JPH0350186Y2 - - 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, and
This relates to a board with excellent insulation 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, instead of polyisocyanurate foam, for example, boards made only of phenol foam, boards made of gypsum board and polyisocyanurate foam, or composite boards of polyisocyanurate foam and rock wool boards have also been proposed. However, in resol-type boards that use a core material made only of phenol foam, the phenol foam is formed using a strong acid curing agent, and the residual strong acid component corrodes the surface material, or the phenol foam becomes adhesive. It was difficult to use alone because it was chipped and brittle. Furthermore, boards that are simply composites of gypsum boards, rock wool boards, polyisocyanurate foam, etc. have the disadvantage of being heavy, expensive, and lacking in 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. On top of that, a noncombustible material B is placed at a position offset by a width of Δl from the side wall of the surface material C on the male connection part side,
Due to the laminated structure, the non-combustible material B is the same as the above form A.
The foam A was placed under unstable conditions until it foamed considerably, which inhibited the reaction and foaming of the foam A, resulting in poor productivity and other disadvantages such as a decrease in yield and leakage of the foam A to the outside. . In order to eliminate these drawbacks, the present invention has a shape in which the recessed opening of the surface material is closed with a phenol foam plate to prevent the fire-retardant foam from leaking to the outside, and furthermore, the exposed surface of the phenol foam plate is The phenol foam board is coated with a backing material that has fire retardant properties to suppress the brittleness, water absorption, and peculiar color appearance of the phenol foam board.Furthermore, a fire retardant is applied near the side walls of the male and female joints of the facing material. Both sides are covered with a filler material to improve the fire resistance of the joint under high heat.
This paper proposes a fireproof board that can pass the three tests mentioned above. 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 type connection part, 13 is a female type connection part, 16 is a fire retardant, 17 is a fire-retardant foam (hereinafter simply referred to as a foam board), and 18 is a phenol foam board (hereinafter simply referred to as a foam board). 20 is a fire-retardant back material (hereinafter simply referred to as a back material). To explain further, the surface material 1 is formed from a thin metal plate as shown in FIG.
A concave portion 5 is formed by a rectangular decorative surface 2 and side walls 3 and 4 whose both side edges are bent inward at a right angle or at an arbitrary angle, and the lower edge of the side wall 3 is bent inward, The receiving piece 6 is bent outward again, the tip of the receiving piece 6 protrudes outward, and the insertion edge 7
A male connecting part 9 is provided with a tongue piece 8 as required at the tip of the insertion edge 7, and a U-shaped connecting part 9 is formed by bending the lower edge of the side wall 4 inward and protruding outward again. It consists of a female connecting part 13 provided with an engaging groove 10 and an extension part 12 whose lower edge 11 protrudes outward. Note that the female connecting portion 13 may be provided with a protrusion 14 and a tongue piece 15 if necessary. To explain further, the concave portion 5 has an opening width W ₁ formed by the receiving piece 6 and the engagement groove 10 extending mutually from the lower ends of the side walls 3 and 4, and the form plate 18 has a surface 6a of the receiving piece 6 and a bottom thereof. Since the shape is such that it is placed on the back surface of the edge 11 and the extension part 12, the recessed part 5 is closed by the form plate 18, and the form 17
When reacting and foaming, there is no leakage to the outside from any part other than the opening, and the foam 17 does not leak under high heat.
It has the function of preventing gas and smoke generated from leaking to the outside. Further, the receiving piece 6 not only reinforces the insertion edge 7 but also functions as a mold for filling the fire retardant 16. The fire retardant 16 includes a U-shaped portion 3a formed by the receiving piece 6 of the surface material 1 , the side wall 3, and the decorative surface 2, and a U-shaped portion 4a formed by the upper edge 11a of the engagement groove 11, the side wall 4, and the decorative surface 2. When the joints between the boards (not shown) are exposed to high heat, crystallization water is released, which directly cools this part, and gradually foams to suppress heat conduction, and the joints This contributes to improving the fire resistance of Specific examples include borax (pentahydrate, decahydrate), sodium metaborate, sodium metasilicate, compositions consisting of borax, boric acid, and water glass, compositions consisting of borax, caustic soda, and water; These include compositions made by mixing sodium phosphate and sodium polyphosphate, and foamable inorganic materials made of mixtures.
