KR20200002465U - Heat-reflective insulating material - Google Patents

Abstract

According to the present invention, a heat-reflective insulating material formed by stacking a plurality of basic structures consisting of an insulating foam manufactured using a resin and a heat reflective film attached to the upper and lower surfaces of the insulating foam. Is provided. In each layer, a plurality of independent air layers are formed by the walls of the holes of the film and the insulating foam, and when viewed from a plane with the thickness of the insulating material in the vertical direction, in the longitudinal direction of the insulating material and in the width direction It is configured to alternately provide cutouts at a predetermined depth in the thickness direction of the insulating material every predetermined length, so that the insulating material can be folded.

Description

Heat-reflective insulation {HEAT-REFLECTIVE INSULATING MATERIAL}

The present invention relates to a heat reflective heat insulator, and more specifically, to a heat reflective heat insulator configured to reduce the volume to be packaged/transported and to prevent deformation during packaging.

The largest portion of the energy consumption of a building is heat loss through the exterior wall of the building. Therefore, in order to save energy in a building, proper design and construction are required to increase the insulation performance of the exterior wall of the building.

Insulation materials such as styrofoam, urethane foam, glass wool, rock wool, and polyester foam are mainly used to increase the insulation performance of the exterior wall of a building. These insulation materials are mainly used in resistance-type insulation methods that minimize heat transfer by conduction and convection. In fact, a considerable degree of heat loss can be prevented by using a plate-shaped insulating material such as a conventional styrofoam.

However, in a building, heat transferred through the outer wall is transferred not only by conduction and convection, but also by radiation. Heat transfer in a building differs by season and by parts of the building, but it can be seen that heat transfer by radiation has a significant effect. Therefore, in order to prevent heat transfer due to radiation, a member such as an aluminum thin plate capable of reflecting heat transferred by radiation is attached to the insulating material such as styrofoam described above. For example, the patent document discloses a multi-layered heat insulator in which a reflective layer in which an aluminum-treated surface of a conventional foam insulation material such as polyethylene foam or polyester foam of a certain thickness is repeatedly formed is formed.

However, the existing heat-reflecting insulation is only a product in which an insulation function for radiant heat is added by bonding surface films such as aluminum on both sides of a general insulation material, and when it is installed closely without an air layer, it cannot exhibit the function of blocking radiation. It is difficult to expect satisfactory level of insulation in buildings with various construction structures.

On the other hand, conventional reflective insulation materials, including such a multilayered insulation material, are rolled and transported in a cylindrical shape in factories. Conventional reflective insulation materials have a thickness of 40 mm or less in general. However, as the heat insulation performance becomes important, those having a thickness of 50 mm or more are used, and depending on the situation, those having a thickness of 80 to 100 mm may be used. In this way, as the thickness of the insulating material increases, problems occur during transport to the construction site.

That is, for example, when transporting an insulating material having a thickness of 80 mm, a width of 1,000 mm, and a length of 7.5 mm, when wrapped in a cylindrical shape, it becomes a cylindrical shape having a height of 1,000 mm and an outer diameter of 890 mm (see the right side of FIG. 1). In contrast, when the product is folded every 1,500 mm in length, it becomes a rectangular parallelepiped shape with a width of 1,000 mm, a length of 1,500 mm, and a height of 400 mm (see the left side of Fig. 1), and the width is narrowed compared to the cylindrical shape, leading to a narrow construction site. It is easy to move, and, for example, when loading on a truck, more insulating materials can be loaded, so that transportation costs and the like can be reduced. However, since it is practically impossible to fold a heat insulating material having a thickness of 80 mm every predetermined length, a separate countermeasure is required.

Publication Patent No. 10-2001-91178

The present invention is to solve the problems of the prior art, one object of which is to provide a heat-reflecting heat insulator of a multilayer structure in which heat insulation is revised by providing an air layer therein.

Another object of the present invention is to provide a multi-layered heat-reflecting insulator so that it can be stored/transported by folding it in an approximately square shape when viewed from a plane, rather than storing/transporting the heat-reflecting insulator in a cylindrical shape. .

In order to achieve the above object, according to the present invention, a plurality of basic structures consisting of an insulating foam formed in the form of a porous mesh and manufactured using a resin, and a heat reflective film attached to the upper and lower surfaces of the insulating foam A heat reflective insulating material is provided which is constructed by being laminated. In each layer, a plurality of independent air layers are formed by the walls of the holes of the film and the insulating foam, and when viewed from a plane with the thickness of the insulating material in the vertical direction, in the longitudinal direction of the insulating material and in the width direction It is configured to alternately provide cutouts at a predetermined depth in the thickness direction of the insulating material every predetermined length, so that the insulating material can be folded.

