Fire-extinguishing laminate, and wound body thereof

Abstract

To provide a fire-extinguishing laminate and a wound body thereof, which can be easily installed at a location with a likelihood of inflammation and can exert an excellent effect in an initial fire-extinguishing at inflammation.SOLUTION: The fire-extinguishing laminate according to the present invention comprises a resin base material, and a fire-extinguishing agent-containing layer provided on a surface of the resin base material, the fire-extinguishing agent-containing layer comprising a fire-extinguishing agent component configured to generate aerosol by burning and a binder resin. The wound body according to the present invention is a wound body of the fire-extinguishing laminate.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a fire extinguishing laminate, a method for producing the same, and a roll of the fire extinguishing laminate. [Background technology]

[0002] In recent years, technological advances have made our lives more comfortable, but at the same time, large amounts of energy are required to create that comfort. High levels of safety are required in the handling of energy in each scenario, such as when large amounts of energy are densely packed and stored, transported, and used.

[0003] Taking automobiles as an example, there is a risk of fire when mining fossil fuels, refining gasoline from fossil fuels, transporting gasoline, burning gasoline in the engine, etc. Taking electronics as an example, there is a similar risk of fire when transferring electrical energy through power lines, adjusting electrical energy in substations and transformers, using electrical energy in electrical devices in homes and factories, or temporarily storing it in batteries, etc.

[0004] To address the problem of ignition and fire, Patent Document 1 proposes the use of fire extinguishing liquid and a fire extinguisher. Patent Document 2 proposes an automatic fire extinguishing device dropped from a helicopter. Patent Document 3 proposes an aerosol fire extinguishing device. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 9-276440 [Patent Document 2] Japanese Patent Application Laid-Open No. 2015-6302 [Patent Document 3] Japanese Patent Application Publication No. 2017-080023 Summary of the Invention [Problem to be solved by the invention]

[0006] While all of the prior art proposes methods for dealing with a fire after a certain amount of time has passed, from the perspective of minimizing damage caused by a fire, it is desirable to carry out some kind of fire-fighting operation (initial fire extinguishing) immediately after the fire has started.

[0007] Therefore, for example, a method of pre-existing the components of a fire extinguishing agent disclosed in the prior art near an object at risk of ignition is conceivable. By doing so, it is expected that the components of the fire extinguishing agent will be able to completely extinguish the fire before a person senses that the object has ignited. However, it is necessary to address the problem that fire extinguishing agents placed in open spaces deteriorate over time. In addition, it is obviously not realistic to simply spray the fire extinguishing agent near the object; it is necessary to provide the extinguishing agent near the object in a form that is reasonably easy to handle.

[0008] The present invention has been made in view of the above circumstances, and provides a fire-extinguishing laminate that can be easily installed in areas where there is a risk of fire and that is highly effective in extinguishing a fire in the early stages of an outbreak, as well as a method for efficiently producing the same. The present invention also provides a fire-extinguishing composition, a fire-extinguishing sheet, and a fire-extinguishing molded product that have excellent fire-extinguishing performance. [Means for solving the problem]

[0009] A method for producing a fire extinguishing laminate according to one aspect of the present invention includes the steps of: (A) preparing a coating liquid containing a fire extinguishing agent component that generates an aerosol upon combustion and a binder resin; (B) forming a coating film on the surface of a substrate using the coating liquid; and (C) drying the coating film to form a fire extinguishing agent-containing layer containing the fire extinguishing agent component and the binder resin on the surface of the substrate, wherein steps (B) and (C) are carried out by roll-to-roll production. By carrying out steps (B) and (C) by roll-to-roll production, a fire extinguishing laminate with excellent fire extinguishing performance can be mass-produced efficiently. Another aspect of the present invention relates to a rolled body (e.g., 100 to 12,000 m in length) of the fire extinguishing laminate.

[0010] A fire extinguishing laminate according to one aspect of the present invention includes a base layer and a fire extinguishing agent-containing layer provided on the surface of the base layer, the fire extinguishing agent-containing layer containing a fire extinguishing agent component that generates an aerosol upon combustion and a binder resin. This fire extinguishing laminate can be easily installed in a location where there is a risk of fire and is highly effective in extinguishing a fire in its initial stage.

