JPS6315480Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a siding board useful as an exterior wall material for architectural structures. Generally, the exterior walls of wooden houses are made of mortar or siding boards. And recently, it is lightweight,
In addition, exterior walls using siding boards made of synthetic resin foam as a core material have become common, reducing construction time and requiring no skill. However, the back side of conventional siding boards was flat, and the kraft paper was in direct contact with the base board or the rim, and the siding board had an airtight structure due to the elasticity of the core material. However, since the connecting portion lacks heat insulation, the difference in temperature between the inner and outer walls tends to cause dew condensation, which leads to corrosion of the rim. In other words, when the back of the siding board is in direct contact with the base board, there is no air circulation at all, and there is almost no change in humidity in this gap, with condensation only occurring due to temperature differences. become. This is the same condition where dew condensation occurs due to a change in only one of the two factors of humidity and temperature difference, and the condensation occurs more frequently than when there is a change in two factors. A dew condensation phenomenon occurs, resulting in the above-mentioned inconveniences. In addition, in manufacturing this type of siding board on a continuous line, the front and back materials move at the same speed, and the synthetic resin foam raw material is discharged onto this and moved while heating, pressurizing, and curing the product. That is. However, in the past, it has not been possible to prevent the occurrence of "misalignment" in the conveyance speed of the front and back materials, resulting in a roughened back surface appearance and a decrease in commercial value. Furthermore, when forming a synthetic resin foam, the vaporized freon gas does not contribute to foaming and remains between the sheet material and the synthetic resin foam layer without being discharged to the outside, which may affect the decorativeness of the back side of the siding board and the synthetic resin foam. It has the disadvantage that voids form in the foam structure and have an adverse effect on the foam structure.

The present invention proposes a siding board that eliminates these drawbacks, has excellent resistance to condensation, and is easily manufactured without compromising the quality of the back surface.

The siding 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 siding board. Reference numeral 1 denotes a thin metal plate made of, for example, a surface-treated steel plate, a stainless steel plate, a copper plate, etc., and formed by pressing, rolling, etc. as shown in the figure. That is, a recessed portion 1b consisting of a decorative surface 1a and side walls 2 and 3, a male connecting portion 5 consisting of an insertion edge 4, an engaging groove 6 formed by bending the edge of the side wall 3 inward, an extension portion 7, and the like. It is composed of a female type connecting part 10 including a protrusion 8 protruding in the middle and a tongue piece 9 whose end edge is bent upward. Reference numeral 11 is a synthetic resin foam (hereinafter simply referred to as foam) that is filled in the recess 1b by in-situ foaming, and for example, one of polyisocyanurate foam, polyurethane foam, phenol foam, etc. is used. This form 11 includes a core material, a cushion material,
Acts as an insulator and adhesive. Reference numeral 12 denotes a sheet-like material, for example, a laminated material of one or more of kraft paper, asbestos paper, metal foil, asphalt felt, terfelt, and synthetic resin sheet, which covers the back surface of the foam 11 and Due to its self-adhesive properties, it can be formed in one piece. Reference numeral 13 denotes a plurality of protrusions, which are formed by forming a part of the sheet-like material 12 into a plurality of protrusions parallel to the width direction of the decorative surface 1a at appropriate intervals. Helps prevent "shift" due to speed differences. More specifically, as shown in cross section in FIG. 2, it protrudes Δt from the back surface 11a of the form 11, its width W is small, and its length L is smaller than or equal to the recess 1b. Further, the interval P corresponds to the furrow interval or is an integer fraction thereof. For example, Δt=5 mm, W=10 mm, and P=450 mm.

Next, to explain the manufacturing method of the siding board according to the present invention, as shown in Fig. 1, a 0.27 mm colored iron plate is continuously formed as a thin metal plate and fed onto a line. After mixing raw materials for the polyisocyanurate foam 11, the material is conveyed on a line while being continuously discharged into the recesses 1 and b. Further, the sheet-like material 12 is continuously laminated on the discharged raw material, fed into a mold, gradually foamed and cured in the mold, and sent out from the outlet as a siding board. At this time, the edges of the upper and lower mold members A and B are each formed into a curved surface (R shape) as shown in FIG. In particular, the mold of the surface with which the sheet-like material 12 comes into contact is essential for forming the projections 13 during manufacturing. In this manufacturing process, the form 11 is placed in the recess 16 of the collar iron plate 1.
The sheet-like material 12 is pushed between the curved surfaces of the upper mold member A by the foaming pressure and volume expansion at that time, forming the ridges 13 shown in FIG. and prevent the siding board from shifting. Note that this protrusion 13 functions as an escape area for the gas that is chased by the surfaces of the sheet-like material 12 and the foam 11 among the gas generated during foaming of the foam raw material, and prevents this kind of gas from inhibiting foaming of the foam 11. It also has the effect of suppressing negative effects.

What has been described above is only one embodiment of the siding board according to the present invention, and the siding board can also be formed as shown in FIG. 4. That is, FIG. 4 shows a siding board in which a form 11 is provided in addition to the recess 16 so as to protrude from the recess 16, and a protrusion 13 is provided on the back surface thereof. Although not shown further. It is also possible to use a sheet-like material on which the protrusions 13 are formed from the beginning, or a sheet-like material reinforced with wire mesh or fibers.

As mentioned above, according to the siding board according to the present invention, since a flow path is formed between the base board, the rim and the siding board, the occurrence of dew condensation is extremely reduced compared to before, and the siding board is It has the characteristic of eliminating corrosion. In addition, the appearance of the back surface of the siding board is not a randomly raised surface due to gas as in the past, but it functions as an escape area for gas chased by the surface of sheet-like materials and foam, and this type of gas against foam It has the characteristic of suppressing the negative effect on foaming inhibition and increasing the product value. Furthermore, since the back surface of the siding board is intentionally formed into an uneven shape, its cushioning properties absorb the unevenness of the underlying surface, resulting in a beautiful finished wall. In addition, during manufacturing, the sheet-like material is pushed between the curved surfaces of the upper mold member due to the foaming pressure and volume expansion of the foam raw material discharged between the front and back materials (thin metal plate and sheet-like material). Since the misalignment between the mold member and the siding board, the so-called difference in moving speed, is regulated, this device has an economical and economical feature that greatly reduces the occurrence of defective products.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a siding board according to the present invention, Fig. 2 is a vertical cross-sectional view thereof, Fig. 3 is an explanatory diagram showing a part of the state inside the mold during manufacture, and Fig. 4 is another embodiment. It is an explanatory diagram showing an example. DESCRIPTION OF SYMBOLS 1... Metal thin plate, 1b... Recessed part, 11... Foam, 12... Sheet-like object, 13... Protrusion.

Claims (1)

[Scope of utility model registration request] A thin metal plate in which a recess is formed from a rectangular decorative surface and side walls with both sides thereof bent inward, and a male connecting part is formed on one edge of the recess and a female connecting part is formed on the other edge. and a siding board consisting of a synthetic resin foam filled in the recess and a sheet-like material affixed to the back surface of the foam, in which the sheet-like material is made to protrude at appropriate intervals parallel to the width direction of the decorative surface. Additionally, a siding board characterized in that a synthetic resin foam is protruded in correspondence with the protrusion.