JP2009023198A - Fireproof film, fireproof glass, and method of imparting fireproof function to product requiring fire protection - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fireproof film which can impart fireproof function to a product (float glass etc.) requiring fire protection easily and securely, and a fireproof glass with the fireproof film, and a method of imparting the fireproof function to the product requiring fire protection. <P>SOLUTION: This fireproof film 1 is laminated on the surface of the product requiring fire protection to impart the fireproof function to the product, and can be obtained by integrally laminating an expandable heat insulating layer 3 on a resin-based film 2. In addition, the expandable heat insulating layer 3 is formed including an expandable heat insulating material which becomes foamed by heat, and further, a release paper 4 is releasably applied to one surface 3a of the surfaces, of the product requiring fire protection, where the expandable heat insulating layer 3 is formed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fireproof film for attaching fireproof performance to a fireproof material by sticking to the surface of the fireproof material such as glass, fireproof glass formed by sticking the fireproof film to glass, and fireproofing of the fireproof material. It relates to a performance imparting method.

  Conventionally, float glass has been frequently used for glass windows, glass doors, glass walls and the like of buildings such as ordinary houses and office buildings. However, while this float glass has the great advantage of being inexpensive, it is easy to crack and fall off when heated at a high temperature in the event of a fire, and it cannot be expected to suppress the spread of fire by blocking flames and smoke. There were drawbacks.

  On the other hand, for example, a mesh-like wire is embedded in the glass window, glass door, glass wall, etc. of the building so that the glass is held by the wire and does not fall off even if cracks occur in the event of a fire. In many cases, a heat-strengthened glass having excellent heat resistance is formed by forming a meshed glass or a pure silicic acid anhydride as a component. However, while meshed glass and heat-resistant tempered glass can prevent the glass from falling off and suppress the spread of fire, it is very expensive compared to float glass, and radiant heat in the event of a fire. May pass through the glass and propagate from the fire side to the non-fire side, causing fire spread. In addition, in a glass with a mesh, since a mesh-like wire embedded in the glass can be seen during normal use, the effects originally expected for this type of glass, such as the feeling of openness of the space and the continuity between the spaces, are impaired. There was a problem.

On the other hand, there is a fireproof glass constructed by interposing a transparent foaming heat insulating material such as sodium silicate between a pair of adjacent glasses to form a multilayer glass (for example, Patent Document 1, Patent Document 2, Patent Document 3). reference). In this fireproof glass, when heated at a high temperature in the event of a fire, the foaming insulation foams and exhibits flameproofing properties, so it is possible to prevent the non-fire side glass from cracking in particular and to suppress the spread of fire Is possible. In addition, the transparent foaming insulation foams and changes to opaque, which prevents the radiant heat from propagating from the fire side to the non-fire side and ensures that there is no fire spread on the non-fire side. Can be prevented from expanding.
JP-A-57-183338 JP 58-451141 A Japanese Patent Laid-Open No. 3-40944

  However, since the conventional fireproof glass is configured to include a plurality of glasses and a foaming heat insulating material interposed between adjacent glasses, for example, the thickness becomes as large as 20 mm or more. It was difficult to use a single-layer float glass of the order of several millimeters.

  In addition, when adding fire resistance (fireproof performance) to existing buildings that use float glass for glass windows, glass doors, glass walls, etc., all existing float glass must be replaced with fireproof glass. Since the conventional fireproof glass is expensive, an economical burden is increased. For this reason, there has been a strong demand for a technique that imparts fireproof performance to existing float glass (refractory) and economically improves the fireproof performance of the building.

  In view of the above circumstances, the present invention is directed to a fireproof film capable of easily and reliably imparting fireproof performance to a fireproof object (float glass or the like), a fireproof glass formed by attaching the fireproof film, and a fireproof object. An object of the present invention is to provide a method for imparting fire resistance.

  In order to achieve the above object, the present invention provides the following means.

  The fireproof film of the present invention is a fireproof film for applying fireproof performance to a fireproof material by being attached to the surface of the fireproof material, and is formed by integrally laminating a foam heat insulating layer on a resin film. It is characterized by.

  In this invention, since a foamable heat insulating layer containing a foamable heat insulating material such as sodium silicate is integrally laminated on the resin film, the fireproof film is attached to the surface of the fireproof material by attaching the fireproof film to the fireproof material. It becomes possible to give fireproof performance to things. And, by sticking this fireproof film to, for example, one or both surfaces of the existing float glass in the building (the surface of the refractory material), it is possible to prevent the float glass from cracking and falling off in the event of a fire, and to suppress the spread of the fire It becomes possible. Moreover, since it becomes possible to block a radiant heat and smoke by a foaming heat insulation layer foaming by the heating at the time of a fire, it can prevent reliably that a fire spread on the non-fire side.

