KR101487052B1 - Resin composite for thermo-shield and thermo-shield adhesive film using the same - Google Patents

Abstract

And a heat-sensitive adhesive film using the same.
The heat-shrinkable film according to the present invention comprises a heat-shrinkable film and an adhesive layer formed on the heat-shrinkable film, wherein the heat-shrinkable film comprises 100 parts by weight of a polyvinyl chloride (PVC) resin, 20 to 60 parts by weight of a heat- 10 to 50 parts by weight of a plasticizer, 3 to 5 parts by weight of a heat stabilizer and 0.5 to 2 parts by weight of an ultraviolet stabilizer.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin composition for heat insulation and a heat-sensitive adhesive film using the same. BACKGROUND OF THE INVENTION [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat shielding layer, and more particularly, to a heat shielding resin composition having excellent heat shielding properties and a heat shielding adhesive film using the same.

Solar radiation consists of ultraviolet, visible and infrared rays. Among them, infrared rays hit the object to cause vibration and generate heat energy. Such thermal energy raises the room temperature by conduction and convection, and causes a cooling load problem.

Recently, energy saving is required due to depletion of petroleum energy and price increase due to supply and demand problems. As a result, heat shielding films are attached to the glass windows of vehicles and buildings, and thermal paints are applied to the roofs of vehicles and buildings to reduce the energy cost by suppressing the temperature rise in the room by infrared rays.

Generally, a heat-sensitive adhesive film is formed by coating ATO (Antimony Tin Oxide), ITO (Indium Tin Oxide), dye or the like on a substrate such as polyethylene terephthalate (PET), coating, sputtering, ). In this case, however, a problem arises that the surface color is distorted.

In addition, the conventional heat-shading coating material is provided with a bubble-shaped spherical inorganic material, mica (MICA), a heat-sensitive pigment, and the like in a resin to realize a reflection and adiabatic effect. Generally, the heat paints are coated at a thickness of 100 to 200 μm and applied by spraying about 3 to 4 times, which takes a long time of 3 to 4 days for coating and drying.

Japanese Patent Laid-Open Publication No. 2011-148923 (published on Apr. 4, 2011) discloses a related art document, which discloses a composition comprising a sheet on which an infrared ray reflector of metal oxide-coated mica is put in a base of a thermoplastic resin, Discloses a heat insulating sheet.

An object of the present invention is to provide a heat-resistant resin composition having excellent heat-shielding properties, and to provide a heat-sensitive adhesive film having excellent heat-shielding properties, easy construction, and easy desorption and replacement after construction.

According to an aspect of the present invention, there is provided a heat shielding adhesive film comprising a heat shielding film and an adhesive layer formed on the heat shielding film, wherein the heat shielding film comprises 100 parts by weight of a polyvinyl chloride (PVC) 20 to 60 parts by weight of a heat-resistant raw material, 10 to 50 parts by weight of a plasticizer, 3 to 5 parts by weight of a heat stabilizer and 0.5 to 2 parts by weight of a UV stabilizer.

To achieve the above object, the present invention provides a heat shielding resin composition comprising 100 parts by weight of a polyvinyl chloride resin, 20 to 60 parts by weight of a heat-resistant raw material, 10 to 50 parts by weight of a plasticizer, 3 to 5 parts by weight of a heat stabilizer, 0.5 to 2 parts by weight.

The heat-sensitive adhesive film according to the present invention enhances the reflectance of infrared rays when adhering to a surface of a vehicle or a building using a heat-resistant material to the heat-sensitive film and the adhesive layer, thereby minimizing conduction and convection to the room, .

In addition, since it is applied in the form of a film, it is possible to construct in a short period of time, and it is easy to construct. Further, by using the pressure-sensitive adhesive layer having stain resistance, it is easy to remove and replace after installation.

Furthermore, it can be used as a film itself, can also be printed on the surface of the film to be advertised, and when an emboss is formed on the surface or a pearl or the like is included in the heat-sensitive film or adhesive layer, a decoration function I have.

When a heat-resistant resin composition according to the present invention is used, it is possible to manufacture a heat shielding structure having excellent heat-shielding properties in addition to the heat-shielding adhesive film.

