JPH08219673A - Heat accumulation board - Google Patents

Abstract

PURPOSE: To provide a heat accumulation board which is so constituted as to prevent outflow of hydrocarbon and have excellent flame retardancy, in the heat accumulation board formed in such a manner to cover the whole surface of a heat accumulation body, carrying resin with hydrocarbon, with an aluminum laminate film. CONSTITUTION: A first heat accumulation board is formed in such a manner that an aluminum laminate film 1 and a heat accumulation body 2 are adhered to each other. Thus, heat applied during surface combustion of the heat accumulation board is rapidly transferred from the aluminum laminate film 1 to the heat accumulation body 2, the increase of the temperature of the aluminum film 1 is delayed, an aluminum foil is molten, and any hole is not formed in the aluminum film l. In a second heat accumulation board, one or more aluminum foils are inserted between the aluminum film and the heat accumulation body. In a third heat accumulation board, the aluminum laminate film is formed in such a manner that an aluminum layer, a reinforcing layer, and an adhesion layer are laminated, in the order, from an outer layer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage board in which a heat storage body having a resin supporting hydrocarbons is covered with an aluminum laminate film.

[0002]

2. Description of the Related Art Conventionally, various types of heat storage materials have been proposed in which a resin supports hydrocarbon such as paraffin. In the heat storage body utilizing the latent heat associated with the phase transition between the solid phase and the liquid phase of the hydrocarbon, consideration is given to prevent the hydrocarbon from exuding from the resin when it becomes a liquid. Considering this exudation, a heat storage board is known in which the entire surface of the heat storage body is covered with a bag-shaped aluminum laminate film. The aluminum laminate film has a three-layer structure of an aluminum foil as a core layer, a reinforcing layer using a polyethylene terephthalate resin having high tensile strength as an outer layer, and an adhesive layer for thermally fusing the films to each other as an inner layer during bag processing. The one consisting of is commonly used.

[0003]

However, the heat storage board coated with the aluminum laminate film has a problem that the level of flame retardancy class 3 cannot be sufficiently secured as the level of flame retardancy defined by the Building Standards Law. This is a flame retardant test JI
During the surface burning test of S-A-1321, the temperature of the coated aluminum laminate film was 8 during 6 minutes of burning time.
Because the temperature rises to about 00 ° C., the aluminum foil is melted, holes are opened, the heat storage body inside is ignited, and the flame is burnt. On the other hand, when an iron foil having a high melting point is used instead of the aluminum foil, there is a problem that the workability into a bag is poor.

The present invention has been made in view of the above facts, and an object of the present invention is to provide a heat storage board obtained by coating the entire surface of a heat storage material having a resin supporting hydrocarbon with an aluminum laminate film. It is intended to provide a heat storage board which prevents carbon from flowing out and has good flame retardancy.

[0005]

The heat storage board according to claim 1 of the present invention is a heat storage board in which the entire surface of a heat storage body 2 in which a resin supports hydrocarbons is covered with an aluminum laminate film 1. The aluminum laminate film 1 and the heat storage body 2 are in close contact with each other.

A heat storage board according to a second aspect of the present invention is a heat storage board obtained by coating the entire surface of a heat storage body 2 in which a hydrocarbon is supported on a resin with an aluminum laminate film 1, and the aluminum laminate film 1 and the heat storage board. It is characterized in that one or more aluminum foils 3 are inserted between the bodies 2.

A heat storage board according to a third aspect of the present invention is the heat storage board according to the second aspect, wherein the aluminum foil 3 is inserted.
Of the aluminum foil 3 adjacent to the heat storage body 2 and the heat storage body 2
Are in close contact with each other.

The heat storage board according to claim 4 of the present invention is the heat storage board according to any one of claims 1 to 3, wherein the aluminum laminate film 1 is a reinforcing layer 12, an aluminum layer 11, and an adhesive layer 13 from the outer layer. It is characterized by being layered in the order of.

A heat storage board according to claim 5 of the present invention is the heat storage board according to any one of claims 1 to 3, wherein the aluminum laminate film 1 is an aluminum layer 11, a reinforcing layer 12 and an adhesive layer 13 from the outer layers. It is characterized by being layered in the order of.

