Fire-extinguishing material, fire-extinguishing material roll, and method of manufacturing fire-extinguishing material

Abstract

To provide a fire-extinguishing material capable of dealing with a multistage fire, a fire-extinguishing material roll, and a method of manufacturing the fire-extinguishing material.SOLUTION: A fire-extinguishing material roll 1 is formed by winding a fire-extinguishing material 2 like a roll. The fire-extinguishing material 2 comprises a plurality of fire-extinguisher layers 4 that are arranged separately from one another in the state of containing a fire-extinguisher, and a packaging material 6 into which the plurality of fire-extinguisher layers 4 are individually encapsulated. Thus, since the plurality of fire-extinguisher layers 4 can react in a multistage manner, a multistage fire can be dealt with. In other words, fire extinction can be performed in a multistage manner.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a fire extinguishing material, a fire extinguishing material roll, and a method for manufacturing the fire extinguishing material. [Background technology]

[0002] From the viewpoint of minimizing damage caused by fire, it is desirable to carry out some kind of fire-extinguishing work (initial fire extinguishing) at a stage immediately after the fire breaks out. By placing a fire-extinguishing material containing an extinguishing agent such as an organic salt or an inorganic salt near an object that is likely to catch fire, it is expected that the fire will be extinguished before a person senses that the object has caught fire. From this viewpoint, fire-extinguishing materials in which a fire-extinguishing agent is sealed in a packaging bag have been proposed (for example, see Patent Document 1). With such fire-extinguishing materials, when a fire breaks out, the extinguishing agent reacts, dissolving the packaging bag on the side facing the fire and creating a large hole, and the reacted extinguishing agent is forcefully released toward the fire to extinguish the fire. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2023 / 277040 Summary of the Invention [Problem to be solved by the invention]

[0004] However, depending on the type of fire, there is a possibility that fires may break out in multiple places or over a wide area, resulting in a multi-stage fire. In particular, in a fire inside a distribution board, the flames may travel along the wiring, making it easy for a multi-stage fire to break out. However, with the above-mentioned conventional fire extinguishing materials, all or most of the material is consumed in one reaction, making it difficult to react a second time or later. For this reason, there is a possibility that the material may not be able to respond to a multi-stage fire.

[0005] Therefore, it is conceivable to install a large-area fire extinguishing material so that even if a part of the fire extinguishing agent reacts, a region of the fire extinguishing agent that does not react remains. However, with the above-mentioned conventional fire extinguishing material, a hole is made in the packaging bag during the first fire extinguishing, and when the second or subsequent reactions occur, the packaging bag is already in a state where a hole is made, so that the directionality of the fire extinguishing agent is lost, and the fire extinguishing performance may be significantly reduced.

[0006] The present invention has been made to solve such problems, and has an objective of providing a fire extinguishing material, a fire extinguishing material roll, and a method for manufacturing a fire extinguishing material that can respond to multi-stage fires. [Means for solving the problem]

[0007] [1] The fire extinguishing material according to the present invention comprises a plurality of fire extinguishing agent layers each containing an extinguishing agent and spaced apart from one another, and a packaging material that individually encloses the plurality of fire extinguishing agent layers.

[0008] In this extinguishing material, since a plurality of extinguishing agent layers arranged at a distance from each other are individually enclosed in a packaging material, it is possible to suppress a chain reaction of the extinguishing agent between the plurality of extinguishing agent layers. In other words, even if one extinguishing agent layer reacts and is consumed, the other extinguishing agent layers can be left in an unreacted state. In addition, even if a portion of the packaging material enclosing one extinguishing agent layer melts and a hole is formed, the other extinguishing agent layers can be left in a state enclosed in the packaging material. This allows the plurality of extinguishing agent layers to react in multiple stages, making it possible to respond to a multi-stage fire. In other words, fire extinguishing can be performed in multiple stages.

[0009] [2] In the fire extinguishing material according to [1], the fire extinguishing agent may contain at least one of an organic salt and an inorganic salt. Since the fire extinguishing agent contains at least one of an organic salt and an inorganic salt, the fire extinguishing material can obtain appropriate fire extinguishing performance.

[0010] [3] In the fire extinguishing material described in [2], the fire extinguishing agent may contain a compound having an oxidizing effect. Since the fire extinguishing agent contains a compound having an oxidizing effect, the fire extinguishing material can generate an aerosol by receiving thermal energy of a fire.

[0011] [4] In the extinguishing material according to any one of [1] to [3], the extinguishing agent may contain potassium citrate and potassium chlorate. Since the extinguishing agent contains potassium citrate and potassium chlorate, the extinguishing material can obtain appropriate fire extinguishing performance.

[0012] [5] In the extinguishing material according to any one of [1] to [4], each of the plurality of extinguishing agent layers may contain a binder. Since each of the plurality of extinguishing agent layers contains a binder, the properties of the extinguishing agent are easily maintained, and the frequency of replacement of the extinguishing material can be reduced.

[0013] [6] In the extinguishing material according to any one of [1] to [5], the content of the extinguishing agent in the extinguishing agent layer may be 70% by mass or more and 97% by mass or less. Since the content of the extinguishing agent in the extinguishing agent layer is 70% by mass or more, this extinguishing material can easily achieve excellent fire extinguishing performance. Furthermore, since the content of the extinguishing agent in the extinguishing agent layer is 97% by mass or less, it is easy to suppress deliquescence of the extinguishing agent and to form a homogeneous extinguishing agent layer.

[0014] [7] In the extinguishing material according to any one of [1] to [6], the packaging material may be formed in an elongated shape, and the plurality of extinguishing agent layers may be arranged in the longitudinal direction of the packaging material. Since the plurality of extinguishing agent layers are arranged in the longitudinal direction of the packaging material, this extinguishing material can respond to multi-stage fires in the longitudinal direction of the packaging material. In addition, since the extinguishing material can be cut so as to be divided in the longitudinal direction and used, the extinguishing material can be made into various shapes, and the degree of freedom in installation is also improved.

[0015] [8] In the extinguishing material described in [7], the extinguishing agent layers may also be arranged in the width direction of the packaging material perpendicular to the longitudinal direction. In this extinguishing material, the extinguishing agent layers are also arranged in the width direction of the packaging material, so that it is possible to deal with multi-stage fires in the width direction of the packaging material. In addition, since the extinguishing material can be cut so as to be divided in the width direction and used, the extinguishing material can be made into various shapes, and the degree of freedom in installation is also improved.

[0016] [9] In the extinguishing material according to any one of [1] to [8], the shortest distance between adjacent extinguishing agent layers may be 10 mm or more. In this extinguishing material, since the shortest distance between adjacent extinguishing agent layers is 10 mm or more, it is possible to suppress the adjacent extinguishing agent layers from reacting with each other. In addition, when the extinguishing material is cut between adjacent extinguishing agent layers, it is possible to delay the arrival of moisture permeating from the cut surface to the extinguishing agent layer. In particular, by cutting the extinguishing material in the center between adjacent extinguishing agent layers, it is possible to make the distance from the cut surface to the extinguishing agent layer 5 mm or more, so that it is possible to further delay the arrival of moisture permeating from the cut surface to the extinguishing agent layer. Therefore, even when a deliquescent extinguishing agent is used, it is possible to suppress the performance degradation of the extinguishing agent layer over a long period of time.

