JP2006116043A - Fire extinguishing sheet and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prepare a fire extinguishing sheet useful for initial fire extinguishment which extinguishes the origin of a fire immediately when an initial fire starts, such as a fire due to overheating of a deep fryer, and also to provide a method for producing the same. <P>SOLUTION: The fire extinguishing sheet is produced by impregnating a sheet made of a natural fiber with a noninflammable liquid. The noninflammable liquid is an aqueous film-forming inorganic compound comprising metallic aluminium or metal silicone, a mineral acid compound that releases boric acid or hydrofluoric acid when hydrated, such as borax, boric acid, sodium fluoride, hydrofluoric acid, and an alkaline metal selected from potassium hydroxide, sodium hydroxide and lithium hydroxide. When reacting the metallic aluminium or metal silicone, the mineral acid compound and the alkaline metal, a solid metal and the alkaline metal react within water or a solution of the metal acid compound to generate a thick solution, and the metal acid compound is then made to react. By controlling the reaction heat at ≥50°C and ≤100°C, a film having a specific density of 1.1 or more is formed. A pair of rod-shaped handles 2 and 3 are preferably attached on the right and left ends of the sheet. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sheet used to quickly extinguish a fire source when an initial fire such as ignition by overheating of a tempura pan occurs and a method for manufacturing the same. The fire-extinguishing sheet of the present invention can be used, for example, in a home kitchen or a commercial kitchen.

Conventionally, a fire extinguishing sheet is commercially available in order to extinguish a fire source in the event of a flaming accident such as a tempura pan. Although it is not known whether it is the same as what is marketed, the following patent document 1 discloses a fire-extinguishing sheet obtained by impregnating and holding a liquid-retaining woven fabric or nonwoven fabric with a fire-extinguishing chemical solution.
Registered Utility Model No. 3041706

  As the fire extinguishing chemical liquid used in Patent Document 1, a non-flammable solvent liquid, preferably an aqueous solution, mainly composed of inorganic salts is usually used. For example, ammonium chloride from about 47% to almost saturated amount by weight, Inorganic salts consisting of 4-8% sodium bicarbonate, about 25% -35% potassium carbonate, about 8-14% ammonium diphosphate and about 2-6% sodium tungstate are added to water. Or about 48% to nearly saturated ammonium chloride by weight, about 28-38% potassium carbonate, about 8-14% dibasic ammonium phosphate, and about 4-8% The thing which melt | dissolved the inorganic salt which consists of sodium bicarbonate in water is mentioned.

  The present invention intends to solve the same problem by using a fire extinguishing chemical different from Patent Document 1.

  The fire-extinguishing sheet of the present invention is obtained by impregnating a fabric made of natural fibers with a non-combustible liquid, wherein the non-combustible liquid is hydrated with metallic aluminum or metallic silicon to dissociate boric acid or hydrofluoric acid, When the mineral acid compound such as boric acid, sodium fluoride or hydrofluoric acid is reacted with the alkali metal of caustic potash, caustic soda or caustic lithium, the metal solid and the alkali metal are reacted in water or in the solution of the mineral acid compound. An aqueous film-forming film characterized by causing a concentrated solution reaction, further reacting with the mineral acid compound, controlling the heat of reaction to 50 ° C. or more and 100 ° C., and forming the product with a specific gravity of 1.1 or more. It is a characteristic inorganic compound.

  The method for producing a fire extinguishing sheet of the present invention comprises metallic aluminum or metallic silicon, a mineral acid compound such as borax, boric acid, sodium fluoride or hydrofluoric acid which hydrates and dissociates boric acid or hydrofluoric acid, caustic potash, caustic soda or When reacting with the alkali metal of caustic lithium, a concentrated solution reaction between the metal solid and the alkali metal is caused in water or the solution of the mineral acid compound, and the mineral acid compound is further reacted, Is controlled at 50 ° C. or higher and 100 ° C. or lower, and a fabric made of natural fibers is impregnated with an aqueous film-forming inorganic compound formed by forming a product with a specific gravity of 1.1 or higher.

  Since the fire extinguishing sheet of the present invention is simply impregnated with a non-combustible liquid in a fabric made of natural fibers, it can be biodegraded and can be disposed of in landfill after use. In addition, it does not generate toxic gas when burned.

  In addition, since the shape is a sheet (for example, a towel) that can be easily folded and wound, there is no sense of incongruity anywhere and it is convenient for storage.

  Furthermore, in a preferred embodiment, since a bag-like portion is provided at both the left and right ends of the seat, and a rod-like handle is attached therein, it takes a dangerous posture such as leaning on the fire source and covering the seat when extinguishing the fire. It will be better.

  Cotton, silk, cotton, hemp, rayon, etc. can be used as the natural fiber, and a nonwoven fabric, a net-like woven fabric, or a knitted fabric can be used as the fabric. A towel is most preferable as the sheet.

