JPH0474496B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention integrates a fire-retardant plastic foam between a surface material made of a thin metal plate and a back material made of a fire-retardant sheet-like material, thereby reducing the absolute amount of combustible materials. At high temperatures, the air cycle passage lowers the temperature and forms a heat insulating layer, allowing it to pass quasi-incombustibility tests (surface tests, box tests) and fireproof structure tests.It is also lightweight, has high heat insulation properties, and is highly productive, all while reducing costs. This relates to a siding board (hereinafter simply referred to as a board) that can be used. This kind of board, which has been conventionally used, has a surface material made of a thin metal plate formed into a concave shape, with male and female joints formed on the left and right side walls, and the surface is filled with polyurethane foam, polyisocyanurate foam, phenol foam, etc. The structure is such that the exposed surface is covered with a backing material made of a sheet-like material. However, this type of board is subject to semi-flammability test (JIS-
Although it passed the surface test in A-1321), it had a drawback that it could not pass the box test and fire protection test (JIS-A-1301 wooden base grade 2). it is,
Flashover occurred in the box test, and the backside temperature exceeded 260°C in the fire protection test. In particular, the biggest weaknesses in the box tests were the ejection of flammable gas from the joints, and in the fire protection tests, the temperature rise on the back side of the joints. In order to eliminate these drawbacks, the present invention ensures that the surface materials are in contact with each other at the joints of the boards, suppresses gas ejection from the joints, and reduces the absolute amount of plastic foam and prevents the appearance of decorative surfaces. In addition, the backing material is made of a fire-retardant material, and by forming a heat insulating layer by forming ventilation channels on the board and air cycle passages, it has passed quasi-nonflammability tests and fire prevention tests. It suggests boards that can pass the test. An embodiment of the board according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing an example of the above-mentioned board, and 1 is a surface material such as a thin metal plate, such as a surface-treated steel plate, a stainless steel plate, a galvanized steel plate, an aluminum plate, or a galvanized steel plate.
Consisting of one type of copper plate, PVC steel plate, fluorine-treated steel plate, enameled steel plate, and damping steel plate, 15 is plastic foam (hereinafter simply referred to as foam), 8b
is a hollow part, 10b is a blocking groove, 16 is a back material, 17
is the notch. To explain further, the surface material 1 has a main body formed with a concave cross-section, as shown in FIG. 5 and male and female connecting parts 6 and 9 formed at the lower ends of the side walls 3 and 4, and are mainly used for fireproof materials, decorative materials,
It functions as a reinforcing material, a shape material, a noncombustible material, a fireproofing material, an air cycle passage forming material, and a heat insulating layer forming material. That is, the decorative surface 2 is a flat plate, an embossed pattern,
It has a surface structure with chips attached. In addition, the male connecting portion 6 includes an insertion edge 7 extending outward from the lower end of the side wall 3, a reinforcing piece 8 whose tip is folded inward and extended to the inside of the side wall 3, and a reinforcing piece 8 whose tip is further extended inward. A hollow part 8b is formed from the partition piece 8a that is raised up to the back surface of the decorative surface 2, and as shown in FIG. In addition to preventing ejection to the second side, it also functions as a reinforcement for the connecting structure and fireproof structure, and as a mold material during foam formation. In particular, the hollow portion 8b functions as reinforcement, foam reduction, formation of a heat insulating layer, and air cycle passage. Further, the female connecting portion 9 has an upper side 1 that is bent inward from the lower end of the side wall 4.
0c and a lower side 10d, which is formed by bending the lower end of the upper side 10c outward, into a U-shaped insertion groove 10.
, an extension part 12 whose lower edge 11 protrudes outward, a tongue piece 13 whose tip is bent outward, and the extension part 12
It consists of a protrusion 14 formed in parallel with the side wall 4 in the middle. Especially the upper side 10 of the insertion groove 10
c is formed with a step portion 10e that is bent outward in an L-shape in the middle, and the engagement groove 10a extends from the entrance of the insertion groove 10 to the step portion 10e, and the portion from the step portion 10e to the end of the insertion groove 10. The cut-off groove 10b extends to the back. That is, the insertion groove 10 is divided into an engagement groove 10a and a blocking groove 10b by the stepped portion 10e, and has a two-stage structure to effectively achieve reinforcement and heat insulation. Further, as shown in FIG. 3, insert the insertion edge 7 into the insertion groove 10 and insert the board A.