1 is a cross-sectional view of a heat-shrinkable pressure-sensitive adhesive film according to an embodiment of the present invention.
2 is a flowchart illustrating a method of manufacturing a heat-sensitive adhesive film according to an embodiment of the present invention.
3 is a flowchart showing a method of manufacturing a heat-sensitive adhesive film according to another embodiment of the present invention.
FIG. 4 is a graph showing changes in temperature of the rear side of the iron plate located on the opposite side of the specimen of the specimen-attached iron plate according to the infrared irradiation in Example 1 and Comparative Example.
5 is a graph showing the infrared reflectance of the surface of the specimen in the infrared wavelength range after the infrared irradiation in Example 1 and Comparative Example.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a heat-sensitive adhesive film having excellent heat shielding properties according to the present invention and a method for producing the same will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a heat-shrinkable pressure-sensitive adhesive film according to an embodiment of the present invention.

Referring to FIG. 1, a heat shielding adhesive film 100 according to an embodiment of the present invention includes a heat shielding film 110, an adhesive layer 120, and a release film 130 from below.

The heat-sensitive adhesive film (100) of the present invention adheres to a window of a vehicle or a building or an adhered surface of the outside to suppress an increase in temperature of a room such as a vehicle or a building due to infrared rays among sunlight. In addition, the heat shielding adhesive film 100 may be used for decorating a window or the like.

The heat-shrinkable pressure-sensitive adhesive film 100 preferably has an infrared reflectance of 70% or more on the surface at an infrared wavelength band of 780 nm to 2500 nm so as to have sufficient heat-shielding properties.

The heat shielding adhesive film 100 may be embodied as a monochromatic adhesive film, a transparent adhesive film, or a decoration film.

In the case of the monochromatic adhesive film described above, the heat-shielding material 110 is contained in the heat-shielding film 110 or the adhesive layer 120 in white or colored, and is applied to the exterior of the vehicle or the vending machine such as a bus, a train, a refrigerator, It can be used for advertisement after the output of the inspection on the surface.

In the case of the above-mentioned transparent adhesive film, the heat shielding material may be transparently contained in the heat shielding film 110 or the adhesive layer 120, and may be used for protecting the image output image or attached to the adherend with the film itself.

In the case of the above-mentioned decorating film, an emboss is formed on the exposed surface, the heat shielding film 110 or the adhesive layer 120 is colored, or the pearl enters the heat shielding film 110 or the adhesive layer 120 , Which can be used for decorating by being attached to a window or the like.

On the other hand, in the case of a monochromatic or transparent adhesive film, the heat-shielding material may be coated on the surface of the resin layer, which is the base of the heat-shielding film 110, in a transparent, white or colored state.

The heat-shrinkable film 110 according to an embodiment of the present invention includes polyvinyl chloride (PVC) resin, a heat-stabilizing raw material, a plasticizer, a heat stabilizer, and an ultraviolet stabilizer.

Hereinafter, the role and content of each component of the heat-shrinkable resin composition contained in the heat-shrinkable film 110 according to the embodiment of the present invention will be described.

In the present invention, the PVC resin serves as a base material of the heat shielding film 110, and for example, a product name LS100 (manufactured by LG Chemical) can be used.

In the present invention, the heat-resistant raw material is preferably added in an amount of 20 to 60 parts by weight based on 100 parts by weight of the PVC resin, and the heat-sensitive adhesive film 100 is irradiated on the surface of the heat- And substantially suppresses the temperature rise in the adherend surface when adhered to the adherend surface.

Such a heat-shrinkable raw material may be a titanium dioxide-based material such as titanium dioxide or a compound thereof. In addition, a silica-based material, a glass fiber-based material, a diatomaceous earth-based material, a polyethylene-based nonwoven fabric, a polypropylene-based nonwoven fabric, a polyurethane-based nonwoven fabric, and a calcium oxide-based material may be used. The heat-resistant raw materials may be used alone or as a mixture of two or more of them. The heat-resistant raw material is preferably a titanium dioxide-based material having high dispersibility, excellent compatibility with PVC resin, and excellent heat-shielding properties. For example, the heat-shrinkable raw material may be a titanium dioxide-based material, trade name R104 (manufactured by Dupont).