Further, the above composition may be formed into a predetermined shape from PVA, CMC, calcium carbonate, and if necessary, open-cell organic foam, inorganic foam, or string-like material made of inorganic fiber used as a reinforcing material. The foam 17 mainly functions as a fireproofing material, a heat insulating material, a lining material, a cushioning material, a waterproofing material, a moisture proofing material, and an adhesive, and is discharged as a raw material into the concave portion 5 to react and foam. Specific examples include polyisocyanurate foam, nurate-modified polyurethane foam, polyphenylene foam, long and short glass fibers, carbon fibers, powdered (including fine powder) aluminum, hydroxide Alumina, aluminum phosphate, bentonite, glass, carbon black, limestone, lithium hydroxide, activated alumina, calcium bicarbonate, calcium carbonate, diatomaceous earth, vermiculite, quartz (flint) asbestos,
Kaolin clay, mica, talc, wollastonite, aluminum silicate, silicic acid (white carbon),
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, phenolform powder, alumite, antimony trioxide, xonotrite, tobermorite, or pearlite grains, shirasu balloon,
Add 5 parts by weight of one or more of alumina bulbs, glass particles, well-known flame retardants, etc. to 100 parts by weight of the raw material of Form 17.
It also includes foams added in an amount of ~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 17 forms a carbonized layer under high heat. Furthermore, the foam plate 18 is made of a molded body, ^with a density of 30 to 100 kg/m and a thickness of 5 to 50 mm.
It is placed at a distance l ₁ from the tip of the insertion edge 7 and within a range W ₂ on the receiving piece 6, and forms a recess 9a. Specific examples of the foam plate 18 include resol type, novolac type, and benzilik type, and may be made of a single substance or one or more of the above-mentioned inorganic fibers, inorganic powders, lightweight aggregates, etc. added thereto. To explain further, the form plate 18 is placed over the width W ₂ on the lower edge 11, the extension part 12, the opening of the recessed part 5, and the surface 6a of the receiving piece 6, and closes the recessed part 5 and forms the insertion edge. If the distance from the tip of 7 to the side surface of the form board 18 is l ₁ and the distance from the deepest part of the engagement groove 10 to the side edge of the board on the female connecting portion 13 side is l ₂ , then l ₁ ≒ l ₂
Place it so that the relationship is as follows. The depressions 9a are formed to ensure that the back surfaces are flush with each other when the boards are connected, and to allow the foam board 18, which has good dimensional stability under high heat, to cover the entire base. A foam board 18 having heat insulating properties is also present at the bottom of the joint part (not shown), and is provided to strengthen the fire prevention and heat insulating properties of the joint part. Reference numeral 19 denotes an adhesive for bonding a backing material 20, which will be described later, to the foam board 18. Examples include rubber-based materials, starch-based materials, synthetic resin-based materials, and inorganic materials with fire retardant properties. In addition, in FIG. 2, the adhesive 1 is also applied to the entire exposed surface of the form board 18, the lower edge 11, the back surface of the extension part 12, and the surface 6a of the receiving piece 6.
9 shows a board with 9 interposed therebetween. The back surface material 20 covers at least the back surface of the foam board 18 via an adhesive 19, and is mainly used to improve fireproofness, waterproofness, 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, Fe), glass fiber nonwoven fabric, synthetic resin sheet, and one of these.
It consists of a sheet-like material made by laminating, vapor-depositing, etc. 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 17, is used as the surface material 1 .
The foam board 18 is a resol type with a density of 40 Kg/m ^{3 and} a thickness of 15 mm, and the backing material 20 is made of aluminum foil (7 microns thick) made of asbestos. The paper was laminated to 70 g/m ² and the adhesive 19 was vinyl acetate. Note that the mounting width W ₂ of the receiving piece 6 and the form plate 18 was 10 mm. Also,
The comparative example has the shape shown in Fig. 1, and the materials are the same as in the examples, A is polyisocyanurate foam, noncombustible material B is phenol foam plate, and surface material C is 0.27.
The mm-thick color steel plate and the back material were the same as in the example, and the back material and noncombustible material B were made of vinyl acetate adhesive.

