JPH0243944Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heat insulating corrugated board used for roofing materials, wall materials, and other construction materials.

This type of heat insulating corrugated board is made by fixing corrugated board material and a heat insulating layer made of synthetic resin foam, and has features such as superior rigidity compared to heat insulating boards that use flat board material instead of corrugated board material. Therefore, it is often used as roofing and wall materials that are required to have heat retention and soundproofing properties as well as a certain degree of rigidity.

Most of the known heat-insulating corrugated sheets have a corrugated sheet material glued to the entire surface of the heat-insulating layer, which has a wavy surface.According to this, because the bonding area between the heat-insulating layer and the corrugated sheet material is large, the two are firmly bonded. This eliminates the risk of the corrugated sheet material peeling off from the insulation layer, but on the other hand, it is necessary to completely close the spaces between the troughs of the corrugated sheet material with the synthetic resin foam that makes up the insulation layer. This is not preferable when attempting to reduce material costs. On the other hand, as shown in FIG.
There was also one in which a space 3 was formed between the corrugated sheet material 2 and the peak portion 22 of the corrugated sheet material 2. According to this, since there is no need to close the space 3 with the synthetic resin foam that is the material of the heat insulating layer 1, the material cost of the heat insulating layer 1 can be reduced, but on the other hand, Corrugated sheet material 2
Since the curved valley portion 21 of the curved trough 21 is only bonded within a very narrow range, the bonding area between the two is small, and there is therefore concern about the bonding strength, resulting in peeling of the corrugated sheet material 2 from the heat insulating layer 1, etc. There was a drawback that this was likely to occur.

This idea was made in view of the above circumstances.
Although it can ensure sufficient adhesive strength between the heat insulating layer and the corrugated sheet material, which is required when actually using the thermal insulation corrugated sheet as a roofing material or wall material as a building material,
It is an object of the present invention to provide a heat insulating layer whose material cost can be reduced compared to the above-mentioned known heat insulating corrugated plate.

That is, in the heat-insulating corrugated sheet according to the present invention, the troughs of the corrugated sheet are bonded to the recesses formed on the surface of the heat-insulating layer made of synthetic resin foam, and the spaces are formed between the heat-insulating layer and the peaks of the corrugated sheet. It is characterized by the fact that it is formed.

The present invention will be described below with reference to the illustrated embodiments.

In the heat insulating corrugated plate illustrated in Fig. 2, the heat insulating layer 1
U groove-shaped recesses 111 are formed at a plurality of locations on the surface 11 at predetermined intervals, and the troughs 21 of the corrugated sheet material 2 are fitted and adhered to these recesses 111. As shown in detail in FIG. 3, the inner curvature of the recessed part 111 and the curvature of the trough 21 are the same, and the entire surface of the part of the trough 21 fitted into the recessed part 111 is is glued to. Therefore, the bonding area between the valley portion 21 and the recessed portion 111 is larger than that in FIG. 1, and a bonding strength that is satisfactory in actual use can be obtained. Regarding this point, as shown in FIG. 4, the inner surface curvature of the recessed portion 111 may be formed larger than the curvature of the valley portion 21, and the two may be bonded together. If this is done, the bonding area between the heat insulating layer 1 and the corrugated sheet material 2 will be smaller than that in Figure 3, and the bonding strength between the two will be slightly inferior, but this bonding strength can be used as a building material. As long as the corrugated sheet material does not cause any inconvenience such as peeling during actual use, it has the following advantages. That is, the heat insulating corrugated sheet is often obtained by bonding the heat insulating layer 1 and the corrugated sheet material 2, which have been separately manufactured in advance, using an adhesive. It is rare that the mutual spacing between the corrugated sheet material 2 and the mutual spacing between the troughs 21 of the corrugated sheet material 2 exactly match each other, but rather there is usually some difference between these mutual spacings. In that case, if the inner curvature of the recessed part 111 is made larger than the curvature of the valley part 21 as described above, the discrepancy in the mutual spacing described above can be easily absorbed, and therefore the valley part 21 can be formed as a recessed part. 111 has an advantage in that it can be bonded while maintaining a predetermined bonding area.

Next, as shown in FIGS. 2, 3, and 4, a space 3 is formed between the heat insulating layer 1 and the peak portion 22 of the corrugated sheet material 2. This space 3 exhibits a heat insulating effect due to the action of the air layer existing inside the heat insulating corrugated plate during actual use. Its insulation effect does not decrease compared to that of a heat-insulating corrugated sheet. Note that it will be more effective if the ends of this heat-insulating corrugated plate are closed. Therefore, the material cost of the heat insulating layer 1 is reduced by an amount corresponding to the volume of the space 3 compared to the above-mentioned known heat insulating corrugated plate without reducing the heat insulating effect.

Note that the above-mentioned heat insulating layer is made of synthetic resin foam such as polyurethane foam or polystyrene foam. Further, the corrugated sheet material may be a continuous extrusion molded product of synthetic resin such as polyvinyl chloride or polycarbonate, or may be a thin metal sheet.

In the heat insulating corrugated plates explained with reference to FIGS. 2 to 4, the surface 11 of the heat insulating layer 1 is
Although the explanation has been made on the case where the grooves are flat except for the groove 11, it goes without saying that the grooves 111 may have a bulge shape that smoothly continues to the recessed portion 111 as shown in FIG.
In addition, in FIG. 5, the same parts as those shown in FIGS. 2 to 4 are given the same reference numerals, and their explanations are omitted.

As is clear from the above explanation, in the heat-insulating corrugated sheet according to the present invention, the troughs of the corrugated sheet material are bonded to the recesses formed on the surface of the heat-insulating layer, so it is easy to maintain adhesive strength that does not cause any inconvenience in practical use. Obtainable. Further, since a space is formed between the heat insulating layer and the peak, there is no need for a synthetic resin foam to fill this space, thereby reducing the material cost of the heat insulating layer. In addition, in the heat-insulating corrugated board of the present invention, acrylic resin is coated on the surface of the corrugated board material to increase weather resistance, and a synthetic resin film is pasted on the back side of the heat-insulating layer to prevent pests from entering. This is especially useful when actually used as a roofing material for livestock barns.

[Brief explanation of the drawing]

Fig. 1 is a partial sectional view showing a heat insulating corrugated plate as a comparative example, Fig. 2 is a partial perspective view of a heat insulating corrugated plate according to an embodiment of the present invention, and Fig. 3 is an enlarged view of the heat insulating corrugated plate in Fig. 2. A partial sectional view, FIG. 4 is a partial sectional view of a modified example,
FIG. 5 is a partial sectional view of another modification. 1... Heat insulation layer, 11... Surface of heat insulation layer, 111
... Recessed part, 2 ... Corrugated plate material, 21 ... Valley part, 22
...Yamabe.

Claims (1)

[Scope of utility model registration request] The troughs of the corrugated sheet material are bonded to the recesses formed on the surface of the heat insulating layer made of synthetic resin foam, and spaces are formed between the heat insulating layer and the peaks of the corrugated sheet material. Insulated corrugated board.