JPH0422650Y2 - - Google Patents

Description

[Detailed Description of the Invention] 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, boards made of only phenol foam instead of polyisocyanurate foam, boards made of gypsum board and polyisocyanurate foam, or boards made of composites of polyisocyanurate foam and rock wool boards have also been proposed. However, boards using core materials made only of resol type phenol foam lack adhesive properties and are brittle, making it difficult to use them alone. In addition, gypsum boards and boards that are simply composites of rock wool and polyisocyanurate foam are heavy and expensive.
Moreover, there was a disadvantage of lack of productivity. moreover,
A composite board 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 in raw material state on the back side of the surface material C, as shown in FIG. The non-combustible material B is placed at a position deviating from the polyisocyanurate foam A by a width of △l, and due to the laminated structure, the non-combustible material B is placed under unstable conditions until the foam A foams considerably. This caused disadvantages such as the reaction and foaming of the foam A was inhibited, the productivity was poor, the yield was lowered, and the foam A leaked 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 can be easily placed, is highly productive, and prevents the fire-retardant foam from leaking to the outside. By using self-adhesive properties during formation of the fire-retardant foam to reduce the need for adhesives and improve strength, the back and side surfaces of the phenol foam board are made with fire-retardant backs. By covering the phenol foam board with a material, it suppresses the brittleness, water absorption, and peculiar color appearance of the phenol foam board, and also has fire resistance and weight reduction that can pass the three tests mentioned above.
This paper proposes a board whose joints are airtight and waterproof. 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 17 is a fire-retardant foam (hereinafter referred to as
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)
It is. To explain further, the surface material 1 is made of a thin metal plate as shown in FIG. provided, said side wall 3
The lower end edge of is bent inward, then bent downward to form a notch 5, and the tip of the notch 5 is bent inward,
The receiving piece 6 is bent outward again, and the tip of the receiving piece 6 protrudes outward to provide an insertion edge 7.
The lower end edge of the side wall 4 is bent outward, then bent downward, and then further bent inward to form an engaging protrusion. 10, and the lower side of the engagement protrusion 10 is bent into a U-shape at the same position as the side wall 4, or is formed by protruding inward from the side wall 4 and then bent into a U-shape (not shown). It is composed of a female connecting part 13 provided with an engaging groove 11 and an extension part 12 whose lower edge 11a 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 surface material 1 has a concave portion 16 formed by the male connecting portion 9 and the female connecting portion 13, and the opening of the concave portion 16 is narrowed by the receiving piece 6 and the engagement groove 11. _W1 , and the dimensions are such that the form plate 18 is placed on the front surface 6a and lower edge 11a of the receiving piece 6, and the back surface of the extension part 12. This is to prevent the foam plate 18 from falling into the space of the concave portion 16 when the foam 17 is discharged as a raw material, and to support it in a stable state. Further, since the recessed portion 16 has a rectangular cross section, the raw material of the foam 17 does not leak outside from other than the opening portion during reaction and foaming, and functions as a mold material. Further, the receiving piece 6 is used to reinforce the insertion edge 7, to prevent leakage from the lower end of the side wall 3 of the form 17, and to place one end of the form plate 18. In addition, as shown in FIG. 4, the engagement protrusion 10 is fitted into the notch 5 when the insertion edge 7 is engaged with the engagement groove 11 during engagement, improving the engagement force between both boards. , improves the airtightness and waterproofness of the connection part, increases the insulation property, prevents hot air from entering the interior in the event of a fire, and leaks gas and smoke generated from the form 17 to the outside. It also has the function of preventing Form 17
is mainly used for fireproof materials, insulation materials, lining materials, cushion materials,
It functions as a waterproofing material, a moisture-proofing material, and an adhesive, and is discharged as a raw material into the concave portion 16, reacts and foams, and fixes the surface material 1 and the foam board 18 together with the self-adhesive property during foaming. It is something. Specific examples include polyisocyanurate foam, nurate-modified polyurethane foam, polyphenylene foam, long and short glass fibers, carbon fibers, powdered (including fine powder) aluminum, and alumina hydroxide. , 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. The foam board 18 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 or inorganic powder. , one or more types of lightweight aggregates ^are added, the density is 30-100Kg/m, and the thickness is 5-50mm.
It is a molded body with a width of 180 to 900 mm and a length of 1800 to 7272 mm, and is placed at a distance of l ₂ from the tip of the insertion edge 7 and within a range of W ₂ on the receiving piece 6,
A recessed portion 9a for connection is formed. The distance l ₂ from the tip of the insertion edge 7 to the side wall of the form board 18 is l 2 where _{l 1} is the distance from the deepest part of the engagement groove 11 to the edge of the board on the female connecting part 13 side. =l ₁
There is a relationship between Note that the recess 9a is formed so that when the boards are connected (FIG. 4), the back surfaces are flush with each other without any gaps, and the foam board 18 is placed over the entire base. This is also provided to ensure that the form plate 18 is present. To explain further, the foam plate 18 is laminated during the reaction and foaming of the foam 17,
At least the width W ₁ of the opening of the recessed portion 16 is bonded by the self-adhesive property of the foam 17 . adhesive 19
is for adhering a back material 20, 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 19 is interposed on the entire exposed surface of the foam board 18, the lower edge 11a, the back surface of the extension part 12, and the surface 6a of the receiving piece 6. 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 material is
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 sheets laminated or vapor-deposited with one or more of these. It consists of a type of material. 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 plate 18 is made of polyisocyanurate foam (density after filling is 30 Kg/m ³ ), the foam board 18 is resol type phenol foam with a density of 50 Kg/m ³ and a thickness of 15 mm, and the adhesive 19 is vinyl acetate adhesive, the back side The material 20 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 No. 8 was 10 mm. In addition, the comparative example has the shape shown in Fig. 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 back 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. That is, FIGS. 5A to 5W show modified examples of the surface material 1 , which can be formed for any desired purpose. Also, Figure 6 a to u
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 i shows a board with caulking agent 21 planted in each position, and figure j shows the backing material 20 covering the end of the extension 12 up to the upper surface, and caulking agent 21 applied to the tip.
Figure K shows a board in which the form board 18 is projected by l ₃ from the edge of the female connecting part 13 , and the exposed surface of the form board 18 is covered with a backing material 20.
Figure l shows the back side of the form board 18 covered with the back material 20, and then the board protrudes outward from the female connecting part 13 by ΔW. Figure m shows the back side of the form board 18 covered with the back material 20, and then the female 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 18.
0 is a board with one end of the board held between the tongue pieces 8, and the back material 20 is covered between the form plate 18 and the surface 6a of the receiving piece 6, between the form plate 18 and the lower edge 11a, and between the back surface of the extension part 12. Figure p shows a board with a face material 22 interposed between the form 17 and the form plate 18, and figure Q shows the lower edge 11a, a hot-melt film-shaped board between the back surface of the extension part 12 and the form plate 18. A board with an adhesive 23 interposed therein, the figure R shows a board with a decorative groove 2a on the decorative surface 2, and the form board 18 is also supported on the back side of the decorative groove 2a, and the figure S shows the front or back surface of the insertion edge 7, or a notch. A board coated with fire-retardant paint 24 on the upper surface and side surfaces (not shown) of part 5; FIG. In the board coated with paint 24, figure U shows l ₄ from the innermost part of the engagement groove 11 to the tip of the engagement protrusion 10, l ₅ from the side wall 3 to the innermost part of the notch 5, and If the distance to the tip of the strip 10 is l ₆ and the distance from the tip of the insertion edge 7 to the innermost part of the notch 5 is l ₇ , then the relationship is l ₇ ≦l ₄ and l ₅ = l ₆ , and when engaged, the side wall 3 and side wall 4 are butted against each other. In addition, Figure 6 a~
In u, the adhesive 19 is omitted. Of course,
It is also possible to form a board by combining 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 has excellent fire resistance, heat insulation, and low smoke emission, and has a sufficient carbonized layer and excellent dimensional stability even under high heat. Filling the closed space with the foam plate prevents flammable gas and smoke from leaking to the outside, and in addition to the engagement between the insertion edge and the engagement groove at the connection part, Due to the double engagement between the protrusion and the notch, the engagement force at the connection part, airtightness, and waterproofness are improved, allowing it to pass fire protection tests, semi-flammability tests, and box tests. It has characteristics. In addition, since the fragile phenol foam board is sandwiched between the backing material and the plastic foam and bonded together, the phenol foam board can be sufficiently protected and its original properties can be effectively utilized. 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, insufficient discharge amount, etc., it does not immediately become a defective product, and it has the characteristic of being able to be produced with high efficiency and high yield.

