Scratch-resistant car film based on re-pressing structure

Abstract

The utility model discloses an anti-scratch car film based on a re-pressing structure, which comprises a release paper layer, a bonding layer, a base film layer, a re-pressing structure layer and a wear-resistant layer, the wear-resistant layer, the re-pressing structure layer and the base film layer are sequentially stacked together from top to bottom and are pressed into a car film base body, and the bonding layer is respectively bonded with the base film layer and the release paper layer; the re-pressing structure layer comprises a first polyester film layer, an elastic material film layer and a second polyester film layer, and the first polyester film layer and the second polyester film layer are arranged on the two sides of the elastic material film layer respectively and are pressed into the re-pressing structure layer. The repressing structure layer is used for constructing the elastic buffer layer of the vehicle film, the adhesion phenomenon easily occurring when an existing elastic material is extruded is reduced, the vehicle film can be restored to a certain degree after being scratched, meanwhile, the rebound reaction rate of the elastic buffer layer is increased, and the service life of the vehicle film is prolonged. And the situation that when the hard particles are sputtered to the vehicle film, deep pits are formed in the vehicle film, and the surface layer of the vehicle film is torn is avoided, so that the service life of the vehicle film is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle films, in particular to an anti-scratch vehicle film based on a composite pressure structure. Background Art

[0002] Car film or car cover is a film layer that protects the car paint, preventing the car body from being damaged by sharp objects when it is slightly scratched. However, when the vehicle is driving or parked in an open space, it is inevitable that it will be slightly scratched or splashed by hard particles, which will cause damage to the car body and paint. In order to avoid this situation, people put car films on their cars. However, the existing car films are not scratch-resistant enough, mainly because the elasticity of the car film is not enough to make the car film recover to a certain extent after being scratched. The elastic deformation of the car film is large, so when the hard particles are splashed onto the car film, they will form a deeper depression on the car film and tear the surface of the car film, which will cause damage to the car film, thereby affecting the service life of the car film. Utility Model Content

[0003] To this end, the technical problem to be solved by the utility model is to provide an anti-scratch car film based on a composite pressure structure, and utilize the composite pressure structure layer to construct the elastic buffer layer of the car film, thereby reducing the adhesion phenomenon that is prone to occur in existing elastic materials when squeezed, so that the car film can recover to a certain extent after being scratched, and at the same time improve the rebound reaction rate of the elastic buffer layer, to avoid hard particles from forming deep depressions on the car film and tearing the surface of the car film when splashing onto the car film, thereby increasing the service life of the car film.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A scratch-resistant vehicle film based on a composite pressure structure comprises a release paper layer, an adhesive layer, a base film layer, a composite pressure structure layer and a wear-resistant layer, wherein the wear-resistant layer, the composite pressure structure layer and the base film layer are sequentially stacked together from top to bottom and pressed into a vehicle film substrate, and the adhesive layer is respectively bonded to the base film layer and the release paper layer; the composite pressure structure layer comprises a first polyester film layer, an elastic material film layer and a second polyester film layer, wherein the first polyester film layer and the second polyester film layer are arranged on both sides of the elastic material film layer and pressed into a composite pressure structure layer

[0006] In the above-mentioned anti-scratch car film based on the composite pressure structure, in the composite pressure structure layer, the thickness h1 of the first polyester film layer is the same as the thickness h2 of the second polyester film layer, and the ratio of the thickness h1 of the first polyester film layer to the thickness h3 of the elastic material film layer is (1:2.6) to (1:3.5).

[0007] For the above-mentioned anti-scratch vehicle film based on the composite pressure structure, the ratio of the thickness h1 of the first polyester film layer to the thickness h3 of the elastic material film layer is (1:2.9) to (1:3.3).

[0008] In the above-mentioned anti-scratch vehicle film based on the composite pressure structure, two layers of the composite pressure structure layers are arranged between the wear-resistant layer and the base film layer, and a reinforcing film layer is arranged between the two layers of the composite pressure structure layers.

[0009] The above-mentioned anti-scratch car film based on the composite pressure structure, the wear-resistant layer at least includes a first wear-resistant film layer and a second wear-resistant film layer, the first wear-resistant film layer is located above the second wear-resistant film layer, and the thickness H1 of the first wear-resistant film layer is less than or equal to the thickness H2 of the second wear-resistant film layer.

[0010] For the above-mentioned anti-scratch vehicle film based on the composite pressure structure, the ratio of the thickness H1 of the first wear-resistant film layer to the thickness H2 of the second wear-resistant film layer is (1:1) to (1:1.4).

[0011] For the above-mentioned anti-scratch vehicle film based on the composite pressure structure, the ratio of the thickness H1 of the first wear-resistant film layer to the thickness H2 of the second wear-resistant film layer is (1:1.1) to (1:1.25).