  Moreover, in the fireproof film of the present invention, the foamable heat insulating layer is formed including a foamable heat insulating material that foams by heating, and is attached to the surface of the fireproof material of the foamable heat insulating layer. It is desirable that release paper is provided so as to be peelable.

  In this invention, at the time of application to the refractory material, the release paper is peeled off, and one surface of the foam heat insulating layer is attached to the surface of the refractory material. It becomes possible.

  The fireproof glass of the present invention is characterized in that a fireproof film formed by integrally laminating a foam heat insulating layer on a resin film is adhered to the surface of the glass.

  In the present invention, it is possible to reliably form a fire-proof glass having excellent fire-proof performance by integrally attaching a fire-proof film to the surface (one side or both sides) of glass such as float glass.

  The method for imparting fireproof performance to a fireproof material of the present invention is a method of attaching a fireproof film formed by integrally laminating a foam heat insulating layer to a resin film on the surface of the fireproof material, and providing fireproof performance to the fireproof material. It is characterized by giving.

  In this invention, since a fireproof film is constructed by integrally laminating a foamable heat insulating layer on a resin film, the fireproof performance is surely imparted to the fireproof object by attaching the fireproof film to the fireproof object. It becomes possible to do. And, by sticking this fireproof film to, for example, one or both surfaces of the existing float glass in the building (the surface of the refractory material), it is possible to prevent the float glass from cracking and falling off in the event of a fire, and to suppress the spread of the fire It becomes possible. Moreover, since it becomes possible to block a radiant heat and smoke by a foaming heat insulation layer foaming by the heating at the time of a fire, it can prevent reliably that a fire spread on the non-fire side.

  According to the method for imparting fireproof performance to the fireproof film and the fireproof material of the present invention, the fireproof performance can be reliably imparted to the fireproof material by a simple operation of attaching the fireproof film. As a result, even when fire resistance (fireproof performance) is imparted to an existing building, the fireproof performance is imparted by attaching a fireproof film to existing float glass or the like without replacing the conventional expensive fireproof glass. It is possible to greatly reduce the economic burden.

  In addition, according to the fire-proof glass of the present invention, it is possible to form fire-resistant glass with excellent fire-proof performance at a low cost by attaching a fire-proof film integrally to the surface (one side or both sides) of glass such as float glass. Become. Thereby, in order to give fire resistance performance (fire prevention performance) to the existing building, even when the existing float glass is replaced with fire prevention glass, it is possible to greatly reduce the economic burden.

  Hereinafter, with reference to FIG. 1 to FIG. 3, a method for imparting fireproof performance to fireproof films, fireproof glass, and fireproof materials according to an embodiment of the present invention will be described. For example, the present embodiment can easily and surely impart fireproof performance to float glass (fired objects) frequently used for glass windows, glass doors, glass walls, etc. of buildings such as ordinary houses and office buildings. The present invention relates to a possible fireproof film, a fireproof glass on which the fireproof film is pasted, and a method for imparting fireproof performance to glass.

  As shown in FIG. 1, the fireproof film 1 of the present embodiment is formed by integrally laminating a foamable heat insulating layer 3 on a resin film 2, and a release paper 4 is provided on one surface 3 a of the foamable heat insulating layer 3 so as to be peelable. Is configured.

  The resin film 2 is a transparent (or colored) film sheet, and is formed using, for example, polycarbonate, polyester, polypropylene, polyamide, polyimide, polyetherimide, or the like. In addition, the resin film 2 of the present embodiment is, for example, several tens to several hundreds so as not to impair the thickness of the workability at the time of application to the float glass, that is, the flexibility of the fire protection film 1. It is formed with a thickness of about μm. Further, the resin film 2 is supposed to melt when heated at a temperature of around 100 ° C.

  On the other hand, the foamable heat insulating layer 3 is configured to include transparent sodium silicate (foamable heat insulating material) and is formed with a thickness of about 1 mm. And when this foamable heat insulation layer 3 is heated at the temperature of about 100 degreeC, a sodium silicate foams and exhibits heat insulation, At this time, a transparent sodium silicate foams and changes to opaque. In addition, the thickness of the foamable heat insulation layer 3 should just be suitably determined in the range which can exhibit desired heat insulation (fireproof performance, fireproof performance).

