JPH0475332B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention integrates a fire-retardant plastic foam between a surface material made of a thin metal plate and a back material made of a fire-retardant sheet material, and is suitable for semi-flammability tests (surface tests, box tests) and fire-retardant structure tests. This relates to a siding board (hereinafter simply referred to as a board) that can pass the exam, is lightweight, has high heat insulation properties, and is highly productive. This type of board, which has been conventionally used, has a surface material made of a thin metal plate formed into a concave shape, with male and female joints formed on the left and right side walls, and the surface is filled with polyurethane foam, polyisocyanurate foam, phenol foam, etc. The structure is such that the exposed surface is covered with a backing material made of a sheet-like material. However, this type of board is subject to semi-flammability test (JIS-
Although it passed the surface test in A-1321), it had a drawback that it could not pass the box test and fire protection test (JIS-A-1301 wooden base grade 2). it is,
Flashover occurred in the box test, and the backside temperature exceeded 260°C in the fire protection test. In particular, in the box test, the biggest weakness was the sudden spout of flammable gas from the joint, and in the fire protection test, the temperature rise on the back side of the joint was the biggest weakness. In order to eliminate such drawbacks, the present invention forms the surface material of the board into a substantial box, and
It aims to suppress flashover by gradually ejecting combustible gas, and also ensures that the surface materials come into contact with each other at the joints, suppresses gas ejection from the joints, and makes the plastic foam and backing material fireproof. The present invention proposes a board that is made of a material that has properties that allow it to pass quasi-incombustibility tests and fire protection tests, and that also prevents flaking and improves aesthetics. An embodiment of the board according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing an example of the above-mentioned board, and 1 is a surface material such as a thin metal plate, such as a surface-treated steel plate, a stainless steel plate, a galvanized steel plate, an aluminum plate, or a galvanized steel plate.
Consisting of one type of copper plate, PVC steel plate, fluorine-treated steel plate, enamel steel plate, and damping steel plate, 15 is plastic foam (hereinafter simply referred to as foam), 16
1 is a backing material, and 17 is an engagement notch. To explain further, the surface material 1 has a main body formed with a concave cross-section, as shown in FIG. 5 and a male formed at the lower end of the side walls 3 and 4,
It is composed of female connecting parts 6 and 9 and a decorative piece 14, and mainly functions as a fireproofing material, a decorative material, a reinforcing material, a shape material, a noncombustible material, and a fireproofing material.
That is, the decorative surface 2 has a surface structure in which a flat plate, an embossed pattern, or a chip is attached, and the decorative pieces 14 have both end surfaces in the longitudinal direction of the decorative surface 2 bent inward and have an appropriate height, and the decomposed gas of the foam 15 is To suppress leakage from the joint part B and prevent the decorative surface 2 from becoming flattened. In particular, the makeup piece 14 is form 1.
5 is formed with a notch 14a for gradually releasing decomposed gas when exposed to high heat. Makeup piece 1 in the area surrounded by
It is a square or rectangle cut out of part of 4. In addition, the male connecting portion 6 includes an insertion edge 7 that extends the lower end of the side wall 3 outward, its tip is folded inward, extends as it is to the inside of the side wall 3, and its tip is bent outward for reinforcement. It is formed from a reinforcing piece 8 provided with a tongue piece 8a, and prevents flammable gas and decomposed gas from blowing out to the decorative surface 2 side from the joint part B when the boards A are connected as shown in FIG. At the same time, it also functions as a connecting structure, reinforcement for a fireproof structure, and a mold material during foam formation. Furthermore, the female connecting part 9 has an insertion groove 10 bent inwardly into a U-shape at the lower end of the side wall 4, an extension part 12 whose lower edge 11 protrudes outward again, and its tip bent outward. It is constructed from a protruding piece 13 that is
