JPH08296286A - Heat insulating panel - Google Patents

Abstract

PURPOSE: To prevent the generation of a void due to a vibration and restrain a change with the lapse of time during a transport by housing a heat insulating material such as a chip type material and a gas-sealed soft sheet bag in a hollow and shallow enclosure in such a state as preventing the shift of the bag therein. CONSTITUTION: A heat insulating material is placed on the bottom of a hollow and shallow enclosure 11 and a gas-sealed bag is laid on the material. Then, a lid body is sealed with ah adhesive. In this case, the insulating material is covered with the upper gas-sealed bag for restricting a motion in the enclosure 11. The generation of a void in a heat insulating panel 10 so made is thereby prevented, when the panel 10 is subjected to a vibration or the like during a transport. According to this construction, the panel 10 can be laid in a ceiling plenum, beneath a floor panel, within a wall or the like for hot and cold insulation, and cost for air conditioning can be lessened.

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 having a low hygroscopic property and a little deterioration over time, for example, for keeping heat of a building wall, floor or ceiling.
The present invention relates to a heat insulating panel which is preferably used as a heat insulating material or a heat insulating medium for various industrial equipment.

[0002]

2. Description of the Related Art Conventionally, in the above fields, glass wool,
Insulators that use inorganic-material-based heat insulators such as rock wool or perlite, and synthetic resin-based insulators that use foam such as polyurethane or polystyrene as the heat insulator,
It is used. A heat insulator made by accumulating a large number of filaments such as glass wool or rock wool may be used as it is as an amorphous heat insulating material, but in general, a binder is used to prevent the filaments from being dispersed. It is used in the form of a bag made of a plastic sheet, a bag made of a sheet made by vapor-depositing aluminum on a plastic film, or a paper bag after being shaped into the above shape. On the other hand, a synthetic resin type heat insulator having a foamed material such as polyurethane or polystyrene as a heat insulating material is enclosed in a panel and used in the form of a molded heat insulating panel that matches the outer shape of a heat insulating object.

[0003]

In the conventional filament integrated type heat insulator, as described below, the workability is poor, the health care problem for the worker is deteriorated, and the heat insulating performance is deteriorated with time. Is pointed out as a problem. First, the workability is poor. If the heat insulating material in which filaments such as glass wool and rock wool are accumulated is used as it is, the filaments give the operator an unpleasant feeling, resulting in poor workability. Undesired problems of. Even when glass wool or rock wool is used in the form of a bag, the bag is easily broken due to the fact that the bag is made of a soft sheet, and there is a similar problem.

Secondly, glass wool and rock wool have the drawback that the creep strength of the filament is low. Therefore, when a heat insulator made of glass wool or rock wool is mounted under the floor plate, for example, the filament of the heat insulator that is initially filled between the floor plate and the heat insulator support plate is gradually settled downward and between the floor plate. A space with no heat insulating material is created. As a result, dew condensation is likely to occur, so that the glass wool and rock wool absorb moisture and the heat insulating performance is significantly reduced. Due to the deterioration of the heat insulation performance, dew condensation becomes more severe, which causes a vicious circle in which the heat insulation performance further deteriorates. Also, the moisture generated as a result of dew condensation corrodes the surrounding floor plate, heat insulator support plate, or other members.

The above-mentioned problem of dew condensation is the same as that of a heat insulator in which glass wool or rock wool is put in a paper bag. That is, due to the low creep strength of the filament, a space is similarly created in the upper part of the paper bag to cause internal dew condensation, the paper bag is wet due to the dew condensation water, and the corrosion of the paper bag is promoted due to mold and the like. The paper bag is torn. As a result, the glass wool or the rock wool is exposed, and the same phenomenon occurs as when the glass wool or the like is used naked. When a heat-insulating material is put in a plastic bag made of aluminum vapor, as in the case of putting it in a paper bag, a space is created at the top of the plastic bag and internal dew condensation occurs, and the water droplets around it create a floor plate around the heat insulator support plate Alternatively, it comes into contact with other members to form an acid or alkaline aqueous solution, which causes the deposited aluminum to be dissolved and corroded.

As described above, the conventional heat insulating body using glass wool and rock wool as the heat insulating material is
Work efficiency, worker health management, deterioration of heat insulation performance over time,
It cannot be said to be a satisfactory heat insulator because it has problems such as changes in shape over time and dew condensation.

On the other hand, an insulating panel in which an inorganic insulating material such as pearlite or a foamed material such as polyurethane or polystyrene is enclosed as a heat insulating material in the panel must be filled with the heat insulating material so that a gap is generated due to vibration or the like. There is a risk of There is also a problem that the heat insulating layer cannot be adjusted unless the inner size of the panel is adjusted.

