EP0960251A1 - Fire-resistant opening seal - Google Patents

Fire-resistant opening seal

Info

Publication number
EP0960251A1
EP0960251A1 EP98908030A EP98908030A EP0960251A1 EP 0960251 A1 EP0960251 A1 EP 0960251A1 EP 98908030 A EP98908030 A EP 98908030A EP 98908030 A EP98908030 A EP 98908030A EP 0960251 A1 EP0960251 A1 EP 0960251A1
Authority
EP
European Patent Office
Prior art keywords
opening closure
closure according
heat
composite body
fire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98908030A
Other languages
German (de)
French (fr)
Other versions
EP0960251B1 (en
Inventor
Robert Graf
Maria-Elisabeth Kaiser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cognis IP Management GmbH
Original Assignee
Cognis Deutschland GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cognis Deutschland GmbH and Co KG filed Critical Cognis Deutschland GmbH and Co KG
Publication of EP0960251A1 publication Critical patent/EP0960251A1/en
Application granted granted Critical
Publication of EP0960251B1 publication Critical patent/EP0960251B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/92—Fire or heat protection feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/92—Fire or heat protection feature
    • Y10S428/921—Fire or flameproofing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/696—Including strand or fiber material which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous compositions, water solubility, heat shrinkability, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/699—Including particulate material other than strand or fiber material

Definitions

  • the invention relates to a fire-resistant, elastic opening closure in the form of a preformed composite body.
  • Openings are not permitted in components classified as fire protection (walls, ceilings), since in the event of a fire, fire and smoke can spread through the openings into the adjacent rooms.
  • fire protection walls, ceilings
  • a fire and smoke-tight closure for wall openings is known from the German utility model G 87 16 908.6.
  • This closure is produced in the form of a conical stopper by foaming a fine-pored two-component foam in a suitable raw form.
  • conical plugs are difficult to handle, which is is reinforced by the sticky outer skin.
  • numerous hollow molds must be kept in order to obtain plugs of different sizes.
  • DE 35 42 326 C1 describes a flame-retardant composite foam made of polyurethane foam flakes. This is produced by mixing the foam flakes with intumescent materials which can be inflated in the event of fire as binders and / or additives and then pressing them together. Intumescent materials in the form of expanded graphite can be used as the additive and intumescent materials in the form of an epoxy resin with a melamine hydrohalide can be used as the binder.
  • the composite foam obtained in this way is suitable as a composite foam panel for laying on surfaces to be protected.
  • the invention relates to a fire-resistant, elastic opening closure in the form of a preformed composite body
  • the opening closure according to the invention can be produced in a simple manner, to a large extent or completely using recycled material.
  • the opening closure according to the invention has excellent mechanical properties, in particular with regard to strength, abrasion resistance and elasticity.
  • the opening closure according to the invention has excellent fire properties. It can easily be formulated so that its fire resistance is above F90 according to DIN 4102. His fire resistance is therefore the same as the fire resistance of concrete components, which is particularly advantageous.
  • the blowing agent which becomes effective when the heat develops, increases the volume and ensures a particularly tight seal of the opening. Furthermore, additional cavities are created that increase the thermal insulation.
  • the at least one heat-effective binder becomes sticky when exposed to heat and ensures that the individual components of the composite body hold together in the event of a fire and do not crumble.
  • At least two heat-binding binders starting at different temperatures are advantageously provided.
  • Organic thermoplastics that melt at low temperatures, inorganic hot-melt adhesives such as borates, ammonium polyphosphate, which softens over a wide temperature range and at the same time have flame-retardant properties, and glass, which develops their adhesive properties at higher temperatures, are particularly suitable as heat-binding binders.
  • the glass is preferably in finely divided form, in particular in the form of fibers, hollow microspheres or glass powder.
  • blowing agents which expand at different temperatures are provided as blowing agents. This also allows the blowing properties to be controlled over a wide temperature range. Expandable graphite is particularly suitable as a blowing agent and, if bloating is desired even at high temperatures, also unexpanded vermiculite and / or pearlite.
  • the individual components can be premixed in finely divided form, after which the mixture is provided with the adhesive, preferably by spraying it onto the moving mixture.
  • the mixture wetted with the adhesive is then preferably pressed into a block under the action of heat, the heat being able to be introduced evenly into the mixture, in particular with the aid of a steam jet.
  • the at least one blowing agent and the at least one thermally active binder are in the form of a granulate containing both components. This will make it a very even one Distribution of the components in the opening closure obtained, which results in very uniform mechanical and fire properties.
  • Particularly suitable granules of this type are described in DE 39 30 722 A1 as a swelling agent composition.
  • the content of this publication is expressly referred to here.
  • the composite bodies are composed of 10-50% by weight, in particular approximately 40% by weight, of elastically compressible particles, 20-70% by weight, in particular 40-60% by weight from the combination of heat-effective blowing agents and heat-binding binders, and 0.5 - 20% by weight, in particular approximately 10% by weight of adhesive.
  • the combination of thermally active blowing agents and thermally active binders usually splits up to 40-80% by weight, in particular
  • blowing agent in particular blowing agent mixture, and 60-20% by weight, especially binder mixture.
  • the adhesive holding the components of the composite body together is a diisocyanate, in particular
  • Diphenylmethane diisocyanate which is preferably set with water.
  • the water from the steam jet or the aqueous medium with which the adhesive is added can be used for setting.
  • the adhesive that holds the components of the composite body together is a thermoplastic, in particular a thermoplastic that can be applied in an aqueous medium, for example as a dispersion. This can also serve as a heat-effective binder.
  • thermoplastics are polyvinyl acetate / ethylene copolymers and
  • the opening closure according to the invention is preferably porous and in particular has a rough surface. This makes it particularly easy to compress. On the other hand, the rough surface ensures good adhesion in the openings to be closed.
  • the opening closure according to the invention has the properties despite its heterogeneous composition of a homogeneous body.
