JP2007045135A - Non-flammable metal panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a non-flammable metal panel which is light in weight and thin with a thickness of 3-5 mm, and stain-resistant and exhibits an excellent bending processability on the four sides. <P>SOLUTION: The non-flammable metal panel is a laminate of a 2 mm thick honeycomb core made of a flame retardant paper sheet with an aluminum hydroxide/pulp weight ratio of 63/37 as a core material 1, a surface material 2 and a backing material 3 both being a 0.5 mm thick aluminum plate. The surface material 2 is further laminated with an EB resin. <P>COPYRIGHT: (C)2007,JPO&INPIT

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 on four sides.

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 there is no cutting workability or four-side bending workability, so on-site workability is poor, and oil stains are easily attached to the tile surface and joints. The cleaning workability is bad.
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 four-side 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 field 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 dirt, and can be folded on four sides. 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 EB resin 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 material 1 is a honeycomb core made of flame retardant paper mainly composed of aluminum hydroxide having a thickness of 2 to 4 mm, the surface 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, and the surface material 2 is laminated with an EB resin 4.
(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 excellent four-side 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. A core material 1 includes a honeycomb core made of flame retardant paper mainly composed of aluminum hydroxide, a surface material 2 and a back material 3 with an aluminum plate and a surface material 2. It has a configuration in which the EB resin 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, an EB resin 4 is laminated on the surface material 2 surface. The lamination method is not particularly limited, but a method using an EB resin film is preferable. In this case, an EB resin film having a thickness of 5 to 40 [mu] m is used and 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 an EB resin 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.

  It should be noted that a design layer such as printing or a concavo-convex pattern can be appropriately provided between the four layers of the EB resin and the two 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 for the surface material 2, and an EB resin was laminated on the surface of the surface material 2 to obtain a surface material on which the EB resin 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 EB resin was laminated were sequentially laminated through the agent to obtain a noncombustible 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 the condition of 10cm in front that is stricter than the separation distance from the gas stove stipulated by the Building Standard Law)
As a result of inspecting the transition of the panel surface temperature and the base temperature when the gas table is used by installing a gypsum board on the panel and the base of the present invention, the surface is not visually abnormal and the temperature is 60 degrees or less on the front panel surface. It was 35 degrees or less.
(Atmosphere temperature is 25 degrees)
This is due to the heat diffusion effect of the front and back materials of the aluminum plate, and the space between the core materials makes it difficult to transfer heat.

  As described above, the present invention is a non-combustible metal panel that is lightweight and thin, prevents dirt, and has excellent four-side 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 EB Resin Layer 5 Print 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 nonflammable metal panel, which is a 5 mm laminated panel, and a resin (hereinafter referred to as EB resin) formed by cross-linking and curing by electron irradiation 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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