Flame-retardant and fire-retardant laminated film containing flame-retardant hot melt adhesive film

Abstract

The utility model relates to the technical field of new materials, and discloses a flame-retardant and fire-retardant laminated film containing a flame-retardant hot melt adhesive film, which structurally comprises a first layer, a second layer, a third layer and a fourth layer, the second layer is made of silicon dioxide cloth; the third layer is made of a flame-retardant hot melt adhesive film; and an adhesive compound containing an inorganic filler, in which: the adhesive is positioned between the first layer and the second layer, and the silica cloth is dip-dyed by the adhesive; the flame-retardant hot melt adhesive film is prepared by coating a flame-retardant hot melt adhesive on one side, close to the silicon dioxide cloth, of release paper or a release film and drying. The flame-retardant hot melt adhesive film is adopted to replace a second film and an adhesive to achieve the effects of blocking and heat sealing, on the basis that the functions of a flame-burning-through-resistant coating layer (flame-retardant and fire-retardant composite film) of a final product are reserved, the flame-retardant and fire-retardant composite film has the properties of weight per unit area, tensile property, water absorption, flame-burning-through-resistant performance (fire retardance), 12S vertical combustion performance (flame retardance) and the like, the process is simplified, and the production cost is reduced. And the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of new materials, in particular to a flame retardant and fire-resistant laminated film containing a flame retardant hot melt adhesive film. Background Art

[0002] Aircraft fuselages are commonly insulated with thermal and acoustic insulation materials to reduce noise entering the cabin from outside and maintain a comfortable cabin temperature. Thermal and acoustic insulation materials can (i) create a barrier to prevent or reduce heat / flame transfer, and (ii) weaken external noise to ensure cabin and cockpit comfort and conversation volume is moderate.

[0003] The Federal Aviation Administration (FAA) of the United States has issued regulations that thermal and acoustic insulation materials used in commercial aircraft must be able to prevent burn-through and flame propagation. Currently, thermal and acoustic insulation materials, including the film and the core, must be tested in accordance with Federal Aviation Regulations No. FAR25.856(a) and (b).

[0004] In the past, fiberglass wool encapsulated in a plastic moisture-proof film performed both functions. The film was composed of polyester (PET), polyvinyl fluoride (PVF) and a small amount of polyimide. Although these materials are necessary to meet the vertical Bunsen burner test, some materials can also propagate flames under certain conditions.

[0005] To this end, the applicant applied for a Chinese invention patent (publication number: CN105593016A, publication date: 2016-05-18) and a Chinese invention patent (publication number: CN116141787A, publication date: 2023-05-23) to disclose that a typical example of a flame retardant and fire-resistant laminated film includes a glass layer, a first film, a second film, and an adhesive. The glass layer may include a high-purity silica cloth. The first film and the second film need to meet the flame retardant requirements. The adhesive may include at least one inorganic filler to obtain the best fire retardant performance. The glass layer, the first film, and the second film can be connected together by adhesive and heat lamination. The outer surface of the first film or the second film can be coated with adhesive for heat sealing. However, the process of the flame retardant and fire-resistant laminated film of this structure is relatively complicated, and the cost is relatively high compared to the utility model. Summary of the invention

[0006] The utility model aims at the deficiencies of the prior art and provides a flame retardant and fireproof laminated film containing a flame retardant hot melt adhesive film. By using the flame retardant hot melt adhesive film to replace the second film and adhesive, the process is simplified and the cost is reduced. The flame retardant and fireproof laminated film of the utility model can be used in the thermal insulation and sound insulation system of commercial aircraft, or in other applications of flame retardancy and fireproofing required by current commercial aircraft. The flame retardant and fireproof laminated film can meet or even exceed the requirements and regulations of the current Federal Aviation Administration for the flammability standards of thermal insulation / sound insulation materials for transport aircraft.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0008] A flame retardant and fire-retardant laminated film containing a flame retardant hot melt adhesive film, the structure of the flame retardant and fire-retardant laminated film comprising:

[0009] The first layer, comprising a first film;

[0010] The second layer is composed of silica cloth;

[0011] The third layer is composed of a flame retardant hot melt adhesive film; and

[0012] An adhesive compound containing an inorganic filler, wherein: the adhesive is located between the first layer and the second layer, and the silica cloth is impregnated with the adhesive;

[0013] The flame retardant hot melt adhesive film is prepared by coating a flame retardant hot melt adhesive on a side of a release paper or a release film close to the silica cloth and drying the same.

