VMPE aluminized film with multi-layer structure
By designing a multi-layer structure and introducing a self-healing layer, the problem of easy damage to aluminized films is solved, improving the reliability and durability of aluminized films, especially showing excellent performance in harsh environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- REGO PACKING GZ IND CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-06-26
AI Technical Summary
The aluminum coating of existing VMPE aluminized films is susceptible to mechanical scratches and chemical corrosion, leading to reduced reliability and durability.
It adopts a multi-layer structure design, including a PE substrate layer, an aluminum plating layer, a reinforcement layer, a self-healing layer, and a protective layer. The self-healing layer is a UV-cured acrylic coating containing microcapsules that can automatically repair damage and enhance the edge of the film through an edge protection structure.
It improves the reliability and durability of the aluminized film in harsh environments, enhances the tensile strength and puncture resistance of the film, and reduces the risk of damage to the aluminized layer.
Smart Images
Figure CN224410193U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of packaging film technology, and in particular relates to a VMPE aluminized film with a multi-layer structure. Background Technology
[0002] Metallized film is a flexible packaging material widely used in food, pharmaceuticals, daily chemical products, and industrial products. It is produced by vacuum-depositing an extremely thin layer of aluminum onto the surface of a polymer film (such as PET, BOPP, etc.). This combination of the flexibility and heat-sealability of polymer materials with the bright luster and excellent barrier properties (oxygen barrier, water vapor barrier, and light barrier) of metallic materials effectively extends the shelf life of the contents and enhances the product's appearance.
[0003] The most common VMPE metallized film on the market usually presents a simple three-layer structure: substrate layer / metallized layer / PE heat-sealing layer. When subjected to mechanical scratches and chemical corrosion, the metallized layer is easily damaged, reducing the reliability and durability of VMPE metallized film.
[0004] For example, Chinese patent application number CN202021076153.1 discloses a novel OPP-VMPE composite film, including an OPP film, an ink layer, an adhesive, an aluminum plating layer, and a PE film. The inner surface of the OPP film is printed with an ink layer, the thickness of which is 0.0005-0.003mm. The inner surface of the ink layer is bonded to the VMPE film by an adhesive, the thickness of which is 0.0005-0.003mm. The VMPE film includes a PE film, and an aluminum plating layer is disposed on the outer surface of the PE film. The aluminum plating layer is composited with the ink layer by an adhesive. However, the disadvantage of this technical solution is that the OPP-VMPE composite film has a simple layer structure, with only one PE film on the aluminum plating layer. When subjected to mechanical scratches and chemical corrosion, the aluminum plating layer is easily damaged, reducing the reliability of product quality. Utility Model Content
[0005] The purpose of this invention is to provide a VMPE aluminized film with a multi-layer structure to solve the problems in the prior art. The specific technical solution is as follows:
[0006] A VMPE aluminized film with a multi-layer structure includes, from bottom to top, a PE substrate layer, an aluminized layer, and a protective layer. A self-healing layer is provided on the aluminized layer, and an ink layer is printed inside the protective layer. The self-healing layer is bonded to the ink layer by an adhesive layer.
[0007] Furthermore, the upper surface of the PE substrate layer is subjected to corona treatment, and a reinforcing layer is provided between the PE substrate layer and the aluminum plating layer.
[0008] Furthermore, the thickness of the enhancement layer is 40-90 nm.
[0009] Furthermore, the thickness of the aluminum plating layer is 30-60 nm.
[0010] Furthermore, the self-healing layer is an acrylic coating cured by UV.
[0011] Furthermore, the acrylate coating contains microcapsules, the wall material of which is a brittle polymer, and the core material of which is a low surface tension liquid resin.
[0012] Furthermore, the thickness of the self-healing layer is 1-5 μm.
[0013] Furthermore, the protective layer is a printable polyurethane coating with a thickness of 2-4 μm.
[0014] Furthermore, the VMPE aluminized film has edge protection structures on both sides, with the upper and lower ends of the edge protection structures wrapping around the upper and lower surfaces of the VMPE aluminized film.
[0015] Furthermore, the cross-section of the edge protection structure is planar convex, circular, or elliptical.
[0016] The advantages of this utility model are:
[0017] The PE substrate layer is made of a slow blend of metallocene polyethylene and high-pressure low-density polyethylene, which improves the tensile strength and puncture resistance of the film. The protective layer provides excellent adhesion for the ink layer, facilitating the printing of brand information. The self-healing layer protects the aluminized layer from mechanical scratches and chemical corrosion. In addition, the self-healing layer has the function of automatically repairing film damage, which greatly improves the reliability and durability of VMPE aluminized film in harsh environments. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Explanation of markings in the diagram:
[0020] PE substrate layer 1; reinforcing layer 2; aluminum plating layer 3; self-healing layer 4; adhesive layer 5; ink layer 6; protective layer 7; edge protection structure 8. Detailed Implementation
[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] Example 1
[0024] like Figure 1 As shown, a VMPE aluminized film with a multi-layer structure includes a PE substrate layer 1, an aluminized layer 3 and a protective layer 7 from bottom to top. A self-healing layer 4 is provided on the aluminized layer 3, and an ink layer 6 is printed inside the protective layer 7. The self-healing layer 4 is bonded to the ink layer 6 by an adhesive layer 5.