  • the elastically compressible particles can be essentially solid, such as rubber pieces or cork pieces. However, they are preferably porous.
  • the composite body is a composite foam body, and the elastically compressible particles are foam particles.
  • Balls of fiber are also suitable as compressible particles. Fibers and other compressible particles can also be present in combination with one another.
  • the elastically compressible particles are open-pore, as is the case with fiber balls and open-pore foam particles.
  • the particle size of the individual components can vary within wide limits. In the case of the compressible particles, it is generally between 1 and 20 mm, in particular 1 and 5 mm.
  • the remaining constituents can be in the form of powders or particles with a particle size of 0.001-10 mm, preferably 0.1-5 mm, in particular 0.3-5 mm.
  • the opening closures according to the invention are preferably made from larger blocks. Sheets of suitable thickness can be cut from these. This is possible in a simple manner, since the material of the composite body can be cut easily, for example with knives, scissors or hot wires. Punching is also possible. As a result, any sizes and shapes of opening closures can be produced without having to keep special shapes in stock.
  • the resulting waste can be recycled in a simple manner by using it as an elastically compressible particle in the production of a new composite body. Since these particles then already contain the heat-effective binders and blowing agents, their amount can be reduced accordingly. It is also advantageously possible to prepare openings and recesses in the opening closures for the passage of lines, for example by partial punching.
  • the opening closures contain 800-400, in particular 750-600 l gas / m 3 .
  • the modulus of elasticity of the opening closures is generally from 1 • 10 3 to 1 ⁇ 10 5 N / m 2, preferably from 4 to 10 ⁇ 10 3 N / m 2, in particular about 7 • 10 3 N / m 2.
  • the opening closures advantageously have a compression hardness (at 40% compression) of 1 • 10 2 to 7 • 10 3 N / mm 2 , preferably 1, 3 to 5 ⁇ 10 2 N / mm 2 , in particular approx. 1, 7 • 10 2 N / mm 2 .
  • the Shore A hardness of the opening closures is preferably in the range of 10-40, preferably 12 to 20, in particular approximately 15. These mechanical properties can be varied in a suitable manner by controlling the production conditions.
  • a dry mixture is made from the following ingredients:
  • the cut surfaces were porous and not sticky. They had a uniform black-gray color, with individual expandable graphite particles being recognizable. Sheets were cut from the composite body, from which the desired shapes of the opening closures (cylinders, cuboids and the like) were punched out. For the formation of cable feedthroughs, holes of different sizes were pre-punched so that the respective hole cores could be pushed out by hand at the construction site without tools.
  • the opening closures could be bent and pressed together without the risk of breakage. They are so firm that they can be hammered into openings and pulled out of the openings without risk of breakage or tearing.
  • Cylindrical parts with a thickness of 6 cm can be cut from the composite bodies. These cylinders are suitable for sealing off holes in components through which electrical cables are led. If two of these cylinders are installed in a bore in a 120 mm thick concrete wall, through which electrical cables of up to 20 mm in diameter are passed, a fire resistance of more than 120 minutes according to DIN 3102, part 9 can be achieved.
  • Example 1 was repeated, first of all producing a granulate containing blowing agent and heat-binding agent. For this purpose
  • a dry mixture is produced from 45% by weight of a swelling agent granulate according to DE 39 30 722 A1, which already contains a heat-effective binder, and 50% by weight of a rubber foam ground to a size of 1-3 mm.
  • This mixture is sprayed with 5% by weight diphenylmethane diisocyanate, which is diluted 1: 1 with water.
  • This preliminary product is heated in a heated press mold with several bursts of steam to approx. 170 ° C., whereby it solidifies into a composite body with a density of 380 kg / m 2 .
  • the composite body has a modulus of elasticity of 2 • 10 4 N / m 2 and a compression hardness (40%) of 2.5 ⁇ 10 2 N / mm 2 .
  • the cross-section of the composite body is used to cut trapezoidal bodies which can be used to seal the trapezoidal sheet beads above walls inside buildings.
  • the composite bodies with a thickness of 120 mm have a fire resistance duration of more than 2 hours.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Sealing Material Composition (AREA)
  • Building Environments (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Insulated Conductors (AREA)
  • Control Of Combustion (AREA)

Abstract

A fire-resistant composite substrate for use in making structural openings fire-resistant, the substrate containing: (a) elastically compressible particles; (b) at least one heat-activated expanding agent; (c) at least one heat-activated binder; and (d) a diisocyanate adhesive.

Description

Feuerwiderstandsfähiger ÖffnungsverschlußFire-resistant opening lock
Die Erfindung betrifft einen feuerwiderstandsfähigen, elastischen Öffnungsverschluß in Form eines vorgeformten Verbundkörpers.The invention relates to a fire-resistant, elastic opening closure in the form of a preformed composite body.
In brandschutztechnisch klassifizierten Bauteilen (Wände, Decken) sind Öffnungen nicht zulässig, da sich im Falle eines Brandes Feuer und Rauch durch die Öffnungen hindurch in die angrenzenden Räume ausbreiten kann. Insbesondere dann, wenn durch diese Öffnungen Leitungen (Kabel, Rohre) hindurchgeführt werden, sind an den Werkstoff, der zum Verschluß der Restöffnung verwendet werden soll, besondere Anforderungen zu richten. Für die Abschottung solcher Öffnungen sind bisher bekannt:Openings are not permitted in components classified as fire protection (walls, ceilings), since in the event of a fire, fire and smoke can spread through the openings into the adjacent rooms. In particular, if lines (cables, pipes) are passed through these openings, special requirements must be made of the material to be used to close the remaining opening. For the sealing off of such openings are known so far:
Mineralfaserplatten oder lose Mineralfaser in Kombination mitMineral fiber boards or loose mineral fibers in combination with
Brandschutzbeschichtungen und Kitten,Fire protection coatings and putties,
Mörtelprodukte,Mortar products,
Brandschutzkissen sowieFire protection pillow as well
Polyurethan-Schaumkörper.Polyurethane foam body.