In view of the problems of the conventional heat insulators and heat insulating panels described above, the object of the present invention is not to fill the heat insulating material enclosed in the panel, and to insulate the panel without adjusting the inner dimensions of the panel. An object of the present invention is to provide a heat insulating panel in which the layers can be adjusted and the shape of which does not change with time like a heat insulating body using glass wool as a heat insulating material.

[0009]

In order to achieve the above object, a heat insulating panel according to the present invention has a hollow shallow casing in which a heat insulating material made of chip-like or powder-like plastic foam and a gas are provided. The pouch body made of a flexible sheet that is hermetically filled is characterized in that the pouch body is housed so as to prevent movement of the heat insulating material in the housing.

In the present invention, a chip-like or powder-like plastic foam is used as the heat insulating material. The plastic is not particularly limited as long as it is a foam, but from the viewpoint of economy and availability, it is preferably polyolefin.
From the viewpoint of enhancing the heat insulating property, it is preferable that the foam has a high expansion ratio, closed cells and small cells, and the expansion ratio is preferably about 30 to 60 times. Is. Further, the type of plastic need not be single, and may be multiple types. Therefore, for example, various plastic foam residual materials generated in a plastic foam processing factory, such as cutting waste, can be used as the heat insulating material in the present invention. That is, the chip-shaped plastic foam may be a residual material obtained by processing various plastic foams, or a residual material obtained by processing various plastic foams may be further processed. . Here, the processing means, for example, cutting and the like, and the processing means, for example, further cutting the cutting residual material generated in a processing plant of a plastic foam into chips. Therefore, the use of such a residual material is preferable from the viewpoint of recycling industrial waste.

The chip referred to in the present specification means a small piece,
The shape does not have to be constant, and the size may be large or small. On the contrary, it is preferable that the shape is not uniform and that the size is various, because it is easier to fill. The powder referred to in the present specification simply means a small sphere, and the shape thereof does not need to be a perfect sphere, does not need to be constant, and may have a large size or a small size. On the contrary, it is preferable that the shape is not uniform and that the size is various, because it is easier to fill.

The shape and size of the heat insulating panel, that is, the hollow shallow housing is not particularly limited as long as it is a dimension that can secure a necessary thickness of the heat insulating panel which is determined from heat insulation or cold insulation conditions. The heat insulating panel according to the invention may be shaped and sized according to the object to be used. The flexible sheet bag is plastic, rubber, or paper that is suitable for the shape and size of the hollow shallow housing and has a size that covers the heat insulating material filled in the hollow shallow housing. There is no particular limitation as long as it is flexible in a dimension that can be secured, but a polyethylene sheet is preferable because it has mechanical strength and durability and is economical. The bag body may have a shape and a size according to an object for which the heat insulation panel according to the present invention is used.

A preferred embodiment of the present invention is characterized in that a flexible sheet bag body is filled with a heat insulating material made of chip-like or powder-like plastic foam. The bag is not particularly limited as long as it is flexible and has a size that can secure a size enough to cover the bottom of the hollow shallow housing, but preferably has mechanical strength and durability and is economical. It is a polyethylene sheet because it is a target.

A preferred embodiment of the present invention is characterized in that a check valve is provided at the gas filling port of the bag body.

[0015]

According to the invention of claim 1, since the heat insulating material is sealed in the hollow shallow housing together with the flexible sheet bag body in which the gas is hermetically filled, the heat insulating material is fully filled in the hollow shallow housing. Alternatively, a certain amount of heat insulating material is put in, and the remaining voids are covered with a bag that is hermetically filled with gas, so that voids do not occur due to vibration or the like. In other words, the thickness of the heat insulating material can be changed by changing the amount of gas in the bag inside the hollow shallow housing without changing the inner size of the hollow shallow housing. Further, since the heat insulating material is a plastic foam, the creep strength is large, and therefore, unlike the conventional filament integrated heat insulating panel, the heat insulating material does not settle downward, so that there is little change in shape over time and the shape is also small. Holds constant. If the heat insulating material settles down, it is possible to return to the current state by additionally filling the bag with gas.

According to the second aspect of the present invention, since the heat insulating material made of chip-like or powder-like plastic foam is filled in the bag body made of the flexible sheet, the heat insulating panel is filled with the heat insulating material. At this time, the heat insulating material does not fall apart and spills from the hollow shallow housing, and the heat insulating material can be easily measured and attached.

