JP2000030841A - Floor heating panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive floor heating panel capable of reducing the cost for a sheet material having a self-fire extinguishing property and its adhesive. SOLUTION: A heater wire 3 and a wiring section are installed on the upper face of a panel base material 2, and the back face of the panel base material 2 is covered with sheet materials to form a floor heating panel 1. A sheet material 8 having a self-fire extinguishing property is stuck to a back face portion corresponding to the wiring section within the back face of the panel base material 2, and a sheet material 9 having no self-fire extinguishing property is stuck to the remaining back face portion. The sheet materials 8, 9 are stuck by the same adhesive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor heating panel, and more particularly, to a structure of a back sheet which is effective against heat generation in a wiring portion.

[0002]

2. Description of the Related Art Conventionally, a floor heating panel in which a heater wire and a connector are provided on an upper surface of a panel base material and a back surface of the panel base material is covered with a sheet material is known. This sheet material is affixed to the back of the panel base material in order to eliminate the risk of fire due to poor contact at the wiring part with the connector. Conventionally, a sheet material having self-extinguishing properties is bonded to the entire back surface of the panel base material.

[0003]

However, the self-extinguishing sheet material is generally expensive, and the adhesive for bonding it is also expensive. In the case where a self-extinguishing sheet material is adhered, there is a problem that the cost is increased.

The present invention has been made in view of the above points, and an object thereof is to provide an inexpensive floor heating panel capable of reducing the cost of a self-extinguishing sheet material and its adhesive. Another object of the present invention is to provide a floor heating panel capable of increasing the strength in addition to the flame retardant performance of a sheet material having a self-extinguishing property. An object of the present invention is to provide a floor heating panel which can easily prevent the sheet material having a two-layer structure from being warped and can easily perform an assembling process.

[0005]

In order to solve the above-mentioned problems, according to the present invention, a heater wire 3 and a wiring portion 4 are provided on an upper surface of a panel substrate 2, and the back surface of the panel substrate 2 is covered with a sheet material. In the floor heating panel as described above, the back surface portion 2a corresponding to the wiring portion 4 in the back surface of the panel base material 2 is covered with a sheet material 8 having self-extinguishing properties, and the remaining back surface portion 2b is a sheet without self-extinguishing properties Material 9, and both sheet materials 8,
9 is a back surface portion 2a, 2 of the panel substrate 2 using the same adhesive.
b. With this configuration, a self-extinguishing sheet material 8 is used to form the wiring portion 4 on the rear surface portion 2a corresponding to the wiring portion 4.
The risk of ignition due to poor contact of the
In addition, by attaching a relatively inexpensive sheet material 9 having no self-extinguishing property to the remaining back surface portion 2b, the material cost can be reduced, and the sheet materials 8, 9 can be panel-mounted with the same adhesive. By adhering to the back surfaces 2a and 2b of the material 2, the cost of the adhesive can be reduced.

Further, the sheet material 8 having self-extinguishing properties is provided.
However, it is preferable that the aluminum hydroxide paper 8a and the polypropylene resin layer 8b are laminated, and in this case, the aluminum hydroxide paper 8a improves the flame retardancy and has low strength. By laminating the polypropylene resin layer 8b on 8a, the strength of the aluminum hydroxide paper 8a can be increased.

Further, it is preferable that the cross-sectional shape of the sheet material 8 having the above-mentioned laminated structure is formed in an uneven shape for preventing warpage.
In this case, even if the sheet material 8 has a two-layer structure of the aluminum hydroxide paper 8a and the polypropylene resin layer 8b, the cross section can be made uneven so that the warpage can be prevented.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below. As shown in FIGS.
For example, a heater wire 3 is provided on the surface of a panel base material 2 composed of a 8.1 mm thick rock wool board 11 and a plywood frame material 20.
And a connector 5 are provided, and on the upper surface thereof, a surface material 13 having a thickness of, for example, 3.7 mm is provided via an aluminum foil 12.
Are laminated. On the other hand, of the back surface of the panel substrate 2, the back surface portion 2a corresponding to the wiring portion 4 is covered with a sheet material 8 having self-extinguishing property, and the remaining back surface portion 2b is covered with a sheet material 9 having no self-extinguishing property. And these two sheet materials 8,
9 is a back surface portion 2a, 2 of the panel substrate 2 using the same adhesive.
b.

The panel base member 2 is formed, for example, in a rectangular shape in plan view, and has a connector housing groove 7 for housing the connector 5 on the upper surface on one end side in the longitudinal direction, and a heater on the remaining upper surface portion. Heater wire storage groove 6 for storing wire 3
Are formed. The connection end of the heater wire 3 is electrically connected to an external power supply via a connector 5 housed in a connector housing groove 7. The entire upper surface of the heater wire 3 is covered with the aluminum foil 12 in a state where the heater wire 3 is stored in the heater wire storage groove 6, and the heat from the heater wire 3 to the surface layer plate is covered by the aluminum foil 12. Uniform conduction is achieved. In FIG. 1, reference numeral 14 denotes an overheating prevention device, and reference numeral 15 denotes a storage recess of the overheating prevention device 14.

Here, as the sheet material 8 having self-extinguishing properties, as shown in FIG.
(Hereinafter referred to as “PP”)
Layer 8b ". ) Is laminated so as to cover the back surface 2a of the wiring portion 4 having the connector 5, and the surface of the aluminum hydroxide paper 8a (the PP layer 8b and the Is applied to the back surface portion 2a of the panel substrate 2 by applying an adhesive 10 to the opposite surface).