Diese Produkte haben zum Teil sehr gute Eigenschaften. Angestrebt wird jedoch die Kombination einer einfachen Herstellung und Verarbeitung, verbunden mit geringen Materialkosten, mit einem hohen Feuerwiderstand und der Möglichkeit eines raschen Ein- und Ausbauens.Some of these products have very good properties. However, the aim is to combine simple manufacture and processing, combined with low material costs, high fire resistance and the possibility of rapid installation and removal.
Aus dem deutschen Gebrauchsmuster G 87 16 908.6 ist ein feuer- und rauchdichter Verschluß für Wanddurchbrüche bekannt. Dieser Verschluß wird in Form eines konischen Stopfens hergestellt, indem ein feinporiger Zweikomponenten- Schaumstoff in einer geeigneten Rohform aufgeschäumt wird. In der Praxis hat sich gezeigt, daß derartige konische Stopfen in der Handhabung schwierig sind, was durch die klebrige Außenhaut verstärkt wird. Außerdem müssen zahlreiche Hohlformen vorgehalten werden, um verschieden große Stopfen zu erhalten.A fire and smoke-tight closure for wall openings is known from the German utility model G 87 16 908.6. This closure is produced in the form of a conical stopper by foaming a fine-pored two-component foam in a suitable raw form. In practice it has been shown that such conical plugs are difficult to handle, which is is reinforced by the sticky outer skin. In addition, numerous hollow molds must be kept in order to obtain plugs of different sizes.
In der DE 35 42 326 C1 ist ein schwer entflammbarer Verbundschaum aus Polyurethan-Schaumstoffflocken beschrieben. Dieser wird dadurch hergestellt, daß die Schaumstoffflocken mit im Brandfall aufblähbaren Intumeszenzmassen als Binder und/oder Zuschlagstoff vermischt und dann verpreßt werden. Als Zuschlagstoff können Intumeszenzmassen in Form von Blähgraphit und als Binder können Intumeszenzmassen in Form eines Epoxidharzes mit einem Melamin- Hydrohalogenid als Bindemittel verwendet werden. Der so gewonnene Verbundschaum eignet sich als Verbundschaumplatte zum Auflegen auf zu schützende Flächen.DE 35 42 326 C1 describes a flame-retardant composite foam made of polyurethane foam flakes. This is produced by mixing the foam flakes with intumescent materials which can be inflated in the event of fire as binders and / or additives and then pressing them together. Intumescent materials in the form of expanded graphite can be used as the additive and intumescent materials in the form of an epoxy resin with a melamine hydrohalide can be used as the binder. The composite foam obtained in this way is suitable as a composite foam panel for laying on surfaces to be protected.
Gegenstand der Erfindung ist ein feuerwiderstandsfähiger, elastischer Öffnungsverschluß in Form eines vorgeformten Verbundkörpers ausThe invention relates to a fire-resistant, elastic opening closure in the form of a preformed composite body
a) mindestens einer Art von elastisch komprimierbaren Parikeln, b) mindestens einem bei Hitzeentwicklung wirksam werdenden Blähmittel, c) mindestens einem bei Hitzeentwicklung wärmewirksamen Bindemittel und d) mindestens einem Klebstoff, durch den die elastischen komprimierbaren Partikel und die anderen Bestandteile zu dem Verbundkörper verbunden sind.a) at least one type of elastically compressible particle, b) at least one blowing agent that becomes effective when heat is generated, c) at least one binder that is heat-effective when heat is generated, and d) at least one adhesive that connects the elastic compressible particles and the other components to form the composite body .
Der erfindungsgemäße Öffnungsverschluß läßt sich in einfacher Weise herstellen und zwar weitgehend oder vollständig unter Verwendung von Recyciingmaterial. Der erfindungsgemäße Öffnungsverschluß hat hervorragende mechanische Eigenschaften, insbesondere was eine Festigkeit, Abriebbeständigkeit und Elastizität betrifft. Der erfindungsgemäße Öffnungsverschluß hat hervorragende brandtechnische Eigenschaften. Er kann ohne Schwierigkeiten so formuliert werden, daß sein Feuerwiderstand über F90 nach DIN 4102 liegt. Damit liegt sein Feuerwiderstand in der Größe des Feuerwiderstandes von Betonbauteilen, was besonders vorteilhaft ist. Das bei Hitzeentwicklung wirksam werdende Blähmittel führt im Brandfalle zu einer Volumenvergrößerung und sorgt für einen besonders dichten Abschluß der Öffnung. Ferner werden zusätzliche Hohlräume geschaffen, die die Wärmeisolation vergrößern. Das mindestens ein bei Hitzeentwicklung wärmewirksames Bindemittel wird unter Einwirkung von Hitze klebrig und sorgt dafür, daß die einzelnen Bestandteile des Verbundkörpers im Brandfalle zusammenhalten und nicht zerbröseln. Von Vorteil sind mindestens zwei bei verschiedenen Temperaturen anspringende wärmewirksame Bindemittel vorgesehen. Als wärmewirksame Bindemittel eigenen sich insbesondere organische Thermoplaste, die bei niederen Temperaturen schmelzen, anorganische Schmelzkleber, wie Borate, Ammoniumpolyphosphat, das über einen weiten Temperaturbereich erweicht und gleichzeitig flammhemmende Eigenschaften besitzt, sowie Glas, das seine Klebeeigenschaften bei höheren Temperaturen entwickelt. Das Glas liegt insbesondere zur Vermeidung einer Entmischung der Rohstoffe vorzugsweise in feinteiliger Form, insbesondere in Form von Fasern, Mikrohohlkugeln oder Glasmehl, vor.The opening closure according to the invention can be produced in a simple manner, to a large extent or completely using recycled material. The opening closure according to the invention has excellent mechanical properties, in particular with regard to strength, abrasion resistance and elasticity. The opening closure according to the invention has excellent fire properties. It can easily be formulated so that its fire resistance is above F90 according to DIN 4102. His fire resistance is therefore the same as the fire resistance of concrete components, which is particularly advantageous. In the event of fire, the blowing agent, which becomes effective when the heat develops, increases the volume and ensures a particularly tight seal of the opening. Furthermore, additional cavities are created that increase the thermal insulation. The at least one heat-effective binder becomes sticky when exposed to heat and ensures that the individual components of the composite body hold together in the event of a fire and do not crumble. At least two heat-binding binders starting at different temperatures are advantageously provided. Organic thermoplastics that melt at low temperatures, inorganic hot-melt adhesives such as borates, ammonium polyphosphate, which softens over a wide temperature range and at the same time have flame-retardant properties, and glass, which develops their adhesive properties at higher temperatures, are particularly suitable as heat-binding binders. In order to avoid segregation of the raw materials, the glass is preferably in finely divided form, in particular in the form of fibers, hollow microspheres or glass powder.
