JPH0375699B2 - - 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, thereby reducing the absolute amount of combustible materials and reducing heat generated by air cycles at high temperatures. Siding board (hereinafter simply referred to as siding board), which reduces conduction and forms a heat insulating layer, can pass quasi-inflammability tests (surface test, box test) and fireproof structure test, is lightweight, has high heat insulation properties, is highly productive, and can reduce costs. board). This kind 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 connecting parts formed on the left and right side walls, and the back side of these parts 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-
Passed the surface test in A-1321), but passed the box test and fire protection test (JIS-A-1301 wooden base 2).
There was a flaw that made it impossible to pass the exam. The two problems were that it flashed over in the box test, and that the backside temperature was over 260°C in the fire protection test. In particular, the biggest weaknesses in the box tests were the ejection of flammable gas from the joints, and in the fire protection tests, the temperature rise on the back side of the joints. In order to eliminate these drawbacks, the present invention ensures that the surface materials at the joints of the board come into contact with each other, suppresses gas ejection from the joints, and reduces the absolute amount of plastic foam and the joints. The board is designed to prevent deformation due to air cycling, and the backing material is made of a fire-retardant material, and by forming a heat insulating layer by forming air passages on the board and air cycling, it passes the quasi-nonflammability test and fire prevention test. This paper proposes a board that can be used. 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, futsu-treated steel plate, enameled steel plate, and damping steel plate, 15 is plastic foam (hereinafter simply referred to as foam), 16
8b is a hollow part, and 17 is a notch part. To explain further, the surface material 1 has a main body formed with a concave cross-section, as shown in FIG. 5 and male and female connecting parts 6 and 9 formed at the lower ends of the side walls 3 and 4, and are mainly used for fire prevention materials, decorative materials, reinforcing materials, shapes, noncombustible materials, waterproof materials, and air cycle passages. It functions as a forming material and a heat insulating layer constituent material. That is, the decorative surface 2 has a surface structure such as a flat plate, an embossed pattern, or a chip pasted thereon. In addition, the male connecting portion 6 includes an insertion edge 7 extending the lower end of the side wall 3 outward, a reinforcing piece 8 whose tip is folded back inward, and a reinforcing piece 8 that extends to the inside of the side wall 3, and a reinforcing piece 8 whose tip is further extended inward. A hollow part 8b is formed from the partition piece 8a bent in an L-shape toward the side and brought into contact with the back surface of the side wall 3, the side wall 3, and the reinforcing piece 8, and when the boards A are connected as shown in FIG. It prevents flammable gas and decomposed gas from blowing out to the decorative surface 2 side from the joint part B, and also functions as a connecting structure, a fire prevention structure, effective air cycle, reinforcement against dimensional deformation, and a mold material when forming a form. It is something. In particular, the hollow portion 8b functions as reinforcement, foam reduction, formation of a heat insulating layer, and air cycle passage. Further, 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 bored outwardly from its lower edge 11, and its tip bent outwards. Tongue piece 13
and a protrusion 14 formed in the middle of the extension part 12 in parallel to the side wall 4. In particular, the dimensions of the insertion groove 10, the tongue piece 13, and the protrusion 14 are determined based on the connection between the boards A, the spacing between the joints B, fire prevention, and waterproofing. The dimensions of the surface material 1 are, for example, W ₁ the width of the decorative surface 2, W ₂ the width of the insertion edge 7, W ₃ the width of the reinforcing piece 8, and the width of the reinforcing piece 8 extending inward from the side wall 3. W ₄ is the width from the side wall 4 to the tongue piece 13.
W ₅ , the width of the insertion groove 10 is W ₆ , the width from the deepest part of the insertion groove 10 to the tongue piece 13 is W ₇ , the height of the side wall 3 is h ₁ ,
The height of the side wall 4 is h ₂ , the height of the insertion groove 10 is h ₃ , the height of the tongue piece 13 and the protrusion 14 is h ₄ , h ₅ , the height of the partition piece 8a is h ₆ , the surface material 1 When the thickness of the plate is t, W ₁
= 180~450mm, W ₂ ≧ W ₆ , W ₃ ≒ W ₂ + W ₄ , W ₅ =
W ₃ - W ₆ , or W ₅ ≒ W ₆ , W ₇ ≒ W ₂ + W ₄ , h ₁ =
h ₂ , h ₂ + h ₃ = h ₁ + h ₃ , h ₄ , h ₅ = 1 to 3 mm, h ₆ < h ₁
It is. The foam 15 has fire retardant properties, heat insulating properties, and adhesive properties, such as polyisocyanurate foam, phenol foam, silicone foam, modified polyurethane foam, and these include long and short glass fibers, silicone, perlite, mica, asbestos, and carbon. It contains one or more of fibers, borax, etc., and is integrally constructed from a core member 15a filled in the space of the main body 5 , a reinforcing piece, and a bulging part 15b bulging downward from the extension part 12. It is something. Note that the bulging portion 15b is divided into sections for convenience, and is actually made of one piece. Further, the thickness of the form 15 is H ₁ at the highest part,
The thickness from the front surface to the back surface of the reinforcing piece 8 is H ₂ , the thickness from the back surface to the lower edge of the decorative surface 2 is H ₃ , and the extension part 1
Thickness from back side to back side of 2 is H ₄ , partition piece 8
The thickness from a to the back of decorative surface 2 is H ₅ , side wall 3
Assuming that the width from to the side wall of the notch 17 is W ₆ , H ₁ = H ₃ + H ₄ , H ₂ = H ₁ − h ₁ , H ₂ > H ₄ , H ₁
-( _H2 + _h6 )= _H5 , _W6 = _W3 - _W2 . The back material 16 covers the exposed surface of the form 15, 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,
It consists of one or more of glass fiber sheets, vinyl chloride sheets, metal foils (Al, Fe, Cu), and a sheet-like material that has been treated with 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 = 20mm, W ₃ = 34mm, W ₄ ≒ 14mm, W ₅ = 20mm,
W ₆ = 13mm, W ₄ = 33mm, W = 9mm, h ₁ = 8mm, h ₂
=7mm, _h3 =3.5mm, _h4 =2mm, _h5 =2mm, _h6 =
5mm, Form 15 has H ₁ = 25mm, H ₂ = 15mm, H ₃
= 10 mm, H ₄ ≒ 12 mm, polyisocyanurate foam (density 50 Kg/cm ³ ) was discharged and molded in the raw state onto the surface material 1 , manufactured by Nippon Polyurethane Co., Ltd. The back material 16 was 20 micron aluminum on asbestos paper. It is laminated with foil. Further, the width Δt of the joint B between the boards A is 7 mm. Further, as a comparative example, a board was used in which the same dimensions as in FIG. 2 were used for the surface material 1 except that the reinforcing piece 8 was omitted. Therefore, we conducted surface tests, box tests, and fire protection tests on both boards, and the following results were obtained.