[0012] The technical solution of the utility model has achieved the following beneficial technical effects:

[0013] 1. The composite structure layer in the utility model is first pressed once, that is, the first polyester film layer, the elastic material film layer and the second polyester film layer are pressed first, and then the base film layer, the composite structure layer and the wear-resistant layer are pressed, so that the first polyester film layer, the elastic material film layer and the second polyester film layer are pressed at least twice, forming repeated pressing to form a composite structure layer, which can eliminate the adhesion phenomenon in the existing elastic material to a certain extent, especially hot pressing.

[0014] 2. The utility model adds a reinforcing film layer between the two laminated structural layers, which can improve the tear resistance of the vehicle film and prevent sharp objects (such as blades, thumbtacks, and tacks) from piercing the first laminated structural layer and then easily piercing the base film layer, while preventing sharp objects such as blades from forming long scratches on the vehicle film. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of the anti-scratch vehicle film based on the composite pressure structure of the utility model;

[0016] Figure 2 A schematic structural diagram of the wear-resistant layer of the anti-scratch vehicle film based on the composite pressure structure of the utility model.

[0017] The reference numerals in the figure are represented as follows: 1-wear-resistant layer, 1-1-first wear-resistant film layer, 1-2-second wear-resistant film layer, 1-3-third wear-resistant film layer, 1-4-fourth wear-resistant film layer; 2-first composite structure layer, 2-1-first polyester film layer, 2-2-elastic material film layer, 2-3-second polyester film layer; 3-reinforcement film layer; 4-second composite structure layer; 5-base film layer; 6-adhesive layer; 7-release paper layer. DETAILED DESCRIPTION

[0018] like Figure 1 As shown, the anti-scratch vehicle film based on the composite pressure structure includes a release paper layer 7, an adhesive layer 6, a base film layer 5, a composite pressure structure layer and a wear-resistant layer 1. The wear-resistant layer 1, the composite pressure structure layer and the base film layer 5 are stacked together from top to bottom and pressed into a vehicle film substrate. The adhesive layer 6 is respectively bonded to the base film layer 5 and the release paper layer 7; the composite pressure structure layer includes a first polyester film layer 2-1, an elastic material film layer 2-2 and a second polyester film layer 2-3. The first polyester film layer 2-1 and the second polyester film layer 2-3 are arranged on both sides of the elastic material film layer 2-2 and pressed into a composite pressure structure layer. Among them, the wear-resistant layer 1 and the base film layer 5 are both made of wear-resistant TPU elastic material with a hardness between 65 and 75A, the elastic material film layer 2-2 is made of TPU elastic material with a hardness between 20-40A, and the adhesive layer 6 is made of acrylic adhesive.

[0019] In the composite structure layer, the thickness h1 of the first polyester film layer 2-1 is the same as the thickness h2 of the second polyester film layer 2-3, and the ratio of the thickness h1 of the first polyester film layer 2-1 to the thickness h3 of the elastic material film layer 2-2 is (1:2.6) to (1:3.5). Preferably, the ratio of the thickness h1 of the first polyester film layer 2-1 to the thickness h3 of the elastic material film layer 2-2 is (1:2.9) to (1:3.3). More preferably, the ratio of the thickness h1 of the first polyester film layer 2-1 to the thickness h3 of the elastic material film layer 2-2 is (1:3) to (1:3.1).

[0020] In order to prevent a sharp blade from piercing the laminated structure layer and then cutting into the base film layer 5, in this embodiment, two laminated structure layers are provided between the wear-resistant layer 1 and the base film layer 5, and a reinforcement film layer 3 is provided between the two laminated structure layers, wherein the reinforcement film layer 3 is made of a biaxially oriented polyethylene film, and the reinforcement film layer 3 and the two laminated structure layers are used to protect the base film layer 5, so as to prevent a sharp blade from easily forming a long scratch on the vehicle film. In this embodiment, the laminated structure layer located above the reinforcement film layer 3 is named the first laminated structure layer 2, and the laminated structure layer located below the reinforcement film layer 3 is named the second laminated structure layer 4.

[0021] In this embodiment, Figure 2 As shown, the wear-resistant layer 1 includes a first wear-resistant film layer 1-1, a second wear-resistant film layer 1-2, a third wear-resistant film layer 1-3 and a fourth wear-resistant film layer 1-4, the first wear-resistant film layer 1-1 is located above the second wear-resistant film layer 1-2, the second wear-resistant film layer 1-2 is located above the third wear-resistant film layer 1-3, the third wear-resistant film layer 1-3 is located above the fourth wear-resistant film layer 1-4, and the size relationship among the thickness H1 of the first wear-resistant film layer 1-1, the thickness H2 of the second wear-resistant film layer 1-2, the thickness H3 of the third wear-resistant film layer 1-3 and the thickness H4 of the fourth wear-resistant film layer 1-4 is H1≤H2≤H3≤H4, preferably, H1:H2:H3:H4=1:(1.1~1.2):(1.23~1.28):(1.33~1.35).