A heat storage board according to claim 6 of the present invention is a heat storage board obtained by coating the entire surface of a heat storage body 2 in which a hydrocarbon is supported on a resin with an aluminum laminate film 1, wherein the aluminum laminate film 1 comprises: The aluminum layer 11, the reinforcing layer 12, and the adhesive layer 13 are laminated in this order from the outer layer.

A heat storage board according to claim 7 of the present invention is the heat storage board according to any one of claims 5 to 7, wherein the constituent material of the reinforcing layer 12 is at least one selected from acrylic resin and silicon resin. It is characterized by being.

A heat storage board according to claim 8 of the present invention is characterized in that, in the heat storage board according to any one of claims 1 to 7, the sealing portion 5 of the aluminum laminate film 1 is double-folded. .

A heat storage board according to claim 9 of the present invention is a heat storage board obtained by coating the entire surface of a heat storage body 2 in which a resin supports hydrocarbons with an aluminum laminate film 1, wherein the aluminum laminate film 1 is sealed. Part 5
Is a double fold, and the aluminum laminate film 1 has a reinforcing layer 12, an aluminum layer 11 and an adhesive layer 1 from the outer layer.
It is characterized in that it is layered in the order of 3, and the constituent material of the reinforcing layer 12 is at least one selected from acrylic resin and silicon resin.

The present invention will be described in detail below with reference to the drawings. The heat storage body 2 that constitutes the heat storage board of the present invention is one in which a resin supports hydrocarbons, and utilizes latent heat associated with the phase transition of the hydrocarbons. Examples of the resin include polyolefins, and examples of the polyolefins include ethylene-propylene elastomer, high-density polyethylene, and the like, and mixtures thereof. Examples of the hydrocarbon include paraffin, paraffin wax, isoparaffin, and polyethylene wax.

In the heat storage board of the present invention, the entire surface of the heat storage body 2 is covered with the aluminum laminate film 1. By covering with the aluminum laminate film 1, the hydrocarbon in the heat storage body 2 is prevented from flowing out.

Next, a heat storage board according to claim 1 of the present invention will be described. FIG. 1 is a sectional view showing an example of a heat storage board according to claim 1 of the present invention. In the heat storage board, the aluminum laminate film 1 and the heat storage body 2 are in close contact with each other. Examples of the contacting method include hot pressing and thermocompression bonding using a hot roll. The thermocompression bonding may be performed at a melting point of the resin on the surface of the heat storage body 2 to a temperature in the range of 30 ° C. higher than the melting point. In addition, it is preferable to perform vacuum thermocompression bonding between the aluminum laminate film 1 and the heat storage body 2 because the adhesiveness is further improved. Since the heat storage body 2 and the aluminum laminate film 1 are in close contact with each other,
Since the heat applied to the heat storage board at the time of combustion is quickly transferred from the aluminum laminate film 1 to the heat storage body 2, the temperature rise of the aluminum laminate film 1 can be delayed. As a result, in the flame retardancy test, the aluminum foil is not melted and no holes are formed in the aluminum laminate film 1, and the heat storage board retains good flame retardancy. The degree of the adhesion may be within the range having the above-mentioned function, but the heat storage body 2
It is more desirable that they are in close contact with each other over substantially the entire surface.

The layer structure of the aluminum laminate film 1 will be described. 5 and 6 are cross-sectional views of the essential parts showing the layer structure of the aluminum laminate film 1. As shown in the figure, the aluminum laminate film 1 is composed of an aluminum layer 11, a reinforcing layer 12, and an adhesive layer 13.

The aluminum layer 11 prevents hydrocarbon from flowing out and is excellent in bag-like processability. The aluminum layer 11 preferably has a thickness of 15 μm or more from the viewpoint of preventing hydrocarbon from flowing out.

The reinforcing layer 12 is pulled, bent, and
The aluminum layer 11 is reinforced against external force such as compression. Examples of the constituent material of the reinforcing layer 12 include acrylic resin, silicon resin, resin such as polyethylene terephthalate, and non-woven fabric. Among them, if acrylic resin and silicon resin are used as the constituent materials among the resins that are easy to produce, the reinforcing layer 12 does not turn black due to the heat applied during combustion, so It is suitable because it can reduce the increase in heat absorption rate.
When polyethylene terephthalate, which is widely used for the aluminum laminate film 1, is used, the color of the aluminum laminate film 1 changes to black due to flame burning, so that the heat absorption rate increases and the temperature of the aluminum laminate film 1 easily rises. Therefore, when the reinforcing layer 12 is composed of polyethylene terephthalate,
It is necessary to enhance the adhesiveness between the aluminum laminate film 1 and the heat storage body 2.

