Patent Description:
The present invention also relates to a method for forming a fire-protection collar for closing through-passages in walls, ceilings and/or floors in the event of a fire.

The prior art discloses the practice of using fire-protection collars within buildings to close in particular feed-throughs for cables and/or non-fire-resistant pipes in walls, ceilings or floors in order to protect against fire and/or smoke in the event of a fire and thus to avoid, in the event of a fire, fire and/or smoke spreading from one room into another room and the feed-throughs being adversely affected by the fire.

The prior art discloses various configurations of such fire-protection collars, which are usually installed in front of a wall, ceiling or floor opening which allows a pipe to pass through. A fire-protection collar usually has an intumescent material, which is arranged around a non-fire-resistant pipe. The intumescent material of the fire-protection collar here is usually arranged on or in a metallic sheath, which further serves, in particular with at least one holder, for fastening the fire-protection collar on walls, ceilings and/or floors by means of screws or similar fastening means.

The disadvantage with the already known fire-protection collars is, in particular, that they have a relatively large number of individual elements or components and, on account of their configuration, usually cannot be adapted with any particular degree of flexibility to different openings of feed-throughs or to pipes and/or lines of different cross sections.

<CIT> discloses a fire-protection collar for closing through-passages in walls, ceilings and/or floors in the event of a fire, wherein said fire-protection collar has at least one lining strip which is made of or comprises a thermally expandable material and is fitted on the inner surface of a fireproof sheath, which is or can be formed in an essentially tubular or annular manner, wherein on at least one side of the essentially tubular or annular sheath, the lining strip may project at least partially beyond the essentially tubular or annular sheath. In one embodiment disclosed in <CIT>, the sheath is wrapped around the strip of thermally expandable material, such that a tip of the strip extends beyond the sheath.

In view of the already known prior art, the present invention is based on the object of providing a fire-protection collar which is intended for closing through-passages in walls, ceilings and/or floors in the event of a fire, can be produced straightforwardly and cost-effectively, in particular with only a small number of individual elements or components, and can be adapted in a flexible manner to different openings of feed-throughs or to pipes and/or lines of different cross sections.

This object is achieved in technical terms by the fire-protection-collar element as claimed in claim <NUM>.

The object is further achieved in the fire-protection collar as claimed in claim <NUM> and the method as claimed in claim <NUM>.

The sheath advantageously forms essentially the outer side of the fire-protection collar, wherein preferably the outer surface of the sheath forms the outer side of the fire-protection collar. The sheath, in the context of the present invention, advantageously surrounds the intumescent material, and is located preferably exclusively on the outer side of the material which increases in volume in the event of a fire, preferably the intumescent material.

The lining is advantageously a tube or ring or is or can be formed by at least one strip made of or comprising an intumescent material.

A further advantageous configuration of the invention is characterized by an integral and preferably essentially adhesive-free connection between the sheath and lining.

According to the invention, the sheath is embedded or accommodated in the lining, preferably in an essentially surface-flush manner. The fire-protection-collar element according to the invention can thus advantageously be rendered more robust, in particular such that the sheath and the lining cannot so easily become detached from one another.

The sheath, preferably the foil which forms the sheath, is advantageously bimetallic. In particular the use of two metals of different coefficients of linear expansion is advantageous here. Rendering the sheath, in particular the foil, of the fire-protection-collar element bimetallic can advantageously ensure that the lining arranged beneath the metal foil, preferably the lining-forming strip made of or comprising a material which is preferably intumescent in the event of a fire, is retained on the enclosed pipe or the enclosed line or pipeline even in the event of a fire.

According to the invention, the foil of the fire-protection-collar-band, which forms the sheath of the fire-protection-collar element is a flexible metal foil and has a thickness of approximately <NUM> to approximately <NUM>, preferably of approximately <NUM> to approximately <NUM>.

The lining is or can advantageously be formed from or by a non-prefoamed material which increases in volume in the event of a fire, preferably an intumescent material. Using such a material means that the latter expands to a relatively great extent in the event of a fire, or such a material expands a number of times in the event of a fire. In addition to providing for further-improved prevention of the penetration of smoke and/or fire in the event of a fire, such a material also has an insulating effect.

