JPH0725383Y2 - Thin stone board construction board - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a building board in which a thin stone plate is attached as a surface layer material to one side surface of the board.

[Prior art and its problems]

Conventionally, when trying to use stone materials as wall surfaces, floor surfaces, and other decorative buildings, the construction requires skill, special tools and materials are required, and the weight of the stone materials themselves is heavy. The workability is reduced and the construction period is extended, which is costly.

For example, in this type of floor, the construction site where stones are to be spread is first dug down, then a mixture of cement, ballast, and sand is spread horizontally, and the cement and water are mixed from above. A common method is to pour the compound into the entire surface and spread it over a stone material of the required shape.

Therefore, in order to reduce the weight and facilitate the construction, for example, the natural stone panel panel described in JP-A-64-90355 is proposed. This proposal is for a natural stone plate panel for adhering a natural stone plate of the same size as the upper surface of the base material to form a wall surface, floor surface, etc., and at least one side of the base material has an edge of the upper surface of the base material. A convex portion that projects outward from the edge line and whose lower surface is flush with the lower surface of the base material is extended, and the opposite side surface on which the convex portion extends is cut inward from the edge line. The concave portion is provided, and the convex portion and the concave portion are fitted to each other to be continuously assembled.

That is, in the natural stone panel panel according to this proposal,
The stone material, which is a surface material, is lined with a wood-based material.

However, there is a significant difference in the coefficient of thermal expansion between the wood-based base material and the stone material that is the surface layer material, and the dimensional change of the wood-based material that occurs over time eventually causes the stone material that is the surface layer material. Which results in cracking of the stone surface.

In addition, the expansion movement of the wood-based material causes a decrease in the adhesive force between the wood-based material and the surface stone plate, causing delamination between the wood-based substrate and the surface stone plate, and It is easily damaged by the load.

Further, the difference in expansion motion due to the difference in expansion coefficient between the wood-based base material and the surface stone plate is particularly noticeable in the surface shape after the construction, and is considered to be uneven with the surface of the individual stone plates constituting the surface. However, the surface smoothness of the whole was lost.

[Means to solve the problem and its action]

The present invention adopts the following structure in order to prevent cracks from being generated on the surface of a stone material in a building board using a natural stone board such as an upper part. That is, in a building board in which a thin stone plate 2 is adhered to one side surface of a substrate as a surface layer material, as the substrate 1, a veneer laminated material 1 obtained by laminating a plurality of veneers in the same fiber direction is used. A buffer layer 3 is provided on the side surface of the substrate opposite to the side surface to which the thin stone plate 2 is attached, and the thickness of the veneer laminate 1 is at least 1.5 to 5 times the thickness of the surface thin stone plate 2. It is doubled.

The construction board of the present invention is a construction board obtained by adopting the above-mentioned constitution, without causing cracks in the thin stone plate 2 of the surface layer material and being easy to construct.

[Description of configuration]

 The configuration of the present invention will be described below.

The present invention is a thin stone plate-attached construction board in which a thin stone plate is attached to one side surface of a veneer laminated material and a buffer layer is provided on the other side surface, and the details thereof will be described.

A thin stone plate 2 is attached to one side surface of the veneer laminate 1 using an adhesive.

The veneer laminated material is formed by laminating and laminating laminated veneers having a thickness of 1.0 to 2.0 mm with an adhesive so that the fiber directions thereof are all the same.

As described above, the veneer laminated material 1 has a large strength in the fiber direction because the constituent veneers are laminated in the same fiber direction, but the strength in the direction orthogonal to the fiber direction is high. Is weak and flexible in that direction.

For this reason, unlike conventional plywood and fiberboard, there is no rigidity in both length and width, and there is a margin to allow the impact from the upper thin stone plate to escape in the direction orthogonal to the fiber direction, that is, the flexible direction. .

The thickness of the veneer laminated material 1 is 1.5 to 5 times the thickness of the thin stone plate 2 attached to the upper part.

If the thickness of the veneer laminated material 1 is less than 1.5 times the thickness of the thin stone plate 2 attached to the upper portion, the veneer laminated material 1 cannot follow the expansion motion of the thin stone plate 2 and the thin stone plate 2 2 Cracks, warpage, etc. occur on the surface.

If the thickness of the veneer laminated material 1 is 5 times or more than the thickness of the thin stone plate stuck on the upper part, the thin stone plate 2 cannot follow the expansion motion of the veneer laminated material in sequence, and as a result, Cracks, warps and delamination occur on the surface of the stone plate 2.

Further, the impact on the surface of the thin stone plate 2 cannot pass through the veneer laminated material 1 and reach the buffer layer 3 below the veneer laminated material 1, and the veneer laminated material 1 functions as a restraint material. And
The surface thin stone plate 2 is given rigidity, and the thin stone plate 2 is weakened.

As the thin stone plate 2, natural marble, natural granite, another natural stone material, or artificial marble, artificial granite, or another artificial stone material can be used.

The thickness of the thin stone plate 2 is 5 mm, considering both strength and weight.
It is preferable to use one having a size of about −20 mm.

Urethane resin, epoxy resin, vinyl acetate resin, synthetic rubber resin, silicone resin, etc. are preferable as the adhesive used to bond the veneer laminate 1 and the thin stone plate 2. The surface is coated with a spatula, a spray, a roll coater, or the like.