The adhesive layer 13 adheres the aluminum laminate film 1 and the heat storage body 2 to each other by thermocompression bonding and easily heat-bonds the aluminum laminate film 1 to each other during bag processing. Examples of the material of the adhesive layer 13 include linear low density polyethylene (hereinafter referred to as LLDPE).

The order of the layer structure of the aluminum laminated film 1 is as follows. The outer layer shown in FIG. 5 is composed of the reinforcing layer 12, the aluminum layer 11 and the adhesive layer 13, and the outer layer shown in FIG. An aluminum layer 11, a reinforcing layer 12, and an adhesive layer 13 are laminated in this order. Although the layer structure having the reinforcing layer 12 as the outer layer shown in FIG. 5 is generally used, this layer structure has an advantage that aluminum is not easily scratched during handling. On the other hand, the layer structure having the aluminum layer 11 as the outer layer shown in FIG. 6 makes it difficult for the surface of the heat storage board to burn during combustion, and since the radiant heat due to heating is easily reflected by the aluminum, the temperature rise of the aluminum laminate film 1 is delayed. Therefore, it is preferable in that the flame retardancy is further improved.

The seal portion 5 of the aluminum laminate film 1 will be described. 7 and 8 (a),
(B) is an explanatory view showing a seal portion 5 of the aluminum laminate film 1. Aluminum laminated film 1 above
Seal part 5 in which adhesive layers 13 of a and 1b are heat-sealed to each other
May be in a state of being bent once as shown in FIG.
The double-folded state shown in (a) and (b) may be used. FIG.
The double-folded state shown in (a) and (b) is preferable in that the seal portion 5 is less likely to come off during surface combustion as compared with the state in which the double-folding is performed, so that the flame retardancy is further improved.

Next, a heat storage board according to claim 2 of the present invention will be described. 2 is a sectional view showing an example of a heat storage board according to claim 2 of the present invention, and FIG.
It is a perspective view showing an example of the heat storage board concerning. In the heat storage board, the aluminum laminate film 1
One or more aluminum foils 3 are inserted between the heat storage body 2 and the heat storage body 2. When the aluminum foil 3 is inserted, there are two or more aluminum foils including the aluminum layer 11 of the aluminum laminate film 1, so that each of the aluminum foils melts during surface combustion of the heat storage board. It takes time to do. An air layer 4 is present between the aluminum laminate film 1 and the aluminum foil 3. Due to the presence of this air layer 4, the inserted aluminum foil 3 requires time for the heat transfer rate during combustion, and it takes time for the inserted aluminum foil 3 to reach the melting temperature. Further, since the aluminum foil 3 has a high reflectance, it is possible to reduce heat conduction due to radiation. Therefore, the larger the number of aluminum foils 3 to be inserted, the more the flame retardancy is improved. The aluminum foil 3 to be inserted is preferably a mirror surface.

As shown in the figure, the inserted state of the aluminum foil 3 may be only between the upper surface and the lower surface of the plate-shaped heat storage body 1 or may cover the entire heat storage body 2 in a bag shape (not shown). No),
It is not limited as long as it has the above-mentioned action.

Further, as shown in FIG. 4, in the inserted aluminum foil 3, if the aluminum foil 3 adjacent to the heat storage body 2 and the heat storage body 2 are in close contact with each other, the same function as in the case of the above claim 1 is obtained. As a result, the heat of combustion is absorbed by the heat storage body 2, so the start of flame burning can be delayed, and flame retardancy is further improved.

The heat storage board has the same effects as the heat storage board according to claim 1 in terms of the layer structure of the aluminum laminate film 1, the constituent material of the reinforcing layer 12, and the sealing portion 5. The adhesive layer 13 of the aluminum laminate film 1 may have a function of easily heat-sealing the aluminum laminate film 1 to each other during bag processing by thermocompression bonding.