[0011] The extinguishing agent component contains, for example, at least an inorganic oxidizing agent that burns together with the binder resin to generate thermal energy, and a radical generator, and the decomposition starting temperature of the radical generator is in the range of 90°C to 260°C. Such an extinguishing agent component has excellent fire extinguishing performance. The extinguishing agent component contains, for example, at least one of a potassium salt and a sodium salt as the radical generator. The potassium salt and the sodium salt have the effect of stabilizing combustion radicals and suppressing the chain reaction of combustion (negative catalytic action).

[0012] The binder resin is preferably an epoxy resin. Epoxy resins have excellent compatibility with potassium salts and sodium salts (radical generators), making it easy to obtain a fire-extinguishing agent-containing layer with a uniform thickness. In addition, epoxy resins are not subject to hydrolysis or embrittlement due to moist heat, so fire-extinguishing agent-containing layers containing epoxy resins as binder resins have excellent stability. Furthermore, when the fire-extinguishing agent-containing layer burns, thermal decomposition begins at approximately 260 to 350°C, allowing aerosol to be generated without impairing fire-extinguishing performance. The binder resin preferably has water vapor barrier properties.

[0013] The content of the binder resin in the fire extinguishing agent-containing layer is preferably 3 to 30% by mass. The content of the fire extinguishing agent component in the fire extinguishing agent-containing layer is preferably 70 to 97% by mass. When the content of the binder resin in the fire extinguishing agent-containing layer is 3% by mass or more, excellent coating properties can be realized. When the content of the fire extinguishing agent component in the fire extinguishing agent-containing layer is 70% by mass or more, excellent fire extinguishing performance can be realized. [Effects of the Invention]

[0014] The present invention provides a fire-extinguishing laminate that can be easily installed in areas where there is a risk of fire and that is highly effective in extinguishing a fire in its initial stage, and a method for efficiently producing the same. The present invention also provides a fire-extinguishing composition, a fire-extinguishing sheet, and a fire-extinguishing molded product that have excellent fire-extinguishing performance. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a cross-sectional view schematically showing one embodiment of a fire extinguishing laminate according to the present invention. [Figure 2] FIG. 2 is a cross-sectional view schematically showing the fire extinguishing laminate shown in FIG. 1 in use. [Figure 3] 3(a) and 3(b) are cross-sectional views schematically showing other embodiments of the fire extinguishing laminate according to the present invention. [Figure 4] FIG. 4 is a cross-sectional view schematically showing another embodiment of the fire extinguishing laminate according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, embodiments of the present invention will be described in detail. However, the present invention is not limited to the following embodiments. In the following embodiments, a fire-extinguishing film (wherein the thickness of the fire-extinguishing agent-containing layer is, for example, 1 mm or less) will be exemplified as a laminate having at least one fire-extinguishing agent-containing layer.

[0017] <Fire extinguishing film> Fig. 1 is a schematic cross-sectional view of a fire extinguishing film according to this embodiment. A fire extinguishing film 10 (fire extinguishing laminate) comprises, in this order, a substrate 1 (substrate layer) and a fire extinguishing agent-containing layer 3. The fire extinguishing agent-containing layer 3 may be provided on at least a portion of one surface 1a of the substrate 1, but may also be provided on the entire surface 1a, as shown in Fig. 1.

[0018] Fig. 2 is a schematic cross-sectional view showing how the fire extinguishing film 10 is used. As shown in Fig. 2, the fire extinguishing film 10 is used with the extinguishing agent-containing layer 3 facing an object X that may ignite. If a fire breaks out at the object X, the fire will be initially extinguished by the fire extinguishing film 10 that has been installed in advance. The object X is not particularly limited as long as it is flammable and has a surface (flat or curved) on which the fire extinguishing film 10 can be placed. Examples of the object include electric wires, distribution boards, control panels, storage batteries (lithium ion batteries, etc.), building materials such as wallpaper for building materials and ceiling materials, and components of collection boxes for lithium ion batteries.