In a preferred embodiment of the present invention, a check valve is provided at the gas filling port of the bag body, so that the gas in the bag body does not easily leak. If the heat insulating material were to settle down, it would be easier to add additional gas to the bag, and the heat insulating material would block the voids created by the downward flow. Since it is not generated, the moisture of the dew condensation does not cause corrosion of the members of the heat insulation panel and damage of the heat insulation panel.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the accompanying drawings. (Example 1) FIG. 1 is a perspective view of a heat insulating panel according to the present invention.
FIG. 2 is a sectional view of the heat insulation panel shown in FIG. The heat insulating panel 10 of this embodiment has an inner length L of 88.
As shown in FIG. 2, a heat insulating material 12 is housed in the bottom of a plastic hollow shallow housing 11 having a width of 0 mm, a width W of 430 mm, and a height H of 100 mm, and the top of the heat insulating material 12 is filled with air. The stopped bag body 13 is arranged and sealed with an adhesive agent by a plastic lid body 14.

In this embodiment, as the heat insulating material 12, a powder of foamed polyethylene is spread over about 50 mm.
The bag body 13 is made of polypropylene of 480 mm × 930 mm, and the bag body 13 is filled and sealed with 18.92 l of air. Since the heat insulating material 12 housed in the bottom of the hollow shallow casing 11 is covered by the bag body 13 filled with air and sealed in the upper portion, the hollow shallow casing 11 is covered.
There was no free movement around inside, and during transportation, no gap was created in the heat insulating panel 10 even if the heat insulating panel 10 was subjected to vibration or the like. The foamed polyethylene powder as the heat insulating material 12 is made of polyethylene foamed into a spherical shape and has an appropriate size. The size of the chip varies, but on average, the volume per chip is one. Is about 0.1 to 10 cm ³ . The average expansion ratio of the powdered polyethylene foam was 30 times.

When the heat insulating panel 10 of Example 1 was laid one step above the ceiling of an ordinary wooden building house, the heating and cooling costs could be greatly reduced compared to when the heat insulating panel was not laid. From this, it was confirmed that the heat insulation performance of the heat insulation panel 10 was good.

(Embodiment 2) Insulation panel 20 of this embodiment
As shown in FIG. 3, the heat insulating material 22 is housed in the bottom of the plastic hollow shallow housing 21 having an inner length L of 880 mm, a width W of 580 mm, and a height H of 100 mm.
A bag body 23 in which air is filled and sealed on the top of the heat insulating material 22.
Are arranged and fixed and sealed with a nail by a plastic lid 24.

In the present embodiment, as the heat insulating material 22, foamed polyethylene chips are laid for about 60 mm. The bag body 23 is made of polypropylene of 620 mm × 920 mm, and the bag body 23 is filled and sealed with 20.4 l of air. The foamed polyethylene chips as the heat insulating material 22 are obtained by further cutting the cutting residual material obtained by cutting the foamed polyethylene plate in the processing factory, and have various shapes. The size of the chip varies from small to large, but on average, the volume per chip is about 356.
It is cm ³ . The average expansion ratio of the expanded polyethylene chip used as the heat insulating material 22 was 50 times.
Since the heat insulating material 22 accommodated in the bottom of the hollow shallow housing 21 is covered by the bag body 23 which is filled and sealed with air in the upper portion thereof, it is free to move around in the hollow shallow housing 21. In addition, during transportation, no void was formed in the heat insulating panel 20 even if the heat insulating panel 20 was subjected to vibration or the like.

As shown in FIG. 3, when the heat insulating panel 20 of Example 2 is laid one step below the floor plate 25 of a normal wooden construction house, the heating and cooling costs are greatly reduced as compared with the case where the heat insulating panel is not laid. did it. From this, it was confirmed that the heat insulation performance of the heat insulation panel 20 was good. Further, no sign that dew condensation occurred on the heat insulating panel 20 and adversely affected the surrounding wood could not be observed. In FIG. 3, 26 is a heat insulating panel support plate, and 27 is a member that supports the heat insulating panel support plate 26 from the floor plate 25.

(Embodiment 3) The heat insulating panel 30 of this embodiment
As shown in FIG. 4, a bag made of polypropylene with a heat insulating material 32 at the bottom of a plastic hollow shallow housing 31 having an inner length L of 880 mm, a width W of 430 mm, and a height H of 100 mm. What is filled and sealed in the body 32A is housed, and a bag body 33 filled with air is arranged on the upper portion of the bag body 32A, and both are fixedly sealed with a plastic lid 34 by an adhesive. It has been done. In this embodiment, as the bag body 32A for filling and sealing the heat insulating material 32, a polypropylene-made 480 mm × 930 mm polypropylene in which aluminum is vapor-deposited is used. The foamed polyethylene powder as the heat insulating material 32 is the same as that used in Example 1, and is made by foaming polyethylene in a spherical shape to an appropriate size, and the size of the tip can be various sizes. However, on average, the volume per chip is about 0.1 to 10c.
m is ^3. The average expansion ratio of the powdered polyethylene foam was 30 times.

