KR101470901B1 - Heat-reflecting film with the visibility improvement and the thermal barrier and thermal insulation characteristics - Google Patents

Abstract

The present invention relates to a heat-reflecting film. The heat-reflecting film includes a base material layer formed of PET or PC as a main material; a coating layer, on which a coating material reflecting infrared rays while absorbing heat is deposited, on an upper portion of the base material layer; an adhesion layer, to which an adhesive for selectively shielding ultraviolet rays and infrared rays adheres, on a lower portion of the base material layer; and a thin film layer in which a thin film having visibility and shielding properties is selectively further deposited between the base material layer and the coating layer or between the base material layer and the adhesion layer. Thus, the present invention may have a superior effect in competitive price by significantly reducing required manufacturing costs because the conventional apparatus and method are used as they are while maintaining all of the visibility, the shielding properties, and the diffusion function.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heat-reflecting film,

The present invention relates to a heat shielding film, and more particularly to a heat shielding film which improves visibility for preventing loss of overall energy by shielding sunlight transmitted from outside and inside while securing visibility by being adhered to a building or window of an automobile, And a heat reflecting film having both thermal insulation and heat insulation properties.

Generally, sunlight is largely divided into ultraviolet rays, visible rays and infrared rays, and infrared rays are divided into near-infrared rays and far-infrared rays. Among them, ultraviolet rays are about 6%, visible rays are about 46% and infrared rays are about 48%. When exposed to the human body for a long time, it causes skin aging and cancer. Infrared rays increase indoor temperature, Cooling costs became an increasing cause. Accordingly, products for preventing exposure to ultraviolet rays and infrared rays are put into practical use by adhering a barrier film for shielding sunlight including ultraviolet rays and infrared rays directly to the inside of the room, to a building or a windshield of an automobile.

On the other hand, the Ministry of Land, Transport and Maritime Affairs (MOEAT) has issued an amendment to the 'Green Building Promotion Act', and as of May 2015, the outer wall of the building should be constructed of glass to construct buildings or remodel . An energy evaluation report showing the annual energy consumption of buildings, greenhouse gas emissions, and energy efficiency rating should be made online, and the civilian qualification for building energy rating will be converted into national qualification. In addition, support for revitalization of green remodeling for improvement of energy performance and efficiency improvement of existing buildings is strengthened and support for low-interest loans. As the demand for barrier film is expected to increase sharply, development for securing competitiveness in terms of quality and price as well as excellent functions is intensifying.

For example, in Korean Patent Registration No. 10-1019498 entitled " A thermal barrier film containing tungsten bronze compound and a method for producing the same, "a thermal barrier film having a thermal barrier layer formed on one surface of a substrate layer, wherein the thermal barrier layer comprises tungsten bronze Wherein the tungsten bronze compound is selected from the group consisting of A (B (X? 0.67), B '(1-X? 0.33)) O3, A (B (X? 0.33) O3-type perovskite structure, wherein A comprises an alkali metal to an alkaline earth metal, and B and B 'comprise at least one element or compound selected from transition metals, and the tungsten bronze compound is synthesized by a polyol synthesis method The present invention also provides a heat shrinkable film containing a tungsten bronze compound.

According to another example of Korean Patent Registration No. 10-1319706 entitled " Method for manufacturing a multilayered transparent thermal barrier film combining a boron compound coating and a sputtering process ", an inorganic metal oxide as a surface of the first PET film layer, Coating an organic IR blocking layer with an IR blocking agent comprising a boron compound, a diluent solvent, an additive, and a catalyst; Drying the organic IR barrier layer; Forming a sputtering layer for IR reflection on the surface on which the organic IR blocking layer is formed 10 to 50 times; Bonding the second PET film to the surface of the sputtering layer; Bonding a release film to the surface of the second PET film; And coating a hard coat layer on the other surface of the first PET film, wherein the sputtering layer forming step comprises forming an inorganic metal oxide through a sputtering process, wherein the inorganic metal oxide is selected from the group consisting of ITO, AZO, Ag, AZO, ITO The sputtering layer formed by selectively using one of ITO, AZO, Ag, AZO and ITO is formed by substituting any one of W, Ni, Cr, Al, SuS and Ti And a method of manufacturing a multilayered transparent heat shielding film that combines a boron compound coating and a sputtering process.

