JPH07198153A - Insulating panel for heating and manufacture thereof - Google Patents

Abstract

PURPOSE:To decrease heat loss and manufacturing costs of a heating panel by providing an insulating panel for heating, suitable for the heating panel for heating floors in a house. CONSTITUTION:An insulating panel is formed by sticking a heat diffusing metallic foil body 12 having stretchability on an insulating base plate 11 made of foamed polystyrene or foamed polyolefine having heat resistance, and by forming heat source body fitting grooves 13 on the front surface of the metallic foil body 12. Since the metallic foil body 12 is previously stuck on the insulating board 11, a heating panel obtained by embedding heat source bodies 18 into the heat source body fitting grooves 13 of the insulating panel, and by sticking a heat sink 19 on the metallic foil body 12 can be easily assembled, and the manufacturing cost is low. Moreover, since the metallic foil body 12 has stretchability, adhesion of the heat source bodies 18 to the heat source body fitting grooves 13 is good, and the efficiency of heat transfer is excellent, moreover little occurs heat loss. Moreover, since the insulating board 11 is made of foamed polystyrene or foamed polyolefine, it can be recycled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulation panel used for a heating panel for heating a floor or the like of a house and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, various heating panels have been provided for heating a floor of a house or the like. Typical examples thereof are shown in FIGS. 13 and 14. In the heating panel shown in FIG. 13, a heat source body 3 such as a hot water pipe is embedded in a heat source body fitting groove 2 formed on the surface of a metal foil 1 for heat diffusion made of aluminum, copper or the like, and then the surface of the metal foil 1 is formed. Is adhered to the back surface of the heat dissipation plate 4 made of a steel plate, a wood plate, or the like, and then polyurethane foam is injected to foam the heat insulating substrate 5. In the heating panel shown in FIG. 14, the heat source body 3 is embedded in the heat source body fitting groove 7 formed on the surface of the heat insulating substrate 6 made of heat-resistant expanded polystyrene or polyolefin, and then the heat insulating body 6 is formed. Aluminum on the surface,
After attaching the metal foil 8 for heat diffusion made of copper or the like, the metal foil 8
The heat dissipation plate 4 is attached to the surface of the.

[0003]

However, in the heating panel shown in FIG. 13, not only is the cost high because of the large number of processes required for processing and assembling, but also the lack of stretchability of the metal foil 1 and the unevenness of foaming of polyurethane foam. As a result, the adhesiveness between the heat source body 3 and the metal foil 1 deteriorates, the heat transfer efficiency from the heat source body 3 to the metal foil 1 decreases, and the heat loss increases, and furthermore, the polyurethane foam cannot be recycled. There is. In addition, the heating panel shown in FIG. 14 has a drawback that the contact area between the heat source body 3 and the metal foil 8 is small and the heat transfer efficiency is low because the metal foil 8 is arranged on the upper surface of the heat source body 3. It is an object of the present invention to improve the conventional heating panel and the manufacturing method thereof so as to eliminate the above-mentioned problems.

[0004]

In order to achieve the above object, a heat insulating panel for heating according to the first invention (claim 1).
Is a heat-insulating substrate made of heat-resistant expanded polystyrene or polyolefin, and a heat-diffusing metal foil for heat diffusion is attached to the heat-insulating substrate, and a heat-source-fitting groove is formed on the surface of the metal foil. It is configured. The elastic metal foil for heat diffusion has a plurality of strip-shaped metal foil pieces arranged in parallel along the heat source body fitting groove and a polyolefin film laminated on the back surface (claim 2). ), Or a laminate of a polyolefin film on the back surface of the metal foil body provided with a plurality of cuts along the heat source body fitting groove (claims 3 and 4).

