ES2678002T3 - Fire protection curtain - Google Patents

Abstract

Fire or smoke protection curtain with at least one fire protection element (10), comprising (a) a flexible support (14) and (b) cooling material (18), which is applied on the support ( 14) and reacts above an activation temperature with heat absorption, as well as (c) an organic binder (16), with which the cooling material (18) joins the flexible support (14) so that the fire protection element (10) is flexible and forms a matrix for the cooling material (18) and (d) with the binder (16) having a degradation temperature of the binder (T16) that differs from the temperature of maximum activation in 150 kelvin (e) by applying the cooling material and the binder in the form of a flexible layer on the flexible support.

Description

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FIRE PROTECTION CURTAIN DESCRIPTION

The invention relates to a fire protection element with a flexible support and with cooling material, which is applied on the support and above an activation temperature reacts with heat absorption.

Such fire protection elements are used for example in fire and smoke protection curtains and serve to prevent the spread of a fire or smoke. Fire protection elements must withstand very hot conditions as long as possible and in this respect be as light and thin as possible.

From EP 2 158 007 it is known that sodium silicate can be applied on a textile support material, to thereby increase the fire resistance of the textile. It is disadvantageous that the fire protection textile thus treated is only produced in a very difficult manner and has to be processed in a fire protection curtain.

EP 0 090 635 A2 describes a fire barrier, which can be used for wrapping tubular conduits or cables and for safety curtains. The fire barrier comprises a support, for example of glass fibers, which is impregnated with heat absorbing reactant material. The fire barrier is not suitable for curls and current unwinds.

From DE 196 55 253 B4 a fire protection curtain is known which has two layers of fire protection textile that are close to each other, so that they form an intermediate space. In this intermediate space the fireproof material is present. It is disadvantageous in a fire protection curtain of this type that is comparatively thick.

Document GB 2 377 379 is known for a fire protection curtain that has intumescent material. Such a curtain reaches comparatively high temperatures on the opposite side of the fire in case of fire, which may not be desired.

In US 2012/0315457 A1, glass wool is disclosed, which in addition to the intumescent material also presents substances that react endothermically with the effect of heat. This material is not suitable for a fire or smoke protection curtain, as it is not low wear with several curls and unwinds.

From DE 10 2008 045 588 A1 a band of material is known, in particular for fire protection suits. The web of material has a support of a polymer on which the flame inhibitor material is applied.

EP 2 520 337 B1 describes a fire or smoke protection curtain of the type in which the cooling material is applied by scratching. In these it is problematic that the curtain is not e under wear with several curls and unwinds, since the cooling material is easily chipped.

The invention is based on the objective of avoiding the disadvantages of the state of the art.

The invention solves the problem by means of a fire or smoke protection curtain according to claim 1. In this regard the organic binder is bonded with the cooling material so that the fire protection element is flexible.

The invention is based on the knowledge that pure insulation is not sufficient to achieve long-lasting fire protection from a fire or smoke protection curtain, which contains a fire protection element. The experiments to date of equipping a fire protection element with a nigid cooling material were not successful, since the resulting material is not flexible or can release flammable gases.

It is advantageous in this fire protection element that can be used properly in the production of fire or smoke protection curtains. That the fire protection element is flexible allows for example winding on a winding axis, without damage. It is therefore possible to roll and unwind the fire protection textile several times, as is necessary in the use in a fire or smoke protection curtain for testing purposes.

The comparatively simple production of the fire protection element is additionally advantageous. The organic binder and the cooling material allow mixing in a paste that is applied

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Automated on the support. It is therefore possible to produce the fire protection element in a continuous process. If, for example, a fire protection element of a predetermined size is required for the production of a fire or smoke protection device, this fire protection element can be produced from the pre-fabricated band simply by cut. The cutting of the cooling material in the form of a rod is suppressed as well as the arrangement thereof.

