JPH047303Y2 - - 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, 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 board and polyisocyanurate foam are heavy, lack mechanical strength because the surface material and core material are integrated using adhesives, are expensive, and have low productivity. There was a disadvantage of lack of. Furthermore, a composite board of polyisocyanurate foam A and noncombustible material B such as gypsum board or rock wool board is produced by discharging the above foam in raw material state on the back side of surface material C as shown in Figure 1. On the top, the non-combustible material B is placed at a position offset 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 placed under unstable conditions until the foam foams considerably. There were disadvantages such as poor productivity, decreased yield, inhibition of foaming of the foam A, and leakage 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, so that the phenol foam plate can be easily and reliably placed on the back surface of the surface material without any fluctuation, and the production speed is reduced. In addition to being highly durable, the foam does not leak to the outside and has fire retardant properties.The self-adhesive properties of the foam during its formation reduce the amount of adhesive used and improve the strength. The back side of the phenol foam board is coated with a fire-retardant backing material to suppress the brittleness, water absorption, and peculiar color appearance of the phenol foam board, and it also has fire-retardant performance and light weight that can pass the three tests mentioned above. This paper proposes a board that is designed to 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, 15 is a fire-retardant plastic foam (hereinafter simply referred to as foam),
16 is a phenol foam board (hereinafter simply referred to as a foam board), and 17 is a back material having fireproof properties (hereinafter simply referred to as back material). To explain further, the surface material 1 is formed by forming a flat plate or an embossed metal thin plate as shown in FIG. A concave portion 5 formed by the bent side walls 3 and 4 and a lower edge of the side wall 3 protrude outward;
The tip is folded inward, and the male connecting portion 8 is provided with the insertion edge 6 and the receiving piece 7 by being made to protrude inward from the side wall 3. A U-shaped engagement groove 9 formed to protrude toward the outside, and an extension portion 1 whose upper edge 10 protrudes outward.
1, a protrusion 13 and a tongue piece 14 provided as necessary. To explain further, if the width of the opening of the recessed portion 5 formed by the receiving piece 7 and the engagement groove 9 mutually extending from the lower ends of the side walls 3 and 4 is W ₁ , this opening width W ₁ is equal to Surface 7a of receiving piece 7
The lower edge 10 is formed to have a width smaller than that placed on the back surface of the extension part 11. This is form 1
This is to prevent the foam plate 16 from falling into the space of the concave portion 5 and to support it in a stable state when the raw material 5 is discharged. Further, since the concave portion 5 has a rectangular pot-like cross section, the raw material of the foam 15 does not leak outside from other than the opening portion during reaction and foaming, and functions as a mold material. Furthermore, the insertion edge 6 is double-layered, and due to the presence of the receiving piece 7, it is reinforced to withstand shock during transportation. Moreover, the receiving piece 7 has a form 15
To prevent leakage from the lower end of the side wall 3 of the foam 15, to prevent toxic gas and smoke from leaking from the foam 15 in the event of a fire,
and on which one end of the form plate 16 is placed. In addition, the foam 15 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.
Discharge the raw material into the concave portion 5, react and foam,
The surface material 1 and the foam plate 16 are fixed together by self-adhesion during foaming. Specific examples thereof include polyisocyanurate foam, nurate-modified polyurethane foam, polyphenylene foam, or long or short glass fibers, carbon fibers, or powder (including fine powder).
aluminum, alumina hydroxide, calcium phosphate, bentonite, carbon black, limestone, calcium bicarbonate, calcium carbonate, diatomaceous earth, vermiculite, quartz (flint), lithium hydroxide, activated alumina, asbestos, kaolin clay, mica, talc, Silica gel, magnesium hydroxide, slate powder, graphite powder, sericite, wollastonite, aluminum silicate, silicic acid (white carbon), calcium silicate, hydrated calcium silicate, calcium sulfoaluminate, gypsum,
Barite, waxite clay, attapulgiyaite, potassium feldspar, soda feldspar, barium feldspar, phenolform powder, alumite, antimony trioxide,
It also includes foams in which 5 to 200 parts by weight of one or more of xonotlite, tobermorite, pearlite grains, shirasu balloons, alumina bulbs, glass grains, well-known flame retardants, etc. are added to 100 parts by weight of Foam 15. Note that this type of additive may be surface-treated with a surfactant. In particular, it is preferable that this foam 15 forms a carbonized layer under high heat. 16 is a foam plate, the density is 30~100Kg/m, ^{the third} place, and the thickness is 5~
It is about 50 mm, the width is about 180 to 900 mm, the length is about 1800 to 7272 mm, and it is separated by l ₁ from the side wall 3, and the receiving piece 7
It is placed on top within a range of W ₂ and forms a recessed portion 8a. Note that the recessed portion 8a is formed to make the back surfaces substantially flush when the boards are connected and to cover the entire base with the highly fireproof foam board 16. sex,
This is provided to strengthen heat insulation and engagement force. Specific examples of the foam board 16 may be any of the resol type, novolac type, and benzilik type, and may be made of one type, such as a single piece or one containing inorganic fiber or lightweight aggregate. The back material 17 covers and adheres at least the back surface of the foam board 16 in the longitudinal direction via an adhesive (not shown), and is mainly used to improve fire resistance, weather resistance, aesthetics, and strength. It is. 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, aluminum hydroxide paper, gypsum paper, and one type of these. It consists of a sheet-like material made by laminating and vapor-depositing the above materials. 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 specifications. In other words, the surface material 1 is a 0.27 mm thick color steel plate, form 1.
5 is polyisocyanurate foam (density after filling is 30Kg/m ³ ), foam plate 16 is a resol type with density 50Kg/m ³ and thickness 15mm, adhesive is vinyl acetate adhesive, backing material 17 is Aluminum foil (7 microns thick) is covered with asbestos paper (70 microns thick).
g/m ² ). Note that the mounting width W ₂ of the receiving piece 7 and the form board 16 was 10 mm. In addition, the comparative example has the shape shown in FIG.
Polyisocyanurate foam (density after filling is 30 kg/m ³ ) was used, B was a gypsum board (thickness 15 mm), and surface material C was a colored steel plate with a thickness of 0.27 mm.