The former and latter use tungsten bronze compounds and boron compounds, respectively, to enhance visibility and shielding, and to suppress diffuse reflection. However, there is a problem in that the new material, the method and the apparatus cause the overall manufacturing process to be difficult and complicated, resulting in an increase in the price of the film.

Korean Patent Registration No. 10-1019498 entitled " Thermal Short Film Containing Tungsten Bronze Compound and Method for Producing the Same " Korean Patent Registration No. 10-1319706 entitled " Method for Producing Multilayer Transparent Thermal Short Film Combined with Boron Compound Coating and Sputtering Process "

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a method and a device that can meet the trend of having both visibility, In addition to lowering the cost significantly, it also facilitates the adjustment of visibility and shielding by using the inherent characteristics of the oxide film and the metal film. Therefore, it is possible to improve the visibility to meet the demand of the user with various products, The purpose of the film is to provide.

In order to achieve the above object, the present invention provides a method of manufacturing a semiconductor device, comprising: a base layer made of PET (Poly Ethylene Terephthalate) or PC (Poly Carbonate); A coating layer on which a coating agent for absorbing heat is deposited while reflecting infrared rays onto the substrate layer; An adhesive layer to which an adhesive for selectively shielding ultraviolet rays and infrared rays is adhered to the lower portion of the base layer; And a thin film layer between the substrate layer and the coating layer or between the substrate layer and the adhesive layer to selectively deposit a thin film having a visible property and a shielding property.

At this time, the coating agent according to the present invention is characterized in that 5 to 40% by weight of antimony tin oxide (ATO) and 60 to 95% by weight of acrylic resin are added.

The coating layer according to the present invention is characterized in that the coating is formed to a thickness of 1 to 5 탆 by a wet coating method.

At this time, the adhesive according to the present invention is characterized in that a blocking agent for selectively shielding ultraviolet rays and infrared rays is added to an adhesive solution using acrylic or silicone.

Further, the adhesive layer according to the present invention is formed by applying an adhesive containing 1 to 5% by weight of a blocking agent to 95 to 99% by weight of an adhesive solution by a wet coating method to a thickness of 5 to 30 탆.

In addition, the blocking agent according to the present invention is characterized in that powders obtained by pulverizing dimonium (Dimonium) shielding infrared rays to a particle size of 100 to 300 nm and powders obtained by pulverizing phthalocyanine to a particle size of 10 to 100 nm are mixed .

At this time, the thin film layer according to the present invention is formed by cross-deposition of an oxide film and a metal film in 3 to 7 layers.

In addition, the oxide film according to the present invention may be formed by vacuum plasma etching a material selected from among SnO, ZnO, Nb ₂ O ₅ , indium tin oxide (ITO), aluminum doped zinc oxide (AZO), SnO ₂ , and indium gallium oxide Is formed by deposition using a sputtering method using a thickness of 10 to 50 nm.

Further, the metal film according to the present invention may be formed by depositing an alloy material containing 60 to 95% by weight of Ag, 2 to 20% by weight of Pt and 2 to 20% by weight of Cu by a sputtering method using vacuum plasma to a thickness of 5 to 50 nm .

The heat reflecting film according to a modification of the present invention is characterized by further comprising a base layer and an adhesive layer in the lower part of the adhesive layer.

It should be understood, however, that the terminology or words of the present specification and claims should not be construed in an ordinary sense or in a dictionary, and that the inventors shall not be limited to the concept of a term It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be properly defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

As described above, the present invention has the following effects.

First, the coating layer located on the indoor side is formed of ATO reflecting heat, and it has both heat radiation and heat absorption functions, which can reduce the energy required for cooling / heating, .

Second, the thin film layer located on the intermediate side can form an oxide film and a metal film that shield ultraviolet rays and infrared rays, and can reduce the energy required for cooling / heating together with the coating layer.

