JPS62897Y2 - - Google Patents

Description

[Detailed description of the invention] This invention integrates a synthetic resin foam as a heat insulating material and waterproof material and a wood fiberboard as a heat insulating material and moisture control material, and also uses wood fibers from the synthetic resin foam. The present invention relates to a composite plate in which a plurality of pipe-shaped reinforcing plates partially embedded in the plate are provided to add compression resistance at low cost and easily.

BACKGROUND OF THE INVENTION In order to save energy, insulation structures are becoming widespread in all parts of buildings and structures. For example, as shown in Figure 1, the floor is made of synthetic resin foam A, wood fiberboard B, and sheet material C.
A composite board D integrally formed with is laid on the joist E,
A structure fixed with zinc nails F is well known. However, in this structure, the ends of the composite plate D, especially the corners, are deformed as shown by solid lines Δh and Δh' in FIG. 2 due to loads and external forces, and the carpet laid on top There were drawbacks such as the PVC sheet G being destroyed by the head of the nail F. Of course, there was a disadvantage that gaps were formed in the joints H between the composite plates D, resulting in a decrease in heat insulation. Furthermore, when the corners deform, a step is created on the floor,
It not only spoiled its appearance, but also had the disadvantage of hindering walking.

In order to eliminate these drawbacks, the present invention uses a plurality of pipe-shaped reinforcing materials to strengthen the compression resistance of the synthetic resin foam, and the reinforcing materials are compressed to a certain extent or more to the wood fiberboard. This project proposes a composite board that will not be buried.

An embodiment of the composite plate according to the present invention will be described in detail below with reference to the drawings. That is, FIG. 3 is a perspective view showing an example of a composite plate according to the present invention,
Reference numeral 1 is a composite board in which a synthetic resin foam 2 (hereinafter simply referred to as foam) and a wood fiberboard 3 (hereinafter simply referred to as board) are laminated together, and a wire is inserted through the foam 2 and attached to a part of the board 3 at one end. A plurality of pipe-shaped reinforcing plates 4 (hereinafter simply referred to as reinforcing materials) each having a portion buried therein are disposed. To explain further, the foam 2 is formed by using a molded body or by discharging the foam raw material onto the board 3 using an in-situ foaming method, and then foaming it.
It is formed by any method of molding. This form 2 mainly acts as a heat insulating material, waterproof material, waterproof material, corrosion resistant material, and cushion material, and has a thickness _t1 of approximately 5 to 100 mm and a density of 20 to 100 kg/ ^m3.
It has either a closed cell structure or an open cell structure. Specific examples of the foam 2 include polyurethane foam, polyisocyanurate foam, phenol foam, polystyrene foam, polyethylene foam, vinyl chloride foam, etc., and the density thereof is about 0.02 to 0.1 g/cm ³ . This means that the compressive strength of Form 2 itself is approximately
This is because 0.5-8Kg/ ^cm3 is required. That is, if the density of the foam is smaller than the lower limit value, there is a risk that the entire load will be concentrated on the reinforcing material 4, and if the density is larger than the upper limit value, the foam will be inferior in terms of heat insulation, weight, and cost. The preferred density is approximately 0.03
～0.06g/cm ^3rd place, compressive strength is about 1.5-3Kg/cm ³
and in the form of a closed cell structure. Board 3 is a wood fiberboard that functions as a heat insulating material, waterproof material, bending strength reinforcement material, and humidity control material, and the thickness _t2 is approximately 9 mm, 12 mm, or 15 mm, and the density is approximately
Less than 400Kg/ ^m3 , size is length L = 1800mm, width W
= 900mm, specifically a sheathing insulation board. Furthermore, the reinforcing material 4 mainly serves to reinforce the compressibility of the foam 2 against the load, and also to prevent the foam 2 from breaking. That is, the reinforcing material 4 is a lightweight member that is not corroded by the foam 2, has the required strength, and is a low-cost member. Specifically, for example, as shown in FIGS. As shown in FIGS. 5a and 5b, reinforcing materials 4 having a pipe-shaped cross section are embedded in the composite board 1 in an appropriate arrangement. Note that FIG. 5b shows a composite plate 1 in which the top surface of the reinforcing material 4 is covered with the foam 2 having a thickness of Δd. Here, to specifically explain the reinforcing material 4, the most suitable material is plastic, which has excellent corrosion resistance, chemical resistance, and workability, is lightweight, strong, and is inexpensive. In addition, the shape is as shown in Figure 4a.
Typical examples are those shown in Figures 1 to 3.A shows a round pipe with one end surface 4a having a flat end surface and the other end surface having an uneven shape, such as a serrated shape 4b, for easy driving. Diameter d is approximately 10-30mmφ, thickness △
t=1 to 3 mm, and h is buried in the board 3 at a depth of ΔH (2 to 10 mm) as shown in FIG. In particular, the innermost portion 4c also functions as a stopper to prevent the reinforcing material 4 from being driven into the board 3 by external force. In addition, reinforcing material 4
The height H is determined by the thickness t ₁ +ΔH of the form 2. Furthermore, the shape of the sawtooth 4b in figure b is different from that in figure a, and consists of four teeth.
In addition, a through hole 4 is formed on the outer peripheral surface of the round pipe-shaped reinforcing member 4.
d is drilled. This through hole 4d is effective for introducing the raw material of the foam 2 into the round pipe when the foam 2 is formed by the in-situ foaming method. Further, FIG. c shows a reinforcing member 4 having a flange 4e provided on an end surface 4a.

