JPH07276555A - Decorative interior material - Google Patents

Abstract

PURPOSE:To eliminate various problems that have occurred in a prior art using only an inorganic plate as a substrate of a decorative interior material and to impart fire resistant properties. CONSTITUTION:In a decorative interior material 1, a decorative layer 3 is provided on a surface of a substrate 2. The substrate 2 consists of a flame retardant medium-duty fibrous plate 4 and an inorganic plate 5 bonded to the lower surface thereof. As the decorative layer 3, a wood-based decorative veneer coated with a urethane resin is used. As the inorganic plate 5, a fiber-containing slag cement plate is used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative interior material used for wall materials, ceiling materials and floor materials.

[0002]

2. Description of the Related Art Up to now, there has been known an interior decorative material in which a decorative material is adhered to the surface of an inorganic plate base material such as a calcium silicate plate, a slate plate, a fiber-containing slag cement plate and a gypsum board.

[0003]

Since the above inorganic plate base material is hard, it is not easy to perform cutting work such as grooving, and the blade is worn out so that production control is difficult, and dust generated during cutting work. Since it is an inorganic powder with a large specific gravity, it was difficult to collect dust and the working environment deteriorated.

[0004] A wood decorative veneer is attached to the surface of the base material, and when the interior decorative material is subjected to uneven processing such as grooving from the surface, the inorganic board of the base material is exposed and becomes unsightly. Quality could not be improved and products with high commercial value could not be obtained.

When the base material is a calcium asbestos silicate board, a slate board, a fiber-containing slag cement board, or the like, since these have an alkaline component, an interior with a wood decorative veneer adhered thereto is used. In the wood, after the production, the alkaline component of the inorganic board migrates to the surface due to moisture absorption and water absorption, so that the wood decorative veneer discolors to blue or black and the appearance of the interior decorative material is impaired. In order to prevent this, an epoxy resin layer or a urethane resin layer is provided on the surface of the inorganic plate, but when the amount of the synthetic resin applied is small,
Alkali components cannot be prevented from migrating and alkali contamination occurs. On the contrary, when the amount of application is large, there is a problem that the ordinary adhesive has poor adhesion to the wood decorative veneer. Moreover, since the wood-made decorative veneer on the surface is thin and the inorganic plate under the veneer has a poor moisture absorption / release property, dew condensation may occur on the surface of the decorative veneer to cause mold.

[0006] When the base material is gypsum board, if the wood decorative veneer is attached by the cold pressure method, the productivity is poor because the cold pressure time is long. Therefore, if a hot pressing method with a short pressing time is adopted, the wood decorative veneer and the adhesive contract due to the hot pressing. At this time, if the interlayer strength of the cardboard on the surface of the gypsum board is weak, delamination may occur. Also, as shown in FIG.
The gypsum board (40) is usually covered with thick paper (41) (42), but when the gypsum board (40) is cut or grooved, the thick paper (41) is cut between layers at the cut points. When peeled off, the wooden decorative veneer (44) is turned up above the delaminated portion (43), impairing the beauty of the decorative interior material. The same phenomenon occurs when the decorative interior material is grooved from the wood decorative veneer side. In addition, (45) in the figure shows the turned-up portion of the wooden decorative veneer (44).

When the base material is made of a slate plate, the slate plate is hard, so that it is difficult to form the joint portion such as actual processing, and since the joint portion is brittle, reinforcement such as resin impregnation is required. The formation was very troublesome.

An object of the present invention is to provide a decorative interior material that solves the above problems and is fireproof.

[0009]

The decorative interior material according to the present invention is a decorative interior material in which a decorative layer is provided on the surface of a base material, wherein the base material is a flame-retardant medium fiberboard and a lower surface thereof. It is composed of a bonded inorganic plate.

In the above decorative interior material, a moisture / water barrier layer is provided between the flame-retardant medium fiber board and the inorganic sheet, and on at least one of the upper surface of the flame-retardant medium fiber board and the lower surface of the inorganic sheet. Is desirable.

The flame-retardant medium-quality fiberboard can be obtained by coating the medium-quality fiberboard with a flame-retardant agent by a known method such as dipping, dipping or injection under reduced pressure. Further, the flame-retardant medium-quality fiberboard may also be formed by immersing the medium-quality fiberboard in a cation-containing aqueous solution and then immersing it in an aqueous solution such as ammonium phosphate or boric acid to form an insoluble inorganic substance inside the medium-fiberboard. In addition to that, after adhering the flame retardant and the above-mentioned insoluble inorganic substances to the surface of the wood fiber which is the raw material of the medium-quality fiberboard,
It can also be obtained by adding an adhesive and molding. Specific examples of the flame retardant include ammonium phosphate, boric acid,
Ammonium borate, ammonium polyphosphate, ammonium bromide, reaction product of ammonium polyphosphate with formaldehyde and dicyandiamide, guanylurea phosphate,
Sodium silicate, guanidine phosphate, amidophosphazene compound, phosphoric amide compound, guanidine sulfamate, carbamate phosphate compound, cation-containing aqueous solution containing calcium, barium, magnesium, zinc, etc., aqueous solution of ammonium phosphate, boric acid, etc. Can be raised.