Bei einer bevorzugten Ausführungsform sind als Blähmittel mindestens zwei bei verschiedenen Temperaturen aufblähende Blähmittel vorgesehen. Auch hierdurch können die Bläheigenschaften über einen weiten Temperaturbereich gesteuert werden. Als Blähmittel eignet sich insbesondere Blähgraphit und, wenn eine Aufblähung auch bei hohen Temperaturen erwünscht ist, auch ungeblähter Vermiculit und/oder Perlit.In a preferred embodiment, at least two blowing agents which expand at different temperatures are provided as blowing agents. This also allows the blowing properties to be controlled over a wide temperature range. Expandable graphite is particularly suitable as a blowing agent and, if bloating is desired even at high temperatures, also unexpanded vermiculite and / or pearlite.
Zur Herstellung des Verbundkörpers können die einzelnen Bestandteile in feinteiliger Form vorgemischt werden, wonach die Mischung mit dem Kleber versehen wird, vorzugsweise indem dieser auf die bewegte Mischung aufgesprüht wird. Die mit dem Kleber benetzte Mischung wird daraufhin vorzugsweise unter Einwirkung von Wärme zu einem Block verpreßt, wobei die Wärme insbesondere mit Hilfe eines Dampfstoßes gleichmäßig in die Mischung eingebracht werden kann.To produce the composite body, the individual components can be premixed in finely divided form, after which the mixture is provided with the adhesive, preferably by spraying it onto the moving mixture. The mixture wetted with the adhesive is then preferably pressed into a block under the action of heat, the heat being able to be introduced evenly into the mixture, in particular with the aid of a steam jet.
Bei einer bevorzugten Ausführungsform der Erfindung liegt das mindestens eine Blähmittel und das mindestens eine wärmewirksame Bindemittel in Form eines beide Bestandteile enthaltenden Granulats vor. Dadurch wird eine sehr gleichmäßige Verteilung der Bestandteile im Öffnungsverschluß erhalten, wodurch sich sehr gleichmäßige mechanische und brandtechnische Eigenschaften ergeben. Besonders geeignete Granulate dieser Art sind in der DE 39 30 722 A1 als Quellmittelzusammensetzung beschrieben. Auf den Inhalt dieser Druckschrift wird hier ausdrücklich Bezug genommen. In der Regel sind die Verbundkörper zusammengesetzt aus 10 - 50 Gew%, insbesondere ca. 40 Gew% an elastisch komprimierbaren Partikeln, 20 - 70 Gew%, insbesondere 40 - 60 Gew% aus der Kombination von wärmewirksamen Blähmitteln und wärmewirksamen Bindemittel sowie 0,5 - 20 Gew%, insbesondere ca. 10 Gew% Kleber. Die Kombination aus wärmewirksamen Blähmittel und wärmewirksamen Bindemittel spaltet sich in der Regel auf in 40 - 80 Gew%, insbesondereIn a preferred embodiment of the invention, the at least one blowing agent and the at least one thermally active binder are in the form of a granulate containing both components. This will make it a very even one Distribution of the components in the opening closure obtained, which results in very uniform mechanical and fire properties. Particularly suitable granules of this type are described in DE 39 30 722 A1 as a swelling agent composition. The content of this publication is expressly referred to here. As a rule, the composite bodies are composed of 10-50% by weight, in particular approximately 40% by weight, of elastically compressible particles, 20-70% by weight, in particular 40-60% by weight from the combination of heat-effective blowing agents and heat-binding binders, and 0.5 - 20% by weight, in particular approximately 10% by weight of adhesive. The combination of thermally active blowing agents and thermally active binders usually splits up to 40-80% by weight, in particular
30 - 50 % Blähmittel, insbesondere Blähmittelmischung, und 60 - 20 Gew%, insbesondere Bindemittelmischung.30-50% blowing agent, in particular blowing agent mixture, and 60-20% by weight, especially binder mixture.
Der die Bestandteile des Verbundkörpers zusammenhaltende Klebstoff ist bei einer bevorzugten Ausführungsform ein Diisocynat, insbesondereIn a preferred embodiment, the adhesive holding the components of the composite body together is a diisocyanate, in particular
Diphenylmethandiisocynat, das vorzugsweise mit Wasser abgebunden ist. Zum Abbinden kann das Wasser des Dampfstoßes oder das wässrige Medium, mit dem der Kleber zudosiert wird, verwendet werden. Bei einer anderen, ebenfalls bevorzugten Ausführungsform der Erfindung ist der die Bestandteile des Verbundkörpers zusammenhaltende Klebstoff ein Thermoplast, insbesondere ein in wässrigem Medium, zum Beispiel als Dispersion, aufbringbarer Thermoplast. Dieser kann gleichzeitig als wärmewirksames Bindemittel dienen. Beispiele für solche Thermoplaste sind Polyvinylacetat/Ethylen-Copolymere undDiphenylmethane diisocyanate, which is preferably set with water. The water from the steam jet or the aqueous medium with which the adhesive is added can be used for setting. In another, likewise preferred embodiment of the invention, the adhesive that holds the components of the composite body together is a thermoplastic, in particular a thermoplastic that can be applied in an aqueous medium, for example as a dispersion. This can also serve as a heat-effective binder. Examples of such thermoplastics are polyvinyl acetate / ethylene copolymers and
Polyvinylacetet/Ethylen/Vinylchlorid-Terpolymere.Polyvinyl acetate / ethylene / vinyl chloride terpolymers.
