EP0254898A2 - Fire and sound protection coffer - Google Patents
Fire and sound protection coffer Download PDFInfo
- Publication number
- EP0254898A2 EP0254898A2 EP19870109504 EP87109504A EP0254898A2 EP 0254898 A2 EP0254898 A2 EP 0254898A2 EP 19870109504 EP19870109504 EP 19870109504 EP 87109504 A EP87109504 A EP 87109504A EP 0254898 A2 EP0254898 A2 EP 0254898A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fire
- protection
- sound insulation
- intumescent
- sheets
- 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.)
- Withdrawn
Links
- 238000009413 insulation Methods 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 4
- 239000011814 protection agent Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 238000005538 encapsulation Methods 0.000 claims 1
- 239000011888 foil Substances 0.000 claims 1
- 239000003365 glass fiber Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 14
- 239000011111 cardboard Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 238000005187 foaming Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011093 chipboard Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 229920000965 Duroplast Polymers 0.000 description 1
- 239000004638 Duroplast Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/942—Building elements specially adapted therefor slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/86—Sound-absorbing elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
- E04B2001/8442—Tray type elements
Definitions
- the present invention relates to a fire and sound insulation cassette consisting of one or more intumescent fire protection sheets and one or more sound protection sheets.
- Fire protection doors for example, regardless of whether the door leaf consists of edge-compacted chipboard or a hardwood frame with a central web made of chipboard, are also significantly heavier in weight than normal apartment doors, the filling of which is formed by cardboard honeycomb panels or perforated light fiber panels. Due to the considerable weight differences, fire protection doors can in most cases not be hung in the existing door frames, which of course makes their use considerably more expensive.
- intumescent materials also known as DSB insulating layer-forming materials
- British patent specification GB 23 580-A describes a honeycomb structure in the cells of which a fire extinguishing liquid or a flowable fire extinguishing agent is contained.
- the principle of dividing the fire protection agent into separate cells (chambers) is also the subject of OS-DE 31 25 577, in which case the chambers are filled with a powdery intumescent material.
- a honeycomb panel construction in particular as a cardboard honeycomb panel.
- the object of the invention is to construct a light, mechanically resistant composite element with fire and sound-proofing properties.
- the fire resistance duration of the incombustible covering should be such that the thermal foam forming under the influence of heat can develop and stabilize fully before the covering burns through.
- the number and thickness of the intumescent fire protection membranes should allow all wooden rooms in the cassette to be completely foamed in the event of a fire.
- a soundproofing membrane made of 36 mm thick cardboard honeycomb was covered on both sides with 2mm thick intumescent fire protection membranes 1, 1 ⁇ (Interdens VP 80 from Dr. Wolman GmbH) and on all sides with a 0.5mm thick fire protection fleece 3 (Interdens V from Dr. Wolman GmbH) wrapped.
- This cassette with the external dimensions of 920 x 920 x 41 mm was anchored with a 41 mm thick and 40 mm wide edge band made of oak.
- Example 1 A model wall with the same dimensions as in Example 1 was manufactured according to the structure shown in FIG. A 2 mm thick intumescent fire protection membrane 1 (Interdens VP 80 from Dr. Wolman GmbH) was layered on both sides with 18.5 mm thick perforated soundproofing panels made of Duroplast 2, 2 ⁇ and covered with 1 mm on all sides strong fire protection vapor barrier sheet 3 (Interdens AL from Dr. Wolman GmbH).
- a 2 mm thick intumescent fire protection membrane 1 (Interdens VP 80 from Dr. Wolman GmbH) was layered on both sides with 18.5 mm thick perforated soundproofing panels made of Duroplast 2, 2 ⁇ and covered with 1 mm on all sides strong fire protection vapor barrier sheet 3 (Interdens AL from Dr. Wolman GmbH).
- a fire door based on the cassette according to the invention will have a dead weight of less than 35 kg, which allows its use in normal door frames.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
- Building Environments (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Brand- und Schallschutzkassette, bestehend aus einer oder mehreren Intumeszenzbrandschutzbahnen und einer oder mehreren Schallschutzbahnen.The present invention relates to a fire and sound insulation cassette consisting of one or more intumescent fire protection sheets and one or more sound protection sheets.
