JP2005238802A - Noncombustible metal panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a noncombustible metal panel which is a lightweight and low-profile type with a thickness of 3-5 mm, and which has stainproofness and excellent bendability. <P>SOLUTION: A honeycomb core with a thickness of 2 mm, which is composed of flame retardant paper with an aluminum hydroxide/pulp weight ratio of 63/37, is used as a core material 1; an aluminum plate with a thickness of 0.5 mm overlies a front side material 2 and a backside material 3; and a tetrafluororesin overlies the surface of the front side material 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a non-combustible metal panel suitable as a front wall member of a stove for use in a kitchen or fire. More specifically, the present invention relates to a non-combustible metal panel that is lightweight and thin, prevents dirt, and can be bent.

Conventionally, tile face materials are often used as a stove front wall member using fire. However, when tile face materials are used, the heat resistance is good, but because there is no cutting workability or bending workability, the site workability is poor, and oil stains are likely to be attached to the tile surface and joints. Cleaning workability is poor.
In addition, there is a stove front wall member using a high-pressure melamine resin decorative plate on the surface. However, this product has a problem that a portion heated to a high temperature by a heat source such as a stove easily changes color and exhibits brittleness.

  Moreover, there is a metal plate such as stainless steel as a stove front wall member that has no fear of discoloration and brittleness and has good cutting workability and bending workability. However, since dirt easily adheres, cleaning workability is poor, and there is a problem that the building material or the like in contact with the inside of the metal plate is ignited at a low temperature because it is likely to be locally heated by a heat source such as a stove.

A method for solving the above problem is reported in Patent Document 1. In Patent Document 1, a honeycomb structure base material (thickness 5 mm to 100 mm) constituted by a metal plate (thickness 0.1 mm to 2.0 mm) such as aluminum as a surface material and a well-known non-combustible material as a core material. ), A metal plate (thickness 0.1 mm to 2.0 mm) similar to the surface material is laminated on the back surface material, and the surface material surface is formed by further laminating a fluororesin on the surface material surface. The non-combustible metal panel is lightweight and has good heat insulation and cutting workability by having a honeycomb core plate with heat insulation effect between the metal plates on the front and back surfaces. It is stated that you can.
Patent Document 1 describes that it is possible to use a honeycomb core plate mainly composed of aluminum hydroxide as the honeycomb structure base material, and that the thickness in this case is preferably 9 mm.

However, it is difficult to say that the non-combustible metal panel is excellent in on-site workability in terms of thickness. Furthermore, a lighter and thinner stove front wall member is desired.
JP-A-8-323921

  The problem to be solved is to provide a non-combustible metal panel that is lightweight and thin, prevents contamination and can be bent. In particular, it is to provide an incombustible metal panel having a thickness of 3 to 5 mm.

The present inventors use a honeycomb core made of flame retardant paper mainly composed of aluminum hydroxide as a core material, use an aluminum plate as a surface material and a back material, and further process fluororesin on the surface material surface. It has been found that such a problem can be solved by combining the above and the like, and the present invention has been achieved.
That is, the present invention
(1) The core 1 is a honeycomb core made of flame retardant paper mainly composed of aluminum hydroxide having a thickness of 2 to 4 mm, the front material 2 and the back material 3 are aluminum plates having a thickness of 0.5 to 1.0 mm. A non-combustible metal panel, which is a laminated panel having a thickness of 3 to 5 mm, in which a fluororesin 4 is laminated on the surface material 2 surface.
(2) The nonflammable metal panel according to the above (1), wherein the cell size of the honeycomb core is 8 to 20 mm.
(3) The incombustible metal panel as described in (1) or (2) above, wherein the aluminum hydroxide content in the core material 1 is 63 to 87% by weight with respect to the core material.
Is to provide.

  The incombustible metal panel of the present invention is light and thin with a thickness of 3 to 5 mm, prevents dirt, and has an effect of being excellent in bending workability.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a nonflammable metal panel according to an embodiment of the present invention. The core material 1 has a honeycomb core made of flame retardant paper mainly composed of aluminum hydroxide, the surface material 2 and the back material 3 are aluminum plates, and the surface material 2. It has a configuration in which a fluororesin 4 is laminated on the surface. In FIG. 1, a print layer 5 is provided.

