Hydrophilic anti-fog film for motor vehicle

Abstract

The hydrophilic anti-fog film comprises a bonding layer, a base layer, a heat insulation layer, a reflecting layer, a wear-resistant layer and an anti-fog layer which are sequentially stacked in the designated direction, and the edge portion of any one of the heat insulation layer, the reflecting layer, the wear-resistant layer and the anti-fog layer is connected with the bonding layer in a surrounding and sealing mode. And therefore, a multi-sealing shell layer structure is formed on the base layer. The wear-resistant layer is matched with the anti-fogging layer, so that the anti-fogging fabric has good hydrophilic and anti-fogging properties and also has good scratch resistance and wear resistance, the overall service life is prolonged, infrared rays can be reflected and visible light can be allowed to pass through by arranging the heat-insulating layer and the reflecting layer, heat absorption is reduced, and the service life of the anti-fogging fabric is prolonged. According to the film, part of infrared rays and ultraviolet rays can be blocked, the good visible light transmittance is kept, meanwhile, the two opposite angles of the upper end face of the film body are subjected to chamfering treatment, and the situation that the edges are scratched and curled in the using process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of vehicle supplies, and in particular to a hydrophilic anti-fog film for motor vehicles. Background Technology

[0002] When there is a temperature difference between the two sides of a glass, water vapor accumulates on one side of the glass. This water vapor forms fog in the form of tiny water droplets. The fog on the glass surface significantly reduces the light transmittance of the glass. For example, when fog forms on a car window, it poses a serious threat to driving safety. Anti-fog materials can effectively solve this problem. Hydrophilic anti-fog film is a special type of film that can prevent the formation of fog through its hydrophilic properties. It is widely used in eyeglasses, car rearview mirrors, bathroom mirrors, window glass, protective masks, and other applications.

[0003] Existing anti-fog films are typically applied by peeling off the base film, placing water droplets on the item, attaching the anti-fog film, and then scraping away the water with a squeegee. This effectively isolates the water from the item and prevents fogging from obstructing vision. However, this method is prone to curling at the edges when the anti-fog film is scratched during prolonged use, reducing its overall lifespan. Furthermore, existing protective films are easily scratched during use, resulting in poor protection. Additionally, the heat insulation properties of existing protective films still need improvement. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hydrophilic anti-fog film for motor vehicles. By combining a wear-resistant layer with an anti-fog layer, it achieves excellent hydrophilicity and anti-fog properties while also providing good scratch and wear resistance, thereby extending its overall service life. The inclusion of a heat-insulating layer and a reflective layer reflects infrared rays while allowing visible light to pass through, reducing heat absorption and improving energy efficiency. It blocks some infrared and ultraviolet rays while maintaining good visible light transmittance. Furthermore, the two diagonal corners of the upper surface of the film are chamfered to prevent edge abrasion and curling during use, improving overall adhesion and bonding.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] Some embodiments of this utility model provide a hydrophilic anti-fog film for motor vehicles, comprising an adhesive layer, a base layer, a heat insulation layer, a reflective layer, an abrasion-resistant layer, and an anti-fog layer stacked sequentially in a specified direction. The edges of any one of the heat insulation layer, reflective layer, abrasion-resistant layer, and anti-fog layer are sealed and connected to the adhesive layer, thereby forming a multi-layered sealed shell structure on the base layer. By combining the abrasion-resistant layer and the anti-fog layer, good hydrophilicity and anti-fog properties are achieved while also providing excellent scratch and abrasion resistance, thus improving the overall service life. The heat insulation layer and reflective layer reflect infrared rays while allowing visible light to pass through, reducing heat absorption and improving energy efficiency. The film blocks some infrared and ultraviolet rays while maintaining good visible light transmittance. Furthermore, the two diagonal corners of the upper surface of the film are chamfered to prevent edge abrasion and curling during use, improving overall adhesion and bonding.

[0007] In one embodiment, the base layer comprises a polyester layer with a thickness of 50 to 300 micrometers, which has good heat resistance and weather resistance, can withstand high temperature and ultraviolet radiation, and is not prone to aging.

[0008] In one embodiment, the heat insulation layer comprises a polyethylene terephthalate layer with a thickness of 30 to 150 micrometers, which can block some infrared and ultraviolet rays while maintaining good visible light transmittance.