Next, an example will be explained.

Now, in Fig. 3, foam 2 is a polyurethane foam formed by an in-situ foaming method with a density of 40.
Kg/m ³ , t ₁ = 13 mm, board 3 is a sheathing insulation board, t ₂ = 12 mm, reinforcing material 4 is made of polyethylene resin, specific gravity 0.95, △t = 1 mm, H
= 18 mm, h = 5 mm, and d = 10 mmφ. On the other hand, a comparative example is a composite plate without the reinforcing material 4. Therefore, the composite board 1 shown in FIG. 3 and the composite board D of the comparative example were laid side by side on the floor joist E as shown in FIG. 1, and fixed with nails F.
Next, a concentrated load of 60 kg was repeatedly applied to one point (area 10 cm ³ ) 100 times from the direction of arrow A to the corners of both composite plates. Afterwards, when we observed the deformation of the corners, we found that for composite plate D, △h shown in Figure 2 was approximately 0.5 mm, whereas for the composite plate of the comparative example, △h = 7 mm.
It was hot. From this result, it was found that the reinforcing material 4 protects the corners of the composite board 1. Furthermore, even if the reinforcing material 4 is cast into the board 3, the innermost part 4c of the uneven part
functions as a stopper, and the organization of the board,
Due to its elasticity, it did not bury itself even when external force was applied, and maintained its current status.

What has been described above is only one embodiment of the composite plate according to the present invention, and the composite plate may be formed as shown in FIGS. 6 and 7, or the reinforcing material may be formed as shown in FIG. 8. You can also do that. That is, FIG. 6 shows the sheet 5 pasted on the surface of the foam.
FIG. 7 shows a composite board in which the sheet 5 and the board 3 are integrated by interposing the form 2 between them, and then reinforcing material 4 is cast from the sheet 5 side. Further, FIGS. 8a and 8b show reinforcing materials whose cross sections are triangular or quadrangular.

As mentioned above, according to the composite board according to the present invention,
Specially shaped reinforcing materials are placed at the weakest points of the composite board, such as the corners and edges, so the foam, which lacks compressive strength, will not break or deform.
It maintains the positional relationship at the time of construction and eliminates defects that could impair the appearance or damage the rug.
Further, the reinforcing material has the advantage of being lightweight, inexpensive, and easy to construct. Furthermore, the reinforcing material has the advantage that it can be easily attached to commercially available composite plates. Another feature is that the composite plate does not deform, so there is no loss of heat insulation.

[Brief explanation of drawings]

Figures 1 and 2 are a perspective view and an explanatory view showing the mounting state of a conventionally used composite plate, and Figure 3
The figure is a perspective view showing an embodiment of the composite plate according to the present invention, Figures 4 a to c are explanatory diagrams showing an embodiment of the reinforcing material used in the composite plate according to the present invention, and Figures 5 a and b
is an explanatory diagram showing one embodiment of the longitudinal section of the composite plate according to the present invention, and FIGS. 6, 7, and 8 a and b are other embodiments of the composite plate and reinforcing material according to the present invention. FIG. A, 2...Synthetic resin foam, B, 3...Wood fiber board, 4...Pipe-shaped reinforcement material.

Claims (1)

[Scope of utility model registration request] In a composite board in which a wood fiberboard and a synthetic resin foam are integrated, a pipe-shaped reinforcing material formed in an uneven shape that is easy to cast on one end surface penetrates the synthetic resin foam, and the uneven end surface is A composite board characterized in that it is buried to a position that does not penetrate the wood fiberboard.