Further, the second to fourth inventions are a method of manufacturing a heat insulating panel for heating of the first invention. In the manufacturing method of the second invention (claim 5), a heat-diffusing metal foil body for heat diffusion is mounted in a mold for in-mold foam molding, and the surface of the metal foil body is subjected to vacuum or pressure operation. After forming a heat source body fitting groove in the mold, a heat-insulating substrate is formed by filling the mold with pre-expanded particles made of heat-resistant polystyrene or polyolefin and molding the mixture at the same time as forming the heat-insulating substrate on the heat-insulating substrate. This is a method of thermally adhering a metal foil body having a heat source body fitting groove.

Further, according to the manufacturing method of the third aspect of the present invention (claim 6), after laying a stretchable metal foil for heat diffusion on a heat insulating substrate made of heat-resistant expanded polystyrene or expanded polyolefin. A method for forming a heat source body fitting groove on the surface of the metal foil body at the same time as thermally bonding the metal foil body on the heat insulating substrate by a heat and pressure operation.

Furthermore, the manufacturing method of the fourth invention (claim 7)
The description) forms a heat source body fitting groove on the surface of a heat-diffusing metal foil for heat diffusion, and the heat source body fitting groove on the surface of a heat insulating substrate made of heat-resistant expanded polystyrene or expanded polyolefin. Forming a recessed groove into which the back surface of the heat-insulating substrate is fitted, laying the metal foil body on the heat-insulating substrate, and fitting the back surface of the heat-source-body-fitting groove into the recessed groove, and then applying heat and pressure to the heat-insulating substrate. It is a method of thermally bonding a metal foil body having the heat source body fitting groove thereon. The heat insulating substrate and the metal foil body may be bonded by an adhesive instead of heat bonding by a hot pressing operation (claim 8).

[0008]

In the heat insulating panel for heating according to the first aspect of the invention, since the metal foil body has elasticity, it is possible to form the heat source body fitting groove having good adhesion with the heat source body in the metal foil body. it can. Further, since the heat insulating substrate is made of expanded polystyrene or expanded polyolefin, it can be recycled. Then, the metal foil body having a configuration in which a plurality of strip-shaped metal foil pieces are arranged in parallel is provided with elasticity by expansion and contraction of the polyolefin film between the metal foil pieces, and a metal foil body having a configuration in which a plurality of slits are provided. Is stretched by stretching the polyolefin film at each cut. In this case, the cut can be penetrated through the polyolefin film and the stretchability can be imparted by opening and closing the cut.

When manufacturing the heat insulating panel for heating,
According to the manufacturing method of the second invention, the heat source body fitting groove is formed, the heat insulating substrate is formed, and the heat insulating substrate and the metal foil body are heat-bonded almost at the same time in the same mold, and therefore, the heat insulating panel can be manufactured. It requires less man-hours and cost.

Further, according to the manufacturing method of the third invention, since the heat insulating substrate and the metal foil body are heat-bonded and the heat source body fitting groove is formed at the same time, the number of man-hours and the cost for manufacturing the heat insulating panel are reduced. .

Further, according to the manufacturing method of the fourth invention, the heat insulating substrate and the metal foil body are fitted together after the back surface of the heat source body fitting groove formed in the metal foil body is fitted into the concave groove formed in the heat insulating substrate. Since heat bonding is performed, it is possible to obtain a heat source body fitting groove having good adhesion to the heat source body. In addition, the heat insulating substrate and the metal foil body may be bonded together with an adhesive.

[0012]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a sectional view showing an embodiment of a heat insulating panel for heating according to the present invention. As shown in the figure, this heat insulating panel is formed by adhering a metal foil body 12 for heat diffusion on a heat insulating substrate 11 and forming a heat source body fitting groove 13 on the surface of the metal foil body 12.

The heat insulating substrate 11 is a foamed molded product made of a heat-resistant polystyrene-based resin or a polyolefin-based resin such as polyethylene, polypropylene, or a copolymer resin of these.

