JPS5940790B2 - Fireproof panel with wire mesh and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves arranging string-like foamable inorganic kneaded material in parallel on both the front and back sides of a wire mesh with a gap maintained between them, feeding this into a heating furnace, and disposing the above-mentioned inorganic kneaded material. A fireproof panel with wire mesh formed into an integral panel by sandwiching and fixing wire mesh while foaming uniformly and efficiently from both the front and back surfaces in a short time, and its manufacturing method. It is.

Conventionally, panels using this type of inorganic material often have foamed particles such as perlite mixed into plaster, cement, concrete, etc., but when the proportion of foamed particles mixed is increased, it becomes light and fire-resistant. It also improves housing and insulation, but
On the other hand, the strength of the panel itself was low, especially the impact resistance, bending strength, etc. were extremely low, making it unsuitable for practical use.

Panels that have improved these issues are made by mixing glass fibers, synthetic resin short fibers, etc. into the above composition.
There are also panels that aim to improve mechanical strength by adding a plastic emulsion to enhance the adhesion between the foam particles and other materials, or by doing a combination of these. However, the increase in the number of steps and materials led to an increase in cost, making it impossible to put it into practical use as a commercial product.

Furthermore, panels made of gypsum or cement have the disadvantage of requiring 24 hours or even several days of curing after molding. In order to eliminate such drawbacks, the present invention uses a wire mesh as a core material and a reinforcing material, and on the front and back surfaces of the wire mesh, foamable inorganic kneaded material formed into strings is arranged in parallel with a gap maintained, and sandwiched. This is heated in a furnace and foamed for a time of - to -, which was previously used, and the foamable inorganic kneaded material is brought into close contact with each other to form the sandwich structure plate without any gaps, and furthermore, the foamed material is formed. In addition to wire mesh as a reinforcing material, wire mesh fireproofing is made by forming stripes of high-density parts that correspond to the contours of the foamed inorganic mixture, making it strong, lightweight, and has excellent fire resistance and heat insulation properties. The present invention provides a panel and a method for manufacturing the same.

Next, a wire mesh fireproof panel according to the present invention and a method for manufacturing the same will be explained in detail with reference to the drawings.

FIG. 1 is an explanatory view showing the structure of the material of the fireproof panel according to the present invention before heating, so-called unfoamed T. Reference numeral 1 denotes a wire mesh that serves as the core material and reinforcing material of the fireproof panel. As the material, one or six commercially available materials such as iron, copper, brass, etc. are used. 2 and 3 are string-like foamed inorganic kneaded materials (Icho,
(simply referred to as kneaded material), the front and back surfaces of wire mesh 1, so-called wire mesh 1, are sandwiched with kneaded material 2 formed in a linear shape, and a large number of kneaded material 2 are arranged with appropriate gaps maintained. It is.

Further, the gap between the kneaded materials 2 is determined by the density and strength required when the kneaded materials 2 are heated. To explain further, the kneaded material 2 is an alkali silicate such as sodium silicate,
(1) Alkaline alum solution such as potash alum, (2) Slaked lime, (3) Alkaline boric acid solution such as sodium borate, (4
) Silicone resin, (5) One or more of the above (1) to (5) aluminum metaphosphate are added and kneaded, and silicate powder such as pearlite, white carbon, silica flour, etc. is added to this kneaded product. It is a rice cake-like product obtained by adding one or more types and an appropriate amount of water and kneading it until it becomes homogeneous.
Form this into a suitable string shape and make it at 400 to 100 "C, 1
When heated for 0 to 15 minutes, it expands and becomes an inorganic foam with excellent fire resistance and high surface hardness.
FIG. 2 is a partially cutaway perspective view of a fireproof panel according to the present invention manufactured as a result of heating the material configured as shown in FIG. In the figure, 1 is wire mesh, 2
', 3' are inorganic foams that are foamed by heating the kneaded materials 2, 3, and each of the inorganic foams 2', 3' is welded to each other and has a structure that is fixed as one body. It is.
To explain further, the inorganic foams 2' and 3' are the kneaded material 2.
The contour of the kneaded materials 2 is approximately multiplied by multiple times, and the boundary portions of each kneaded material 2 have a higher density than the others and are in close contact with each other during foaming. In addition, the relationship between the inorganic foams 2 and 3 and the wire mesh 1 is such that the inorganic foams 2 and 3 are sandwiched into the mesh of the wire mesh 1 and sandwiched, and the whole is viewed as one piece. Top surface of inorganic foam 2', 3';
The back surface is molded into a flat surface. Next, a method for manufacturing a fireproof panel according to the present invention will be explained. FIG. 3 is a schematic diagram of an embodiment showing this manufacturing process.