[0009] In one embodiment, the reflective layer comprises a low-emissivity coating with a multilayer structure, the low-emissivity coating comprising sequentially stacked metal layers, metal oxide layers, and a protective layer. The reflective layer is primarily composed of multiple layers of metal or metal oxide, capable of reflecting infrared radiation while allowing visible light to pass through, thereby reducing heat absorption and improving energy efficiency.

[0010] Preferably, the thickness of the low-emissivity coating is 15-100 micrometers, wherein the thickness ratio of the metal layer, the metal oxide layer, and the protective layer is 1:0.5-2:3-10.

[0011] In one embodiment, the wear-resistant layer comprises a polycarbonate layer with a thickness of 50 to 200 micrometers, which has excellent transparency and impact resistance, and can effectively reduce the damage to the body caused by scratches.

[0012] In one embodiment, the antifog layer includes a siloxane layer with a thickness of 1 to 30 micrometers, which has good hydrophilicity. By introducing hydrophilic groups, a hydrophilic antifog film can be prepared.

[0013] In one embodiment, the adhesive layer comprises a thickness of 20 to 250 micrometers, which has good biocompatibility and transparency, and can prevent the formation of air bubbles during the bonding process.

[0014] In one embodiment, the hydrophilic anti-fog film has chamfered edges at both opposite corners on its upper surface to prevent the edges from being scratched and curling during use, thereby improving the overall adhesion and bonding effect.

[0015] In one embodiment, the hydrophilic anti-fog film is applied to the headlights, windows, or rearview mirrors of a motor vehicle to ensure that the vehicle can drive normally in rainy or sunny weather.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In this invention, by combining a wear-resistant layer and an anti-fog layer, it not only has good hydrophilic and anti-fog properties, but also provides excellent scratch resistance and wear resistance, thereby improving the overall service life.

[0018] In this invention, by setting a heat insulation layer and a reflective layer, infrared rays can be reflected while visible light can pass through, thereby reducing heat absorption and improving energy efficiency. It can block some infrared and ultraviolet rays while maintaining good visible light transmittance.

[0019] In this invention, the two opposite corners of the upper surface of the hydrophilic anti-fog film are beveled to prevent the edges from being scratched and curling during use, thereby improving the overall adhesion and bonding effect. Attached Figure Description

[0020] Figure 1 An isometric view of a hydrophilic anti-fog film for motor vehicles according to an embodiment of this utility model;

[0021] Figure 2 This is a front view of a hydrophilic anti-fog film for motor vehicles according to an embodiment of the present invention;

[0022] Figure 3 This is a top view of a hydrophilic anti-fog film for motor vehicles according to an embodiment of the present invention;

[0023] Figure 4 This is a front sectional view of a hydrophilic anti-fog film for motor vehicles according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 1. Membrane body; 101. Anti-fog layer; 102. Wear-resistant layer; 103. Reflective layer; 104. Heat insulation layer; 105. Base layer; 106. Adhesive layer. Detailed Implementation

[0025] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1-4 This embodiment provides a hydrophilic anti-fog film 1 for motor vehicles, comprising an adhesive layer 106, a base layer 105, a heat insulation layer 104, a reflective layer 103, a wear-resistant layer 102, and an anti-fog layer 101 stacked sequentially along a specified direction. The edge of any one of the heat insulation layer 104, reflective layer 103, wear-resistant layer 102, and anti-fog layer 101 is sealed and connected to the adhesive layer 106, thereby forming a multi-layered sealing structure on the base layer 105. The specified direction can be from bottom to top, or vice versa.

