JPH044443Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to a siding board (hereinafter simply referred to as a board) useful as an exterior material for buildings and structures. In particular, it can pass the semi-flammability test, box test, and fire protection structure test,
This relates to boards with excellent insulation, waterproofness, airtightness, and productivity. A considerable number of boards of this type are on the market, in which a heat insulating material, particularly polyurethane foam or polyisocyanurate foam, is filled between the front and back materials. However, due to new fire safety regulations, a board using only the above foam will not be able to pass any of the tests.
Therefore, for example, instead of polyisocyanurate foam, boards made only of phenol foam, boards made of gypsum board and polyisocyanurate foam, or composite boards of polyisocyanurate foam and rock wool board have also been proposed. However, a board using a core material consisting only of resol type phenol foam has been difficult to use alone because the phenol foam lacks adhesive properties and is brittle. Also, gypsum board,
Boards that are simply a composite of rock wool, polyisocyanurate foam, etc. are heavy, expensive, and have the disadvantage of lacking productivity. Furthermore, a board made of a composite of polyisocyanurate foam A and a noncombustible material B such as the above-mentioned gypsum board or rock wool board is produced by discharging the above-mentioned foam A as a raw material onto the back side of a surface material C, as shown in FIG. A noncombustible material B is placed on top of the polyisocyanurate foam A at a position deviating from the polyisocyanurate foam A by a width of Δl, and due to the laminated structure, the noncombustible material B is kept in an unstable state until the foam A foams considerably. will be placed,
This had disadvantages such as inhibiting the reaction and foaming of the foam A, resulting in poor productivity, lowering the yield, and leaking a portion of the foam A to the outside. In order to eliminate these drawbacks, the present invention has a shape in which the opening of the recess in the surface material is closed with a phenol foam plate, which makes it easy to place, has high productivity, and prevents the foam raw material from going outside during foaming. The self-adhesive properties of the foam, which does not leak and has fire retardant properties, reduce the need for adhesives and improve strength.In addition, the back and sides of the phenol foam board are made fire retardant. The brittleness, water absorption, and peculiar color appearance of the phenol foam board are suppressed by coating it with a backing material that has a This paper proposes a waterproof board. An embodiment of the board according to the present invention will be described in detail below with reference to the drawings. FIG. 2 is a perspective view showing a typical example of the board. In the figure, 1 is a surface material, 9 is a male connection part, 13 is a female connection part, and 16 is a fire-retardant foam (hereinafter referred to as
17 is a phenol foam board (hereinafter simply referred to as a foam board); 19 is a fire-retardant back material (hereinafter simply referred to as a back material)
It is. To explain further, the surface material 1 is formed by forming a thin metal plate as shown in FIG. The lower end edge of the side wall 3 is bent inward and outward again to provide a receiving piece 6, and the tip of the receiving piece 6 is protruded outward to provide an insertion edge 7. , a male connecting portion 9 with a tongue piece 8 provided at the tip of the insertion edge 7 as necessary;
The lower edge of the side wall 4 is bent outward and then inward again to project a joint bottom surface piece (hereinafter simply referred to as a projecting piece).
10, a U-shaped engagement groove 11 formed by bending the tip of the protruding piece 10, and a female connecting part 13 provided with an extension part 12 whose lower edge 11a protrudes outward. It is. In addition, the female type connecting part 13
If necessary, a protrusion 14 and a tongue piece 15 may be provided. To explain further, the opening of the recessed portion 5 has an opening width of W ₁ between the receiving piece 6 and the engagement groove 11, and the surface 6a of the form plate 17 and the lower edge 11a of the receiving piece 6,
The dimensions are such that it can be placed on the back surface of the extension part 12. This is to prevent the foam plate 17 from falling into the space of the concave portion 5 and to support it in a stable state when the foam 16 is discharged in the raw material state. Further, since the recessed portion 5 has a rectangular cross section, the raw material of the foam 16 does not leak outside from other than the opening portion during reaction and foaming, and functions as a mold material. Furthermore, the receiving piece 6 reinforces the insertion edge 7 and also strengthens the side wall 3 of the form 16.
This is to prevent the raw material of the foam 16 from leaking from the lower end of the foam plate 17, and to place one end of the foam plate 17 thereon. In addition, as shown in FIG. 4, the protruding piece 10 comes into contact with the side wall 3 of the adjacent board when engaged, forming a joint that creates a three-dimensional effect while strengthening the airtightness and waterproofness of the joint. It also serves to prevent hot air from entering the interior in the event of a fire, as well as to prevent gas and smoke generated from the foam 16 from leaking to the outside. The foam 16 mainly functions as a fireproof material, a heat insulating material, a lining material, a cushion material, a waterproof material, a moisture proof material, and an adhesive, and is discharged as a raw material into the concave portion 5.