[0025] The working principle of the above technical solution is as follows: The PE substrate layer 1 is made of metallocene polyethylene and high-pressure low-density polyethylene, which improves the tensile strength and puncture resistance of the film. The protective layer 7 provides excellent adhesion for the ink layer 6, which facilitates the printing of brand information. The self-healing layer 4 can protect the aluminized layer 3 from mechanical scratches and chemical corrosion. In addition, the self-healing layer 4 has the function of automatically repairing film damage, which greatly improves the reliability and durability of VMPE aluminized film in harsh environments.
[0026] Example 2
[0027] like Figure 1 As shown, the upper surface of the PE substrate layer 1 is corona treated, and a reinforcing layer 2 is provided between the PE substrate layer 1 and the aluminum plating layer 3.
[0028] The thickness of the reinforcement layer 2 is 40-90 nm;
[0029] The thickness of the aluminum plating layer 3 is 30-60 nm;
[0030] The working principle of the above technical solution is as follows: Corona treatment is performed on the surface of the PE substrate layer 1 to enhance the adhesion of the aluminum layer during vacuum metallization; a reinforcing layer 2 is coated on the PE substrate layer 1. The material of the reinforcing layer 2 can be polyvinyl alcohol (PVA). The reinforcing layer 2 can form a high barrier layer on the PE substrate layer 1 before vacuum metallization. Even if the metallized layer 3 is slightly damaged during construction, the reinforcing layer 2 can still provide effective barrier, thus improving the barrier effect.
[0031] Example 3
[0032] like Figure 1As shown, the self-healing layer 4 is an acrylic coating cured by UV.
[0033] The acrylate coating contains microcapsules, the wall material of which is a brittle polymer and the core material of which is a low surface tension liquid resin.
[0034] The thickness of the self-healing layer 4 is 1-5 μm;
[0035] The working principle of the above technical solution is as follows: When the self-healing layer 4 and the underlying aluminum-plated layer 3 are scratched and microcracks are generated, the microcapsules will rupture, the liquid resin will flow out and seep into the cracks, and cross-linking and curing will occur under the action of air oxygen or trace moisture, automatically repairing the damage and restoring its barrier performance, which greatly improves the reliability and durability of VMPE aluminum-plated film in harsh environments.
[0036] Example 4
[0037] like Figure 1 As shown, the protective layer 7 is a printable polyurethane coating with a thickness of 2-4 μm;
[0038] The working principle of the above technical solution is as follows: the protective layer 7 provides excellent adhesion to the ink layer 6, which facilitates the printing of brand information. In addition, the protective layer 7 further protects the self-healing layer 4 and the aluminum plating layer 3 underneath.
[0039] Example 5
[0040] like Figure 1 As shown, the VMPE aluminized film has edge protection structures 8 on both sides, and the upper and lower ends of the edge protection structures 8 wrap around the upper and lower surfaces of the VMPE aluminized film.
[0041] The cross-section of the edge protection structure 8 is planar convex, circular, or elliptical;
[0042] The working principle of the above technical solution is as follows: the edge protection structure 8 strengthens the fragile edges of the VMPE aluminized film, reducing the risk of film roll breakage due to edge damage in subsequent processing and improving production yield. In addition, the edge protection structure 8 isolates the edge of the aluminized layer 3 from the external environment, reducing the risk of oxidation of the edge of the aluminized layer 3.
[0043] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A VMPE aluminized film with a multilayer structure, characterized in that, It includes a PE substrate layer (1), an aluminum plating layer (3), and a protective layer (7) from bottom to top. The aluminum plating layer (3) has a self-healing layer (4), and the protective layer (7) has an ink layer (6) printed inside. The self-healing layer (4) is bonded to the ink layer (6) through an adhesive layer (5).
2. The VMPE aluminized film with a multilayer structure according to claim 1, characterized in that, The upper surface of the PE substrate layer (1) is subjected to corona treatment, and a reinforcing layer (2) is provided between the PE substrate layer (1) and the aluminum plating layer (3).
3. The VMPE aluminized film with a multilayer structure according to claim 2, characterized in that, The thickness of the reinforcement layer (2) is 40-90 nm.
4. The VMPE aluminized film with a multilayer structure according to claim 1, characterized in that, The thickness of the aluminum plating layer (3) is 30-60 nm.
5. The VMPE aluminized film with a multilayer structure according to claim 1, characterized in that, The self-healing layer (4) is an acrylic coating cured by UV.
6. The VMPE aluminized film with a multilayer structure according to claim 5, characterized in that, The acrylate coating contains microcapsules, the wall material of which is a brittle polymer and the core material of which is a low surface tension liquid resin.
7. The VMPE aluminized film with a multilayer structure according to claim 6, characterized in that, The thickness of the self-healing layer (4) is 1-5 μm.
8. The VMPE aluminized film with a multilayer structure according to claim 1, characterized in that, The protective layer (7) is a printable polyurethane coating with a thickness of 2-4 μm.
9. The VMPE aluminized film with a multilayer structure according to claim 1, characterized in that, The VMPE aluminized film has edge protection structures (8) on both sides, and the upper and lower ends of the edge protection structures (8) wrap around the upper and lower surfaces of the VMPE aluminized film.
10. A VMPE aluminized film with a multilayer structure according to claim 9, characterized in that, The cross-section of the edge protection structure (8) is planar convex, circular or elliptical.