Total prism reflective film

Abstract

The utility model relates to a total prism reflective film, which comprises a film body, the film body sequentially comprises a light-transmitting layer, a prism layer, a base layer and an adhesive layer, an air layer is arranged between the prism layer and the base layer, a reflective layer is coated on the upper surface of the base layer, a heat-insulating layer is arranged between the light-transmitting layer and the prism layer, and the heat-insulating layer is a nano aluminum oxide film. The nanometer aluminum oxide film is arranged between the light transmitting layer and the prism layer and has the advantages of high temperature resistance, high light transmission, high heat insulation and the like, when sunlight irradiates the reflective film, the heat insulation layer is formed on the prism layer of the nanometer aluminum oxide film to prevent heat from being conducted to an air layer, and the air layer is prevented from cracking, deforming and losing efficacy under the high-temperature condition for a long time; the reflective effect of the reflective film is ensured, and the service life of the reflective film is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of reflective films, in particular to a full prism reflective film. Background Art

[0002] The full prismatic reflective film contains a number of micro-prismatic structures connected and arranged by micro-crystal cubes. After roller pressing and thermoplasticization, the prism layer and the base layer form a plurality of air layers with regular hexagonal closed cavities tightly arranged. The diffraction phenomenon of light is used to make the incident light form internal full emission. It is widely used in various road and railway guide signs or signboards. When in use, the full prismatic reflective film will be exposed to strong sunlight for a long time, causing the air in the regular hexagonal closed cavity to absorb heat and expand. Since the edge of the closed cavity is roller pressed and thermoplasticized, the structure is relatively unstable. Due to the multiple impacts of air absorption and expansion, the edge is prone to fracture and leakage, resulting in failure of the nearby air layer, resulting in uneven retroreflection of the reflective film, poor reflective effect, and short service life. Summary of the invention

[0003] The utility model provides a full prism reflective film to solve the problems of the existing full prism reflective film being easily damaged by local retroreflection due to long-term exposure to sunlight, poor reflective effect and short service life.

[0004] The utility model adopts the following technical solutions:

[0005] A full prismatic reflective film comprises a film body, which comprises a light-transmitting layer, a prism layer, a base layer and an adhesive layer in sequence, an air layer is arranged between the prism layer and the base layer, the upper surface of the base layer is coated with a light-reflecting layer, and a heat-insulating layer is arranged between the light-transmitting layer and the prism layer, and the heat-insulating layer is a nano-aluminum oxide film.

[0006] Furthermore, the thickness of the heat insulation layer is 5-10 μm, and preferably the thickness of the heat insulation layer is 10 μm.

[0007] Furthermore, the base layer is made of PET material.

[0008] Furthermore, the thickness of the reflective layer is 2-5 μm, and preferably the thickness of the reflective layer is 5 μm.

[0009] Furthermore, the reflective layer is made of metallic silver material.

[0010] Furthermore, the adhesive layer is a self-heat curing adhesive layer, an optical curing adhesive layer or a pressure-sensitive adhesive layer, and preferably the adhesive layer is a pressure-sensitive adhesive layer.

[0011] Furthermore, a release paper is attached to the bottom of the adhesive layer.

[0012] 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: a nano-aluminum oxide film is provided between the light-transmitting layer and the prism layer of the utility model, and the nano-aluminum oxide film has the advantages of high temperature resistance, high light transmittance, high heat insulation, etc. When sunlight irradiates the reflective film, a heat insulation layer is formed on the prism layer of the nano-aluminum oxide film to prevent heat from being conducted to the air layer, thereby preventing the air layer from cracking, deforming and failing under high temperature conditions for a long time, thereby ensuring the reflective effect of the reflective film and extending the service life of the reflective film. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the cross-sectional structure of the full prismatic reflective film of the present utility model.

[0014] Figure 2 The figure is a schematic structural diagram of the full prismatic reflective film of the utility model. DETAILED DESCRIPTION

[0015] The specific implementation of the present utility model is described below with reference to the accompanying drawings.

[0016] Reference Figure 1 , Figure 2 A full prismatic reflective film comprises a film body, which comprises a light-transmitting layer 3, a prism layer 1, a base layer 4 and an adhesive layer 5 in sequence. An air layer 10 is arranged between the prism layer 1 and the base layer 4. The air layer 10 is composed of a plurality of regular hexagonal closed cavities 101 arranged closely. A reflective layer 41 is coated on the upper surface of the base layer 4. A heat-insulating layer 2 is arranged between the light-transmitting layer 3 and the prism layer 1. The heat-insulating layer 2 is a nano-aluminum oxide film.

[0017] Furthermore, the thickness of the heat insulation layer 2 is 5-10 μm, and preferably the thickness of the heat insulation layer 2 is 10 μm.

[0018] Furthermore, the base layer 4 is made of PET material, and the light-transmitting layer 3 is made of PC material.

[0019] Furthermore, the thickness of the reflective layer 41 is 2-5 μm, and preferably the thickness of the reflective layer 41 is 5 μm.

[0020] Furthermore, the reflective layer 41 is made of metallic silver material.

[0021] Furthermore, the adhesive layer 5 is a self-heat curing adhesive layer, an optical curing adhesive layer or a pressure-sensitive adhesive layer, and preferably the adhesive layer 5 is a pressure-sensitive adhesive layer.

[0022] Furthermore, a release paper 51 is attached to the bottom of the adhesive layer 5 .

[0023] A nano-aluminum oxide film is provided between the light-transmitting layer 3 and the prism layer 1 of the utility model. The nano-aluminum oxide film has the advantages of high temperature resistance, high light transmittance, high heat insulation, etc. When sunlight irradiates the reflective film, a heat insulation layer 2 is formed on the nano-aluminum oxide film prism layer 1 to prevent heat from being conducted to the air layer 10, thereby preventing the air layer 10 from cracking, deforming, and failing under high temperature conditions for a long time. The above-mentioned regular hexagonal closed cavity 101 is airtight, thereby ensuring the reflective effect of the reflective film and extending the service life of the reflective film.

[0024] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. A full prismatic reflective film, comprising a film body, which sequentially comprises a light-transmitting layer, a prism layer, a base layer and an adhesive layer, an air layer is provided between the prism layer and the base layer, and a reflective layer is coated on the upper surface of the base layer, characterized in that: A heat insulation layer is arranged between the light-transmitting layer and the prism layer, and the heat insulation layer is a nano aluminum oxide film.

2. The full prismatic reflective film according to claim 1, characterized in that: The thickness of the heat insulation layer is 5-10 μm.

3. The full prismatic reflective film according to claim 1, characterized in that: The base layer is made of PET material.

4. The full prismatic reflective film according to claim 1, characterized in that: The thickness of the reflective layer is 2-5 μm.

5. The full prismatic reflective film according to claim 1, characterized in that: The reflective layer is made of metallic silver material.

6. The full prismatic reflective film according to claim 1, characterized in that: The adhesive layer is a self-heat curing adhesive layer, an optical curing adhesive layer or a pressure-sensitive adhesive layer.

7. The full prismatic reflective film according to claim 1, characterized in that: The bottom of the adhesive layer is adhered with release paper.

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