[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-l and 5a-n. That is, FIGS. 4A to 4L show modified examples of the surface material 1 , which can be formed for any purpose. Also, Figure 5 a to n
2 shows other embodiments of the board according to the present invention, in which figures a to e show a board with caulking agent 18 planted at the positions shown in the figures, and figure f shows a board in which the end of the extension part 11 is covered with a backing material 17. Figure g shows a board in which the back surface material 17 is coated on the back surface of the foam board 16 and then protrudes outward from the female connecting portion 12 by an amount W.
Figure h shows that after covering the side and back surfaces of the recessed part 8a of the form plate 16 of the back material 17, it protrudes outward by W on the female connecting part 12 side, its tip is bent, and the protruding part is doubled. , and then a board that covered the side surface of the form board 16. In addition to covering the exposed part of the form board 16 with the back material 17, the board shown in FIG.
0, a board that covers the contact area between the back surface of the extension part 11 and the form board 16, figure j shows a board with a decorative groove 2a that supports the form board 16 on the decorative surface 2, figure k shows the lower edge 10, A board with a heat-sealable tape 19 arranged on the back side of the extension part 11;
Figure l shows a board with fire-retardant paint 20 applied to the front or back side (not shown) of the extension part 11, and figure m shows a board with fire-retardant paint 20 applied to the front or back side (not shown) of the insertion edge 6. , n shows a board in which the tip of the extension part 11 is bent vertically downward, and the tip is bent horizontally, so that the end of the foam plate 16 is held between the ends. 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 resistant, has low smoke emission, forms a sufficient carbonized layer, and has excellent dimensional stability even under high heat, making it suitable for fire protection tests, quasi-noncombustibility tests, and box tests. There are characteristics that allow you to pass the exam. In addition, since the fragile foam plate is sandwiched between the backing material and the foam and bonded together, it can be sufficiently protected and its original properties can be effectively utilized. Furthermore, since the surface material and the foam board form a mold that is closed except for the longitudinal end faces, there is no leakage to the surface side of the fire-resistant foam surface material, and even if there is insufficient foaming or discharge volume, the product will be immediately defective. In addition, there is no need to use adhesives to integrate the form plate and the surface material, and since the form plate is supported by the engagement groove, extension part and receiving piece, the reaction during formation of the form is reduced. , without inhibiting foaming, at low cost, and with high efficiency.
Moreover, it has the characteristic of being able to be produced at a high yield. Moreover, since the foam is closed by the surface material and the foam board, it has the characteristic of preventing gas and smoke from leaking under high heat conditions. Furthermore, the insert edge is double layered and is sufficiently reinforced by the presence of the receiving piece.
What's more, the board is made of highly insulating bifoam and is self-adhesive or glued together.
It has high insulation properties and has no moisture or water absorption properties.

[Brief explanation of the drawing]

The first nest is a perspective view showing an example of a conventional siding board, FIG. 2 is a perspective view showing an example of the siding board according to the present invention, FIG. 3 is a perspective view showing an example of the surface material, and FIG. a-l, Figure 5 a-n
FIG. 3 is an explanatory diagram showing another embodiment. 1 ... Surface material, 15... Plastic foam having fire retardant properties, 16... Phenol foam board, 17... 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 protrudes outward and its tip is bent inward. , a male connecting portion is provided which extends and projects inwardly from the side wall to form a receiving piece and an insertion edge, and the edge of the other side wall is bent inwardly and then outwardly to form a cross section U. A metal surface material consisting of a female connecting part forming a letter-shaped engagement groove and an extension part projecting outward from the lower edge of the engagement groove; A fire-retardant foam filled by extrusion, reaction, and foaming, and a fire-retardant backing material in which a phenol foam board is laminated on the back side of the foam, and the back surface of the phenol foam board is covered at least in the longitudinal direction. The fire-retardant foam reacts and foams between the surface material and the phenol foam board, and the self-adhesive properties at that time bond the surface material and the phenol foam board together, and also bond one side of the phenol foam board. The part is located on the surface of the end of the receiving piece and forms a recess, and the other end is arranged on the back surface of the extension part, and the back material is bonded with an adhesive. A siding board characterized by having pieces of wood glued together.