It is expected that the use of an organic binder is disadvantageous, since the organic material may represent a fire load. However, it follows that this disadvantageous effect is clearly overcompensated because the use of the organic binder can be performed on thick and flexible layers of cooling material on the support. The cooling effect caused by the cooling material is in this respect greater than the heat that can be generated by a chemical reaction of the organic binder. With the proper choice of the binder, it can also be avoided that mainly the inflammation of the binder or the degradation gases of the binder is reached.

Within the framework of the present description it is understood with a fire or smoke protection curtain in particular a device that is configured to prevent or inhibit in a sustained manner the spread of fires and / or smoke or prevent the smoke produced from spreading by a fire In particular, a fire or smoke protection device is configured to resist a fire for at least 30 minutes, in particular at least 60 minutes, preferably at least 90 minutes. This test is carried out in particular according to DIN EN 13501-2 and 3. A fire or smoke protection device is therefore fundamentally differentiated from devices that are suitable only for closing openings.

With the activation temperature, it is understood in particular the lowest temperature for which it is the case that after one hour at this temperature more than 90 percent by mass of the cooling material has reacted with heat absorption. It is favorable that the cooling material reacts above the activation temperature, for example, by detachment of water from crystallization and / or with water excision. The water has a high heat of evaporation so that evaporation absorbs a lot of heat. The activation temperature is preferably at least 90 ° C, in particular at least 240 ° C. Preferably the activation temperature is 300 ° C.

With the cooling material, it is understood in particular a material that, above the activation temperature, releases water and / or carbon dioxide by means of an endothermic reaction. The cooling material may be a pure substance or a mixture. For example, the cooling material contains at least partially crystallization water. The cooling material may contain metal hydrate and / or carbonate and / or a hydroxide compound, in particular aluminum trihydrate.

With the flexible support, an object that can be folded is understood. In particular, the support is configured so that in the winding with a radius of curvature of at least 10 cm there was no significant plastic deformation. The flexible support preferably comprises a fire protection textile. Alternatively or additionally, the flexible support comprises a metal foil and / or a knit, gender or metal fabric.

With a fire protection textile we mean a fabric, knitwear, knitted fabric, gender or flexible napa, non-combustible, heat resistant. Obviously, the fire protection textile can also comprise two or more structures, for example, both a fabric and a nappa. The fire protection textile is configured so that it sufficiently resists temperature loads for a long time, resisting the passage of flames and / or smoke, particularly for at least 30 minutes according to DIN EN 13501-2 and 3 and / or DIN EN 12101-1, Advantageously with the use of fire protection textiles there is low manufacturing cost. It is also possible to produce the fire protection element from one, two, three, or several textile pieces of flat fire protection, by joining, particularly sewn. It is possible and represents a preferred embodiment for the fire protection textile to present wires of a stable material up to a temperature of at least 900 ° C, particularly steel wires. It is evidenced as especially suitable stainless steel.

Care should be taken that it is possible, but not necessary, for the support to be composed of an elastic material. In particular, it is favorable that the support is flexible but not elastic. The fire protection element can also be used advantageously if the support is both flexible and elastic. A flexible elastic support leads to a good drapability of the fire protection element, so that it can be arranged without folds along curved surfaces. In particular, the support can be folded.

Preferably the ductility of the fire protection element is so small that a force of 100 kN in a fire protection element leads from a meter wide to three meters high to a relative length below five millimeters.

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In particular, the support is configured so that it leads to winding several thousand times on a winding axis with a diameter of 10 cm so that a maximum of five percent of the cooling material of the support is detached.

In addition, it is possible that the fire protection element has two, three, four or more flexible supports, which can be independently attached to each other or to each other.

With the activation temperature, it is understood in particular the lowest temperature for which it is the case that after one hour at this temperature more than 90 percent by mass of the cooling material has reacted with heat absorption. It is favorable that the cooling material reacts above the activation temperature, for example, by detachment of water from crystallization and / or with water excision. The water has a high heat of evaporation so that evaporation absorbs a lot of heat.

A binder means a substance that binds with the support and the cooling material, so that it forms a flexible layer on the support. With an organic binder it is understood in particular a binder that is composed of at least one organic substance, an organic substance being a carbon compound or an organic silicon compound. According to a preferred embodiment, the organic binder is a carbon compound. If hereinafter a binder is indicated, this means both pure substances and mixtures.