[0019] (base material) A resin substrate can be selected as the substrate 1. Examples of materials for the resin substrate include polyolefins (such as LLDPE, PP, COP, and CPP), polyesters (such as PET), fluororesins (such as PTFE, ETFE, EFEP, PFA, FEP, and PCTFE), PVC, PVA, acrylic resins, epoxy resins, polyamides, and polyimides. Among these, the resin substrate may contain at least one selected from the group consisting of LLDPE, PP, COP, CPP, PET, PTFE, ETFE, EFEP, PFA, FEP, PCTFE, and PVC, which have low water vapor permeability and are easy to suppress deterioration of the fire extinguishing agent components. Furthermore, selecting a highly transparent material facilitates visual inspection of the fire extinguishing film 10 and confirmation of the replacement period. The resin substrate may contain a fire extinguishing agent. The substrate 1 may be made of metals such as aluminum and stainless steel, or may be made of non-combustible paper or glass cloth.

[0020] The thickness and breaking strength of the resin substrate can be appropriately selected depending on the amount of heat, impact, allowable space, etc., at the time of fire outbreak. For example, a thick resin substrate can easily suppress water vapor permeation, provide strength and rigidity, and achieve a highly flat form, making handling easier. Furthermore, a thin resin substrate allows the fire extinguishing element to be installed in a narrow space. The thickness of the resin substrate can be, for example, 4.5 to 100 μm, and may be 12 to 50 μm. The resin substrate may be a laminate of multiple resin substrates.

[0021] The resin substrate may be a resin substrate having heat resistance and impact resistance (high-strength heat-resistant resin substrate). A high-strength heat-resistant substrate preferably has at least one of a tensile strength of 20 N / cm or more and a melting point of 500°C or more. The resin substrate may contain, as a reinforcing material, materials such as carbon, glass, stainless steel, aluminum, ceramic, etc., particularly woven fabric (cloth) made of fibers made of these materials. The resin substrate's heat resistance and impact resistance can prevent holes from being created in the resin substrate due to heat or impact during ignition. This can prevent the fire extinguishing agent from being sprayed in the opposite direction from the target.

[0022] The resin substrate preferably has a water vapor barrier property to such an extent that the properties of the fire extinguishing agent component contained in the fire extinguishing agent-containing layer 3 do not change significantly, regardless of the installation location or usage environment of the fire extinguishing film 10. The water vapor permeability of the resin substrate (under conditions of 40°C / 90% RH in accordance with JIS K 7129) is not particularly limited as it can be designed depending on the type of fire extinguishing agent component, but is preferably 2×10 2 g / m 2 / day or less, 1 x 10 2 g / m 2 / day or less. From the viewpoint of adjusting the water vapor permeability, the resin substrate may be provided with a vapor-deposited layer (alumina vapor-deposited layer or silica vapor-deposited layer) having water vapor barrier properties.

[0023] (Fire extinguishing agent-containing layer) The fire extinguishing agent-containing layer 3 is a layer containing a fire extinguishing agent component and a binder resin. The fire extinguishing agent component generates an aerosol when burned. The fire extinguishing agent component contains, for example, at least an inorganic oxidizing agent and a radical generator. The radical generator has the effect of stabilizing combustion radicals and suppressing the chain reaction of combustion (negative catalytic action).

[0024] The thickness of the fire-extinguishing agent-containing layer 3 may be appropriately set depending on the fire extinguishing target of the fire-extinguishing film 10, the installation location, and the amount of fire-extinguishing agent component to be blended. The thickness of the fire-extinguishing agent-containing layer 3 may be, for example, 1 mm or less, and may be 30 to 1000 μm, or may be 120 to 500 μm.