In particular, the dimensions of the insertion groove 10 and the tongue piece 13 are determined based on the connection between the boards A, the spacing between the joints B, fire prevention, and waterproofing. In addition, the dimensions of the surface material 1 are:
For example, the width of the decorative surface 2 is W ₁ , the width of the insertion edge 7 is W ₂ ,
The width of the reinforcing piece 8 is _W3 , the width of the reinforcing piece 8 extending inward from the side wall 3 is _W4 , the width from the side wall 4 to the tongue piece 13 is W5, the width of the insertion groove 10 is _W6 , and the width of the reinforcing piece ₈ is W4. The width from the deepest part of the groove 10 to the tongue piece 13 is _W7 , and the notch part 14a
The width of the decorative piece 14 is W ₈ , the width of the lower end of the decorative piece 14 is W ₉ , the side wall 3
h ₁ is the height of the side wall 4, h ₂ is the height of the insertion groove 10, h ₃ is the height of the insertion groove 10, h ₄ is the height of the protruding piece 13 and the reinforcing tongue piece 8a,
h ₅ , the total height of the protruding piece 13 is h ₆ , the total height of the decorative piece 14 is h ₇ , the height of the side walls 3 and 4 of the decorative piece 14 is h ₈ ,
h ₉ , and when the thickness of the surface material 1 is t, W ₁ = 180~
450mm, W ₂ ≧ W ₆ , W ₃ ≒ W ₂ + W ₄ , W ₅ = W ₃ −
W ₂ , or W ₅ ≒W ₄ , W ₇ ≒W ₂ +W ₄ , W ₈ ≒W ₆ ,
W ₉ = W ₁ − (W ₄ − width of protruding piece 13), h ₁ = h ₂ , h ₂ + h ₃
= h ₁ + h ₃ , h ₄ , h ₅ = 1 to 3 mm, h ₆ ≒ h ₄ + 2 to 5
mm, h ₇ = 10 to 24 mm, h ₈ ≒ h ₁ or h ₇ − _{h 9} .
The foam 15 has fire retardant properties, heat insulating properties, and adhesive properties, such as polyisocyanurate foam, phenol foam, silicone-containing modified polyurethane foam, and long and short glass fibers, silicon, perlite, mica, asbestos, and carbon. A core material portion 15a containing one or more of fibers, borax, etc., and filled in the space of the main body portion 5 .
The reinforcing piece and the bulging part 15b which bulges downward from the extension part 12 are integrally constructed.
Note that the bulging portion 15b is divided into sections for convenience, and is actually made of one piece. The thickness of the form 15 is H ₁ at the thickest part, H 2 from the surface of the reinforcing piece 8 to the surface of the back material, H ₃ from the back surface of the decorative surface 2 to the lower edge, and H ₃ at the extension part. The thickness from the back surface of 12 to the surface of back material 16 is H ₄ , side wall 3
The width from W to the side wall of the engagement notch 17 is W ₁₀
Then, H ₁ ≒ H ₂ − H ₃ , H ₂ = h ₂ + h ₃ , H ₂ > H ₄ ,
_W10 = _W3 - _W2 . Back material 16 is form 1
The exposed surface of No. 5 is coated with a film, and it mainly functions as a mold release material, a mold material, a fireproofing material, a waterproofing material, a heat shielding material, and an impermeable material for preventing gas leakage. Specific examples include asbestos paper, glass fiber sheets,
It consists of a sheet-like material that includes one or more of vinyl chloride sheets, metal foils (Al, Fe, Cu), and a net-like material, waterproofing treatment, and fireproofing treatment. Next, an example will be explained. Surface material 1 is a 0.27mm color steel plate, W ₁ = 360mm,
W ₂ = 23mm, W ₃ = 34mm, W ₄ ≒ 14mm, W ₅ = 20mm,
W ₆ = 13mm, W ₇ = 33mm, W ₈ = 13mm, W ₉ = 369mm,
W ₁₀ = 10mm, h ₁ = 8mm, h ₂ = 7mm, h ₉ = 2~5
mm, h ₄ = 2 mm, h ₅ = 5 mm, height of decorative piece 14 h ₆ =
15 mm, h ₈ = 7 mm, h ₉ = 15 mm, foam 15 is polyisocyanurate foam (density 50 Kg/cm ³ ) that was discharged and molded as a raw material onto surface material 1, manufactured by Nippon Polyurethane Co., Ltd., and back material 16 is asbestos. It is made of paper laminated with 20 micron aluminum foil. Further, the width Δt of the joint B between the boards A is 7 mm. In addition, as a comparative example, in the surface material 1 , except for removing the reinforcing piece 8,
It consists of a board with the same dimensions as in Figure 2. Therefore, we conducted surface tests, box tests, and fire protection tests on both boards, and the following results were obtained.