Preferably the binder is a polymer. It is favorable that the binder contains a polyacrylate, in particular the binder is composed in reference to the mass percentage at least. For example, the binder contains at least mostly poly (vinyl acetate). It is favorable that the binder contains ethylvinyl acetate. For example, the binder contains at least 15 mass percent vinyl acetate.

With the cooling material, it is understood in particular a material that, above the activation temperature, releases water and / or carbon dioxide by means of an endothermic reaction. The cooling material may be a pure substance or a mixture. For example, the cooling material contains at least partially crystallization water. The cooling material may contain metal hydrate and / or carbonate and / or a hydroxide compound. The binder has a binder degradation temperature that differs from the activation temperature of a maximum of 100 kelvin, preferably a maximum of 50 kelvin, in particular a maximum of 25 kelvin.

The degradation temperature of the binder means the lowest temperature for which after one hour at this temperature there is a loss of mass of at least 15 percent by mass.

If a binder with an especially high degradation temperature is used to maintain the mechanical cohesion of the cooling material for as long as possible, this can lead to all cooling material reacting with heat absorption and then degradation of the binder. . In this degradation, combustible gases can be generated, which are prone to high temperatures due to partially sudden combustion.

However, if the degradation temperature of the binder is found sufficiently close to the activation temperature, then the binder degrades on the surface of the layer of the cooling material, reacting endothermically the cooling material and releasing in this respect for example vapor of Water. Water vapor mixes with degradation gases. The ignition temperature of this mixture is clearly above the ignition temperature of the degradation gases. The mixture can therefore leave the fire protection element without the degradation gases being ignited. The previous degradation that takes place of the binder therefore leads against low intuition to a low risk of fire and thus to a lower fire load of the organic binder.

It is especially favorable that the degradation temperature of the binder is higher than at the activation temperature. The degradation of the binder is first achieved when the cooling effect of the cooling material has already been largely exhausted. Care should be taken that the cooling material and the binder are applied in the form of a flexible layer on the flexible support, this layer preferably having a thickness of at least 0.2 mm, in particular at least 1 mm.

With the effect of heating from the outside, the layer in front of the thermal source reacts first. If the cooling material loses its cooling effect, the temperature in the layer increases and the binder degrades. A temperature gradient is also formed in the layer of cooling material, which leads to the maintenance of mechanical stability and at the same time the degradation gases are mixed with non-combustible gases, which are generated in the endothermic reaction of the medium of cooling. The binder forms a matrix for the cooling material. In the cooling material it can be, for example, a granulate of brittle material. In this case, the individual particles of the granulate are joined together by means of the binder, so that the binder and the cooling material form a flexible cooling layer on the support. In other words, the cooling material is embedded in a binder matrix.

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It is favorable that a surface mass of cooling material of the cooling material is at least 1.5 times a surface mass of the support. The surface mass of the cooling material refers to the weight of cooling material on the surface in the flexible support, on which it is applied. It is especially favorable that the surface mass of cooling material is at least twice the surface mass of the support. A high surface mass of cooling material without the use of an organic binder is not economically useful according to the state of current knowledge and does not lead to a flexible product.

Preferably a degree of filling of the cooling material reaches at least 50 percent by mass, in particular at least 60 percent by weight. The degree of filling of the cooling material is the ratio of the mass of the cooling material in a predetermined surface section of the flexible support as a denominator and the total mass of the cooling and binding material in the surface section as a numerator.

It is especially favorable that a proportion of cooling material in the fire protection element is at least 50 percent, in particular at least 60 percent. The proportion of cooling material is the ratio of the mass in cooling material in a predetermined part of the fire protection element as a denominator and the total mass of this section of the fire protection element as a numerator. A higher proportion of cooling material determines a strong cooling effect of the fire protection element.