[0025] The content of the extinguishing agent component in the extinguishing agent-containing layer 3 (based on the mass of the extinguishing agent-containing layer 3) is, for example, 70 to 97 mass %, preferably 80 to 95 mass %, and more preferably 85 to 92 mass %. When the content of the extinguishing agent component is 70 mass % or more, excellent fire extinguishing performance can be achieved, while when it is 97 mass % or less, excellent film formability can be achieved. The amount of the extinguishing agent component per unit area may be set depending on the target to be extinguished. For example, the weight per unit area required to extinguish a small fire such as a cigarette lighter using a fire-extinguishing film formed on a 15 μm-thick PET substrate with a 95 mass % content of the extinguishing agent component is 25 g / m2 It is sufficient if the heating power is 90g / m for 1g of solid fuel. 2 For large fires such as large-scale fires and fires from lithium-ion batteries, the standard is 100g / m 2 It is preferable that this is equal to or greater than this.

[0026] [Fire extinguishing agent ingredients] As described above, the fire extinguishing agent-containing layer 3 contains an inorganic oxidizing agent and a radical generating agent as fire extinguishing agent components. These components will be described below.

[0027] The inorganic oxidizing agent (hereinafter sometimes referred to as "component (A)") is a component that burns together with the binder resin to generate thermal energy. Examples of inorganic oxidizing agents include potassium chlorate, sodium chlorate, strontium chlorate, ammonium chlorate, and magnesium chlorate. Among these, one type may be used alone, or two or more types may be used in combination.

[0028] The radical generator (hereinafter sometimes referred to as "component (B)") is a component for generating an aerosol (radicals) by thermal energy generated by the combustion of the binder resin and the inorganic oxidizing agent. It is preferable to use a radical generator whose decomposition starting temperature is in the range of 90°C to 260°C. Examples of the radical generator include potassium salts and sodium salts. Examples of potassium salts include potassium acetate, potassium propionate, monopotassium citrate, dipotassium citrate, tripotassium citrate, monopotassium trihydrogen ethylenediaminetetraacetate, dipotassium dihydrogen ethylenediaminetetraacetate, tripotassium monohydrogen ethylenediaminetetraacetate, tetrapotassium ethylenediaminetetraacetate, potassium hydrogen phthalate, dipotassium phthalate, potassium hydrogen oxalate, dipotassium oxalate, and potassium bicarbonate. Examples of sodium salts include sodium acetate, sodium citrate, and sodium bicarbonate. One of these may be used alone, or two or more may be used in combination.

[0029] The content of component (A) is, for example, 10 to 60 parts by mass, preferably 20 to 50 parts by mass, and more preferably 35 to 45 parts by mass, per 100 parts by mass of the combined amount of components (A) and (B).The content of component (B) is, for example, 40 to 90 parts by mass, preferably 50 to 80 parts by mass, and more preferably 55 to 65 parts by mass, per 100 parts by mass of the combined amount of components (A) and (B).

[0030] [Binder resin] Thermoplastic resins and thermosetting resins can be used as the binder resin. Examples of thermoplastic resins 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, and polyvinyl chloride resins. 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), as well as polyurethane resins, polyisocyanate resins, polyisocyanurate resins, phenolic resins, and epoxy resins.

[0031] Epoxy resins are suitable as binder resins because they have excellent compatibility with fire extinguishing agent components, are soluble in alcohol solvents described below, and are highly stable.

[0032] It is preferable to use a binder resin that has water vapor barrier properties. When a single layer film made of the binder resin is produced, the binder resin preferably has a water vapor barrier property of 5 g mm / m. 2 / day or less, preferably 1g·mm / m 2 Preferably, the binder resin can achieve a water vapor transmission rate of 1000 kJ / day or less (under conditions of 40°C / 90% RH according to JIS K 7129). An example of a commercially available binder resin of this type is Maxieve (trade name, manufactured by Mitsubishi Gas Chemical Company).

[0033] The binder resin content of the fire extinguishing agent-containing layer 3 (based on the mass of the fire extinguishing agent-containing layer 3) is, for example, 3 to 30 mass%, preferably 5 to 20 mass%, and more preferably 8 to 15 mass%. When the binder resin content is 3 mass% or more, excellent film formability can be achieved, while when it is 30 mass% or less, excellent fire extinguishing performance can be achieved.