According to another aspect of the present invention, with respect to the basic structure consisting of a heat-reflective film formed in the form of a porous net and made of a resin and a heat-reflective film attached to the top and bottom of the heat-insulating foam, in the form of a porous net. There is provided a heat-reflective heat insulator formed by laminating a plurality of deformable structures comprising a heat-insulating foam formed and manufactured using a resin and a heat-reflective film attached to an upper surface of the heat-insulating foam. In each layer, a plurality of independent air layers are formed by the walls of the holes of the film and the insulating foam, and when viewed from a plane with the thickness of the insulating material in the vertical direction, in the longitudinal direction of the insulating material and in the width direction It is configured to alternately provide cutouts at a predetermined depth in the thickness direction of the insulating material every predetermined length, so that the insulating material can be folded.

In one embodiment, the basic structure constituting each layer may be stacked so that a wall partitioning a hole of the insulating foam is offset from each other in a vertical direction with a wall of the insulating foam of another basic structure of the upper and lower layers.

In one embodiment, the cut-out portion is formed by cutting the insulating material from the lower surface of the insulating material toward the upper surface when the insulating material is viewed in a plan view, and a portion subsequent to the first cut portion by a predetermined length. The second cutout portions formed by cutting the insulating material from the upper surface to the lower surface of the insulating material may be alternately formed.

In one embodiment, the depth of the cutout in the thickness direction of the insulating material may be designed to be more than half the thickness of the insulating material.

In one embodiment, a polyethylene resin may be used as the heat insulating foam of the heat insulating material.

In one embodiment, the hole of the insulating foam may be circular, square, or honeycomb shape.

The heat-reflecting heat insulator of a multilayer structure of the present invention reflects heat by an inner film, and an independent air layer is provided between the films to act as a heat shield, thereby reversing heat insulation performance. In addition, by alternately providing cutouts at a predetermined depth in the thickness direction of the insulating material in the longitudinal direction and in the width direction of the insulating material, the thick insulating material can be folded in a tetrahedral shape rather than a cylindrical shape. Thereby, compared to storage/transport by rolling it in a cylindrical shape, more insulation materials can be loaded in the same space and can be easily transported to a narrow construction space, as well as continuous construction at a large-area construction site. , It can improve workability.

1 is a view schematically showing a plan view of a case where a heat-reflecting insulating material of a conventional multilayer structure is folded in a cylindrical shape and a case where it is folded in a rectangular parallelepiped shape.
2 is a schematic longitudinal cross-sectional view showing the structure of a heat reflective insulating material of a multi-layer structure according to the first embodiment of the present invention.
3 is a perspective view showing the configuration of an insulating foam according to an embodiment of the present invention.
4 is a schematic longitudinal cross-sectional view showing the structure of a heat reflective insulating material of a multilayer structure according to a second embodiment of the present invention.
5 is a view showing a deformation that appears when the heat-reflecting insulating material of the present invention is folded in a cylindrical shape.
6 is a view schematically showing a configuration in which cutouts are alternately provided for each predetermined length in a length direction of a heat-reflecting insulating material of a multilayer structure and at a predetermined depth in the thickness direction of the insulating material over a width direction according to the present invention.
7 is a view showing a state before and after folding of the heat reflective insulating material of the multilayer structure according to the present invention.

Hereinafter, the present invention will be described with reference to examples. In the following description, descriptions of technical configurations already known in the art will be omitted. Even if this description is omitted, those skilled in the art will be able to easily understand the characteristic configuration of the present invention through the following description.

2 is a schematic longitudinal cross-sectional view showing the structure of a heat reflective insulating material of a multi-layer structure according to the first embodiment of the present invention.

As shown, the heat-reflecting heat insulator of a multilayer structure is a heat insulator formed by stacking a plurality of basic structures (A). That is, the basic structure (A) includes a porous mesh-shaped insulating foam 10 composed of PE (polyethylene) crosslinked resin, and a film having heat reflection performance bonded to the upper and lower surfaces of the insulating foam (eg, heat fusion). Include. Since the heat-insulating foam 10 is in the form of a porous mesh, an independent air layer 20 is formed by the heat-reflective films on the upper and lower surfaces and the walls of the heat-insulating foam. On the other hand, as the heat reflective film, the surface emissivity is low, for example, aluminum film having a thickness of 5 to 300㎛, polyolefin and polyester, nylon, Teflon, cellulose, polyvinyl chloride, etc. on one side or both sides of a film or nonwoven fabric A single film such as an aluminum composite film with an aluminum thin film attached, an aluminum deposition film with aluminum deposited on one or both sides of an organic film or nonwoven fabric, or an aluminum coated film coated with aluminum on one or both sides of a synthetic resin sheet, or two or more of the above film materials An abdominal film made of the same or different types of films may be selectively used, and also a heat-resistant film of an aluminum film, glass fiber, and aluminum film may be used.

