KR200362663Y1 - Solar Film with Photo-Catalyst Layer - Google Patents

Abstract

The present invention relates to an optical film, and more particularly to an insulating solar film having a photocatalyst layer formed.

That is, in the solar film, the polyester (PET) layer (10); A thermal barrier adhesive layer (20) formed on one side of the polyester layer (10); A silicon (silica) coating layer 40 formed on the other side of the polyester layer 10; The photocatalyst layer 50 formed of a photocatalyst solution on the silicon coating layer 40 is included. The photocatalyst layer 55 is partially penetrated between the empty spaces 45 of the silica coating layer 40 to form a photocatalyst layer. .

Description

Solar Film with Photocatalytic Layer {Solar Film with Photo-Catalyst Layer}

The present invention relates to an optical film, and more particularly, to an insulating solar film having a photocatalyst layer formed thereon.

Among the films, there are particularly bulletproof films, but ordinary optical films include polarizing films, light blocking films, and the like, and the present invention particularly relates to a solar film, that is, a heat insulating film.

In the polarizing film, a technology (Korean Patent Publication No. 1988-0700282) has been developed to compensate for the shortcomings of the internal polarizing film layer that is lacking in durability. A technique for coating films having a sliding coating layer and excellent adhesion, durability and wear resistance (Korean Patent Registration No. 10-0180820) has been disclosed.

In one example of the prior art, the light-shielding substrate film may be a plastic resin film having a thickness of 50-200 micrometers, wherein the plastic resin is selected from polyolefin resin, polyester resin, polyamide resin and the like. In the above technique, in order to make a plastic resin high light-shielding property, it is necessary to mix | blend so that the optical density of a plastic resin film may be 10 or more with black pigments, such as aniline black, before shape | molding into a film.

Solar control film is used for coating materials of facility horticulture and is used for the purpose of high efficiency of cooling and heating in buildings after oil shock. Automotive tinting films are becoming the mainstream, but are shifting to car decoration or privacy protection rather than the unique purpose of light blocking.

In addition, the solar film of PET material is used not only to block light but also to enhance the safety of glass due to the strong physical properties of the PET film as an additional effect. However, the glass window adhesive insulation film used for construction needs a high heat insulation effect and excellent UV protection function.

An example of a special thermal insulation film for glass windows is U.S. Patent No. 3,775,226, which is made by depositing specially processed fine aluminum particles onto a polyester film by a high precision vacuum computer.

On the other hand, as an example of a general case that is not a special use uses a silicon (silica) coating film. In general, silicone silica coating film is widely used in the field of construction materials, silicone resins, hardeners and solvents in order to easily separate the film from each other when the film is wound or laminated on a common transparent film such as PET or OPP It is disclosed a technology for applying a silicone coating solution consisting of a mixture (Korean Patent Application No. 10-1991-0009466).

The technique can be applied to the existing transparent film by coating a silicone coating liquid of a new composition with a small amount of dye, so that the coated portion shows a color, it is easy for the operator to determine whether the silicone coating during the silicone coating operation. It would be. That is, it prevents the uncoated film from being mixed into the silicon-coated film and easily checks whether the uncoated part is incorporated into the coated part by visual inspection after the final slitting operation. It is a technology aimed at providing a new silicone silica coating film which can be discriminated.

The present invention has an object to provide a heat-insulating solar film comprising a photocatalyst layer, further having a desirable function.

1 is a view showing a structure of a solar film according to the present invention.

2 is a view showing a process of forming a photocatalyst layer of the solar film of the present invention.

Figure 3 is a view showing a cross-sectional structure of the silica coating layer of the solar film of the present invention.

<Description of the code | symbol about the principal part of drawings>

10: polyester layer 20: adhesive layer

30: backing paper 40: silicon (silica) layer

45: empty space of the silicon (silica) layer 50: photocatalyst solution layer

55: droplet of photocatalyst solution

Features of the present invention for achieving the above object, in the solar film, polyester (PET) layer (10); A thermal barrier adhesive layer (20) formed on one side of the polyester layer (10); A silicon (silica) coating layer 40 formed on the other side of the polyester layer 10; And a photocatalyst layer 50 formed of a photocatalyst solution on the silicon (silica) coating layer 40, wherein the photocatalyst solution 55 partially penetrates between the voids 45 of the silicon (silica) coating layer 40. As it enters, the photocatalyst layer is formed.

Hereinafter, with reference to the accompanying drawings, it will be described embodiments of the configuration according to the present invention in detail.

1 is a view showing the structure of the photocatalyst solar film according to the present invention, a polyester layer 10, pressure-sensitive adhesive layer 20, backing paper protective film 30, a silicon (silica) coating layer 40, and a photocatalyst layer ( 50 is shown. The backing paper protective film 30 can be peeled off during the use of the solar film. The thickest and core of the layers is the polyester layer 10, which is typically 9-50 micrometers thick.