[0017]

[10] In the extinguishing material according to any one of [1] to [9], the shortest distance from the plurality of extinguishing agent layers to the edge of the packaging material may be 5 mm or more. In this extinguishing material, since the shortest distance from the plurality of extinguishing agent layers to the edge of the packaging material is 5 mm or more, moisture that has permeated from the edge of the packaging material is unlikely to reach the extinguishing agent layer. Therefore, even when a deliquescent extinguishing agent is used, the performance degradation of the extinguishing agent layer can be suppressed for a long period of time.

[0018]

[11] In the extinguishing material according to any one of [1] to

[10] , the packaging material may have a perforation formed between adjacent extinguishing agent layers. Since the packaging material has a perforation formed between adjacent extinguishing agent layers, this extinguishing material can be easily cut between the adjacent extinguishing agent layers.

[0019]

[12] In the extinguishing material described in

[11] , the shortest distance from the extinguishing agent layer closest to the perforation to the perforation may be 5 mm or more. In this extinguishing material, since the shortest distance from the extinguishing agent layer closest to the perforation to the perforation is 5 mm or more, when the extinguishing material is cut along the perforation, the arrival of moisture that has permeated from the cut surface to the extinguishing agent layer can be delayed. Therefore, even when a deliquescent extinguishing agent is used, the performance degradation of the extinguishing agent layer can be suppressed for a long period of time.

[0020]

[13] The extinguishing material according to any one of [1] to

[12] may further comprise a plurality of base materials laminated on each of the plurality of extinguishing agent layers. Since this extinguishing material comprises a plurality of base materials laminated on each of the plurality of extinguishing agent layers, the handleability of the plurality of extinguishing agent layers is improved when the plurality of extinguishing agent layers are individually enclosed in a packaging material.

[0021]

[14] The extinguishing material according to any one of [1] to

[12] may further include a substrate laminated with the plurality of extinguishing agent layers. In this extinguishing material, the plurality of extinguishing agent layers are laminated with the substrate, which improves the ease of handling of the plurality of extinguishing agent layers when individually sealing the plurality of extinguishing agent layers in the packaging material. In addition, it is possible to prevent the positional relationship of the plurality of extinguishing agent layers from being shifted when individually sealing the plurality of extinguishing agent layers in the packaging material.

[0022]

[15] In the extinguishing material according to any one of [1] to

[14] , the packaging material may have a first film and a second film welded to the first film so as to sandwich the multiple extinguishing agent layers. Since the packaging material has the first film and the second film welded to the first film so as to sandwich the multiple extinguishing agent layers, the extinguishing material can be easily produced.

[0023]

[16] In the fire extinguishing material according to

[15] , the water vapor permeability of the first film and the second film is 10 g / m 2 In this fire extinguishing material, the water vapor permeability of the first film and the second film may be 10 g / m 2 / day or less, deterioration of the performance of the extinguishing agent layer can be suppressed for a long period of time even when a deliquescent extinguishing agent is used.

[0024]

[17] The fire extinguishing material roll according to the present invention is formed by winding the fire extinguishing material according to any one of [1] to

[16] into a roll shape. Since the fire extinguishing material roll is formed by winding the fire extinguishing material into a roll shape, the storage property and handling property of the fire extinguishing material are improved.

[0025]

[18] A method for producing an extinguishing material according to the present invention includes a step of forming a plurality of extinguishing agent layers containing an extinguishing agent, and a step of individually sealing the plurality of extinguishing agent layers in a packaging material while separating the plurality of extinguishing agent layers from one another. In this method for producing an extinguishing material, a fire extinguishing material capable of responding to a multi-stage fire can be produced by forming a plurality of extinguishing agent layers containing an extinguishing agent and individually sealing the plurality of extinguishing agent layers in a packaging material while separating the plurality of extinguishing agent layers from one another.

[0026]

[19] In the method for producing an extinguishing material described in

[18] , in the extinguishing agent layer forming step, a composition for forming an extinguishing agent layer may be applied onto a substrate, and the substrate and the composition for forming an extinguishing agent layer may be cut. In this method for producing an extinguishing material, a plurality of extinguishing agent layers can be easily formed by applying the composition for forming an extinguishing agent layer onto a substrate and cutting the composition for forming an extinguishing agent layer and the substrate.

[0027]

[20] In the method for producing a fire-extinguishing material described in

[19] , the packaging material may have a first film and a second film, and in the encapsulating step, the first film and the second film may be welded to each other so as to sandwich a plurality of fire-extinguishing agent layers between them. In this method for producing a fire-extinguishing material, by welding the first film and the second film to each other so as to sandwich the plurality of fire-extinguishing agent layers between them, the plurality of fire-extinguishing agent layers can be easily encapsulated individually.

[0028]

[21] In the method for producing an extinguishing material described in

[18] , in the extinguishing agent layer forming step, a composition for forming an extinguishing agent layer on a substrate may be intermittently applied, and in the encapsulating step, the substrate on which the composition for forming an extinguishing agent layer is intermittently applied may be encapsulated in a packaging material. In this method for producing an extinguishing material, a plurality of extinguishing agent layers can be formed by intermittently applying the composition for forming an extinguishing agent layer on a substrate. Then, by encapsulating the substrate on which the composition for forming an extinguishing agent layer is intermittently applied in a packaging material, a plurality of extinguishing agent layers can be easily encapsulated individually.

[0029]

[22] In the method for producing a fire extinguishing material described in

[21] , the packaging material may have a first film and a second film, and in the encapsulating step, the first film and the second film may be welded to each other so as to sandwich the base material to which the fire extinguishing layer-forming composition is intermittently applied between the first film and the second film. In this method for producing a fire extinguishing material, by welding the first film and the second film to each other so as to sandwich the base material to which the fire extinguishing layer-forming composition is intermittently applied between the first film and the second film, multiple fire extinguishing agent layers can be easily encapsulated individually.

[0030]

[23] The method for producing a fire extinguishing material according to any one of

[18] to

[22] may further include a winding step of winding the fire extinguishing material into a roll. In this method for producing a fire extinguishing material, a fire extinguishing material roll can be produced by winding the fire extinguishing material into a roll. Effect of the Invention

[0031] According to the present invention, it is possible to respond to a multi-stage fire. [Brief description of the drawings]

[0032] [Figure 1] FIG. 1 is a schematic perspective view showing a fire extinguishing material roll according to a first embodiment. [Diagram 2] FIG. 2 is a schematic plan view showing the fire extinguishing material according to the first embodiment. [Diagram 3] FIG. 3 is a schematic cross-sectional view taken along line III-III shown in FIG. [Figure 4]FIG. 4(a), FIG. 4(b) and FIG. 4(c) are schematic cross-sectional views for explaining the fire-extinguishing agent layer forming step. [Diagram 5] FIG. 5 is a schematic cross-sectional view for explaining the encapsulation step. [Figure 6] FIG. 6 is a schematic cross-sectional view of the fire extinguishing material according to the second embodiment. [Figure 7] FIG. 7 is a schematic cross-sectional view for explaining the fire-extinguishing agent layer forming step. [Figure 8] FIG. 8 is a schematic cross-sectional view for explaining the encapsulation step. [Figure 9] FIG. 9 is a schematic cross-sectional view of a fire-extinguishing material according to the third embodiment. [Figure 10] FIG. 10 is a schematic cross-sectional view for explaining the fire-extinguishing agent layer forming step. [Figure 11] FIG. 11 is a schematic cross-sectional view for explaining the sealing step. [Figure 12] FIG. 12 is a schematic plan view of the fire-extinguishing material according to the fourth embodiment. [Figure 13] FIG. 13 is a schematic plan view of a modified fire-extinguishing material. [Figure 14] FIG. 14 is a schematic plan view of a modified fire-extinguishing material. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the same or corresponding elements are designated by the same reference numerals, and duplicated description will be omitted.