Third, the adhesive layer located on the outdoor side can double the shielding force of the thin film layer by absorbing ultraviolet rays and infrared rays together with an adhesive function for attaching to the window glass.

Fourth, since it is easy to adjust the visibility and the shielding property by using the inherent characteristics of the oxide film and the metal film, it can meet the needs of the users with various products.

Fifth, it is possible to apply the device and the method as it is and to use it as it is, so that the cost required for manufacturing can be significantly lowered, thereby enabling cost competitiveness.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram showing a heat reflecting film according to an embodiment of the present invention; Fig.
2 is a view showing a heat reflecting film according to another embodiment of the present invention.
3 is a sectional view showing a heat reflecting film according to a modification of the present invention.

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

The present invention relates to a heat reflecting film and relates to an improvement in visibility with a coating layer (20), an adhesive layer (30), and a thin film layer (40) laminated on upper and lower sides of a base layer To a heat reflecting film. The heat reflecting film of the present invention is divided into an embodiment (FIG. 1) and another embodiment (FIG. 2) according to the position of the thin film layer 40 laminated on the substrate layer 10, (Fig. 3) according to the number of the adhesive layers 30, respectively.

1B, the protective layer 50, the adhesive layer 30, the substrate layer 10, the thin film layer 40, and the coating layer 20 are stacked in this order on the outdoor (lower) side. 2B, the protective layer 50, the adhesive layer 30, the thin film layer 40, the base layer 10, and the coating layer 20 are stacked in this order on the outer (lower) side. That is, it is possible to provide a heat reflecting film suitable for season, area, and environment to be applied to a window according to the lamination position of the thin film layer 40.

In the heat reflecting film according to the modification, the base layer 10 and the adhesive layer 30 are stacked in order from the laminated structure according to the embodiment to the outdoor side. Such a heat reflecting film is suitable for a window pane requiring a relatively high strength as the base layer 10 is constructed in a double structure. The present invention is not limited to these embodiments, and various modifications may be made without departing from the spirit and scope of the present invention as set forth in the appended claims.

First, according to the present invention, a base layer 10 made of ET (Poly Ethylene Terephthalate) or PC (Poly Carbonate) having a thickness of 20 to 100 μm is used. Such base layer 10 can improve chemical bonding through a predetermined pretreatment process. That is, when the base layer 10 is treated by a plasma or pyrolysis or corona process, adhesion performance of the coating layer 20, the adhesive layer 30, and the thin film layer 40 can be improved. Of course, this preprocessing process may be omitted.

Then, a thin film layer 40 is deposited on the substrate layer 10 according to the present invention. The thin film layer 40 has a function of shielding ultraviolet rays and infrared rays and transmitting more than 50% of visible rays. The thin film layer 40 is formed of the double structure of the oxide film 41 and the metal film 45. That is, the oxide film 41 is deposited to a thickness of 10 to 50 nm on the oxide layer 41 on the substrate layer 10 by adjusting the plasma power and the deposition rate on the oxide target in a vacuum state using a sputtering method. Then, a metal film 45 is formed on the surface of the oxide film 41 by vacuum evaporation, which is the same as that of the oxide film 41, and is secondarily deposited to a thickness of 5 to 50 nm.

Then, the oxide film 41 is again deposited by the third method under the same conditions and conditions. Here, if the thicknesses of the oxide film 41 and the metal film 45 are too thin, the shielding property is deteriorated. If too thick, the visibility is poor. Therefore, it is preferable that the film is formed to have an appropriate thickness within a specified range according to the conditions of the heat reflecting film.

At this time, the oxide film 41 is formed of SnO, ZnO, Nb ₂ O ₅ , ITO (indium tin oxide), AZO (aluminum doped zinc oxide), SnO ₂ , IGO (Indium Gallium Oxide ) Is used. Such a material is capable of ensuring the visibility of visible light, and at the same time, is an oxide having transparency and electrical characteristics, and the higher the electric conductivity, the better the heat shielding property. Among these, ITO, Nb ₂ O ₅ and IGO are excellent in terms of functionality, and SnO, ZnO and AZO are effective in terms of cost. Therefore, it is desirable to select and use materials with good mass productivity in consideration of function and cost.