A further advantageous configuration of the invention is characterized by a maximum overall thickness of the fire-protection-collar band ranging from <NUM> to <NUM>, preferably ranging from approximately <NUM> to approximately <NUM>. It has been established that, with a maximum overall thickness according to the invention, it is possible to achieve a better bending capability of the fire-protection-collar band, and this provides for, in particular, more straightforward adaptation to lines and/or pipes of relatively small cross sections.

The invention here exploits, in particular, the finding that, if use is made of a fireproof and essentially strip-like foil on which a strip made of or comprising an intumescent material, is positioned, the fire-protection collar is easy to make, in particular by virtue of the fire-protection-collar band being cut to any desired length, for example by means of scissors or side cutters. In particular on account of its flexibility, the fire-protection-collar band according to the invention can also be adapted straightforwardly to different openings of feed-throughs or pipes and/or lines of different cross sections.

An advantageous configuration of the invention is characterized by an integral and preferably essentially adhesive-free connection between the foil and strip made of or comprising an intumescent material.

A further advantageous configuration of the invention is characterized by the foil of the fire-protection collar-band being embedded or accommodated in an essentially surface-flush manner in the strip made of or comprising a material which increases in volume in the event of a fire, which is an intumescent material. The fire-protection-collar band can thus advantageously be rendered more robust, in particular such that the foil and the strip made of or comprising an intumescent material, cannot so easily become detached from one another. It is also made possible, in the case of the configuration according to the invention, for a plurality of layers of the fire-protection-collar band to be arranged one above the other, in particular by being wrapped a number of times around a pipe, without this resulting in the formation, between the individual layers, of gaps or offsets, which would otherwise arise on account of the foil being placed in position.

According to the invention, provision is made for the foil of the fire-protection-collar band to be a flexible metal foil and to have a thickness of approximately <NUM> to approximately <NUM>, preferably of approximately <NUM> to approximately <NUM>. Selecting such properties for the foil can ensure that, while the amount of material used is as small as possible, sufficient stability of the fire-protection-collar band is achieved. It is thus advantageously possible to achieve a comparatively low weight for the fire-protection-collar band without this having an adverse effect on the fire-protection properties relating to the design of a fire-protection collar.

In a further advantageous configuration of the fire-protection-collar band according to the invention, provision is made for the strip made of or comprising an intumescent material, to be made of a non-prefoamed material. Using such a material means that the latter expands to a relatively great extent in the event of a fire, or such a material expands a number of times in the event of a fire. In addition to providing for further-improved prevention of the penetration of smoke and/or fire in the event of a fire, such a material also has an insulating effect.

A further configuration of the invention is characterized by a maximum overall thickness of the fire-protection-collar band ranging from <NUM> to <NUM>, preferably ranging from approximately <NUM> to approximately <NUM>. It has been established that, with a maximum overall thickness according to the invention, it is possible to achieve a better bending capability of the fire-protection-collar band, and this provides for, in particular, more straightforward adaptation to lines and/or pipes of relatively small cross sections.

A further advantageous configuration of the invention provides for the fire-protection-collar element to have at least one holder, preferably three holders, by means of which a fire-protection collar formed for closing through-passages in walls, ceilings and/or floors in the event of a fire is fastened on a structural part, in particular a wall, a ceiling and/or a floor of a room, wherein the holder has, or each of the holders has, a portion for fastening the holder on a structural part, in particular wall, ceiling and/or floor of a room, and a portion having means for anchoring and/or fixing the holder on the fire-protection-collar element.

The portion for fastening the holder on a structural part and the portion with means for anchoring and/or fixing a fire-protection-collar element on the holder advantageously enclose an angle, preferably an angle ranging from approximately <NUM>° to approximately <NUM>°, preferably an angle of approximately <NUM>°.

The means for anchoring and/or fixing the holder on the fire-protection-collar element are advantageously lugs which can be bent around the side peripheries of the fire-protection-collar element and/or lugs which can be bent into the fire-protection-collar element.

The advantage of such a fire-protection-collar holder, in addition to the compact construction thereof, is, in particular, its straightforward handling capability during installation.

The holder is advantageously designed for accommodating a plurality of layers of a fire-protection-collar band according to the invention, wherein preferably the layers of the fire-protection-collar band can be arranged one above the other.

