JPH0352366Y2 - - 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 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, 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, 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. In addition, gypsum boards and boards simply made from a composite of rock wool and 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.
On top of that, a noncombustible material B is placed at a position offset by a width of Δl from the polyisocyanurate foam A,
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, lower yields, and disadvantages such as leakage to the outside of the foam A. In addition, this type of board had the disadvantage that gas and smoke generated from Form A leaked from the joints under high heat, causing a flashover phenomenon, especially in box tests. 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 allows the phenol foam plate to be easily placed, is highly productive, and has fire retardant properties. There is no leakage to the outside, and in addition,
By using self-adhesive properties when forming the fire-retardant foam, we reduce the need for adhesives and improve strength. Furthermore, by coating the back side of the phenol foam board, we reduce the brittleness, water absorption, and other properties of the phenol foam board. To suppress the appearance of a peculiar color, the back side of the phenol foam board is coated with a backing agent having fire retardant properties, and the male connecting part side of the phenol foam board,
Alternatively, a film of foamable fireproofing paint that foams at high temperatures is formed on at least one side of the female connecting part, thereby providing a board with fireproofing properties 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, 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 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 form an insertion edge 7. A male connecting portion 9 is provided, and a tongue piece 8 is provided at the tip of the insertion edge 7 as necessary.
and a female-type connecting part provided with a U-shaped engagement groove 10 formed by bending the lower end edge of the side wall 4 inward and protruding outward again, and an extension part 12 with its lower edge 11 protruding outward. It is composed of 13. In addition,
The female connecting portion 13 may be provided with a protrusion 14 and a tongue piece 15 if necessary. To explain further, the opening of the concave portion 5 has an opening width of W ₁ due to the receiving piece 6 and the engagement groove 10, and the form plate 17 has a surface 6 of the receiving piece 6.
The dimensions are such that it can be placed on the back surface of the extension part 12, the lower edge 11, and the lower edge 11. This is form 16
This is to support the foam plate 17 in a stable state without falling into the space of the concave portion 5 when the raw material is discharged. Furthermore, since the concave portion 5 has a rectangular pot-like 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. moreover,
The receiving piece 6 is for reinforcing the insertion edge 7, preventing leakage from the lower end of the side wall 3 of the form 16, and resting one end of the form plate 17. 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 agent 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, baytonite, 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 , attapulgiaite, potassium feldspar, soda feldspar, barium feldspar, phenolform powder, alumite, antimony trioxide, zonolite,
It also includes forms in which 5 to 200 parts by weight of one or more of tobermorite, pearlite particles, shirasu balloons, atumina bulbs, glass particles, well-known flame retardants, etc. are added to 100 parts by weight of the raw material of Form 16. 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 form plate 17 may be a resol type, novolak type, or benzilik type phenol form, and may be a single piece,
Alternatively, it is made of one or more of the above-mentioned inorganic fibers, inorganic powders, lightweight aggregates, etc., and has a low density.
30~100Kg/m ^3rd place, thickness around 5~50mm, width 180~
It has a length of about 900 mm and a length of about 1800 to 7272 mm, and is spaced _l1 from the tip of the insertion edge to form a connecting recess 9a. To explain further, the distance from the tip of the insertion edge 7 to the side surface of the form board 17 is l ₁ , and the distance from the deepest part of the engagement groove 10 to the side edge of the female connecting portion 13 of the board is l ₂
Then, there is a relationship l ₁ ≒ l ₂ , and as shown in FIG. 4, the recess 9a is made so that when the boards are connected, the back surfaces are flush with each other without any gaps, and the form board 17 is made to cover the entire base. It is formed so that it can be covered, and is provided so that the form plate 17 is also present under the joint part α. Reference numeral 18 denotes an adhesive for bonding a back material 19 to the foam plate 17, which will be described later. 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 entire exposed surface of the form board 17, the lower edge 11, and the extension part 12 are shown.
This figure shows a board in which an adhesive 18 is also interposed on the back surface and the surface 6a of the receiving piece 6. Back material 19
At least the back side of the foam plate 17 is coated with adhesive 1.
8, and is mainly used to improve fire resistance, waterproofness, weather resistance, aesthetics, and strength. The materials include, for example, kraft paper, asbestos paper, waterproof kraft paper, waterproof asbestos paper, metal foil (Al, Pb, Cu, Fe), 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. 20 is a foaming fire-retardant paint that foams under high heat to close the gap at the bottom of the joint with the connecting board and completely prevent gas and smoke generated from the foam 16 from leaking outside. This is to avoid flashover during box tests. The materials are ammonium phosphate, phosphoric acid, melamine phosphate, guanidine phosphate, ammonium sulfate, sulfamic acid, ammonium sulfamate, ammonium bromide,
Sodium tungstate, boric acid, sodium borate, ammonium polyphosphate, organic phosphorus compounds,
Sulfonamides, 4-nitroaniline-2-
Foaming agents such as ammonium sulfonate salts, polyvinyl acetate emulsions, epoxy resins, polyurethane resins, silicone resins, vinyl chloride-vinylidene chloride copolymer resins, alkyd-polyester resins, alkyd resins, chlorinated rubber-vinyltoluene-butadiene resins , paints mixed with film-forming components such as amino alkyd resins, urea resins, and melamine resins, or water glass-based foaming fire prevention paints. To explain further, the foamable fireproofing paint 20 is
A coating film of foamable fireproofing paint 20 is implanted on at least one side of the form board 17 on the side of the male connection part 9 or the side of the female connection part 13 , directly on the form board 17, or on the surface of the back material 19. It is something to do.
As shown in FIG. 4, this foamable fire prevention paint 20 comes into contact with the back material 19 on the side of the foam board 17 of the adjacent board during construction, but it foams under high heat during a fire and This completely closes the gap at the bottom of the joint α with the board, prevents gas and smoke generated from the form 16 from leaking to the outside, and prevents hot air and fire from entering the interior. . 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 ), and the foam board 17 is made of Sorel type phenol phenyl (density 50 Kg/m ³ ).The mounting width W ₂ with respect to the receiving piece 6 is 10 mm. , aluminum foil (thickness 7 microns) is used as the back material 19.
laminated with asbestos paper 70g/ ^m2 ,
The adhesive 18 is vinyl acetate based. Further, the foamed fireproofing paint 20 has the following composition. PP-oxybis (benzenesulfonamide) 100 parts Vinyl chloride vinylidene chloride copolymer 32 parts Titanium oxide 7.1 parts Mertiisobutyl ketone 125 parts Dipentaesthritol 12 parts On the other hand, the comparative example has the shape shown in Figure 1, and the material is According to the example, A is polyisocyanurate foam, noncombustible material B is a phenol foam plate, surface material c is a 0.27 mm thick color steel plate, and the back material is the same as in the example. Vinyl acetate adhesive was used for adhesion.