  As shown in FIG. 2, the fireproof film 1 of the present embodiment configured as described above peels off the release paper 4 attached to one surface 3 a of the foamable heat insulating layer 3, and one surface 3 a of the foamable heat insulating layer 3. Are attached to the surfaces G1 and G2 of the existing glass (float glass, refractory) G such as glass windows, glass doors, and glass walls of the building. It is attached so as to cover (a method for imparting fireproof performance to a fireproof material). At this time, the foamable heat insulating layer 3 is protected by the resin film 2 disposed on the outer surface side, and the foamable heat insulating layer 3 is held in a suitable water retaining state. Thereby, as for the foamable heat insulation layer 3, the foaming performance by a foamable heat insulating material is reliably maintained over a long period of time. That is, the foamable heat insulating layer 3 is protected by the resin film 2 so as not to cause functional deterioration. In FIG. 2, the fireproof film 1 is attached to both sides G1 and G2 of the existing glass G, but the fireproof film 1 of the present embodiment is attached to one surface (one side) G1 of the existing glass G. You may make it attach.

  For example, when a fire occurs in a building, the fire side fire prevention film 1 is heated before the glass G. The fire side fire prevention film 1 reaches a temperature of about 100 ° C. and the resin film 2. Is melted, and the foamable heat insulating layer 3 is foamed by heating at around 100 ° C., and its thickness is increased to start exhibiting flame shielding and adhesion (fireproof performance). At this time, since the resin film 2 is melted by heating at a temperature of about 100 ° C. at which the foamable heat insulating layer 3 starts to foam, the foamable heat insulating layer 3 is reliably prevented from being hindered by foaming. The foaming of 3 exhibits flameproofness and adhesion. And even when heated at a high temperature close to 800 ° C. from the fire side, the heat is blocked by the foamed heat insulating layer 3, and the glass G is prevented from being damaged due to the fire. On the other hand, when the glass G is continuously heated at a high temperature close to 800 ° C. for a long time, the glass G may be cracked. However, the foamable heat insulating layer 3 adheres to the surface G1 of the glass G, and the foaming occurs. As a result, the foamable heat insulating layer 3 enters the cracks, so that the glass G is reliably prevented from falling off. Thereby, a flame and smoke are interrupted | blocked reliably and it is suppressed that a fire spreads to the non-fire side. At this time, the foamable heat-insulating layer 3 changes from transparent to opaque with foaming, so that radiant heat and smoke are also blocked, and the spread of fire on the non-fire side is prevented.

  Therefore, with a simple method of sticking the fireproof film 1 of the present embodiment to the surfaces G1 and G2 of the existing glass G, fireproof performance is easily and surely imparted, and breakage of the glass G during a fire is prevented. The spread of fire is surely suppressed.

  Here, FIG. 3 shows that the fire prevention film 1 of the present embodiment is attached to a glass (float glass) G having a thickness of 6 mm, and the fire prevention film conforms to JIS A 1304 “Fireproof test method for building structure part”. The result of evaluating the performance is shown. In FIG. 3, Case 1 is a test body (fire glass) in which a fire-resistant film 1 in which the thickness of the foamable heat insulating layer 3 is 0.8 mm is attached to both surfaces G 1 and G 2 of the glass G, and Cases 2 to 4 are foamed The test result with respect to the test body (fireproof glass) which affixed the fireproof film 1 which made the thickness of the heat insulation layer 3 2.0mm, 1.2mm, and 0.8mm respectively on the single side | surface G1 of the glass G is shown. . In this test, each specimen is heated according to the standard heating curve of JIS A 1304, and the elapsed time from the start of heating until the glass G falls off is measured and evaluated.

  And as shown in FIG. 3, the fireproof film 1 in which the thickness of the foamable heat insulating layer 3 is 0.8 mm and the fireproof film 1 in which the thickness of the foamable heat insulating layer 3 and the Case 1 in which the fireproof film 1 is pasted on both sides G1 and G2 are 2.0 mm. In Case 2 where the film 1 was bonded to one side G1, it was confirmed that the glass G did not fall off until an elapsed time of 25 minutes when heated at a high temperature exceeding 800 ° C. Further, in Case 3 and Case 4 in which the fire-resistant film 1 having a thickness of the foamable heat insulating layer 3 of 1.2 mm and 0.8 mm is attached to one side G1, the glass G is heated up to 20 minutes after being heated at a high temperature close to 800 ° C. It was confirmed that no omission occurred. Therefore, it has been proved that the fire prevention performance of the glass G can be significantly improved by attaching the fire prevention film 1 of the present embodiment to the surfaces G1 and G2 of the glass G based on such a test.

  Therefore, in the fireproof film 1 and the method for imparting fireproof performance to the glass (fired object) G of the present embodiment, the fireproof film 1 formed by integrally laminating the foamable heat insulating layer 3 on the resin film 2 is used in the existing building. By sticking to the surfaces G1 and G2 of the float glass G, it is possible to prevent the float glass G from cracking and falling off at the time of a fire, and to easily and reliably suppress the expansion of the fire. Moreover, since the foamable heat insulating layer 3 is foamed by heating at the time of fire and it is possible to block radiant heat and smoke, it is possible to more reliably prevent the spread of fire on the non-fire side.

