KR101870017B1 - Vacuum insulating complex panel - Google Patents

Abstract

A vacuum thermal insulation composite panel according to the present invention includes a core member, a vacuum insulation member including a sealing member surrounding the core member, and a reinforcing panel coupled to the vacuum insulation member in a lamination manner, A blocking layer laminated on the surface of the fusion layer; a protection layer laminated on a surface of the blocking layer; and a flocking portion attached to a surface of the protection layer.

Description

[0001] Vacuum insulating complex panel [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum insulation composite panel improved in thermal insulation and impact resistance so that it can be used as a thermal insulation member for construction, and more particularly to a vacuum insulation composite panel in which a vacuum insulating material flocked to the surface and a reinforcing panel are integrally combined. will be.

Vacuum insulation material is a material that shows the excellent heat insulation performance more than five times compared with existing oil / inorganic insulation materials by blocking the convection inside the insulation by vacuuming the inside of the insulation.

The vacuum insulator includes a core material, a sealing member of a multilayer film structure surrounding the core member, and a getter for removing a gas component flowing into the sealing member. Among them, the sealing member is an indispensable element for maintaining the vacuum degree of the vacuum insulation material, and in particular, it plays a role of maintaining the degree of vacuum inside the vacuum insulation material, and the air permeability thereof must be low. If the sealing member is made of a highly breathable material, external gas and moisture may be introduced during the long-term use of the product, and the vacuum degree may be lowered in the process, thereby deteriorating the heat insulation property. In addition, the sealing member must be made of a material having a certain level of ductility so that it can be easily contracted due to the formation of vacuum pressure therein. When the sealing member is flexible, the sealing member is low in impact resistance, There is a disadvantage.

That is, the conventional vacuum insulation material is suitable only for a thermal insulation member for a refrigerator which has a relatively short life span of 10 to 15 years and is not required to have a high impact resistance, and is suitable for construction requiring a long durability over 30 years and high impact resistance It is not suitable as a heat insulating member.

KR 10-2012-0033168 A

The present invention provides a vacuum thermal insulation composite panel having excellent surface strength, excellent impact resistance, excellent long-term durability, and significantly improved rupture strength and being applicable to construction.

A vacuum thermal insulation composite panel according to the present invention includes: a vacuum insulation panel including a core material and a sealing member surrounding the core material; And a reinforcing panel bonded to the vacuum insulating material in a laminated manner, wherein the sealing member comprises a fusion layer laminated on the surface of the core material, a barrier layer laminated on the surface of the fusion layer, A laminated protective layer, and a flocked portion attached to the surface of the protective layer.

In one embodiment of the present invention, the reinforcing panel can be made of metal.

In one embodiment of the present invention, the reinforcing panel may be composed of a first reinforcing panel and a second reinforcing panel which are integrally attached to the bottom surface and the top surface of the vacuum insulating material, respectively.

In an embodiment of the present invention, the first reinforcing panel is a building interior material, and the second reinforcing panel is applicable as an exterior covering material.

In an embodiment of the present invention, the first reinforcing panel is formed in a flat plate shape, and the second reinforcing panel is covered with the upper surface and the side surface of the vacuum insulating material so that an edge portion is laminated on the upper surface of the first reinforcing panel. have.

In one embodiment of the present invention, the flocking portion is formed by a process of attaching at least one material selected from the group consisting of nylon, polyester, cloth, cotton powder, leather powder and diamond powder to the surface of the protective layer using the electrostatic principle .

In addition, the material used for the flocking part may have a length of 0.01 to 100 mm and a thickness of 0.01 to 1000 denier.

INDUSTRIAL APPLICABILITY The vacuum heat-insulating composite panel according to the present invention has excellent surface strength, excellent impact resistance, long-term durability, and significantly improved rupture strength.

1 is a perspective view of a vacuum insulation material included in a vacuum insulation composite panel according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view along the AA axis in FIG. 1; FIG.
3 is an exploded perspective view of a vacuum heat-insulating composite panel according to an embodiment of the present invention.
4 is an exploded perspective view of a vacuum heat-insulating composite panel according to another embodiment of the present invention.
5 and 6 are an exploded perspective view and a cross-sectional view of a vacuum heat-insulating composite panel according to another embodiment of the present invention.

Hereinafter, a vacuum thermal insulation composite panel according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 and FIG. 2 are a perspective view and a sectional view of a vacuum insulation panel included in a vacuum insulation panel according to the present invention, and FIG. 3 is an exploded perspective view of a vacuum insulation panel according to the present invention.

