JP3041706U - Fire extinguishing sheet - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a simple fire extinguisher that can be used in an emergency without missing the fire extinguisher. [Structure] The fire extinguishing sheet 1 is formed by impregnating and holding a fire extinguishing liquid in a liquid-retaining woven or non-woven substrate sheet. The fire extinguishing sheet is typically stored in the closed container 2 and stored easily so that it can be used in an emergency without letting the fire extinguisher escape.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention is a fire extinguishing sheet which has an effect of covering the source of a fire to extinguish a suffocation at the time of an initial fire such as ignition due to overheating of a tempura pan, or covering the body to protect skin and clothes from a fire when a fire is blamed. Or it relates to a simple fire extinguisher.

[0002]

[Prior art]

 Generally, at the beginning of a fire such as a tempura hot pot, it is known to close the gas tap and cover the fire source with a sheet of towel, sheets, blanket, etc. to extinguish the fire. However, since these sheet-like substances do not always exist at hand in an emergency due to the purpose of their use, they may miss the fire extinguishing time, and because they do not have sufficient fire resistance, they may be permeated and diffused by oil or the like. There is concern about expanding the combustion range. Even if a nonflammable sheet (for example, glass fiber) is used, it is not possible to expect active fire extinguishing because it only blocks air.

[0003]

[Problems to be solved by the device]

 The present invention is to provide a simple fire extinguisher that can be used in an emergency without missing the fire extinguisher.

[0004]

[Means for Solving the Problems]

The present invention provides a liquid-retaining hydrophilic woven fabric / nonwoven fabric, preferably made of natural fibers or artificial fibers, or a synthetic fiber woven fabric / nonwoven fabric that does not melt at high temperature or is difficult to melt by post-treatment. For extinguishing fire by adding a fire-extinguishing function to the base sheet by impregnating and holding a fire-extinguishing chemical liquid (hereinafter referred to as fire-extinguishing liquid), typically an aqueous solution containing inorganic salts as the main component, inside the material sheet. It is a sheet. The present invention also requires that the fire extinguishing sheet be compactly stored in a container (bag or case) having a structure that suppresses evaporation of the fire extinguishing liquid during storage and allows the sheet to be easily taken out in an emergency. It provides a simple fire extinguisher that can be kept in place. The fire-extinguishing chemical liquid or fire-extinguishing liquid is a chemical that generally produces incombustible gas by heat and achieves the fire-extinguishing effect. The material of the above-mentioned base material sheet is preferably liquid-retaining, hydrophilic, or one which is not melted at high temperature or made difficult to melt by post-treatment, and may be flammable or non-flammable, pulp, cotton. Examples include natural fibers such as wool and hemp; artificial fibers such as viscose, copper ammonia rayon, rock wool, and carbon; synthetic fibers such as aromatic polyamides that do not melt at high temperatures or are difficult to melt by post-treatment. However, it is not limited to these as long as it has liquid retention. Particularly preferred sheet materials include woven or non-woven fabrics of natural fibers such as pulp paper and cotton cloth, or woven or non-woven fabrics of aromatic polyamide. The thickness of the base sheet is about 40 to 100 g / m ^{2 in} terms of a basis weight (US square meter), and a size of about 80 cm × 100 cm is suitable, but it can be arbitrarily set depending on the material density and the purpose of application.

As the fire-extinguishing chemical liquid, a non-flammable solvent liquid containing an inorganic salt as a main component, preferably a water-soluble liquid is usually used. For example, about 47% by weight of ammonium chloride to about a saturated amount of ammonium chloride, Inorganic salts consisting of 4-8% sodium bicarbonate, about 25% -35% potassium carbonate, about 8-14% dibasic ammonium phosphate, and about 2-6% sodium tungstate, Dissolved in water; or about 48% to about saturated ammonium chloride by weight, about 28-38% potassium carbonate, about 8-14% dibasic ammonium phosphate, about 4-8%. Inorganic salts of sodium bicarbonate dissolved in water are mentioned. Conventional fire extinguishing liquids composed of other inorganic salts can also be used. The fire extinguishing liquid is impregnated into and retained in the base sheet in an amount of about ½ or more, preferably about 2 times or more, and usually about 1 to 3 times the weight of the base sheet. In addition, as long as sufficient impregnation of the base sheet can be achieved, a fire extinguishing solution composed of a suspension instead of a solution can be used.

[0006]

[Action and effect]

 Fire resistance is imparted to the base sheet by impregnating and holding the reinforced fire extinguishing liquid, and the cooling effect due to evaporation of the fire extinguishing liquid and the air blocking effect due to the gas generated by the thermal decomposition of the fire extinguishing liquid components are combined to provide a fire extinguishing function. Is demonstrated.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. In the figure, 1 is a sheet that is impregnated with fire extinguishing liquid and is folded (or wrapped), and 2 is a hermetically sealed bag or case that contains a sheet.