The flame retardant paper mainly composed of aluminum hydroxide used in the core material 1 of the present invention is a paper in which aluminum hydroxide is mixed or impregnated into a papermaking raw material or during or after papermaking, The thing of the single layer or multilayer structure currently used as a flame-retardant paper can be used. The aluminum hydroxide / pulp weight ratio is preferably 63/37 to 87/13. When the aluminum hydroxide component exceeds 87%, the flame retardant paper exhibits brittleness, leading to a decrease in strength of the incombustible metal panel itself. Moreover, when a pulp component exceeds 37%, the heat resistance of a nonflammable metal panel will fall.
A honeycomb core is formed using the flame retardant paper. At this time, the cell size is preferably 8 to 20 mm.
Moreover, it is preferable that the aluminum hydroxide content in a core material is 63 to 87 weight% with respect to a core material.

  The surface material 2 and the back surface material 3 of the present invention are made of an aluminum plate. Further, a fluororesin 4 is laminated on the surface of the surface material 2, and as the fluororesin 4, a fluorotetrafluoroethylene resin such as an ethylene tetrafluoroethylene copolymer or a tetrafluoroethylene perfluoroalkyl vinyl ether copolymer is applied. can do. The lamination method is not particularly limited, but a method using a fluororesin film is preferable. In this case, a fluororesin film having a thickness of 5 to 200 μm is used, and is bonded by heat welding or via an adhesive.

  The incombustible metal panel of the present invention is formed by laminating a surface material on which a fluororesin is laminated, a core material, and a back surface material. As a laminating method, for example, it may be bonded through an adhesive.

  The thickness of the incombustible metal panel of the present invention is 3 to 5 mm as the object of the present invention. Further, the thickness of each layer is indispensable that the core material 1 is 2 to 4 mm and the 0.5 mm-thick aluminum plate is a non-combustible material, so that the surface material 2 and the back material 3 are 0.5 to 1.0 mm. is there. In particular, the core material 1 is preferably 2 to 3 mm, the surface material 2 and the back material 3 are 0.5 mm, and the panel thickness is 3 to 4 mm.

  In addition, design layers, such as printing and an uneven | corrugated pattern, can be suitably provided between 4 layers of fluororesins and 2 layers of surface materials.

Hereinafter, the present invention will be described in detail with reference to examples.
Example 1
A 0.5 mm-thick aluminum plate was used as the surface material 2 and a fluorotetrafluororesin was laminated on the surface of the surface material 2 to obtain a surface material on which the fluororesin was laminated.
The core material 1 is made of a honeycomb core made of flame retardant paper having a weight ratio of aluminum hydroxide / pulp of 63/37 (thickness 2 mm, cell size 20 mm), and the back material 3 is made of a 0.5 mm thick aluminum plate and bonded. The surface material, the core material, and the back material on which the fluororesin was laminated were sequentially laminated through the agent to obtain an incombustible metal panel having a weight of 3 kg / m ^{2 and a} thickness of 3 mm.

The evaluation results of the obtained incombustible metal panel are shown below.
A heat resistance test was conducted in an actual test environment at the Japan Gas Equipment Inspection Association Tokyo Laboratory. (Under conditions that are more severe than the separation distance from the gas stove prescribed by the Building Standards Act)
As a result, it was judged that there was no problem.

  As described above, the present invention is a non-combustible metal panel that is lightweight and thin, prevents dirt, and has excellent bending workability. Therefore, the present invention can be suitably used as a stove front wall member for use in kitchens and fire.

It is a section schematic diagram of the noncombustible metal panel concerning one embodiment of the present invention.

Explanation of symbols

1 Core Material 2 Surface Material 3 Back Material 4 Fluororesin Layer 5 Printed Layer

Claims (3)

  A honeycomb core made of flame retardant paper whose main component is aluminum hydroxide having a thickness of 2 to 4 mm, a surface material and a back material are aluminum plates having a thickness of 0.5 to 1.0 mm, A non-combustible metal panel that is a 5 mm laminated panel and has a fluororesin laminated on the surface material surface.   The incombustible metal panel according to claim 1, wherein the cell size of the honeycomb core is 8 to 20 mm.   The incombustible metal panel according to claim 1 or 2, wherein the aluminum hydroxide content in the core material is 63 to 87% by weight with respect to the core material.

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