[0014] Preferably, the material of the first film is selected from a series of materials: fluorine-containing polymer; silicon polymer; polyether sulfone; polyether ether ketone; polyarylether ketone; polysulfone; polyetherimide; polyetherketoneketone; polyphenylene sulfide; polyarylether sulfone; and aluminum film.

[0015] Preferably, the silica cloth is made by weaving high-purity silica roving according to the original structure of woven fabric, the density of warp and weft yarns is 15-30 strands / cm, and the silica roving is made of silica fibers bundled into many strands, and the linear mass density of each strand is between 10-25tex.

[0016] Preferably, the warp yarn and weft yarn are spaced 4-10 mm apart in the radial and weft directions and are replaced by reinforcing yarns instead of high-purity silica rovings; the reinforcing yarns are made of one of nylon, polyester, aramid, carbon fiber, high-strength polyethylene fiber, polyphenylene sulfide fiber, polyimide fiber, high-strength glass fiber, and high-purity silica roving with a linear density greater than 2 times.

[0017] Preferably, the inorganic filler is selected from antimony trioxide, mica, vermiculite, ceramic fiber, titanium dioxide, fumed silica and ultrafine silica fiber; the mesh size of the inorganic filler is between 100-600 meshes.

[0018] Preferably, the thickness of the third layer of flame retardant hot melt adhesive film is between 6-18 um.

[0019] Preferably, the thickness of the first film layer is between 3-9 um.

[0020] Preferably, the silica cloth has an area weight of 45-260 g / m2.

[0021] Preferably, the area weight of the adhesive layer is between 5 and 20 g / m2.

[0022] The utility model adopts the above-mentioned technical scheme, and adopts flame-retardant hot-melt adhesive film to replace the second layer of film and adhesive to achieve the effect of barrier and heat sealing. On the basis of retaining the flame-resistant coating layer (flame-retardant and fire-resistant composite film) function of the final product, it includes unit area weight, tensile properties, water absorption rate, flame-resistant performance (fire retardant), 12S vertical combustion performance (flame retardant) and other properties, simplifies the process and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a cross-sectional detail view of the flame retardant and fire-retardant laminated film of the present invention.

[0024] Figure 2A This is a top view of a plain glass cloth in one embodiment of the present invention. Figure 2B The figure is a top view of a patterned glass cloth in one embodiment of the present invention.

[0025] Figure 3 It is a cross-sectional view of a flame retardant adhesive in one embodiment of the present invention.

[0026] Figure 4 A flow chart for preparing a flame retardant and fire-resistant laminated film in one embodiment of the utility model DETAILED DESCRIPTION

[0027] The utility model will be further described in detail below in conjunction with the accompanying drawings: This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method is given, but the protection scope of the utility model is not limited to the following embodiments.

[0028] Figure 1 Detailed cross-sectional view of the flame retardant and fireproof laminated film 100. The flame retardant and fireproof laminated film 100 can be used as a packaging film for sound insulation and heat insulation materials on various vehicles. For example, the flame retardant and fireproof laminated film 100 can be used in various vehicles, including but not limited to airplanes, trains and ships. The flame retardant and fireproof laminated film 100 comprises a silica cloth layer 102, an adhesive 104, a first film 106 and a flame retardant hot melt adhesive film 108. In one example, the silica cloth layer 102 can be a high-temperature resistant high-purity SiO2 glass fiber cloth, and the glass fiber cloth is a multi-strand woven silica (SiO2) roving 110, such as Figure 2A , Figure 2B shown.

[0029] Generally speaking, multiple strands of high-purity silica filaments of a pre-selected diameter can be bundled into a single silica roving 110. In one example, the diameter of each filament in each silica roving 110 can be 6-20 µm. The number and diameter of the filaments ultimately determine the linear mass density (unit: tex (g / 1000m)) of the silica roving 110. The silica roving 110 is a 92-99.98% pure silica filament.

[0030] The silica cloth layer 102 can be formed by a weaving process, and in one embodiment, a flat weave is implemented. The flat weave can be called a plain weave, a linen weave or a plain fabric. In the flat weave, the warp yarn and the weft yarn can form a simple cross shape.

