Fire extinguisher

Abstract

To provide a fire extinguishing body that exhibits excellent stability in the properties of deliquescent fire extinguishing agents and can prevent the occurrence and spread of fires. [Solution] This disclosure relates to a fire extinguishing body comprising a packaging bag formed from a substrate including a resin layer, and a deliquescent fire extinguishing agent sealed inside the packaging bag, wherein the packaging bag has a sealing portion at its periphery, and the adhesion strength between the substrates at the sealing portion is 5N / 15mm or more.

Description

Technical Field

[0001] The present invention relates to a fire extinguishing body.

Background Art

[0002] In recent years, with the progress of technology, while our lives have become more and more comfortable, a large amount of energy is required to create such comfort. High safety is required for handling energy in each scenario of filling, storing, moving, and using a large amount of energy at high density.

[0003] Taking automobiles as an example, when extracting fossil fuels, when refining gasoline from fossil fuels, when transporting gasoline, when burning gasoline in an engine, etc., there are potential risks of ignition and fire. Also, taking electronics as an example, when moving electrical energy through wires, when adjusting electrical energy at substations or transformers, when using electrical energy with electrical equipment in homes or factories, or when temporarily storing it in a battery, etc., there are similarly potential risks of ignition and fire.

[0004] Regarding the problems of ignition and fire, in Patent Document 1, it is proposed to use a fire extinguishing liquid and a fire extinguisher. In Patent Document 2, an automatic fire extinguishing device dropped from a helicopter is proposed. In Patent Document 3, an aerosol fire extinguishing device is proposed.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0006] Prior art has proposed methods for dealing with fires after a certain amount of time has passed. On the other hand, from the perspective of minimizing damage from fire, it is desirable that some kind of firefighting operation (initial fire suppression) be carried out as soon as possible after ignition.

[0007] Therefore, one possible method is to pre-place the components of a fire extinguishing agent disclosed in prior art near an object that is likely to ignite. By doing so, it is expected that the fire will be extinguished by the components of the fire extinguishing agent before a person can detect that the object has ignited. However, if a deliquescent fire extinguishing agent component is used, the fire extinguishing agent may deteriorate over time, even if it is sealed in a packaging bag.

[0008] This invention has been made in view of the above circumstances, and aims to provide a fire extinguishing body that has excellent stability of the properties of a deliquescent fire extinguishing agent and can prevent the occurrence and spread of fire. [Means for solving the problem]

[0009] One aspect of the present invention provides a fire extinguishing body comprising a packaging bag formed from a base material including a resin layer, and a hygroscopic fire extinguishing agent sealed inside the packaging bag, wherein the packaging bag has a sealing portion at its periphery, and the adhesion strength between the base materials at the sealing portion is 5N / 15mm or more. With such a fire extinguishing body, the packaging bag with a sufficiently sealed periphery suppresses contact between the fire extinguishing agent and the outside air, thereby suppressing the deterioration of the hygroscopic fire extinguishing agent. In other words, the above fire extinguishing body has excellent stability of the properties of the fire extinguishing agent. Furthermore, by placing the fire extinguishing body near the target object in advance, initial fire extinguishing becomes possible, and the spread of fire to the surrounding area can be suppressed.

[0010] In one embodiment, the resin layer may contain a polyolefin resin.

[0011] In one embodiment, the thickness of the substrate may be 4.5 to 1000 μm.

[0012] In one aspect, the base material may further include a gas barrier layer.

[0013] In one aspect, the gas barrier layer may include a metal layer or a metal oxide layer.

[0014] In one aspect, in the sealing portion, the resin layers may be heat-sealed to each other.

[0015] In one aspect, the width of the sealing portion may be 5 mm or more.

Advantages of the Invention

[0016] According to the present invention, it is possible to provide a fire extinguishing body that is excellent in the property stability of a deliquescent fire extinguishing agent and can prevent the occurrence and spread of a fire. The advantages of the present invention are briefly summarized below. · Damage caused by the spread of fire can be minimized. That is, initial fire extinguishing is possible. · After a person confirms the occurrence of a fire, there is no need to carry a fire extinguisher to the vicinity of the fire target and conduct fire extinguishing activities. · Since it can be installed more simply than equipment such as automatic fire extinguishing devices, there are fewer restrictions on the installation location and it can be applied according to the necessary locations. · Even when the fire extinguishing agent has deliquescence, the fire extinguishing agent can be stably enclosed, so that the replacement frequency of the fire extinguishing body can be reduced.

