JPH042645A - Inorganic fiber plate - Google Patents

Abstract

PURPOSE:To obtain inorganic fiber plates having excellent fire resistance, heat insulating properties, sound absorbing qualities, by molding a material to be molded comprising inorganic fibers mixed with an adhesive into inorganic fiber plates having projected parts and dented parts, respectively on a plane part in a proper set density and laminating the inorganic fiber plates. CONSTITUTION:A material to be molded comprising inorganic fibers blended with an adhesive is molded and projected parts 2 are made on a plane part in a proper set density to form an inorganic fiber plate 1. The material to be molded comprising the inorganic fibers mixed with an adhesive is molded and dented parts 4 are made on the plane part to form the inorganic fiber plate 1. The projected parts 2 of the inorganic fiber plate 1 having the projected parts 2 are engaged with the dented parts 4 of the inorganic fiber plate 1 having the dented parts 4 and the opposing plane parts are bonded to laminate plural inorganic fiber plates.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an inorganic fiberboard that is used as an auxiliary material for construction that has excellent heat resistance, fire resistance, heat insulation properties, and sound absorption properties.

[Technical background]

Mainly used as an auxiliary material for construction, with insulation and sound absorption properties)
Expected materials include inorganic fibers such as glass wool and rock wool.

Generally speaking, the above-mentioned inorganic fiber used as an auxiliary material for construction is generally used as an aggregate of the above-mentioned fibers as is, but those with low density have low rigidity.
Overall, products with high density have insufficient rigidity for their weight, and in reality, products with low density are supported by other structural members with rigidity.

Therefore, it is often difficult for construction engineers to fully use these materials, and it can be said that they contain many elements that are avoided.

[Conventional technology]

In order to compensate for the lack of rigidity in conventional plate-shaped bodies made of inorganic fibers, attempts were made to strengthen the tensile strength of the outermost layer by pasting aluminum foil, cloth, paper, etc. on the surface of the completed inorganic fiberboard. technology is being implemented.

However, even with the above-mentioned means, the degree of improvement in the overall strength is very small, and the actual situation is that the desired increase in required strength cannot be achieved.

The basic manufacturing method for inorganic fiberboard, which is the material board, is to add an adhesive to the inorganic fibers of the material, pressurize the material, and heat-mold it. In general, the manufacturing method for plate-shaped bodies involves applying pressure to the material to be molded from the inside and outside using mold members, and hardening the material by force-feeding hot air that can pass from one outside surface to the other. .

Therefore, the applicant has developed a two-step construction method as a means for molding an inorganic fiber plate-like body, in which the surface layer material that will become the skin is molded and constructed in the previous step, and the surface layer material completed in the previous step is formed in the second step. On April 4, 1990, a patent application was filed for a technology in which the skin, or ``mold,'' is used as a substitute, and the uncured middle layer of the material to be molded is brought into contact with the pressurized and heated process.

[Disadvantages of conventional technology]

In the former technique mentioned above, in the composite board material in which sheets of other materials are pasted to the completed inorganic fiberboard, the adhered object is a very coarse and dense fiberboard because adhesive is used as the pasting means. Therefore, adhesive strength is generally weak,
In addition, if bending stress is applied to this portion, the sliding bending strength will rapidly decrease at that portion. Also, when looking at the manufacturing method for inorganic fiberboard, which is the object to be adhered, it is difficult to use a method in which a material to be molded, which is inorganic fibers with an adhesive added thereto, is pressed from the front and back, and hot air is forcefully passed through the material to harden it. As mentioned above,
In this curing process, thin or relatively low-density plates of various desired thicknesses and densities can be produced in a relatively short heating time, but thick or high-density In this case, the time required for the process is longer than the time proportional to the thinness of the product, and the workability is significantly deteriorated, and the degree to which a good uniform hardening effect can be expected in the thickness direction is low, and the overall hardening effect is not expected. As a result, the heat receiving effect often results in uneven production, such as an excessive effect on the wind receiving surface being observed on the surface.