【table】

【table】

[Table] What has been described above is only one embodiment of the board according to the present invention, and the board can be formed as shown in FIGS. 4a to 4d and 5a to 5c. In addition, in FIG. 4, the surface material 1 is shown as a single line, 18 is a caulking material, and in FIG. 5, 19 is a sheet-like material. As described above, according to the board according to the present invention,
Since the decorative piece is formed by bending both edges in the longitudinal direction into an L-shape, the board using the foam has the characteristic of being able to pass the quasi-inflammability test, the box test, and the fire protection test. Since the cutout portion is formed in the decorative piece, combustible gas can be gradually ejected, and flashover can be suppressed. In addition, manufacturing is almost the same as before, the form is either a single item or something close to it, and it has the characteristics of being able to be produced in large quantities. Furthermore, the heat insulation properties, strength, and corrosion resistance are greatly improved compared to before, and there is no cost increase. In addition, since it has the above-mentioned cosmetic piece, it does not show any scratches on the cosmetic surface, is beautiful, has sufficient strength, and can be used without being affected by the form condition.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the siding board according to the present invention, Fig. 2 is a perspective view showing the surface material which is the main part, Fig. 3 is an explanatory view showing the connected state of the board, Fig. 4 5A to 5D are sectional views showing other examples of the surface material, and FIGS. 5A to 5C are explanatory views showing other examples of the siding board. 1 ... Surface material, 2... Decorative surface, 3, 4... Side wall, 5 ... Main body part, 6 ... Male connection part, 7... Insert edge, 8... Reinforcement piece, 8a... Reinforcement tongue Piece, 9 ... Female connection part, 10... Insertion groove, 12... Extension part, 1
3... Protruding piece, 14... Cosmetic piece, 14a... Notch, 15... Plastic foam, 16...
Back material.

Claims (1)

[Claims] 1 A main body portion 5 formed with a concave cross section from an elongated decorative surface 2 and side walls 3 and 4 whose both side edges parallel to the longitudinal direction of the decorative surface 2 are bent inward, and both sides of the side walls 3 and 4. A surface material 1 consisting of male and female type connecting portions 6 and 9 formed at the lower end of the wall, a main body portion 5 of the surface material 1 , and a rear surface of the male and female type connecting portions 6 and 9 from the male and female type connecting portions 6 and 9 . In a siding board that includes a plastic foam 15 that is integrally filled with a plastic foam 15 that bulges out in the direction of A reinforcing tongue piece 8a is provided with an outwardly protruding insertion edge 7, the tip of the insertion edge 7 folded back inward and extending to the upper end of one side wall of the plastic foam 15, and the tip bent outward. The female connecting portion 9 is formed by bending the lower end of the other side wall 4 of the main body 5 inward in a U-shape, and forming an insertion groove 10 into which the male connecting portion 6 is inserted. An extension part 12 whose lower end protrudes outward parallel to the decorative surface 2, a protruding piece 13 whose tip protrudes upward, and both longitudinal edges of the decorative surface 2 are bent inward at right angles to form the form 15. A decorative piece 14 is provided to cover the end face of the mouth, and a notch 14a is formed with the width of the side wall 4 on the female connecting part 9 side of the decorative piece 14 and the insertion groove 10, and the back material 16 is fireproof. A siding board characterized in that it is formed from a sheet-like material that has properties.