JPS608991Y2 - Core material for insulation panels - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to improving the heat insulation properties of panels used in buildings and the like.

Panels with a honeycomb sandwich structure using a core material such as paper are used for various purposes such as flush doors, curtain walls, and floors because they have high strength per weight, high tonality, and are cost-effective.

In addition, the insulation properties are better than other materials because each honeycomb cell has an airtight structure with both upper and lower sides closed, making it relatively difficult for convection to occur, and the air inside the cells has low thermal conductivity. However, it is not effective in preventing the flow of energy due to heat radiation, and in order to further improve the heat insulation properties, methods such as filling the cells with plastic foam or the like are recommended.

However, the method of filling the insulation material requires a complicated manufacturing process and is also expensive.

An object of the present invention is to provide a panel core material that is easy to manufacture and has excellent heat insulation properties.

This invention obtains an excellent core material for insulation panels by sandwiching and laminating aluminum or aluminum alloy foil, which has a low heat absorption rate and very low emissivity, on a honeycomb material such as paper, which has a low thermal conductivity. It is.

An embodiment of the present invention will be explained based on the drawings. Paper honeycomb members 1.1' and 1" are respectively 1 and 1', 1' and 1"
Aluminum foils 2, 2' are placed perpendicularly to the honeycomb side wall between
are laminated and glued together in a sandwich shape.

The honeycomb materials used include kraft paper, liner paper, materials impregnated with synthetic resin, and asbestos paper.

The aluminum foil or aluminum alloy foil should preferably be relatively thick, and the preferred range is approximately 0.02~
The thickness is 0.271 rIn, and if it is too thin, the adhesion to the honeycomb material and the workability during manufacturing will be poor, and if it is thicker than necessary, it will be uneconomical.

Also, aluminum foil or the like with a shiny surface is preferable because it has a lower heat absorption rate.

For adhesion between the aluminum foil and the honeycomb material, for example, a rubber adhesive such as epoxy resin, nitrile adhesive, or neoprene adhesive is used.

In this example, there are three layers of honeycomb material, but two layers of honeycomb material and one layer of aluminum foil may be used, or three layers of honeycomb material may be used.
The number of layers may be more than one layer, and is appropriately selected depending on the application temperature and the like.

The present invention has a combination of the low thermal conductivity of the paper honeycomb material and the low heat absorption rate and low emissivity of aluminum foil, etc., resulting in a lower thermal conductivity than the conventional honeycomb core material, and exhibits an effective heat insulating effect.

FIG. 2 shows a cross-sectional view of a flush door as an example to which the core material for insulation panels according to the present invention is applied.

In the figure, numeral 3 denotes a surface plate adhered to the surface of the core material of the present invention, numeral 4 denotes edge materials arranged around the four peripheries, and the core material is composed of three layers of honeycomb material and two layers of aluminum foil.

The present invention has the above-mentioned configuration, so it has an excellent heat insulating effect, and is easy to manufacture because it only requires adhesion and lamination of aluminum foil or the like between the honeycomb materials.

Further, when manufacturing panels using this core material, there is an advantage that conventional panel manufacturing equipment can be used as is, and it is advantageous in terms of cost.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an embodiment of the present invention, and FIG. 2 is a partially cutaway cross-sectional view of a flush door to which the core material for a heat insulation panel according to the present invention is applied. 1.1', 1"-...honeycomb material, 2,2'...
... Aluminum foil, 3 ... Surface material, 4.
...Edge wood.

Claims (1)

[Scope of utility model registration request] A core material for a heat insulating panel, characterized in that a plurality of plate-shaped honeycomb materials with low thermal conductivity are bonded and laminated with aluminum or aluminum alloy foil sandwiched between each plate-shaped material so as to be perpendicular to the honeycomb side wall.