[Table] What has been described above is only one embodiment of the board according to the present invention, and the board may also be formed as shown in FIGS. 5a-q and 6a-r. That is, FIGS. 5a to 5q show modified examples of the surface material 1, which can be formed for any purpose. Also, Figure 6 a to r
shows other examples of various structures of the male type connecting part 9 and the female type connecting part 13, and a to e
The figure shows a board with caulking agent 21 planted in each position, and the figure f shows the exposed surface of the foam board 17 covered with the backing agent 19, and the edge of the extension part 12 covered with the edge of the backing agent 19. A board with caulking agent 21 planted on its tip, Figure g shows foam board 17.
protrudes from the edge of the female connecting part 13 by W ₃ , and the exposed surface of the form board 17 is covered with the back material 19. Figure h shows the back surface of the form board 17 covered with the back material 19
Figure i shows a board that protrudes outward from the female connecting part 13 by ΔW after being covered with the back material 19. , a board that is bent inward again and then covers the side surface of the form board 17; Figure j shows a board with one end of the back material 19 held between the tongue pieces 8;
The figure shows the back material 19, the form board 17 and the receiving piece 6,
A board interposed between the extension portions 12, Figure l is a board with an intermediate material 22 interposed between the form 16 and the form plate 17, Figure M is a board with a hot melt board interposed between the back side of the extension part 12 and the form plate 17. A board with a film-like adhesive 23 interposed therebetween.
Figure o shows a board with foamable fireproofing paint 20 planted between the backing agent 19 and the foam board 17 on the side of the male connection part 9 of the foam board 17, p.
The figure shows a board with foamable fireproof paint 20 applied to the front or back side (not shown) of the insertion edge 7, and the figure q shows a board with fireproof paint 20 applied to the front or back side (not shown) of the extension part 12. The board shown in FIG. Note that the adhesive 18 is omitted in FIGS. 4 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 fireproof and heat insulating, low in smoke, and has a sufficient carbonized layer, and has excellent dimensional stability even under high heat. By filling the closed space with foam, and in addition, a foamable fire-retardant paint coating is planted on at least one side of the foam board, it is possible to completely prevent gas and smoke generated from the foam from leaking to the outside.
In order to prevent hot air and fire from entering the interior, it has the feature of passing fire protection tests, semi-flammability tests, and box tests. In addition, the brittle phenol foam board is sandwiched between the backing material and plastic foam and bonded together, providing sufficient protection and allowing effective use of its original properties. In addition, 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 all directions except for the longitudinal direction, which prevents leakage to the outside of the foam and prevents foaming. Even if the product is defective or has insufficient discharge volume, it does not immediately become a defective product, and it has the characteristics of being able to be produced with high efficiency and high yield.

[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 the constituent materials of the sanding board according to the present invention. FIG. 4 is a perspective view showing one embodiment of the surface material, FIG. 4 is an explanatory diagram illustrating a construction state, and FIGS. 5 a-q and 6 a-r are explanatory diagrams showing other embodiments. 1 ... Surface material, 16 ... Fire-retardant foam, 17 ... Phenol foam board, 19 ... Fire-retardant back material, 20 ... Foaming fire-retardant paint.

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, an insertion edge formed by projecting the tip of the receiving piece outward, and an end edge of the other side wall bent inward and protruding outward again. A surface material provided with an engagement groove having a U-shaped cross section and a female connecting portion consisting of an extension portion formed by protruding the lower edge of the engagement groove outward; and a concave portion of the surface material. a fire _- retardant foam that is discharged as a raw material and filled by reaction and foaming;
and a phenol foam plate laminated on the receiving piece, the engagement groove, the lower edge, and the back surface of the extension part, and a backing material having fire retardant properties that covers at least the exposed surface of the phenol foam plate in the longitudinal direction; The phenol foam plate is laminated in the middle of reaction foaming of the foam having fireproof properties, and the phenol foam plate is adhered by the self-adhesive property of the fire-retardant foam, and A siding board characterized in that at least one side surface on the connection side is coated with a foamable fireproofing paint.