JPS593268B2 - Fireproof sheet and insulation panel using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fireproof sheet that improves the fireproofing properties of sheet materials used in building materials, and a fireproof heat insulating panel containing this fireproof sheet in a core material made of a heat insulating material.

In general, sheet-like materials are often used as interior materials and back materials for exterior wall panels because of their excellent flexibility and workability.

However, mere sheet-like materials, for example, kraft paper and plastic sheets, have only the performance of being combustible, and asbestos paper has the performance of being non-combustible. Moreover, fire prevention regulations have recently been required for this type of sheet-like material, and as a countermeasure, for example, sheets in which the entire surface of the sheet-like material is impregnated with a fire-prevention material are known. However, in this case, the fireproofing material was inorganic and was melted and impregnated, so it was hard and brittle on the sheet material and in the tissue, so when it was wound,
During construction, cracks and destruction5 occurred in the fireproofing layer, which not only spoiled the appearance, but also caused part of the fireproofing material to peel off. In addition, since the insulation material for panels is mainly made of plastic foam, which is flammable, we also need to make it flame retardant.
Nonflammability is required, and panels in which inorganic materials are simply mixed into the foam are known as solutions that meet this requirement. This is technically extremely difficult.The present invention aims to eliminate such drawbacks by
The foamable inorganic material, which foams under high heat, is distributed on the sheet-like material so as not to interfere with the winding of the sheet-like material, and is fixed together, and the foamable inorganic material peels off when the sheet-like material is used. It can be easily installed and delivered without causing cracks or destruction, and it also protects the insulation material in the panel from high heat and does not adversely affect the filling of the insulation material. This project proposes a fire-resistant insulation panel with enhanced fire resistance.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a fireproof sheet 25 according to the present invention and a fireproof heat insulating panel using the same will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view showing an example of the above fireproof sheet;
2 is a fireproof sheet, and 2 is a thin sheet-like material made of one of, for example, paper, woven fabric, nonwoven fabric, plastic film, felt, etc. Reference numeral 3 is a foamable inorganic material that expands under high heat to form an inorganic foam layer to protect the sheet material 2 and the heat insulating material described below from high heat.

In addition, the foamable inorganic material 3 peeled off from the sheet-like material 2 during the winding and construction of the sheet-like material 2, caused cracks, damaged the appearance, and decreased the fire resistance. As shown in Figure 1, it melts in a drip shape, and as shown in Figures 2a and b, it melts in a dotted line shape or a straight line shape with appropriate intervals and is fixed as one piece. To explain further, the foamable inorganic material 3 is one of borates such as borax and sodium metaborate, silicates such as sodium silicate and sodium metasilicate, or phosphates such as dibasic sodium phosphate and sodium metaphosphate. It consists of a single species or a mixture of two or more species. As shown in FIG. 3, the state in which the foamable inorganic material 3 adheres to the sheet material 2 is due to impregnation with the melted foamable inorganic material 3 through the voids between the fiber structures. , the structure is such that it reaches the back surface and solidifies, reinforcing the sheet-like material 2. Of course, if the sheet material 2 has a dense structure, the foamable inorganic material 3
Although only ≦parts are impregnated, in the rough structure, the structure of the sheet-like material 2 is bound. FIG. 4 shows another invention, a fireproof heat insulating panel, in which the fireproof sheet 1 is contained in the foamed structure of a heat insulating material 6 interposed integrally between a surface material 4 and a back material 5. . That is, the surface material 4 is a metal plate or the like formed with a concave cross section, and male and female connection portions are formed on the left and right side wall ends, and the back material 5 is made of a liner material such as kraft paper. It is. The heat insulating material 6 is a synthetic resin foam, and when the foam is formed, for example, a fireproof sheet 1 is interposed as shown in FIG. 4, and these constituent materials are fixed together. What has been described above is only one embodiment of the present invention, and the heat insulating material 6 can also contain pearlite grains. As described above, according to the fireproof sheet and the fireproof insulation panel using the same according to the present invention, the foamable inorganic material is fixed to the sheet-like soil in a drip-like manner and in a straight line with intervals. Even when bent, the solidified brittle foamed inorganic material hardly peels off from the sheet-like material or cracks, and the appearance is not impaired. Also,
Because the foamable inorganic material is melted, fixed, and impregnated onto the sheet-like material, it has the feature of reinforcing the strength of the sheet-like material. Furthermore, since fireproof sheets can be easily bent, they can be easily supplied to a continuous line, leading to cost reductions. In addition, the fireproof insulation panel has the feature that the fireproof sheet can be contained within the insulation material reliably and evenly without disturbing the foam structure of the insulation material. Furthermore, when the surface material of a fireproof insulation panel is exposed to high heat, the insulation material between the surface material and the fireproof sheet burns, but the foamable inorganic material of the fireproof sheet gradually foams, causing the surface material and the fireproofing material to combust. An inorganic foam layer is formed between the sheets to prevent combustion from deeper layers, so high heat does not reach the back side.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the fireproof sheet according to the present invention, FIGS. 2A and 2b are explanatory diagrams showing the distribution of the foamable inorganic material in the fireproof sheet, and FIG. FIG. 4 is a cross-sectional view of an embodiment of a fireproof heat insulating panel, which is another invention. 1... Fireproof sheet, 2... Sheet-like material, 3... Foaming inorganic material, 4... Surface material, 6... Insulation.

Claims (1)

[Claims] 1. The sheet is characterized in that one or more types of foamable inorganic materials that foam under high heat are distributed on the sheet in a dropwise or linear manner so that it can be rolled, and are melted and fixed together. fireproof sheet. 2. In a panel in which a synthetic resin foam is filled in the concave shape of a surface material formed to have a concave cross section, and a backing material is laminated on the surface of the synthetic resin foam, and these constituent materials are integrally formed, the foam structure of the foam is heated under high heat. A fire-resistant heat insulating material characterized in that one or more types of foamable inorganic material foamed in a sheet are distributed in a dropwise or linear manner so as to be rollable on a sheet, and a fireproof sheet is integrally fixed to the sheet. panel.