[0008]

Example 1 A fire extinguishing sheet 1 according to one embodiment of the present invention is based on a non-woven fabric of aromatic polyamide fiber having a basis weight of 100 g / m ² and having 57% by weight of ammonium chloride, 6 A fire extinguishing solution prepared by dissolving 25 to 30% by weight of an inorganic salt composed of sodium bicarbonate in an amount of 27% by weight, potassium carbonate in an amount of 27% by weight, and ammonium diphosphate in an amount of 10% by weight in water is used as the base material weight. It is impregnated with 2 to 3 times its volume and folded into an accordion bellows shape so that it can be easily spread (see FIG. 1 (A)). Further, in order to further facilitate the unfolding of the sheet, it is convenient to handle if one of the edges is folded back with a width of 10 to 15 cm and the both ends are fixed with sewing seams 1a (FIG. 3). Next, the folded impregnated sheet was sealed in a bag 2 made of a laminated film of cellophane-polyethylene which was vapor-deposited with aluminum to prepare a simple fire extinguisher (see FIG. 1 (B)). Further, the bag 2 is provided with a cutout portion 2a on the outer periphery of the end portion which is heat-welded so as to be easily opened.

Put 1 liter of tempura oil in a tempura pan, heat to about 380 ° C. with a gas stove, set it to a state of fire by spontaneously igniting, and after closing the gas tap, the above-mentioned simple fire extinguisher The bag was torn with both hands, the fire extinguishing sheet was taken out, unfolded, and covered with a fire-causing tempura pot from the front. The fire was completely extinguished in about 10 seconds after coating.

[0010]

Example 2 A fire extinguishing sheet 1 according to another embodiment of the present invention shown in FIG. 2 is based on a carbon fiber nonwoven fabric having a basis weight of 75 g / m ² as a base material, and contains 50% by weight of ammonium chloride and 5% by weight. A fire-extinguishing solution prepared by dissolving inorganic salts composed of sodium bicarbonate, 30 wt% potassium carbonate, 10 wt% dibasic ammonium phosphate and 5 wt% sodium tungstate in water in an amount of 25 to 30 wt%. The base material sheet was impregnated with about twice the weight of the base material sheet and wound on a plastics core so as to be easily spread (see FIG. 2 (A)). Next, the sheet wound around this core was enclosed in a cylindrical container with a lid, which was molded from a resin such as polyvinyl chloride and had excellent airtightness, to fabricate a simple fire extinguisher (FIG. 2 (B)). The fire extinguishing performance of this simple fire extinguisher was also the same as that shown in Example 1. The composition and amount of the extinguishing liquid to be impregnated, the material and the size of the base sheet are not limited to the examples. In addition, although the present invention is illustrated as a fire extinguishing tool in the embodiments, an evacuation tool that protects from a high-heat fire by deploying this fire extinguishing sheet and covering it on the body during an emergency evacuation in the event of a fire. It can also be used as

[Brief description of the drawings]

FIG. 1 (A) is a perspective view of a fire extinguishing sheet of the present invention in which a sheet impregnated with a fire extinguishing liquid is folded into an accordion bellows shape for easy deployment, and FIG. 1 (B) shows extinguishing the fire extinguishing sheet. The top view of the state stored in the bag for preventing liquid evaporation is shown.

FIG. 2A is a perspective view of a fire extinguishing sheet of the present invention in which a sheet impregnated with a fire extinguishing liquid is wound around a plastics core for easy deployment, and FIG. FIG. 3 is a plan view showing a state in which the sheet wound around a core is housed in a cylindrical case with a lid, which is resin-molded to prevent evaporation of a fire-extinguishing liquid and has an excellent airtightness.

FIG. 3 shows an embodiment of a fire-extinguishing sheet of the present invention in which one of the edges is folded back with a width of 10 to 15 cm and both ends thereof are fixed by sewing seams in order to facilitate the development of the sheet.

[Explanation of symbols]

 1: Fire extinguishing sheet 1a: Sewing seam 1b: Winding core 2: Bag or case for storing fire extinguishing sheet 2a: Notch for opening 2b: Sealing case lid 2d: Sealing case body

Claims (4)

[Utility model registration claims] 1. A fire extinguishing sheet obtained by impregnating and holding a liquid-holding woven or non-woven substrate sheet with a fire-extinguishing chemical liquid. 2. The fire-extinguishing sheet according to claim 1, wherein the base sheet is made of hydrophilic natural fiber or artificial fiber, and the fire-extinguishing chemical liquid is an aqueous solution containing an inorganic salt as a main component. 3. The fire extinguishing sheet according to claim 1, wherein the base material sheet is made of synthetic fiber which is not melted at a high temperature or is hard to melt in a post-treatment. 4. A fire extinguishing sheet obtained by impregnating and holding a liquid retaining woven or non-woven substrate sheet with a fire extinguishing chemical liquid,
A simple fire extinguisher that can be easily taken out and stored in a closed container.