Brief Description of the Drawings

[0017] [Figure 1] FIG. 1 is a schematic external view of a fire extinguishing body according to an embodiment. [Figure 2] FIG. 2 is a schematic cross-sectional view of a fire extinguishing body according to an embodiment, which is a cross-sectional view taken along line II-II in FIG. 1. [Figure 3] FIG. 3 is a schematic cross-sectional view of a fire extinguishing body according to another embodiment. [Figure 4] FIG. 4 is a schematic external view of a fire extinguishing body according to another embodiment. [Figure 5] FIG. 5 is a schematic cross-sectional view of a fire extinguishing body according to another embodiment. [Figure 6] FIG. 6 is a schematic diagram showing a method for manufacturing a fire extinguishing body according to an embodiment. [Figure 7] FIG. 7 is a schematic diagram showing a method for manufacturing a fire extinguishing body according to another embodiment.

Embodiments for Carrying Out the Invention

[0018] Hereinafter, embodiments of the present invention will be described in detail. However, the present invention is not limited to the following embodiments.

[0019] <Fire extinguishing body> FIG. 1 is a schematic external view of a fire extinguishing body according to an embodiment. FIG. 2 is a schematic cross-sectional view of the fire extinguishing body according to an embodiment, which is a cross-sectional view taken along line II-II in FIG. 1. The fire extinguishing body 10 includes a packaging bag 11 formed from a base material including a resin layer, and a fire extinguishing agent 12 enclosed in the packaging bag. The packaging bag 11 has a sealing portion 11a at its periphery, and the base materials are joined to each other at the sealing portion 11a. In this aspect, it can be said that the resin layers are heat-sealed to each other at the sealing portion.

[0020] FIG. 3 is a schematic cross-sectional view of a fire extinguishing body according to another embodiment. The fire extinguishing body 20 includes a packaging bag 21 formed from a base material including a resin layer, and a fire extinguishing agent 22 enclosed in the packaging bag. The packaging bag 21 has a sealing portion 21a at its periphery, and the base materials are joined to each other by an adhesive 23 at the sealing portion 21a. In this aspect, it can be said that the resin layers are bonded to each other by an adhesive at the sealing portion.

[0021] FIG. 4 is a schematic external view of a fire extinguishing body according to another embodiment. The fire extinguishing body 30 includes a packaging bag 31 formed from a base material including a resin layer, and a fire extinguishing agent (not shown) enclosed in the packaging bag. The packaging bag 31 has a sealing portion 31a and a folded-back portion 31b at its periphery, and the base materials are joined to each other at the sealing portion 31a. The folded-back portion 31b is formed by folding a single base material instead of using a pair of base materials. The sealing portion 31a may be in a mode conforming to the sealing portion 11a or in a mode conforming to the sealing portion 21a.

[0022] The adhesion strength between the substrates in the sealed portion is 5 N / 15 mm or more. This ensures that the fire extinguishing agent can be stably sealed even if the fire extinguishing agent is hygroscopic. From this perspective, the adhesion strength may be 7 N / 15 mm or more, or 10 N / 15 mm or more. There is no particular upper limit to the adhesion strength, but it can be set to approximately 35 N / 15 mm because there is a risk of material failure during strength measurement. The adhesion strength can be varied by adjusting the resin layer, the adhesive, the heat sealing conditions (heat sealing temperature, pressure, time), etc.

[0023] The adhesion strength between substrates is measured as follows: A sample is prepared in which the resin layers of the substrates are bonded together by heat fusion or adhesive. The heat-fused or bonded portion of this sample is cut to a width of 15 mm, and in accordance with JIS K 6854-3, it is peeled in a T-shape at a peeling speed of 300 mm / min on a tensile testing machine placed in an environment of 23°C at room temperature. The average strength from the start of peeling until the heat-fused or bonded portion separates is defined as the adhesion strength between the substrates.

[0024] When the fire extinguishing body is viewed from above in a vertical direction, the width of the sealing portion (fusion width or adhesive width) is not particularly limited, but from the viewpoint of the stability of the properties of the fire extinguishing agent, it can be, for example, 5 mm or more, and may be 5 to 40 mm.