A further advantageous configuration of the invention provides for the fire-protection-collar element to have at least one closure for forming a fire-protection collar for closing through-passages in walls, ceilings and/or floors in the event of a fire, wherein the closure has a closure element which can be fastened at the first end of the fire-protection-collar band and a closure element which can be fastened at the second end of the fire-protection-collar band, the closure elements preferably having means for anchoring and/or fixing the respective closure element on the fire-protection-collar band and interacting means for connecting the closure elements.

The means for anchoring and/or fixing the respective closure element on the fire-protection-collar band are advantageously lugs which can be bent around the side peripheries of the fire-protection-collar band and/or lugs which can be bent into the fire-protection-collar band.

The interacting means for connecting the closure elements advantageously comprise at least one aperture on one of the closure elements and at least one lug on the other of the closure elements, it being possible for said lug to be brought into engagement with the aperture.

Such a closure further improves the flexibility of a fire-protection collar according to the invention. The design of the closure allows the latter to be fitted straightforwardly on a fire-protection-collar band which has previously been cut to any desired length. Such a closure advantageously comprises just two, or a maximum of three, components, and this simplifies both production and installation. Furthermore, it is possible for the closure to be installed on a fire-protection-collar band advantageously by straightforward means, for example by virtue of the means for anchoring and/or fixing the closure elements on the fire-protection-collar band, and the interacting means for connecting the closure elements, being mechanically deformed by bending, in particular, using a screwdriver or using a pair of pliers.

According to a preferred configuration of the invention, provision is made for the closure and/or the closure elements to be made of metal or sheet metal. The closure according to the invention can thus ensure a reliable connection to a fire-protection-collar band, and a reliable closure of the same, and can provide for feed-throughs to be sealed in particular in the event of a fire. The closure or the closure elements is/are advantageously made from metal, in particular sheet metal, and preferably with a thickness of approximately <NUM> to approximately <NUM>. With the amount of material used being as small as possible, this advantageously ensures sufficient stability of the closure or of the closure elements.

A kit for forming a fire-protection collar for closing through-passages in walls, ceilings and/or floors in the event of a fire is also disclosed, comprising at least one fire-protection-collar element according to the invention in combination with at least one closure and at least one holder, preferably three holders according to the invention as described hereinbefore.

In addition, the present invention relates to a method for forming a fire-protection collar for closing through-passages in walls, ceilings and/or floors in the event of a fire, characterized by the following steps:.

An advantageous configuration of the invention provides for the fire-protection-collar element to be arranged at a distance around the at least one pipeline passing through the wall, the ceiling or the floor, preferably at a distance of more than <NUM>, preferably at a distance of more than <NUM>, or even at a distance of more than <NUM>. The distance preferably is below <NUM>; more preferably below <NUM>; and even more preferably below <NUM>. In particular embodiments, the distance is between <NUM> and <NUM>. In specific embodiments, the distance is between <NUM> and <NUM>. In further embodiments, the distance is between <NUM> and <NUM>.

A further advantageous configuration of the invention provides for the fire-protection-collar element to be arranged around the at least one pipeline passing through the wall, the ceiling or the floor by virtue of the pipeline being wrapped with a fire-protection-collar band in the region of the through-passage, by virtue of the fire-protection-collar band being provided with at least one closure, , in particular a closure which has a closure element which can be fastened at the first end of the fire-protection-collar band and a closure element which can be fastened at the second end of the fire-protection-collar band, the closure elements preferably having means for anchoring and/or fixing the respective closure element on the fire-protection-collar band and interacting means for connecting the closure elements, and by virtue of the at least one closure being closed, wherein the fire-protection-collar band is provided with at least one closure preferably either before or after the fire-protection-collar band is arranged around the at least one pipeline, and wherein the at least one closure is closed preferably either before or after the fire-protection-collar band is arranged around the at least one pipeline.

Further details, features and advantages of the invention will be explained more specifically hereinbelow with reference to the exemplary embodiments illustrated in the figures of the drawings, in which:.