Furthermore, in the clamping mold, the uncured material to be molded bulges outward due to the intake and exhaust holes drilled to promote the wind blowing effect, causing clogging of the intake and exhaust holes and slowing down the curing process. This leads to low efficiency, such as temporarily stopping the process and restarting the process after cleaning the suction and exhaust holes, as well as convex ridges on the surface of the cured product that follow the shape of the suction and exhaust holes. There were a number of non-flavorful points such as the formation of cracks and deterioration of the quality of the product.

[Problem to be solved by the invention]

The present invention, which aims to eliminate the disadvantages of the prior art described above, is particularly effective in the production of molded bodies of medium thickness or thicker, which was considered difficult in the prior art.

Originally, inorganic fibers were used as construction auxiliary materials, with hopes for fireproofing, heat insulation, soundproofing, etc., and there are no examples of their use as interstitial materials in walls, ceilings, floors, etc., where they are normally visible. However, from around the time when it became possible to manufacture plates using this inorganic fiber as a material, the scope of use began to expand from gap materials to some surface materials, and the use of these inorganic fibers expanded. Accordingly, various demands have arisen from consumers and the construction industry, such as thickness and density suitable for each use, that is, rigidity. As a result, when it comes to be used as a surface layer material, there is an inevitable tendency for a wide variety of demands to be made, including improvements in bending strength and sound absorption coefficient, as well as thickness, rigidity, density, etc.

Producers who must keep all of these varieties in stock at all times to meet demand must secure a wide variety of stocks and storage locations.

Further, in particular, "thick materials" have the above-mentioned production difficulties, and "thin materials" have low efficiency in sound absorption for transparent sound.

Based on these facts, this invention aims to enhance the sound absorption and insulation effect from the thinnest inorganic fiberboard, for example, a "thin material" of about 5.0" The main purpose is to provide an inorganic fiberboard that is made into a laminate, and as a means to enhance the sound absorption and insulation effect, the surface of the board is provided with concave and convex portions,
In addition to refracting straight-travel sound waves by the concave and convex portions to muffle or weaken them, the concave and convex portions are expected to have a male-female mating effect when laminating means is used to form a thick material. In addition, for bending strength, the tensile action of the outer corner,
The purpose is to expect the reinforcing effect of integration to prevent the peeling phenomenon peculiar to laminated materials due to the compression action of internal corners.

[Means to solve the problem]

As a means for achieving the above-mentioned object, the present invention is made by molding a molded material made of inorganic fibers and an adhesive to have a convex portion on one side at an appropriately set density.

Further, the convex portions protruding from one side are made into independent single shapes, and a plurality of these are formed to protrude and are molded.

Furthermore, it is formed by molding a protruding convex portion on one side into a strip shape.

Furthermore, the convex portion protruding on one side is formed by combining an independent single shape and a strip shape.

Furthermore, the molding density of the convex portion projected on one side and the protruding portion of the convex portion is lower than that of other portions.

Note that the molded material is made by adding an adhesive to inorganic fibers and is molded with an appropriately set density to form recesses in a flat surface.

Furthermore, recesses are provided in the flat parts of the front and back sides.

Still further, the recess provided in the plane portion can be fitted into the convex portion provided on the inorganic fiberboard.

Still further, an inorganic fiber board provided with a convex portion and an inorganic fiber board provided with a concave portion are fitted in their respective convex portions and concave portions, and their opposing flat portions are joined. It is made by laminating a plurality of inorganic fiberboards together.

[For production]

The present invention relates to a unit material for the purpose of composing an inorganic fiberboard, and the unit material has at least 2.0
This is a general term for plates having a thickness of about 100" to about 100".

The above-mentioned inorganic fiberboard is prepared by using inorganic fibers, that is, a material to be formed by adding an amount of adhesive to the main material such as glass wool, rock wool, or metal fiber, depending on the amount, that is, the density. The desired thickness and rigidity of the desired strength can be obtained by applying a pressure to the molded material and a heating process for hardening. Thin material refers to a material whose thickness is approximately 5.0', l or less, and if it is within this thickness range, the material to be molded with the required density for the set rigidity and strength is processed from both the front and back sides. pressure heating process,
In other words, the material can be formed by the pressure welding method using a heated mold, and the desired thickness and density can be produced within the range possible with the pressure and heat forming method, and this thin material can be obtained by the above method. Since the molding is performed depending on the "mold" used, arbitrary shapes such as high or low density and convex shapes can be freely adopted.