Specific examples of the inorganic board include asbestos slate board, calcium silicate board, fiber-containing slag cement board,
Light-weight aerated concrete board, flexible board, pulp cement board, gypsum board, wood wool cement board, fiber-containing slag gypsum board, rock wool board, glass fiber board, perlite board, phenol resin-bonded glass fiber-containing aluminum hydroxide board, etc. Can be raised. In addition, it is preferable in terms of adhesion to apply a sealer agent made of urethane resin, epoxy resin or the like on the front and back surfaces of the inorganic plate. Examples of the material for forming the decorative layer include a coating layer, a pattern printing paper, a patterned vinyl chloride sheet, a wallpaper, and a wood decorative veneer. Of course, paper, non-woven fabric, cloth or the like may be attached to the back surface of the single plate.

As the material for forming the moisture / water barrier layer, a synthetic resin film or sheet of polyvinyl chloride, polyethylene, polypropylene or the like, and paper, non-woven fabric, cloth, inorganic paper or the like is adhered to both sides of the synthetic resin film or sheet. Alternatively, a heat-bonded three-layer sheet or a single plate may be used. In the case of the three-layer sheet, the two-sided sheets may not be of the same type, and may be of the same type or of different quality.

As the adhesive, known adhesives such as urea resin type, melamine resin type, phenol resin type, epoxy resin type, acrylic resin type and urethane resin type are used, and synthetic resin and fiber are used in the adhesive agent. If a water repellent material such as powder, beads, or glass fiber is mixed, the effect of suppressing moisture and water permeability of the adhesive itself is further improved.

The flame-retardant medium-quality fiberboard and the inorganic board may be adhered so that their peripheral end faces coincide with each other, or may be adhered while being displaced from each other in one of the two diagonal lines. It may be displaced in the width direction and bonded. When the two are displaced in this way, the horizontal protruding portion of the inorganic plate is used as a nailing portion and an adhesive applying portion. The four end surfaces or both end surfaces of the flame-retardant medium-quality fiberboard may be subjected to a known joining process such as a phase cut and a true fruit.

[0016]

The decorative interior material of the present invention in which a decorative layer is provided on the surface of the base material comprises a flame-retardant medium-quality fiberboard and an inorganic board adhered to the lower surface of the board. Since the flame-retardant medium fiber board is below the layer, when the grooved processing is applied from the surface of the decorative interior material, the blade reaches the problematic inorganic board, and the inorganic board contains alkaline components. Even if it is contained, since the flame-retardant medium fiber board is present between the inorganic board and the decorative layer, the transfer of the alkaline component to the decorative layer side is delayed. In addition, since the medium-quality fiberboard under the decorative layer is a wood-based material, it has better moisture absorption and release properties than the inorganic board, and when the decorative layer is a wooden decorative veneer and the inorganic board is a gypsum board, a decorative interior material. The wood-made decorative veneer does not turn up even if it is cut or grooved, and the flame-retardant medium-quality decorative veneer has a smooth surface, so that the makeup finish is also good. In plywood and veneer laminated materials, the backing of the surface veneer expands due to repeated absorption and desorption of moisture, which affects the decorative layer on the surface.
Although the decorative layer is cracked, the intermediate fiberboard is made of wood fibers which are almost uniform in its entirety. Therefore, the decorative layer is not cracked even if moisture absorption and desorption are repeated. In addition, the intermediate fiber board is much easier to process for joining on the end faces than the inorganic board. Since the medium fiberboard is flame-retardant and is on the upper surface of the inorganic board, it is fireproof.

In the above decorative interior material, a moisture / water barrier layer is further provided between at least one of the flame-retardant medium fiber board and the inorganic sheet, the upper surface of the flame-retardant medium fiber board and the lower surface of the inorganic sheet. If provided, even if the inorganic plate contains an alkaline component, this does not reach the decorative layer.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. Example 1 This example is shown in FIG. 1, in which the decorative interior material (1) has a base material (2) and a decorative layer (3) provided on the surface of the base material (2). The material (2) is composed of a flame-retardant medium fiber board (4) and an inorganic board (5) adhered to the lower surface thereof.

Example 2 This example is shown in FIG. 2. In the decorative interior material (6) of the figure, the base material (7) is a flame-retardant medium fiberboard (4).
The third embodiment is the same as the first embodiment except that it is composed of the inorganic plate (5) and the moisture-proof / waterproof layer (8) interposed therebetween.

