Composite aluminum laminated film
By introducing a composite structure of bent parts, folding parts, limiting layers and elastic base layer into the aluminum-coated film, the problem of easy damage to the aluminum-coated film during the stretching process is solved, and a higher service life and stability are achieved.
Patent Information
- Application Number
- CN202421352357.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The aluminum-plated film is easily separated from the film during the stretching process, and cracks are prone to appear on the surface of the aluminum film, resulting in damage.
The composite aluminum-coated film structure is adopted, including an aluminum film layer, an adhesion layer, a limiting layer and an elastic base layer. The additional extension is provided through the bent and folded parts, so the limiting layer avoids excessive stretching, and the elastic base layer drives reset.
It effectively avoids damage to the aluminum-plated film during the stretching process and improves the service life of the aluminum-plated film.
Smart Images
Figure CN222905070U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of aluminum-plated films, in particular to a composite aluminum-plated film. Background Art
[0002] Aluminized film is a bright metallic film formed by heating aluminum wire into aluminum vapor through the vacuum aluminizing process, and then precipitating gaseous aluminum molecules onto the surface of the plastic film in a vacuum evaporation chamber. It has a metallic luster and good barrier properties and is widely used in the fields of packaging and decoration.
[0003] The aluminized film is composed of a composite of aluminum and a thin film. When the aluminized film is stretched, the tensile elasticity of aluminum and the polymer film is different, and aluminum has metallic ductility. During the stretching process, the aluminum film is easily separated from the thin film and cracks are easily formed on the surface of the aluminum film. The purpose of the utility model is to improve the structure of the aluminized film to alleviate the problem of the aluminum film being easily damaged during the stretching process. Utility Model Content
[0004] The purpose of the utility model is to provide a composite aluminum-plated film to solve the problems mentioned in the background technology.
[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: including an aluminum film layer, an adhesion layer, a limiting layer and an elastic base layer, the aluminum film layer is bent along any one of the length direction or width direction of the aluminum-plated film to form repeated bending parts, the adhesion layer is located below the aluminum film layer and connected to the aluminum film layer, the limiting layer is located below the adhesion layer and connected to the adhesion layer, the limiting layer does not have tensile elasticity or the tensile elasticity of the limiting layer is less than any one of the tensile elasticities of the aluminum film layer, the adhesion layer and the limiting layer, and the elastic base layer is located below the limiting layer and connected to the limiting layer.
[0006] In order to optimize the above technical solution, further measures are taken: a structure having the same shape and corresponding position as the bent portion is formed on the limiting layer to ensure that the limiting layer can stably cooperate with the bent portion.
[0007] As a further improvement of the above technical solution: it also includes a folding portion, which is located on the bending portion, and the folding portion is used to provide additional stretching. When the bending portion is flattened, the folding portion can be unfolded to prevent the aluminum film layer from cracking due to stretching.
[0008] As a further improvement of the technical solution: the bending direction of the bending portion is parallel to the folding direction of the folding portion, ensuring that the additional stretching amount provided by the folding portion can accurately protect the bending portion.
[0009] As an improvement to the above technical solution: the elastic base layer has a better tensile viscoelasticity than the aluminum film layer, the adhesion layer and the limiting layer. After the aluminum film is stretched and unfolded, the elasticity of the elastic base layer is used to restore the aluminum film.
[0010] From the above description of the structure of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages:
[0011] The utility model provides a composite aluminum-plated film. When performing a stretching action, the bending part and the folding part parallel to the stretching direction are unfolded to provide additional stretching amount for the aluminum-plated film, which can effectively prevent the aluminum film layer with poor stretching elasticity from being damaged due to the stretching action. In addition, the limiting layer can also prevent the aluminum-plated film from being damaged due to excessive stretching, which helps to increase the service life of the aluminum-plated film. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0014] Figure 2 for Figure 1 Schematic diagram of local structure;
[0015] In the figure: aluminum film layer-1, bending portion-101, folding portion-102, adhesion layer-2, limiting layer-3, elastic base layer-4. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] Example
[0018] See also Figure 1-2 The utility model provides a composite aluminum-plated film, including an aluminum film layer 1, an adhesion layer 2, a limiting layer 3, an elastic base layer 4 and a folding portion 102. The aluminum film layer 1 is bent along any one of the length direction or width direction of the aluminum-plated film to form a plurality of bending portions 101. The folding portion 102 is located on the bending portion 101, and the bending direction of the bending portion 101 is parallel to the folding direction of the folding portion 102.