In this embodiment, the insulating foam 10 is formed of PE, but may be formed of polypropylene, low-density polyethylene, or the like, and a flame retardant or the like may be added. In this heat-insulating foam, a resin is injected into a foam molding machine to form a foam, and then the foam is perforated into a porous mesh to form each hole. The shape of the insulating foam manufactured through this process is shown in FIG. 3. In the illustrated embodiment, the shape of the hole is a rhombus, but the present invention is not limited thereto. For example, a hole may be formed in the form of a circle, a square, or a honeycomb during the perforation.

A film having heat reflection performance is bonded to the upper and lower surfaces of the prepared heat-insulating foam by, for example, thermal fusion or bonding to form a basic structure (A). When this basic structure (A) is laminated to a predetermined thickness according to the conditions of the construction site (film and film are bonded using a predetermined adhesive), a reflective insulating material of a multilayer structure having a cross-sectional structure as shown in FIG. 2 Can be obtained.

FIG. 4 schematically shows the structure of a heat-reflecting heat insulating material having a multilayer structure according to a second embodiment of the present invention.

In the case of the heat-reflecting heat insulating material having a multilayer structure according to the first embodiment shown in FIG. 2, a plurality of basic structures A are stacked. On the contrary, in the case of the embodiment shown in FIG. 4, the basic structure (A) and its deformed structure (B) are used to construct a heat-reflecting heat insulator of a multilayer structure. Specifically, first, the basic structure (A) is constructed as described above. Apart from this basic structure, a modified structure (B) in which the film bonded to the upper surface is excluded from the basic structure (A) is prepared. That is, in the process of manufacturing the basic structure (A), the film is bonded only to the lower surface of the insulating foam to manufacture a deformed structure (B) separate from the basic structure (A). Subsequently, the deformed structure B is laminated to a predetermined thickness according to the conditions of the construction site with respect to the basic structure A, thereby constructing a heat-reflecting heat insulating material having a multilayer structure as shown in FIG. 4. In the case of the heat reflective insulating material according to the second embodiment, compared to the first embodiment, the film bonded to the insulation foam can be reduced, and the process of bonding the film to the film can be reduced, manufacturing cost and manufacturing time. You can reduce the back.

On the other hand, as shown in Figures 2 and 4, in the heat-reflecting heat insulating material of the multi-layer structure of the present invention, the basic structure (A) (deformed structure (B)) constituting each layer is of the heat-insulating foam 10 The walls are stacked so as to be offset from each other in the vertical direction with the walls of the insulating foam 10 of the upper and lower layers of the basic structure A (deformed structure B). As a result, compared with a structure in which the walls of the heat insulating wall are arranged side by side in a vertical direction, the path through which heat travels becomes complicated, and therefore, it is possible to stay in the air layer in the heat insulating material for a long time, thereby improving the heat insulation performance.

On the other hand, in order to store/transport the heat reflective insulating material configured as described above, for example, it may be rolled in a cylindrical shape. However, in recent years, there is a lot of demand for an insulation material having a thickness of 50 mm or more.It is not easy to wind the insulation material of this thickness in a cylindrical shape, and even if it is wound like that, deformation may occur inside the insulation material as shown in FIG. I can. Moreover, the width of the insulation material wound in the form of a roll is greatly increased, and a lot of space is required for storage/loading, and it is difficult to transport many insulation materials to the construction site at once.

In relation to this problem, according to the present invention, as described above, when the insulation foam is punched, the film is bonded and laminated to form a continuous insulation material, and then cut to a predetermined length, unlike the conventional one, A process of cutting the insulation material by a predetermined length in the width direction is performed.

Specifically, FIG. 6 is a plan view of the heat insulating material according to the present invention (a plan view in which the thickness of the heat insulating material is in the vertical direction). As shown, according to the present invention, cutouts cut to a predetermined depth in the thickness direction of the insulation material in the length direction of the insulation material and in the width direction are alternately provided for each predetermined length. That is, the insulation material is cut from one side (e.g., the bottom surface) of the insulation material toward the top surface (i.e., in the thickness direction) to form the first cut-out part 100, and the first cut-out in the part following this cut-out part by a certain length The second cut-out portion 100 is formed by cutting the insulating material in the opposite direction to the negative side, that is, from the upper surface to the lower surface of the insulating material (ie, in the thickness direction) (reference numeral E denotes the end of the insulating material). At this time. The cutouts are provided according to the length of the insulating material to be constructed (for example, if a 7.5m long insulating material is required, four cutouts may be formed every 1.5m). By configuring in this way, the thick heat insulating material can be folded in a tetrahedral shape instead of a cylindrical shape (see FIG. 7). Thereby, compared to storage/transport by rolling it in a cylindrical shape, its width can be significantly reduced, allowing more insulation to be loaded in the same space and easily transported to a narrow construction space, as well as a large area Continuous construction is possible at the construction site of, so workability can be improved.