Der erfindungsgemäße Öffnungsverschluß ist vorzugsweise porös und weist insbesondere eine rauhe Oberfläche auf. Dadurch ist er einerseits besonders gut komprimierbar. Auf der anderen Seite bringt die rauhe Oberfläche eine gute Haftung in den zu verschließenden Öffnungen.The opening closure according to the invention is preferably porous and in particular has a rough surface. This makes it particularly easy to compress. On the other hand, the rough surface ensures good adhesion in the openings to be closed.
Interessanterweise hat sich herausgestellt, daß der erfindungsgemäße Öffnungsverschluß trotz seiner heterogenen Zusammensetzung die Eigenschaften eines homogenen Körpers besitzt. Dies ist zum Teil dadurch bedingt, daß die Teilchengröße der einzelnen Bestandteile, insbesondere der elastisch verformbaren Partikel, verschieden ist, wodurch eine gleichmäßige und dichte Packung ermöglicht ist. Die elastisch komprimierbaren Partikel können im wesentlichen massiv sein, wie Gummistücke oder Korkstücke. Sie sind jedoch vorzugsweise porös. So ist bei einer bevorzugten Ausführungsform der Verbundkörper ein Verbundschaumkörper, und die elastisch komprimierbaren Partikel sind Schaumstoffpartikel. Als komprimierbare Partikel eigenen sich auch Faserknäuel. Auch können Fasern und andere komprimierbare Partikel in Kombination miteinander vorliegen. Die elastisch komprimierbaren Partikel sind bei bevorzugten Ausführungsformen offenporig, wie dies bei Faserknäueln und offenporigen Schaumstoffpartikeln der Fall ist. Bei solchen offenporigen Partikeln können kleinere Bestandteile der Mischung in die Poren teilweise eindringen, wodurch die Homogenität weiter gefördert wird. Die Teilchengröße der einzelnen Bestandteile kann innerhalb weiter Grenzen variieren. Bei den komprimierbaren Partikeln liegt sie in der Regel zwischen 1 und 20 mm, insbesondere 1 und 5 mm. Die übrigen Bestandteile können in Form von Pulvern oder Partikeln mit einer Teilchengröße von 0,001 - 10 mm, vorzugsweise 0,1 - 5 mm, insbesondere 0,3 - 5 mm, vorliegen.Interestingly, it has been found that the opening closure according to the invention has the properties despite its heterogeneous composition of a homogeneous body. This is partly due to the fact that the particle size of the individual components, in particular the elastically deformable particles, is different, which enables a uniform and dense packing. The elastically compressible particles can be essentially solid, such as rubber pieces or cork pieces. However, they are preferably porous. In a preferred embodiment, the composite body is a composite foam body, and the elastically compressible particles are foam particles. Balls of fiber are also suitable as compressible particles. Fibers and other compressible particles can also be present in combination with one another. In preferred embodiments, the elastically compressible particles are open-pore, as is the case with fiber balls and open-pore foam particles. With such open-pore particles, smaller constituents of the mixture can partially penetrate into the pores, which further promotes homogeneity. The particle size of the individual components can vary within wide limits. In the case of the compressible particles, it is generally between 1 and 20 mm, in particular 1 and 5 mm. The remaining constituents can be in the form of powders or particles with a particle size of 0.001-10 mm, preferably 0.1-5 mm, in particular 0.3-5 mm.
Die erfindungsgemäßen Öffnungsverschlüsse sind, wie oben bereits erwähnt, vorzugsweise aus größeren Blöcken hergestellt. Aus diesen können Platten geeigneter Dicke geschnitten werden. Dies ist in einfacher Weise möglich, da das Material der Verbundkörper leicht schneidbar ist, zum Beispiel mit Messern, Scheren oder Heißdrähten. Auch ein Ausstanzen ist möglich. Dadurch können, ohne daß besondere Formen vorrätig gehalten werden müssen, beliebige Größen und Gestalten an Öffnungsverschlüssen hergestellt werden. Dabei anfallender Verschnitt kann in einfacher Weise recycelt werden, indem er bei der Produktion von neuem Verbundkörper als elastisch komprimierbare Partikel verwendet wird. Da diese Partikel dann schon die wärmewirksamen Bindemittel und Blähmittel enthalten, kann deren Menge entsprechend zurückgenommen werden. Es ist mit Vorteil auch möglich, in den Öffnungsverschlüssen Durchbrechungen und Ausnehmungen für die Hindurchführung von Leitungen vorzubereiten, zum Beispiel durch teilweises Stanzen. Da die Dichte der Ausgangsmaterialien in der Regel bei ca. 1 liegt, enthalten die Öffnungsverschlüsse entsprechend 800 - 400, insbesondere 750 - 600 I Gas/m3. Der Elastizitätsmodul der Öffnungsverschlüsse liegt in der Regel bei 1 • 103 bis 1 ■ 105 N/m2, vorzugsweise bei 4 bis 10 ■ 103 N/m2, insbesondere bei ca. 7 • 103 N/m2. Die Öffnungsverschlüsse besitzen vorteilhafterweise eine Stauchhärte (bei 40 % Stauchung) von 1 • 102 bis 7 • 103 N/mm2, vorzugsweise 1 ,3 bis 5 ■ 102 N/mm2, insbesondere ca. 1 ,7 • 102 N/mm2. Die Shore-A-Härte der Öffnungsverschlüsse liegt bevorzugt im Bereich von 10 - 40, vorzugsweise 12 bis 20, insbesondere ca. 15. Diese mechanischen Eigenschaften lassen sich durch Steuerung der Herstellungsbedingungen in geeigneter Weise variieren.As already mentioned above, the opening closures according to the invention are preferably made from larger blocks. Sheets of suitable thickness can be cut from these. This is possible in a simple manner, since the material of the composite body can be cut easily, for example with knives, scissors or hot wires. Punching is also possible. As a result, any sizes and shapes of opening closures can be produced without having to keep special shapes in stock. The resulting waste can be recycled in a simple manner by using it as an elastically compressible particle in the production of a new composite body. Since these particles then already contain the heat-effective binders and blowing agents, their amount can be reduced accordingly. It is also advantageously possible to prepare openings and recesses in the opening closures for the passage of lines, for example by partial punching. Since the density of the starting materials is usually around 1, the opening closures contain 800-400, in particular 750-600 l gas / m 3 . The modulus of elasticity of the opening closures is generally from 1 • 10 3 to 1 ■ 10 5 N / m 2, preferably from 4 to 10 ■ 10 3 N / m 2, in particular about 7 • 10 3 N / m 2. The opening closures advantageously have a compression hardness (at 40% compression) of 1 • 10 2 to 7 • 10 3 N / mm 2 , preferably 1, 3 to 5 ■ 10 2 N / mm 2 , in particular approx. 1, 7 • 10 2 N / mm 2 . The Shore A hardness of the opening closures is preferably in the range of 10-40, preferably 12 to 20, in particular approximately 15. These mechanical properties can be varied in a suitable manner by controlling the production conditions.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Beispielen in Verbindung mit den Unteransprüchen. Hierbei können die einzelnen Merkmale jeweils für sich und zu mehreren Kombinationen miteinander bei einer Ausführungsform der Erfindung verwirklicht sein.Further features and advantages of the invention result from the following description of examples in connection with the subclaims. Here, the individual features can be implemented individually and in several combinations with one another in one embodiment of the invention.