Vom Brandverhalten her klassifizierte Bauteile und Sonderbauteile sind im Teil 4 der DIN 4102 aufgelistet.Components and special components classified according to fire behavior are listed in Part 4 of DIN 4102.
Augenfällig bei dieser Auflistung ist die vorwiegend massive Ausführung der Bauteile, was sich auch in erheblichen Gewichten niederschlägt. Das gleiche gilt auch für die aufgrund spezieller Zulassungsbescheide vertriebenen, feuerbeständigen Feuerabschlüsse (Klappen, Türen und Tore). Ihre durchweg massiven Konstruktionen sind in den meisten Fällen so schwer, daß beim Einbau besondere Maßnahmen erforderlich sind.What is striking in this list is the predominantly solid design of the components, which is also reflected in considerable weights. The same also applies to the fire-resistant fire closures (flaps, doors and gates) sold on the basis of special approval notices. Their consistently massive constructions are so heavy in most cases that special measures are required during installation.
Auch bei feuerhemmenden Bauteilen aus Holz oder Holzwerkstoffen ist die Situation nicht viel besser. Brandschutztüren zum Beispiel sind unabhängig davon, ob das Türblatt aus kantenverdichteten Spanplatten oder aus Hartholzrahmen mit einem Mittelsteg aus Holzspanplatten besteht, im Gewicht ebenfalls wesentlich schwerer als normale Wohnungstüren, deren Verfüllung durch Kartonwabenplatten oder perforierte Leichtfaserplatten gebildet werden. Durch die erheblichen Gewichtsdifferenzen können Brandschutztüren in den meisten Fällen nicht in die vorhandenen Türzargen eingehängt werden, was natürlich deren Einsatz wesentlich verteuert.The situation is not much better with fire-retardant components made of wood or wood-based materials. Fire protection doors, for example, regardless of whether the door leaf consists of edge-compacted chipboard or a hardwood frame with a central web made of chipboard, are also significantly heavier in weight than normal apartment doors, the filling of which is formed by cardboard honeycomb panels or perforated light fiber panels. Due to the considerable weight differences, fire protection doors can in most cases not be hung in the existing door frames, which of course makes their use considerably more expensive.
In neuester Zeit wird zunehmend versucht über den Einsatz von Intumeszenzmaterialien (bekannt auch als DSB-dämmschichtbildende Materialien) das Gewicht von Brandschutzteilen zu reduzieren.In recent times, attempts have been made increasingly to reduce the weight of fire protection parts by using intumescent materials (also known as DSB insulating layer-forming materials).
In der britischen Patentschrift GB 23 580-A ist eine wabenförmige Konstruktion, in deren Zellen eine Feuerlöschflüssigkeit bzw. ein fließfähiges Feuerlöschmittel enthalten sind, beschrieben.British patent specification GB 23 580-A describes a honeycomb structure in the cells of which a fire extinguishing liquid or a flowable fire extinguishing agent is contained.
Das Prinzip der Aufteiling des Feuerschutzmittels in separate Zellen (Kammern) ist auch Gegenstand der OS-DE 31 25 577, wobei in diesem Fall die Kammern mit einer pulverförmigen Intumeszenzmasse gefüllt sind. Auch hier, wird wie oft bei Zellenkonstruktionen auf die bevorzugte Ausführung als Wabenplattenkonstruktion, insbesondere als Pappwabenplatte hingewiesen.The principle of dividing the fire protection agent into separate cells (chambers) is also the subject of OS-DE 31 25 577, in which case the chambers are filled with a powdery intumescent material. Here too, as is often the case with cell constructions, reference is made to the preferred embodiment as a honeycomb panel construction, in particular as a cardboard honeycomb panel.