Among these, a molded body in which numerous protrusions are formed individually or in strips on one side of a thin material in order to increase the area, harmonize it, strengthen shearing force, increase the sound absorption effect, etc. That is.

In the thin material formed as described above, on the outer surface thereof, sheets different from the inorganic fibers constituting the thin material,
For example, it is also optional to attach interior materials such as metal foil, textile fabrics, thin plates made of synthetic resin, etc.

On the other hand, the medium-thickness material is molded from a material equivalent to the thin-thickness material made of inorganic fibers.

In order to facilitate the curing process for this medium-thickness material, in addition to the above-mentioned heating and pressure molding method, the manufacturing method for this medium-thickness material is to pressurize and harden the uncured material by passing through hot air. For this reason, molded plates with lower hardness and lower density are generally used than thin materials. Then, in these medium-thick materials, recesses corresponding to the above-mentioned convex portions are formed.For thin-thick materials, if the layer thickness is smaller than the depth dimension of the recess, recess formation is not possible. Since this is not possible, the recess is formed in a medium-thick material having a layer thickness larger than the depth of the recess to be formed.

Naturally, inorganic fiberboard is used as an auxiliary building material for fireproofing, heat insulation, sound absorption, etc., and does not necessarily require mechanical elements as a building material, but it is used as a ceiling material and wall material. Rigidity is also required when used as a knife, and in order to achieve the above-mentioned desired numerical value, large dimensions are more desirable than small dimensions in terms of thickness. , lightweight and high rigidity are advantageous.

The concavities and convexities provided on the surface of the inorganic fiberboard described above are not only provided in the thin material described above, but are provided in the board material of the desired thickness, and the recesses are formed depending on their depth. In this case, it should be recessed in a plate material having a thickness that allows recessing.

These concave and convex portions are a phenomenon in which, especially in the transmission action of sound waves, conditions such as diffuse reflection or refraction that impede the straightness of sound waves are combined to mute, absorb, or weaken the sound waves. It achieves the purpose of sound absorption and soundproofing by inhibiting the phenomenon of acoustic transmission.

Although this kind of effect exists in areas other than the above-mentioned concave and convex areas, it acts significantly higher in these concave and convex areas than in other areas, and furthermore, in the concave and convex areas, the stratification density in other areas is lowered. The effect can be further improved by making it different.

Furthermore, the effect of the concave and convex portions is not only the sound extinction effect described above, but also the fact that when trying to obtain a desired thickness dimension of the inorganic fiberboard, a plurality of board materials are joined by fitting the concave and convex portions. As a result, the bonding surface is increased and the refractive strength of the plate material formed as a laminate, especially the action to counter the refraction pressure generated within the layer due to the tensile action of the outer corner and the compression action of the inner corner, is strengthened by the uneven fitting, and the lamination is strengthened. This acts as a defense against the peeling phenomenon peculiar to boards.

As a means of joining these plurality of board materials, the joining surfaces may be joined by using an adhesive, or by interposing an uncured inorganic fiberboard material and heating it again.
This joining means is not particularly limited.

