JPH11117453A - Construction board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide excellent moisture-proof performance by molding a layered product using an aluminum layer as a core layer and laminated with a paper layer to one face and a synthetic resin film to the other face, sticking the layered product to at least one face of a wooden substrate, and sticking a heat insulating material to the surface. SOLUTION: A paper layer 2, an aluminum layer 3, and a synthetic resin film layer 4 are laminated in sequence to mold a layered product S, and the paper layer 2 of the layered product S is stuck to one face of a wooden substrate 1. Since the paper layer 2 is stuck to the wooden substrate 1, an adhesive infiltrates into the paper layer 2 from the wooden substrate 1 side of the paper layer 2 and reaches an infiltration portion of the adhesive inside the paper layer 2 or a resin fused from a synthetic resin sheet when the aluminum layer 3 and the paper layer 2 are stuck together, and excellent adhesive strength is obtained. A plate-like heat insulating material 5 made of a synthetic resin foam body such as foam polyethylene is stuck to the surface of the synthetic resin film 5 of the layered product S, thereby moisture-proof and airtight performance and heat insulating performance can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structural panel which can be used for structural panels, wall materials, floor materials, fittings or furniture.

[0002]

2. Description of the Related Art Conventionally, architectural boards using wood-based boards have been used for various applications, but shrink and expand the boards with the absorption and release of moisture, resulting in walls using the resulting architectural boards.
In floors, fittings, etc., this is a factor that causes distortion such as warpage or bending.

[0003] In a house, where there is no air flow, and where there is a local stagnation with high humidity, such as in a bathroom or a kitchen near a wall of water, or under a floor, heat insulation or wood-based board material may be used. Corrosion easily occurs in building materials. Further, in a place where the dry state continues for a long time, the wood-based member contracts and a gap is generated at the joint, and air movement (draft wind) is actively performed from an unplanned portion, thereby lowering the efficiency of cooling and heating. And so on.

[0004] In order to solve such a problem, a moisture-proof material such as a moisture-proof sheet in which paper is laminated on the front and back of the moisture-proof material is adhered to the surface of the wooden board to prevent the penetration of moisture. A board was proposed.

[0005] However, although these moisture proof materials can suppress the permeation of liquid water, they cannot prevent the permeation of water vapor dispersed in gas, and the water vapor gradually increases over a long period of time. Infiltration or the release of moisture in the building board has resulted in problems such as shrinkage, expansion and corrosion of the building board.

In order to solve such a problem, indoor air and moisture are arbitrarily removed from the back of the wall for the purpose of saving energy required for cooling and heating and providing a comfortable living space.
The floor, ceiling,
A highly airtight and highly heat-insulated construction method has been implemented in which a moisture-proof airtight sheet is attached to all of the wall surfaces, and ventilation is systematically performed for 24 hours with airtight performance.

[0007]

However, in the highly airtight and highly heat-insulated construction method, the installation of the moisture-proof and airtight sheet is performed on all the floors, ceilings, and outsides of the walls constituting the room, and the installation is complicated and time-consuming. However, there is a problem that the moisture-proof airtight sheet is easily damaged during construction, and the airtight performance is deteriorated if a scratch or a hole is made in any one place.

[0008] In order to solve the construction trouble, a substitute for a building board in which a moisture-proof airtight sheet is adhered to the surface of a wooden substrate has been studied. However, a polyethylene film having a thickness of 100 µm or more, which is generally accepted as a moisture-proof airtight sheet, has been studied. And 20
0μm thickness or more moisture barrier quality vinyl chloride film has, i.e. in order to provide water vapor permeability 7g / m 2 ^· 24hr or less equivalent moisture barrier properties are required to stack the polyethylene layer of the moisture-proof airtight sheet equivalent thickness It is expensive to stably form such a layer on the surface of a wooden substrate, and the formed layer itself is weak in strength, and easily damaged during transportation and construction as a building board. There was a problem that it was easy.

[0009]

Means for Solving the Problems In order to solve the above problems, the present inventor has conducted extensive studies for the purpose of providing a building board suitable for industrial production and having excellent moisture-proof performance. Have reached the present invention.

That is, according to the present invention, a laminate S in which an aluminum layer 3 is used as a core layer, a paper layer 2 is laminated on one side thereof, and a synthetic resin film layer 4 is laminated on the other side is provided on at least one side of the wooden substrate 1. This is a building board in which the layer 2 is attached so as to be in contact with the wooden substrate 1 and the heat insulating material S is attached to the surface of the synthetic resin film layer 4.