[0034] [First embodiment] <Fire extinguishing roll> Fig. 1 is a schematic perspective view showing a fire extinguishing material roll according to a first embodiment. As shown in Fig. 1, a fire extinguishing material roll 1 according to this embodiment is formed by winding a fire extinguishing material 2 in a roll shape. The fire extinguishing material roll 1 may be formed by winding the fire extinguishing material 2 around a core 3, for example.

[0035] <Fire extinguishing material> FIG. 2 is a schematic plan view showing the extinguishing material according to the first embodiment. FIG. 3 is a schematic cross-sectional view taken along line III-III shown in FIG. 2. As shown in FIGS. 1 to 3, the extinguishing material 2 according to this embodiment includes a plurality of extinguishing agent layers 4 arranged at a distance from each other, a plurality of base materials 5 laminated on each of the plurality of extinguishing agent layers 4, and a packaging material 6 for individually enclosing the plurality of extinguishing agent layers 4. Enclosing the plurality of extinguishing agent layers 4 individually means sealing the plurality of extinguishing agent layers 4 individually. For this reason, in the extinguishing material 2, each of the plurality of extinguishing agent layers 4 is enclosed (sealed) separately (independently) from the other extinguishing agent layers 4 by the packaging material 6.

[0036] (Fire extinguishing agent layer) Each of the multiple extinguishing agent layers 4 (hereinafter, simply referred to as "extinguishing agent layer 4") is formed by molding a composition (extinguishing agent layer-forming composition) containing an extinguishing agent and a binder resin. By using the binder resin, the properties of the extinguishing agent are easily maintained, and the frequency of replacing the extinguishing material 2 can be reduced. The extinguishing agent layer-forming composition may further contain a liquid medium in addition to the extinguishing agent and the binder resin.

[0037] As the extinguishing agent, various organic salts and inorganic salts can be used alone or in mixture. Examples of the organic salt include potassium salts, sodium salts, and ammonium salts. Examples of the organic salt include potassium salts. Examples of the organic potassium salt include potassium carboxylates such as potassium acetate, potassium citrate (monopotassium citrate, dipotassium citrate, and tripotassium citrate), potassium tartrate, potassium lactate, potassium oxalate, and potassium maleate. Among these, potassium acetate or potassium citrate can be used from the viewpoint of usefulness in the negative catalytic effect of combustion. Potassium citrate can be selected from monopotassium citrate, dipotassium citrate, and tripotassium citrate, and the hydrates of each may be used.

[0038] Examples of inorganic salts include potassium salts and sodium salts. Potassium salts can be used as the inorganic salt. Examples of inorganic potassium salts include potassium tetraborate, potassium carbonate, potassium hydrogen carbonate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, etc. Among these, potassium hydrogen carbonate can be used from the viewpoint of its usefulness in the negative catalytic effect of combustion.

[0039] The extinguishing agent may contain an oxidizing compound, such as a chlorate salt, such as potassium chlorate, sodium chlorate, strontium chlorate, ammonium chlorate, or magnesium chlorate, which can generate an aerosol from each potassium salt upon receiving heat energy from a fire.

[0040] Thermoplastic resins and thermosetting resins can be used as the binder resin. Examples of the thermoplastic resin include polyolefin resins such as polypropylene resins, polyethylene resins, poly(1-)butene resins, and polypentene resins, polystyrene resins, acrylonitrile-butadiene-styrene resins, methyl methacrylate-butadiene-styrene resins, ethylene-vinyl acetate resins, ethylene-propylene resins, polycarbonate resins, polyphenylene ether resins, acrylic resins, polyamide resins, polyvinyl chloride resins, polyvinyl alcohol (PVA), and polyvinyl butyral (PVB). Examples of thermosetting resins include rubbers such as natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), 1,2-polybutadiene rubber (1,2-BR), styrene-butadiene rubber (SBR), chloroprene rubber (CR), nitrile rubber (NBR), butyl rubber (IIR), ethylene-propylene rubber (EPR, EPDM), chlorosulfonated polyethylene (CSM), acrylic rubber (ACM, ANM), epichlorohydrin rubber (CO, ECO), multi-vulcanized rubber (T), silicone rubber (Q), fluororubber (FKM, FZ), and urethane rubber (U), polyurethane resins, phenolic resins, epoxy resins, and polyvinyl ether (PMVE)-maleic anhydride resins. The binder resin may contain a curing agent component.

[0041] The fire extinguishing agent layer 4 may contain a colorant, an antioxidant, a flame retardant, an inorganic filler, etc., and from the viewpoint of property stability, may contain additives such as a surfactant, a silane coupling agent, an antiblocking agent, etc. These components can be appropriately selected depending on the composition of the fire extinguishing agent layer 4 and the type of binder resin.

[0042] The content of the extinguishing agent in the extinguishing agent layer 4 (based on the total mass of the extinguishing agent layer 4) can be 70% by mass or more and 97% by mass or less, or may be 80% by mass or more and 95% by mass or may be 85% by mass or more and 92% by mass or less. When the content of the extinguishing agent is 70% by mass or more, it is easy to achieve excellent fire extinguishing performance. When the content of the extinguishing agent is 97% by mass or less, it is easy to suppress deliquescence of the salt and to form a homogeneous extinguishing agent layer.

[0043] The thickness of the extinguishing agent layer 4 can be appropriately set depending on the amount of extinguishing agent to be blended. The thickness of the extinguishing agent layer 4 can be, for example, 1 mm or less, and may be 30 to 1000 μm, 100 to 500 μm, or 150 to 500 μm.

[0044] The liquid medium may be an organic solvent. The organic solvent may be a water-soluble solvent, for example, alcohols such as methanol, ethanol, isopropyl alcohol, n-propyl alcohol, etc.; ketones such as acetone, methyl ethyl ketone, etc.; glycols such as ethylene glycol, diethylene glycol, etc.; glycol ethers such as N-methylpyrrolidone (NMP), tetrahydrofuran, butyl cellosolve, etc. From the viewpoint that the extinguishing agent has deliquescent properties, the liquid medium may be an alcohol-based solvent, specifically, isopropyl alcohol.

[0045] The amount of the liquid medium may be appropriately adjusted depending on the method of using the composition for forming a fire extinguishing layer, but can be 40% by mass or more and 95% by mass or less based on the total amount of the composition for forming a fire extinguishing layer.