Beispiel 1example 1
Es wird eine trockene Mischung hergestellt aus folgenden Bestandteilen:A dry mixture is made from the following ingredients:
45 Gewichtsteilen Schnitzel aus Polyurethan-Weichschaum mit unterschiedlicher Teilchengröße im Bereich von 1 - 7 mm 10 Gewichtsteilen Zinkborat als anorganischer Schmelzkleber45 parts by weight of schnitzel made of flexible polyurethane foam with different particle sizes in the range of 1 - 7 mm 10 parts by weight of zinc borate as an inorganic hot melt adhesive
12,5 Gewichtsteilen Glasmikrohohlkugelh12.5 parts by weight of hollow glass microball
9,5 Gewichtsteilen Ammoniumpolyphosphat und9.5 parts by weight of ammonium polyphosphate and
13 Gewichtsteilen Blähgraphit.13 parts by weight of expanded graphite.
Während die Mischung weiter vermischt wird, werden ihr 10 Gewichtsteile Diphenylmethandiisocyanat, das in Wasser dispergiert ist, zugedüst. Danach wird die Mischung in einer beheizten Preßform durch mehrere Dampfstöße auf ca. 150 °C erwärmt, wodurch sie zu einem porösen Schaumstoffverbundkörper mit einer Dichte von 300 kg/m3 verpreßt und verfestigt wurde. Der dabei erhaltene Verbundkörper hatte eine Shore-A-Härte von 15, einen Elastizitätsmodul von 6 ■ 103 N/m2 und eine Stauchhärte (40 %) von 2 • 102 N/mm2.As the mixture is further mixed, 10 parts by weight of diphenylmethane diisocyanate dispersed in water are sprayed into it. The mixture is then heated in a heated press mold to approximately 150 ° C. by means of several bursts of steam, as a result of which it is pressed and solidified to form a porous foam composite body with a density of 300 kg / m 3 . The composite body obtained had a Shore A hardness of 15, a modulus of elasticity of 6 · 10 3 N / m 2 and a compression hardness (40%) of 2 • 10 2 N / mm 2 .
Die Schnittflächen waren porös und nicht klebrig. Sie hatten eine gleichmäßig schwarz-graue Farbe, wobei einzelne Blähgraphitteilchen zu erkennen waren. Aus dem Verbundkörper wurden Platten geschnitten, aus denen wiederum die gewünschten Formen der Öffnungsverschlüsse (Zylinder, Quader und dergleichen) ausgestanzt wurden. Für die Bildung von Kabeldurchführungen wurden verschieden große Löcher so vorgestanzt, daß die jeweiligen Lochkerne an der Baustelle ohne Werkzeug von Hand herausgedrückt werden konnten.The cut surfaces were porous and not sticky. They had a uniform black-gray color, with individual expandable graphite particles being recognizable. Sheets were cut from the composite body, from which the desired shapes of the opening closures (cylinders, cuboids and the like) were punched out. For the formation of cable feedthroughs, holes of different sizes were pre-punched so that the respective hole cores could be pushed out by hand at the construction site without tools.
Die Öffnungsverschlüsse konnten ohne Bruchgefahr gebogen und zusammengedrückt werden. Sie sind so fest, daß sie mit dem Hammer in Öffnungen eingeschlagen und ohne Bruch- oder Zerreißgefahr aus den Öffnungen wieder herausgezogen werden konnten.The opening closures could be bent and pressed together without the risk of breakage. They are so firm that they can be hammered into openings and pulled out of the openings without risk of breakage or tearing.
Aus den Verbundkörpern können zylinderförmige Teile mit Dicke 6 cm geschnitten werden. Diese Zylinder eigenen sich zur Abschottung von Bohrungen in Bauteilen, durch welche Elektrokabel geführt werden. Werden zwei dieser Zylinder in eine Bohrung in einer 120 mm dicken Betonwand eingebaut, durch welche Elektrokabel von bis zu 20 mm Durchmesser geführt werden, so läßt sich hiermit ein Feuerwiderstand von mehr als 120 Minuten nach DIN 3102, Teil 9, erreichen.Cylindrical parts with a thickness of 6 cm can be cut from the composite bodies. These cylinders are suitable for sealing off holes in components through which electrical cables are led. If two of these cylinders are installed in a bore in a 120 mm thick concrete wall, through which electrical cables of up to 20 mm in diameter are passed, a fire resistance of more than 120 minutes according to DIN 3102, part 9 can be achieved.