[0011]

According to the architectural board of the present invention, the paper layer of the laminated body, which is laminated and integrated in the order of the paper layer, the aluminum layer, and the synthetic resin film layer, is adhered to the wooden substrate to provide a high airtightness. -It is possible to provide a building plate having a moisture-proof performance equal to or higher than that of the moisture-proof airtight sheet used in the high heat insulation method, and also having excellent heat-insulating performance.

[0012]

FIG. 1 shows an example of a sectional view of a building board according to the present invention. FIG. 1 shows a paper S of a laminated body S laminated in the order of a paper layer 2, an aluminum layer 3 and a synthetic resin film layer 4. The building board in a state where the layer 2 is laminated so as to be attached to one surface of the wooden substrate 1 is shown.

As the wooden substrate 1 constituting the architectural plate of the present invention, for example, a plywood, a wood chip board, a wood fiber board, a single laminated board, or a combination of any combination thereof can be used. Also, the laminate S is provided only on one side of the wooden substrate 1.
When sticking, an optional decorative layer can be formed on the opposite surface of the wooden substrate 1 depending on the use.

This decorative layer is made of natural veneer, artificial veneer, and nonwoven fabric, paper, veneer sheet lined with synthetic resin sheet, or decorative paper, resin-impregnated paper, nonwoven fabric, paper, synthetic veneer obtained by cutting natural wood. A decorative sheet such as a resin sheet,
It is formed by bonding using an adhesive, or by directly painting or printing on the surface of the wooden substrate.

[0015] An overcoat layer may be provided on the surface of the decorative layer. By providing such a decorative layer,
Water is prevented from penetrating from the surface side, and problems such as warpage, dew condensation, and corrosion due to a change in humidity can be solved.

As the paper layer 2 of the laminate S to be attached to the wooden substrate 1, kraft paper, tissue paper, recycled paper, or the like can be used. Since the paper layer 2 is disposed, the anchor effect of the paper layer 2 and the adhesive easily penetrate into the paper layer 2.
It is possible to sufficiently secure the adhesive strength when the laminate S is attached to the wooden substrate 1.

Further, as the synthetic resin film layer 4, a synthetic resin film such as polyester, polystyrene, polycarbonate, hard vinyl chloride, polypropylene, and polyethylene dephthalate can be used. The synthetic resin film having a thickness of 10 μm or more can be used.

Preferably, those having a thickness of 10 to 30 μm are used. If the thickness of the synthetic resin film is less than 10 μm, sufficient moisture-proof performance cannot be obtained even when an aluminum layer is deposited. Further, even if a layer having a thickness of more than 30 μm is used, the same moisture-proof performance as that obtained by depositing an aluminum layer can be obtained, and the cost is simply increased, which is not preferable.

In the present invention, a laminate of the synthetic resin film layer 4 and the aluminum layer 3 is used. As the aluminum layer 3, an aluminum foil or a material obtained by vapor-depositing aluminum on one surface of a synthetic resin film layer 4 can be used. When an aluminum foil is used, one having a thickness of 10 μm or more is used.

On the other hand, in the case of aluminum vapor deposition, since the aluminum layer and the synthetic resin film exhibit a composite moisture-proof performance, the same moisture-proof performance as an aluminum foil of 10 μm can be exhibited with a vapor deposition amount of 400 °.

For this reason, aluminum deposition is preferred. Aluminum deposition is, for example, 10 ⁻⁴ mmHg
By heating aluminum to a temperature above its melting point under a moderately high vacuum, the aluminum is vaporized and scattered. By exposing the cooled synthetic resin film to the vapor, the aluminum vapor adheres to the surface of the synthetic resin film and solidifies with molecular fine particles.

With such a method, a very thin aluminum coating can be applied to the surface of the synthetic resin film layer 4. Synthetic resin film layer 4 in the present invention
The thickness of the aluminum layer 3 deposited on the substrate is 400 to 8 mm.
Preferably, it is formed to a thickness of 00 °.

With a layer thinner than 400 °, the moisture-proof performance required in a highly airtight and highly heat-insulated construction method cannot be sufficiently exhibited. Even if the aluminum layer 3 is formed thicker than 800 °, the moisture-proof performance is not further improved.

Among the synthetic resin film layers 4, polyethylene terephthalate, in particular, has a water vapor transmission rate of 40 g / m ² 24 hours for a sheet having a thickness of 12 μm by itself.
As described above, water vapor can be easily passed, but vapor deposition of aluminum can significantly reduce the water vapor transmission rate.