[0046] (base material) Each of the multiple base materials 5 (hereinafter, simply referred to as "base material 5") is preferably a resin base material, considering that the temperature of a flame is generally about 700°C to 900°C. Examples of the material of the base material 5 include polyolefin (LLDPE, PP, COP, CPP, etc.), polyester (PET, etc.), fluororesin (PTFE, ETFE, EFEP, PFA, FEP, PCTFE, etc.), PVC, PVA, acrylic resin, epoxy resin, polyamide, polyimide, etc. These resins can be perforated by heat. In addition, by selecting a transparent material as the base material 5, it becomes easier to inspect the appearance of the fire extinguishing material 2 and to check the replacement time. The base material 5 may contain the above-mentioned fire extinguishing agent. From the viewpoint of adjusting the water vapor permeability, the base material 5 may be provided with a vapor deposition layer (alumina vapor deposition layer or silica vapor deposition layer) having a water vapor barrier property.

[0047] The thickness and breaking strength of the substrate 5 can be appropriately selected according to the amount of heat, impact, allowable space, etc., at the time of fire outbreak. For example, a thick substrate 5 can provide strength and rigidity, and can provide a highly flat form, making handling easy. A thin substrate 5 can provide the fire extinguishing material 2 in a narrow space, and can shorten the time to start extinguishing the fire because a hole is formed in a short time. The thickness of the substrate can be, for example, 4.5 μm or more and 100 μm or less, and may be 12 μm or more and 50 μm or less. The substrate 5 may be a laminate of a plurality of substrates. The substrate 5 and the fire extinguishing agent layer 4 may be bonded by an adhesive layer.

[0048] (packaging material) The packaging material 6 is composed of an encapsulation film that individually encapsulates the multiple extinguishing agent layers 4. The packaging material 6 is formed in a long shape (tape shape). The direction in which the packaging material 6 extends in a long shape is called the longitudinal direction D1, and the direction perpendicular to the longitudinal direction D1 is called the width direction D2. The packaging material 6 extends in a sheet shape along the longitudinal direction D1 and the width direction D2.

[0049] The packaging material 6 has a first film 7 and a second film 8. The first film 7 and the second film 8 are welded to each other so as to sandwich the multiple extinguishing agent layers 4 and the multiple base materials 5. That is, the first film 7 is disposed on the multiple extinguishing agent layers 4 side of the multiple base materials 5 and is welded to the multiple extinguishing agent layers 4. The second film 8 is disposed on the multiple base materials 5 side of the multiple extinguishing agent layers 4 and is welded to the multiple base materials 5. The first film 7 and the second film 8 are welded to each other between the multiple extinguishing agent layers 4 (between the multiple base materials 5) and outside the multiple extinguishing agent layers 4 (outside the multiple base materials 5). As a result, the packaging material 6 individually encapsulates the multiple extinguishing agent layers 4.

[0050] Any resin film can be used as the first film 7 and the second film 8. Examples of the resin used for the first film 7 and the second film 8 include polyolefin resin, polyester resin, fluororesin, vinyl resin, acrylic resin, epoxy resin, polyamide, polyimide, urethane resin, styrene-based resin, polycarbonate, ketone resin, sulfone-based resin, and cellulose-based resin.

[0051] The first film 7 and the second film 8 desirably have water vapor barrier properties, and the water vapor permeability (based on JIS K 7129 under conditions of 40°C / 90%RH) can be 10 g / m2 / day or less, and may be 1 g / m2 / day or less. From the viewpoint of adjusting the water vapor permeability, examples of the first film 7 and the second film 8 having water vapor barrier properties include a polyester resin layer (e.g., a PET layer) having an inorganic metal oxide vapor deposition layer such as an alumina vapor deposition layer or a silica vapor deposition layer, and a metal foil such as an aluminum foil. When the water vapor barrier layer has a metal oxide vapor deposition layer, the metal oxide vapor deposition layer may face the fire extinguishing agent layer 4 side.

[0052] The packaging material 6 individually encloses a plurality of extinguishing agent layers 4 so that the plurality of extinguishing agent layers 4 are arranged in the longitudinal direction D1 and the width direction D2. That is, the plurality of extinguishing agent layers 4 are arranged in the longitudinal direction D1 and the width direction D2 so as to form a lattice (checkerboard) shape. The number of extinguishing agent layers 4 arranged in the longitudinal direction D1 and the width direction D2 is not particularly limited.

[0053] From the viewpoint of preventing the adjacent extinguishing agent layers 4 from reacting with each other and preventing the performance of the extinguishing agent layers 4 from deteriorating over a long period of time, the packaging material 6 may individually enclose a plurality of extinguishing agent layers 4 such that the shortest distance d1 between adjacent extinguishing agent layers 4 is 10 mm or more. In other words, the shortest distance d1 between adjacent extinguishing agent layers 4 may be 10 mm or more. The shortest distance d1 between adjacent extinguishing agent layers 4 may be 20 mm or more.

[0054] In addition, from the viewpoint of suppressing deterioration of the performance of the extinguishing agent layers over a long period of time, the packaging material 6 may individually enclose the multiple extinguishing agent layers 4 such that the shortest distance d2 from the multiple extinguishing agent layers 4 to the edge 6a of the packaging material 6 is 5 mm or more. In other words, the shortest distance d2 from the multiple extinguishing agent layers 4 to the edge 6a of the packaging material 6 may be 5 mm or more. The shortest distance d2 from the multiple extinguishing agent layers 4 to the edge 6a of the packaging material 6 may be 10 mm or more.

[0055] <Fire extinguishing material manufacturing method> Next, a description will be given of a method for producing the extinguishing material 2. The method for producing the extinguishing material 2 includes an extinguishing agent layer forming step of forming a plurality of extinguishing agent layers 4 containing an extinguishing agent, and an encapsulating step of separating the plurality of extinguishing agent layers 4 from one another and individually encapsulating the plurality of extinguishing agent layers 4 in the packaging material 6. The method for producing the extinguishing material 2 may also include a winding step of winding the extinguishing material 2 in which the plurality of extinguishing agent layers 4 are individually encapsulated in the packaging material 6 into a roll.

[0056] FIG. 4(a), FIG. 4(b) and FIG. 4(c) are schematic cross-sectional views for explaining the extinguishing agent layer forming step. As shown in FIG. 4(a), in the extinguishing agent layer forming step, the composition 4a for forming the extinguishing agent layer 4 is applied onto the substrate 5a. The composition 4a for forming the extinguishing agent layer can be applied by, for example, a wet coating method. Examples of the wet coating method include a comma coating method, a dip coating method, a curtain coating method, a spin coating method and a sponge roll method. After the composition 4a for forming the extinguishing agent layer is applied onto the substrate 5a, the composition 4a for forming the extinguishing agent layer is dried. The drying temperature of the composition 4a for forming the extinguishing agent layer is not particularly limited, but may be, for example, 60 to 100° C. When the composition 4a for forming the extinguishing agent layer is dried, the composition 4a for forming the extinguishing agent layer and the substrate 5a are cut into an arbitrary shape into a plurality of sheets as shown in FIG. 4(b) and FIG. 4(c). The extinguishing agent layer forming composition 4a and the substrate 5a can be cut by, for example, slitting, cutting, or punching. As a result, a plurality of extinguishing agent layers 4 laminated on a plurality of substrates 5 are formed.