In addition, the metal film 45 is formed of an alloy containing 60 to 95% by weight of Ag, 2 to 20% by weight of Pt and 2 to 20% by weight of Cu. Alloy water is composed of materials with low electrical resistivity, and when it is composed of low-emissivity material, ultraviolet ray shielding effect is excellent. That is, the higher the content of Ag (silver), the higher the electrical conductivity and the lower emission characteristic, but the lower the transmittance of visible light, the worse the visibility and the higher material cost. Ag has a characteristic of being easily oxidized by reacting with oxygen, so that it is inferior in durability when exposed to the outside. Therefore, the metal film 45 must have a predetermined mixing ratio so as to maintain the shape of the alloy (Ag + Pt + Cu) so that the heat shielding property, the oxidation prevention, and the visibility through visible light transmission are secured and the cost is satisfied.

As described above, the thin film layer 40 is formed by appropriately configuring the oxide film 41 and the metal film 45 to be three layers (oxide film + metal film + oxide film) or more so that the heat reflecting film As shown in FIG.

Next, a coating layer 20 is deposited on the top of the thin film layer 40 according to the present invention. The coating layer 20 has the function of reflecting heat, preventing corrosion of the substrate layer 10, and transmitting at least 40% of visible light. The coating layer 20 is formed by applying a coating material using a wet coating material to a thickness of 1 to 5 탆 using a slit die and a roll coating apparatus, followed by curing by thermal drying and UV drying. The coating layer 20 has a surface resistance (Ω / sq) value of 1 × ^{10 12} , and the surface resistance must have a predetermined value to secure the heat radiation and shielding efficiency.

In this case, the coating agent is composed of 10 to 30% by weight of Tin Oxide, 1 to 10% by weight of Antimony, and 60 to 90% by weight of acrylic resin, and the binder, solvent and additives are further mixed. Such a coating agent reflects infrared rays according to electrical property values and forms a complex protective coating layer 20 which also functions as heat absorption (heat insulation) and surface reflection prevention function. Here, acrylic resin has a mechanical property (strength, surface protection, etc.) of the coating layer 20 as a basic constitution of the coating layer 20. In addition, optical characteristics such as heat block, heat absorption, and surface reflection prevention are ensured by the composition of antimony and tin oxide. The ATO coating layer 20 is advantageous in providing additional functions and securing properties, and is a universal raw material that can be easily obtained. The ATO coating layer 20 is advantageous in providing various functions and cost reduction compared to rare-earth oxides (indium).

According to the present invention, the adhesive layer 30 is applied to the bottom of the substrate layer 10, and then the protective layer 50 is adhered. The adhesive layer 30 has an adhesive function for adhering a heat reflecting film to a window glass and a function for shielding external heat. The protective layer 50 protects the heat reflecting film and is peeled off before adhering. The adhesive layer 30 is mainly formed of an acrylic pressure-sensitive adhesive, urethane, or a silicon pressure-sensitive adhesive. The pressure-sensitive adhesive is applied by a slit die coater or a roll coater to a thickness of 5 to 20 μm.

At this time, the adhesive is one in which 0.5 to 5% by weight of a blocking agent for selectively shielding infrared rays is added to an adhesive solution using acrylic, urethane, or silicone system. Preferably, the adhesive agent is added to 20 to 50% Mix solvent and solvent to make 100%. Herein, the powder obtained by pulverizing dimonium (Dimonium) shielding infrared rays to a particle size of 100 to 300 nm and powder obtained by pulverizing phthalocyanine to a particle size of 10 to 100 nm are mixed in an appropriate ratio.

Dimonium is an absorbing dye that absorbs heat rays (infrared rays) at a wavelength of 1000 nm. Phthalocyanine is a dye that absorbs near-infrared rays at a wavelength band of 900 nm. It has a heat blocking effect , And external reflection characteristics can be adjusted through color adjustment. If the particle size of dimonium and phthalocyanine used in the adhesive is too small, the visibility is improved but the shielding property is lowered so that particles of a predetermined size are used.