[0019] The adhesion layer 2 is located below the aluminum film layer 1 and connected to the aluminum film layer 1. The adhesion layer 2 is used for the aluminum film layer 1 to adhere to and combine with the aluminum film layer 1 to form the main body of the aluminum-plated film.
[0020] The limiting layer 3 is located below the adhesion layer 2 and is connected to the adhesion layer 2. The limiting layer 3 does not have tensile elasticity or the tensile elasticity of the limiting layer 3 is less than any of the tensile elasticities of the aluminum film layer 1, the adhesion layer 2 and the limiting layer 3. The limiting layer 3 is bent to form a structure with the same shape and corresponding position to the bent portion 101. The limiting layer 3 refers to a material layer that plays a limiting role. Its purpose is to prevent the aluminum-plated film from being damaged due to excessive stretching. A mesh cloth can be used in the specific implementation.
[0021] The elastic base layer 4 is located below the limiting layer 3 and connected to the limiting layer 3. The tensile viscoelasticity of the elastic base layer 4 is better than the tensile elasticity of the aluminum film layer 1, the adhesion layer 2 and the limiting layer 3. The elastic base layer 4 is used to drive the stretched aluminum-plated film to recover through tensile elasticity. Liquid silicone can be used in the specific implementation.
[0022] Working principle: When the aluminized film is stretched along the bending direction of the bending portion 101, the bending portion 101 can be flattened to provide the aluminized film layer 1 with extra stretch in the stretching direction, thereby preventing the aluminum film layer 1 from being damaged during the stretching process. After the bending portion 101 is flattened, the folding portion 102 disposed on the bending portion 101 can be pulled apart with the stretching action, thereby providing the aluminized film with extra stretch in the stretching direction, thereby preventing the aluminum film layer 1 from being damaged, cracked, or separated from the adhesive layer 2 due to the stretching.
[0023] When the folding portion 102 is fully opened, the bending portion 101 and the folding portion 102 cannot provide additional stretching for the aluminized film. If the aluminized film continues to stretch, the limiting layer 3 can play a limiting role to prevent the aluminized film from being stretched further, thereby preventing the aluminum film layer 1 from being damaged. During the stretching process of the aluminized film, the elastic base layer 4 will also be stretched synchronously. After the stretching action is completed, the elastic base layer 4 is in the elastic part to drive the bending portion 101 and the folding portion 102 to reset.
[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A composite aluminum-plated film, characterized in that: include: An aluminum film layer (1), wherein the aluminum film layer (1) is bent in any direction along the length direction or the width direction of the aluminum film to form a plurality of bent portions (101); An adhesion layer (2), the adhesion layer (2) is located below the aluminum film layer (1) and is connected to the aluminum film layer (1); A limiting layer (3), the limiting layer (3) is located below the adhesion layer (2) and connected to the adhesion layer (2), the limiting layer (3) is in a state where it has no tensile elasticity or the tensile elasticity of the limiting layer (3) is less than any of the tensile elasticities of the aluminum film layer (1), the adhesion layer (2) and the limiting layer (3); An elastic base layer (4), the elastic base layer (4) is located below the limiting layer (3) and is connected to the limiting layer (3).
2. The composite aluminum-plated film according to claim 1, characterized in that: The limiting layer (3) is bent to form a structure having the same shape as the bent portion (101) and corresponding position.
3. The composite aluminum-plated film according to claim 1, characterized in that: It also includes a folding portion (102), and the folding portion (102) is located on the bending portion (101).
4. The composite aluminum-plated film according to claim 3, characterized in that: The bending direction of the bending portion (101) is parallel to the folding direction of the folding portion (102).
5. A composite aluminum-plated film according to any one of claims 1 to 4, characterized in that: The tensile viscoelasticity of the elastic base layer (4) is better than the tensile elasticity of the aluminum film layer (1), the adhesion layer (2) and the limiting layer (3).