If such heat-resistant raw materials are contained in an amount of less than 20 parts by weight based on 100 parts by weight of the PVC resin, sufficient heat-shielding properties can not be secured. On the other hand, when the heat-resistant raw material is contained in an amount of more than 60 parts by weight with respect to 100 parts by weight of the PVC resin, there is a phenomenon that the material cost may be raised without any further effect, carbides are generated, do.

In the present invention, the plasticizer is preferably added in an amount of 10 to 50 parts by weight based on 100 parts by weight of the PVC resin, and softens the PVC resin.

When the plasticizer is contained in an amount of less than 10 parts by weight based on 100 parts by weight of the PVC resin, the PVC resin may not be sufficiently soft and the formation of the heat shielding film 110 may be difficult. On the other hand, if the plasticizer is contained in an amount of more than 50 parts by weight based on 100 parts by weight of the PVC resin, the physical properties of the PVC resin may be excessively reduced and the mechanical strength may be weak, so that the formation of the heat shielding film 110 may be difficult.

The plasticizer may be a phthalate, an adipate or a trimellitate, and one of them may be used alone or a mixture of two or more thereof may be used. Preferably, the plasticizer is a phthalate-based DOP (manufactured by LG Chemical). DOP is excellent in compatibility with PVC resin, low in cost, and excellent in kneading ability with titanium dioxide.

In the present invention, the heat stabilizer is preferably added in an amount of 3 to 5 parts by weight based on 100 parts by weight of the PVC resin. The heat stabilizer improves the heat resistance of the heat shielding film 110.

When the heat stabilizer is contained in an amount of less than 3 parts by weight based on 100 parts by weight of the PVC resin, the function as a heat stabilizer may not be sufficiently exhibited. On the other hand, if the heat stabilizer is included in an amount exceeding 5 parts by weight based on 100 parts by weight of the PVC resin, the heat shielding film 110 may be softened or excess may migrate to the outside due to the plasticizing efficiency.

For example, the heat stabilizer may include a hindered phenol compound, a phosphorus compound, an epoxy compound, a tin compound, a sulfur compound, and the like, and one of them may be used alone, Can be mixed and used. Preferably, the heat stabilizer can use an epoxy compound, which is excellent in thermal stability for suppressing the yellowing of the PVC resin during processing and is excellent in compatibility with the PVC resin, so that it can serve as a secondary plasticizer, The effect of reducing the content of the plasticizer is exhibited.

In the present invention, the ultraviolet light stabilizer is preferably added in an amount of 0.5 to 2 parts by weight based on 100 parts by weight of the PVC resin. The ultraviolet light stabilizer improves the light resistance of the heat shield film 110 to prevent discoloration of the heat shield adhesive film 100.

If the ultraviolet light stabilizer is contained in an amount of less than 0.1 part by weight based on 100 parts by weight of the PVC resin, the light resistance of the heat shielding film 110 can not be sufficiently secured, and prevention of discoloration of the heat shielding adhesive film 100 may be difficult. On the other hand, when the ultraviolet stabilizer is contained in an amount exceeding 2 parts by weight based on 100 parts by weight of the PVC resin, the excess may migrate to the outside.

Examples of the ultraviolet stabilizer include benzophenone, phenyl silicate, bis (2,2,6,6-tetramethyl-4-piperidinyl) sebacate, 2- (3 ', 5'- Butyl-2'-hydroxyphenyl) -5-chlorobenzotriazole, 2- (3,5-di-tert- Methylphenyl) benzotriazole, 2- (3'-tertiary-butyl-2'-hydroxy-5'-methylphenyl) -5- chlorobenzotriazole and a hindered amine system These may be used alone or in combination of two or more. The ultraviolet stabilizer is preferably a benzophenone-based material having excellent compatibility with the PVC resin and excellent in the effect of preventing oxidation of the PVC resin.

The heat shielding film 110 may be made of a transparent, white or colored film (sheet) including a resin composition for heat storage. Alternatively, the heat shielding film 110 may be formed on the upper surface of the PVC resin including a heat-resistant raw material coating layer (not shown) coated with a heat-resistant resin composition except for PVC resin in a transparent, white or colored state.

