JPH065947U - Fireproof panel - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a panel that has a surface layer of natural wood, is fire resistant, is lightweight, and has high physical strength and sound insulation. [Composition] Inorganic foam board 11 and calcium silicate board 12
A laminate of and is used as a core material 10, and a natural wood decorative plywood 21 is laminated on the core material 10 as a surface layer material.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fireproof and fireproof panel which can be used as a constituent material of an inner wall of a house, a ship, a vehicle, a partition, a door, furniture or the like.

[0002]

[Prior art]

 Conventionally, panels having a natural wood surface layer have been widely used as constituent materials for interior walls, partitions, doors, furniture, etc. because of their beauty and luxury. In the past, such a panel used a wood-based core material such as wood-ply plywood, lumber core or particle board, and a natural wood decorative veneer was attached to the surface layer. When fire resistance is required, a slate plate or asbestos plate is used as a core material and a natural wood decorative veneer is attached to the surface of the core material.

[0003]

[Problems to be solved by the device]

 However, of these, the ones that use wood-based core materials are extremely flammable, so their fields of use have been significantly limited. Those using a slate plate as the core material are extremely heavy and difficult to process, and the slab of the surface layer is likely to swell or peel. Asbestos boards with core materials cannot be used from a hygienic standpoint. Therefore, the inventors of the present invention, as a fireproof panel that has a surface layer of natural wood and is fireproof and lightweight, uses an inorganic foam board or a calcium silicate board as a core material and a natural wood decorative plywood as a surface material. We have solved these problems by providing a laminate consisting of However, of these, those with an inorganic foam plate as the core material are required to have higher strength against twisting, bending, impact, etc., and those with the calcium silicate plate as the core material are required to be lighter in weight. It was Therefore, it is an object of the present invention to provide a fireproof yet lightweight, high-strength panel having a surface layer of natural wood.

[0004]

[Means for Solving the Problems] Such a problem is a fire-resistant panel in which a laminate of an inorganic foam plate and a calcium silicate plate is used as a core material, and a natural wood decorative plywood is bonded to this core material as a surface layer material. Can be solved by providing.

The fire-resistant panel of the present invention is beautiful because the surface layer is a decorative plywood of natural wood, and it has a good feel and a high-class feeling. In addition, since the core material is a laminate of inorganic foamed board, which has high fireproof heat insulation performance and is lightweight, and calcium silicate board, which is a highly flexible noncombustible material, the entire panel has fireproof heat resistance. It has high strength and high strength against twisting, bending and impact. Therefore, the fire-resistant panel of the present invention can be widely used as a constituent material for an inner wall of a house, a ship, a vehicle, a partition, a door, or furniture.

[0006]

【Example】

 Next, the present invention will be described in detail with reference to examples. FIG. 1 is a sectional view showing an embodiment of the fireproof panel of the present invention. In FIG. 1, 10 is a core material. The core material 10 is composed of a laminate in which an inorganic foam plate 11 is used as a central material, and this is sandwiched between two calcium silicate plates 12. The inorganic foam plate 11 and each calcium silicate plate 12 are adhered by an adhesive agent (not shown). Natural wood decorative plywood 21 is adhered to both surfaces of the core material 10 as an outer layer material by an adhesive (not shown).

The inorganic foam plate 11 which is one of the constituent materials of the core material 10 has, for example, a specific gravity of 0. An aluminum hydroxide-based foam board having a weight of 1 to 0.6, a lightweight cement board, or the like can be used. As an example of this lightweight cement board, one having a composition (wt%) consisting of modified magnesia cement (80), inorganic admixture (10), inorganic fiber material (5), and organic material (5) can be mentioned. . As the calcium silicate plate 12 which is the other constituent material of the core material 10, for example, a commercially available one such as a fiber-containing calcium silicate plate of No. 1061 which is approved by the Minister of Construction can be used. A water-based polymer isocyanate adhesive, an acrylic resin adhesive, an epoxy resin adhesive, an inorganic adhesive, or the like can be used to bond the inorganic foam plate 11 and each calcium silicate plate 12. The natural wood decorative plywood 21 used as the surface layer material is, for example, a wood decorative veneer having a thickness of about 0.2 to 1 mm and a lauan plywood having a thickness of about 1 to 5 mm. A water-based polymer isocyanate adhesive, an acrylic resin adhesive, an epoxy resin adhesive, an inorganic adhesive, or the like can be used to bond the core material 10 and the natural wood decorative plywood 21. The thickness of these inorganic foam board 11, calcium silicate board 12, and natural wood decorative plywood 21 is, for example, 20 to 30 mm for the inorganic foam board 11 and 3 to 12 mm for the calcium silicate board in the case of a fireproof panel having a total thickness of 45 mm. It is preferable that the natural wood decorative plywood 21 has a thickness of 1.2 to 6.0 mm. .

A fire door having the following specifications was produced by using the fire resistant panel having the above-described structure. Dimensions: height 2400 mm, width 900 mm, thickness 45 mm. Inorganic foam board: Fiber-containing lightweight modified cement board (composition weight%: modified magnesia cement 80, inorganic admixture 10, inorganic fiber 5, organic 5). Calcium silicate plate: Calcium silicate plate mixed with fibers (non-combustible No. 1061 certified by the Minister of Construction). Surface material: Natural wood decorative plywood. (Weight test) The weight of the fire door of the above example was 40 kg. On the other hand, a control example of the same size produced by laminating the same surface layer material as that of the example on the core material made of only the calcium silicate plate was 68 kg. (Fireproof performance test) When the fireproof performance test specified in the Ministry of Construction Notification No. 1125 in 1990 was carried out, the fireproof doors of the examples satisfied the standards of Class A fireproof doors. (Physical property test) The fire door of the example was subjected to a torsional rigidity test, a bending rigidity test, a continuous opening / closing test, a durability (shape stability) test, and a coating film adhesion test, and the results were obtained in all tests. The acceptance criteria were met. (Sound insulation performance test) When the sound insulation performance of the fire door of the example was measured, a sash grade of 25 dB was achieved and the basic performance as a door was satisfied.

As is clear from the above results, the fire-resistant panel of the present invention has excellent fire resistance and heat insulating property even though it has a wooden surface layer, and the door made using this has been manufactured by the Ministry of Construction in 1990. It had the performance to pass Class A fire door in the fire performance test specified in Notification No. 1125. Furthermore, results satisfying the acceptance criteria were also obtained in the physical property test and the sound insulation performance test.

In the fireproof panel of the present invention, the structure of the core material is not limited to that shown in the previous embodiment, but two inorganic foam plates are bonded to both surfaces of one calcium silicate plate. Alternatively, one or more calcium silicate plates and one or more inorganic foam plates may be alternately laminated.

[0011]

【effect】

 The fire-resistant panel of the present invention comprises a core material 10 made of a laminate of an inorganic foam board 11 and a calcium silicate board 12, and a natural wood decorative plywood 21 bonded to the core material 10 as a surface layer material. In addition, it has the effect of being fire-resistant while having a surface layer of natural wood, being lightweight, and having high physical strength and sound insulation.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a fireproof panel of the present invention.

[Explanation of symbols]

10 ... Core material, 11 ... Inorganic foam board, 12 ... Calcium silicate board, 21 ... Natural wood decorative plywood.

Claims (1)

[Scope of utility model registration request] 1. A fire-resistant panel characterized by using a laminate of an inorganic foam plate and a calcium silicate plate as a core material, and laminating a natural wood decorative plywood as a surface layer material to the core material.