Next, a heat storage board according to claim 6 of the present invention will be described. FIG. 9 is a sectional view showing an example of a heat storage board according to claim 6 of the present invention. The heat storage board covers the entire surface of the heat storage body 2 with an aluminum laminate film 1,
An air layer 4 between the aluminum laminate film 1 and the heat storage body 2.
Have. In the heat storage board of the present invention, the layer structure of the aluminum laminate film 1 is limited in order from the outer layer to the aluminum layer 11, the reinforcing layer 12, and the adhesive layer 13. With these configurations, even when the air layer 4 is provided between the aluminum laminate film 1 and the heat storage body 2, the aluminum layer 11 is formed as an outer layer during combustion.
Therefore, the heat storage board is made difficult to burn, and the radiant heat due to heating is easily reflected by aluminum, so that the temperature rise of the aluminum laminate film 1 is delayed. as a result,
The heat storage board can maintain good flame retardancy. Further, as for the seal portion 5, when the seal portion 5 is in the double-folded state like the heat storage board according to claim 1, the seal portion 5 is less likely to come off during the surface combustion, as compared with the state in which the seal portion 5 is bent once. It is preferable in that the flame retardancy is further improved. The constituent material of the reinforcing layer 12 of the aluminum laminate film 1 is exemplified by the same material as described in claim 1 above.

Next, a heat storage board according to claim 9 of the present invention will be described. Similar to the heat storage board according to claim 7, the heat storage board covers the entire surface of the heat storage body 2 with an aluminum laminate film 1 as shown in FIG. 9, and an air layer is formed between the aluminum laminate film 1 and the heat storage body 2. Have 4. In the heat storage board of the present invention, the sealing portion 5 of the aluminum laminate film 1 is double-folded, and the layer structure of the aluminum laminate film 1 is, as shown in FIG. 5, a reinforcement layer 12 and an aluminum layer 11 from the outer layer. , The adhesive layer 13 are laminated in this order, and the constituent material of the reinforcing layer 12 is at least one selected from acrylic resin and silicon resin. With these configurations, the aluminum laminated film 1
Even if the air layer 4 is provided between the heat storage body 2 and the heat storage body 2, since the reinforcing layer 12 does not turn black due to the heat applied during the surface combustion of the heat storage board, the increase in the heat absorption rate is small. In addition, the seal portion 5 does not easily come off during surface combustion. As a result, the heat storage board can maintain good flame retardancy.

[0029]

In the heat storage board according to claim 1 of the present invention, since the aluminum laminate film 1 and the heat storage body 2 are in close contact with each other, the heat applied to the heat storage board at the time of combustion is accumulated from the aluminum laminate film 1. To reach body 2 quickly,
The temperature rise of the aluminum laminate film 1 can be slowed down.

Since the heat storage board according to claim 2 of the present invention has one or more aluminum foils 3 inserted between the aluminum laminate film 1 and the heat storage body 2, the aluminum layer 11 of the aluminum laminate film 1 is also included. Since there are two or more aluminum foils, it takes time for each aluminum foil to melt during surface combustion of the heat storage board.
Since the aluminum foil 3 has high reflectance, it reduces heat conduction due to radiation.

In the heat storage board according to claim 3 of the present invention, in particular, among the inserted aluminum foils 3, the aluminum foil 3 adjacent to the heat storage body 2 and the heat storage body 2 are in close contact with each other. Since it is absorbed by the heat storage body 2, the start of flame burning can be delayed.

In the heat storage board according to the fourth aspect of the present invention, in addition to the above-mentioned function, the aluminum laminate film 1 is constituted by the reinforcing layer 12, the aluminum layer 11 and the adhesive layer 13 in this order from the outer layer. The aluminum is not easily scratched during the process.

In addition to the above effects, the heat storage board according to claim 5 of the present invention has a layer structure in which the aluminum laminate film 1 has an aluminum layer 11 as an outer layer, so that the surface of the heat storage board is less likely to burn during combustion. At the same time, the radiant heat due to heating is easily reflected by the aluminum, which slows the temperature rise of the aluminum laminate film 1.

The heat storage board according to claim 6 of the present invention has an aluminum laminate film 1 and a heat storage body 2 depending on its configuration.
Even when the heat storage board has an aluminum layer 11 as an outer layer when the heat storage board burns even if it has an air layer 4 between them, it is difficult to burn, and the radiant heat due to heating is easily reflected by the aluminum laminated film 1. Slow down the temperature rise.

In the heat storage board according to the seventh aspect of the present invention, in addition to the above-mentioned action, since the constituent material of the reinforcing layer 12 is at least one selected from acrylic resin and silicon resin, the heat applied during combustion is applied. As a result, the reinforcing layer 12 does not turn black, and the increase in heat absorption rate can be reduced.

