A micro-prismatic reflective film

Abstract

The present invention relates to a micro-prismatic reflective film, which comprises a protective layer, a prism layer, a support layer and a base layer in sequence, an air layer is arranged between the prism layer and the support layer, a reflective layer is plated on one side of the support layer adjacent to the air layer, a plurality of linear convex ridges are arranged on the surface of the protective layer, the linear convex ridges are arranged at equal intervals, a hydrophobic layer is coated on the surface of the protective layer between the linear convex ridges, and the hydrophobic layer is a polytetrafluoroethylene coating; a plurality of condensers are arranged in the protective layer, the cross section of the condensers is semicircular, and the plane of the condensers is flush with the bottom surface of the protective layer. The surface of the protective layer of the present application is coated with a hydrophobic layer, which can quickly guide fine water droplets such as dew and frost to condense on the surface of the film, and quickly condense into large water droplets and flow down from the surface of the reflective film; the linear convex ridges protect the surface of the reflective film from being scratched during use, thereby extending the service life of the reflective film, keeping the surface smooth and scratch-free, and maintaining a high-intensity reflective effect.

Description

Technical Field

[0001] The invention relates to the technical field of reflective films, in particular to a micro-prism reflective film. Background Art

[0002] Reflective materials with micro-prism array structures are increasingly being used in various road traffic safety facilities, signboards, and vehicle passive safety protection devices due to their excellent retro-reflective properties. The so-called micro-prism array structure refers to a structure consisting of three mutually perpendicular planes, which can perform total internal reflection on the incident light from the front surface, thereby greatly improving the reflection efficiency of the incident light.

[0003] The outer surface of the reflective film is exposed to the outside world. Due to the lack of anti-scratch design, the outer surface is easily scratched during storage, transportation or use. Scratches are left on the smooth surface, which makes it easy for tiny water droplets to hang on the wall or dirt to accumulate on the outer surface, causing the incident light to undergo optical effects such as refraction and absorption, thereby reducing or changing the path of the incident light, absorbing the outgoing light or reflected light of the incident light, reducing the incident light reaching the reflective layer, and seriously weakening the reflective effect of the reflective film. In view of this, this case was brought about. Summary of the invention

[0004] The present invention provides a micro-prismatic reflective film, which solves the problem that the surface of the existing reflective film is easily scratched, causing water drops or dirt to hang on the wall surface, thus affecting the effect of the reflective film.

[0005] The present invention adopts the following technical solution:

[0006] A micro-prismatic reflective film comprises a protective layer, a prism layer, a support layer and a base layer in sequence, an air layer is arranged between the prism layer and the support layer, a reflective layer is plated on the side of the support layer adjacent to the air layer, a plurality of linear convex ridges are arranged on the surface of the protective layer, the linear convex ridges are arranged at equal intervals, a hydrophobic layer is coated on the surface of the protective layer between the linear convex ridges, and the hydrophobic layer is a polytetrafluoroethylene coating; a plurality of condensers are arranged in the protective layer, the cross section of the condensers is semicircular, and the plane of the condensers is flush with the bottom surface of the protective layer.

[0007] According to a further improvement, the linear convex corrugations are made of fluorinated polyurethane acrylate.

[0008] As a further improvement, the thickness of the hydrophobic layer is 100-300 μm, and preferably the thickness of the hydrophobic layer is 100 μm.

[0009] In a further improvement, the reflective layer is a metal silver-plated layer or a metal aluminum-plated layer.

[0010] As a further improvement, the base layer is composed of an adhesive layer and a release layer, and the adhesive layer is bonded to the side of the support layer away from the reflective layer.

[0011] In a further improvement, the prism layer is made of a photocurable resin material, and the photocurable resin is one of epoxy acrylate, polyurethane acrylate, polyester acrylate and polyether acrylate.

[0012] In a further improvement, the protective layer is made of PVC film material.

[0013] From the above description of the structure of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages:

[0014] 1. A condenser is arranged in the protective layer of the present application, which can retroreflect the incident light perpendicular to the reflective film surface, and can also retroreflect the incident light of multiple non-perpendicular film surfaces. The reflective film can realize retroreflection at night or in a weak light environment. The driver can see the traffic signs from multiple angles, which brings safer protection to people's travel.

[0015] 2. The surface of the protective layer of the present application is coated with a hydrophobic layer, which can quickly guide fine water droplets such as dew and frost to condense on the surface of the film, and quickly condense into large water droplets and flow down from the surface of the reflective film, while taking away dust and dirt, eliminating the adverse effects of fine water droplets on the reflective film.