The vacuum insulation composite panel according to the present invention comprises a vacuum insulation material composed of a core material, a sealing member and a gas adsorbent, and elements configured to enhance the heat insulating function or to enhance impact resistance of the vacuum insulation material. Elements configured to enhance impact resistance include, but are not limited to, a reinforcing panel or a flocked portion as described below, provided that they can enhance the heat insulation or impact resistance of the vacuum insulation. The vacuum insulation composite panel according to the present invention can be utilized as a thermal insulation member for a building since it is manufactured to have higher heat insulation and higher impact resistance than conventional vacuum insulation. 1 to 3, a vacuum thermal insulation composite panel according to the present invention includes a vacuum insulation panel 100 including a core 110 and a sealing member 120 surrounding the core member 110, The seal member 120 includes a fusion layer 122 laminated on the surface of the core member 110 and a barrier layer 122 laminated on the surface of the fusion layer 122. [ A protective layer 126 stacked on the surface of the barrier layer 124 and a flocking portion 128 adhered to the surface of the protective layer 126.

The vacuum insulator 100 is excellent in heat insulation against volume, but has a low impact resistance, that is, it may be damaged even in a small impact, which is disadvantageous in that it is difficult to independently use a heat insulating member for construction requiring a large structural strength. However, since the reinforcing panel 200 is made of a material having a high surface strength and a high rupture strength such as metal, the vacuum insulation panel 100 and the reinforcing panel 200 are integrally joined together like the vacuum insulation composite panel according to the present invention. It is possible to have both a high thermal insulation property and a high impact resistance, which is advantageous for use as a heat insulating member for construction.

The combination of the reinforcing panel 200 and the vacuum insulating material 100 may be performed using an adhesive commonly used in the art, for example, a urethane adhesive. The bonding method is not particularly limited, and gravure, direct, reverse, dry lamination, or the like can be used.

Hereinafter, the vacuum insulator 100 included in the vacuum insulation composite panel according to the present invention will be described in detail.

The vacuum insulation panel 100 included in the present invention is broadly divided into a core 110 and a sealing member 120. The sealing member 120 includes a fusion layer 122 laminated on the surface of the core 110, A blocking layer 124 stacked on the surface of the fused layer 122, a protective layer 126 stacked on the surface of the blocking layer 124, and a flocking portion 128 attached to the protective layer 126 .

Glass wool, fumed silica, or urethane foam may be used as the core 110 of the vacuum insulation panel 100 according to an embodiment of the present invention. The vacuum insulator 100 may further include a gas adsorbent for removing gas flowing into the sealing member 120. The gas adsorbent may be CaO (calcium oxide), metal powder, a mixture of calcium oxide and metal powder, silica gel or zeolite, but is not limited thereto.

The protective layer 126 of the sealing member 120 protects the barrier layer 124 as an outermost layer and prevents the vacuum insulation material 100 from being damaged from external impact or scratches. The protective layer 126 may be composed of one or more layers and each layer may be formed of a material selected from the group consisting of nylon, polyethylene terephthalate (PET), inorganic-vapor deposited polyethylene terephthalate, oriented polypropylene (OPP), ethylene vinyl alcohol Inorganic-vapor-deposited polyvinyl alcohol (PVOH), omocer (ORMOCER), and inorganic-deposited omocer (ORMOCER). The inorganic material used for the deposition may be aluminum (Al), aluminum oxide (AlOx), silicon (Si) or silicon oxide (SiOx), and the deposition thickness may be 100 to 2000 Å, specifically 200 to 1000 Å, It is not. The thickness of the protective layer 126 may be a thickness typically applied to the vacuum insulation material 100, for example, 5 to 30 μm, specifically 10 to 25 μm, without particular limitation.

The blocking layer 124 serves to prevent the vacuum insulator 100 from being vented. As such a barrier layer 124, an inorganic-vapor deposition film, an aluminum thin film or an ORMOCER may be used, and the inorganic-vapor deposition film may be an inorganic-vapor deposited polyethylene terephthalate, an inorganic vapor-deposited ethylene vinyl alcohol, Alcohol (PVOH) and inorganic-deposition oleocer (ORMOCER). The inorganic material used for the deposition may be aluminum (Al), aluminum oxide (AlOx), silicon (Si) or silicon oxide (SiOx), and the deposition thickness may be 100 to 2000 Å, specifically 200 to 1000 Å, It is not. In addition, the inorganic-vapor-deposited film may be provided in accordance with at least one of the cost and the desired characteristics of the final product. The thickness of the barrier layer 124 may be a thickness typically applied to the vacuum insulation material 100, for example, 5 to 30 μm, specifically 10 to 25 μm, without particular limitation.

When the sealing member 120 is applied to the vacuum insulator 100 as a sheath material, the fusing layer 122 can be thermally fused between the sheath members and is in close contact with the core member 110, to be. The material of the fusing layer 122 is not particularly limited as long as it is commonly used in the vacuum insulator 100. Specifically, a linear low density polyethylene (LLPDE) film or a cast polypropylene (CPP) film may be used. The thickness of the fusing layer 122 may be a thickness typically applied to the vacuum insulation material 100, for example, 20 to 100 mu m, specifically 30 to 75 mu m, without any particular limitation.