Example 3 This example is shown in FIG. 3, in which the base material (10) of the decorative interior material (9) in FIG. 3 has a moisture-proof / water-proof layer (1) on the upper surface.
Different from Example 1 in that it is composed of a flame-retardant medium fiber board (4) provided with (1) and an inorganic board (5) adhered to the lower surface of the fiber board, and otherwise the same as Example 1. Is.

Example 4 This example is shown in FIG. 4, in which the base material (13) of the decorative interior material (12) is a flame-retardant medium fiber board (4).
And an inorganic plate (5) adhered to the lower surface of the inorganic plate (5), and a moisture-proof / waterproof layer (14) provided on the lower surface of the inorganic plate (5), which is different from the first embodiment. Is the same as.

Example 5 This example is shown in FIG. 5, in which the base material (16) of the decorative interior material (15) is a flame-retardant medium fiber board (4).
And an inorganic plate (5), a moistureproof / waterproof layer (8) interposed between the two, and a moistureproof / waterproof layer (14) provided on the lower surface of the inorganic plate (5). Different from the first embodiment, the other points are the same as the first embodiment.

Example 6 This example is shown in FIG. 6. In the decorative interior material (17) of the same figure, the base material (18) has a moisture-proof / water-proof layer (1) on the upper surface.
Flame retardant medium fiberboard (3) provided with 1), inorganic board (5) adhered to the lower surface of this, moisture-proof / waterproof layer (14) provided on the lower surface of inorganic board (5) The third embodiment is the same as the first embodiment except that the second embodiment is different from the first embodiment.

Example 7 This example is a decorative interior material (19) shown in FIG. 7, and in Example 2, the moisture-proof / water-proof layer (8) comprises a polypropylene sheet (20) and an upper surface thereof. Made of aluminum hydroxide paper heat-sealed to the polypropylene sheet and glass nonwoven fabric (21) heat-sealed to the lower surface of the polypropylene sheet (20), and the end faces of the flame-retardant medium fiberboard (5) intersecting each other. The male seeds (23) are provided with small holes (24) on the end faces of the remaining two intersecting sides, and each of the four sides from the decorative layer (3) to the upper part of the flame-retardant medium fiberboard (4). The end face is formed with an outer downward slope (25). When a plurality of the above-mentioned decorative interior materials (19) are joined, a V groove is formed by the slopes (25) of the adjacent decorative interior materials (19).

Example 8 This example is the decorative interior material (26) shown in FIG. 8, and in Example 5, the decorative layer (3) provided on the surface and the moisture-proof / stainless material provided on the lower surface. The waterproof layer (8) and the flame-retardant medium-quality fiberboard (4) are displaced in the width direction with respect to the inorganic sheet (5), and a long slope facing inward and downward is formed on one end surface of the flame-retardant medium-quality fiberboard (4). (27) is formed and a decorative layer (3) on it
From the end face of the flame retardant medium fiberboard (4) to the above slope
A short outward slope (28) that intersects with (27) is formed, from the other end surface of the decorative layer (3) to the middle of the thickness of the other end surface of the flame-retardant medium fiberboard (4), A slope (29) of intermediate length is formed facing downward and parallel to the slope (27), and the decorative layer (3)
A flame-retardant medium fiberboard that extends in the lengthwise direction in the middle of the width of
A groove (30) reaching the upper part of (4) is provided. A plurality of the above decorative interior materials (26) have one long slope (27)
And the slope (29) of the other intermediate length contact each other. At this time, the short slope (28) is the middle length slope (2
The intersections occur in the middle of 9), resulting in the formation of V-grooves similar to V-groove (30).

Example 9 This example is the decorative interior material (31) shown in FIG. 9, and in Example 1, the decorative layer (3) provided on the surface and the flame-retardant intermediate fiber were used. The board (4) is 2 with respect to the inorganic board (5)
Of the two diagonal lines, one of the diagonal lines is displaced in one diagonal direction, and the upward lower step portion (32) for phase cutout is provided on the end faces of the two sides of the flame-retardant medium-quality fiberboard (4) that intersect with each other. Each of the end faces is provided with a downward facing upper step (33), and the decorative layer
(3) is provided with a rectangular groove (34) that extends in the lengthwise direction and reaches the middle of the thickness of the flame-retardant medium-quality fiberboard (4), and further sealers are provided on the upper and lower surfaces of the inorganic plate (5). The processing part (35) is formed.

The projecting length of the upward lower step portion (32) is longer than the projecting length of the downward upper step portion (33), and a plurality of the decorative interior materials (31) are joined to each other in a phased manner to form both step portions (32). When the (33) overlaps, a square groove similar to the square groove (34) is formed beside the overlapping portion.