[0034] [Other ingredients] Examples of other components that may be blended into the fire extinguishing agent-containing layer 3 include dispersants such as water, solvents, colorants, antioxidants, flame retardants, inorganic fillers, and adhesives. These components may be selected appropriately depending on the composition of the fire extinguishing agent-containing layer 3 and the type of binder resin. The content of other components in the fire extinguishing agent-containing layer 3 (based on the mass of the fire extinguishing agent-containing layer 3) is, for example, 10 mass% or less.

[0035] <Fire extinguishing film manufacturing method> The method for producing the fire extinguishing film 10 includes the steps of (A) preparing a coating liquid containing the above-mentioned fire extinguishing agent components and the above-mentioned binder resin, (B) forming a coating film on the surface 1a of the substrate 1 using the coating liquid, and (C) drying the coating film to form the fire extinguishing agent-containing layer 3 on the surface 1a, and steps (B) and (C) are carried out by roll-to-roll.

[0036] In step (A), it is preferable to use an alcohol solvent (e.g., ethanol, IPA) as the solvent used to prepare the coating liquid. Alcohol solvents have excellent dispersibility of fire extinguishing agent components and low volatility, making them suitable as solvents for preparing the coating liquid. Ethyl acetate may also be used as the solvent.

[0037] Step (B) may be performed by wet coating, or by impregnating the substrate 1 with a coating liquid. By performing steps (B) and (C) by roll-to-roll processing, the fire extinguishing film 10 with excellent fire extinguishing performance can be mass-produced efficiently. That is, a roll of the fire extinguishing film 10 can be produced efficiently and inexpensively. The length of the roll is, for example, 100 to 1000 m, and may be 1000 to 12000 m. The width of the roll is, for example, 0.01 to 0.3 m, and may be 0.3 to 1.5 m. When using the fire extinguishing film 10, it can be cut to a size depending on the application and installation location.

[0038] The manufacturing method according to this embodiment allows for efficient production of the fire extinguishing film 10 by extrusion molding. The fire extinguishing film 10 can be easily installed in areas where there is a risk of fire and is highly effective in extinguishing a fire in its early stages. This makes it useful in terms of being able to suppress the spread of fire.

[0039] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments. For example, in the above embodiments, a fire-extinguishing film having a two-layer structure of a substrate 1 and a fire-extinguishing agent-containing layer 3 has been exemplified, but the fire-extinguishing film may further include a pressure-sensitive adhesive layer or an adhesive layer. The fire-extinguishing film 20A shown in FIG. 3(a) includes a substrate 1, a fire-extinguishing agent-containing layer 3, a pressure-sensitive adhesive layer 4, and a release film 5, in this order. The fire-extinguishing film 20B shown in FIG. 3(b) includes a release film 5, a pressure-sensitive adhesive layer 4, a substrate 1, and a fire-extinguishing agent-containing layer 3, in this order. The release film 5 is peeled off when the fire-extinguishing films 20A and 20B are used, and may be made of resin or paper. The presence of the pressure-sensitive adhesive layer 4 or an adhesive layer in the fire-extinguishing film makes it easier to install the fire-extinguishing film in areas where there is a risk of fire.

[0040] The fire-extinguishing film may have a configuration in which the fire-extinguishing agent-containing layer 3 is sandwiched between other layers, as shown in Fig. 4. The fire-extinguishing film 30 shown in Fig. 4 includes the fire-extinguishing agent-containing layer 3 and surface layers 6a, 6b arranged to sandwich the fire-extinguishing agent-containing layer 3. For example, the same resin substrate as the substrate 1 can be used for the surface layers 6a, 6b. By providing the surface layers 6a, 6b, the durability or design of the fire-extinguishing agent-containing layer 3 can be improved, and a fire-extinguishing film 30 with high strength can be obtained. [Example]

[0041] The present invention will be described in more detail by the following examples, but the present invention is not limited to these examples.