[0031] There are two ways to achieve the purity of silica roving. The first way is to use high-purity quartz sand for drawing.

[0032] The second method is acid washing. After the silica cloth layer 102 is woven, the silica cloth layer 102 can be immersed in an acid solution. The silica cloth layer 102 can be immersed in the acid solution until the silica filaments have reached a purity of at least 92%. The acid solution can include, but is not limited to: H2SO4 solution, hydrochloric acid solution, hydrogen bromide solution, nitric acid solution, and phosphoric acid solution.

[0033] Figure 2A This is a top view detail of a plain woven silica cloth layer 102 in one embodiment of the present invention. The detail view shows a plurality of silica rovings 110 on a flat weave. Here, the vertical silica rovings 110 are called weft yarns, and the horizontal silica rovings 110 are called warp yarns.

[0034] In one embodiment, multiple weft yarns are interwoven with multiple warp yarns. For example, a weft yarn passes over one warp yarn and then under another, and so on. Another weft yarn passes under the warp yarn that the previous weft yarn passed over, and vice versa. In some embodiments, a balanced equal-weight flat weave is used, where the number of warp and weft yarns per inch is equal in weight. In addition, the number of warp yarns may not necessarily match the number of weft yarns. For example, the former may be more than the latter, or vice versa. In one embodiment, the ratio of the number of warp yarns to the number of weft yarns is determined by fire resistance properties.

[0035] In one example, the silica cloth layer 102 can be woven when the number of warp yarns (the number of yarns per inch) and the number of weft yarns (the number of yarns per inch) are determined in advance. Generally, the density and area weight of the silica cloth layer 102 can be determined by the number of warp yarns and the number of weft yarns per inch. A higher number of warp yarns and weft yarns can produce a higher density and a larger area weight at the same roving linear density. For example, for a specified density, if a lower area weight is desired, the linear density tex of the roving should be lower. Usually, in situations where higher performance requirements are required, it is required to have a lower area weight while maintaining density. However, as the linear density tex decreases, weaving yarn breakage and other problems may occur during processing.

[0036] Some examples of the present invention adopt a mesh weaving method, such as Figure 2B As shown. In this type, the silica rovings 110 can be bundled and then woven into the warp and / or weft yarns. In general, at least two or more silica rovings 110 can be combined and then woven into a flat woven fabric. As shown, the bundled warp yarns 116 can be interwoven with the bundled weft yarns 118. Please note that Figure 2A and Figure 2B This is just for illustration purposes, not to limit you to this style.

[0037] like Figure 2A As shown, in one example, the silica cloth 102 is made by weaving silica roving 110 according to the original structure of woven fabric, the density of warp and weft is 15-30 yarns / cm, and the warp and weft are spaced 4-10mm apart in radial and weft directions. The reinforcing rib yarn 111 replaces the silica roving 110. The reinforcing rib yarn 111 is made of nylon, polyester, aramid, carbon fiber, high-strength polyethylene fiber, polyphenylene sulfide fiber, polyimide fiber, high-strength glass fiber, and the silica roving 110 with a linear density greater than 2 times.

[0038] Figure 3 Detailed cross-sectional view of a flame retardant adhesive 104 in one embodiment of the present invention. Adhesive 104 may include filler 120. In one example, adhesive 104 may be selected from a series of materials, including but not limited to polymers, copolymers and / or trimers. Any polymer selected has inherent flame retardancy, or may be modified with a flame retardant to have flame retardancy. Polymers may include but are not limited to polyvinyl chloride, polyethylene monochloroethylene, polyacrylates, polyurethanes, polyacrylamides, etc. Flame retardants may include but are not limited to tripolycyanamide, tripolycyanamide derivatives, tripolycyanamide / formalin-based resins, phosphorus compounds, phosphates, borate esters, and halogen compounds.

[0039] In one example, the adhesive 104 can be a chemically non-reactive adhesive. For example, the adhesive 104 can be, but is not limited to, an adhesive emulsion. In one example, the adhesive 104 can be a polymer suspension adhesive, in which the polymer (polymer) is suspended in a solvent (e.g., water). For example, the adhesive 104 can be soluble in water or in a solvent. In general, as the solvent evaporates, the adhesive will harden.