It is favorable that a coverage of specific surface cooling material accumulated is at least 0.5 kilograms per square meter, in particular at least 1.5 kilograms per square meter of the fire protection element. With coverage of specific cooling material by accumulated surface, the mass of cooling material referred to as a fire protection element per square meter is understood, regardless of the amount on the supports. In this way, high coverages of cooling material can be achieved with the prior art procedures only with the use of a plurality of supports.

It is favorable that the fire protection element has a thermal absorption of at least 2000 kJ / m2. This high thermal absorption makes it possible to resist a prolonged fire. It is also advantageous that a fire or smoke protection curtain with a fire protection element of this type is valid without intumescent material.

Preferably the fire protection element comprises a first flexible insulation element, in particular a first insulation layer, whose heat transfer coefficient is a maximum of 8 watts per square meter, and a second flexible insulation element, so In particular, a second insulation layer, whose heat transfer coefficient is a maximum of 8 watts per square, the cooling material being arranged between the cooling elements. Attention should be paid that it is possible that cooling materials may also be arranged outside the insulation elements, it being significant that at least cooling material is also arranged between the insulation elements.

It is advantageous in a fire protection element of this type that the insulation element prevents rapid heating of the cooling material. If the heat front is advanced by the insulating element, the cooling material inhibits the additional heating so that on the face opposite to the fire of the cooling material the temperature does not increase essentially above the activation temperature of the cooling material. This is achieved with aluminum trihydrate, which according to a preferred embodiment is at least the main component of the cooling material, 260 ° C. But it is permissible according to the relevant standard only a maximum temperature of 160 ° C. The second insulation layer leads to this temperature not being exceeded.

With the insulation layer is understood an insulation element that is directly connected with the support. It is especially favorable that the insulating element has a mineral wool, for example glass wool or rock wool. Alternatively or additionally, the insulation element may comprise ceramic phases.

Preferably the first flexible insulation element comprises a mineral fiber mat. Alternatively or additionally, the second flexible insulation element comprises a mineral fiber mat.

It is favorable that a thermal conductivity of the insulation elements be a maximum of 0.04 watts per kelvin and meter. In this case, the insulation element can be generated fine. It is favorable that the thickness of the insulation element is at least 6 cm, clearly higher thicknesses are possible and are comprised of indications according to the invention, but they can be disadvantageous, since they lead to a thick fire protection element, That is not desirable.

Preferably the fire protection element comprises a second support, which has a fire protection textile, the cooling material being arranged between the first part and the second

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part. In particular, the insulation elements are also arranged between the supports. It is especially favorable that the fire protection element is constituted symmetrically.

According to a preferred embodiment, the fire protection element has a first textile element, comprising fire protection textile, and a second textile element, comprising fire protection textile, the insulation elements being arranged between the textile elements. . For example, the first insulation element is fixed in the first textile element and / or the second insulation element in the second textile element.

Preferably, the first textile element has a first metal sheet on the wall giving the first insulation element and / or the second textile element has a second metal sheet on the wall opposite the second insulation element. A metal sheet of this type, which is preferably an aluminum sheet, prevents thermal radiation, which occurs on the insulation element and additionally prevents the passage of air through the fire protection element.

According to a preferred embodiment, the first textile element has a coating that ceramizes at a ceramization temperature, which is greater than 300 ° C, so that the first textile element is airtight. This coating can be for example a silicone layer. The coating melts above the ceramization temperature at least partially. In this way, the first textile element is also airtight above the ceramization temperature. With the characteristic that the support is airtight to ventilation, it is particularly understood that a maximum of 10 liters of air per second pass through the support with a pressure difference of 10 hectopascals per square meter of the support. Obviously it is possible that the first textile element is also airtight before reaching it. Preferably also the second textile element has such a coating.

Preferably the caloric power of the fire protection element is a maximum of zero joules per square meter. In particular, the oxidation of all the components of the fire protection element with oxygen from the air leads to a release of heat, which is overcompensated with the heat absorption of the cooling material. In this way it is possible and represents a preferred embodiment that without any temperature or at any time leads to a possible oxidation of components of the fire protection element with oxygen from the air, so that more heat is released by the oxidation that which is absorbed by the cooling material. With the characteristic that at no time the aforementioned requirement is met, it is understood in particular that it can be averaged over a three minute interval. For example, the heat that is released by any oxidation is averaged for three minutes and from there the heat absorbed by the cooling material is subtracted. The determined asf value is always at maximum zero. In other words, the fire protection element does not preferably represent any fire load.