[0057] 5 is a schematic cross-sectional view for explaining the encapsulation step. As shown in FIG. 5, in the encapsulation step, the first film 7 and the second film 8 are fused together so that the extinguishing agent layers 4 are sandwiched between the first film 7 and the second film 8 while the extinguishing agent layers 4 are spaced apart from each other. This fusion can be performed, for example, by using a roll-to-roll laminator or the like to sandwich the extinguishing agent layers 4 between the first film 7 and the second film 8 from both the extinguishing agent layers 4 side and the base material 5 side, and fusing the first film 7 and the second film 8 by a method such as thermocompression bonding. As a result, the extinguishing material 2 in which the extinguishing agent layers 4 are separated from each other and the extinguishing agent layers 4 are individually encapsulated in the packaging material 6 is formed.

[0058] In the winding step, the extinguishing material 2 is wound around the core 3 using the roll-to-roll laminator or the like used in the encapsulating step. In this way, the extinguishing material roll 1 is formed.

[0059] As described above, in the extinguishing material 2 according to this embodiment, since the plurality of extinguishing agent layers 4 arranged at a distance from each other are individually enclosed in the packaging material 6, it is possible to suppress a chain reaction of the extinguishing agent between the plurality of extinguishing agent layers 4. In other words, even if one extinguishing agent layer 4 reacts and is consumed, the other extinguishing agent layers 4 can be left in an unreacted state. In addition, even if a portion of the packaging material 6 enclosing one of the extinguishing agent layers 4 melts and a hole is formed, the other extinguishing agent layers 4 can be left in a state of being enclosed in the packaging material 6. As a result, the plurality of extinguishing agent layers 4 can be reacted in multiple stages, so that it is possible to respond to a multi-stage fire. In other words, it is possible to perform fire extinguishing in multiple stages.

[0060] Furthermore, in the fire extinguishing material 2, since the fire extinguishing agent contains at least one of an organic salt and an inorganic salt, appropriate fire extinguishing performance can be obtained.

[0061] Furthermore, since the extinguishing agent of the fire extinguishing material 2 contains a compound having an oxidizing effect, it is possible to generate an aerosol by receiving thermal energy from a fire.

[0062] Furthermore, since the extinguishing agent of the fire extinguishing material 2 contains potassium citrate and potassium chlorate, appropriate fire extinguishing performance can be obtained.

[0063] Moreover, in this fire extinguishing material 2, since the fire extinguishing agent layer 4 contains a binder, the properties of the fire extinguishing agent are easily maintained, and the replacement frequency of the fire extinguishing material 2 can be reduced.

[0064] In addition, in this extinguishing material 2, since the content of the extinguishing agent in the extinguishing agent layer 4 is 70 mass% or more, 80 mass% or more, or 85 mass% or more, it is easy to achieve excellent fire extinguishing performance. Furthermore, since the content of the extinguishing agent in the extinguishing agent layer 4 is 97 mass% or less, 95 mass% or less, or 92 mass% or less, it is easy to suppress deliquescence of the extinguishing agent and to form a homogeneous extinguishing agent layer 4.

[0065] In addition, in this extinguishing material 2, since a plurality of extinguishing agent layers 4 are arranged in the longitudinal direction D1 of the packaging material 6, it is possible to respond to a multi-stage fire in the longitudinal direction D1 of the packaging material 6. In addition, since the extinguishing material 2 can be cut so as to be divided in the longitudinal direction D1 for use, the extinguishing material 2 can be made into various shapes, and the degree of freedom in installation is also improved.

[0066] In addition, in this extinguishing material 2, the extinguishing agent layer 4 is also arranged in the width direction D2 of the packaging material 6, so that it can respond to a multi-stage fire in the width direction D2 of the packaging material 6. In addition, since the extinguishing material 2 can be cut so as to be divided in the width direction D2 for use, the extinguishing material 2 can be made into various shapes, and the degree of freedom in installation is also improved.

[0067] In addition, in this extinguishing material 2, the shortest distance d1 between adjacent extinguishing agent layers 4 is 10 mm or more or 20 mm or more, so that the adjacent extinguishing agent layers 4 can be prevented from reacting with each other. In addition, when the extinguishing material 2 is cut between adjacent extinguishing agent layers 4, the arrival of moisture permeating from the cut surface to the extinguishing agent layer 4 can be delayed. In particular, by cutting the extinguishing material 2 at the center between adjacent extinguishing agent layers 4, the distance from the cut surface to the extinguishing agent layer 4 can be set to 5 mm or more or 10 mm or more, so that the arrival of moisture permeating from the cut surface to the extinguishing agent layer 4 can be further delayed. Therefore, even when a deliquescent extinguishing agent is used, the performance degradation of the extinguishing agent layer 4 can be suppressed for a long period of time.

[0068] In addition, in this extinguishing material 2, the shortest distance d2 from the multiple extinguishing agent layers 4 to the edge 6a of the packaging material 6 is 5 mm or more or 10 mm or more, so that moisture that has permeated from the edge 6a of the packaging material 6 is less likely to reach the extinguishing agent layers 4. Therefore, even when a deliquescent extinguishing agent is used, the performance degradation of the extinguishing agent layers 4 can be suppressed for a long period of time.

[0069] In addition, since this extinguishing material 2 has a plurality of base materials 5 laminated on each of the plurality of extinguishing agent layers 4, the handleability of the plurality of extinguishing agent layers 4 is improved when the plurality of extinguishing agent layers 4 are individually enclosed in the packaging material 6.

[0070] Furthermore, in this fire extinguishing material 2, the packaging material 6 has the first film 7 and the second film 8 welded to the first film 7 so as to sandwich the multiple fire extinguishing agent layers 4, so that the fire extinguishing material 2 can be easily manufactured.

[0071] In addition, in this fire extinguishing material 2, the water vapor permeability of the first film 7 and the second film 8 is 10 g / m 2 / day or less or 1g / m 2 / day or less, even when a deliquescent fire extinguishing agent is used, deterioration in the performance of the fire extinguishing agent layer 4 can be suppressed for a long period of time.

[0072] In the fire extinguishing material roll 1 according to this embodiment, the above-mentioned fire extinguishing material 2 is wound in a roll shape, so that the storage property and handling property of the fire extinguishing material 2 are improved.

[0073] In the manufacturing method of the extinguishing material according to this embodiment, a plurality of extinguishing agent layers 4 containing an extinguishing agent are formed, and the plurality of extinguishing agent layers 4 are spaced apart from one another and individually enclosed in a packaging material 6, thereby making it possible to manufacture an extinguishing material 2 capable of responding to a multi-stage fire.

[0074] Moreover, in this manufacturing method for the fire extinguishing material, the fire extinguishing layer forming composition 4a is applied onto the substrate 5a, and the fire extinguishing layer forming composition 4a and the substrate 5a are cut, whereby multiple fire extinguishing layers 4 can be easily formed.

[0075] Furthermore, in this manufacturing method for the fire extinguishing material, the first film 7 and the second film 8 are welded together so that the first film 7 and the second film 8 sandwich the multiple fire extinguishing agent layers 4, making it easy to encapsulate the multiple fire extinguishing agent layers 4 individually.

[0076] Moreover, in this method for producing the fire extinguishing material, the fire extinguishing material roll 1 can be produced by winding the fire extinguishing material 2 into a roll.

[0077] [Second embodiment] Next, a second embodiment will be described. The second embodiment is basically the same as the first embodiment, and differs from the first embodiment only in a part of the structure of the fire extinguishing material and a part of the manufacturing method of the fire extinguishing material. Therefore, only the differences from the first embodiment will be described below, and the same descriptions as those of the first embodiment will be omitted.