<FIG> shows a plan view of an exemplary embodiment of a comparative fire-protection-collar band <NUM> for forming a fire-protection collar for closing through-passages in walls, ceilings and/or floors in the event of a fire, having at least one lining <NUM> which is made of or comprises an intumescent material, and is positioned or fitted on the inner surface of a fireproof and essentially tubular or annular metal sheath <NUM>.

The fire-protection-collar band <NUM> has a strip <NUM> made of or comprising an intumescent material, and having a fireproof and essentially strip-like flexible metal foil <NUM> with a thickness of approximately <NUM>. The foil <NUM> here forms the sheath <NUM> of the fire-protection-collar element <NUM>. The strip <NUM> here forms the lining <NUM> of the fire-protection-collar element <NUM>. The side peripheries of the strip <NUM> which run in the direction of the longitudinal extent of the fire-protection-collar band <NUM> are spaced apart from the side peripheries of the foil <NUM> which run in the direction of the longitudinal extent of the fire-protection-collar band <NUM>. The width of the strip <NUM> here is greater than the width of the foil <NUM>.

The foil <NUM>, which in the present case is positioned on the strip <NUM> made of or comprising an intumescent material, gives the strip <NUM> increased stability and simplifies the installation of the same. The material of the strip <NUM> is advantageously a non-prefoamed material which advantageously expands for the first time in the event of a fire, under the action of heat.

<FIG> shows a sectional side view of an exemplary embodiment of a fire-protection-collar band <NUM> for forming a fire-protection-collar element according to the invention. The foil <NUM> here is at least partially embedded or accommodated in the strip <NUM> made of or comprising a material which increases in volume in the event of a fire, specifically an intumescent material. A preferred configuration (not illustrated explicitly here) of the invention provides for the foil <NUM> to be embedded or accommodated in an essentially surface-flush manner in the strip <NUM> made of or comprising a material which increases in volume in the event of a fire. It can be seen from <FIG> that the foil <NUM> has approximately half of its overall thickness embedded in the strip <NUM> made of or comprising a material which increases in volume in the event of a fire. It is thus advantageously possible to achieve a reliable connection between the foil <NUM> and strip <NUM> during production of a fire-protection-collar band <NUM> for use in forming the fire-protection-collar element according to the invention and to ensure that, in particular when the fire-protection-collar band <NUM> is being processed or installed, the strip <NUM> does not become detached from the foil <NUM> or the foil <NUM> does not become detached from the strip <NUM>. The robustness of this fire-protection-collar band <NUM> is thus improved overall.

Both in the case of the exemplary embodiment according to <FIG> and in the case of the exemplary embodiment according to <FIG>, provision is also made for the fire-protection-collar band <NUM> to have a maximum overall thickness of <NUM> or a maximum overall thickness of <NUM>.

<FIG> shows a plan view of a first exemplary embodiment of a closure <NUM> for a fire-protection-collar element <NUM> according to the invention (not illustrated in <FIG>), having a closure element <NUM> which can be fastened at the first end of the fire-protection-collar band <NUM> and a closure element <NUM> which can be fastened at the second end of the fire-protection-collar band <NUM>. The closure elements <NUM> and <NUM> of the closure <NUM>, said closure elements being produced preferably from metal or sheet metal, have means <NUM> and <NUM> for anchoring and/or fixing the respective closure elements <NUM>, <NUM> on the fire-protection-collar band <NUM>. The closure elements <NUM> and <NUM> also have interacting means <NUM> and <NUM> for connecting the closure elements <NUM> and <NUM>. The means <NUM> of the closure <NUM> are designed in the form of lugs <NUM> which can be bent around the side peripheries of the fire-protection-collar band <NUM>. The means <NUM> of the closure <NUM> are designed in the form of lugs <NUM> which can be bent into the fire-protection-collar band <NUM>. The interacting means <NUM> and/or <NUM> of the closure elements <NUM> and <NUM>, respectively, are designed in the form of an aperture <NUM> on the closure element <NUM> and of a lug <NUM> on the closure element <NUM>, it being possible for said lug to be brought into engagement with the aperture <NUM> of the closure element <NUM>. The means <NUM>, <NUM> and/or <NUM> of the closure elements <NUM> and <NUM> can advantageously be mechanically deformed or bent using a screwdriver, a pair of pliers or a similar tool and therefore provide for the closure <NUM> to be straightforwardly installed and closed.