[0025] The thickness of the central part of the fire extinguishing unit is not necessarily limited, as it varies depending on its layer structure and the amount of extinguishing agent enclosed. However, from the viewpoint of maintaining fire extinguishing performance while making it thinner to avoid space limitations, it can be, for example, 2 to 20 mm. In addition, the area of ​​the main surface of the fire extinguishing unit (the surface when the fire extinguishing unit is viewed from the top in the vertical direction) can be, for example, 9 to 620 cm² from the viewpoint of fire extinguishing performance and handling. 2 It can be done this way.

[0026] Fire extinguishing devices are installed in advance on or near objects that are at risk of ignition. If a fire breaks out at the object, the fire extinguishing devices will be used to perform initial fire suppression.

[0027] (base material) The substrate includes a resin layer. Examples of resin layer materials include polyolefins (PE, PP, COP, etc.), polyesters (PET, etc.), fluororesins (PTFE, ETFE, EFEP, PFA, FEP, PCTFE, etc.), vinyl resins (PVC, PVA, etc.), acrylic resins, epoxy resins, polyamides, polyimides, etc. The substrate may consist of one resin layer made of these materials, or it may consist of multiple resin layers. The multiple resin layers may each be made of different materials. When the substrate consists of multiple layers, the layers may be bonded together with an adhesive (adhesive layer). Examples of adhesives include acrylic adhesives, epoxy adhesives, silicone adhesives, polyolefin adhesives, urethane adhesives or polyvinyl ether adhesives, or composite adhesives thereof (e.g., epoxy-urethane composite adhesives).

[0028] The resin layer may have heat-fusible properties (thermal meltability). A resin layer having heat-fusible properties can be called a heat-fusible layer. The heat-fusible layer can be provided on the innermost layer side of the base material (the side facing the fire extinguishing agent). When the base material has a heat-fusible layer, the sealing portion at the periphery of the packaging bag can be called the heat-fusible portion (heat-seal portion). Examples of resins having heat-fusible properties include polyolefin resins. That is, the resin layer may contain a polyolefin resin. Examples of polyolefin resins include polyolefin resins such as low-density polyethylene resin (LDPE), linear low-density polyethylene resin (LLDPE), medium-density polyethylene resin (MDPE), and unoriented polypropylene resin (CPP); polyethylene resins such as ethylene-vinyl acetate copolymer and ethylene-α-olefin copolymer; and polypropylene resins such as propylene-ethylene random copolymer, propylene-ethylene block copolymer, and propylene-α-olefin copolymer. Of these, polyolefin resins may include low-density polyethylene resin (LDPE), linear low-density polyethylene resin (LLDPE), or unstretched polypropylene resin (CPP) from the viewpoint of having excellent heat-sealing properties and low water vapor permeability, which helps to suppress the deterioration of the fire extinguishing agent. These resins are transparent, making it easy to inspect the appearance of the fire extinguishing agent. Therefore, it becomes easier to check when the fire extinguishing body needs to be replaced.

[0029] The base material may include a gas barrier layer. The gas barrier layer may be provided on the outermost layer side of the base material, or it may be provided as an intermediate layer of the base material. When the base material includes a gas barrier layer, it becomes easier to maintain a gas barrier property that does not significantly change the properties of the extinguishing agent, regardless of the installation location or usage environment of the fire extinguishing device. The water vapor permeability of the gas barrier layer (according to JIS K 7129, under 40°C / 90%RH conditions) is not particularly limited as it can be designed according to the type of extinguishing agent, but it should be 10 g / m³. 2 It can be less than / day, and 1g / m³ 2It may be less than / day. From the viewpoint of adjusting the water vapor permeability, examples of gas barrier layers include metal layers and metal oxide layers, specifically metal oxide vapor-deposited layers such as alumina vapor-deposited layers and silica vapor-deposited layers, and metal foils such as aluminum foil. In addition to the resin layer provided as the innermost layer, the substrate may further include a resin layer to support the gas barrier layer. If the gas barrier layer includes a metal oxide vapor-deposited layer, the metal oxide vapor-deposited layer may face the fire extinguishing agent side.