The above heat insulating material 32 is placed on the bag body 32A by 18.9.
l filled and sealed. The bag 33, which is filled with air and is sealed on the upper part of the bag 32A, is 480 mm × 93.
It is made of polypropylene of 0 mm, and the bag 33 is filled with 18.92 l of air and sealed. The bag body 33 is provided with a check valve 33B at the gas filling port 33A as shown in FIG. 5, so that the air inside the bag body 33 does not easily leak. In the figure, 33C is a cap of the gas filling port 33A. The heat insulating material 32 filled in the bag body 32A arranged at the bottom of the hollow shallow housing 31 is the bag body 32.
Since it is inside A and is covered with the bag 13 filled with air at the upper part, it does not move freely inside the heat insulating panel 30 and the heat insulating panel 30 vibrates during transportation. Insulation panel 30
There were no voids inside.

The heat insulating panel 30 of the third embodiment is attached to the wall 35 of the factory.
It was fitted inside and the outside was covered with a thin zinc-iron plate 36. The heat retention and cold retention effects were good, and no sign that dew condensation occurred on the heat insulating panel 30 and corroded the surrounding wall 35 or the zinc iron plate 36 of the exterior could be observed.

[0027]

According to the first aspect of the present invention, a hollow shallow casing is provided with a heat insulating material made of chip-like or powder-like plastic foam, and a flexible sheet bag body hermetically filled with gas. The bag body is housed so as to prevent movement of the heat insulating material in the housing. As a result, it is not necessary to fully fill the hollow shallow housing with the heat insulating material, and the remaining voids are covered with the bag in which the gas is hermetically sealed, so that the heat insulating material in the hollow shallow housing may be separated. Since it does not exist, no void is created by vibration or the like.

Further, it is possible to change the thickness of the heat insulating material by changing the amount of gas in the bag in the hollow shallow housing without changing the inner size of the hollow shallow housing. Further, since the heat insulating material is a plastic foam, the creep strength is high, and therefore, unlike the conventional filament integrated heat insulating panel, the heat insulating material does not settle down, so that there is little change in shape over time and the shape is also small. Holds constant.

According to the second aspect of the present invention, since the flexible sheet bag body is filled with the heat insulating material made of chip-like or powder-like plastic foam, heat insulation is provided when the heat insulating panel is filled with the heat insulating material. Since the material does not fall apart from the hollow shallow housing and falls off, it is easy to measure and install the heat insulating material.

According to the third aspect of the present invention, since the check valve is provided at the gas filling port of the bag body, the structure is such that the gas in the bag body does not easily leak.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of a heat insulating panel according to the present invention.

FIG. 2 is a cross-sectional view taken along the line I-I of the heat insulation panel shown in FIG.

FIG. 3 is a cross-sectional view illustrating a case where a second embodiment of the heat insulation panel according to the present invention is applied to heat insulation under a floor plate.

FIG. 4 is a cross-sectional view illustrating a case where a third embodiment of the heat insulation panel according to the present invention is applied to a factory wall.

FIG. 5 is a cross-sectional view of a gas filling port of a bag body used in a third embodiment of the heat insulation panel according to the present invention.

[Explanation of symbols]

 10 1st Example of the heat insulation panel which concerns on this invention 11 Hollow shallow type housing 12 Thermal insulation material 13 Bag body 14 Lid body 20 2nd Example of the heat insulation panel which concerns on this invention 21 Hollow shallow type housing 22 Thermal insulation material 23 bag Body 24 Lid body 30 Third embodiment of heat insulation panel according to the present invention 31 Hollow shallow type housing 32 Heat insulation material 33 Bag body 33B Check valve 34 Lid body

Claims (3)

[Claims] 1. A hollow shallow casing, wherein a heat insulating material made of a chip-like or powder-like plastic foam and a bag made of a flexible sheet in which a gas is hermetically filled are provided in the case where the bag is made of a heat insulating material. A heat-insulating panel that is stored so as to prevent movement in the. 2. The heat insulating panel according to claim 1, wherein the heat insulating material made of the chip-shaped or powder-shaped plastic foam is filled in a flexible sheet bag body. 3. The heat insulating panel according to claim 1, wherein a check valve is provided at a gas filling port of the bag body that is hermetically filled with the gas.