The heat shielding film 110 may be further formed with an embossed surface on an exposed surface that is not connected to the adhesive layer 120 so as to be used for decorating a window or the like.

Further, the heat shielding film 110 may be colored or formed so as to be used for decoration, or may further include a pearl.

In the present invention, the heat-shrinkable film 110 is preferably added with pearl in an amount of 50 parts by weight or less based on 100 parts by weight of the PVC resin.

If the heat-shrinkable film 110 contains more than 50 parts by weight of pearl based on 100 parts by weight of the PVC resin, the particles may aggregate and be difficult to process.

The adhesive layer 120 is formed for attachment to a window or an exterior of a vehicle or a building or the like, which is an adhered surface, and is formed on one surface of the heat shielding film 110 (hereinafter referred to as an upper surface with reference to FIG. 1).

The adhesive layer 120 may be formed by coating directly on the upper surface of the heat shielding film 110. In addition, the adhesive layer 120 may be formed by coating the lower surface of the release film 130 in advance and then laminating the release film 130 on the upper surface of the heat-shrinkable film 110.

This adhesive layer 120 is required to have an adiabatic (heat-insulating) function and adherence to the heat-shielding film 110, the release film 130, and the adhered surface such as a vehicle or a building. In addition, the adhesive layer 120 may be required to have stain resistance to facilitate detachment and replacement after installation on a surface of a vehicle, a building, or the like, and hiding power may be required so that the inside of a vehicle or a building can not be seen.

In the present invention, a modified acrylate-based copolymer and an isocyanate-containing pressure-sensitive adhesive may be used for forming the adhesive layer 120.

The modified acrylate-based copolymer plays a role of adhesion and durability to the external environment as a subject.

For example, the modified acrylate-based copolymer may be a trade name OX-100 (manufactured by LG Hausys).

In the present invention, the adhesive layer 120 contains 0.1 to 10 parts by weight of isocyanate relative to 100 parts by weight of the modified acrylate-based copolymer. Isocyanates participate in the curing reaction of the subject and serve as a bridge to the subject.

When the isocyanate is contained in an amount of less than 0.1 part by weight based on 100 parts by weight of the modified acrylate-based copolymer, a sufficient curing reaction and a crosslinked product can not be secured, and a large amount of steam is generated due to retraction of the pressure-sensitive adhesive. On the other hand, if the isocyanate is contained in an amount exceeding 10 parts by weight based on 100 parts by weight of the modified acrylate-based copolymer, the curing reaction may occur excessively, resulting in a decrease in the adhesive strength, resulting in deterioration of the physical properties to be used.

For example, the isocyanate may use the trade name MHG-80B (manufactured by Asahi-Kasei).

Further, the adhesive layer 120 may further include a heat shield material so that the heat shielding effect of the heat shielding adhesive film 100 can be maximized.

In the present invention, the heat-shielding material of the adhesive layer 120 is preferably contained in an amount of 10 parts by weight or less based on 100 parts by weight of the modified acrylate-based copolymer. Preferably, the heat-sensitive adhesive layer 120 reflects infrared rays, Thereby further suppressing the temperature rise in the adherend surface when the film 100 is adhered to the adherend surface.

If the heat-shielding material of the adhesive layer 120 is contained in an amount of more than 10 parts by weight based on 100 parts by weight of the modified acrylate-based copolymer, the adhesive strength of the adhesive layer 120 may be lowered.

The heat-shielding material of the adhesive layer 120 may be the same as the heat-shielding material of the heat-shielding film 110 described above, and a duplicate description thereof will be omitted.

In the present invention, the pressure-sensitive adhesive layer 120 was formed using a modified acrylate copolymer and an isocyanate-containing pressure-sensitive adhesive. As a result, the above-mentioned heat insulating function, required adhesive strength, stain resistance and hiding power were obtained.

In addition, the adhesive layer 120 may further include additives such as a curing accelerator, a plasticizer, a dispersant, a surfactant, an antistatic agent, a defoaming agent, and a leveling agent in order to improve the physical properties of the pressure sensitive adhesive. More than one species can be mixed.

