Scratch-resistant self-repairing paint surface protective film
By adopting a transparent mesh layer and an independent hydrogel film structure in the protective film, the problem of the existing self-healing protective film reducing the surface tension after scratches is solved, and the effect of anti-scratch self-repair is achieved.
Patent Information
- Application Number
- CN202421533142.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-01
AI Technical Summary
After scratches, the existing self-repair protective film causes the film surface tension to be reduced in the area around the scratches, which in turn affects the self-repair ability of subsequent scratches.
A transparent grid layer and an independent hydrogel film structure are adopted. The transparent grid layer is laid on the surface of the film base layer, the hydrogel film is arranged in the grid, and the hydrogel films in the adjacent grid are independent of each other.
After scratches occur on the protective film surface, the hydrogel film in the scratched area will not affect the hydrogel film in the surrounding grid, avoiding the reduction of the film surface tension in the area around the scratches, thereby maintaining the self-healing ability.
Smart Images
Figure CN222834243U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile protective films, in particular to an anti-scratch self-repairing paint surface protective film. Background Art
[0002] There are two main types of car paint protection films: one is to avoid scratches by increasing the hardness of the film surface, but the harder the film is, the more difficult it is to fit with the complex curved surface of the car body; the other is a self-healing protective film with a soft texture and easy to fit, which can automatically repair scratches when scratches appear on the film surface.
[0003] The self-healing protective film mainly uses hydrogel film, which is an ultra-thin liquid polymer material with a certain fluidity. When applied to the surface of an object, the hydrogel film will form a protective film through surface tension and form a layer of tiny protrusions on the surface. When the surface of the hydrogel film is scratched or slightly damaged, the surface tension will cause trivial particles to move to the damaged area and fill the damaged area, thereby protecting the surface. If the surface damage is large, the liquid in the damaged area will be converted into solid to fill the damaged area. The hydrogel film contains silica. Once solidified, the physical and chemical properties of the hydrogel film will undergo fundamental changes, and the surface will become harder and more wear-resistant.
[0004] The hydrogel film has a defect, that is, when a scratch occurs somewhere, the surface tension squeezes the tiny particles to the damaged area to repair the scratch. Then the surface tension in a large area around the scratch will decrease, and the closer to the scratch, the more the surface tension decreases. As a result, the next time a scratch occurs in the area, the surface tension is not enough to repair the scratch. Moreover, the closer a new scratch is to the last scratch, the more difficult it is to self-repair. Utility Model Content
[0005] The utility model aims to overcome the defects in the prior art and provide a scratch-resistant self-repairing paint protection film which will not reduce the surface tension of the film in the area around the scratch after the scratch occurs.
[0006] In order to achieve the above-mentioned technical effects, the technical solution of the utility model is: a scratch-resistant self-repairing paint protective film, comprising a film base layer and a film surface layer, a release film layer is arranged on one side of the film base layer, and the film surface layer is arranged on the other opposite side; the film surface layer comprises a transparent grid layer and a hydrogel film, the transparent grid layer is laid on the surface of the film base layer, the hydrogel film is arranged in each grid of the transparent grid layer, and the hydrogel films in adjacent grids are independent of each other.
[0007] Optionally, the hydrogel film is flush with the surface at the connection with the transparent grid layer.
[0008] Optionally, the grids of the transparent grid layer are in the shape of regular polygons or circles.
[0009] Optionally, the grid border thickness of the transparent grid layer is less than or equal to 0.5 mm, and the circumscribed circle diameter of the grid is less than or equal to 10 mm.
[0010] Optionally, a disposable protective film layer is attached to the side of the film surface layer facing away from the film base layer, and the disposable protective film layer covers the transparent grid layer and the hydrogel film, and the disposable protective film layer is seamlessly bonded to the outer surface of the transparent grid layer, and the disposable protective film layer is seamlessly bonded to the outer surface of the hydrogel film.
[0011] Optionally, the membrane base layer includes an inorganic aluminum oxide coating, an epoxy resin layer, an anti-oxidation layer, a TPU film layer and a thermal insulation layer, the inorganic aluminum oxide coating is located on the surface of the membrane base layer, the transparent grid layer is laid on the inorganic aluminum oxide coating, the epoxy resin layer is arranged on the lower surface of the inorganic aluminum oxide coating, the anti-oxidation layer is arranged on the lower surface of the epoxy resin layer, the TPU film layer is arranged on the lower surface of the anti-oxidation layer, and the thermal insulation layer is arranged on the lower surface of the TPU film layer.
[0012] Optionally, the heat insulation layer includes a stacked aluminized film, an aluminized polyester film and an aluminized polyimide film.
[0013] Optionally, a fireproof layer is provided on the lower surface of the heat insulation layer, and a polyethylene fiber layer is provided on the lower surface of the fireproof layer.