【table】

[Table] What has been described above is only one embodiment of the board according to the present invention, and it can also be formed as shown in FIGS. 4a-q and 5a-r. That is, FIGS. 4a to 4q show modified examples of the surface material 1 , which can be formed for any purpose. Note that the plate thickness is omitted. In addition, Figures a to r show other embodiments of various structures of the male connecting part 9 and the female connecting part 13, and figures a to e show caulking agent 21 implanted in each position. Board, Figure f shows a board in which the exposed surface of the foam board 18 is covered with a backing material 20, the edge of the extension part 12 is further covered with the edge of the backing material 20, and a caulking agent 21 is implanted at the tip of the board, g. The figure shows that after the back surface of the form plate 18 is covered with the back material 20, ΔW is applied to the outside of the female connecting portion 13.
The board that protrudes inward, bends inward again, and then covers the side surface of the foam board 18. Figure h shows the backing material 2.
0 is attached to the back side of the form board 18, and then the board is made to protrude by ΔW. Figure i shows a board in which the form board 18 is made to protrude from the side edge of the female connecting part 13, and figure j shows only the back side of the form board 18. A board coated with the backing material 20, Figure K shows a board with the backing material 20 extended to the bottom of the extension part 12, Figure l shows a board with the backing material 20 extended to the surface 6a of the receiving piece 6, and Figure M shows a female type. A board in which the backing material 20 of the connecting part 13 portion is doubled and the tongue piece 15 is covered at one end to strengthen the integration of the board. A board on which a sheet 22 impregnated with a foamable inorganic material is pasted, a board in which the vicinity of the recess 9a of the foam board 18 is covered with a sheet 22 impregnated with a foamable inorganic material, and a board in which the insertion edge 7 is attached. Figure q shows a board coated with fire-retardant paint 23 on the front or back side (not shown); Figure q shows a board coated with fire-retardant paint 23 on the front or back side (not shown) of the extension 12; It is a board with one end held between tongue pieces 8. Note that the adhesive 19 is omitted in FIG. Of course, it is also possible to create a board that arbitrarily combines each of FIGS. 4 and 5. As mentioned above, according to the board according to the present invention,
The back side of the board is covered with a foam board that is highly fireproof and heat insulating, has low smoke emission, and has excellent dimensional stability even under high heat, and is closed with a surface material and a foam board. gas generated from the foam,
This prevents smoke from leaking to the outside and prevents flashover.Furthermore, the U-shaped parts of the male and female joints of the surface material are filled with fire retardant, improving fire protection at joints. However, it has the characteristics of being able to pass fire protection tests, semi-flammability tests, and box tests. In addition, since the fragile foam board is sandwiched between the backing material and the foam, it can be sufficiently protected and its original properties can be effectively utilized.

[Brief explanation of drawings]

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. Perspective views showing one embodiment of the material, Figures 4a-q, Figure 5a
-r are explanatory diagrams showing other embodiments. 1 ... Surface material, 16... Fire retardant, 17... Fire retardant foam, 18... Phenol foam board, 20... Fire retardant back material.

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-type connecting portion consisting of a formed receiving piece and an insertion edge formed by projecting the tip of the receiving piece outward;
It consists of an engagement groove with a U-shaped cross section formed by bending the edge of the other side wall inward and protruding outward again, and an extension part formed by protruding the lower edge of the engagement groove outward. A surface material provided with a female connecting portion, a fireproof foam discharged as a raw material into a concave portion of the surface material and filled by reaction and foaming, and a phenol foam laminated during the reaction and foaming of the foam. a plate, and a fire-retardant backing material that covers the exposed surface of the phenol foam plate, the phenol foam plate being skewed by l ₁ from the tip of the insertion edge, and having a receiving piece, an engaging groove, Two layers are laminated on the lower edge and the rear surface of the extension part, and further formed by the side wall on the male connection part side of the surface material, the receiving piece, the decorative surface, and the side wall on the female connection part side, the engagement groove, and the decorative surface. A siding board characterized by having a U-shaped part filled with a fire retardant.