[0040] In one example, the adhesive 104 may be applied by dipping the silica cloth layer 102 into a container containing the liquid adhesive 104. In another example, the adhesive 104 may be pressed into the silica cloth layer 102 by one or more pressing rollers.

[0041] As previously mentioned, the adhesive 104 can be mixed with an inorganic filler. The inorganic filler 120 can account for 5-15% of the solid weight of the adhesive 104. In one example, the filler 120 accounts for 8-11% of the solid weight of the adhesive 104. The selection of the inorganic filler can be determined based on whether the fire resistance can be enhanced. The inorganic filler 120 can fill the small holes of the silica cloth layer 102, thereby enhancing the ability to block flame penetration. The inorganic filler 120 can be, but is not limited to, a sheet silicate mineral (such as a phyllosilicate). For example, antimony trioxide, mica or vermiculite can be used. Vermiculite can fill the small holes of the glass fabric, and will expand significantly when heated, thereby enhancing the ability to block flame penetration.

[0042] The particle size of the filler 120 is between 100-600 meshes. Within this range, the filler 120 has good filling capacity and makes the silica cloth layer 102 have a smooth surface after filling. In some cases, high temperature resistant microfibers (including but not limited to ceramic fibers or silica rovings) can be used as the filler 120 in the adhesive 104.

[0043] In one example, the adhesive 104 can be a water-based polyethylene monochloroethylene emulsion. Such an emulsion can use antimony trioxide as a filler 120. In another example, the emulsion uses mica as a filler 120.

[0044] In general, the adhesive 104 and filler 120 can be impregnated into the silica cloth layer 102 by dipping the silica cloth layer 102 into the adhesive 104. For example, the silica cloth layer 102 can be introduced into a tank containing the adhesive 104. In one example, the silica cloth layer 102 is introduced into a tank filled with the adhesive 104 mixed with the filler for dipping. After leaving the tank, the silica cloth layer 102 can pass through a pair of rollers. The rollers can be used to control the amount of adhesive applied to the silica cloth layer 102. The impregnated silica cloth layer 102 can then be transferred to a heating device for drying.

[0045] The first film 106 may be one of a class of high temperature resistant polymer materials, including but not limited to fluoropolymers, silicone polymers, polyethersulfone (PES), polyetheretherketone (PEEK), polyaryletherketone (PAEK), polysulfone (PSF), polyetherimide (PEI), polyetherketoneketone (PEKK), polyphenylene sulfide (PPSD) and polyarylethersulfone (PAS).

[0046] In some examples, the first film 106 can be an aluminum film, such as pure aluminum, aluminum alloy, and aluminum oxide. Generally speaking, the thickness of the first film 106 is 3-9 microns. It is worth noting that the thickness of the first film 106 can be increased or decreased as long as it does not exceed the scope of the present invention.

[0047] The flame retardant hot melt adhesive film 108 is made by coating a flame retardant hot melt adhesive on the side of the release paper or release film close to the silica cloth 102 and drying the flame retardant hot melt adhesive. The flame retardant hot melt adhesive can be a type of high temperature resistant polymer material with flame retardant added. The flame retardant hot melt adhesive can be flame retardant polyurethane hot melt adhesive, flame retardant nylon hot melt adhesive, flame retardant polyvinyl acetate hot melt adhesive, etc.

[0048] Generally speaking, the thickness of the flame retardant hot melt adhesive film 108 is in the range of 6-18 microns. It is worth noting that the thickness of the flame retardant hot melt adhesive film 108 can be increased or decreased as long as it does not exceed the scope of the present invention.

[0049] Generally speaking, if Figure 1 As shown, the impregnated silica cloth layer 102 can be sandwiched between the first film 106 and the flame retardant hot melt adhesive film 108. In special cases, we can also use a fire retardant polymer to prepare the first film 106. In another case, the first film 106 can be prepared with a fire resistant polymer.