[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 an explanatory diagram illustrating the construction state, and FIGS. 5 a to 6 are explanatory diagrams showing other embodiments. 1 ... Surface material, 5... Notch, 6... Receiving piece,
10... Engaging protrusion, 17... Fire-retardant foam, 18... Phenol foam plate, 20...
Backing material with 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, one edge of the side wall is bent inward and then bent downward to provide a notch,
The tip of the notch is bent inward and bent outward again to form a receiving piece, and the tip of the receiving piece is provided with a male connecting portion that projects outward to form an insertion edge, and The end edge of the side wall is bent outward, the tip thereof is bent downward, and then bent inward to form an engagement ridge, and the lower edge tip of the engagement ridge is projected inward. , or a surface material provided with a female-shaped connecting portion consisting of an engaging groove having a U-shaped cross section and an extension portion formed by protruding the lower edge of the engaging groove outward; A fire-retardant foam that is discharged as a raw material into a concave part of the material and filled by reaction and foaming, and a distance from the deepest part of the engagement groove to the edge of the extension part on the back surface of the foam.
l A phenol foam plate that is offset from the edge of the insertion edge by the same distance as ₁ and laminated on the receiving piece, the engagement groove, the lower edge, and the back side of the extension part, and at least the length of the phenol foam plate in the longitudinal direction. The phenol foam board is laminated in the middle of reaction foaming of the fire-retardant foam, and the phenol foam board is formed by the self-adhesive property of the fire-retardant foam. What is claimed is: 1. A siding board characterized in that an engaging protrusion is fitted into the notch when engaged.