According to a preferred embodiment, the support comprises a layer of fire protection textile, on which the cooling material is applied, and a layer of metal foil, in particular a layer of aluminum foil, the textile fabric being arranged fire protection between the cooling material and the metal sheet layer. This presents, on the one hand, the advantage that in the endothermic reaction of the cooling material gases that are generated are generated at least mostly, in particular at least 90%, in one direction. On the other hand, the metal sheet layer leads to a comparatively smaller amount of heat being achieved by thermal radiation in the fire protection textile. To further reduce the contact surface between the metal sheet and the fire protection textile, it is provided according to a preferred embodiment that the metal sheet layer has a pattern. If the heat of the faces of the metal sheet layer acts then the fire protection textile is heated and thereby the layer of cooling material relatively slowly.

According to the invention, a fire or smoke protection curtain has at least one fire protection element. Preferably, this fire or smoke protection curtain has a second fire protection element having a second cooling layer of cooling material and binder and a second layer of metal foil, the first fire protection element and the second fire protection element with respect to each other so that the fire protection elements are pressed out of gas leaving the cooling layer. In this way it can be achieved, for example, that at least one fire protection element faces its cooling layer against the other fire protection element and opposes its metal sheet layer. Because the metal sheet layer is gas impermeable to a large extent, the gas generated in the endothermic reaction of the cooling material moves the fire protection element away in a direction from the metal sheet layer. In this way a gas pad is formed between the two fire protection elements that it presses distantly. This gas pad leads to thermal insulation and thereby increases the thermal resistance of the fire or smoke protection curtain.

Preferably the fire or smoke protection curtain has a third fire protection element, which has a third cooling layer of cooling material and binder, and has a third layer of metal foil, as well as a fourth protection element against fires, to present a

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fourth cooling layer of cooling and binder material and a fourth layer of metal sheet, the fire protection elements being arranged relative to each other so that the gas leaving the cooling layers presses away the protection elements fire protection. In this way a fire or smoke protection curtain is obtained which can be applied in a thin layer arrangement, for example by winding on a winding axis, and can be arranged in a protection arrangement, in which it closes for example an opening , increasing a thickness of the fire or smoke protection curtain in the case of fire and thus conditions an increase in thermal resistance.

It is favorable that the fire or smoke protection curtain has a winding axis for winding the at least one fire protection element, the cooling layer being configured so that the fire protection element can be rolled several times by the winding shaft and can be wound on the winding shaft, without cooling material being detached from the support. In particular, the at least one fire protection element can be wound at least a thousand times on the winding shaft and unwind again, without dropping more than five percent of the support cooling material.

For the preparation of the fire protection element, the cooling material is first stirred with the binder giving a paste. The binder is presented in this respect preferably as an aqueous emulsion. Preferably a dispersion aid, for example a surfactant, is mixed to facilitate agitation with a high level of loading. Preferably a thickener, for example, an acrylate, is incorporated to adjust the toughness and extensibility. This paste is stretched on a coating device with a scraper as well as on the support and then dried with hot air. The cooling material preferably has a particle size of at least 0.2 pm.

The invention will be explained in more detail below by means of the attached drawing. This sample:

Figure 1 a cross-sectional drawing in section by a fire protection element according to the invention and

Figure 2 a static view of a fire or smoke protection curtain according to the invention.

Figure 3 is a cross-sectional drawing in section by a fire protection element according to the invention according to a second embodiment of the invention.