Die Nachteile dieses Anmeldungsgegenstandes sind ähnlich gelagert wie bei der Verfüllung der Wabenkonstruktion mit flüssigen Feuerschutzmitteln. Auch mit pulvrigen Feuerschutzmitteln ist die Handhabung in der Praxis, z.B. bei dem Einbau in Brandschutzbauteilen sehr umständlich. Insbesondere bei Bauteilen, die dynamischen Belastungen ausgesetzt sind, kommt es zur Verdichtung des Feuerschutzpulvers an den Kammerböden, was die Aufschäumfähigkeit im Brandfall vermindert und die Schalldämmung verschlechtert.The disadvantages of this subject matter of the application are similar to that of filling the honeycomb structure with liquid fire protection agents. Handling with powdery fire retardants is also practical, e.g. very cumbersome when installing in fire protection components. Particularly in the case of components that are exposed to dynamic loads, the fire protection powder is compressed on the chamber floors, which reduces the foamability in the event of a fire and worsens the sound insulation.
Ferner ist aus der Offenlegungsschrift DE-30 11 453 ein flächiges Trägermaterial bekannt, dessen Brandschutzmassenbeschichtung im Brandfall eine die leeren Zellen des Trägermaterials verfüllende Dämmschicht bildet.Furthermore, from DE-30 11 453 a flat support material is known, the fire protection coating of which forms a layer of insulation filling the empty cells of the support material in the event of a fire.
Neben dem Einsatz von flüssigen, pulvrigen oder pastösen Intumeszenzmaterialien besteht auch die Möglichkeit, die Intumeszenzmasse auf ein Trägermaterial (z.B. Glasvlies) aufzukaschieren.In addition to the use of liquid, powdery or pasty intumescent materials, there is also the option of laminating the intumescent material onto a carrier material (e.g. glass fleece).
Bei den bisherigen Versuchen, das Gewicht von Brandschutzbauteilen durch die Verwendung von Intumeszenzmaterialien zu verringern, stellte man fest, daß alle Intumeszenzmaterialien bei vertikalem Einsatz unter Brandbelastung die Tendenz zum Absacken des entstehenden Thermoschaumes zeigen, wodurch der Brandwiderstand and den entblößten Stellen stark herabgesetzt wird. Infolgedessen kam es bei amtlichen Brandversuchen mehrfach zum vorzeitigen Durchbrand direkt unter der oberen Rahmenkonstruktion. Diese Tendenz ist besonders stark ausgeprägt bei hochwirksamen Intumeszenzprodukten mit einem Aufschäumfaktor von ≧ 20. Bei Intumeszenzprodukten mit einem Aufschäumfaktor von ≦ 10 (z.B. auf Basis von Natriumsilikat), kann man unter Umständen durch Einbau eines Armierungsnetzes diesem Phänomen begegnen.In previous attempts to reduce the weight of fire protection components through the use of intumescent materials, it was found that all intumescent materials show the tendency to sag the thermal foam produced when used vertically under fire, whereby the fire resistance at the exposed areas is greatly reduced. As a result, there were several premature burns directly under the upper frame construction in official fire tests. This tendency is particularly pronounced with highly effective intumescent products with a foaming factor of ≧ 20. With intumescent products with a foaming factor of ≦ 10 (e.g. based on sodium silicate), this phenomenon can be countered by installing a reinforcement network.
Bei den hochwirksamen Intumeszenzmaterialien dagegen, bedingt durch das große Volumen, kann der entstehende Thermoschaum, insbesondere in den äußeren Schichten nicht mehr wirksan durch das Drahtnetz gestützt werden.In the case of the highly effective intumescent materials, on the other hand, due to the large volume, the resulting thermal foam, especially in the outer layers, can no longer be effectively supported by the wire mesh.
Gerade aber durch die Verwendung von hochaufschäumenden Intumeszenzmaterialien bieten sich aber besonders gute Möglichkeiten zur Verringerung des Gewichtes von Brandschutzbauteilen.However, the use of high-foaming intumescent materials offers particularly good opportunities for reducing the weight of fire protection components.
Ausgehend von den festgestellten Nachteilen bei den bisherigen Einsatzversuchen liegt der Erfindung die Aufgabe zugrunde, ein leichtes, mechanisch widerstandsfähiges Verbundelement mit brand- und schallschützenden Eigenschaften zu konstruieren.On the basis of the disadvantages identified in previous attempts at use, the object of the invention is to construct a light, mechanically resistant composite element with fire and sound-proofing properties.