As shown in FIG. 2, the heat-diffusion metal foil body 12 has a plurality of strip-shaped metal foil pieces 14 made of aluminum, copper or the like arranged side by side along the heat source body fitting groove 13 and polyethylene on the back surface thereof. As a structure in which a polyolefin film 15 such as polypropylene is laminated, stretchability is imparted by stretching the polyolefin film 15 between the metal foil pieces 14. However, as another embodiment, as shown in FIG. 3, a plurality of cuts 16 are formed in the heat source body fitting groove 1.
As a configuration in which the polyolefin film 15 is laminated on the back surface of the metal foil body 17 provided along the line 3,
Stretchability may be imparted by stretching the polyolefin film 15 at each cut 16. In this case, the cut may be provided so as to penetrate the polyolefin film, and the stretchability may be imparted by opening and closing the cut.

In the heat source body fitting groove 13, a heat source body 18 such as a hot water pipe, which will be described later, is buried, and the metal foil body 1 is inserted from the heat source body 18.
It is a concave groove for transferring heat to 2 (see FIG. 4).

In order to manufacture the heating panel by applying the heat insulating panel having the above-mentioned structure, as shown in FIG. 4, the heat source body 18 such as a hot water pipe is buried in the heat source body fitting groove 13, and the illustration is omitted. After fixing the heat source body 18 to the fitting groove 13 by providing an undercut portion in the fitting groove 13, a heat radiating plate 19 made of a steel plate, a wooden board or the like is attached to the surface of the metal foil body 12 with an adhesive or the like. do it. The heating panel thus obtained is easy to assemble because the metal foil body 12 is attached to the heat insulating substrate 11 in advance, and since the metal foil body 12 has elasticity, Adhesion with the heat source fitting groove 13 is good, heat transfer efficiency is excellent, and since the heat insulating substrate 11 is made of expanded polystyrene or expanded polyolefin, it can be recycled.

In the conventional heating panel as shown in FIG. 14, when the heat insulating substrate 6 and the metal foil 8 are adhered to each other by heat bonding, the shrinkage amount of the heat insulating substrate 6 after heat bonding is smaller than that of the metal foil 8. Is also large, the heat insulating substrate 6 may warp in a convex shape. However, in the heating panel of the present invention, since the metal foil body 12 has elasticity, the metal foil body 12 has the heat insulating substrate 11.
There is no possibility that the heat insulating substrate 11 will warp and warp.

Next, a method of manufacturing the heat insulating panel having the above structure will be described with reference to FIGS. 5 to 7 are process diagrams showing an embodiment of the manufacturing method. In this manufacturing method, first, as shown in FIG. 5, a heat-diffusing metal foil body 12 having elasticity is provided in an in-mold foam molding die 21 including a cavity die 22 and a core die 23. The metal foil piece 14 is mounted so as to face the core mold 23. Core mold 23
Has a ridge 24 for molding the heat source body fitting groove 13 on the surface. Next, as shown in FIG. 6, after heating at room temperature or if necessary, vacuum or compressed air operation is performed to perform the metal foil body 1.
2 is pressed against the core mold 23, and the metal strip 1 is formed by the ridges 24.
The heat source body fitting groove 13 is formed on the surface of 2. Finally, Figure 7
As shown in FIG. 5, the heat-insulating substrate 11 is molded at the same time as the heat-insulating substrate 11 is molded by filling the mold 21 with the pre-expanded particles 25 made of heat-resistant polystyrene or polyolefin and performing heat-molding. The metal foil body 12 provided with is heat-bonded. At that time, the polyolefin film 15 of the metal foil body 12 acts as an adhesive. Thus,
The insulating panel shown in FIG. 1 is obtained. According to this manufacturing method,
Since the heat source body fitting groove 13 is formed, the heat insulating substrate 11 is formed, and the heat insulating substrate 11 and the metal foil body 12 are thermally bonded in the mold 21 almost at the same time, the number of manufacturing steps and cost can be reduced. 5 to 7, the vapor holes, the feeder for filling the pre-expanded particles, etc. are omitted.