[0050] Example 1

[0051] In this embodiment, the silica cloth layer 102 may include plain woven silica rovings, wherein the silica rovings are pure silica rovings greater than 97%. The density of the warp yarns is 24 yarns / cm and the density of the weft yarns is 23 yarns / cm, and the original warp yarns are replaced by reinforcing yarns 111 every 14 single silica rovings 110 in the radial direction, and the original weft yarns are replaced by reinforcing yarns 111 every 13 yarns in the weft direction; the reinforcing yarns 111 use silica rovings 110 with a linear density twice that of the original warp yarns and weft yarns. The silica cloth layer 102 may have a unit area weight of 59.6 g / m2. The adhesive 104 contains 90% VINNOL2752 (ethylene-vinyl chloride copolymer) water-based adhesive, 5% water-repellent agent, 1% Z6040 silane coupling agent, 0.5% dispersant and 3.5% 300 type flake mica filler.

[0052] The silica cloth layer 102 may also be impregnated with the adhesive 104. The impregnated silica cloth layer 102 may be dried by passing the silica cloth layer 102 through an oven. The silica cloth layer 102 may have a controlled impregnation weight per unit area of ​​about 64.6 g / m2.

[0053] The first film 106 is a polyether ether ketone (PEEK) film with a thickness of 3 microns. The first film 106, like the silica cloth layer 102, can be coated with an adhesive 104 solution on the surface. Generally speaking, the first film 106 can be air-dried in hot air after being coated with the adhesive 104. Normally, the coating weight of the first film 106 can be controlled to be about 8 grams per square meter. The flame retardant hot melt adhesive film 108 has a thickness of 6 microns and is prepared by coating a flame retardant polyurethane hot melt adhesive on one side of the release paper close to the silica cloth 102 and drying it. The impregnated silica cloth layer 102 can be sandwiched between the first film 106 and the flame retardant hot melt adhesive film 108, and they are fused together by means of a roller press at a pressure of 50 pounds per square inch and a temperature of 150 degrees Celsius.

[0054] Example 2

[0055] In this embodiment, a flame retardant polyvinyl acetate hot melt adhesive film is used, and other technical features are the same as those in Embodiment 1.

[0056] Comparative Example 1

[0057] This comparative example is Example 1 in the Chinese invention patent applied for by the applicant (publication number: CN116141787A, publication date: 2023-05-23).

[0058] The following is a comparison of the performance of the products of Examples 1 and 2 of the present utility model and Comparative Example 1:

[0059]

[0060] However, it should be understood that the previously disclosed embodiments are for illustrative purposes only and are not intended to be limiting. Each flame retardant and fire-retardant laminated film can be manufactured in a manner similar to the method disclosed in Example 1, the above disclosed embodiments, and the preparation method of the flame retardant and fire-retardant laminated film disclosed below.

[0061] Method for preparing flame retardant and fire retardant laminated film containing flame retardant hot melt adhesive film

[0062] Figure 4 The present invention is a flow chart for preparing a flame retardant and fireproof laminated film in one embodiment of the present invention. A manufacturing method or process 200 is described. The method 200 can achieve the lamination of a flame retardant and fireproof film. The flame retardant and fireproof film of the present invention includes a layer of silica cloth, a single adhesive layer, a first film layer and a layer of flame retardant hot melt adhesive film.

[0063] In process 202, an adhesive containing an inorganic filler is impregnated into a high temperature resistant silica cloth. For example, the adhesive can be applied to the silica cloth using one or more rollers. For another example, the silica cloth can be impregnated into an adhesive tank, and a desired amount of adhesive can be taken. In one embodiment, the adhesive can be a non-reactive adhesive. For example, the adhesive only needs to be dried to obtain adhesion. For example, the adhesive is a polymer suspension, and the polymer is dissolved in a solvent (e.g., water). Generally speaking, the inorganic filler can account for 5-15% of the solid weight of the adhesive.

[0064] In some embodiments, in process 204, the adhesive may be coated on one surface of the first film. The flame retardant hot melt adhesive may be coated on a surface of the release paper or release film on one side close to the silica cloth.

[0065] In process 206, the silica cloth and the first film can be dried by a heat source to dry the adhesive thereon. Generally, during the drying process of the adhesive, water or other solvents can be removed from the adhesive. The release paper or release film can also be dried by a heat source to dry the flame retardant hot melt adhesive thereon to obtain a flame retardant hot melt adhesive film.

[0066] In process 208, the impregnated silica cloth and the first film and the flame retardant hot melt adhesive film can be heat pressed together. Generally speaking, the silica cloth can be sandwiched between the first film and the flame retardant hot melt adhesive film.