<FIG> shows a plan view of a second exemplary embodiment of a closure <NUM> for a fire-protection-collar element <NUM> according to the invention (not illustrated in <FIG>). The closure <NUM> according to <FIG> differs from the closure <NUM> according to <FIG> by the configuration and arrangement of the interacting means <NUM> and/or <NUM> of the closure elements <NUM> and <NUM>. The closure elements <NUM> and <NUM> according to <FIG> each have, arranged one beside the other on one side, a lug <NUM> and an aperture <NUM>, which can be brought into engagement with a corresponding aperture <NUM> and lug <NUM> on the respectively other closure element <NUM>, <NUM>. Doubling up in this way on the interacting means <NUM> and/or <NUM> on the closure elements <NUM> and <NUM> of the closure <NUM> according to <FIG> provides for the closure <NUM> to be closed in a reliable manner, in particular such that it is sufficient to produce the closure elements <NUM> and <NUM> from metal or sheet metal with a thickness of just <NUM>.

<FIG> shows a plan view of a third exemplary embodiment of a closure <NUM> for a fire-protection-collar element <NUM> according to the invention (not illustrated in <FIG>). The closure <NUM> according to <FIG> differs from the closure <NUM> according to <FIG> by the configuration and arrangement of the interacting means <NUM> and/or <NUM> of the closure elements <NUM> and <NUM>. The closure elements <NUM> and <NUM> according to <FIG> correspond to the closure element <NUM> according to <FIG> and, to this extent, are of the same configuration. The closure element <NUM> according to <FIG>, instead of the lug <NUM> - as is provided for the closure element <NUM> according to <FIG> - likewise has an aperture <NUM>, as is provided for the closure element <NUM> according to <FIG>. A securing element <NUM>, which interacts with the apertures <NUM> of the closure elements <NUM> and <NUM>, is provided in order to close the closure <NUM> according to <FIG>, it being possible for said securing element <NUM>, for this purpose, to be pushed through the two apertures <NUM> of the closure elements <NUM> and <NUM> and then to be mechanically deformed.

<FIG> shows a schematic side view of a first exemplary embodiment of a holder <NUM>, by means of which a fire-protection collar formed for closing through-passages in walls, ceilings and/or floors is fastened on a structural part, in particular a wall, a ceiling and/or a floor. The holder <NUM> has a portion <NUM> for fastening the holder on a structural part, in particular wall, ceiling and/or floor of a room, and a portion <NUM> with means <NUM> and <NUM> for anchoring and/or fixing a fire-protection-collar band <NUM> (not illustrated in <FIG>) on the holder <NUM>. Provision is made here, in particular, for the fire-protection-collar band <NUM> to be fixed by virtue of the means <NUM> being deformed, for example using a screwdriver or a pair of pliers. The means <NUM> of the holder <NUM> according to <FIG> in the present case are designed to accommodate a single layer of a fire-protection-collar band <NUM>. The fastening of the holder <NUM> on a structural part by way of the fastening portion <NUM> can take place, for example, using screws or similar fastening means.

<FIG> shows a schematic side view of a second exemplary embodiment of a holder <NUM>, by means of which a fire-protection collar formed for closing through-passages in walls, ceilings and/or floors is fastened on a structural part, in particular a wall, a ceiling and/or a floor. The holder <NUM> according to <FIG> differs from the holder <NUM> according to <FIG> by the configuration of the means <NUM> for anchoring and/or fixing a fire-protection-collar band <NUM> (not illustrated in <FIG>) on the holder <NUM>. In the case of the exemplary embodiment of the holder <NUM> according to <FIG>, the means <NUM> of the portion <NUM> are designed for accommodating two layers of a fire-protection-collar band <NUM>. The layers of the fire-protection-collar band <NUM> can be arranged one above the other here. The means <NUM> of the portion <NUM> of the holder <NUM> according to <FIG> are configured and dimensioned here such that they can penetrate not just the first layer of the fire-protection-collar band <NUM>, but also the second layer of the fire-protection-collar band <NUM>. Overall, this provides for the two layers of the fire-protection-collar band to be retained firmly and reliably.

