JPH0352368Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] 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. [Prior Art] A considerable number of boards of this kind have been put on the market, in which a heat insulating material, particularly polyurethane foam or polyisocyanurate foam, is filled between the front surface material and the back surface material. 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 composites of rock wool, 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, the non-combustible material B is placed at a position deviated by a width of Δl from the side wall on the side of the male connection part, and due to the laminated structure, the non-combustible material B is in an unstable state until the foam A foams considerably. This resulted in disadvantages such as the reaction and foaming of the foam A being inhibited, resulting in poor productivity, a decrease in yield, and leakage to the outside of the foam A. [Purpose of the invention] In order to eliminate these drawbacks, the present invention provides a board with a laminated structure consisting of a surface material, a fire-retardant foam, a phenol foam plate, and a fire-retardant back material, and includes male holes at both ends of the surface material. A type connecting part and a female type connecting part are provided, and lightweight aggregate is dispersed in the fire-retardant foam, and the phenol foam board is supported by the lightweight aggregate, making it easy to place the phenol foam board. , by improving the fire resistance of the fire-retardant foam, and by bonding the surface material and the phenol foam plate with self-adhesive properties when the fire-retardant foam is formed, we aim to reduce the use of adhesives and improve strength. , the back and sides of the phenol foam board are covered with a fire-retardant backing material,
By controlling the brittleness, water absorption, and unique color appearance of the phenol foam board, we propose a board that has fireproof performance and is lightweight enough to pass the three tests mentioned above. [Structure of the invention] An embodiment of the board according to the 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, 8 is a male type connection part, 12 is a female type connection part, 15 is a lightweight aggregate, 16 is a fire-retardant foam (hereinafter simply referred to as foam), and 17 is a phenol foam board (hereinafter, referred to as "foam"). 19 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 the rectangular decorative surface 2 and the 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 protrudes outward, and the insertion A male connecting portion 8 is provided with an edge 6 and a tongue piece 7 is provided at the tip of the insertion edge 6 as necessary, and a U-shape is formed by bending the lower edge of the side wall 4 inward and protruding outward again. It is composed of a female-type connecting part 12 consisting of a shaped engagement groove 9 and an extension part 11 whose lower edge 10 projects outward. Note that the female connecting portion 12 may be provided with a protrusion 13 and a tongue piece 14 if necessary. The lightweight aggregate 15 is dispersed within the foam 16 and functions as a fire retardant and a bulking material for the foam 16. The materials include natural lightweight aggregates such as volcanic gravel, by-product lightweight aggregates such as gypsum slag, and charcoal shells.
It is made of artificial lightweight aggregate made from shale, clay, slate, fire ash, etc., which is expanded by firing with the addition of a foaming agent. To explain further, it is a porous lightweight aggregate 15,
They are distributed in the form 16 and have the function of absorbing gas and smoke generated in the form 16 under high heat, preventing flashover, and reducing the amount of the form 16 used in manufacturing the board. . Furthermore, the lightweight aggregate 15 is extended from the decorative surface 2 to the extension portion 1.
If the height to 1 is h ₁ , then the particle size of lightweight aggregate 15 is
It is made by granulating h ₂ so that the relationship h ₁ ≒ h ₂ is satisfied, and when the foam board 17 is placed, it functions as a spacer and allows the foam board to be placed stably. be. The foam 16 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.
The raw material is discharged into the concave portion 5, reacted and foamed, and the surface material 1 and the foam plate 17 are fixed together with the self-adhesive property during foaming. Specific examples thereof include polyisocyanurate foam, nurate-modified polyurethane foam, polyphenylene foam, or long and short glass fibers,
Carbon fiber, powdered aluminum (including fine powder), 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, silicic acid (white carbon), aluminum silicate, silicic acid Calcium, hydrated calcium silicate, calcium sulfoaluminate, gypsum, silica, silica gel, magnesium hydroxide, graphite powder, straight powder, sericite, barite, waxite clay, attapulgite, potassium feldspar, soda feldspar, barium feldspar,
Add one or more of phenol foam powder, alumite, antimony trioxide, xonotrite, tobermorite, perlite grains, shirasu balloons, alumina bulbs, glass grains, well-known flame retardants, etc. to 100 parts by weight of the raw material of Form 16, 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 16 forms a carbonized layer under high heat. The foam board 17 may be a resol type, a novolac type, or a benzilik type phenol foam, and is made of a single substance or one or more of the above-mentioned inorganic fibers, inorganic powders, lightweight aggregates, etc., and has a density. is 30~100Kg/ ^m3 , thickness is about 5~50mm, width is 180~900mm, length is 1800~7272
It is a molded body with a diameter of about mm, is spaced by l ₁ from the tip of the insertion edge 6, and is placed on the lightweight aggregate 15, the engagement groove 9, and the extension part 11, and has a recessed part 8a for connection. It is something that forms. Note that the recessed portion 8a is designed so that the back surfaces are flush with each other without any gaps when the boards are connected.