The adhesive layer 120 may be used for decorating a window or the like when the adhesive layer 120 is further formed of pearl or colored.

In this case, the pearl of the adhesive layer 120 is preferably added in an amount of 20 parts by weight or less based on 100 parts by weight of the modified acrylate-based copolymer.

If the adhesive layer 120 contains more than 20 parts by weight of pearl per 100 parts by weight of the modified acrylate-based copolymer, the adhesive strength may be lowered.

The release film 130 is located on one side of the adhesive layer 120 (the upper side with reference to FIG. 1) to protect the adhesive layer 120.

As the release film 130, various films such as a polyethylene terephthalate (PET) film can be used. More preferably, a release PET film having a releasing force of about 10 g / in is proposed so as to facilitate release .

The heat shielding adhesive film 100 according to the embodiment of the present invention enhances the reflectance of infrared rays by using the heat shielding material as the heat shielding film 110 and the adhesive layer 120 so as to prevent the conduction to the room The convection can be minimized and excellent heat-shielding characteristics can be secured. In addition, since it is applied in the form of a film, it can be easily installed, and since the adhesive layer 120 having the stain resistance characteristic is used, detachment and replacement are easy after the application.

In addition, it can be used as a film itself, can also be printed on the surface of a film to be advertised, and an emboss is formed on the surface, or a pearl is contained in the heat shielding film 110 or the adhesive layer 120, And has the advantage of having a decoration function.

In the meantime, the present invention has been described only for the heat-shielding adhesive film using the heat-resistant resin composition for convenience of explanation. However, the heat-resistant resin composition can be used for manufacturing other heat- It is possible to manufacture a heat shield structure having excellent heat shielding characteristics.

Hereinafter, a method of manufacturing a heat-sensitive adhesive film according to an embodiment of the present invention will be briefly described.

2 is a flowchart illustrating a method of manufacturing a heat-sensitive adhesive film according to an embodiment of the present invention.

Referring to FIG. 2, a method of manufacturing a heat-sensitive adhesive film according to an embodiment of the present invention is as follows.

First, a heat-shrinkable film having an infrared reflectance of 70% or more on an infrared wavelength band (780 nm to 2500 nm) is prepared (S210).

Such a heat-shrinkable film may be prepared by including 100 parts by weight of a PVC resin, 10 to 60 parts by weight of a heat-resistant raw material, 10 to 50 parts by weight of a plasticizer, 3 to 5 parts by weight of a heat stabilizer, and 0.5 to 2 parts by weight of a UV stabilizer.

The heat shielding film may be formed by additionally or coloring 50 parts by weight or less of pearl with respect to 100 parts by weight of the PVC resin so as to be usable for decoration. Further, the heat-shrinkable film may contain transparent or white or colored heat-resistant materials to realize a transparent or monochromatic adhesive film.

Further, the heat shield film may include an emboss on one surface exposed to be used for decoration.

Next, a release film having an adhesive layer formed on the heat shielding film is prepared (S220).

The pressure-sensitive adhesive layer can be formed by applying, drying and curing a pressure-sensitive adhesive containing 100 parts by weight of a modified acrylate copolymer and 0.1 to 10 parts by weight of an isocyanate on the upper surface of a release film such as a release PET film having a releasing force of about 10 g / have.

The pressure-sensitive adhesive layer may further contain 10 parts by weight or less of heat-shielding raw material per 100 parts by weight of the modified acrylate-based copolymer.

The adhesive layer may be formed by further containing or coloring 20 parts by weight or less of pearl with respect to 100 parts by weight of the modified acrylate-based copolymer so as to be usable for decoration.

In addition, the adhesive layer can be made of a transparent or monochromatic adhesive film by injecting a heat-shielding material into a transparent, white or colored interior.

Difference After the film and the release film are provided, the release film is laminated on the heat-shielding film so that the adhesive layer is positioned between one side of the heat-shielding film and one side of the release film (S230).

3 is a flowchart showing a method of manufacturing a heat-sensitive adhesive film according to another embodiment of the present invention.

3, the adhesive layer is directly coated on the heat-shrinkable film, and the manufacturing method shown in the figure is as follows.