On the other hand, as the sheet material 9 having no self-extinguishing property attached to the back surface portion 2b of the panel substrate 2, for example, a general kraft paper 9a having a thickness of 0.2 mm is used. The kraft paper 9a is formed on the back surface portion 2 of the panel base material 2 using an adhesive for kraft paper, for example, a vinyl acetate adhesive.
a. The vinyl acetate-based adhesive is also suitable for bonding the aluminum hydroxide paper 8a. By using the vinyl acetate-based adhesive, both the kraft paper 9a and the aluminum hydroxide paper 8a are Part 2
a, 2b.

The self-extinguishing aluminum hydroxide paper 8a is adhered only to the back surface portion 2a corresponding to the wiring portion 4 of the back surface of the panel base material 2, and the generally inexpensive craft Since the paper 9a is adhered, the connector 5 is not used due to the flame retardancy of the aluminum hydroxide paper 8a.
It is possible to eliminate the possibility of ignition due to poor contact of the wiring portion 4 having a problem. Therefore, it is not necessary to attach an expensive non-combustible sheet to the entire back surface of the panel substrate 2 as in the related art.
Material costs can be reduced.

In the present embodiment, the aluminum hydroxide paper 8a as the non-combustible paper has a two-layer structure in which the PP layer 8b is laminated.
In addition to the increase in flame retardancy, the strength of the aluminum hydroxide paper 8a having low strength can be increased by the PP layer 8b. Moreover, this aluminum hydroxide paper 8
Since a can be bonded with a vinyl acetate adhesive for kraft paper, the kraft paper 9a and the aluminum hydroxide paper 8a are bonded to the back surface portions 2a, 2a of the panel substrate 2 with the same adhesive.
b can be attached to each other, the cost of the adhesive can be reduced, and the cost can be further reduced.

As another example of the self-extinguishing sheet material 8, for example, pulp paper impregnated with PVA (polyvinyl alcohol) may be used.
By impregnating with PVA, the strength of pulp paper and the flame retardancy can be increased.

FIG. 4 shows a case in which a sheet material 8 having a two-layer structure of a PP layer 8b and an aluminum hydroxide paper 8a is embossed. FIG. 4A shows a state before processing,
(B) shows a state in which the sheet is pressed from the aluminum hydroxide paper 8a side, whereby the cross-sectional shape of the sheet material 2 having a two-layer structure becomes uneven, which is effective in preventing warpage. In other words, even if the sheet material 2 has a two-layer structure, even if warpage is likely to occur, warpage can be prevented by making the cross-sectional shape uneven, whereby the assembling process of the floor heating panel 1 can be prevented. Can be done easily. It should be noted that the present invention is not limited to embossing, and it may be perforated, or a tape may be attached to make it uneven.
Of course, the sheet material 8 is not limited to the laminated structure of the PP layer 8b and the aluminum hydroxide paper 8a.

[0016]

As described above, according to the first aspect of the present invention, the heater wire and the wiring portion are provided on the upper surface of the panel substrate, and the back surface of the panel substrate is covered with the sheet material. In the floor heating panel, the back surface portion corresponding to the wiring portion of the back surface of the panel base material is covered with a sheet material having self-extinguishing property, and the remaining back surface portion is covered with a sheet material having no self-extinguishing property, A self-extinguishing sheet material at the back surface corresponding to the wiring portion can eliminate the risk of ignition due to poor contact of the wiring portion, and a relatively inexpensive sheet with no self-extinguishing property at the remaining back portion. By sticking the material, the material cost can be reduced as compared with the case where an expensive digestive sheet material is stuck on the entire back surface of the panel substrate as in the related art. Furthermore, by attaching the two sheet materials to the back surface of the panel substrate with the same adhesive, the two sheet materials can be relatively inexpensive without using an expensive adhesive as in the past. Can be attached, and further cost reduction can be realized.

According to a second aspect of the present invention, in addition to the effect of the first aspect, the sheet material having self-digestibility is formed by laminating aluminum hydroxide paper and a polypropylene resin layer. The flame retardancy is improved by the aluminum hydroxide paper, and the strength of the aluminum hydroxide paper can be increased by laminating the polypropylene resin layer on the aluminum hydroxide paper having low strength. Further, the aluminum hydroxide paper can be bonded with, for example, a vinyl acetate adhesive for kraft paper, which is also effective in reducing the cost of the adhesive.

According to a third aspect of the present invention, in addition to the effect of the second aspect, the cross-sectional shape of the sheet material is formed to be uneven so as to prevent warpage. Even in the case of a two-layer structure with a layer, by forming the cross section into an uneven shape, it is possible to prevent the occurrence of warpage, thereby making it easier to assemble the floor heating panel.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the vicinity of a wiring portion of the same.

FIG. 3 is a cross-sectional view of the self-extinguishing sheet material according to the first embodiment.

4A is an explanatory diagram of a cross-sectional shape before embossing the sheet material, and FIG. 4B is an explanatory diagram of a cross-sectional shape after processing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor heating panel 2 Panel base material 2a, 2b Back surface part 3 Heater wire 4 Wiring part 8 Self-extinguishing sheet material 8a Aluminum hydroxide paper 8b Polypropylene resin layer 9 Non-self-extinguishing sheet material

Claims (3)

[Claims] 1. A floor heating panel in which a heater wire and a wiring portion are provided on an upper surface of a panel base material, and a back surface of the panel base material is covered with a sheet material. The back surface is covered with a self-extinguishing sheet material, the remaining back surface is covered with a non-self-extinguishing sheet material, and both sheet materials are adhered to the back surface of the panel substrate with the same adhesive. A floor heating panel characterized by being worn. 2. The floor heating panel according to claim 1, wherein the self-extinguishing sheet material is formed by laminating aluminum hydroxide paper and a polypropylene resin layer. 3. The floor heating panel according to claim 2, wherein the cross-sectional shape of the sheet material is formed in an uneven shape for preventing warpage.