By reacting and foaming, the surface material 1 and the foam plate 17 are fixed together with the self-adhesive property during foaming. Specific examples include polyisocyanurate foam, nurate-modified polyurethane foam,
Polyphenylene foam, or long or short glass fibers, carbon fibers, or powdered (including fine powder) aluminum, alumina hydroxide, aluminum phosphate, bentonite, glass, carbon black, limestone, water. Lithium oxide, activated alumina, calcium bicarbonate, calcium carbonate, diatomaceous earth, vermiculite, quartz (flint), asbestos, kaolin clay, mica, talc,
wollastonite, silicic acid (white carbon),
Aluminum silicate, calcium silicate, hydrated calcium silicate, calcium sulfoaluminate, gypsum, silica, silica gel, magnesium hydroxide, graphite powder, slate powder, sericite, barite, waxite clay, attapulgite, potassium feldspar, soda feldspar, barium feldspar , phenol foam powder, alumite, antimony trioxide, xonotrite, tobermorite, or perlite grains, shirasu balloons, alumina bulbs, glass grains, well-known flame retardants, etc., per 100 parts by weight of the raw material of Form 16, It also includes foams added in an amount of 5 to 200 parts by weight. Note that this type of additive may be surface-treated with a surfactant. In particular, it is preferable that this foam 16 forms a carbonized layer under high heat. The foam plate 17 is a molded body of phenol foam that is highly dimensionally stable even under high heat, and may be any of resol type, novolac type, and benzilik type phenol foam, and may be made alone or made of the above-mentioned inorganic fibers, inorganic powder, It is made of one or more types of lightweight aggregates, and has a density of 20 to 100 kg/ ^m3 , a thickness of 5 to 50 mm, a width of 180 to 900 mm, and a length of 1800 to 100 mm.
It is a molded body approximately 7272 mm in length, and is placed at a distance of _l1 from the side wall 3 and within a range of W2 on the receiving piece ₆ , and forms a recessed portion 9a for connection.
Note that the recess 9a is formed when the boards are connected (Fig. 4).
It is formed so that the back surface is flush with no gap and the form board 17 covers the entire base, and it is provided so that the form board 17 is also present at the lower part of the joint part α. be. To explain further, the foam plate 17 is laminated during the reaction and foaming of the foam 16, and is adhered by the self-adhesive property of the foam 16 at least at the width _W1 of the opening of the recessed portion 5. The adhesive 18 is for bonding a back material 19, which will be described later, to the foam board. Examples include rubber-based materials, starch-based materials, synthetic resin-based materials, and inorganic materials with fire retardant properties. In addition, FIG. 2 shows a board in which an adhesive 18 is interposed on the entire exposed surface of the foam board 17, the lower edge 11a, the back surface of the extension part 12, and the surface 6a of the receiving piece 6. The backing material 19 covers the exposed surface of the foam board 17 via the adhesive 18, and is mainly used to improve fireproofing, waterproofing, weather resistance, aesthetics, and strength. The materials include, for example, kraft paper, asbestos paper, waterproofed kraft paper, waterproofed asbestos paper, metal foil (Al, Pb, Cu), glass fiber nonwoven fabric, synthetic resin sheet, and laminates of one or more of these. It consists of a sheet-like material that has been vapor-deposited. Next, the fire retardancy of Examples and Comparative Examples will be explained. First, the embodiment is a board having the shape shown in FIG. 2 and having the following configuration. That is, a 0.27 mm thick color steel plate, form 16, is used as surface material 1 .
The foam plate 17 is made of polyisocyanurate foam (density after filling is 30 Kg/m ³ ), the foam board 17 is resol type phenol foam with a density of 50 Kg/m ³ and a thickness of 15 mm, and the adhesive 18 is vinyl acetate adhesive, the back side The material 19 is aluminum foil (thickness 7
micron) laminated onto asbestos paper (70g/m2 ⁾ . In addition, the receiving piece 6 and the form board 1
The mounting width W ₂ with respect to 7 was 10 mm. In addition, the comparative example has the shape shown in Figure 1, and the materials are the same as in the example.
A is polyisocyanurate foam, noncombustible material B is a phenol foam board, surface material C is a 0.27 mm thick color steel plate, and the back material is the same as in the example.
The backing material and the noncombustible material B were bonded together using a vinyl acetate adhesive.

【table】

[Table] What has been described above is only one embodiment of the board according to the present invention, and the board can also be formed as shown in FIGS. 4a-p and 6a-q. That is, FIGS. 5a to 5p show modified examples of the surface material 1 , which can be formed for any purpose. Also, Figure 6 a-q
1 shows other examples of various structures such as the male type connecting part 9 and the female type connecting part 13 , and a to
Figure e shows a board with caulking agent 20 planted in each position, and figure f shows the backing material 19 covering the end of the extension 12 up to the upper surface, and caulking agent 20 applied to the tip.