  At this time, the foamable heat insulating layer 3 is formed to include a foamable heat insulating material that is foamed by heating, and the release paper 4 is provided on the one surface 3a of the foamable heat insulating layer 3 so as to be peeled off. At the time of attaching, the fireproof performance can be reliably imparted to the float glass G by a simple operation of peeling the release paper 4 and attaching the one surface 3a of the foamable heat insulating layer 3.

  As a result, even when fire resistance (fireproof performance) is imparted to an existing building, fireproof performance is imparted by attaching the fireproof film 1 to the existing float glass G without replacing the conventional expensive fireproof glass. This makes it possible to greatly reduce the economic burden.

  Moreover, a fire prevention glass 1 can be formed by sticking the fire prevention film 1 on the float glass G. At this time, the fire prevention film 1 is an inexpensive sodium silicate (foaming heat insulating material) that is about a fraction of the float glass G. Therefore, it becomes possible to form fire-proof glass at low cost.

  Furthermore, since the fireproof film 1 is transparent, a mesh-like wire embedded in the glass can be seen like a conventional glass with a mesh, and the open feeling of space required for the glass window, glass door, glass wall, etc. of the building is visible. In addition, fire resistance can be suitably imparted to the float glass G without impairing the continuity between the spaces.

  Moreover, when such a fire-resistant film 1 is affixed so that the surfaces G1 and G2 of the float glass G may be coat | covered, when not only the fire-proof performance at the time of a fire but the float glass G cracks at the time of the occurrence of an earthquake, etc. Moreover, the effect which prevents scattering of this float glass G is also exhibited.

  As mentioned above, although the fireproof film which concerns on this invention, fireproof glass which affixes this fireproof film, and embodiment of the fireproof performance provision method to a to-be-fired material were demonstrated, this invention is limited to said one Embodiment. Instead, it can be changed as appropriate without departing from the spirit of the invention. For example, in the present embodiment, the fire prevention film 1 is attached to the existing glass G of the building, and the fire prevention performance is imparted to the existing glass G. However, the fire prevention film 1 is attached to the float glass G individually. It is also possible to form fireproof glass and to replace the fireproof glass with the existing glass G of the building to give fireproof performance to the building. In this case, since the fireproof glass excellent in fireproof performance can be formed by a simple operation of attaching the fireproof film 1 to the inexpensive float glass G, the existing glass G in the building is replaced with fireproof glass. Even when fire resistance is imparted to a building, the economic burden can be greatly reduced.

  Moreover, in this embodiment, although the fireproof material which affixes the fireproof film 1 and provides fireproof performance shall be the float glass G, the fireproof film 1 which concerns on this invention, and the fireproof performance provision method to a fireproof material May be attached to a refractory material other than the float glass G to impart fireproof performance to the refractory material. Furthermore, the fireproof glass according to the present invention may be configured by attaching the fireproof film 1 to a glass other than the float glass G.

  In the present embodiment, the foamable heat insulating layer 3 of the fireproof film 1 is formed including a foamable heat insulating material, and the release paper 4 is provided on one surface 3a of the foamable heat insulating layer 3. The fireproof film of the present invention does not necessarily have to be provided with the release paper 4, and an adhesive may be applied and pasted onto the surface 3a of the foamable heat insulating layer 3 or the surface of the fireproof material. Furthermore, in this embodiment, although the foamable heat insulating material of the foamable heat insulation layer 3 was demonstrated as what is a sodium silicate, if foaming by heating and exhibiting heat insulation are possible, other foamability is possible. It may be a heat insulating material.

It is a figure which shows the fire prevention film which concerns on one Embodiment of this invention. It is a figure which shows the fire prevention glass formed by affixing the fire prevention film which concerns on one Embodiment of this invention. It is a figure which shows the test result which evaluated the fire prevention performance of the fire prevention film which concerns on one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fire prevention film 2 Resin-type film 3 Foaming heat insulation layer 3a One side 4 Release paper G Float glass (fireproof material)
G1 surface G2 surface

Claims (4)

A fire-resistant film for attaching to the surface of the refractory material and imparting fire-proof performance to the refractory material,
A fireproof film comprising a resin film and a foamable heat insulating layer laminated integrally. The fire protection film according to claim 1,
The foamable heat insulating layer is formed to include a foamable heat insulating material that is foamed by heating, and a release paper is provided on the surface of the foamable heat insulating layer that is attached to the surface of the refractory to be peelable. A fireproof film characterized by that.   A fireproof glass comprising a fireproof film formed by integrally laminating a foam-based heat insulating layer on a resin film, and affixed to the surface of the glass.   A fireproof film formed by integrally laminating a foam heat insulating layer on a resin film on the surface of the fireproof object, and providing fireproof performance to the fireproof object, Performance grant method.

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