In the figure, reference numeral 4 indicates a roll around which the wire mesh 1 is wound, and reference numerals 5 and 6 indicate hoppers for storing raw materials before forming the kneaded products 2 and 3. An appropriate number of nozzles 8 are arranged in parallel at the ends of the hoppers 5 and 6 for discharging the raw material in the form of small-diameter strings.
Therefore, the raw materials for the kneaded material ζ, 3 placed in the hoppers 5, 6 are pressurized and extruded from the nozzle 8 to form a large number of string-like materials, which extend from the wire mesh roll 4 and pass through the wire mesh 1 as the core. The paper is guided onto the conveyor 9 with its front and back sides narrowed in a sandwich-like shape. Thereafter, at the other end of the conveyor 9, the kneaded materials 2 and 3 placed on the front and back surfaces were passed through the gap between the pressure rolls 10 and immersed in the holes of the wire mesh 1 to be integrated. Make it a Sanderutsch structure. This integrated sandwich structure is then immediately fed to a heating furnace 11 through which it is passed continuously for 40 minutes.
Heating is performed at 0-1000°C for 10-15 minutes.

During this time, the kneaded materials 2 and 3 of the Sanderutsch structure expand and become a panel that integrates all the constituent materials. At the same time, the front and back surfaces of the panel form a hard and compressed film. What has been described above is only one embodiment of the fireproof panel with wire mesh and its manufacturing method according to the present invention, and as shown in FIG. It is also possible to manufacture a fireproof panel in which wire meshes 1 are arranged in multiple layers as shown in FIG. 5, or a fireproof panel in which the wire meshes 1 are arranged in multiple layers as shown in FIG.

As described above, in the fireproof panel with wire mesh according to the present invention, the wire mesh as a core material and the inorganic foam are tightly contacted, and the contact area between the inorganic foams 2 and 3 is integrated with high density. Because of its structure, it has high mechanical strength, especially excellent impact resistance and bending resistance, and is made of 100% inorganic material.
%, it is fire resistant and has extremely high heat insulation properties.

In addition, in the method for producing the above-mentioned fire-resistant panels, the above-mentioned materials are simply kneaded at room temperature to form a kneaded product, which is then supplied together with the wire mesh in a continuous process, so that the above-mentioned fire-resistant panels are continuously produced. The process is extremely simple, and the surface of the sandwich structure, which is full of voids, can be
Since each kneaded material is foamed simultaneously by heating from the back side, the heating time can be shortened to 1--, which is cheaper than before.
It also has the characteristic of being able to be produced in large quantities.

In addition, the fireproof panel with wire mesh is made by bonding together the inorganic foams made by foaming the kneaded material 2 to form an integrated sanderch board. It has the characteristic of being a fireproof panel. Furthermore, since the front and back surfaces of the wire-mesh fireproof panel have a higher density than the inside, a high-strength wire-mesh fireproof panel can be manufactured easily.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a state before heating of a fireproof panel according to the present invention, Fig. 2 is a perspective view showing an embodiment of a fireproof panel with wire mesh according to the present invention 1, and Fig. 3 is a perspective view showing a state before heating of a fireproof panel according to the present invention. A schematic diagram showing the manufacturing process of a fireproof panel with wire mesh, FIG. 4 is a perspective view showing a state before heating of a fireproof panel with wire mesh according to another example, and FIG. It is a sectional view showing other examples of a fireproof panel with laminated wire mesh. 1... Wire mesh, 2, 3... Foamable inorganic kneaded material, 2, 3... Inorganic foam after heating and foaming, 4... Wire mesh roll , 5, 6... Hopper, 8... Nozzle, 10... Pressure roll, 12... Expansion pressure roll.

Claims (1)

[Scope of Claims] 1. A fireproof panel with a wire mesh, characterized in that a wire mesh is integrally interposed in the center of an inorganic foam board, and a large number of lines due to density differences are formed on the foam board. 2. On the conveyor, a large number of string-like foamable inorganic kneaded materials extruded from a nozzle are fed in parallel with a certain gap maintained, a wire mesh is placed on top of the foamable inorganic kneaded materials, and the above-mentioned The same foamable inorganic kneaded material is laminated in the same manner as above,
Next, both kneaded materials are pressurized from the front and back to form a net-like sandwich plate, and then this sandwich plate is heated from the front and back sides in a heating furnace to foam the foamable inorganic kneaded material and form an integral piece. and a method for manufacturing a fireproof panel with wire mesh, characterized in that the contour parts of the foamable inorganic kneaded materials arranged in parallel are formed in such a way that they are in close contact with each other and have a higher density than other parts.