[0014] In summary, compared with the prior art, the scratch-resistant self-repairing paint protective film proposed by the utility model has a unique structure. Since the hydrogel films in adjacent grids of the transparent grid layer are independent of each other, the hydrogel films with scratches in the grids will not affect the hydrogel films in the surrounding grids. Therefore, scratches on the surface of the protective film will not lead to a decrease in the surface tension of the film in the area around the scratches. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Schematic diagram of the layer structure of the anti-scratch self-repairing paint protective film in the first embodiment;
[0016] Figure 2 is a schematic diagram of the layer structure of the membrane base layer in the first embodiment;
[0017] Figure 3 is a top view of the membrane surface layer in the first embodiment;
[0018] Figure 4 Schematic diagram of the layer structure of the membrane base layer in the second embodiment.
[0019] In the figure:
[0020] 1. Membrane surface layer; 11. Transparent mesh layer; 12. Hydrogel film;
[0021] 2. Membrane base layer; 21. Inorganic aluminum oxide coating; 22. Epoxy resin layer; 23. Anti-oxidation layer; 24. TPU film layer; 25. Heat insulation layer; 26. Fireproof layer; 27. Polyethylene fiber layer; 3. Release film layer; 4. Disposable protective film layer. DETAILED DESCRIPTION
[0022] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of the embodiments. Based on the description of 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.
[0023] Unless otherwise clearly specified and limited, the terms "disposed", "installed", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0024] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.
[0025] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.
[0026] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.
[0027] First embodiment
[0028] Please refer to Figure 1In the embodiment of the utility model, a scratch-resistant self-repairing paint protection film is provided, comprising a film base layer 2, a film surface layer 1, a release film layer 3 and a disposable protection film layer 4, wherein the film surface layer 1 and the release film layer 3 are respectively located on opposite sides of the film base layer 2, and the disposable protection film layer 4 is arranged on the side of the film surface layer 1 facing away from the film base layer 2, the release film layer 3 is used to be attached to the surface of the automobile shell, the film surface layer 1 is used to protect the film base layer 2, and the disposable protection film layer 4 is used to protect the film surface layer 1. When the disposable protection film layer 4 is scratched, the user can choose to peel off the disposable protection film layer 4 to make the scratch-resistant self-repairing paint protection film look brand new, and at this time, the film surface layer 1 performs a protective function.
[0029] Please refer to Figure 2 The membrane base layer 2 is composed of an inorganic aluminum oxide coating 21, an epoxy resin layer 22, an anti-oxidation layer 23, a TPU membrane layer 24 and a thermal insulation layer 25 which are distributed in sequence from top to bottom. The downward direction is set to point to the surface of the automobile shell, that is, the inorganic aluminum oxide coating 21 is located on the surface of the membrane base layer 2; the thermal insulation layer 25 is composed of a stack of multiple layers of aluminum-plated films, aluminum-plated polyester films and aluminum-plated polyimide films. The inorganic aluminum oxide coating 21 is a super hydrophobic coating, and the epoxy resin layer 22 is bonded to the lower surface of the inorganic aluminum oxide coating 21 and the anti-oxidation layer 23; the TPU film layer 24 is arranged on the lower surface of the anti-oxidation layer 23, and the thickness of the TPU film layer 24 is 0.010mm-0.015mm; the thermal insulation layer 25 is bonded to the lower surface of the TPU film layer 24, and the thickness of the thermal insulation layer 25 is 50μm-120μm, and the thermal insulation layer 25 improves the thermal insulation performance of the protective film; the above-mentioned release film layer 3 is bonded to the lower surface of the thermal insulation layer 25, and the release film layer 3 is made of PE release film material.
[0030] Please refer to Figure 3 The film surface layer 1 is composed of a transparent mesh layer 11 and a hydrogel film 12, wherein the transparent mesh layer 11 is laid on the outer surface of the inorganic aluminum oxide coating 21 in the film base layer 2, and the disposable protective film layer 4 covers the transparent mesh layer 11 and the hydrogel film 12. The disposable protective film layer 4 and the outer surface of the transparent mesh layer 11, as well as the disposable protective film layer 4 and the outer surface of the hydrogel film 12 are seamlessly bonded. The inner side of the disposable protective film layer 4 and the transparent mesh layer 11 and the hydrogel film 12 are only vacuum-sucked, and are not connected by gluing, so that no glue marks are left on the transparent mesh layer 11 and the hydrogel film 12 after the disposable protective film layer 4 is torn off.
