JPS6011232Y2 - siding board - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a metal siding board, particularly a siding board with fire and heat resistance.

The siding board according to this invention (
An embodiment (hereinafter simply referred to as a board) will be described in detail.

The main body 1 has a square or rectangular decorative surface 1a, and is made of a moldable plate such as a thin metal plate.

Reference numerals 2 and 3 denote side walls, which are formed by bending both ends of the main body 1 vertically or at an angle (not shown), and the edges of the side walls 2 protrude outward to form a male connecting portion 4.

The male connecting portion 4 consists of an insertion edge 5 and a tongue piece 6 whose tip is bent as shown in the figure or to the opposite side (not shown).

Reference numeral 7 denotes a female connecting portion, which bends the edge of the side wall 3 inward in a U-shape to form an insertion groove 8, and extends its lower edge 9 further outward to form an extension portion 10 and its lower edge 9. It consists of a protrusion 11 provided parallel to the side wall 3 midway, and a tongue piece 12 with the tip of the extension part 10 bent outward.

Note that the protrusion 11 is provided as necessary, and can also be made to protrude in the opposite direction to that shown in the figure.

In particular, the protrusion 11 has the function of airtightness and draining when the male and female molds are connected.

Reference numeral 13 is a synthetic resin foam that becomes carbide under high temperatures, and is used to fill the gutter-shaped part formed by the main body 1 and the side walls 2 and 3, and is mainly used as a heat insulating material, an adhesive, a lightweight raising material, and a cushion. acts as a material, sound absorbing material and non-moisture absorbing layer.

The most suitable materials are polyisocyanurate foam, phenol foam, polyimide foam, etc.

14 covers the back side of the synthetic resin foam 13 with a composite sheet.

That is, as shown in FIG. 2, the composite sheet 14 has a structure in which an air-impermeable and non-combustible sheet-like material 15 is placed facing each other, and an adhesive 16 is partially applied at an appropriate position.

This is because when exposed to high heat, the decomposition gas of the adhesive and the air present in the unapplied parts of the adhesive 16 (so-called micro-gaps) expand, changing the cross section of Figure 3a to that shown in Figure 3b. This is to strengthen the heat insulating layer 17a and maintain the back surface temperature at a relatively low temperature.

Of course, under normal conditions, this helps make thermal radiation work effectively.

The sheet-like material 15 is a metal foil, or a material laminated with one or more of metal foil and asbestos paper, glass cloth, and the like.

Examples of the metal foil include aluminum foil, tin foil, and lead foil.

The thickness varies depending on the pressure, but it is approximately 50 to 200 mm.
It is on the order of microns.

Further, the adhesive 16 is applied to the opposite surface of the sheet 15 with base grain, twill grain,
Distributed in other arrays.

The coating thickness is about 10-100 microns.

Note that a micro gap 17 is definitely formed between the adhesives 16.

The adhesive 16 may be either organic or inorganic, such as polyurethane resin, phenol resin, acrylic resin, epoxy resin, rubber, starch, vinyl chloride resin, furan resin, water glass, etc.

Next, this board was constructed on top of 9m of gypsum board to meet the JIS-
The fire protection performance was tested according to the outdoor fire protection class 2 of A-1302.

That is, the total plate thickness H8 = 16 m, tongue piece 1 from the deepest part of the insertion groove
2 until the tip = 32m17! , I-q=21WI4 from the side wall 2 to the tip of the tongue piece 6, the main body 1 is a color steel plate of 0.27mm, the foam 13 is a polyisocyanurate foam (density 30kp/rrr), and the composite sheet 15 is a 0.27mm color steel plate.
A sheet of 15 mm aluminum foil and 0.1 mm asbestos paper was laminated together using adhesive 16 (phenol resin) as shown in Figure 2, and the total bonding area was 173 mm. .

Note that the height of the void 17 was 0.1 mm to 0.2 m.

Therefore, as shown in Figure 4, this board is made of gypsum board 1
8. It was installed on the furring 19 using nails 20, and the above tests were conducted.

As a result, the maximum temperature on the back surface was 150℃ (after heating 2 powders),
The maximum deflection was 4, and there was no ignition on the back side, no afterflame, residual dust, ignition, or harmful smoke.

Further, no deformation, destruction, or falling off was observed.

When the board was observed after the test, the composite sheet 14 was found to have expanded as shown in the cross section shown in FIG.

In other words, both ends are compressed by other members, nails, etc. during construction, so they cannot expand much, and the center part is about 5 WI.
It expanded to form a void at position t.

This greatly contributes to insulation.

What has been explained above is only one example of the board according to the present invention.
It can also be formed as shown in FIG.

That is, the board may be formed by forming the foam 13 into two layers 13a and 13b, interposing the composite sheet 14 between them, and further covering the back surface of the foam 13b with a waterproof sheet 21.

This is a board with improved fire prevention and insulation properties at the joints.

In particular, since the composite sheet 14 is interposed in the intermediate layer, Form 1
3a and 13b can be easily separated at high temperatures, and skin layers are formed on both sides, resulting in a crack-free board.

As described above, the board according to the present invention has a great feature of excellent fire resistance.

In addition, even if the foam is thin, it has high heat insulation properties due to the function of the composite sheet.

Furthermore, since thermal radiation can be fully utilized and a skin layer can also be used, there are fewer cracks in the foam at high temperatures, and the back surface temperature can be prevented from increasing.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the siding board according to the present invention, Fig. 2 is a perspective view showing the main part of the composite sheet, and Figs. 3 a and b show the composite sheet after being exposed to high temperatures. An explanatory diagram showing a part of the sheet enlarged, Fig. 4 is an explanatory diagram showing the construction, Fig. 5 is a sectional view showing the siding board after the fire protection performance test, and Fig. 6 is a perspective view showing other examples. It is. 1...Main body, 13...Synthetic resin foam, 14...Composite sheet.

Claims (1)

[Scope of utility model registration request] A male connecting portion consisting of an outwardly protruding insertion edge is provided on one side edge of the main body having a square or rectangular decorative surface, and an insertion groove and the insertion groove are provided on the other side edge parallel to the side edge. A siding board with a female connecting part having a protruding extension extending outward from the lower edge of the siding board, wherein a synthetic resin foam that becomes carbide at high temperature is placed in a gutter-like part surrounded by the main body and the two side edges. The synthetic resin foam is laminated on the back side of the synthetic resin foam with an adhesive partially disposed with an impermeable noncombustible sheet, and is covered with a composite sheet with minute voids formed therein. siding board.