First, a heat-shrinkable film having an infrared reflectance of 70% or more on an infrared wavelength band (780 nm to 2500 nm) is prepared (S310).

The step of providing the heat shielding film may be the same as that described above with reference to FIG. 2, and a duplicate description thereof will be omitted.

Next, an adhesive layer is formed on the heat shielding film (S320).

The adhesive layer can be formed by applying, drying and curing a pressure-sensitive adhesive containing 100 parts by weight of a modified acrylate copolymer and 0.1 to 10 parts by weight of an isocyanate on the upper surface of the heat-shrinkable film.

2 except that the adhesive layer is directly formed on the upper surface of the heat-shrinkable film, so that a duplicate description thereof will be omitted.

Next, in order to protect the adhesive layer, a release film is laminated on the upper surface (S330).

The release film may be a release PET film having a releasing force of about 10 g / in.

Example

Hereinafter, the configuration and operation of the present invention will be described in more detail with reference to embodiments of the present invention. It should be understood, however, that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

The contents not described here are sufficiently technically inferior to those skilled in the art, and a description thereof will be omitted.

Example 1

From below , 60 parts by weight of a trade name R104 (manufactured by Dupont, a heat source for a titanium dioxide material), 30 parts by weight of a trade name DOP (manufactured by LG Chemical Co., Ltd.) as a plasticizer, 100 parts by weight of an epoxy resin 5 parts by weight of a heat stabilizer) and 5 parts by weight of UV531 (ultraviolet light stabilizer) Heat film, , 5 parts by weight of a product name MHG-80B (manufactured by Asahi-Kasei, isocyanate) was added to 100 parts by weight of a trade name OX-100 (manufactured by LG Hausys, modified acrylate series) A pressure-sensitive adhesive layer containing a pressure-sensitive adhesive and A specimen of a release PET film with a release force of 10 g / in was prepared and attached to a 0.8 mm thick iron plate coated with white.

Thereafter, infrared rays were irradiated onto the specimens attached to the iron plate with an IR (infrared) lamp of 175 W and 230 V, and then the temperature of the rear side of the iron plate located on the opposite side of the specimen was measured at intervals of 1 minute, The temperature change widths measured with an infrared thermometer and elapsed time are shown in Table 1 and FIG. 4 below. The infrared reflectance of the surface of the specimen was measured in an infrared wavelength range of 780 to 2500 nm by using a spectrophotometer one hour after the irradiation of infrared rays, and the result is shown in FIG.

Example 2

Except that the pressure-sensitive adhesive layer further contained 10 parts by weight of R104 (a heat-shading material of a titanium dioxide-based material manufactured by Dupont) relative to 100 parts by weight of OX-100 (manufactured by LG Houssis, modified acrylate series) , And the results are shown in Table 1.

Example 3

Except that the pressure-sensitive adhesive layer further contained 15 parts by weight of R104 (a heat-shading raw material of a titanium dioxide-based material manufactured by Dupont) relative to 100 parts by weight of OX-100 (manufactured by LG Houssis, modified acrylate series) , And the results are shown in Table 1.

Comparative Example

On the market The results are shown in Table 1, except that a white adhesive film (product name: DPM, manufactured by LG Hausys) was used.

FIG. 4 is a graph showing the change in temperature of the rear side of the steel plate opposite to the specimen of the specimen-bonded iron plate according to the infrared irradiation in Example 1 and Comparative Example, and FIG. 5 is a graph showing the infrared And the infrared reflectance of the surface of the specimen is measured.

 [Table 1]

Referring to Table 1 and FIG. 4, when the films according to Examples 1 to 3 and Comparative Examples were irradiated with infrared rays for 1 hour, the cases of Examples 1 to 3 were compared with Comparative Examples, The average temperature variation width? T in the temperature range of about 16 占 폚, 22 占 폚 and 25 占 폚 was lower.

That is, in each of Examples 1 to 3, the temperature at the back surface of the specimen-attached steel plate was lower than that of Comparative Example, and in Examples 2 to 3 containing the heat-resistant material in the adhesive layer, The temperature at the back of the bonded steel plate was lower.