In the heat storage board according to the eighth aspect of the present invention, in addition to the above-described action, the sealing portion 5 of the aluminum laminate film 1 is double-folded, so that the sealing portion 5 is unlikely to come off during surface combustion.

The heat storage board according to claim 9 of the present invention has an aluminum laminate film 1 and a heat storage body 2 depending on its configuration.
Even if the air layer 4 is provided between, the reinforcing layer 12 does not turn black due to the heat applied during the surface combustion of the heat storage board, so that the increase in the heat absorption rate can be reduced, and further, The seal portion 5 is unlikely to come off during surface combustion.

[0038]

EXAMPLES Examples of the present invention and comparative examples will be described below. The heat storage body 2 used in the examples and comparative examples uses paraffin wax as a hydrocarbon and a mixture of ethylene-propylene elastomer and high density polyethylene as a resin. These materials are melt-kneaded and then cooled and molded to have a thickness of 1
It was produced in a plate shape of 5 mm. The flame retardancy test of the heat storage boards of Examples and Comparative Examples is a 6-minute surface combustion test based on JIS-A-1321, and the level of flame retardance is a flame retardant class 2 pass, a flame retardant class 3 pass, and It was judged as flame retardant grade 3 failure.

Example 1 As an aluminum laminate film 1, from the outer layer to the reinforcing layer 1
2, the aluminum layer 11, and the adhesive layer 13 were laminated in this order. The reinforcing layer 12 is polyethylene terephthalate (hereinafter referred to as PET), and the aluminum layer 11 has a thickness of 30.
The aluminum foil having a thickness of μm and the adhesive layer 13 were composed of a film of LLDPE. The aluminum laminate film 1 was processed into a bag shape, the heat storage body 2 was inserted, and then thermocompression bonding was performed for 5 seconds with a heat press at 150 ° C., so that the entire surface of the heat storage body 2 was adhered to the aluminum laminate film 1. The seal portion 5 of the aluminum laminate film 1 was bent once. When the flame retardancy test of the obtained heat storage board was conducted,
Flame-retardant grade 3 was passed.

Example 2 As the aluminum laminate film 1, from the outer layer to the reinforcing layer 1
2, the aluminum layer 11, and the adhesive layer 13 were laminated in this order. The reinforcing layer 12 is PET, the aluminum layer 11
Was composed of an aluminum foil having a thickness of 30 μm, and the adhesive layer 13 was composed of an LLDPE film. After the aluminum laminate film 1 is processed into a bag shape and the heat storage body 2 is put therein, the upper surface and the lower surface of the heat storage body 2 have the same thickness 3 as the upper and lower surfaces.
The aluminum foil 3 of 0 μm was inserted one by one, and the inlet of the aluminum laminate film 1 was heat-sealed. The seal portion 5 was in a state of being bent once. When the flame retardancy test of the obtained heat storage board was conducted, the flame retardancy class 3 passed.

Example 3 On the upper surface and the lower surface of the heat storage body 2, one aluminum foil 3 having a thickness of 30 μm and having the same area as the upper and lower surfaces of the heat storage body 2 is arranged, respectively, at 150 °
Then, the aluminum foil 3 and the heat storage body 2 were brought into close contact with each other by thermocompression bonding for 5 seconds. The same aluminum laminate film 1 as in Example 2 was used. Aluminum laminated film 1
Is processed into a bag shape, and after inserting the heat storage body 2 to which the aluminum foil 3 is closely adhered, one aluminum foil 3 having a thickness of 30 μm and having the same area as the upper and lower surfaces of the heat storage body 2 is inserted into the upper and lower surfaces of the heat storage body 2. Then
The inlet of the aluminum laminate film 1 was heat-sealed. The seal portion 5 was in a state of being bent once. When the flame retardancy test of the obtained heat storage board was conducted, the flame retardancy class 2 was passed.

Example 4 As the aluminum laminate film 1, from the outer layer to the reinforcing layer 1
2, the aluminum layer 11, and the adhesive layer 13 were laminated in this order. The reinforcing layer 12 is an acrylic resin, the aluminum layer 11 is an aluminum foil having a thickness of 50 μm, and the adhesive layer 13 is LLD.
It was composed of PE film. Example 2 other than the above
A heat storage board was produced in the same manner as. When the flame retardancy test of the obtained heat storage board was conducted, the flame retardancy class 2 was passed.