That is, in the state of the single sheet, the polyethylene terephthalate sheet has a lower water vapor transmission rate than that of the polyethylene terephthalate resin sheet. Lower. For this reason, a sheet that is thinner than other resins can exhibit sufficient moisture-proof performance, which is particularly preferable.

The laminate S is formed by attaching the aluminum layer 3 deposited on the synthetic resin film layer 4 and the paper layer 2 to each other. The paper layer 2 is bonded by heat fusion with a synthetic resin sheet such as polyethylene, vinyl chloride, or polypropylene interposed therebetween, or is bonded by using an adhesive. (Not shown)

As an example of sticking by heat fusion, a polyethylene sheet is laminated on the paper layer 2, a synthetic resin film layer 4 on which aluminum is deposited is further laminated, and the whole is heated and pressed to form a polyethylene sheet. It can be fused and attached.

The heating temperature at the time of thermocompression bonding must be lower than the melting temperature of the synthetic resin film layer 4. This is because, if the synthetic resin film layer 4 is melted by the heat and pressure bonding, the moisture-proof performance improved by the aluminum deposition is reduced.

For this reason, the aluminum layer 3 is heat-sealed.
It is preferable to select a synthetic resin sheet that is lower than the melting temperature of the synthetic resin film layer 4 as a synthetic resin sheet used for attaching the synthetic resin film layer 4 to the paper layer 2.

As described above, when the polyethylene resin is adhered by heat fusion, the polyethylene resin is adhered to the middle of the paper layer 2 in a state where the polyethylene resin has penetrated and hardened. In the case of sticking using an adhesive, the sticking can be performed using a urea resin-based, phenol resin-based, melamine resin-based, vinyl acetate resin-based, or vinyl urethane resin-based adhesive. The laminated body S bonded by either method also has the adhesive used for the bonding or the resin in which the synthetic resin sheet is melted on the side of the paper layer 2 to be bonded to the aluminum layer 3 inside the paper layer 2. It has a permeated part that has permeated up to.

Further, the architectural plate of the present invention comprises the laminate S
Is attached to the wooden substrate 1, and the attachment of both is performed via an adhesive. As the adhesive used at this time, the same adhesive as that used for attaching the paper layer 2 and the aluminum layer 3 of the laminate S can be used.

By bonding the paper layer 2 to the wooden substrate 1 in this manner, the adhesive penetrates into the paper layer 2 from the wooden substrate 1 side of the paper layer 2, and the aluminum layer 3 and the paper layer 2 are bonded. When the adhesive or the synthetic resin sheet formed inside the paper layer reaches the permeation portion of the melted resin, the paper layer 2 does not have a single layer remaining in the paper layer 2 so that the peel strength of the paper layer 2 is reduced. Will be very good.

Further, as the heat insulating material 5 of the present invention, a plate made of a synthetic resin foam such as foamed polyethylene, foamed polystyrene, foamed urethane or the like can be used. still,
It is preferable to impart flame retardancy by mixing a synthetic resin with a flame retardant, or by using a fluorine-based organic material as a foaming agent for a synthetic resin foam.

The heat insulating material 5 is a synthetic resin film 4 of the laminate S.
Affixed to the surface. The attachment of both is performed via an adhesive. As the adhesive used at this time, urea resin, phenol resin, melamine resin, vinyl acetate resin,
A vinyl urethane resin-based adhesive can be used.

FIG. 1 shows a state in which a wooden substrate 1 on which a laminate S is adhered and a heat insulating material 5 having the same dimensions are adhered. When used as a material, a nailing portion for fixing the building plate to the column material, or a fitting portion for forming a notch in the column material and fitting therewith is required. Therefore, the size of the heat insulating material 5 is smaller than the size of the wood substrate 1 and the size of the laminate S, and the wood substrate 1 protruding from the heat insulating material 5 on the periphery of the building board is used.
It is preferable that the laminate S portion be a nailing portion or a fitting portion.

Further, as shown in FIG. 2, a paper layer 5 can be further adhered to the surface of the synthetic resin film layer 4 constituting the laminate S. By forming the paper layer 5, in bonding to the heat insulating material 5, the adhesive penetrates into the paper layer 6, so that excellent adhesive strength can be secured.

The paper layer 5 can be attached by heat-sealing a synthetic resin sheet or by using an adhesive in the same manner as attaching the aluminum layer 3 and the paper layer 2. Furthermore, when the laminate S is stuck on both sides of the wooden substrate 1, it is possible to prevent the synthetic resin film layer and the aluminum layer from being damaged when the building board of the present invention is transported and constructed.