FIG. 8 is a process drawing showing another embodiment of the manufacturing method. In this manufacturing method, as shown in FIG. 8, first, a heat insulating substrate 11 made of heat-resistant expanded polystyrene or expanded polyolefin that has been foam-molded in advance is mounted on the lower mold 27 of the heat press 26, and The metal foil body 12 for heat diffusion having elasticity is laid. The upper mold 28 of the heat press 26 is provided with a ridge 29 for molding the heat source body fitting groove 13 on the surface. Next, as shown in FIG. 9, the metal foil body 12 is pressed against the heat insulating base material 11 by performing a hot pressing operation with the upper mold 28, and the metal foil body 12 is thermally bonded onto the heat insulating substrate 11, and at the same time, the ridges are formed. The heat source body fitting groove 13 is formed on the surface of the metal foil body 12 by 29. At that time, the polyolefin film 15 of the metal foil body 12 acts as an adhesive. Thus, the heat insulation panel shown in FIG. 1 is obtained. According to this manufacturing method, the heat insulating substrate 11 and the metal foil body 12 are thermally bonded and the heat source body fitting groove 13 is formed at the same time, so that the manufacturing process and cost are reduced.

FIG. 10 is a process drawing showing still another embodiment of the manufacturing method. In this manufacturing method, first, as shown in FIG.
As shown in 0, the metal foil body 12 for heat diffusion having elasticity
The heat source body fitting groove 13 is formed on the surface of the heat source body, and the rear surface of the heat source body fitting groove 13 is fitted into the surface of the heat insulating substrate 11 made of foamed polystyrene or foamed polyolefin that has been foam-molded in advance. 30 is formed. Next, as shown in FIG. 11, the lower mold 3 of the heat press 31 is
The heat insulating board 11 is mounted on the heat insulating board 11, the metal foil body 12 is laid on the heat insulating board 11, and the back surface of the heat source body fitting groove 13 is fitted into the concave groove 30. The upper mold 33 of the heat press 31 is the heat press 2
Unlike the upper mold 28 of 6, the surface is smooth. Finally, as shown in FIG. 12, a heat pressing operation is performed by the upper mold 33 to press the metal foil body 12 against the heat insulating substrate 11, and the metal foil body 12 is thermally bonded onto the heat insulating substrate 11. At that time, the polyolefin film 15 of the metal foil body 12 acts as an adhesive. Thus, the heat insulation panel shown in FIG. 1 is obtained. According to this manufacturing method, since the heat source body fitting groove 13 is formed before the heat insulating substrate 11 and the metal foil body 12 are thermally bonded together, the heat source body fitting groove 13 when the heat insulating panel is applied to a heating panel.
And the heat source body 18 have good adhesion. Note that the heat insulating substrate 11 and the metal foil body 12 may be bonded by an adhesive instead of heat bonding.

[0021]

As described above, the heat insulating panel of the present invention uses the heat-diffusing metal foil for heat diffusion, so that the heat source fitting groove having good adhesion to the heat source is provided. It can be formed on the metal foil body. Therefore, the heating panel to which this heat insulating panel is applied has excellent heat transfer efficiency from the heat source body to the metal foil body and has very little heat loss. Further, in this heat insulating panel, the metal foil body is adhered on the heat insulating substrate in advance, so that the heating panel can be easily assembled and the manufacturing cost can be reduced. Furthermore, since the heat insulating substrate is made of expanded polystyrene or expanded polyolefin,
It can be recycled. On the other hand, according to the manufacturing method of the present invention, the heat insulating panel can be manufactured with a small number of steps and a low cost.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a heat insulating panel for heating according to the present invention.

FIG. 2 is a perspective view showing an example of a metal foil body for heat diffusion used in the heat insulating panel for heating of the present invention.