The objective function of the solar film according to the present invention includes a purification function of indoor air. Therefore, when the solar film according to the present invention is used for the glass window, the back surface protective film 30 is peeled off from the interior side of the glass window, and the adhesive layer 20 is attached to the glass window. In addition, the photocatalyst layer 50 is positioned opposite to the pressure-sensitive adhesive layer 20 with respect to the polyester layer 10. That is, the structure of the film is formed so that the photocatalytic layer 50 is located most toward the interior.

Figure 2 is a view showing for explaining the formation process of the photocatalyst layer of the solar film of the present invention. The plane of the layer of silicon (silica) coating 40 is shown and the pore space 45 of the silicon (silica) coating is not visible to the naked eye.

Drops 55 of the photocatalyst solution may be sprayed using a spray, but in this case, the photocatalyst solution may be condensed and cloudy. Thus, when the photocatalyst solution particles 55 are preferably evenly coated on the surface of the silicon (silica) coating layer 40 using a compressor, they are formed like a single layer.

Figure 3 shows a cross-sectional structure of the silicon (silica) coating layer of the solar film according to the present invention. The photocatalyst solution particles 55 are shown in the state where they enter the empty space 45 of the silicon (silica) coating layer 40. The photocatalyst solution particles 55 are silica treated in each void 45, so that the photocatalyst layer 50 is formed over the silicon (silica) coating layer 40.

An example of the photocatalyst solution component in the photocatalyst solar film having the above structure is TiO ₂ solution particles. A photocatalyst mainly composed of titanium dioxide is preferable, but another may be selected for the purpose of making room air comfortable.

Among photocatalysts, titanium dioxide has good acid resistance and alkali resistance and is harmless to human body. Titanium dioxide photocatalysts are n-type semiconductors that, when subjected to ultraviolet light (400 nm), form electrons and electron holes to form hydroxy radicals (-OH) and super oxides with strong oxidizing power.

One of the characteristic features of the present invention is that, since a light source is required for the function of the photocatalyst, it is preferable to use a transparent material, ie, a polyester film, through which a part of sunlight passes when using a natural light source outside the glass window. That is, when some ultraviolet rays pass through the polyester layer 10 and reach the photocatalytic layer 50, deodorization and antibacterial effects of the photocatalyst may be exhibited. On the other hand, it is not possible to form the photocatalytic layer 50 directly on the polyester layer 10, and the silicon (silica) coating layer 40 needs to be in the middle. It is for the structure of the film which can have all transparency, heat insulation, and the functionality of the photocatalyst.

When the photocatalyst solar film according to the present invention having the configuration as described above is used as an inner wall material, the following effects are obtained. That is, when used for the interior of the interior space, such as offices can keep the office air comfortable by oxidative decomposition of organic matter of the photocatalyst layer. In particular, when used in a smoking room, such as can remove the smell of tobacco in the smoking room, new apartments can remove volatile compounds (VOCs) and formaldehyde, which are harmful gases.

In addition, since the photocatalyst layer itself also has a UV blocking function, the photocatalytic solar film as a whole utilizes the photocatalytic function of some ultraviolet rays, but also has a role of better UV blocking.

Comparative results of the cooling and heating effects before and after construction of the photocatalyst solar film according to the present invention are as follows. The results were measured without the cooling and heating units running.

As a result of the measurement, before constructing the film of the present invention, the outside air temperature (average) is based on 29 ° C, and the room temperature is 30 °, 10 ° 31 °, 11 ° 32 °, 12 ° 33 °, It was 34 degrees at 13, 32 degrees at 14, 32 degrees at 15, and 31 degrees at 16.

After constructing the film of the present invention, the outside air temperature (average) is 21.2 ° C, at 31.2 degrees at 9:30 am, 31.8 degrees at 10:30, 32.5 degrees at 11:30, and 12:30. It was 33 degrees, 34.9 degrees at 13:30, 33 degrees at 14:30, 32.8 degrees at 15:30, and 31 degrees at 16:30.

That is, the correction of the error or condition of the measurement, the result can be improved by 35% the amount of cooling secondary summer savings after construction than before the photocatalytic solar film. Similarly, sun reduction was 68%, glare reduction was 71%, and sun protection was 99%.

Claims (1)

Polyester (PET) layer 10; A thermal barrier adhesive layer (20) formed on one side of the polyester layer (10); A silica coating layer 40 formed on the other side of the polyester layer 10; It includes a photocatalyst layer 50 formed of a photocatalyst solution on the silica coating layer 40, The photocatalyst layer is formed by partially penetrating the photocatalyst solution (55) between the voids (45) of the silica coating layer (40).