Figure g shows a board in which the form board 17 protrudes by _l2 from the edge of the female connecting part 13 , and the exposed surface of the form board 17 is covered with a backing material 19.
Figure h shows a board that protrudes outward by ΔW from the female connecting portion 13 after the back side material 19 is coated on the back side of the form board 17. Figure i shows a board that protrudes outward by ΔW after the back side material 19 is coated on the back side of the form board 17. ΔW to the outside of the mold connection part 13
The board that protrudes inward, bends inward again, and then covers the side surface of the foam board 17.
A board with one end of the plate 9 held between the tongue pieces 8. In figure K, the back material 19 extends between the form plate 17 and the surface 6a of the receiving piece 6, and between the form plate 17 and the back surface of the extension part 12.
The board coated with
Figure m shows a board with a hot-melt film adhesive 22 interposed between the lower edge 11a, the back surface of the extension part 12, and the form board 17, and Figure n shows a decorative groove 2a provided on the decorative surface 2, and a decorative groove 2a. A board that also supported the form board 17 on the back side of the board, (o) shows a board with fire protection paint 23 applied to the front or back side (not shown) of the insertion edge 7, and (p) shows a board that supports the foam board 17 on the front or back side (not shown) of the extension part 12. Figure q shows a board coated with fire protection paint 23 (not shown), with a protruding strip 10a provided at the tip of the protruding piece 10, and l ₃ from the tip of the insertion edge 7 to the side wall 3;
From the innermost part of the engagement groove 11 to the tip of the protruding piece 10 is l ₄
In this board, the relationship l ₃ >l ₄ holds, and the protruding piece 10 is smaller than the joint width. Note that the adhesive 18 is omitted in FIGS. 6a to 6q. Of course, it is also possible to create a board that combines each of FIGS. 5 and 6. As mentioned above, according to the board according to the present invention,
The back side of the board is covered with a phenol foam board that is highly fire-resistant and heat-insulating, has low smoke emission, and has a sufficient carbonization layer, and has excellent dimensional stability even under high heat. Since it is filled into a closed space, it prevents flammable gas and smoke from leaking outside, and is suitable for fire prevention tests.
It has the characteristics of being able to pass semi-flammability tests and BOX tests. In addition, by sandwiching the brittle phenol foam board with the backing material and plastic foam,
Because it is bonded, it can be sufficiently protected and its original properties can be used effectively. Furthermore, since the phenol foam plate is supported by the lower edge of the receiving piece and the engagement groove, and the surface material and the phenol foam plate form a mold that is closed in the longitudinal direction, there is no leakage of the fireproof foam to the outside. Even if there is insufficient foaming or insufficient discharge volume, the product will not immediately become defective, and will be highly efficient.
It has the characteristic of being able to be produced with high yield. Furthermore, since the protruding piece on the bottom surface of the joint comes into contact with the side wall of the adjacent board, there is a feature that waterproofness and airtightness are improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a conventional siding board, Fig. 2 is a perspective view showing an embodiment of the siding board according to the present invention, and Fig. 3 is a surface that is a constituent material of the siding board according to the present invention. FIG. 4 is a perspective view showing one embodiment of the material, FIG. 4 is an explanatory diagram illustrating the construction state, and FIGS. 1 ... surface material, 6 ... receiving piece, 10 ... joint bottom protruding piece, 16 ... fire-retardant foam,
17... Phenol foam board, 19... Back material having fire retardant properties.

Claims (1)

[Scope of utility model registration request] A rectangular decorative surface and both ends of the decorative surface are bent inward to form two side walls with a concave cross section, one edge of the side wall is bent inward and then bent outward again. A male connecting part consisting of a receiving piece formed and an insertion edge formed by projecting the tip of the receiving piece outward, and an edge of the other side wall bent outward and then bent inward again. a protruding piece on the bottom surface of the joint, an engagement groove formed by bending the lower end of the protrusion on the bottom of the joint outward to form a U-shaped cross section, and a lower edge of the engagement groove protruding outward. A surface material having a female connecting part consisting of an extension part, a fire-retardant foam that is discharged as a raw material into the recessed part of the surface material and filled by reaction and foaming, and a male type connecting part on the back side of the foam. from the side wall of the
l A phenol foam board that is tilted by ₁ and laminated on the receiving piece, the engagement groove, the lower edge, and the back of the extension part, and a backing material that has fire retardant properties and covers at least the exposed surface in the longitudinal direction of the phenol foam board. and laminating the phenol foam plate in the middle of reaction foaming of the fire-retardant foam,
A siding board characterized in that the phenol foam board is adhered by the self-adhesive property of the fire-retardant foam.