JPS6136354Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a construction panel made of chip-shaped hard polyurethane. This invention relates to an architectural panel in which the foam is tightly integrated without creating a cavity.

There are various shapes of construction materials mainly made of metal, which consist of a base frame part and a pair of connecting parts, to which similar parts can be successively connected. It is widely used for walls, walls, etc. Since roofs, walls, etc. require heat insulation, some kind of heat insulating material is often attached to the inner surface of such building materials.

In general, this type of insulation material includes gypsum board, foamed polystyrene board, etc., but especially today, rigid polyurethane foam board is used because of its excellent insulation properties.

However, rigid polyurethane foam boards have a rectangular cross-section made by cutting a large block of foam into a specified size, whereas the above-mentioned construction materials are usually made by cutting a single thin steel plate with a sizing roll. It is bent appropriately, and its cross section has a complicated shape, especially due to the pair of connecting parts.
There are very few cases where it is at least rectangular. Therefore, when a rigid polyurethane foam board is attached to such a building material, a cavity is formed between the two, and condensation occurs in this cavity, which is disadvantageous.

On the other hand, when molding a rigid polyurethane foam board used for various purposes as a heat insulating material, it goes through various processes including the foaming process mentioned above. Waste materials such as cut wood and broken wood are generated. However, although such waste material essentially has the excellent heat insulating properties of hard polyurethane foam, unlike similar waste material of soft polyurethane foam, it has not yet been effectively utilized. If such waste materials, which are extremely stable synthetic resin bodies with a low density, are disposed of by landfilling, incineration, etc., there is a risk of causing a major pollution problem.

In view of the above-mentioned circumstances, the present invention provides a construction panel that eliminates the above-mentioned drawbacks.The purpose of the present invention is to provide a construction panel that eliminates the above-mentioned drawbacks. By creating a tightly integrated architectural panel without creating a cavity, on the one hand, it prevents condensation, and on the other hand, it saves resources by recycling and effectively using waste materials, which also causes pollution problems. There is a point where you should not be afraid.

Therefore, the present invention provides: (a) a construction material consisting of a base frame part and a pair of connection parts, to which similar parts can be successively connected; At the bottom is a chip-shaped rigid polyurethane foam that is tightly integrated without creating any cavities by reaction hardening through heat compression.

Hereinafter, the configuration of the present invention will be explained in detail based on the drawings while comparing it with a conventional one.

A construction material consisting of a base frame part and a pair of connecting parts, to which similar parts can be successively connected, is shown in Fig. 1, which is a perspective view as an example, and Fig. 2, which is a sectional view as another example. There are various shapes as shown in the figure. Each of these consists of base frame parts 1, 2 and a pair of connecting parts 3, 4, 5, 6, for example, a first
In the case of the construction material shown in the figure, the connection part 3 on the insertion side can be connected to the connection part 4 on the reception side of another construction material of the same type.

The conventional relationship in which a heat insulating material with a substantially rectangular cross section is attached to such a building material whose cross section has a complicated shape due to a pair of connecting parts is shown in FIG. 3, which is a cross-sectional view. Alternatively, as shown in FIG. 4, cavities 10 and 11 are formed between the building material 7 and the heat insulating materials 8 and 9, and dew condensation occurs there.

On the other hand, in the construction panel according to the present invention, as shown in FIG. 5, which is a cross-sectional view of an embodiment thereof, chip-shaped hard polyurethane foam is added to the construction material 7 in the presence of an appropriate reaction aid. The lower part 12 which is reacted and hardened by thermal compression is tightly integrated without creating a cavity.

Furthermore, the architectural panel of the present invention, although not shown, can also be made by reacting and hardening chip-shaped rigid polyurethane foam in the same manner with the above-mentioned building material, and then tightly integrating it with the facing material covering the exposed surface side without creating any cavities.

Since the building material 7 is heat-compressed using chip-shaped hard polyurethane foam, these are packed into every corner of the building material 7 without leaking, so no cavities are formed. If it is integrated, it will function as an interior material as it is, making it extremely convenient to use.

Next, regarding the method of manufacturing a construction panel according to the present invention, a case in which face materials are integrated will be explained based on FIG. 6, which is a sectional view showing the state.

First, waste hard polyurethane foam is crushed or cut into chips. In this case, the rigid polyurethane foam includes not only a simple rigid polyurethane foam but also those with glass fibers interposed therein and similar rigid polyisocyanurates. And the degree of crushing or cutting is
In order to provide good heat insulation and strength, it is recommended that the diameter be 20 mm or less, including powdered materials.

Next, a binder as one of the reaction aids is applied and mixed onto the chips. As the binder, used is MDi or crude MDI, or a diluted solution of a prepolymer obtained by reacting polyols with an excess amount of isocyanate. In this case, the amount of the binder applied is preferably about 7 parts by weight or more per 10 parts by weight of the powder.

Then, the construction material 7 is placed on the lower mold 13 of the mold, a chip-like material coated and mixed with a binder is put therein, and the facing material 14 is placed above it. At this time, a catalyst or adhesive as one of the reaction aids is applied to the inner surface of the building material 7 in advance, and further,
Apply a catalyst or adhesive from above the chip-like material that is thrown in, or apply a catalyst or adhesive to the side of the face material 14 that will come into contact with the chip-like material.A suitable catalyst may be used as the catalyst. A tertiary amine is used, and as the adhesive, a general commercially available aqueous emulsion type adhesive such as vinyl acetate adhesive or acrylic adhesive is used, but all of them are used in a diluted state with water. In addition, as surface materials, metals, wood,
Cloth or paper, or even those laminated with polyethylene, can be used.

Finally, the upper mold 15 is closed and thermal compression is performed. In this case, the temperature should be 100℃ or higher and the time should be 2 minutes or more, and the chips placed in the mold should be thermally compressed to about 1/2 to 1/10 the size of the building material. It can be adjusted according to the desired physical properties such as thermal insulation properties and strength.

Thus, it consists of a base frame part and a pair of connecting parts,
For building materials that can be connected one after the other of the same type, chip-shaped hard polyurethane foam is reacted and cured by heat compression in the presence of an appropriate reaction aid to tightly integrate them without creating cavities. A desired architectural panel can be obtained.

As explained above, the present invention has the following effects.

(1) Since the chip-shaped hard polyurethane foam is tightly integrated with the building material without creating any cavities, there is no condensation and it functions well as a framework material.

(2) Since it uses waste material of hard polyurethane foam, it saves resources by recycling and effectively using waste material, and there is no risk of causing pollution problems.

(3) It is convenient to use because the insulation material is integrated into the building material.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an example of conventional construction materials;
Figure 2 is a sectional view showing another example of conventional construction materials, Figures 3 and 4 are sectional views showing the relationship between conventional construction materials and insulation materials, and Figure 5 is an embodiment of the present invention. FIG. 6 is a cross-sectional view showing the construction panel according to the present invention being molded. 1, 2... Base frame part, 3, 4, 5, 6... Connection part, 7... Building material, 8, 9... Insulating material, 10,
11... Cavity part, 12... Chip-shaped hard polyurethane foam reacted and hardened, 13, 15
... Molding mold, 14 ... Surface material.

Claims (1)

[Scope of utility model registration request] For a construction material that consists of a base frame part and a pair of connecting parts, to which similar parts can be successively connected, chip-shaped rigid polyurethane foam is reaction-cured by heat compression in the presence of an appropriate reaction aid. Architectural panels that are tightly integrated without creating any cavities.