[0030] The thickness of the base material can be appropriately selected depending on the operating environment of the fire extinguishing body and the available space. For example, a thicker base material makes it easier to suppress water vapor permeation, obtain strength and rigidity, obtain a highly flat shape, and facilitates handling. Conversely, a thinner base material allows the fire extinguishing body to be installed in a narrow space. The thickness of the base material can be, for example, 4.5 to 1000 μm, 12 to 100 μm, or 12 to 50 μm. The thickness of the resin layer and the gas barrier layer can be appropriately adjusted according to the thickness of the base material. The thickness of the resin layer (total thickness if the base material includes multiple resin layers) can be, for example, 4.5 to 150 μm, or 10 to 100 μm. The thickness of the gas barrier layer can be, for example, 5 to 100 nm if it is a metal oxide vapor deposition layer, or 0.8 to 30 μm if it is a metal foil.

[0031] (Fire extinguishing agent) The fire extinguishing agent is not particularly limited, and any agent possessing the so-called four elements of fire extinguishing (removal action, cooling action, suffocation action, and negative catalytic action) can be used as appropriate depending on the nature of the object. The packaging bag of this embodiment is particularly suitable for fire extinguishing agents that are hygroscopic. Examples of hygroscopic fire extinguishing agents include general fire extinguishing agents (such as powder-type fire extinguishing agents mainly composed of potassium salts, as well as general powder-type fire extinguishing agents such as sodium bicarbonate and phosphates). ABC fire extinguishing agents are used as all-purpose fire extinguishing agents, while BC fire extinguishing agents are used for oil and electrical fires. When the object is a lithium-ion battery, BC fire extinguishing agents or other fire extinguishing agents for lithium-ion batteries are used.

[0032] The fire extinguishing agent may generally contain at least one of a deliquescent organic salt and an inorganic salt that has fire extinguishing properties.

[0033] Examples of organic salts that function as fire extinguishing agents include potassium salts, sodium salts, and ammonium salts. Potassium salts are preferably used as organic salts. Examples of organic potassium salts include potassium acetate, potassium citrate (tripotassium citrate, dipotassium citrate, monopotassium citrate), potassium tartrate, potassium lactate, potassium oxalate, potassium maleate, and other potassium carboxylate salts. Of these, potassium citrate can be used from the viewpoint of its usefulness as a negative catalytic effect in combustion.

[0034] Examples of inorganic salts that function as fire extinguishing agents include potassium salts and sodium salts. Potassium salts are preferably used as inorganic salts. Examples of inorganic potassium salts include potassium tetraborate, potassium carbonate, potassium bicarbonate, potassium dihydrogen phosphate, and dipotassium hydrogen phosphate. Of these, potassium bicarbonate can be used from the viewpoint of its usefulness as a negative catalytic effect on combustion.

[0035] Organic salts and inorganic salts may be used individually or in combination of two or more types.

[0036] The fire extinguishing agent may contain components other than the salts mentioned above. Examples of other components include oxidizing agents to improve the reactivity of the salts, specifically potassium chlorate, sodium chlorate, strontium chlorate, ammonium chlorate, magnesium chlorate, etc. Other components may include colorants, antioxidants, flame retardants, inorganic fillers, fluidity enhancers, moisture-proofing agents, dispersants, UV absorbers, metal catalysts, etc.

[0037] The amount of extinguishing agent can be appropriately selected depending on the type of object, the intensity of the fire at the time of ignition, the time required for extinguishing, the available space, etc. A larger amount of extinguishing agent improves the extinguishing capacity and shortens the extinguishing time, but it may also increase the bulk, limiting the places where the extinguishing device can be placed. For example, the amount of extinguishing agent can range from 0.4 to 3.9 g / cm³. 2 It can be set to 1.0~2.5 g / cm³ 2 It may be 0.01-1.0 g / cm³, or 0.01-1.0 g / cm³. 2 It can be expressed as 0.02~0.2 g / cm³. 2 That's fine.

[0038] The fire extinguishing agent may be mixed with a binder. That is, the fire extinguishing agent may be a composition containing a fire extinguishing agent (fire extinguishing agent component) and a binder. The amount of fire extinguishing agent contained in the composition (fire extinguishing agent composition) can be 70 to 97% by mass based on the total amount of the fire extinguishing agent composition.

[0039] Thermoplastic resins and thermosetting resins can be used as binder resins. Examples of thermoplastic resins include polyvinyl alcohol resins, polyvinyl acetal resins, polypropylene resins, polyethylene resins, poly(1-)butene resins, polypentene resins and other polyolefin 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, and polyvinyl chloride resins. Examples of thermosetting resins include 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), polyvulcanized rubber (T), silicone rubber (Q), fluororubber (FKM, FZ), urethane rubber (U), and other rubbers, as well as polyurethane resins, polyisocyanate resins, polyisocyanurate resins, phenolic resins, epoxy resins, etc. The binder resin may contain a curing agent component.