【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. 4 a to 5 f and 5 a to c. In addition, in FIG. 4, 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,
Boards using the foam have the characteristics of being able to pass quasi-inflammability tests, box tests, and fire protection tests.
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.

[Brief explanation of drawings]

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 5F are cross-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, 8b... Hollow part, 15... Plastic foam, 16... Back material.

Claims (1)

[Claims] 1. A main body formed with a concave cross section from an elongated decorative surface and a side wall with both side edges parallel to the longitudinal direction of the decorative surface bent inward, and male and female molds formed at the lower ends of both sides of the side wall. A surface material consisting of a connecting portion, a plastic foam integrally filled by bulging downward from the main body of the surface material and the male and female connecting portions, and a back surface consisting of a sheet-like material, the exposed surface of the foam being integrally filled. In the siding board covered with plastic foam, the male connecting portion includes an insertion edge that protrudes outward from the lower end of one of the side walls, and a tip of the insertion edge that is folded inward to connect to the upper end of one side wall of the plastic foam. It has a reinforcing piece that is bent inward in an L-shape and provided with a hollow part from the back surface of the side wall, and the female connecting part is bent inward in a U-shape at the lower end of the other side wall of the main body. an engaging groove into which the male connecting part is inserted, an extension part whose lower end projects outward horizontally, a protrusion drilled in the middle parallel to the side wall, and a tip of the extension part outward. consisting of a tongue piece bent to, and
A siding board characterized in that the backing material is formed of a sheet-like material having fire retardant properties.