A further advantageous configuration of the invention provides for the means <NUM> of the portion <NUM> of the holder <NUM> according to <FIG> to be extended or dimensioned such that it is also possible to fix more than two layers of the fire-protection-collar band <NUM>.

<FIG> shows a schematic side view of a third exemplary embodiment of a holder <NUM>, by means of which a fire-protection collar formed for closing through-passages in walls, ceilings and/or floors is fastened on a structural part, in particular a wall, a ceiling and/or a floor. The holder <NUM> according to <FIG> differs from the holder <NUM> according to <FIG> by the configuration of the means <NUM> for anchoring and/or fixing a fire-protection-collar band <NUM> (not illustrated in <FIG>) on the holder <NUM>. In the case of the exemplary embodiment according to <FIG>, two means <NUM> serving for retaining or fixing the fire-protection-collar band <NUM> are provided merely on that side of the holder <NUM> which is illustrated at the top in <FIG>, whereas only one means <NUM> serving for retaining or fixing the fire-protection-collar band <NUM> is provided on that side of the holder <NUM> which is illustrated at the bottom in <FIG>. The configuration according to <FIG> has, in particular, installation-related advantages for the fitting of a fire-protection collar having a fire-protection-collar band <NUM> with more than one layer.

Fire-protection-collar bands <NUM> according to the invention, closures <NUM> and holders <NUM> advantageously make it possible to provide a fire-protection-collar system which is intended for closing through-passages in walls, ceilings and/or floors in the event of a fire, and a kit which is intended for forming a fire-protection collar for closing through-passages in walls, ceilings and/or floors in the event of a fire, can be produced straightforwardly and cost-effectively, in particular with only a small number of individual elements or components, and can be adapted in a flexible manner to different openings of feed-throughs or to pipes and/or lines of different cross sections.

A fire-protection collar for closing through-passages in walls, ceilings and/or floors in the event of a fire is formed as follows:
Arranging a fire-protection-collar element <NUM> around at least one pipeline passing through a wall, a ceiling or a floor, in particular such that, under the action of an elevated temperature, in particular in the event of a fire, volume-increasing material, preferably intumescent material, of the fire-protection-collar element <NUM> expands and closes the through-passage through the wall, the ceiling or the floor in order to prevent fire and/or smoke from spreading from one room into another room.

Fastening at least one holder <NUM>, preferably at least three holders <NUM>, on the fire-protection-collar element <NUM>, either before or after the fire-protection-collar element <NUM> is arranged around the at least one pipeline.

Optionally aligning the at least one holder <NUM>, preferably the at least three holders <NUM>, in relation to the passage of the pipeline through the wall, the ceiling or the floor.

Fastening the at least one holder <NUM>, preferably the at least three holders <NUM>, by at least one fastening means, preferably a screw, on the wall, the ceiling or the floor.

The fire-protection-collar element <NUM> here is arranged, in particular, at a distance around the at least one pipeline passing through the wall, the ceiling or the floor, preferably at a distance of more than <NUM>, preferably at a distance of more than <NUM>, or even at a distance of more than <NUM>.

The fire-protection-collar element <NUM> is arranged around the at least one pipeline passing through the wall, the ceiling or the floor by virtue of the pipeline being wrapped with a fire-protection-collar band <NUM> in the region of the through-passage, by virtue of the fire-protection-collar band <NUM> being provided with at least one closure <NUM>, and by virtue of the at least one closure <NUM> being closed. The fire-protection-collar band <NUM> here is provided with at least one closure <NUM> preferably either before or after the fire-protection-collar band <NUM> is arranged around the at least one pipeline. The at least one closure <NUM> is closed preferably either before or after the fire-protection-collar band <NUM> is arranged around the at least one pipeline.