[0040] The fire extinguishing agent may be formed as a fire extinguishing agent layer on a fire extinguishing agent support layer. Using a fire extinguishing agent support layer makes it easier to handle the fire extinguishing agent. Examples of the fire extinguishing agent support layer include the resin layer of the base material described above, and specifically, a polyester resin layer (e.g., a PET layer) is an example.

[0041] The above-mentioned fire extinguishing agent layer can be formed on an object by applying a coating solution of a fire extinguishing agent composition containing a liquid medium onto the target fire extinguishing agent support layer and drying it. The coating can be applied using a wet coating method. Examples of wet coating methods include gravure coating, comma coating, spray coating, dip coating, curtain coating, spin coating, sponge roll coating, die coating, and brush painting. The viscosity of the coating solution is preferably 1 to 2000 mPa·s for gravure coating, 500 to 100000 mPa·s for comma coating, and 0.1 to 4000 mPa·s for spray coating. The amount of the liquid medium can be adjusted as appropriate so that the viscosity of the coating solution falls within the desired range. The viscosity can be measured using a coaxial double-cylinder rotational viscometer. The amount of liquid medium can be adjusted as appropriate depending on the method of application of the coating, but it can be 40 to 60% by mass based on the total amount of the fire extinguishing agent composition.

[0042] (glue) Examples of adhesives include acrylic adhesives, epoxy adhesives, silicone adhesives, polyolefin adhesives, urethane adhesives, or polyvinyl ether adhesives, or synthetic adhesives thereof. Of these, urethane adhesives or epoxy-urethane synthetic adhesives are preferably used as adhesives, from the viewpoint of achieving both adhesion to the substrate at high temperature and humidity of 85°C-85%RH and low cost.

[0043] By using an adhesive, the edges of the base material can be joined even if the resin layer does not have heat-sealing properties. When the edges of the base material are joined using an adhesive, the sealed portion of the packaging bag's edge can be called the bonded portion.

[0044] In Figure 3, adhesive is used only in the sealing portion, but if the adhesive does not affect the stability of the fire extinguishing agent, it may be used on the entire inner surface of the substrate.

[0045] Figure 5 is a schematic cross-sectional view of a fire extinguishing body according to another embodiment. The fire extinguishing body 60 comprises a packaging bag 61 formed from a base material, a fire extinguishing agent 62 sealed inside the packaging bag, and an adhesive layer 64 (or bonding layer) and a release film 65 on one side of the packaging bag. The base material includes a resin layer 611 as an inner layer and a gas barrier layer 612 as an outer layer. The resin layer 611 and the gas barrier layer 612 are laminated via an adhesive layer 63. The fire extinguishing agent 62 is formed as a fire extinguishing agent layer on a fire extinguishing agent support layer 613. In this embodiment, since an adhesive layer 64 is provided on one side of the packaging bag, the fire extinguishing body can be installed more easily in locations where there is a risk of ignition. In addition, a release film 65 is provided so as to cover the adhesive layer 64. The release film 65 is peeled off when the fire extinguishing body is attached to the desired location, and may be made of resin or paper.

[0046] The fire extinguishing body may further comprise a design layer. The design layer can be formed by printing or printing. Specific examples of designs include wood grain patterns that are mindful of living spaces, solid white or gray patterns such as tile patterns, as well as pictures, designs, and text patterns. Providing a design layer has effects such as enhancing the aesthetic appeal, allowing the fire extinguishing body to blend in with the surrounding environment, and increasing the strength of the fire extinguishing body. For example, in the embodiment shown in Figure 5, the design layer can be provided on the side of the packaging bag opposite to the adhesive layer (the side to which the fire extinguishing body is attached). If the layer contained in the base material is transparent, the design layer may be provided within the base material; for example, in the embodiment shown in Figure 5, the design layer may be provided inside the gas barrier layer. The design layer may be a single layer or a multi-layer structure.

[0047] (Objects subject to fire extinguishing) There are no particular restrictions on the objects that can be extinguished, as long as they are likely to ignite. Examples of objects that are likely to ignite include electrical wires, distribution boards, switchboards, control panels, storage batteries (lithium-ion batteries, etc.), building materials such as wallpaper and ceiling materials, lithium-ion battery collection boxes (recycling boxes), trash cans, automotive-related parts, electrical outlets, and outlet covers.