[0067] In one embodiment, the impregnated silica cloth can be sandwiched between the first film and the flame retardant hot melt adhesive film, and the adhesive is applied to the side of the first film that contacts the silica cloth. After the three layers are placed, the silica cloth, the first film, and the flame retardant hot melt adhesive film can be heated and pressed by one or more rollers. For example, the rollers can heat and compress the three layers at the same time. According to one of the operating parameters, the rollers can apply a specific amount of pressure to the three layers. The pressure applied by the rollers can be appropriately adjusted according to the thickness of the silica cloth. Generally speaking, the desired bonding strength can be achieved by adjusting the pressure.

[0068] In one embodiment, the surface temperature of the roller can be controlled at 160-200 degrees Celsius. In another embodiment, the surface temperature of the roller is controlled at 140-150 degrees Celsius. Generally, the adhesive and the flame retardant hot melt adhesive film are activated when heated by the roller, so that the adhesive can bond the three layers together. The roller can be adjusted to heat to the temperature required to activate the adhesive or the flame retardant hot melt adhesive film.

[0069] The above is a description of the embodiments of the utility model. Through the above description of the disclosed embodiments, professionals and technicians in the field can implement or use the utility model. Various modifications to these embodiments will be obvious to professionals and technicians in the field. The general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown in this article, but will conform to the widest range consistent with the principles and novelties disclosed in this article.

Claims

1. A flame retardant and fire retardant laminated film containing a flame retardant hot melt adhesive film, characterized in that: The structure of the flame retardant and fireproof laminated film includes: A first layer, comprising a first film (106); The second layer is composed of silica cloth (102); The third layer is composed of a flame retardant hot melt adhesive film (108); and An adhesive (104) compound containing an inorganic filler, wherein: the adhesive (104) is located between a first layer and a second layer, and the silica cloth (102) is impregnated with the adhesive (104); The flame retardant hot melt adhesive film (108) is prepared by coating a flame retardant hot melt adhesive on one side of a release paper or a release film close to the silica cloth (102) and drying the same.

2. The flame retardant and fire retardant laminated film according to claim 1, characterized in that: The material of the first film (106) is selected from a series of materials: fluorine-containing polymer; silicon polymer; polyether sulfone; polyether ether ketone; polyarylether ketone; polysulfone; polyetherimide; polyetherketoneketone; polyphenylene sulfide; polyarylether sulfone; and aluminum film.

3. The flame retardant and fire retardant laminated film according to claim 1, characterized in that: The silica cloth (102) is made by weaving high-purity silica roving (110) according to the original structure of woven fabric, and the density of warp yarn and weft yarn is 15-30 yarns / cm. The silica roving (110) is made by bundling silica fibers into a plurality of strands, and the linear mass density of each strand is between 10-25 tex.

4. The flame retardant and fire retardant laminated film according to claim 3, characterized in that: In the radial and weft directions, warp yarns and weft yarns are spaced 4-10 mm apart and are replaced by reinforcing rib yarns (111) to replace high-purity silica rovings (110); the reinforcing rib yarns (111) are made of one of nylon, polyester, aramid, carbon fiber, high-strength polyethylene fiber, polyphenylene sulfide fiber, polyimide fiber, high-strength glass fiber, and high-purity silica rovings (110) having a linear density greater than 2 times.

5. The flame retardant and fire retardant laminated film according to claim 1, characterized in that: The inorganic filler is selected from antimony trioxide, mica, vermiculite, ceramic fiber, titanium dioxide, fumed silica and ultrafine silica fiber; the mesh size of the inorganic filler is between 100-600 meshes.

6. The flame retardant and fire retardant laminated film according to claim 1, characterized in that: The thickness of the flame retardant hot melt adhesive film (108) is between 6 and 18 um.

7. The flame retardant and fire retardant laminated film according to claim 1, characterized in that: The thickness of the first film (106) is between 3 and 9 um.

8. The flame retardant and fire retardant laminated film according to claim 1, characterized in that: The silica cloth (102) has an area weight of 45-260 g / m2.

9. The flame retardant and fire retardant laminated film according to claim 1, characterized in that: The area weight of the adhesive (104) layer is between 5 and 20 g / m2.

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