Example 5 As the aluminum laminate film 1, one having an aluminum layer 11, a reinforcing layer 12, and an adhesive layer 13 in this order from the outer layer was used. The aluminum layer 11 was made of an aluminum foil having a thickness of 30 μm, the reinforcing layer 12 was made of PET, and the adhesive layer 13 was made of LLDPE film. After that, a heat storage board was produced in the same manner as in Example 2. When the flame retardancy test of the obtained heat storage board was conducted, the flame retardancy class 2 was passed.

Example 6 As the aluminum laminate film 1, one having an aluminum layer 11, a reinforcing layer 12, and an adhesive layer 13 in this order from the outer layer was used. The aluminum layer 11 was made of an aluminum foil having a thickness of 30 μm, the reinforcing layer 12 was made of PET, and the adhesive layer 13 was made of LLDPE film. The aluminum laminate film 1 was processed into a bag shape, the heat storage body 2 was put therein, and then the inlet of the aluminum laminate film 1 was heat-sealed. The seal portion 5 was double-folded as shown in FIG. When the flame retardancy test of the obtained heat storage board was conducted, the flame retardancy class 3 passed.

Example 7 A heat storage board was produced in the same manner as in Example 6 except that the seal portion 5 of Example 6 was bent once. When the flame retardancy test of the obtained heat storage board was conducted, the flame retardance was 3
The grade passed.

Comparative Example 1 The same aluminum laminate film 1 as in Example 2 was used. The aluminum laminate film 1 was processed into a bag shape, the heat storage body 2 was put therein, and then the inlet of the aluminum laminate film 1 was heat-sealed. The seal portion 5 was in a state of being bent once. When the flame-retardant test of the obtained heat storage board was performed, the flame-retardant grade 3 was unacceptable.

[0047]

[Table 1]

Example 8 As the aluminum laminate film 1, from the outer layer to the reinforcing layer 1
2, the aluminum layer 11, and the adhesive layer 13 were laminated in this order. The reinforcing layer 12 is an acrylic resin, the aluminum layer 11 is an aluminum foil having a thickness of 50 μm, and the adhesive layer 13 is LLD.
It was composed of PE film. The aluminum laminate film 1 was processed into a bag shape, the heat storage body 2 was put therein, and then the inlet of the aluminum laminate film 1 was heat-sealed.
The seal portion 5 was double-folded as shown in FIG. When the flame retardancy test of the obtained heat storage board was conducted, the flame retardancy class 3 passed.

Comparative Example 2 A heat storage board was produced in the same manner as in Example 8 except that the seal portion 5 of Example 8 was bent once. When the flame retardancy test of the obtained heat storage board was conducted, the flame retardance was 3
The grade was unacceptable.

[0050]

[Table 2]

[0051]

The heat storage board according to claims 1 to 9 of the present invention is covered with the aluminum laminate film 1 to prevent hydrocarbons from flowing out from the heat storage body 2 and to have excellent workability.

According to the heat storage board of claim 1 of the present invention, in addition to the above effects, the heat applied to the heat storage board during combustion is quickly transferred from the aluminum laminate film 1 to the heat storage body 2. The temperature rise of the laminate film 1 can be delayed. As a result, the heat storage board retains good flame retardancy.

According to the heat storage board according to the second aspect of the present invention, in addition to the above effects, when the surface of the heat storage board is burnt,
It takes time for the aluminum foil to melt, and the aluminum foil 3 has a high reflectance, so that the conduction of heat due to radiation is reduced. As a result, the heat storage board retains good flame retardancy.

According to the heat storage board of claim 3 of the present invention, in particular, since the heat of combustion is absorbed by the heat storage body 2, the start of flame burning can be delayed, so that the flame retardancy is improved.

According to the heat storage board of claim 5 of the present invention, in addition to the above effects, the surface of the heat storage board is made difficult to burn during combustion, and radiant heat due to heating is easily reflected by aluminum, so that an aluminum laminate film is provided. Slow the temperature rise of 1. As a result, the flame retardancy of the heat storage board is improved.

According to the heat storage board of claim 6 of the present invention, in addition to the above effects, even if the air layer 4 is provided between the aluminum laminate film 1 and the heat storage body 2, the surface is hard to burn and The temperature rise of the laminate film 1 is slowed down. As a result, the heat storage board retains good flame retardancy.