[0078] <Fire extinguishing material> Fig. 6 is a schematic cross-sectional view of a fire extinguishing material according to a second embodiment. As shown in Fig. 6, a fire extinguishing material 2A according to this embodiment includes a plurality of fire extinguishing agent layers 4 arranged at a distance from each other, a base material 5A laminated on the plurality of fire extinguishing agent layers 4, and a packaging material 6 that individually encapsulates the plurality of fire extinguishing agent layers 4. That is, in the fire extinguishing material 2A, a plurality of fire extinguishing agent layers 4 are laminated on one base material 5A, and the plurality of fire extinguishing agent layers 4 are maintained in a state of being separated from each other on one base material 5A.

[0079] <Fire extinguishing material manufacturing method> Next, a manufacturing method of the extinguishing material 2A will be described. The manufacturing method of the extinguishing material 2A includes an extinguishing agent layer forming step of forming a plurality of extinguishing agent layers 4 containing an extinguishing agent, and an encapsulating step of separately encapsulating the plurality of extinguishing agent layers 4 in the packaging material 6 while separating the plurality of extinguishing agent layers 4 from each other. The manufacturing method of the extinguishing material 2A may also include a winding step of winding the extinguishing material 2A in which the plurality of extinguishing agent layers 4 are individually encapsulated in the packaging material 6 into a roll shape.

[0080] FIG. 7 is a schematic cross-sectional view for explaining the extinguishing agent layer forming step. As shown in FIG. 7, in the extinguishing agent layer forming step, the composition 4a for forming the extinguishing agent layer 4 is intermittently applied onto the substrate 5A. The intermittent application of the composition 4a for forming the extinguishing agent layer can be performed, for example, by controlling the coating port by die coating, intermittent operation of liquid delivery by die coating, gravure printing, screen printing, etc. After the composition 4a for forming the extinguishing agent layer is intermittently applied onto the substrate 5A, the composition 4a for forming the extinguishing agent layer is dried. The drying temperature of the composition 4a for forming the extinguishing agent layer is not particularly limited, but can be, for example, 60 to 100° C. As a result, a plurality of extinguishing agent layers 4 of any shape that are spaced apart from each other are formed on the substrate 5A.

[0081] FIG. 8 is a schematic cross-sectional view for explaining the encapsulation step. As shown in FIG. 8, in the encapsulation step, the base material 5A on which the composition for forming an extinguishing agent layer 4a is intermittently applied is encapsulated in the packaging material 6. That is, the first film 7 and the second film 8 are welded together so that the base material 5A on which the composition for forming an extinguishing agent layer 4a is intermittently applied 4b is sandwiched between the first film 7 and the second film 8. This welding can be performed, for example, by using a roll-to-roll laminator or the like to sandwich the multiple extinguishing agent layers 4 and the base material 5A between the first film 7 and the second film 8 from both the multiple extinguishing agent layers 4 side and the base material 5A side, and welding the first film 7 and the second film 8 by a method such as thermocompression bonding. As a result, the multiple extinguishing agent layers 4 are separated from each other, and the extinguishing material 2A in which the multiple extinguishing agent layers 4 are individually enclosed in the packaging material 6 is formed.

[0082] As described above, in the extinguishing material 2A according to this embodiment, the multiple extinguishing agent layers 4 are laminated on the base material 5A, which improves the ease of handling the multiple extinguishing agent layers 4 when the multiple extinguishing agent layers 4 are individually enclosed in the packaging material 6. In addition, when the multiple extinguishing agent layers 4 are individually enclosed in the packaging material 6, it is possible to prevent the positional relationship of the multiple extinguishing agent layers 4 from being shifted.

[0083] In the method for producing a fire extinguishing material according to this embodiment, the fire extinguishing layer-forming composition 4a is intermittently applied onto the substrate 5A, thereby forming a plurality of fire extinguishing layers 4. Then, the substrate 5A to which the fire extinguishing layer-forming composition 4a is intermittently applied is enclosed in a packaging material 6, whereby the plurality of fire extinguishing layers 4 can be easily enclosed individually.

[0084] Furthermore, in this manufacturing method for the fire extinguishing material, the first film 7 and the second film 8 are welded together so as to sandwich the base material 5A to which the fire extinguishing agent layer-forming composition 4a is intermittently applied, whereby multiple fire extinguishing agent layers 4 can be easily encapsulated individually.

[0085] [Third embodiment] Next, a third embodiment will be described. The third embodiment is basically the same as the first embodiment, and differs from the first embodiment only in a part of the structure of the fire extinguishing material and a part of the manufacturing method of the fire extinguishing material. Therefore, only the differences from the first embodiment will be described below, and the same descriptions as those of the first embodiment will be omitted.

[0086] <Fire extinguishing material> Fig. 9 is a schematic cross-sectional view of a fire extinguishing material according to a third embodiment. As shown in Fig. 9, a fire extinguishing material 2B according to this embodiment includes a plurality of fire extinguishing agent layers 4 arranged apart from each other, and a packaging material 6 that individually encapsulates the plurality of fire extinguishing agent layers 4. That is, in the fire extinguishing material 2B, no substrate is provided, and the plurality of fire extinguishing agent layers 4 are directly encapsulated in the packaging material 6.

[0087] <Fire extinguishing material manufacturing method> FIG. 10 is a schematic cross-sectional view for explaining the extinguishing agent layer forming step. As shown in FIG. 10, in the extinguishing agent layer forming step, the extinguishing agent layer forming composition 4a for forming the extinguishing agent layer 4 is intermittently coated on the second film 8. The intermittent coating of the extinguishing agent layer forming composition 4a can be performed, for example, by controlling the coating port by die coating, intermittent operation of liquid delivery by die coating, gravure printing, screen printing, etc. After the extinguishing agent layer forming composition 4a is intermittently coated on the second film 8, the extinguishing agent layer forming composition 4a is dried. The drying temperature of the extinguishing agent layer forming composition 4a is not particularly limited, but can be, for example, 60 to 100° C. As a result, a plurality of extinguishing agent layers 4 of any shape separated from each other are formed on the second film 8.

[0088] FIG. 11 is a schematic cross-sectional view for explaining the encapsulation step. As shown in FIG. 11, in the encapsulation step, a plurality of extinguishing agent layers 4 are individually encapsulated between a first film 7 and a second film 8 to which a composition for forming an extinguishing agent layer 4a is intermittently applied. That is, the first film 7 and the second film 8 are fused together so that the plurality of extinguishing agent layers 4 formed on the second film 8 are sandwiched between the first film 7 and the second film 8. This fusion can be performed, for example, by using a roll-to-roll laminator or the like to overlap the first film 7 on the surface of the second film 8 on the side of the plurality of extinguishing agent layers 4, and fusing the first film 7 and the second film 8 by a method such as thermocompression bonding. As a result, the plurality of extinguishing agent layers 4 are separated from each other, and the extinguishing material 2B in which the plurality of extinguishing agent layers 4 are individually encapsulated in the packaging material 6 is formed.

[0089] [Fourth embodiment] Next, a fourth embodiment will be described. The fourth embodiment is basically the same as the first embodiment, and differs from the first embodiment only in that the extinguishing material has perforations. Therefore, only the differences from the first embodiment will be described below, and the same descriptions as the first embodiment will be omitted.