When they are connected, the tip of the insertion edge 7 is fitted and inserted only into the engagement groove 10a, so the blocking groove 1
A void α is formed in 0b to block rainwater and the like from entering the interior due to capillary action, thereby improving the waterproofness of the joint B. Furthermore, insertion groove 1
0. The dimensions of the tongue pieces 13 and the protrusions 14 are determined based on the connection between the boards A, the spacing between the joints B, fire prevention, and waterproofing. The dimensions of the surface material 1 are, for example, W ₁ the width of the decorative surface 2, W ₂ the width of the insertion edge 7, W ₃ the width of the reinforcing piece 8, and the width of the reinforcing piece 8 extending inward from the side wall 3. W ₄ is the width from the side wall 4 to the tongue piece 13.
W ₅ , the width of the insertion groove 10 is W ₆ , the width of the engagement groove 10a is
W ₇ , the width of the blocking groove 10b is W ₈ , the width from the deepest part of the insertion groove 10 to the tongue piece 13 is W ₉ , the height of the side wall 3 is h ₁ ,
The height of the side wall 4 is h ₂ , the height of the engaging groove 10a is h ₃ , the height of the blocking groove 10b is h ₄ , the height of the tongue piece 13 and the protrusion 14 is h ₅ , h ₆ , and the surface material 1 When the plate thickness of is t,
W ₁ = 180 to 450 mm, W ₂ ≧ W ₅ , W ₃ ≒ W ₅ + W ₇ , W ₅
=Δt+w ₁₀ , or W ₅ ≒W ₄ , or W ₄ +Δt, W ₆
= W ₇ + W ₈ , W ₇ > W ₈ , W ₉ = W ₆ + W ₅ , W ₇ ≒ W ₂ ,
h ₁ = h ₂ , h ₂ + h ₃ = h ₁ + h ₃ , h ₄ , h ₅ = 1~3mm, h ₃
≒h ₄ or h ₃ > h ₄ . Note that Δt is board A
The joint spacing between them, W ₁₀ , is the width between the side surface of the form 15 and the side wall 3 . In addition, Form 15 is fire retardant,
Materials with heat insulating and adhesive properties, such as polyisocyanurate foam, phenol foam, silicone foam, modified polyurethane foam, and one type of these, such as long and short glass fibers, silicone, perlite, mica, asbestos, carbon fiber, borax, etc. The above is added, and the core part 15a filled in the space of the main body part 5 , the reinforcing piece, and the extension part 1
It is integrally constructed with a bulging portion 15b that bulges out toward the back side than 2. Note that the bulging portion 15b
are separated for convenience, and are actually a single entity. The thickness of the form 15 is H ₁ at the thickest part, H 2 is the thickness from the front surface to the back surface of the reinforcing piece 8, and H ₂ is the thickness from the back surface of the decorative surface 2 to the lower edge.
H ₃ , the thickness from the back side of the extension part 12 to the back side
H ₄ , the width from the side wall 3 to the side wall of the notch 17 is W ₁₀ , H ₁ = H ₃ + H ₄ , H ₂ = H ₁ − _{h 2} ,
_H2 > _H4 , _W10 = _W3 - _W2 . The backing material 16 covers the exposed surface of the foam 15 and mainly functions as a mold release material, a molding material, a fireproofing material, a waterproofing material, a heat shielding material, and an impermeable material for preventing gas leakage. Specific examples include asbestos paper, glass fiber sheets, vinyl chloride sheets, metal foils (Al,
It consists of one or more types of Fe, Cu), and a sheet-like material to which a net-like material, waterproofing treatment, and fireproofing treatment are added. Next, an example will be explained. Surface material 1 is a 0.27mm color steel plate, W ₁ = 360mm,
W ₂ = 20mm, W ₃ = 34mm, W ₄ ≒ 14mm, W ₅ = 20mm,
W ₆ = 23mm, W ₇ = 13mm, W ₉ = 42~50mm, W = 9
mm, h ₁ = 8 mm, h ₂ = 7 mm, h ₃ = 3.5 mm, h ₄ = 2 mm,
h ₅ = 2mm, h ₆ = 2.5mm, H ₁ = 25mm for form 15,
H ₂ = 15 mm, H ₃ = 10 mm, H ₄ ≒ 12 mm, and polyisocyanurate foam (density 50 Kg/cm ³ ), manufactured by Nippon Polyurethane Co., Ltd., was discharged and molded as a raw material onto the surface material 1 , and the back material 16 was 20 on asbestos paper
It is laminated with micron aluminum foil. Also, the width of the joint B between the boards A is Δt
is 7mm. In addition, as a comparative example, in the surface material 1 , except for removing the reinforcing piece 8, the second
It consists of a board with the same dimensions as shown in the figure. Therefore, we conducted surface tests, box tests, and fire protection tests on both boards, and the following results were obtained. [Table] What has been described above is only one embodiment of the board according to the present invention, and the board can be formed as shown in FIGS. 4 a to 5 f and 5 a to c. In addition, in Fig. 4, 18 is a caulking material, and in Fig. 5, 19 is a caulking material.