[0042] <Examples 1 to 12 and Comparative Examples 1 and 2> The following materials were prepared: [Base material] Substrate 1: PET film (thickness: 4.5 μm) Substrate 2: PET film (thickness: 15 μm) Substrate 3: PET film (thickness: 50 μm) Substrate 4: Aluminum foil (thickness: 150 μm) [Fire extinguishing agent ingredients] Aerosol fire extinguisher (manufactured by Yamato Protec Co., Ltd.) [solvent] Solvent 1: Ethyl acetate Solvent 2: Ethanol [Binder resin] Resin 1: Epoxy resin (product name: K468, manufactured by Toyo Ink Co., Ltd.) Resin 2: Epoxy resin (product name: Maxive, manufactured by Mitsubishi Gas Chemical Company, Inc.)

[0043] Each coating liquid was prepared using the components shown in Table 1. After forming a coating film on the surface of the substrate, it was dried at 90°C for 2 minutes to form a fire-extinguishing agent-containing layer (uncured) on the substrate. The fire-extinguishing agent-containing layer was then cured by a curing treatment at 50°C for 48 hours. This resulted in a fire-extinguishing laminate consisting of the substrate and the fire-extinguishing agent-containing layer. Note that "binder content" in Table 1 refers to the content of binder resin in the coating film after drying. "Coating amount" in Table 1 refers to the mass per unit area of ​​the coating film after drying.

[0044] <Evaluation of coating appearance> The coating was visually inspected for any smearing or fading. Table 1 shows the evaluation results.

[0045] <Fire extinguishing performance evaluation> (candle) The fire-extinguishing laminates of the examples and comparative examples were each cut into a size of 20 mm length x 20 mm width to obtain samples. The samples were held with tweezers and brought to a position 20 mm high from a candle flame. After burning, the samples were checked to see if they could be extinguished. The evaluation results are shown in Table 1. (solid fuel) The fire-extinguishing laminates of the examples and comparative examples were each cut into a size of 20 mm length x 20 mm width to obtain samples. 1 g of solid fuel was placed in a pan placed inside an aluminum container, and the solid fuel was ignited to generate a flame. The sample was held with tweezers and brought close to the burning solid fuel to a height of 20 mm. After the sample was burned, it was observed whether the fire could be extinguished. The evaluation results are shown in Table 1.

[0046] [Table 1] [Industrial Applicability]

[0047] The present invention provides a fire-extinguishing film that can be easily installed in areas where there is a risk of fire and that is highly effective in extinguishing a fire in its early stages, as well as a method for efficiently producing the same. The present invention also provides a fire-extinguishing composition, a fire-extinguishing sheet, and a fire-extinguishing molded product that have excellent fire-extinguishing performance. [Explanation of symbols]

[0048] 1...Base material (base material layer), 1a...Surface, 3...Fire extinguishing agent-containing layer, 4...Adhesive layer, 5...Release film, 6a, 6b...Surface layer, 10, 20A, 20B, 30...Fire extinguishing film (fire extinguishing laminate), X...Object

Claims

1. A resin substrate; a fire-extinguishing agent-containing layer provided on a surface of the resin substrate, the fire-extinguishing agent-containing layer including a fire-extinguishing agent component that generates an aerosol upon combustion and a binder resin; A fire-fighting laminate comprising:

2. the fire extinguishing agent component includes at least an inorganic oxidizing agent that burns together with the binder resin to generate thermal energy, and a radical generator; 2. The fire extinguishing laminate according to claim 1, wherein the decomposition starting temperature of the radical generator is in the range of 90°C to 260°C.

3. 3. The fire-extinguishing laminate according to claim 2, wherein the radical generator is at least one of a potassium salt and a sodium salt.

4. The fire extinguishing laminate according to any one of claims 1 to 3, wherein the binder resin is an epoxy resin.

5. The fire extinguishing laminate according to any one of claims 1 to 4, wherein the binder resin has water vapor barrier properties.

6. The fire extinguishing laminate according to any one of claims 1 to 5, wherein the content of the binder resin in the fire extinguishing agent-containing layer is 8 to 15 mass%.

7. The fire extinguishing laminate according to any one of claims 1 to 6, wherein the thickness of the fire extinguishing agent-containing layer is 1000 µm or less.

8. A roll of the fire extinguishing laminate according to any one of claims 1 to 7.

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