[0031] Please refer to Figure 3The transparent grid layer 11 is formed by printing a transparent resin material onto the outer surface of the inorganic aluminum oxide coating 21 and then curing. The transparent grid layer 11 has a plurality of grids, each of which is bonded with a hydrogel film 12. The hydrogel films 12 in adjacent grids are independent of each other and are not connected, and the edge of the hydrogel film 12 is flush with the surface at the connection with the transparent grid layer 11. The grids of the transparent grid layer 11 are circular, or regular polygons such as regular triangles, regular quadrilaterals, regular pentagons, and regular hexagons; in this embodiment, the grids of the transparent grid layer 11 are preferably regular hexagons. The grid frame thickness of the transparent grid layer 11 is less than or equal to 0.5 mm, and in this embodiment, the grid frame thickness is preferably 0.5 mm; the circumscribed circle diameter of the grid is less than or equal to 10 mm, and in this embodiment, the circumscribed circle diameter of the grid is preferably 10 mm.
[0032] Compared with the prior art, the scratch-resistant self-repairing paint protective film proposed by the utility model has the advantages that the hydrogel films 12 in adjacent grids of the transparent grid layer 11 are independent of each other, and the hydrogel films 12 with scratches in the grids will not affect the hydrogel films 12 in the surrounding grids. Therefore, scratches on the surface of the protective film will not lead to a decrease in the surface tension of the film in the area around the scratches.
[0033] Second embodiment
[0034] Please refer to Figure 4 This embodiment provides another anti-scratch self-repairing paint protective film based on the first embodiment. A fireproof layer 26 and a polyethylene fiber layer 27 are added to the protective film base layer 2, wherein the fireproof layer 26 is arranged on the lower surface of the thermal insulation layer 25, and the polyethylene fiber layer 27 is arranged on the lower surface of the fireproof layer 26.
[0035] The fireproof layer 26 is composed of a two-component material based on polyurethane, and the thickness of the fireproof layer 26 is 30 μm to 80 μm. The fireproof layer 26 is provided to improve the fireproof property of the protective film, thereby improving the protective ability of the protective film.
[0036] The polyethylene fiber layer 27 is made of ultra-high molecular weight polyethylene fiber, which has an explosion-proof function. The thickness of the polyethylene fiber layer 27 is 30 μm to 100 μm. The polyethylene fiber layer 27 can prevent the protective film from bursting when subjected to force, thereby improving the protective ability of the protective film.
[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A scratch-resistant self-repairing paint protective film, characterized in that: The invention comprises a film base layer (2) and a film surface layer (1), wherein a release film layer (3) is arranged on one side of the film base layer (2), and the film surface layer (1) is arranged on the other opposite side; the film surface layer (1) comprises a transparent grid layer (11) and a hydrogel film (12), wherein the transparent grid layer (11) is laid on the surface of the film base layer (2), and the hydrogel film (12) is arranged in each grid of the transparent grid layer (11), and the hydrogel films (12) in adjacent grids are independent of each other.
2. The scratch-resistant self-repairing paint protection film according to claim 1, characterized in that: The surface of the hydrogel film (12) and the transparent grid layer (11) at the connection point is flush.
3. The scratch-resistant self-repairing paint protection film according to claim 2, characterized in that: The grids of the transparent grid layer (11) are in the shape of regular polygons or circles.
4. The scratch-resistant self-repairing paint protection film according to claim 3, characterized in that: The grid frame thickness of the transparent grid layer (11) is less than or equal to 0.5 mm, and the diameter of the circumscribed circle of the grid is less than or equal to 10 mm.
5. The scratch-resistant self-repairing paint protection film according to claim 2, characterized in that: A disposable protective film layer (4) is attached to the side of the film surface layer (1) facing away from the film base layer (2); the disposable protective film layer (4) covers the transparent mesh layer (11) and the hydrogel film (12); the disposable protective film layer (4) is seamlessly bonded to the outer surface of the transparent mesh layer (11); and the disposable protective film layer (4) is seamlessly bonded to the outer surface of the hydrogel film (12).
6. The scratch resistant self-repairing paint protection film according to any one of claims 1 to 5, characterized in that: The membrane base layer (2) comprises an inorganic aluminum oxide coating (21), an epoxy resin layer (22), an anti-oxidation layer (23), a TPU membrane layer (24) and a heat-insulating layer (25); the inorganic aluminum oxide coating (21) is located on the surface layer of the membrane base layer (2); the transparent mesh layer (11) is laid on the inorganic aluminum oxide coating (21); the epoxy resin layer (22) is arranged on the lower surface of the inorganic aluminum oxide coating (21); the anti-oxidation layer (23) is arranged on the lower surface of the epoxy resin layer (22); the TPU membrane layer (24) is arranged on the lower surface of the anti-oxidation layer (23); and the heat-insulating layer (25) is arranged on the lower surface of the TPU membrane layer (24).
7. The scratch-resistant self-repairing paint protection film according to claim 6, characterized in that: The heat insulation layer (25) comprises a stacked aluminized film, an aluminized polyester film and an aluminized polyimide film.
8. The scratch-resistant self-repairing paint protection film according to claim 6, characterized in that: A fireproof layer (26) is provided on the lower surface of the heat insulation layer (25), and a polyethylene fiber layer (27) is provided on the lower surface of the fireproof layer (26).