[0048] <Manufacturing method for fire extinguishing devices> Fire extinguishing devices can be manufactured, for example, by the following methods, but are not limited to these.

[0049] Figure 6 is a schematic diagram showing a method for manufacturing a fire extinguishing body according to one embodiment. As shown in the figure, a fire extinguishing body can be obtained by providing a fire extinguishing agent 42 between a pair of base materials 44 and sealing the periphery of the base materials 44 by heat sealing or adhesive. Heat sealing can be performed using a heat sealing bar under conditions such as 80 to 140°C, 0.15 to 0.4 MPa, and for 0.1 to 50 seconds.

[0050] Figure 7 is a schematic diagram showing a method for manufacturing a fire extinguishing body according to another embodiment. As shown in the figure, a fire extinguishing body can be obtained by folding a single base material 54, placing a fire extinguishing agent 52 between the opposing base materials 54, and joining and sealing the periphery of the base material 54 other than the folded portion with heat sealing or adhesive.

[0051] Furthermore, a fire extinguishing body can be obtained by joining the periphery of a pair of base materials with heat sealing or adhesive while leaving an opening, then filling the opening with fire extinguishing agent, and finally sealing the opening with heat sealing or adhesive.

[0052] Alternatively, a fire extinguishing body can be obtained by folding one substrate in half, joining the periphery of the opposing substrate with heat sealing or adhesive while leaving an opening, inserting a fire extinguishing agent through the opening, and then sealing the opening with heat sealing or adhesive.

[0053] When using a fire extinguishing agent composition containing a fire extinguishing agent and a binder as a fire extinguishing agent, for example, a coating liquid containing the fire extinguishing agent composition may be applied to a resin layer or a fire extinguishing agent support layer to form a fire extinguishing agent layer, and this can be used to provide the fire extinguishing agent between substrates. Alternatively, the fire extinguishing agent may be provided between substrates by placing a resin mixed with the fire extinguishing agent onto the substrate. The fire extinguishing agent (fire extinguishing agent-containing layer) may be a layer of a composition containing a fire extinguishing agent and a binder, or a resin layer containing a fire extinguishing agent.

[0054] <Summary of this embodiment> [Invention 1] The packaging bag comprises a base material including a resin layer, and a deliquescent fire extinguishing agent sealed inside the packaging bag. A fire extinguishing body wherein the packaging bag has a sealing portion around its periphery, and the adhesion strength between the substrates in the sealing portion is 5 N / 15 mm or more. [Invention 2] The fire extinguishing body according to Invention 1, wherein the resin layer contains a polyolefin resin. [Invention 3] The fire extinguishing body according to Invention 1 or 2, wherein the thickness of the base material is 4.5 to 1000 μm. [Invention 4] The fire extinguishing body according to any one of inventions 1 to 3, wherein the aforementioned base material further includes a gas barrier layer. [Invention 5] The fire extinguishing body according to Invention 4, wherein the gas barrier layer includes a metal layer or a metal oxide layer. [Invention 6] The fire extinguishing body according to any one of Inventions 1 to 5, wherein the resin layers are heat-fused together in the sealing portion. [Invention 7] The fire extinguishing body according to any one of inventions 1 to 6, wherein the width of the sealing portion is 5 mm or more. [Examples]

[0055] The present invention will be described in more detail by the following examples, but the present invention is not limited to these examples.

