JP2000144967A - Insulation panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit to provide light weight, low cost and suppress the internal temperature rise if a container or the like is produced from a insulation panel by constituting the panel with insulating material filled inside a plastic corrugated fiberboard. SOLUTION: On a single surface side of a polypropylene or polycarbonate panel, many slender supporting members 4 made of the same material as panel's are installed perpendicularly to the panel 2 at the surface side, at the other end of the supporting members 4, a rear surface panel 4 made of the polypropylene or polycarbonate are arranged in parallel to the panel 2 at the surface side thereby forming a plastic corrugated fiberboard. And foamed styrene is filled between the supporting members 4 as insulating material between the front surface side panel 2 and the rear surface side panel 3. Thus, no cavity is created between the front surface panel 2 and the rear surface panel 3, as a result, the transmission of heat from the surface panel 2 to the rear surface panel 3 can be restricted to a minimum.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating panel, and more particularly, to a heat insulating panel characterized in that a heat insulating material is filled in a plastic cardboard.

[0002]

2. Description of the Related Art Conventionally, in the transportation of cargo, a container, a container, or the like has been placed on a cargo bed so as to prevent the cargo to be transported from falling and to efficiently stack the cargo.
Alternatively, a device similar to this (hereinafter, referred to as “container or the like”) is provided. By mounting the container or the like on the loading platform, it is possible to efficiently load the load and prevent the loaded load from falling.

[0003] Also, when carrying luggage by aircraft or ship, containers that can efficiently store luggage and that are convenient for transportation have been used.

[0004] By the way, the containers and the like conventionally used have generally been formed of panels made of metal such as aluminum.

FIG. 5 is a view showing a metal panel conventionally used for a container or the like. In FIG. 5, reference numeral 21 denotes a metal panel.

The metal panel 21 conventionally used for containers and the like includes a front side panel 22 made of aluminum, stainless steel, etc., a back side panel 23 made of aluminum, stainless steel, etc., and the front side panel 22 and the back side. Metal or wooden support 24 connecting panel 23
And was constituted by.

Conventionally, the metal panel 21
Are assembled into a square shape by a frame or the like to form a container or the like.

[0008]

However, the panels conventionally used for containers and the like have a large weight because they are made of metal. Therefore, when the panels are mounted on a truck bed of a truck or the like, the load capacity of the panels is small. There was a problem that the amount of luggage that could be loaded was reduced due to restrictions.

In addition, there is a problem that the price of the panel made of aluminum or the like is high, which increases the manufacturing cost of the container or the like.

Furthermore, for example, in the case of aluminum, a panel having a square of 1 cm has a thermal conductivity of 5000 per second.
Since it is high in calories, there is a problem that the temperature inside the container rises in a container or the like using the same. For this reason, when transporting items that need to be frozen or refrigerated, it is necessary to operate a cooler or the like fully in order to suppress a rise in the temperature inside the container. As a result, there is a disadvantage that power consumption is increased.

It is an object of the present invention to provide a heat-insulating panel which is lightweight and inexpensive, and in which when a container or the like is formed therefrom, the rise in temperature inside the container can be suppressed. Is an issue.

[0012]

The heat insulating panel of the present invention comprises:
It is characterized in that a heat insulating material is filled in a plastic cardboard.

Since the heat insulation panel of the present invention uses plastic cardboard, it is possible to reduce the weight, unlike a metal panel. Therefore, when a container or the like is formed using this, the weight of the entire container can be reduced, and as a result, unlike the case of a container formed using metal panels, more luggage is loaded. It is possible.

Further, since the cardboard made of plastic is used, the cost can be reduced. When a container or the like is formed by using the cardboard, the manufacturing cost of the container can be reduced.

Furthermore, since the inside is filled with a heat insulating material to prevent convection of air inside, in a container formed using this, it is possible to suppress an increase in temperature inside the container. .