It is formed so that the foam board 17 covers the entire base, and is provided so that the foam board 17, which has excellent fire prevention and heat resistance, is also present under the joint (not shown). be. Reference numeral 18 is an adhesive for bonding a backing material 19, which will be described later, to the foam board 17. 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 10, and the back surface of the extension part 11. The back surface material 19 covers at least the back surface of the foam board 17 via the adhesive 18, and is mainly used to improve fireproofness, waterproofness, weather resistance, aesthetics, and strength. The materials include, for example, kraft paper, waterproof kraft paper, asbestos paper, waterproof asbestos paper, metal foil (Al,
Pb, Cu, Fe), glass fiber nonwoven fabric, synthetic resin sheet, and a sheet-like material obtained by laminating, vapor depositing, etc. one or more of these. 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. In other words, 0.27 mm thick color steel plate as surface material 1 , lightweight aggregate 15
is obsidian, the foam 16 is polyisocyanurate foam (density after filling is 30Kg/m ³ ), the foam board 17 is a resol type phenol foam board with a density of 50Kg/m ³ and a thickness of 15mm, and the adhesive 18 is acetic acid. The vinyl adhesive and backing material 19 were made by laminating aluminum foil (thickness: 7 microns) onto asbestos paper (70 g/m ^{2 )} . 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 the noncombustible material B were adhered using a vinyl acetate adhesive. [Table] [Other Embodiments] 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. 4 a-p and 5 a-q. That is, FIGS. 4a to 4p show modified examples of the surface material 1 , which can be formed for any purpose. Also, Figure 5 a-q
1 shows other embodiments of various structures such as the male type connecting part 8 and the female type connecting part 12 , 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 11 up to the upper surface, and caulking agent 20 applied to the tip.
Figure g shows a board in which the back surface of the form board 17 is covered with the back material 19 and then protrudes outward from the female connecting part 12 by ΔW, and Figure h shows the back surface material 19.
After covering the back side of the form board 17 with the board, it protrudes outward from the female connecting part 12 side by ΔW, bends inward again, and then covers the side surface of the form board 17. Female connection part 12 of
A board in which the exposed surface of the foam plate 17 is covered with a backing material 19 that protrudes further outward, and figure j shows a board in which the backing material 19 is disposed halfway between the extension part 11 and the form board 17, and figure k shows a backing material. A board with one end of 19 held between the tongue pieces 7, Figure l shows a board with an intermediate panel 21 arranged between the form 16 and the form plate 17, m
The figure shows a board with a hot-melt film heat-sealing adhesive 22 on the back side of the extension part 11, and the figure n shows a board with a receiving piece 23 on the male connecting part 8 , and a lightweight aggregate 15.
In addition, the board supporting the form board 17 with the receiving piece 23, and the surface material 1 shown in FIG.
The upper surface of the recess 8a is covered with the receiving piece 23, and the back material 19
The board placed between the receiving piece 23 and the form 16 after covering the form board 17 with the fireproof paint 2 on the front or back side (not shown) of the insertion edge 6 is shown in the figure p.
4 is applied to the board, figure q shows the surface of the extension part 11,
Alternatively, it is a board whose back surface (not shown) is coated with fireproof paint 24. In addition, FIG. 4 a to p shows surface material 1.
In addition, the adhesive 18 is omitted in FIGS. 5a to 5q. Of course, Figure 4,
It is also possible to create a board that combines each of the components shown in FIG. [Effects of the invention] As mentioned above, according to the board according to the 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, and lightweight aggregate is dispersed within the foam. As a result, the lightweight aggregate absorbs flammable gas and smoke and prevents it from leaking outside, allowing it to pass fire protection tests, quasi-nonflammability 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 lightweight aggregate and the lower edge of the engagement groove support the phenol foam board at the extension part,
In addition, because lightweight aggregate was dispersed within the foam,
It is characterized by the ability to reduce the amount of foam used, and to produce 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. Perspective views showing one embodiment of the material, Figures 4a-p, Figure 5a
-q are explanatory diagrams showing other embodiments. 1 ... Surface material, 15 ... Lightweight aggregate, 16 ... Fire-retardant foam, 17 ... Phenol foam board, 19 ... Fire-retardant back material.

Claims (1)

[Scope of utility model registration request] A male comprising a rectangular decorative surface, both ends of the decorative surface bent inward to form two side walls with a concave cross section, and one edge of the side wall bent outward to form an insertion edge. A type connecting portion is provided, the edge of the other side wall is bent inward, and protrudes outward again to form an engagement groove having a U-shaped cross section, and the lower edge of the engagement groove is an extension that protrudes outward. A surface material having a female connecting part provided with a part, a foam having fireproof properties that is discharged as a raw material into the concave part of the surface material and filled by reaction and foaming, and a lightweight aggregate dispersed within the foam. and a phenol foam plate on the back side of the form, which is offset by l ₁ from the insertion edge on the male connection part side, and laminated on the engagement groove, the lower edge, and the back side of the extension part, and at least the longitudinal direction of the phenol foam plate. The phenol foam board is laminated in the middle of reaction foaming of the fire-retardant foam, and the phenol foam board is laminated in the middle of the reaction foaming of the fire-retardant foam, and the phenol A siding board characterized in that a foam board is bonded to the foam board, and the lightweight aggregate has a particle size approximately equal to the height from the decorative surface to the extension part, and is dispersed within the foam so as to support the foam board.