  As the incombustible liquid, for example, a substance known in Japanese Patent Publication No. 7-14801 can be used. This material is composed of “aluminum metal or silicon metal, mineral acid compounds such as borax, boric acid, sodium fluoride or hydrofluoric acid that hydrate and dissociate boric acid and hydrofluoric acid, and alkali metal such as caustic potash, caustic soda or caustic lithium. In the reaction of the mineral acid compound in water or in the solution of the mineral acid compound, a concentrated solution reaction between the metal solid and the alkali metal is caused, and the mineral acid compound is further reacted, and the reaction heat is 50 ° C. or more and 100 ° C. It is an aqueous film-forming inorganic compound characterized in that the film is formed at a specific gravity of 1.1 or more. For details, see the same publication.

  Incombustible liquids produced using this substance as a raw material are commercially available, for example, as “Fireless B” (trademark) or “Fireless S” (trademark) from Trust Life Co., Ltd. (Kanazawa City).

  Preferably, rod-like handles are attached to the left and right ends of the sheet. The handle only needs to make a bag-like portion at both ends of the sheet and insert a stick into it. In the event of a fire, the handle can be gripped and covered with a flaming tempura pan or the like so that the sheet sticks out. As a result, it is not necessary to take a dangerous posture such as climbing over a flaming tempura pan or the like and covering the fire extinguishing sheet.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a fire-fighting towel 1 according to the present invention, in which a towel manufactured from 100% cotton fiber woven fabric 2 is impregnated with a non-flammable liquid “Fireless B” (trademark) [Trust Life Manufacturing Co., Ltd.]. It is. It is only necessary to immerse the towel in non-flammable liquid “Fireless B” (trademark) [Trust Life Manufacturing Co., Ltd.], impregnate the liquid by lightly squeezing it, and dry it as it is.

  In addition, since a shape is a towel, there exists a possibility of being misunderstood as a general towel. In order to call attention, it is preferable to display “Towel for fire fighting” or “Do not use as a general towel” on the towel itself or the attached tag. This is because when used as a general towel, the incombustible liquid is washed away, the incombustible effect is reduced, and the intended purpose may not be achieved.

  FIG. 2 is a plan view of the second embodiment. Bar-shaped handles 4 and 5 are provided on the left and right ends of the towel according to the first embodiment. The handle was formed by forming bag-like portions 2 and 3 at both ends of the sheet and inserting rods 4 and 5 therein. When extinguishing a fire, you can hold this handle and cover it with a towel over a flaming tempura pan. As a result, it is not necessary to take a dangerous posture such as climbing over a flaming tempura pan or the like and covering the fire extinguishing sheet.

<Effect confirmation experiment>
The tempura oil in the tempura pan was put, heated to about 380 ° C. with a gas stove, and ignited spontaneously to set the state of fire occurrence. After closing the gas tap, holding the handle of the above-mentioned fire extinguisher towel with both hands, the towel was unfolded and covered so as to protrude into a tempura pot that caused a fire. The fire was completely extinguished in about 10 seconds after coating.

It is a top view of the towel for fire extinguishing of 1st Example of this invention. It is a top view of the towel for fire extinguishing of 2nd Example of this invention.

Explanation of symbols

1,1A Fire-fighting towel 2,3 Bag-like part 4,5 Stick-shaped handle

Claims (4)

A fire extinguishing sheet obtained by impregnating a fabric made of natural fibers with a nonflammable liquid, wherein the nonflammable liquid is hydrated with metal aluminum or metal silicon to dissociate boric acid or hydrofluoric acid, boric acid, boric acid or sodium fluoride. Alternatively, when a mineral acid compound such as hydrofluoric acid is reacted with an alkali metal such as caustic potash, caustic soda or caustic lithium, a concentrated solution reaction between the metal solid and the alkali metal occurs in water or in the solution of the mineral acid compound. An aqueous film-forming inorganic compound characterized by further reacting the mineral acid compound and controlling the heat of reaction to 50 ° C. or higher and 100 ° C. and forming a product with a specific gravity of 1.1 or higher. A sheet for fire extinguishing (1, 1A). The fire-extinguishing sheet according to claim 1, wherein the sheet is a towel. The fire-extinguishing sheet according to claim 1 or 2, wherein bag-like portions (2, 3) are provided at both left and right ends of the sheet, and rod-like handles (4, 5) are attached therein. When reacting metallic aluminum or metallic silicon with a mineral acid compound such as boric acid, boric acid, sodium fluoride or hydrofluoric acid which hydrates and dissociates boric acid or hydrofluoric acid, and alkali metal such as caustic potash, caustic soda or caustic lithium, In water or in the solution of the mineral acid compound, a concentrated solution reaction between the metal solid and the alkali metal is caused, the mineral acid compound is further reacted, and the reaction heat is controlled to 50 ° C. or more and 100 ° C. or less. A method for producing a fire-extinguishing sheet comprising impregnating a fabric made of natural fibers with an aqueous film-forming inorganic compound formed by forming a product with a specific gravity of 1.1 or more.