<FIG> shows a fire-protection collar <NUM> designed according to the invention for closing a through-passage in a wall, ceiling and/or floor in the event of a fire. The fire-protection collar <NUM> comprises an essentially annular or tubular fire-protection-collar element <NUM> which, for fastening on a structural part, in particular wall, ceiling and/or floor, is provided in this case with four holders <NUM>. The holders <NUM> here are distributed uniformly over the circumference of the annular fire-protection element <NUM>. The fire-protection-collar element <NUM> has an annular or tubular metallic sheath <NUM> which, on its inner surface, is provided with an essentially annular or tubular fireproof lining <NUM> made of an intumescent material. The lining <NUM> here is advantageously designed in the form of an annular or tubular moulding (cf. , in particular, <FIG>). The sheath <NUM> here is located preferably exclusively on the outer side of the lining <NUM>. The holders <NUM> (cf. also <FIG>) each have a portion <NUM>, which serves for fastening on a structural part, in particular wall, ceiling and/or floor, and is positioned essentially parallel on the structural part. The portion <NUM> has an opening <NUM>, which allows the holder <NUM> to be screwed on the structural part using a screw. The holders <NUM> (cf. also <FIG>) also each have a portion <NUM>, which is positioned on the side surface of the fire-protection-collar element <NUM> and accommodates the latter, and fixes it in position, between itself and the structural part. As can also be seen from <FIG>, the holders <NUM> each also have means <NUM> for anchoring and/or fixing on or in the lining <NUM> of the fire-protection-collar element <NUM>.

That exemplary embodiment of a fire-protection collar <NUM> according to the invention which is illustrated in <FIG> differs from that exemplary embodiment of a fire-protection collar <NUM> according to the invention which is illustrated in <FIG> by the design of the lining <NUM> of the fire-protection-collar element <NUM>. Whereas the lining <NUM> of the fire-protection-collar element <NUM> in the exemplary embodiment according to <FIG> is designed advantageously in the form of an annular or tubular moulding (cf. , in particular, <FIG>), the lining <NUM> of the fire-protection-collar element <NUM> in the exemplary embodiment according to <FIG> is formed from an annularly or tubularly joined-together strip <NUM> made of a material which an intumescent material (cf. , in particular, <FIG>) (this being shown clearly in <FIG> by way of the portions of the intumescent strip <NUM> which are indicated by 12a and 12b). As in the exemplary embodiment according to <FIG>, the metallic sheath <NUM> is located preferably exclusively on the outer side of the lining <NUM>.

<FIG> shows the design of a fire-protection collar <NUM> for closing a through-passage in a wall <NUM>. A fire-protection-collar element <NUM> (cf. , in particular, <FIG> or <FIG>) here is arranged around a pipeline <NUM> passing through the wall, in particular such that, under the action of an elevated temperature, in particular in the event of a fire, intumescent material of the lining <NUM> of the fire-protection-collar element <NUM> expands and closes the through-passage through the wall <NUM> in order to prevent fire and/or smoke from spreading from one room into another room. Four holders <NUM> are fastened on the fire-protection-collar element <NUM> such that the portion <NUM> of the respective holders <NUM> butts essentially parallel against the surface <NUM> of the wall <NUM> and can be fastened on the wall <NUM> by means of a screw. The fire-protection-collar element <NUM> here is arranged, in particular, at a distance around the pipeline <NUM> passing through the wall <NUM>, preferably at a distance of more than <NUM>, preferably at a distance of more than <NUM>, or even at a distance of more than <NUM>.

Claim 1:
Fire-protection-collar element (<NUM>) for forming a fire-protection collar (<NUM>) for closing through-passages in walls (<NUM>), ceilings and/or floors in the event of a fire,
wherein the fire-protection-collar element (<NUM>) has at least one lining (<NUM>) which is made of or comprises a material which increases in volume in the event of a fire, which is an intumescent material, and is positioned or fitted on the inner surface of a fireproof sheath (<NUM>), made of metal, which is formed in an essentially tubular or annular manner,
wherein:
- on at least one side of the essentially tubular or annular sheath (<NUM>), the lining (<NUM>) projects at least partially beyond the essentially tubular or annular sheath (<NUM>), and
- the sheath (<NUM>) is embedded or accommodated in the lining (<NUM>),
wherein the fire-protection-collar element is obtained by cutting a fire-protection collar band to a desired length, which fire-protection collar band having a flexible, thin, strip-like metal foil with a thickness of <NUM> to <NUM>, and further having a strip which is made of or comprises a material which increases in volume in the event of a fire, which is an intumescent material, wherein the foil is at least partially embedded or accommodated in the strip, wherein said foil forms the sheath and said strip forms the lining of the fire-protection-collar element.