[0056] <Preparation of fire extinguishing devices> (Example 1) Toyo Ink's epoxy-urethane synthetic adhesives AD-393 and CAT-EP5, along with IPA as a diluent, were prepared. These were mixed in a ratio of 15:1:25.7 and stirred for 1 minute to produce a dry laminating adhesive with a solid content of 20% by mass. We prepared LDPE film (manufactured by Mitsui Chemicals Tohcello Co., Ltd., 30 μm thick) and GL-ARH PET film with an alumina vapor deposition layer (manufactured by Toppan Printing Co., Ltd., 12 μm thick). The above-mentioned dry laminating adhesive was applied to the alumina vapor-deposited layer side of GL-ARH using a wire bar #14 in a bar-coating method, and dried in an oven at 80°C for 30 seconds, with a dry coating amount of 2g / m². 2 An adhesive layer was obtained. Using a Taisei Laminator FA-570 desktop laminator, the corona-treated side of the LDPE film was laminated to the above adhesive layer under conditions of a lamination temperature of 60°C and a pressure of 0.5 MPa to obtain a laminated film. Two 50mm square samples were cut from the laminated film and placed on a TP-701-B heat sealer manufactured by Tester Sangyo Co., Ltd. with the LDPE film facing each other. Then, using a sealing bar with a width of 1cm and a length of 30cm, the three edges of the laminated film were heat-sealed at 100°C, 0.3MPa, and for 0.5 seconds, so that the width of the heat-sealed area was 1cm, thereby obtaining a laminated film bag. As a fire extinguishing agent, 8.2g of ABC fire extinguishing agent manufactured by Morita Miyata Industries Co., Ltd., which is hygroscopic, was weighed and filled into a laminated film bag. Using the heat sealer described above, the opening end was heat-sealed under the same conditions as described above to create a fire extinguishing body.

[0057] (Other examples and comparative examples) The fire extinguishing body was manufactured in the same manner as in Example 1, except that the heat sealing conditions were changed as shown in Table 1.

[0058] <Evaluation of fire extinguishing devices> The following evaluations were conducted on the fire extinguishing devices in each case. The results are shown in Table 1.

[0059] (Measurement of adhesion strength) Samples were obtained by cutting 15 mm wide sections from the heat-sealed portions of the fire extinguishing bodies obtained in each example. These samples were subjected to T-shaped peeling at a peeling speed of 300 mm / min using a tensile testing machine placed at room temperature (23°C) in accordance with JIS K 6854-3. The strength from the start of peeling until the heat-sealed portion separated was measured. This measurement was performed three times, changing the location of the heat-sealed portion each time, and the average value was taken as the adhesion strength between the substrates.

[0060] (Measurement of total light transmittance) The total light transmittance of the fire extinguishing materials obtained in each example was measured. Specifically, a haze meter (manufactured by BYK) was used, and after calibration of the device, the sample was fixed so that light entering the integrating sphere from the light source passed through the fire extinguishing agent filled in the laminated film bag of the fire extinguishing material, and measurements were taken. Total light transmittance was measured immediately after the fire extinguishing material was prepared (initial) and after a predetermined time (88 hours or 232 hours) had elapsed after the fire extinguishing material was placed in an 85°C-85%Rh constant temperature and humidity chamber. This procedure was performed three times, changing the measurement location each time, and the average value was recorded. As the deliquescence of the fire extinguishing agent progresses, the fire extinguishing agent becomes more transparent and the value of total light transmittance increases, so the degree of deliquescence of the fire extinguishing agent can be determined by measuring the total light transmittance.

[0061] [Table 1] [Industrial applicability]

[0062] The fire extinguishing body of the present invention can be suitably used in components used in industrial materials such as building materials, automobile components, aircraft components, and electronic components. [Explanation of symbols]

[0063] 10, 20, 30, 60... Fire extinguishing body, 11, 21, 31, 61... Packaging bag, 12, 22, 42, 52, 62... Fire extinguishing agent, 23... Adhesive, 11a, 21a, 31a... Sealing part, 31b... Folded part, 44, 54... Base material, 63... Adhesive layer, 64... Adhesive layer (adhesive layer), 65... Release film, 611... Resin layer, 612... Gas barrier layer, 613... Fire extinguishing agent support layer.

Claims

1. The packaging bag comprises a base material including a resin layer, and a deliquescent fire extinguishing agent sealed inside the packaging bag. A fire extinguishing body wherein the packaging bag has a sealing portion around its periphery, and the adhesion strength between the substrates in the sealing portion is 5 N / 15 mm or more.

2. The fire extinguishing body according to claim 1, wherein the resin layer comprises a polyolefin resin.

3. The fire extinguishing body according to claim 1 or 2, wherein the thickness of the base material is 4.5 to 1000 μm.

4. The fire extinguishing body according to claim 1 or 2, wherein the base material further comprises a gas barrier layer.

5. The fire extinguishing body according to claim 4, wherein the gas barrier layer includes a metal layer or a metal oxide layer.

6. The fire extinguishing body according to claim 1 or 2, wherein the resin layers are heat-fused together in the sealing portion.

7. The fire extinguishing body according to claim 1 or 2, wherein the width of the sealing portion is 5 mm or more.

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