[0022] When manufacturing the utility model, the wear-resistant layer 1 and the composite structure layer are first manufactured by hot pressing, and then the base film layer 5, the second composite structure layer 4, the reinforcement film layer 3, the first composite structure layer 2 and the wear-resistant layer 1 are pressed by first hot pressing and then static pressing, and then the acrylic adhesive is coated on the surface of the base film layer 5 to form the bonding layer 6, and then the release paper layer 7 is covered on the bonding layer 6. Among them, the wear-resistant layer 1, the first composite structure layer 2 and the second composite structure layer 4 in the finished vehicle film are all film layer structures that have undergone at least two times of lamination, and their purpose is: multiple wear-resistant film layers are laminated into a wear-resistant layer 1 through lamination, which can prevent shallow scratches from diffusing into the interior of the vehicle film under the action of external force, and two polyester film layers and one elastic material film layer 2-2 are laminated into a composite structure layer through lamination, which can increase the amount of hydrogen bonds between the molecular chains inside the elastic material film layer 2-2 to a certain extent, that is, through hot lamination, a certain amount of hydrogen bonding force is added between the molecular chains inside the elastic material film layer 2-2, thereby improving the elastic strength of the elastic material film layer 2-2.

[0023] When using the utility model, cover the part of the car body that needs to be filmed with the utility model, then flatten it, then tear off the release paper layer 7, then adjust the car film so that the car film fits tightly to the car body, and then use a hot air blower to blow hot air to the car body so that the adhesive layer 6 is heated and melted and tightly adhered to the car body.

[0024] When the utility model is applied to the surface of an object for a scratch simulation test, it is found that hard particles will not leave scratches on the surface of the car film, and the scratches of the utility knife are limited to the film layer that is scratched, and the unscratched film layer will not be affected by the tearing effect of the utility knife during the sliding process, that is, the unscratched film layer will not have tearing cracks. Compared with existing car films, the dents formed by long-term extrusion on the utility model are easier to eliminate, and it is less likely to be scratched by the extrusion and sliding of hard objects.

[0025] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. An anti-scratch car film based on a composite pressure structure, characterized in that: The vehicle film substrate comprises a release paper layer (7), an adhesive layer (6), a base film layer (5), a laminated structure layer and a wear-resistant layer (1); the wear-resistant layer (1), the laminated structure layer and the base film layer (5) are stacked together in sequence from top to bottom and pressed into a vehicle film substrate; the adhesive layer (6) is respectively bonded to the base film layer (5) and the release paper layer (7); the laminated structure layer comprises a first polyester film layer (2-1), an elastic material film layer (2-2) and a second polyester film layer (2-3); the first polyester film layer (2-1) and the second polyester film layer (2-3) are arranged on both sides of the elastic material film layer (2-2) and pressed into a laminated structure layer.

2. The anti-scratch vehicle film based on the composite pressure structure according to claim 1, characterized in that: In the composite structure layer, the thickness h1 of the first polyester film layer (2-1) is the same as the thickness h2 of the second polyester film layer (2-3), and the ratio of the thickness h1 of the first polyester film layer (2-1) to the thickness h3 of the elastic material film layer (2-2) is (1:2.6) to (1:3.5).

3. The anti-scratch vehicle film based on the composite pressure structure according to claim 2 is characterized in that: The ratio of the thickness h1 of the first polyester film layer (2-1) to the thickness h3 of the elastic material film layer (2-2) is (1:2.9) to (1:3.3).

4. The anti-scratch vehicle film based on the composite pressure structure according to claim 2, characterized in that: Two layers of the composite structure layers are provided between the wear-resistant layer (1) and the base film layer (5), and a reinforcing film layer (3) is provided between the two layers of the composite structure layers.

5. The anti-scratch vehicle film based on the composite pressure structure according to any one of claims 1 to 4, characterized in that: The wear-resistant layer (1) comprises at least a first wear-resistant film layer (1-1) and a second wear-resistant film layer (1-2), wherein the first wear-resistant film layer (1-1) is located above the second wear-resistant film layer (1-2), and a thickness H1 of the first wear-resistant film layer (1-1) is less than or equal to a thickness H2 of the second wear-resistant film layer (1-2).

6. The anti-scratch vehicle film based on the composite pressure structure according to claim 5, characterized in that: The ratio of the thickness H1 of the first wear-resistant film layer (1-1) to the thickness H2 of the second wear-resistant film layer (1-2) is (1:1) to (1:1.4).

7. The anti-scratch vehicle film based on the composite pressure structure according to claim 6, characterized in that: The ratio of the thickness H1 of the first wear-resistant film layer (1-1) to the thickness H2 of the second wear-resistant film layer (1-2) is (1:1.1) to (1:1.25).

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