In one embodiment of the present invention, the sealing member 120 may further comprise additional layers that impart specific properties as needed. Further, each interlaminar bond in the multi-layer structure can be carried out using an adhesive commonly used in the art, for example, a urethane adhesive. There is no particular limitation on the bonding method, and the vacuum insulator 100 may be of a type commonly used, for example, gravure, direct, reverse, dry lamination or the like.

Meanwhile, the flocking part 128 may be formed by a process of attaching one or more materials selected from the group consisting of nylon, polyester, cloth, cotton powder, leather powder and diamond powder to the surface of the protective layer 126 using the electrostatic principle As shown in FIG. In one embodiment, an adhesive 127 such as acryl and urethane is applied to the surface of the protective layer 126, and then the material to be applied is ejected while the electrostatic field is applied, Followed by drying at 50 to 200 DEG C for 0.1 to 30 minutes. At this time, the material used for the flocking part 128 may have a length of 0.01 to 100 mm and a thickness of 0.01 to 1000 denier.

If the flocking portion 128 is formed on the surface of the protective layer 126 as described above, the surface strength is increased to lower the product defect rate due to the external impact, and various colors can be realized. .

4 is an exploded perspective view of a vacuum heat-insulating composite panel according to another embodiment of the present invention.

As shown in FIG. 3, the vacuum thermal insulation composite panel according to the present invention may have one reinforcing panel 200 integrally attached to one vacuum insulating material 100, and one vacuum The reinforcing panel 200 may be provided on both sides of the heat insulating material 100. That is, the reinforcing panel 200 may include a first reinforcing panel 210 and a second reinforcing panel 220, which are integrally attached to the bottom and top surfaces of the vacuum insulating material 100, respectively.

If the first reinforcing panel 210 and the second reinforcing panel 220 are provided on both sides of the single vacuum insulator 100, the rupture strength is further improved, and the structure can be used for a structure requiring a large structural strength .

Further, when the first reinforcing panel 210 and the second reinforcing panel 220 are attached to both sides of the vacuum insulating material 100, the vacuum insulating composite panel can be used as a wall without a separate finishing process. For example, when the first reinforcing panel 210 is made of a building interior material and the second reinforcing panel 220 is made of a building exterior material, the wall of the building structure is completed only by assembling the vacuum insulation composite panel according to the present invention The construction air can be remarkably shortened.

5 and 6 are an exploded perspective view and a cross-sectional view of a vacuum heat-insulating composite panel according to another embodiment of the present invention.

When the first reinforcing panel 210 and the second reinforcing panel 220 attached to both sides of the vacuum insulating material 100 are formed in a flat plate shape, the bottom surface and the top surface of the vacuum insulating material 100 are connected to the first reinforcing panel 210 The side edge of the vacuum insulating material 100 may be attached to the first reinforcing panel 210 or the second reinforcing panel 220 so as not to be damaged or corroded because the second reinforcing panel 220 and the second reinforcing panel 220 are not exposed to the outside. Failure to do so may result in damage or corrosion.

Therefore, the first reinforcing panel 210 and the second reinforcing panel 220 may be configured to enclose the outer surface of one vacuum insulating material 100. 5 and 6, the first reinforcing panel 210 is formed in a flat plate shape having a larger area than the vacuum insulating material 100, The first reinforcing panel 210 and the second reinforcing panel 210 may be combined with each other to cover the upper surface and the side surface of the first reinforcing panel 100,

When the second reinforcing panel 220 is formed in a cap shape, the entire outer surface of the vacuum insulating material 100 is not exposed to the outside, so that breakage and corrosion of the vacuum insulating material 100 can be prevented It is possible to prevent a phenomenon that air is introduced into the vacuum insulating material 100 and the degree of vacuum is released.

Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples. It should be apparent to those skilled in the art that these examples and comparative examples are intended to illustrate the present invention only, and the scope of the present invention is not limited thereto.

Example  1 to 2:

Nylon was flocked to the surface of the protective layer of 12T (12 mm in thickness) vacuum insulation material having a core material made of glass wool or fumed silica, and a metal panel was adhered on one side to prepare a vacuum insulation composite panel.

Comparative Example  1 to 2:

In Comparative Example 1, a metal panel was not applied and no flocking treatment was performed, and the remaining vacuum insulator composition was set the same as in Example 1. [

In Comparative Example 2, a vacuum insulator was manufactured in the same manner as in Example 2, except that a metal panel was not used.