〔Example〕

Next, an embodiment of the present invention will be described with reference to the drawings. Figures 1 and 2 show a cross section of a finished product of an inorganic fiberboard (1) having a convex portion (2) on one side. , inorganic fibers, including glass wool and rock wool,
Inorganic fiberboard (1) is made by adding an adhesive to the main material, which may also include metal fibers, and curing it into a plate shape.
Figure 2 shows a cross section of the convex part (2) and the part where the convex part (2) protrudes is molded so that it becomes a lower density part (3) than other parts. Inorganic fiberboard (1)
FIG. 4 is a cross-sectional view with a plurality of recesses (4) provided on both sides, and FIG. 5 is a cross-sectional view with a convex portion (2) provided on both sides. An inorganic fiberboard (1) and an inorganic fiberboard (1) provided with a recess (4) are arranged so that the convex portion (1) and the convex portion (1) and the concavity (4) are tightly fitted into each other. Figure 6 is a cross-sectional view showing a laminated board that has been made into one version, and Fig. 6 shows an inorganic fiberboard (1) with concave portions (4) on both sides and an inorganic fiberboard (1) with convex portions (2) on both outer surfaces. (1) This shows a cross section of what was sandwiched in (1). The above-mentioned convex portion (2) has a height of about 2ζ, and a base of about 82 mm, and the cross section of the convex portion (2) is hemispherical or conical. , the chevron shape of a pyramid can be made into an independent or strip-like shape, and the planar shape can be made into a prism, round column, cross, star shape, or other unspecified protrusions, or a combination with the above-mentioned strips. These inorganic fiberboards (1), which are provided so as to protrude upwardly from the bonding surface, and which are entirely molded onto a thin plate as described above, are constructed as a molded body by compressing and heating the upper and lower surfaces using a "mold".

It is also optional to attach an interior material (5) different from the inorganic fibers of the inorganic fiberboard (1) to the outer surface of the inorganic fiberboard (1) as shown in the first figure.

〔Effect of the invention〕

As described above, this invention provides concave and convex portions on the surface of the inorganic fiberboard, so each of the inorganic fiberboards having concave and convex portions can be used as a single material. The bonding surface is provided with a recess that corresponds to the convex portion, and the uneven joining of these bonding surfaces increases the bonding area of each. In addition, each of the concave and convex portions has a large sound absorption effect, and also resists shearing force when bending load is applied during and after construction. This is effective and has the effect of increasing bending strength.

[Brief explanation of the drawing]

Figures 1 and 2 are cross-sectional views of an inorganic fiberboard, Figure 1 is a cross-sectional view of an inorganic fiberboard with convex portions, and Figure 2 is a cross-sectional view of an inorganic fiberboard with convex portions. Figure 3 is a cross-sectional view of an inorganic fiberboard with recesses on one side, and Figure 4 is a cross-sectional view of an inorganic fiberboard with recesses on both sides. , FIG. 5 is a sectional view of a two-layer inorganic fiberboard, and FIG. 6 is a sectional view of a three-layer inorganic fiberboard. (1)... Inorganic fiberboard, (2)... Convex portion, (3
)...Low density area, (4)...Concavity.

Claims (1)

[Claims] [1]. An inorganic fiberboard characterized in that it is formed by molding a molded material made of inorganic fibers with an adhesive to an appropriately set density to have convex portions on one side. [2]. The convex part protruding on one side has an independent shape,
The inorganic fiberboard according to claim 1, characterized in that the inorganic fiberboard is formed by forming a plurality of protrusions. [3]. The inorganic fiberboard according to claim 1, characterized in that the convex portion protruding on one side is molded into a strip shape. [4]. 2. The inorganic fiberboard according to claim 1, wherein the convex portion protruding on one side is formed by combining an independent shape and a strip shape. [5]. 2. The inorganic fiberboard according to claim 1, wherein the convex portions protruding on one side and the molding density of the protruding portions of the convex portions are lower than those of other portions. [6]. An inorganic fiberboard characterized in that it is formed by molding a material to be molded, which is inorganic fibers and an adhesive, with an appropriately set density to form recesses in a flat surface. [7]. 7. The inorganic fiberboard according to claim 6, wherein the inorganic fiberboard has recesses formed in the front and back plane parts. [8]. 8. The inorganic fiberboard according to claim 6, wherein the recess provided in the plane portion is adapted to fit into a convex portion provided on the inorganic fiberboard. [9]. An inorganic fiberboard with a convex portion and an inorganic fiberboard with a concave portion are connected to each other by fitting the convex portions and the concave portions, and joining the opposing flat portions to form a plurality of inorganic fiberboards. An inorganic fiberboard characterized by being formed by combining inorganic fiberboards into layers.