[0027] The base layer 105 comprises a polyester layer with a thickness of 50-300 micrometers, exhibiting good heat and weather resistance, capable of withstanding high temperatures and ultraviolet radiation, and resistant to aging. The heat insulation layer 104 comprises a polyethylene terephthalate layer with a thickness of 30-150 micrometers, which blocks some infrared and ultraviolet rays while maintaining good visible light transmittance. The reflective layer 103 comprises a low-emissivity coating with a multi-layer structure, consisting of sequentially stacked metal layers, metal oxide layers, and a protective layer. The thickness ratio of the metal layer, metal oxide layer, and protective layer is 1:0.5-2:3-10, and the overall thickness of the low-emissivity coating is 15-100 micrometers. It reflects infrared rays while allowing visible light to pass through, thereby reducing heat absorption and improving energy efficiency. The wear-resistant layer 102 comprises a polycarbonate layer with a thickness of 50-200 micrometers, possessing excellent transparency and impact resistance, effectively reducing damage caused by scratches. The anti-fog layer 101 comprises a siloxane layer with a thickness of 1-30 micrometers. It exhibits good hydrophilicity; by introducing hydrophilic groups, a hydrophilic anti-fog film can be prepared. The adhesive layer 106 includes a polyvinyl alcohol layer with a thickness of 20-250 micrometers. Polyvinyl alcohol is a water-soluble polymer with good biocompatibility and transparency, preventing the formation of air bubbles during adhesion. The hydrophilic anti-fog film 1 has chamfered edges at both opposite corners on its upper surface to prevent edge scraping and curling during use, improving overall adhesion and bonding. The hydrophilic anti-fog film is applied to vehicle headlights, windows, or rearview mirrors.

[0028] The hydrophilic anti-fog film of this embodiment can be applied to the headlights, windows, or rearview mirrors of automobiles and other motor vehicles. By combining the wear-resistant layer 102 with the anti-fog layer 101, it not only has good hydrophilic and anti-fog properties but also provides excellent scratch and wear resistance, thereby improving the overall service life. By setting the heat insulation layer 104 and the reflective layer 103, it can reflect infrared rays while allowing visible light to pass through, thereby reducing heat absorption and improving energy efficiency. It can block some infrared and ultraviolet rays while maintaining good visible light transmittance. At the same time, the two diagonal corners of the upper end face of the film 1 are chamfered to prevent the edges from being scratched and curled during use, thus improving the overall adhesion and bonding effect.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydrophilic anti-fog film for motor vehicles, characterized in that, The structure comprises an adhesive layer (106), a base layer (105), a heat insulation layer (104), a reflective layer (103), a wear-resistant layer (102), and an anti-fog layer (101) stacked sequentially in a specified direction. The edge of any one of the heat insulation layer (104), the reflective layer (103), the wear-resistant layer (102), and the anti-fog layer (101) is sealed and connected to the adhesive layer (106) around it, thereby forming a multi-layer sealed shell structure on the base layer (105).

2. The hydrophilic anti-fog film for motor vehicles according to claim 1, characterized in that: The base layer (105) includes a polyester layer with a thickness of 50 to 300 micrometers.

3. The hydrophilic anti-fog film for motor vehicles according to claim 1, characterized in that: The heat insulation layer (104) includes a polyethylene terephthalate layer with a thickness of 30 to 150 micrometers.

4. The hydrophilic anti-fog film for motor vehicles according to claim 1, characterized in that: The reflective layer (103) includes a low-emissivity coating with a multilayer structure, the low-emissivity coating including a metal layer, a metal oxide layer and a protective layer stacked sequentially along a specified direction.

5. A hydrophilic anti-fog film for motor vehicles according to claim 4, characterized in that: The thickness of the low-emissivity coating is 15-100 micrometers, wherein the thickness ratio of the metal layer, the metal oxide layer and the protective layer is 1:0.5-2:3-10.

6. A hydrophilic anti-fog film for motor vehicles according to claim 1, characterized in that: The wear-resistant layer (102) includes a polycarbonate layer with a thickness of 50 to 200 micrometers.

7. A hydrophilic anti-fog film for motor vehicles according to claim 1, characterized in that: The anti-fog layer (101) includes a siloxane layer with a thickness of 1 to 30 micrometers.

8. A hydrophilic anti-fog film for motor vehicles according to claim 1, characterized in that: The adhesive layer (106) includes a polyvinyl alcohol layer with a thickness of 20 to 250 micrometers.

9. A hydrophilic anti-fog film for motor vehicles according to claim 1, characterized in that: The hydrophilic anti-fog membrane has chamfered structures at both opposite corners of its upper surface.

10. A hydrophilic anti-fog film for motor vehicles according to claim 1, characterized in that: The hydrophilic anti-fog film is applied to the headlights, windows, or rearview mirrors of motor vehicles.

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