That is, in a conventionally used panel, air enters because the inside of the panel is hollow. Therefore, for example, if the temperature of the panel surface rises, the air inside will convect, and the temperature inside the panel will rise. As a result, the temperature of the panel surface is transmitted to the back surface of the panel through the increased temperature air, and the temperature inside the container has increased. However, in the heat insulating panel of the present invention, the inside of the panel is filled with a heat insulating material to prevent air from entering the inside of the panel, so that the temperature of the panel surface can be prevented from being transmitted to the back surface of the panel. As a result, when a container is formed by using this, it is possible to prevent the temperature inside the container from rising.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a heat insulating panel according to the present invention, a plastic back panel is connected to a plastic front panel via a plastic supporting member, thereby forming a plastic cardboard. . The space between the front panel and the rear panel is filled with a heat insulating material.

Here, a resin is preferably used as the plastic, and polypropylene is more preferably used. Since polypropylene has a low thermal conductivity of 2.8 calories per second per square centimeter, it can further enhance the heat insulating effect in combination with the heat insulating material filled therein.

In addition to polycarbonate, polycarbonate may be used. In the case of polycarbonate,
3. Thermal conductivity per centimeter squared per second.
Since it is 6 calories, it is suitable as a heat insulating panel like polypropylene, and furthermore, in the case of polycarbonate, since it is characterized by self-extinguishing properties, it can effectively act even in the case of fire etc. .

Further, it is preferable to use styrene foam as the heat insulating material.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a heat insulating panel according to the present invention will be described with reference to the drawings. FIG. 1 is a view showing a heat insulating panel according to the present embodiment. In FIG. FIG. 2 is a sectional view taken along line AA in FIG.

In the heat insulating panel 1 of this embodiment, an elongated support member 4 also made of polypropylene or polycarbonate is connected to one surface of the front panel 2 made of polypropylene or polycarbonate in a direction perpendicular to the front panel 2. Has been established.

At the other end of the support member 4, a back panel 4 also made of polypropylene or polycarbonate is connected in a direction parallel to the front panel 2, thereby forming a plastic cardboard. I have.

As described above, in the heat insulating panel 1 of the present embodiment, since the panel is formed by using polypropylene or polycarbonate which is cheaper and lighter than aluminum or the like, the manufacturing cost can be kept low. As a result, the weight of the entire container can be reduced. As a result, when a container or the like is formed using the heat insulating panel 1, it is possible to reduce the manufacturing cost of the container and to reduce the weight of the entire container. can do.

Also, propylene has a thermal conductivity of 2.8 calories per second per square centimeter,
In the case of polycarbonate, the thermal conductivity per square centimeter is 4.6 calories per second,
In the heat insulating panel 1 of this embodiment using this, unlike the case where aluminum having a thermal conductivity of 5000 calories per second in 1 cm 2 is lower, the thermal conductivity can be reduced. When a container or the like is formed using the heat insulating panel of the present embodiment, it is possible to suppress a rise in the temperature inside the container even when the ambient temperature rises.

Next, in the figure, reference numeral 4 denotes a polystyrene foam for heat insulation. In the heat insulating panel 1 of this embodiment, the polystyrene foam is used as a heat insulating material.
Styrofoam for heat insulation is filled between the support member 4 and the back side panel 3.

As described above, in the conventionally used panel, since the space between the front panel and the rear panel is hollow and air enters, when the temperature of the front panel rises, There is a problem that the air convects in the cavity, the temperature of the air in the cavity also increases, and as a result, the temperature of the rear panel also increases through the air. Therefore, for example, when a container or the like is formed using this conventional panel, the temperature in the container increases when the ambient temperature increases. Therefore, conventionally, especially when transporting a product that requires freezing or refrigeration, it was necessary to operate a cooler or the like fully to suppress a rise in the temperature inside the container.

On the other hand, in the heat insulating panel 1 of this embodiment, since the styrofoam 5 for heat insulation is filled between the front panel 2 and the rear panel 3, the front panel 2 and the rear panel 3 are filled. No cavity was formed between them, and as a result, it was possible to prevent the heat of the front panel 2 from being transmitted to the rear panel.

As described above, in the heat insulation panel of this embodiment,
Since polypropylene or polycarbonate with low thermal conductivity is used, styrofoam is further filled between the front panel and the rear panel to ensure that a cavity is formed between the front panel and the rear panel. This prevents the heat of the front panel from being conducted to the rear panel, which is excellent in the heat retaining effect.