Figure 1 shows a fire protection element 10.1 that is schematically shown as a cross-sectional section. The fire protection element 10.1 has a thickness d, which is preferably at least d = 5 millimeters and is generally less than d = 50 millimeters. In the present case the thickness d = 25 millimeters. The thickening direction is considered as the x direction. In the y direction, which extends in the horizontal direction, the fire protection element 10.1 has a width B, which depends on a specific application (see Figure 2). For example, the width is more than two meters, in particular more than four meters. In the z direction the fire protection element 10.1 has a height H, which is generally greater than one meter, in particular more than two meters. Therefore it is recognized that Figure 1 shows only a cut of a fire protection element.

Figure 1 also shows a fire or smoke protection curtain 12 that in addition to the fire protection element 10.1 comprises three additional fire protection elements 10.2, 10.3, 10.4. As the extension in section shows, the fire protection element 10.1 comprises a flexible support 14.1, on which a binder layer 16.1 is applied. The binder 16 forms a matrix for the cooling material 18.1 which is stored in the form of particles 20.1, 20.2, ... in the binder 16.1. Binder 16.1 and cooling material 18.1 form a cooling layer 19.1.

In the present embodiment, the support 14.1 comprises a textile layer 22.1, in the present case of glass fabric. The surface mass of the g-M support, for example the mass of the support 14 per unit area, can be for example 200 grams per square meter.

The support 14.1 also has a layer of adhesive 24.1 whereby a layer of metal sheet 26.1 is glued on the textile layer 22.1. The adhesive layer 24.1 can, for example, have a surface coverage of 6 grams per square meter. The metal foil layer 26 is in the present case a layer of aluminum foil. This has for example a thickness of 20 micrometres.

Obviously it is possible that the support has several layers.

The fire or smoke protection curtain 12 in the present case comprises four fire protection elements 10.1, 10.2, 10.3, 10.4 constituted in the same way. The respective layers of metal foil (references without numeric suffix refer to any corresponding object) are in this respect viewed outwards. In other words these are assigned so that they point outward from a medium plane E. This

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it has the effect that the combustion heat W acting from the outside is reflected again respectively by the fire protection elements 10.1, 10.2 that are outside. Due to the low degree of emission of the metal sheet also only very little radiation heat reaches the respective cooling layer 19.

The fire and smoke protection element 12 comprises outside the fire protection elements 10.1, ... 10.4 two insulating elements 28.1, 28.2, which may be formed, for example, by nappa mats of glass fiber material.

The binder 16 in the present case comprises a polymer in the form of vinyl acetate. The vinyl acetate used has a degradation temperature T16 of 330 ° C.

The cooling material 18 comprises aluminum hydrate, whose activation temperature is 18 = 240 ° C. If the activation temperature T18 is greater than the degradation temperature of the T16 binder, the difference between the two is comparatively small and in particular reaches less than 100 kelvin, namely in the present case 90 kelvin.

The cooling material 18 is applied with a surface mass of the cooling material of f = 710 gram per m2. A mass per support surface g-M is found in g-M = 240 grams per m2. A degree of filling and cooling material 18 reaches

Mass of cooling material 18

Y = ------------------------------------------------ ------------------- = 710 g / 950 g = 75%.

Total mass of binder and cooling material

Per square meter of fire or smoke protection curtain 12 the fire protection elements 10.1, 10.2, 10.3, 10.4 in this case contain 1.4 kilograms (two fire protection elements) or 2.8 kilograms accumulated (four fire protection elements) of cooling material 18. In other words a coverage of specific surface cooling material accumulated reaches fi = 1.4 kg / m2 or fi = 1.4 kg / m2.

In the event of a fire, the heat of the fire W is inhibited primarily by the insulation element 28.1 in the propagation to the fire or smoke protection curtain 12. The heat of radiation leaving the insulation element 28.1 is reflected by the metal sheet layer 26.1 of the first fire protection element 10.1 and only a small part is transmitted to the cooling layer 19.1 from the binder 16.1 with the cooling material 18.1 embedded.