is a sheet-like material. As described above, according to the board according to the present invention,
The hollow part formed in the male joint part functions as an air cycle passage for the foam's combustible gas and decomposed gas in the event of a fire, and prevents the combustible gas and decomposed gas from flowing from the joint area. It has a feature that prevents it from spewing out to the sides. A stepped part is provided in the insertion groove to divide it into an engagement groove and a blocking groove, and when the insertion edge is inserted into the insertion groove to connect the boards, the tip of the insertion edge is engaged. Since it is fitted and inserted only into the groove, a void is formed within the isolation groove, which blocks rainwater etc. from entering the interior due to capillary action, improving the waterproofness of the joint area. . Boards using the foam have the characteristics of being able to pass quasi-inflammability tests, box tests, and fire protection tests. Manufacturing is almost the same as before, the form is either a single item or something close to it, and it has the characteristics of being able to be produced in large quantities. Although the insulation, strength, and corrosion resistance are greatly improved compared to the previous model, there is no cost increase.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the siding board according to the present invention, Fig. 2 is a perspective view showing the surface material which is the main part, Fig. 3 is an explanatory view showing the connected state of the board, Fig. 4 5A to 5F are cross-sectional views showing other examples of the surface material, and FIGS. 5A to 5C are explanatory views showing other examples of the siding board. 1 ... Surface material, 2... Decorative surface, 3... Side wall, 4
... Side wall, 5 ... Main body part, 6 ... Male connecting part, 7
... Insertion edge, 8 ... Reinforcement piece, 8a ... Partition piece,
8b...Hollow part, 9 ...Female connecting part, 10...Insertion groove, 10a...Engagement groove, 10b...Blocking groove, 1
0c...upper edge, 10d...lower edge, 11...lower edge,
12...extension part, 13...bottom piece, 14...projection,
15...Plastic foam, 15a...Core material part, 15b...Bulging part, 16...Back material, 17...
...Notch part, A...Siding board, B...
...Joint area.

Claims (1)

[Claims] 1 A main body portion 5 formed with a concave cross section from an elongated decorative surface 2 and side walls 3 and 4 whose both side edges parallel to the longitudinal direction of the decorative surface 2 are bent inward, and the side walls 3 and 4.
A surface material 1 consisting of male and female connecting portions 6 and 9 formed at the lower ends of both side walls of the surface material 1 , and a main body portion 5 of the surface material 1 ,
and a siding board A in which a plastic foam 15 is integrally filled by bulging from the female connecting portion 9 toward the back surface of the connecting portion 9 , and the exposed surface of the foam 15 is covered with a backing material 16 made of a sheet-like material. , the male connecting portion 6 includes an insertion edge 7 that projects outward from the lower end of the side wall 3, and a tip of the insertion edge 7 that is folded back inward to extend to the upper end of one side wall of the plastic foam 15. It is formed from a reinforcing piece 8 bent inward to form a hollow part 8b from the back surface of the decorative surface 2 and the side wall 3, and the female connecting part 9 is an upper side bent inward from the lower end of the other side wall of the main body. 10c and a lower side 10d with the lower end of the upper side 10c bent outward to form an insertion groove 10 into which the male connecting portion 6 formed in a U-shape is inserted, and the lower end of the insertion groove 10 is bent outward. It is formed of an extension part 12 that projects horizontally, a protrusion 14 that projects in parallel with the side wall 4 in the middle, and a tongue piece 13 that is bent outward at the tip of the extension part 12, and the back material 16 is fireproof. Furthermore, the upper side 1 of the insertion groove 10
0c is formed with a step portion 10e bent outward in an L-shape in the middle of the upper side 10c, an engagement groove 10a extends from the entrance of the insertion groove 10 to the step portion 10e, and an engagement groove 10a extends from the entrance of the insertion groove 10 to the insertion groove 10e. The cut-off groove 10b extends to the deepest part of the
Then, the siding board is characterized in that the insertion edge 7 of the male connecting portion 6 is fitted only into the engaging groove 10a to connect the siding boards to each other.