Further, as shown in FIG. 3, the laminate S can be attached not only on one side of the wooden substrate 1 but also on both sides.
In this manner, by adhering the laminate S to both sides of the wooden substrate 1, it is possible to completely block the movement of air and the movement of moisture from both the front and back sides of the building board. Further, by adhering the laminate S to both sides of the wooden substrate as well as the four corners of the wood, the movement of moisture from any direction can be completely blocked.

FIG. 4 shows another embodiment of the present invention, in which a waterproof sheet A is adhered to the surface opposite to the side on which the laminate S is adhered. Examples of the waterproof sheet A include synthetic resin sheets such as polyethylene, vinyl chloride, polypropylene, and polyurethane; metal sheets such as aluminum and copper; bituminous sheets such as asphalt felt and roofing; polyurethane foam;
A foam sheet such as polystyrene foam or foam rubber, or a rubber sheet is used as the waterproof layer A1, and kraft paper, tissue paper, recycled paper, or the like is used as the paper layers A2 and A3 laminated on the front and back sides.

These three layers are laminated with paper layers A2 and A3 on the front and back of the waterproof layer A1, and are bonded by heat sealing or using an adhesive. As the adhesive used at this time, urea resin, phenol resin, melamine resin, vinyl acetate resin, vinyl urethane resin and the like are used.

The waterproof sheet obtained by any of the methods has a portion in which the adhesive used for bonding to the waterproof layer or the resin in which the waterproof layer itself has melted has penetrated into the inside of the paper layer adhered to the front and back of the waterproof layer. Things.

By adhering the waterproof sheet A in this manner, liquid water is prevented from permeating on the side to which the waterproof sheet A is adhered, but gaseous water vapor is allowed to permeate. As a result, the building plate of the present invention absorbs or releases water vapor in response to a change in humidity in a portion where one surface is in contact or in a room, thereby exhibiting a function of suppressing a rapid change in humidity.

[0043]

According to the architectural plate of the present invention, the surface on which the laminate S is adhered has the same moisture-proof and air-tight performance as that of attaching the moisture-proof and air-tight sheet in the high air-tightness and high heat insulation method, When used as a structural panel with a high airtightness and high heat insulation method, one panel is provided with a sealing material or airtight tape at a fitting portion or a joining portion with the frame material of the panel, so that one panel has moisture-proof airtightness and heat insulating performance. It becomes what has.

In forming the wall surface, floor base surface and ceiling surface with the architectural plate of the present invention, airtight tape or synthetic resin foam filling or the like may be used only between the architectural plates or only at the fixed portion with the structural material. By performing the moisture proof and airtight treatment, the airtight performance can be ensured, and the construction period can be significantly shortened. Further, even when used for applications other than structural panels, they are not affected by gaseous water vapor at all, and do not basically contract or expand. Therefore, they are particularly suitable for use in places with high humidity.

[Brief description of the drawings]

FIG. 1 is an example of a sectional view of a building plate,

FIG. 2 is a cross-sectional view when a paper layer 5 is adhered to the surface of a synthetic resin film layer 4 of a laminate S,

FIG. 3 is a cross-sectional view when the laminate S is attached to both surfaces of the wooden substrate 1,

FIG. 4 is a cross-sectional view when a waterproof sheet A is attached to a surface opposite to the side to which the laminate S is attached,

[Explanation of symbols]

1: wood substrate, 2: paper layer, 3: aluminum layer, 4: synthetic resin film layer, 5: heat insulating material, S: laminate.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B32B 15/12 B32B 15/12 15/20 15/20 21/06 21/06 C23C 14/14 C23C 14/14 B E04B 5 / 02 E04B 5/02 E E04C 2/26 E04C 2/26 TV E04B 5/02 2/50 B

Claims (3)

[Claims] At least one surface of a wooden substrate is a laminate in which an aluminum layer is used as a core layer, a paper layer is laminated on one surface thereof, and a synthetic resin film layer is laminated on the other surface, such that the paper layer is in contact with the wooden substrate. An architectural plate that is attached and has a heat insulating material attached to the surface of the synthetic resin film layer. 2. The building board according to claim 1, wherein the aluminum layer is provided on one side of the synthetic resin film layer by vapor deposition. 3. The architectural board according to claim 1, wherein a part of the synthetic resin is adhered to the paper layer by thermal fusion of the synthetic resin layer.