If the temperature in the cooling layer 19.1 exceeds the degradation temperature of the cooling medium T18, then the cooling material 18.1 absorbs heat and releases water of crystallization, which evaporates and leaks like water vapor 30 on the face that gives the fire. Water vapor 30 presses the first fire protection element 101 from the second fire protection element 10.2, so that a thermal insulating air cushion is generated. If the temperature rises more and more, the degradation of the binder 16 is reached. The degradation gases that are generated are diluted with the water vapor and escaped, without burning or exploding inside the fire protection curtain or against smoke 12.

Figure 2 shows a fire or smoke protection device 36, representing an object independent of the invention and a fire or smoke protection curtain 12 according to the invention as well as a winding shaft 38 and a motor 40 Figure 2 shows the situation in which the fire or smoke protection curtain 12 closes a building opening 32, which is configured in a schematically drawn building 34, and thus prevents the propagation of smoke or smoke. A fire through this opening.

By winding on the winding shaft 38 the fire or smoke protection curtain 12 is arranged in a storage arrangement, in which the opening of the building 32 is not closed. In the rolled state the fire protection elements 10.1, 10.2, 10.3, 10.4 (see Figure 1) are directly above each other and the thickness d of the fire or smoke protection curtain 12 is at most half the thickness in case of fire. In the present case the thickness d reaches in the rolled state approximately d = 25 millimeters.

It is not necessary that the fire or smoke protection curtain 12 be rolled up. It is also possible for example that it bends or folds, if carried from the closing arrangement, in which the opening of the building 32 is closed, to the storage arrangement.

Figure 3 shows a cross-section through a fire protection element 10.1 in accordance with the invention and a fire protection element 10.2 according to the invention also constituted, which are a joint component of a fire or smoke protection curtain according With the invention.

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The fire protection element 10.1 has a flexible support 14.1 that can be formed by a fiberglass fabric. The cooling material 18.1 is applied to the flexible support 14.1 and is presented in the form of a cooling layer 19.1. The flexible insulation element 28.1 is arranged in relation to a normal direction N through the cooling layer 19.1.

The insulation elements 28 are formed in this case by a fiberglass mat. The thermal conductivity A is 0.04 watts per kelvin and meter. A thickness d28 of the insulation elements 28 is aqm d28 = 6 mm. A d-ig thickness of the cooling layer 19 is preferably greater than 1 mm and in this case reaches 1.5 mm. The coefficient of thermal transmission u of the insulation elements 28 aqm is U = 5 W / K m2. Due to the high insulation of the effect of the insulation elements, the fire or smoke protection curtain is sufficient without intumescent material. Because the fire protection elements 10.1, 10.2 do not additionally contain other combustible material, the fire or smoke protection curtain is free of combustible materials.

The fire protection element 10.1 has a textile element 42.1, which in this case has a fire protection textile 44.1 and a metal sheet 46.1, which are joined together, in this case glued together. The textile element 42.1 has a coating 48.1 which is preferably composed of silicone. The coating 48.1 can be applied both to the face that does not give or to the cooling layer 19.1 of the fire protection textile 44.

If the textile element 42 is heated then the silicone is disintegrated and a thin ceramic layer is formed, which ensures that the fire protection element 10.1 is also airtight at high temperatures. This prevents hot combustion gases due to a pressure difference between the opposite side of the fire and the face giving the fire to flow through the fire protection element to a relevant level.

The fire protection element 10.1 also has a second textile element 42.2, which is preferably constituted as the first textile element 42.1. The fire protection element 10.1 also has a second insulation element 28.2. The cooling layer 19.1 is arranged between the two insulation elements 28.1, 28.1 If the support 14.1 is left out of consideration, then the fire protection element 10.1 is symmetrically constituted, which is advantageous, but not necessary.

The second fire protection element 10.2 is constituted as the first fire protection element 10.1. The corresponding references of the second fire protection element carry an apostrophe. It is possible, but not necessary, for the fire or smoke protection curtain to have more than two, for example three, four, five or more fire protection elements.

