with a thickness of 1.5μm.
[0044] S4. Apply anti-scratch coating 1 onto pre-treated coating 8. Anti-scratch coating 1 is made of nano-modified acrylic ester and has a thickness of 1.5 μm.
[0045] S5. Apply the primer layer 5 onto the aluminum plating layer 4. The primer layer 5 is a modified acrylic layer with a thickness of 2.5 μm. The primer layer 5 can enhance the adhesion between the self-adhesive layer 6 and the aluminum plating layer 4.
[0046] S6. Apply an adhesive layer 6 to the primer layer 5, the thickness of the adhesive layer 6 being 19 μm;
[0047] S7. A release film layer 7 is bonded onto the self-adhesive layer 6. The thickness of the release film layer 7 is 52μm, thus completing the preparation of the metal lettering film.
[0048] Comparative Example 1
[0049] Figure 3 This is a schematic diagram of the layer structure of the metal lettering film in Comparative Example 1 of this utility model. Comparative Example 1 is a metal lettering film in the prior art, which includes, from top to bottom, a PET substrate, a dyed coating, an aluminum plating layer, an adhesive layer, and a release film layer.
[0050] Compared with the prior art, the present invention provides a metal lettering film, which has the following beneficial effects:
[0051] 1. The scratch resistance has been improved from 2-3H to 4-5H, and the scratch-resistant coating will not cause scratches when it comes into contact with other material surfaces;
[0052] 2. After the metal lettering film is applied, the aluminum plating layer will not peel off, increasing the material's lifespan;
[0053] 3. The adhesive performance is more stable. When using 1500gf / inch glue as the self-adhesive layer coating, there will be no abnormal delamination.
[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A metal lettering film, characterized in that, It includes, in sequence, an anti-scratch coating, a PET substrate, a dyed coating, an aluminized layer, a primer layer, an adhesive layer, and a release film layer; the thickness of the anti-scratch coating is 1-2 μm, and the thickness of the primer layer is 2-3 μm.
2. The metal lettering film as described in claim 1, characterized in that, A pretreatment coating is also provided between the scratch-resistant coating and the PET substrate.
3. The metal lettering film as described in claim 2, characterized in that, The thickness of the pretreatment coating is 1-2 μm.
4. The metal lettering film as described in claim 3, characterized in that, The thickness of the PET substrate is 50-54 μm.
5. The metal lettering film as described in claim 4, characterized in that, The thickness of the dyed coating is 2-3 μm.
6. The metal lettering film as described in claim 5, characterized in that, The thickness of the aluminum plating layer is 1-2 μm.
7. The metal lettering film as described in claim 6, characterized in that, The thickness of the self-adhesive layer is 18-20 μm.
8. The metal lettering film as described in claim 7, characterized in that, The thickness of the release film is 50-55 μm.
9. The metal lettering film as described in claim 8, characterized in that, The pretreatment coating is a polyurethane layer.
10. The metal lettering film as described in claim 9, characterized in that, The primer layer is a modified acrylic layer.