[0090] <Fire extinguishing material> FIG. 12 is a schematic plan view of the extinguishing material according to the fourth embodiment. As shown in FIG. 14, the extinguishing material 2C according to this embodiment includes a plurality of extinguishing agent layers 4 arranged at a distance from each other, a plurality of base materials 5 (see FIG. 3) laminated on each of the plurality of extinguishing agent layers 4, and a packaging material 6C that individually encapsulates the plurality of extinguishing agent layers 4. The packaging material 6C has a perforation 9C formed between adjacent extinguishing agent layers 4. The perforation 9C is a cut line that intermittently cuts the packaging material 6C, and serves as an auxiliary line when cutting the extinguishing material 2C. The perforation 9C is formed so as to pass through the center of the adjacent extinguishing agent layers 4. The shortest distance d3 from the extinguishing agent layer 4 closest to the perforation 9C to the perforation 9C can be, for example, 5 mm or more, and may be 10 mm or more.

[0091] The perforations 9C may be formed between all adjacent extinguishing agent layers 4, or may be formed between some adjacent extinguishing agent layers 4. The packaging material 6C may have one or more perforations 9C extending in the longitudinal direction D1, may have one or more perforations 9C extending in the width direction D2, or may have both. When this perforation is applied to the extinguishing material 2A of the second embodiment, the perforations may be formed not only in the packaging material 6 but also in the base material 5A.

[0092] When producing the fire extinguishing material 2C, for example, the perforations 9C can be formed in the packaging material 6C after the fire extinguishing agent layer forming step and the enclosing step and before the winding step.

[0093] As described above, in the fire extinguishing material 2C of this embodiment, the packaging material 6C has perforations 9C formed between adjacent fire extinguishing agent layers 4, making it easier to cut the fire extinguishing material 2C between adjacent fire extinguishing agent layers 4.

[0094] In addition, since the shortest distance d3 from the extinguishing agent layer 4 closest to the perforation 9C to the perforation 9C is 5 mm or more or 10 mm or more, when the extinguishing material 2C is cut along the perforation 9C, it is possible to slow down the arrival of moisture that has permeated from the cut surface to the extinguishing agent layer 4. Therefore, even when a deliquescent extinguishing agent is used, it is possible to suppress the performance degradation of the extinguishing agent layer 4 over a long period of time.

[0095] Although an embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and may be modified or applied to other things without departing from the gist of the claims.

[0096] For example, in the above embodiment, the extinguishing agent layers are arranged in both the longitudinal direction D1 and the width direction D2, but the arrangement of the extinguishing agent layers is not particularly limited. For example, as in the extinguishing material 2D shown in FIG. 13, the extinguishing agent layers 4D may be arranged only in the longitudinal direction D1. Also, as in the extinguishing material 2E shown in FIG. 14, the extinguishing agent layers 4D may be arranged in a staggered pattern. FIGS. 13 and 14 are schematic plan views of extinguishing materials of modified examples.

[0097] In the above embodiment, the extinguishing agent layer is formed in a rectangular shape. However, the shape of the extinguishing agent layer is not particularly limited. For example, as in the extinguishing material 2E shown in FIG. 14, the extinguishing agent layer 4E may be formed in a circular shape. EXAMPLES

[0098] The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.

[0099] <Example 1> (Fire extinguishing agent layer) A fire extinguishing agent was prepared by crushing potassium chlorate and tripotassium citrate in an agate mortar to an average particle size D50 of 12 μm or less. This fire extinguishing agent was mixed with various materials in the following compounding ratios to obtain a composition for forming a fire extinguishing agent layer. Extinguishing agent components: 87 parts by weight of a mixture of potassium chlorate and tripotassium citrate Binder resin: 81 parts by weight of polyvinyl butyral resin solution (a solution obtained by dissolving 11 parts by weight of polyvinyl butyral resin in 80 parts by weight of ethanol and 9 parts by weight of isopropyl alcohol) Silane coupling agent: X-12-1287A (Shin-Etsu Chemical Co., Ltd.) 4 parts by mass Liquid medium: ethanol 87 parts by weight

[0100] The composition for forming a fire extinguishing agent layer was coated on one side of a polyethylene terephthalate (PET) substrate (product name: E7002, manufactured by Toyobo Co., Ltd., thickness 50 μm) using a comma coater so that the dry film thickness was 150 μm, and the composition was then processed into a sheet shape of 85 mm x 128 mm using a slitter and a cutter.

[0101] (Enclosure film) Epoxy-urethane synthetic adhesives AD-393 and CAT-EP5 manufactured by Toyo Ink Mfg. Co., Ltd., and isopropyl alcohol as a dilution solvent were prepared. These were mixed in a ratio of 15:1:25.7 and then stirred for 1 minute to produce a dry lamination adhesive with a solids content of 20% by mass.

[0102] The above adhesive for dry lamination was applied to the deposition layer side of GL-RD (alumina deposition polyester film manufactured by Toppan Printing Co., Ltd.) using a dry laminator, and dried in a drying oven set at 80°C to obtain a dry coating amount of 2 g / m. 2 Next, the corona-treated surface of a non-oriented polypropylene film MC-S (manufactured by Mitsui Chemicals Tohcello Inc., thickness 30 μm) was attached to the GL-ARH from the second feed of the dry laminator to prepare an encapsulation film.

[0103] (Encapsulation of fire extinguishing agent layer) The front and back extinguishing agent layer encapsulation films were set on the unwinding section of a laminator (a roll winding device attached to a VA-900 manufactured by Taisei Laminator Co., Ltd.), and the substrates coated with the extinguishing agent layer processed into sheets were arranged with a gap of 10 mm between each other, laminated with the encapsulation film under the following conditions, and thermocompression laminated to obtain the extinguishing material. Lamination roll temperature: 120℃ Nip pressure: 0.3MPa Conveying speed: 3m / min Encapsulating film unwinding tension: 6.5N / 100mm · Winding tension: 14N / 100mm

[0104] The extinguishing material after lamination was wound into a roll to obtain the extinguishing material roll of Example 1.

[0105] <Example 2> A rotary blade was used to perform perforation on the fire extinguishing material roll of Example 1. The perforations were formed at a position passing through the center between adjacent fire extinguishing agent layers, with the cut portion being 2.7 mm and the uncut portion being 1 mm.

[0106] <Example 3> The composition for forming a fire extinguishing agent layer of Example 1 was applied to one side of a polyethylene terephthalate (PET) substrate (product name: E7002, manufactured by Toyobo Co., Ltd., thickness 50 μm) so that a fire extinguishing agent layer formed a pattern of 85 mm × 128 mm by utilizing control of the coating port by a die coater and intermittent operation of the liquid feed. The dry coating amount was the same as in Example 1. In addition, the pattern was formed so that the uncoated portion around the periphery of the fire extinguishing agent layer was 10 mm wide.

[0107] The fire extinguishing material roll of Example 3 was produced by overlapping the substrate on which the fire extinguishing agent layer was pattern-coated with the front and back films for enclosing the fire extinguishing agent layer, and laminating them using a laminator in the same manner as in Example 1, except that the laminating roll temperature was 180°C.

[0108] <Example 4> A fire extinguishing material roll of Example 4 was produced in the same manner as in Example 3, except that intermittent coating was performed directly on a film for enclosing a fire extinguishing agent instead of on a substrate.