Next, 15 cm of the decorative interior material of Example 1 was applied.
It is formed into a square of x 15 cm, and the decorative layer has a thickness of 0.3.
mm urethane resin coated wood veneer, inorganic fiber 5 mm thick fiber mixed slag cement board, and flame-retardant medium board thickness 5.5 mm. Tested using a flame-retardant plywood of the same thickness instead of the medium-fuel fiberboard (Comparative Example 1) and using a fiber-mixed slag cement with a sealer-treated base material (Comparative Example 2) It was prepared as a piece and subjected to a crack test.
The crack test was conducted after leaving it in an incubator at 80 ° C for 2 hours, then
The number of cracks is counted by repeating 4 cycles with the step of standing in a thermostat at 0 ° C. for 2 hours as 1 cycle. The results are shown in Table 1.

[0029]

[Table 1] Furthermore, the decorative interior material of Example 7 was formed into a 15 cm × 15 cm square, and the decorative layer was a 0.3 mm thick urethane resin-coated wood decorative veneer, and the inorganic plate was a 5 mm thick fiber-containing slag cement board. Each of them was used, and the thickness of the flame-retardant intermediate plate was set to 5.5 mm, and an epoxy resin seal was applied to the wood mouth surface of the plate as a test piece. . In the alkali contamination test, 67 g of water was absorbed from the back side of the test piece facing upward, covered with a polyethylene sheet and then left as it was, and the discoloration of the wooden decorative veneer was observed.
The results are shown in Table 2.

[0030]

[Table 2]

[0031]

The interior decorative material of the present invention has the following effects. I. When grooving is applied from the surface of the decorative interior material, the blade reaches not the problematic inorganic plate, but the medium-quality fiberboard with excellent machinability, which facilitates grooving and cutting. Since the consumption of the cutting tool is much smaller than that of processing on an inorganic plate, and the dust produced by cutting is a wood material that is lighter than the inorganic material, the dust collection property is improved and the working environment is improved.

B. Since the inorganic material is not exposed even if groove processing from the decorative layer to the lower part is performed or chamfered,
If the decorative layer is made of wood veneer, the wooden texture of the decorative interior material will not be impaired.

C. Since there is a medium-quality wooden board between the inorganic board and the decorative layer, the migration of the alkaline component in the inorganic board to the decorative layer side is delayed, and alkali contamination is suppressed. In particular, when a moisture / moisture barrier layer is provided between at least one of the flame-retardant medium fiber board and the inorganic sheet, and the upper surface of the flame-retardant medium fiber board and the lower surface of the inorganic sheet, the above transition occurs. It is blocked and does not cause alkali pollution.

D. The medium-quality fiberboard under the decorative layer is made of wood fibers that are almost uniform in its entirety. Since it has better moisture absorption / release properties than the inorganic board, it regulates the humidity on the indoor side and does not cause dew condensation.

E. When the decorative layer is a wooden decorative veneer and the inorganic plate is a gypsum board, the decorative veneer does not turn up even if the decorative interior material is cut or grooved, and the decorative interior material has a beautiful appearance. Does not spoil.

F. Since the surface of the medium quality fiberboard is smooth,
The makeup finish is also improved, and when a wooden decorative board is used for the decorative layer, the wooden decorative veneer does not crack even if moisture absorption and release are repeated.

G. Since the medium-quality fiberboard is much easier to bond on the end faces than the inorganic board, any processing can be efficiently performed as needed.

H. Since the flame-retardant medium fiber board is laminated on the upper surface of the inorganic board, it has excellent fire resistance.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of the present invention.

FIG. 2 is a cross sectional view showing a second embodiment of the present invention.

FIG. 3 is a cross sectional view showing a third embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a fourth embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a fifth embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a sixth embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a seventh embodiment of the present invention.

FIG. 8 is a cross sectional view showing an eighth embodiment of the present invention.

FIG. 9 is a cross-sectional view showing a ninth embodiment of the present invention.

FIG. 10 is a partial cross-sectional view showing a defect of the conventional product.

[Explanation of symbols]

 (1) (6) (9) (12) (15) (17) (19) (26) (31): Interior decorative material (2) (7) (10) (13) (16) (18): Base material (3): Decorative layer (4): Flame-retardant medium fiber board (5): Inorganic board (8) (11) (14): Moisture-proof / water-proof layer

Claims (2)

[Claims] 1. A decorative interior material in which a decorative layer is provided on the surface of a base material, wherein the base material is a flame-retardant medium-quality fiberboard and an inorganic board bonded to the lower surface of the fiberboard. . 2. A decorative interior in which a moisture / water barrier layer is provided between at least one of the flame-retardant medium fiber board and the inorganic sheet, and the upper surface of the flame-retardant medium fiber sheet and the lower surface of the inorganic sheet. Material.