The vacuum insulation composite panel and the vacuum insulation material itself were evaluated as follows. The results are shown in Table 1 below.

- Product defect rate (%): Evaluation according to occurrence of pin hole due to external impact

- Rupture strength (N): Strength when the jacket is punctured by applying a local pressure to the jacket with a durability test jig

- Durability Change with time (1): Change in thermal conductivity after leaving 50 days at 100 ℃ (= 10 years durability)

- Durability change with time (2): Change in thermal conductivity after leaving 150 days at 100 ℃ (= 30 years durability)

Example 1 Example 2 Comparative Example 1 Comparative Example 2

Composite panel
14T (mm) Reinforced panel 1T (mm) Metal panel Metal panel Do not apply Do not apply Vacuum insulation
12T (mm) Glass wool
Use core material Fumed silica
Use core material Glass wool
Use core material Fumed silica
Use core material The flocking portion
1T (mm) nylon
Flocking nylon
Flocking Do not apply nylon
Flocking Product defect rate Less than 1% Less than 1% 5% or more Less than 5% Tear strength (N) 1630 1630 50 70 Durability Change over time (1) (mW / mK)
(100 ℃, 50 days left = 10 years durability) 1.5 1.9 2.6 2.3 Durability Change over time (2) (mW / mK)
(100 ℃, 150 days left = 30 years durability) 3.1 △ 3.7 4.7 4.3

As can be seen from the above Table 1, the vacuum insulation composite panels of Examples 1 and 2 according to the present invention had lower impact resistance than the vacuum insulation materials of Comparative Examples 1 and 2 without reinforcing panels, , The rate of increase of the thermal conductivity according to the long-term use was much lower, which was also excellent in long-term durability.

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 or scope of the invention. Do. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Accordingly, the actual scope of the invention is defined by the appended claims and their equivalents.

100: vacuum insulation material 110: core material
120: sealing member 122: fusing layer
124: barrier layer 126: protective layer
128: Floating section 200: Reinforcing panel

Claims (14)

A vacuum insulator comprising a core material and a sealing member surrounding the core material; And a reinforcing panel coupled to the vacuum insulation material in a laminated manner,
Wherein the sealing member comprises a fusion layer laminated on the surface of the core, a barrier layer laminated on the surface of the fusion layer, a protective layer laminated on the surface of the barrier layer, And a flocking portion attached to the surface,
Wherein the reinforcing panel comprises a first reinforcing panel and a second reinforcing panel integrally attached to the bottom and top surfaces of the vacuum insulation,
Wherein the first reinforcing panel is a building interior material, and the second reinforcing panel is a building exterior material. The method according to claim 1,
Wherein the reinforcing panel is made of metal. delete delete The method according to claim 1,
Wherein the first reinforcing panel is formed in a flat plate shape and the second reinforcing panel is covered on the upper surface and side surfaces of the vacuum insulating material so that the edge portions are laminated on the upper surface of the first reinforcing panel. The method according to claim 1,
Wherein the flocking portion is formed through a process of attaching at least one material selected from the group consisting of nylon, polyester, human hair, cotton powder, leather powder and diamond powder to the surface of the protective layer using an electrostatic principle. The method according to claim 6,
Wherein the material used for the flocking part has a length of 0.01 to 100 mm and a thickness of 0.01 to 1000 denier. The method according to claim 1,
Wherein the core material is made of glass wool or fumed silica. The method according to claim 1,
Wherein the protective layer is comprised of one or more layers and each layer is selected from the group consisting of nylon, polyethylene terephthalate (PET), inorganic-vapor deposited polyethylene terephthalate, oriented polypropylene (OPP), ethylene vinyl alcohol (EVOH) A vacuum insulation composite panel selected from the group consisting of alcohol, polyvinyl alcohol (PVOH), inorganic-vapor deposition polyvinyl alcohol (PVOH), ORMOCER and inorganic-deposition OMOSER. 10. The method of claim 9,
Wherein the inorganic material is aluminum (Al), aluminum oxide (AlOx), silicon (Si) or silicon oxide (SiOx). The method according to claim 1,
Wherein the barrier layer is an inorganic-deposited film, an aluminum foil or an ORMOCER. 12. The method of claim 11,
Wherein the inorganic-vapor deposition film is at least one selected from the group consisting of inorganic-vapor-deposited polyethylene terephthalate, inorganic-vapor-grown ethylene vinyl alcohol, inorganic-vapor-deposited polyvinyl alcohol (PVOH) and inorganic- . 13. The method of claim 12,
Wherein the inorganic material is aluminum (Al), aluminum oxide (AlOx), silicon (Si) or silicon oxide (SiOx). The method according to claim 1,
Wherein the fusing layer is a linear low density polyethylene (LLPDE) film or a cast polypropylene (CPP) film.

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