FIG. 3 is a perspective view showing another embodiment of the metal foil for heat diffusion used in the heat insulating panel for heating of the present invention.

FIG. 4 is a cross-sectional view of a heating panel to which the heating insulating panel of the present invention is applied.

FIG. 5 is a process drawing showing an embodiment of the manufacturing method of the present invention.

FIG. 6 is a process drawing showing an example of the manufacturing method of the present invention.

FIG. 7 is a process drawing showing an example of the manufacturing method of the present invention.

FIG. 8 is a process drawing showing another embodiment of the manufacturing method of the present invention.

FIG. 9 is a process drawing showing another embodiment of the manufacturing method of the present invention.

FIG. 10 is a process drawing showing still another embodiment of the manufacturing method of the present invention.

FIG. 11 is a process drawing showing still another embodiment of the manufacturing method of the present invention.

FIG. 12 is a process drawing showing still another embodiment of the manufacturing method of the present invention.

FIG. 13 is a cross-sectional view showing a conventional heating panel.

FIG. 14 is a cross-sectional view showing a conventional heating panel.

[Explanation of symbols]

11 Heat Insulation Substrate 12 Metal Foil Body for Heat Diffusion 13 Heat Source Body Fitting Groove 14 Thin Band Metal Foil Piece 15 Polyolefin Film 16 Cut 17 Metal Foil Body 21 Mold for In-Mold Foam Molding 25 Prefoamed Particles 30 Recessed Groove

Claims (8)

[Claims] 1. A heat-diffusing metal foil for heat diffusion is adhered to a heat insulating substrate made of heat-resistant expanded polystyrene or expanded polyolefin, and a heat source fitting groove is formed on the surface of the metal foil. Insulation panel for heating. 2. The stretchable metal foil for heat diffusion is one in which a plurality of strip-shaped metal foil pieces are arranged in parallel along the heat source body fitting groove, and a polyolefin film is laminated on the back surface. Item 1. A heat insulating panel for heating according to item 1. 3. The stretchable metal foil body for heat diffusion is obtained by laminating a polyolefin film on the back surface of a metal foil body provided with a plurality of slits along the heat source body fitting groove. The heat insulation panel for heating according to 1. 4. The heat insulating panel for heating according to claim 3, wherein a cut is provided so as to penetrate the polyolefin film. 5. A heat-diffusion metal foil body having elasticity is mounted in an in-mold foam molding die, and a heat source body fitting groove is formed on the surface of the metal foil body by vacuum or pressure operation. A metal foil provided with the heat source body fitting groove on the heat insulating substrate at the same time as forming the heat insulating substrate by filling the mold with pre-expanded particles of heat-resistant polystyrene or polyolefin and performing heat molding A method of manufacturing a heat insulating panel for heating, characterized in that the body is heat-bonded. 6. A heat spreadable metal foil for heat diffusion is laid on a heat insulating substrate made of heat-resistant expanded polystyrene or polyolefin, and then the metal foil is applied on the heat insulating substrate by hot pressing. A method for manufacturing a heat insulating panel for heating, characterized in that a heat source body fitting groove is formed on the surface of the metal foil body at the same time as heat bonding. 7. A heat source body fitting groove is formed on the surface of a stretchable metal foil for heat diffusion, and the heat source body fitting is formed on the surface of a heat insulating substrate made of heat-resistant expanded polystyrene or expanded polyolefin. After forming a concave groove into which the back surface of the groove fits, laying the metal foil body on the heat insulating substrate and fitting the back surface of the heat source body fitting groove into the concave groove, the heat insulation is performed by a heat and pressure operation. A method for manufacturing a heat insulating panel for heating, comprising: thermally bonding a metal foil body having the heat source body fitting groove on a substrate. 8. The method for producing a heat insulating panel for heating according to claim 7, wherein the heat insulating substrate and the metal foil body are bonded by an adhesive instead of heat bonding by a hot pressing operation.