Beispiel 2Example 2
Beispiel 1 wurde wiederholt, wobei zunächst ein Blähmittel und wärmewirksames Bindemittel enthaltendes Granulat hergestellt wurde. Hierzu wurdenExample 1 was repeated, first of all producing a granulate containing blowing agent and heat-binding agent. For this purpose
25 Gew% Polyvinylacetat in Form eines feinen Granulats,25% by weight of polyvinyl acetate in the form of fine granules,
35 Gew% Blähgraphit,35% by weight expanded graphite,
30 Gew% Glasmikrohohlkugeln mit einem Schmelzbeginn von ca. 70030% by weight of hollow glass microspheres with a melting point of approx. 700
°C sowie° C as well
9,5 Gew% Borax und9.5% by weight of borax and
0,5 Gew% hydrophobe Kieselsäure unter Erwärmen miteinander vermischt, wobei das thermoplastische Polyvinylacetat erweicht und eine Bindung der Mischung herbeiführte. Nach dem Erkalten wird der erhaltene Kuchen zu einem Granulat mit einer Teilchengröße von 1 - 3 mm granuliert. 50 Gewichtsteile dieses Granulats wurden mit 40 Gewichtsteilen Polyurethan-Weichschaumschnitzeln sorgfältig vermischt, wonach 10 Gewichtsteile Polyvinylacetat/Ethylencopolymer-Pulver zugegeben wurden. Diese Mischung wird in eine Form eingefüllt, auf 120 °C aufgeheizt, 15 Minuten bei dieser Temperatur belassen und dann auf Raumtemperatur abgekühlt. Aus dem erhaltenen Verbundkörper bzw. den daraus geschnittenen Platten wurden wiederum Öffnungsverschlüsse ausgeschnitten bzw. ausgestanzt. Diese hatten ähnliche physikalische Eigenschaften wie in Beipiel 1. Bei Zugabe von Wasser quollen die Verschlüsse an der Oberfläche auf, was zu einem Verschließen und damit Abdichten der Porosität der Öffnungsverschlüsse an ihren Oberflächen führte.0.5% by weight of hydrophobic silica mixed with each other with heating, the thermoplastic polyvinyl acetate softening and causing the mixture to bind. After cooling, the cake obtained is granulated into granules with a particle size of 1-3 mm. 50 parts by weight of these granules were carefully mixed with 40 parts by weight of flexible polyurethane foam chips, after which 10 parts by weight of polyvinyl acetate / ethylene copolymer powder were added. This mixture is poured into a mold, heated to 120 ° C., left at this temperature for 15 minutes and then cooled to room temperature. Opening closures were in turn cut or punched out of the composite body obtained or the plates cut therefrom. These had similar physical properties as in Example 1. When water was added, the closures swelled on the surface, which resulted in a closure and thus sealing of the porosity of the opening closures on their surfaces.
Beispiel 3Example 3
Es wird eine trockene Mischung hergestellt aus 45 Gew% eines Quellmittelgranulats nach DE 39 30 722 A1 , welches bereits wärmewirksames Bindemittel enthält, und 50 Gew% eines auf eine Größe von 1 - 3 mm gemahlenen Kautschukschaumes. Diese Mischung wird mit 5 Gew% Diphenylmethandiisocynat, welches 1 :1 mit Wasser verdünnt ist, besprüht. Dieses Vorprodukt wird in einer beheizten Preßform mit mehreren Dampfstößen auf ca. 170 °C erwärmt, wodurch es sich zu einem Verbundkörper mit Dichte 380 kg/m2 verfestigt. Der Verbundkörper besitzt einen Elastizitätsmodul von 2 • 104 N/m2 und eine Stauchhärte (40 %) von 2,5 ■ 102 N/mm2. Aus dem Verbundkörper werden im Querschnitt trapezförmige Körper zugeschnitten, die zur Abdichtung der Trapezblechsicken oberhalb von Wänden innerhalb von Gebäuden verwandt werden können. Bei einem Brandversuch nach DIN 4102, Teil 2, besitzen die Verbundkörper bei einer Dicke von 120 mm eine Feuerwiderstandsdauer von mehr als 2 Stunden. A dry mixture is produced from 45% by weight of a swelling agent granulate according to DE 39 30 722 A1, which already contains a heat-effective binder, and 50% by weight of a rubber foam ground to a size of 1-3 mm. This mixture is sprayed with 5% by weight diphenylmethane diisocyanate, which is diluted 1: 1 with water. This preliminary product is heated in a heated press mold with several bursts of steam to approx. 170 ° C., whereby it solidifies into a composite body with a density of 380 kg / m 2 . The composite body has a modulus of elasticity of 2 • 10 4 N / m 2 and a compression hardness (40%) of 2.5 ■ 10 2 N / mm 2 . The cross-section of the composite body is used to cut trapezoidal bodies which can be used to seal the trapezoidal sheet beads above walls inside buildings. In a fire test according to DIN 4102, part 2, the composite bodies with a thickness of 120 mm have a fire resistance duration of more than 2 hours.

Claims

Patentansprüche claims
1. Feuerwiderstandsfähiger, elastischer Öffnungsverschluß in Form eines vorgeformten Verbundkörpers aus1. Fire-resistant, elastic opening closure in the form of a preformed composite body
a) mindestens einer Art von elastisch komprimierbaren Partikeln, b) mindestens einem bei Hitzeeinwirkung wirksam werdenden Blähmittel, c) mindestens einem bei Hitzeeinwirkung wärmewirksamen Bindemittel, und d) mindestens einem Klebstoff, durch den die elastisch komprimierbaren Partikel und die anderen Bestandteile zu dem Verbundkörper verbunden sind.a) at least one type of elastically compressible particles, b) at least one blowing agent which becomes effective when exposed to heat, c) at least one binder which is heat-effective when exposed to heat, and d) at least one adhesive by means of which the elastically compressible particles and the other constituents are combined to form the composite body are.