[0016] 3. The surface of the hydrophobic layer of the present application is provided with linear convex ridges, which protect the surface of the reflective film from being scratched during use, extend the service life of the reflective film, keep the surface smooth and scratch-free, and prevent dust and dirt from adhering to it, thereby avoiding dust and dirt from reducing or changing the path of the incident light, so that the reflective film maintains a high-intensity reflective effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the reflective film of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the reflective film of the present invention for retroreflection at night. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0020] Reference Figure 1 , Figure 2A microprismatic reflective film comprises a protective layer 1, a prism layer 2, a support layer 3 and a base layer 4 in sequence, an air layer 20 is arranged between the prism layer 2 and the support layer 3, a reflective layer 31 is plated on the side of the support layer 3 adjacent to the air layer 20, a plurality of linear convex ridges 51 are arranged on the surface of the protective layer 1, and all the linear convex ridges 51 are arranged in sequence at equal intervals, the linear convex ridges 51 protect the surface of the reflective film from being scratched during use, extend the service life of the reflective film, keep the surface smooth and scratch-free, and not easy to adhere to dust and dirt, so as to avoid dust and dirt from reducing or changing the path of incident light, so that the reflective film maintains a high-intensity reflective effect. The surface of the protective layer 1 between the linear convex ribs 51 and the linear convex ribs 51 is coated with a hydrophobic layer 5, and the hydrophobic layer 5 is a polytetrafluoroethylene coating; the hydrophobic layer 5 can quickly guide fine water droplets such as dew and frost to condense on the surface of the film, and quickly condense into large water droplets and flow down from the surface of the reflective film, while taking away dust and dirt, eliminating the adverse effects of fine water droplets on the reflective film. A plurality of condensers 11 are arranged in the above-mentioned protective layer 1, and the cross-section of the condenser 11 is semicircular, and the plane of the condenser 11 is flush with the bottom surface of the protective layer 1. The condenser 11 can both retro-reflect the incident light perpendicular to the reflective film surface and retro-reflect the incident light of multiple non-perpendicular film surfaces. The reflective film can achieve retro-reflection at night or in a weak light environment, and the driver can see the traffic signs from multiple angles, bringing safer protection to people's travel.

[0021] The linear convex ridges 51 are made of fluorinated polyurethane acrylate.

[0022] The thickness of the hydrophobic layer 5 is 100-300 μm, and preferably the thickness of the hydrophobic layer 5 is 100 μm.

[0023] The reflective layer 31 is a metal silver-plated layer or a metal aluminum-plated layer, and preferably the reflective layer 31 is a metal silver-plated layer.

[0024] Continue to refer to Figure 1 The base layer 4 is composed of an adhesive layer 41 and a release layer 42 , and the adhesive layer 41 is bonded to the side of the support layer 3 away from the reflective layer 31 .

[0025] The prism layer 2 is made of a photocurable resin material, and the photocurable resin is one of epoxy acrylate, polyurethane acrylate, polyester acrylate and polyether acrylate. Preferably, the photocurable resin is polyurethane acrylate.

[0026] The protective layer 1 is made of PVC film material.

[0027] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A microprismatic reflective film, comprising a protective layer, a prism layer, a support layer and a base layer in sequence, an air layer is provided between the prism layer and the support layer, and a reflective layer is plated on one side of the support layer adjacent to the air layer, characterized in that: The surface of the protective layer is provided with a plurality of linear ridges, which are arranged at equal intervals, and the surface of the protective layer between the linear ridges is coated with a hydrophobic layer, which is a polytetrafluoroethylene coating; a plurality of condensers are arranged in the protective layer, and the cross-section of the condenser is semicircular, and the plane of the condenser is flush with the bottom surface of the protective layer.

2. The microprismatic reflective film according to claim 1, characterized in that: The linear convex corrugations are made of fluorinated polyurethane acrylate.

3. The microprismatic reflective film according to claim 1, characterized in that: The thickness of the hydrophobic layer is 100-300 μm.

4. The microprismatic reflective film according to claim 1, characterized in that: The reflective layer is a metal silver-plated layer or a metal aluminum-plated layer.

5. The microprismatic reflective film according to claim 1, characterized in that: The base layer is composed of an adhesive layer and a release layer, and the adhesive layer is bonded to the side of the support layer away from the reflective layer.

6. The microprismatic reflective film according to claim 1, characterized in that: The prism layer is made of a photocurable resin material, and the photocurable resin is one of epoxy acrylate, polyurethane acrylate, polyester acrylate and polyether acrylate.

7. The microprismatic reflective film according to claim 1, characterized in that: The protective layer is made of PVC film material.

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