In Example 3, on the other hand, the temperature variation width? T of the back surface of the specimen-attached steel sheet at each elapsed time was about 3 ° C lower than that of Example 2, whereas peeling of the specimen and the steel sheet was observed at a part thereof, It was not suitable as a heat sensitive adhesive film.

As shown in FIG. 5, the infrared reflectance of the surface of the specimen was measured at an infrared wavelength band after irradiating the film according to Example 1 and the comparative example for 1 hour. As a result, , The infrared reflectance on the surface of the specimen was much higher than when the white adhesive film (DPM) according to the comparative example was attached.

That is, in the case of the white adhesive film (DPM) according to the comparative example, the infrared reflectance at the surface decreased from 80% to 15% as the wavelength became larger, but in the case of the heat-shrinkable adhesive film according to Example 1, 70% and 50%, respectively, but the average reflectance was 80% or more.

As a result, in Examples 1 to 3 with the heat-shielding adhesive film, the infrared reflectance at the surface of the specimen was increased, and the heat shielding effect of about 16 ° C., 22 ° C. and 25 ° C. It can be inferred that this is an implementation.

In sum, when a heat-sensitive adhesive film containing a heat-resistant material is adhered to a heat-sensitive adhesive film, the infrared reflectance on the surface of the heat-sensitive adhesive film is increased to suppress the temperature rise in the adherend surface. Furthermore, when a heat-sensitive adhesive film containing heat-resistant raw materials is adhered to the adherend surface in an amount of not more than 10 parts by weight based on 100 parts by weight of the modified acrylate copolymer in the adhesive layer as well as the heat-sensitive adhesive film, It is possible to further enhance the effect of suppressing the temperature rise in the adhered surface room.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. . Accordingly, the true scope of the present invention should be determined by the following claims.

100: heat-sensitive adhesive film 110: heat-shrinkable film
120: adhesive layer 130: release film

Claims (12)

Heat shielding film; And
And an adhesive layer formed on the heat-shrinkable film,
Wherein the heat-shrinkable film comprises 100 parts by weight of a polyvinyl chloride (PVC) resin, 20 to 60 parts by weight of a heat-resistant raw material, 10 to 50 parts by weight of a plasticizer, 3 to 5 parts by weight of a heat stabilizer and 0.5 to 2 parts by weight of a UV stabilizer , And the pressure-sensitive adhesive layer comprises 0.1 to 10 parts by weight of isocyanate relative to 100 parts by weight of the modified acrylate-based copolymer.
The method according to claim 1,
The heat-
Wherein the heat-shrinkable film comprises at least one of a titanium dioxide-based material, a silica-based material, a glass fiber-based material, a diatomaceous earth-based material, a polyethylene-based nonwoven fabric, a polypropylene-based nonwoven fabric, a polyurethane-based nonwoven fabric and a calcium oxide-based material.
delete The method according to claim 1,
The adhesive layer
Wherein the heat-sensitive adhesive film further comprises a heat-resistant raw material in an amount of 10 parts by weight or less based on 100 parts by weight of the modified acrylate-based copolymer.
5. The method of claim 4,
The heat-shielding material of the adhesive layer
Wherein the heat-shrinkable film comprises at least one of a titanium dioxide-based material, a silica-based material, a glass fiber-based material, a diatomaceous earth-based material, a polyethylene-based nonwoven fabric, a polypropylene-based nonwoven fabric, a polyurethane-based nonwoven fabric and a calcium oxide-based material.
The method according to claim 1,
The heat-shrinkable pressure-sensitive adhesive film
Wherein the infrared ray reflectance on the surface of the heat-shrinkable film in an infrared wavelength band of 780 to 2500 nm is 70% or more on average.
The method according to claim 1,
The heat-
Wherein an emboss is further formed on a surface of the work to be exposed.
The method according to claim 1,
The heat-
Characterized in that it further comprises pearl for decoration in an amount of 50 parts by weight or less based on 100 parts by weight of the polyvinyl chloride resin.
The method according to claim 1,
The adhesive layer
Further comprising a pearl for decoration in an amount of 20 parts by weight or less based on 100 parts by weight of the modified acrylate-based copolymer.
The method according to claim 1,
On the pressure-sensitive adhesive layer
Further comprising a release film for protecting the adhesive layer.
delete delete

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