2. Öffnungsverschluß nach Anspruch 1 , dadurch gekennzeichnet, daß mindestens zwei bei verschiedenen Temperaturen anspringende wärmewirksame Bindemittel vorgesehen sind.2. Opening closure according to claim 1, characterized in that at least two heat-effective binders starting at different temperatures are provided.
3. Öffnungsverschluß nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß als das mindestens eine wärmewirksame Bindemittel organische Thermoplaste, und/oder anorganische Schmelzkleber, wie insbesondere Ammoniumpolyphosphat, Zinkborat und/oder Glas vorgesehen sind.3. Opening closure according to claim 1 or 2, characterized in that as the at least one heat-binding binder organic thermoplastics, and / or inorganic hot melt adhesives, such as in particular ammonium polyphosphate, zinc borate and / or glass are provided.
4. Öffnungsverschluß nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß als Blähmittel mindestens zwei bei verschiedenen Temperaturen aufblähende Blähmittel vorgesehen sind.4. Opening closure according to one of the preceding claims, characterized in that at least two blowing agents are provided as blowing agents at different temperatures.
5. Öffnungsverschluß nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß als Blähmittel Blähgraphit und ggf. ungeblähter Vermiculit und/oder Perlit vorgesehen sind.5. Opening closure according to one of the preceding claims, characterized in that expandable graphite and possibly unexpanded vermiculite and / or pearlite are provided as blowing agents.
6. Öffnungsverschluß nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das mindestens eine Blähmittel und das mindestens eine wärmewirksame Bindemittel in Form eines beide Bestandteile enthaltenen Granulats vorliegen. 6. Opening closure according to one of the preceding claims, characterized in that the at least one blowing agent and the at least one thermally active binder are in the form of a granulate containing both components.
7. Öffnungsverschluß nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der die Bestandteile des Verbundkörpers zusammenhaltende Klebstoff ein Diisocyanat, insbesondere Diphenylmethandiisocyanat (MDI) ist, das insbesondere mit Wasser abgebunden ist.7. Opening closure according to one of the preceding claims, characterized in that the adhesive holding the components of the composite body together is a diisocyanate, in particular diphenylmethane diisocyanate (MDI), which is in particular bound with water.
8. Öffnungsverschluß nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der die Bestandteile des Verbundkörpers zusammenhaltende Klebstoff ein in wässrigem Medium aufbringbarer Thermoplast ist, der gleichzeitig als wärmewirksames Bindemittel dient.8. Opening closure according to one of claims 1 to 6, characterized in that the adhesive holding the components of the composite body together is a thermoplastic which can be applied in an aqueous medium and which also serves as a heat-binding agent.
9. Öffnungsverschluß nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Verbundkörper porös ist und eine rauhe Oberfläche besitzt.9. Opening closure according to one of the preceding claims, characterized in that the composite body is porous and has a rough surface.
10. Öffnungsverschluß nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Verbundkörper ein Verbundschaumkörper ist und die elastisch komprimierbaren Partikel Schaumschoffpartikel sind.10. Opening closure according to one of the preceding claims, characterized in that the composite body is a composite foam body and the elastically compressible particles are foam particles.
11. Öffnungsverschluß nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß er durch Schneiden oder dergleichen aus einem größeren Verbundkörper geformt ist.11. Opening closure according to one of the preceding claims, characterized in that it is formed by cutting or the like from a larger composite body.
12. Öffnungsverschluß nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß er einen Elastizitätsmodul von 1 ■ 103 bis 1 • 105 N/m2, insbesondere ca. 7 • 103 N/m2, besitzt.12. Opening closure according to one of the preceding claims, characterized in that it has a modulus of elasticity of 1 ■ 10 3 to 1 • 10 5 N / m 2 , in particular approximately 7 • 10 3 N / m 2 .
13. Öffnungsverschluß nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß er eine Stauchhärte (40 %) von 1 • 102 bis 1 • 103 N/mm2, insbesondere ca. 1 ,7 • 102 N/mm2, besitzt.13. Opening closure according to one of the preceding claims, characterized in that it has a compression hardness (40%) of 1 • 10 2 to 1 • 10 3 N / mm 2 , in particular approximately 1, 7 • 10 2 N / mm 2 .
14. Öffnungsverschluß nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß er eine Shore-A-Härte von 10 - 40, insbesondere von ca. 15, besitzt. 14. Opening closure according to one of the preceding claims, characterized in that it has a Shore A hardness of 10-40, in particular of about 15.
15. Öffnungsverschluß nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß seine Dichte im Bereich von 200 - 600 kg/m2, insbesondere 250 - 400 kg/m2, liegt.15. Opening closure according to one of the preceding claims, characterized in that its density is in the range of 200-600 kg / m 2 , in particular 250-400 kg / m 2 .
16. Öffnungsverschluß nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sein Feuerwiderstand 30 - 120 Minuten (nach DIN 4102) ist.16. Opening closure according to one of the preceding claims, characterized in that its fire resistance is 30-120 minutes (according to DIN 4102).
n n
EP98908030A 1997-02-08 1998-01-31 Fire-resistant opening seal Expired - Lifetime EP0960251B1 (en)

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DE19704833A DE19704833A1 (en) 1997-02-08 1997-02-08 Fire-resistant opening lock
PCT/EP1998/000517 WO1998035122A1 (en) 1997-02-08 1998-01-31 Fire-resistant opening seal

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ATE236337T1 (en) 2003-04-15
DE59807738D1 (en) 2003-05-08
DK0960251T3 (en) 2003-07-28
AU721890B2 (en) 2000-07-13
WO1998035122A1 (en) 1998-08-13
AU6618298A (en) 1998-08-26
EP0960251B1 (en) 2003-04-02
DE19704833A1 (en) 1998-08-13

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