[0109] <Example 5> A fire extinguishing material roll of Example 5 was produced in the same manner as in Example 1, except that the substrates coated with the extinguishing agent layer processed into sheets were arranged with a gap of 2 mm between each other.

[0110] <Example 6> A fire extinguishing material roll of Example 6 was produced in the same manner as in Example 1, except that the substrates coated with the extinguishing agent layer processed into sheets were arranged with a gap of 4 mm between each other.

[0111] <Example 7> A fire extinguishing material roll of Example 7 was produced in the same manner as in Example 1, except that the substrates coated with the extinguishing agent layer processed into sheets were arranged with a gap of 8 mm between each other.

[0112] <Example 8> A fire extinguishing material roll of Example 8 was produced in the same manner as in Example 1, except that the substrates coated with the extinguishing agent layer processed into sheets were arranged with a gap of 20 mm between each other.

[0113] <Comparative Example 1> The substrate coated with the extinguishing agent layer processed into a sheet form in Example 1 was left exposed with the extinguishing agent layer unencapsulated in an encapsulation film to form the extinguishing material roll in Comparative Example 1.

[0114] <Property stability evaluation> In the fire extinguishing material rolls of Examples 1 to 8 and Comparative Example 1, an evaluation sample in a state in which an 85 mm x 128 mm fire extinguishing agent layer was enclosed in an encapsulation film on all four sides was cut out from the fire extinguishing material roll, and the evaluation sample was left to stand for 7 days under 85°C / 85% RH conditions, and the total light transmittance change amount △ was calculated from the difference in the total light transmittance of the fire extinguishing agent layer before and after storage. A haze meter (BYK-Gardner Haze-Guard Plus, manufactured by BYK Co., Ltd.) was used to measure the total light transmittance. The measurement was performed in a state in which the fire extinguishing agent layer was fixed so that the light entering the integrating sphere from the light source passes through the fire extinguishing agent layer. When moisture absorption (deliquescence) occurs and the property stability decreases, the transparency of the fire extinguishing material increases, so the degree of deliquescence, that is, the property stability, was evaluated by checking this change amount △. The evaluation was performed based on the following criteria. The evaluation results are shown in Table 1. Change Δ = Total light transmittance value after storage - Total light transmittance value before storage A: Change Δ is less than 70 B: The change Δ was less than 70, but transparency was observed at the edge of the extinguishing agent layer. C: Change Δ is 70 or more

[0115] [Table 1]

[0116] The extinguishing material rolls of Examples 1 to 8 and Comparative Example 1 could all be used by cutting out the extinguishing agent layer to any size. The extinguishing materials of Examples 1 to 8 were all rated A or B, but the extinguishing materials of Examples 1 to 4 and 8 had a wide gap between the extinguishing agent layers of 10 mm or more, so when the extinguishing material was cut out, the width of the encapsulation films that were in close contact with each other was wide, and water was less likely to penetrate under high temperature and high humidity conditions, resulting in particularly excellent property stability. On the other hand, in Comparative Example 1, deliquescence progressed because the extinguishing agent was not encapsulated in the encapsulation film, resulting in significantly poor property stability. [Explanation of symbols]

[0117] 1...fire extinguishing material roll, 2, 2A, 2B, 2C, 2D, 2E...fire extinguishing material, 3...core, 4, 4D, 4E...fire extinguishing agent layer, 4a...composition for forming fire extinguishing agent layer, 5, 5A...substrate, 5a...substrate, 6, 6C...packaging material, 6a...edge, 7...first film, 8...second film, 9C...perforation, D1...longitudinal direction, D2...width direction, d1...shortest distance, d2...shortest distance, d3...shortest distance.

Claims

1. A plurality of extinguishing agent layers each containing an extinguishing agent and spaced apart from one another; and a packaging material that individually encapsulates the plurality of extinguishing agent layers. Fire extinguishing material.

2. The extinguishing agent includes at least one of an organic salt and an inorganic salt. The fire extinguishing material according to claim 1.

3. The extinguishing agent comprises a compound having an oxidizing effect. The fire extinguishing material according to claim 2.

4. The extinguishing agent includes potassium citrate and potassium chlorate. The fire extinguishing material according to claim 1.

5. Each of the plurality of fire extinguishing agent layers includes a binder. The fire extinguishing material according to claim 1.

6. The content of the extinguishing agent in the extinguishing agent layer is 70% by mass or more and 97% by mass or less. The fire extinguishing material according to claim 1.

7. The packaging material is formed into an elongated shape, The plurality of extinguishing agent layers are arranged in the longitudinal direction of the packaging material. The fire extinguishing material according to claim 1.

8. The plurality of extinguishing agent layers are also arranged in a width direction of the packaging material perpendicular to the longitudinal direction. The fire extinguishing material according to claim 7.

9. The shortest distance between adjacent extinguishing agent layers is 10 mm or more. The fire extinguishing material according to claim 1.

10. The shortest distance from the plurality of extinguishing agent layers to the edge of the packaging material is 5 mm or more. The fire extinguishing material according to claim 1.

11. The packaging material has perforations formed between adjacent extinguishing agent layers. The fire extinguishing material according to claim 1.

12. The shortest distance from the extinguishing agent layer closest to the perforation to the perforation is 5 mm or more; The fire extinguishing material according to claim 11.

13. Further comprising a plurality of substrates laminated on each of the plurality of extinguishing agent layers, The fire extinguishing material according to claim 1.

14. Further comprising a substrate laminated to the plurality of extinguishing agent layers; The fire extinguishing material according to claim 1.

15. The packaging material includes a first film and a second film welded to the first film so as to sandwich the plurality of fire extinguishing agent layers. The fire extinguishing material according to claim 1.

16. The water vapor permeability of the first film and the second film is 10 g / m ２ / day or less, The fire extinguishing material according to claim 15.

17. The fire extinguishing material according to claim 1 is wound into a roll. Fire extinguishing material roll.

18. a fire extinguishing agent layer forming step of forming a plurality of fire extinguishing agent layers containing a fire extinguishing agent; and an encapsulation step of encapsulating the plurality of extinguishing agent layers in a packaging material while separating the plurality of extinguishing agent layers from each other. Manufacturing method of fire extinguishing material.

19. In the extinguishing agent layer forming step, a composition for forming the extinguishing agent layer is applied onto a substrate, and the substrate and the composition for forming the extinguishing agent layer are cut. A method for producing the fire extinguishing material according to claim 18.

20. the packaging material includes a first film and a second film; In the enclosing step, the first film and the second film are welded to each other so as to sandwich the plurality of fire-extinguishing agent layers between the first film and the second film. A method for producing the fire extinguishing material according to claim 19.

21. In the extinguishing agent layer forming step, a composition for forming the extinguishing agent layer is intermittently applied onto a substrate, In the encapsulation step, the base material to which the fire extinguishing agent layer forming composition is intermittently coated is encapsulated in the packaging material. A method for producing the fire extinguishing material according to claim 18.

22. the packaging material includes a first film and a second film; In the encapsulating step, the first film and the second film are fused together so as to sandwich the base material on which the fire extinguishing agent layer forming composition is intermittently applied. A method for producing the fire extinguishing material according to claim 21.

23. The method further includes a winding step of winding the fire extinguishing material into a roll. A method for producing the fire extinguishing material according to claim 18.

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