≪ Diimonium compound <

The diimmonium compound exhibits a wide and uniform absorption efficiency in the near infrared region (particularly at a wavelength of 750 to 1100 nm) as shown in Table 1, and exhibits excellent transmission characteristics due to low absorption at the visible region (wavelength of 400 to 750 nm).

The phthalocyanine compound provides a phthalocyanine compound exhibiting a wide and uniform absorption efficiency in the near infrared region as shown in Table 2, and exhibiting excellent transmission characteristics in the visible light region.

The heat reflecting film composed of these characteristics and structure has excellent light transmission and heat shielding properties compared to the conventional general reflecting film and insulating film, has a high effect of blocking summer solar energy, and is excellent in complementary effect of winter indoor heating energy. This is an excellent product. In addition, it can be applied to various applications by adjusting the reflection and external reflection of the existing reflection film.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

10: Base layer 20: Coating layer
30: Coating layer 40: Thin film layer
41: oxide film 45: metal film
50: Protective layer

Claims (10)

A heat reflecting film comprising:
A base layer based on PET (Poly Ethylene Terephthalate) or PC (Poly Carbonate);
A coating layer on which a coating agent for absorbing heat is deposited while reflecting infrared rays onto the substrate layer;
An adhesive layer to which an adhesive for selectively shielding ultraviolet rays and infrared rays is adhered to the lower portion of the base layer; And
And a thin film layer selectively deposited between the base layer and the coating layer or between the base layer and the adhesive layer, the thin film having a visible property and a shielding property, wherein the thin film layer has improved visibility and thermal insulation and thermal insulation properties. The method according to claim 1,
Wherein the coating agent comprises 5 to 40% by weight of antimony tin oxide (ATO) and 60 to 95% by weight of acrylic resin, and a heat reflecting film having improved visibility and heat shielding and heat insulating properties . The method according to claim 1,
Wherein the coating layer is formed to have a thickness of 1 to 5 탆 by a wet coating method. The method according to claim 1,
Wherein the adhesive is a heat reflecting film having improved visibility and thermal insulation and heat insulating properties, which is obtained by adding a blocking agent selectively shielding ultraviolet rays and infrared rays to an adhesive solution using acrylic or silicon. The method according to claim 1,
Wherein the adhesive layer is formed by applying an adhesive containing 1 to 5% by weight of a blocking agent to 95 to 99% by weight of the adhesive solution by a wet coating method to a thickness of 5 to 30 탆, Heat reflective film combines characteristics. 6. The method of claim 5,
The barrier agent is a mixture of powders obtained by pulverizing dimonium (Dimonium) shielding infrared rays with a particle size of 100 to 300 nm and powders pulverized with phthalocyanine to a particle size of 10 to 100 nm. Thus, visibility improvement, Heat reflective film combines characteristics. The method according to claim 1,
Wherein the thin film layer is formed by cross-deposition of an oxide film and a metal film in 3 to 7 layers. 8. The method of claim 7,
The oxide layer may be formed of a material selected from the group consisting of SnO, ZnO, Nb ₂ O ₅ , indium tin oxide (ITO), aluminum doped zinc oxide (AZO), SnO ₂ , and indium gallium oxide (IGO) by a sputtering method using a vacuum plasma. Wherein the heat-reflecting film is formed by evaporation to a thickness of 50 nm. 8. The method of claim 7,
Wherein the metal film is formed by depositing a mixture of 60 to 95% by weight of Ag, 2 to 20% by weight of Pt and 2 to 20% by weight of Cu by a sputtering method using vacuum plasma to a thickness of 5 to 50 nm. Heat-reflecting film combines thermal insulation and thermal insulation properties. The method according to claim 1,
Wherein the heat reflecting film further comprises a base layer and an adhesive layer in the lower part of the adhesive layer, wherein the heat reflecting film has improved visibility and thermal insulation and heat insulating properties.

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