As shown in FIG. 1 and FIG. 2, male and female nuts 4 and 5 are provided on the peripheral end face of the single plate laminated material 1, and the length 1 of the male and female nuts 4 is the same as the upward convex portion 5u of the female and nut 5. Let's leave it. Then, on the veneer laminated material 1, the two adjacent sides of the thin stone plate 2 are aligned with the two side edges where the females 5 of the veneer laminated material 1 are formed. The sides are attached by retreating by the same size on both sides from the two side edges where the male seeds 4 of the single plate laminated material 1 are formed.

That is, the building board thus obtained, at the time of construction,
Above the mating parts of male and female 4 and 5 of adjacent building boards, between the thin stone plates 2 attached to the surface, retreat from the edge forming the male of each building board. As a result, a gap S ₁ is produced as shown in FIGS.

The space S ₁ is filled with a cement-based filler 6 to protect the surface design and the end face of the thin stone plate 2 at the time of finishing. In FIG. 3, 7 is a plywood base and 8 is joists.

Moreover, it is preferable that the length of the female bottom projection 5d is formed to be slightly shorter than that of the top projection 5u, if necessary.

In such a case, a gap S ₂ is formed between the female actual lower convex portion 5d and the male actual lower concave portion 4d. As a result, it is possible to prevent the occurrence of unreasonable contact load due to the expansion of the adjacent single-plate laminated materials 1, and thus it is possible to maintain a smooth surface property even after the elapse of construction.

The buffer layer 3 is attached to the side surface of the single plate laminated material 1 opposite to the side surface to which the thin stone plate 2 is attached.

As the buffer layer 3, synthetic resin foam such as polystyrene, polyvinyl chloride, polypropylene, and polyurethane, synthetic rubber, foam synthetic rubber, or the like is used.

The buffer layer 3 is adhered to the side surface of the single plate laminated material having flexibility in the fiber direction and the direction opposite to the side surface to which the thin stone plate 2 is adhered, and is fixed to the construction surface. Therefore, the veneer laminated material 1
It does not serve as a constraint body that imparts rigidity to the thin stone plate 3, and the impact from the thin stone plate 2 is absorbed and dispersed by the soft direction and the buffer layer of the veneer laminated material 1, and the local thin stone plate 2 is localized. Surface cracks due to strong impact are completely prevented.

(Example) Veneer laminated material 1 obtained by laminating 10 veneers with a thickness of 1 mm in parallel
Of the four sides, the male seed 4 is engraved on the adjacent two sides and the female seed 5 is engraved on the remaining two adjacent sides.

The length of male and female is 5 mm and the depth of female and female is 6 mm. The length of the lower protrusion of the female seed is 4 mm.

On this single veneer laminate 1, natural marble with a thickness of 6 mm is arranged so that the two adjacent sides are aligned with the edges of the two sides of the veneer laminate 1 on which the fruit is formed. The two sides of both sides of the single plate laminated material 1 are attached by using urethane resin adhesive while retreating from both side edges of the two sides where the male seeds 4 are formed, by the same dimension.

On the side opposite to the natural marble sticking surface of veneer laminate,
As the buffer layer, a synthetic rubber formed in a plate shape having a thickness of 3 mm is attached.

Water-based vinyl or urethane is used as the adhesive.

[Action effect]

a. On the lower surface of the thin stone plate 2, a veneer laminated material 1 having a thickness 1.5 to 5 times that of the thin stone plate 2 and a fiber direction of the single plate is the same direction, and a buffer layer 3 in a lower layer are provided. The local impact applied to the stone plate 2 escapes in a direction having flexibility which is orthogonal to the fiber direction of the veneer laminate 1.

b. Since the thickness of the veneer laminate 1 is set to 1.5 to 5 times that of the thin stone plate 2, when the both expand, the difference in elongation is offset by the thickness of the veneer laminate 1.

Further, the impact on the thin stone plate 2 is not only absorbed and dispersed in the direction orthogonal to the fiber direction of the veneer laminated material 1, but also the cushioning material 3
Therefore, it is completely absorbed and dispersed.

In this way, cracks and defects in the thin stone plate 2 can be prevented.

c. Lightweight and highly aesthetically pleasing as a thin stone laminated building board.

d. Since the buffer layer 3 is provided, it can be directly attached.

e. By filling the gap S ₁ with the filler 6, the joint portion of the thin stone plate 1 can maintain smoothness.

[Brief description of drawings]

Fig. 1: Plan view of the building board of the present invention, Fig. 2: Joining explanatory diagram of veneer laminated material, Fig. 3: Sectional view when the same filling material is used, 1: Veneer laminated material 2: Thin Stone board 3: Buffer layer 4: Male seed 4d: Lower recessed portion 5: Female seed 5u: Upper raised portion 5d: Lower raised portion 6: Filling 7: Plywood base 8: Joist S ₁ : Gap S ₂ : Gap

Claims (2)

[Scope of utility model registration request] 1. A construction board in which a thin stone plate 2 is adhered to one side surface of a substrate as a surface layer material, and as the substrate, a single plate laminated material obtained by laminating a plurality of veneers in the same fiber direction. 1, the buffer layer 3 is provided on the side surface of the substrate opposite to the side surface to which the thin stone plate 2 is adhered, and the thickness of the veneer laminate 1 is at least the thickness of the surface thin stone plate 2. A thin stone plate-attached construction board characterized by being 1.5 to 5 times larger. 2. A male seed 4 and a female seed 5 facing each other are provided on the peripheral edge surface of the substrate, and the thin stone plate 2 has two adjacent sides on the substrate.
The two solid sides of the thin stone plate 2 are aligned with the two edges of the board on which the female seeds 5 are formed, and the male seeds 4 of the board are formed on the other two sides.
The thin stone board-attached building board according to claim 1, wherein both sides are set back by an equal distance from the side edge.