On the other hand, it is necessary to configure the depth of the cutout 100 in the thickness direction of the insulating material differently depending on the material constituting the insulating material. That is, if the depth of the cutout portion 100 is too low, the inventor of the present invention may cause a deformation beyond the thickness restoration force of the product at the folded portion or it may be difficult to fold it in a square shape, and if the depth is too deep, the product is broken. Found that there is. In this regard, the present inventor discovered that it is necessary to adjust the depth of the cutout portion depending on the material of the film constituting the insulating material. When using an aluminum film, which has a weaker tensile force compared to synthetic resin, 50 It was found that it is preferable to configure the depth of the cutout in the range of to 75%, and when the film is mainly composed of the composite film, it is preferable to configure the depth of the cutout in the range of 50 to 87%. That is, it is necessary to form the cutout at least 50% of the thickness of the insulating material.

Above, although the present invention has been described with reference to a preferred embodiment, it should be understood that the present invention is not limited to the above embodiment. That is, the above embodiments can be variously modified and modified within the scope of the claims to be described later, and these are also within the scope of the present invention. For example, although PE or the like has been exemplified as a resin constituting the heat-insulating foam, a heat-insulating foam may be constructed using a resin having heat-insulating performance other than the exemplified resin, which is also within the scope of the present invention. In addition, when manufacturing the heat insulating foam, various additives may be added.

A: Basic structure
B: deformation structure
10: insulating foam
20: air layer
30: film
100: cutout

Claims (8)

Insulating foam formed in the form of a porous net and manufactured using resin,
Heat reflective film attached to the upper and lower surfaces of the insulating foam
As a heat-reflective insulating material consisting of a plurality of stacked basic structures consisting of,
In each layer, a plurality of independent air layers are formed by the walls of the holes of the film and the insulating foam,
When viewed from a plane in which the thickness of the insulation material is in the vertical direction, cutouts are alternately provided at predetermined depths in the thickness direction of the insulation material in the length direction of the insulation material and across the width direction, and the heating plate configured to fold the insulation material Four-star insulation. Formed in the form of a porous mesh, for a basic structure consisting of an insulating foam manufactured using a resin and a heat reflective film attached to the upper and lower surfaces of the insulating foam, formed in the form of a porous mesh, manufactured using a resin As a heat-reflective heat insulator comprising a plurality of deformable structures consisting of a heat-insulating foam and a heat-reflective film attached to an upper surface of the heat-insulating foam,
In each layer, a plurality of independent air layers are formed by the walls of the holes of the film and the insulating foam,
When viewed from a plane in which the thickness of the insulation material is in the vertical direction, cutouts are alternately provided at predetermined depths in the thickness direction of the insulation material in the length direction of the insulation material and across the width direction, and the heating plate configured to fold the insulation material Four-star insulation. The method according to claim 1, wherein the basic structure constituting each layer is heat reflective, characterized in that the walls partitioning the holes of the insulating foam are stacked to be offset from each other in a vertical direction with the walls of the insulating foam of other basic structures of the upper and lower layers. insulator. The method according to claim 2, wherein the deformable structure constituting each layer is heat reflective, characterized in that the walls partitioning the holes of the insulating foam are stacked to be offset from each other in a vertical direction with the walls of the insulating foam of different deformable structures of the upper and lower layers. insulator. The method according to any one of claims 1 to 4, wherein the cutout includes a first cutout formed by cutting the insulating material from a lower surface to an upper surface of the insulating material when the insulating material is viewed in a plan view, and a predetermined length at the first cutout Heat-reflective heat insulator, characterized in that the second cutout portions formed by cutting the heat insulator from the top to the bottom of the heat insulator at a subsequent portion are alternately formed. The heat-reflective heat insulating material according to claim 5, wherein a depth of the cutout portion in the thickness direction of the heat insulating material is at least half of the thickness of the heat insulating material. The heat reflective heat insulating material according to claim 6, wherein polyethylene resin is used as the heat insulating foam of the heat insulating material. The heat-reflective heat insulator according to claim 6, wherein the hole of the heat-insulating foam has a circular, square, or honeycomb shape.

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