According to the heat storage board of claim 7 of the present invention, in addition to the above effects, since the reinforcing layer 12 does not turn black due to the heat applied during combustion, the heat absorption rate is increased. Since it can be made smaller, flame retardancy is improved.

According to the heat storage board of the eighth aspect of the present invention, in addition to the above effects, the seal portion 5 is less likely to come off during surface combustion, so that the flame retardancy is improved.

According to the heat storage board of claim 9 of the present invention, in addition to the above effects, even if the air layer 4 is provided between the aluminum laminate film 1 and the heat storage body 2, the surface combustion of the heat storage board is prevented. Since the reinforcing layer 12 does not turn black due to the heat applied at that time, the increase in the heat absorption rate can be reduced, and the seal portion 5 is less likely to come off during surface combustion. As a result, the heat storage board retains good flame retardancy.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a heat storage board according to claim 1 of the present invention.

FIG. 2 is a sectional view showing an example of a heat storage board according to claim 2 of the present invention.

FIG. 3 is a perspective view showing an example of a heat storage board according to claim 2 of the present invention.

FIG. 4 is a cross-sectional view showing another example of the heat storage board according to claim 2 of the present invention.

FIG. 5 is a cross-sectional view of an essential part showing an example of the layer structure of the aluminum laminate film 1.

FIG. 6 is a cross-sectional view of an essential part showing another example of the layer structure of the aluminum laminate film 1.

FIG. 7 is an explanatory view showing a seal portion 5 of the aluminum laminate film 1.

8A and 8B are aluminum laminated films 1;
It is explanatory drawing which showed the seal part 5.

FIG. 9 is a sectional view showing an example of a heat storage board according to claim 6 or 9 of the present invention.

[Explanation of symbols]

 1, 1a, 1b Aluminum laminated film 2 Heat storage body 3 Aluminum foil 4 Air layer 5 Sealing portion 11 Aluminum layer 12 Reinforcing layer 13 Adhesive layer

Claims (9)

[Claims] 1. A heat storage board obtained by coating the entire surface of a heat storage body (2) having a resin supporting hydrocarbons with an aluminum laminate film (1), wherein the aluminum laminate film (1) and the heat storage body (2). A heat storage board characterized by being closely attached to each other. 2. A heat storage board obtained by coating the entire surface of a heat storage body (2) having a resin supporting hydrocarbons with an aluminum laminate film (1), the aluminum laminate film (1) and the heat storage body (2). A heat storage board characterized in that one or more aluminum foils (3) are inserted between them. 3. The inserted aluminum foil (3) according to claim 2, wherein the aluminum foil (3) adjacent to the heat storage body (2) and the heat storage body (2) are in close contact with each other. Item 2. The heat storage board according to item 2. 4. The aluminum laminate film (1)
The heat storage board according to any one of claims 1 to 3, wherein the heat storage board comprises a reinforcing layer (12), an aluminum layer (11), and an adhesive layer (13) in that order from the outer layer. 5. The aluminum laminate film (1)
The heat storage board according to any one of claims 1 to 3, wherein the heat storage board comprises an aluminum layer (11), a reinforcing layer (12), and an adhesive layer (13) in that order from the outer layer. 6. A heat storage board obtained by coating the entire surface of a heat storage body (2) having a resin supporting hydrocarbons with an aluminum laminate film (1), wherein the aluminum laminate film (1) is an aluminum layer rather than an outer layer. A heat storage board comprising (11), a reinforcing layer (12), and an adhesive layer (13) in this order. 7. The heat storage board according to claim 4, wherein a constituent material of the reinforcing layer (12) is at least one selected from acrylic resin and silicon resin. 8. The heat storage board according to claim 1, wherein the sealing portion (5) of the aluminum laminate film (1) is double-folded. 9. A heat storage board obtained by coating the entire surface of a heat storage body (2) having a resin supporting hydrocarbons with an aluminum laminate film (1), wherein a sealing portion (5) of the aluminum laminate film (1). Is a double fold,
In addition, the aluminum laminate film (1) has a reinforcing layer (12), an aluminum layer (11), and an adhesive layer (13) from the outer layer.
And the reinforcing layer (12).
2. The heat storage board, wherein the constituent material is at least one selected from acrylic resin and silicone resin.