Reference List

 10

 Fire protection element Y Degree of filling

 12

 Fire or smoke protection curtain g-M Carrier surface mass

 14

 Support H Height

 16

 Heat wl binder

 18

 Cooling material 716 Binder degradation temperature

 19

 Cooling layer T18 Activation temperature

 A thermal conductivity

 twenty

 Partfcula U Heat transfer coefficient

 22

 Textile layer

 24

 Adhesive layer

 26

 Metal sheet

 28

 Insulation element

 30

 Water vapor

 32

 Building opening

 3. 4

 Building

 36

 Fire or smoke protection device

 38

 Winding shaft

 40

 Engine

 42

 Textile element

 46

 Fire protection textile

 48

 Covering

 P

 Coverage of accumulated surface specific cooling material

 B

 Width

 d

 Thickness

 F

 Surface mass of material and cooling

 AND

 Middle plane

Claims (6)

10 fifteen 20 2. 3. 25 Four. 30 5. 6. 35 40 45 7. fifty 55 8. 60 Fire or smoke protection curtain with at least one fire protection element (10), comprising (a) a flexible support (14) and (b) cooling material (18), which is applied on the support (14) and reacts above an activation temperature with heat absorption, as well as (c) an organic binder (16), with which the cooling material (18) joins the flexible support (14) so that the fire protection element (10) is flexible and forms a matrix for the cooling material (18) and (d) the binder (16) presenting a degradation temperature of the binder (716) that differs from the activation temperature at most 150 kelvin (e) the cooling material and binder being applied in the form of a flexible layer on the flexible support. Fire or smoke protection curtain according to claim 1, characterized by a winding shaft for winding the at least one fire protection element. Fire or smoke protection curtain according to one of the preceding claims, characterized by a surface mass of cooling material (f) of the cooling material (18) of at least 1.5 times a surface mass of the support (g14). Fire or smoke protection curtain according to one of the preceding claims, characterized by a degree of filling (and) of the cooling material (18) of at least 50%. Fire or smoke protection curtain according to one of the preceding claims, characterized by a coverage of specific surface cooling material (p) of at least 1.5 kilograms per square meter. Fire or smoke protection curtain according to one of the preceding claims, characterized by - a first flexible insulation element (28.1), in particular a first insulation layer, whose heat transfer coefficient (U) is a maximum of 8 watts per kelvin and square meter, and - a second flexible insulation element (28.2), in particular a second insulation layer, whose heat transfer coefficient (U) is a maximum of 8 watts per kelvin and square meter, - the cooling material being arranged between the insulation elements (28). Fire or smoke protection curtain according to one of the preceding claims, characterized in that - the first flexible insulation element (28.1) comprises a mineral fiber mat and / or the second flexible insulation element (28.2) comprises a mineral fiber and / or mat - a thermal conductivity (A) of the insulation elements (28) is a maximum of 4 watts per kelvin and meter. Fire or smoke protection curtain according to one of the preceding claims, characterized by - a first textile element (42.1), comprising fire protection textile, and - a second textile element (42.2), comprising fire protection textile, - the insulation elements (28.1, 28.2) being arranged between the textile elements 42, - the first textile element (42.1) presenting a first metal sheet (46.1) and / or - presented the second textile element (42.2) a second metal sheet (46.2). 9. Fire or smoke protection curtain according to one of the preceding claims, characterized in that 5 -the first textile element (42.1) has a first coating (48.1), which is ceramized at high temperatures, so that the first textile element (42.1) is airtight, and / or - the second textile element (42.2) has a second coating (48.2), which is ceramized at high temperatures, so that the second textile element (42.2) is airtight. 10 10. Fire or smoke protection curtain according to one of the preceding claims, characterized by a caloric power of the cooling material (10) as a maximum of zero. 11. Fire or smoke protection curtain according to one of the preceding claims, characterized in that the support (14) comprises (i) a textile layer (22) of fire protection textile (44), on which the cooling material (18) is applied, and (ii) it has a metal sheet layer (26), in particular an aluminum sheet layer, (iii) the fire protection textile (44) being arranged between the cooling material (18) and the 20 layer of metal sheet (26). 12. Fire or smoke protection curtain according to one of the preceding claims, characterized in that the fire protection element has a thermal absorption of at least 2000 kJ / m2.