For this reason, for example, when a container or the like is formed by using the heat insulating panel of the present embodiment, the temperature rise in the container can be suppressed to a low level, and when a container requiring freezing and refrigeration is transported. Even in this case, it is no longer necessary to operate the cooler at full power as in the related art, and power consumption can be reduced.

In addition, since the heat insulating effect is excellent as described above, it is possible to use a heat insulating panel in the present embodiment, for example, for an outer wall of a building.

FIG. 3 is a view showing a case in which a container is formed on a carrier of a truck using the heat insulating panel 1 of the present embodiment. Thus, the heat insulating panel 1 of the present embodiment is used. When forming a container or the like, it is only necessary to assemble the heat insulating panel of this embodiment in a square shape using the frame 6 and the bracket 7.

FIG. 4 is a table showing the results of comparative tests performed on the propylene, polycarbonate, aluminum, etc. by the present inventors. As shown in this table, the results for the case of polycarbonate are shown. Has self-extinguishing properties, and when used, has the advantage of being resistant to fire and the like.

In the above-mentioned embodiment, the case where the plastic corrugated cardboard is formed by using polypropylene or polycarbonate has been described. Any material may be used as long as it has a low rate and is lightweight and inexpensive.

Further, in the above-described embodiment, the case where the styrene foam is used as the heat insulating material has been described. However, the heat insulating material is not necessarily limited to the styrofoam. Any one may be used.

Further, in FIG. 4, the case where a container is formed on the bed of a truck using the heat insulating panel of the present invention has been described. However, the method of using the heat insulating panel of the present invention is not limited thereto. Containers, aviation containers and the like may be formed, and the heat insulating panel of the present invention may be used for an outer wall of a building.

[0037]

The heat insulation panel of the present invention is implemented in the form described above, and has the following effects.

The heat insulating panel of the present invention is characterized in that a heat insulating material is filled in a plastic cardboard.

As described above, the heat insulation panel of the present invention uses a cardboard made of plastic, so that it can be reduced in weight, unlike a panel made of metal, so that it can be used for containers and the like. When forming
The weight of the entire container can be kept low, so that more luggage can be loaded, unlike a container formed using metal panels.
Further, since the cardboard made of plastic is used, the price can be reduced. When a container or the like is formed using the cardboard, the manufacturing cost of the container can be reduced.

Further, since the inside is filled with a heat insulating material to prevent a cavity from being formed therein, air enters into the inside like a conventional panel, and the entered air convects. Therefore, for example, in a container formed using this, it is possible to suppress a rise in the temperature inside the container.

Further, when polypropylene or polycarbonate having a low thermal conductivity is used, the heat insulating effect can be further enhanced.

When a polycarbonate having self-extinguishing properties is used, a heat-insulating panel resistant to fires and the like can be obtained.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a heat insulating panel of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a view showing a state in which a container is formed on a cargo carrier of a truck using the embodiment of the heat insulating panel of the present invention.

FIG. 4 is a table showing the results of comparative tests on polypropylene, polycarbonate, aluminum, and the like.

FIG. 5 is a view for explaining a conventional metal panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulation panel 2 Front panel 3 Back panel 4 Supporting material 5 Styrofoam for heat insulation

Claims (6)

[Claims] 1. A heat insulating panel comprising a plastic cardboard filled with a heat insulating material. 2. A front panel (2), a rear panel (3), and a support member (4) for connecting the front panel (2) and the rear panel (3). The front panel (2) of the plastic cardboard (1)
And a heat insulating material (5) filled between the rear panel (3) and the rear panel (3). 3. The heat insulating panel according to claim 1, wherein the plastic cardboard (1) is formed of a resin. 4. The heat insulating panel according to claim 3, wherein said plastic cardboard (1) is made of polypropylene. 5. A heat insulating panel according to claim 3, wherein said plastic cardboard is made of polycarbonate. 6. A heat insulating panel according to claim 1, wherein styrofoam is used as said heat insulating material (5).