Diese Aufgabe wurde erfindungsgemäß dadurch gelöst, daß eine oder mehrere Intumeszenz-Brandschutzbahnen mit einer ode mehreren Schallschutzbahnen beplant werden, und das ganze Bahnenpaket mit einer unbrennbaren Umhüllung umgeben wird.This object was achieved according to the invention in that one or more intumescent fire protection sheets are planned with one or more soundproofing sheets, and the entire sheet package is surrounded with an incombustible covering.
Die Brandwiderstandsdauer der unbrennbaren Umhüllung sollte so bemessen sein, daß sich der unter Hitzeeinwirkung bildende Thermoschaum voll entwickeln und stabilisieren kann, bevor es zum Durchbrand der Umhüllung kommt. Die Anzahl und Stärke der Intumeszenz-Brandschutzbahnen soll im Brandfall eine vollständige Verschäumung aller Holzräumen in der Kassette ermöglichen.The fire resistance duration of the incombustible covering should be such that the thermal foam forming under the influence of heat can develop and stabilize fully before the covering burns through. The number and thickness of the intumescent fire protection membranes should allow all wooden rooms in the cassette to be completely foamed in the event of a fire.
Die Funktionsweise der erfindungsgemäßen Kassette soll anhand der in Figur 1 und Figur 2 gezeigten Beispiele erläutert werden.The mode of operation of the cassette according to the invention will be explained using the examples shown in FIGS. 1 and 2.
Eine Schallschutzbahn aus 36 mm starken Pappwaben wurde beidseitig mit 2 mm starken Intumeszenz-Brandschutzbahnen 1, 1ʹ (Interdens VP 80 der Firma Dr. Wolman GmbH) beplankt und allseitig mit einem 0,5 mm starken Brandschutzvlies 3 (Interdens V der Firma Dr. Wolman GmbH) umwickelt.A soundproofing membrane made of 36 mm thick cardboard honeycomb was covered on both sides with 2mm thick intumescent fire protection membranes 1, 1ʹ (Interdens VP 80 from Dr. Wolman GmbH) and on all sides with a 0.5mm thick fire protection fleece 3 (Interdens V from Dr. Wolman GmbH) wrapped.
Diese Kassette mit den äußeren Maßen von 920 x 920 x 41 mm wurde mit einem 41 mm starken und 40 mm breiten Umleimer aus Eichenholz verankert.This cassette with the external dimensions of 920 x 920 x 41 mm was anchored with a 41 mm thick and 40 mm wide edge band made of oak.
Dieser Aufbau wurde beidseitig mit 4 mm starken furnierten Hartfaserplatten verleimt. Die so aufgebaute Modellwand mit den Abmessungen von 1000 x 1000 x 49 mm wurde im Brandraum beflammt, wobei der Temperaturanstieg nach der Einheits-Temperaturzeitkurve (abgkürzt ETK) erfolgte.This structure was glued on both sides with 4 mm thick veneered hardboard. The model wall constructed in this way with the dimensions of 1000 x 1000 x 49 mm was flamed in the fire room, the temperature rise taking place according to the unit temperature-time curve (abbreviated ETK).
Der Durchbrand erfolgte nach 87 Minuten im Randbereich (Eichenumleimer). Daraufhin wurden mit analogen Modellen punktuelle Durchbrandversuche mit einem starken Bunsenbrenner (Temperatur ca 1000°C) vorgenommen. Die Brandwiderstandsdauer betrug in diesem Fall 157 Minuten.The burn-through occurred after 87 minutes in the edge area (oak edging). Thereupon punctual burn-through tests were carried out with a strong Bunsen burner (temperature approx. 1000 ° C) with analog models. The fire resistance duration in this case was 157 minutes.
Eine Modellwand mit denselben Abmessungen des Beispiel 1 wurde nach dem in Figur 2 gezeigten Aufbau gefertigt. Eine mittelschichtig angeordnete 2 mm starke Intumeszenz-Brandschutzbahn 1 (Interdens VP 80 der Firma Dr. Wolman GmbH) wurde beidseitig mit 18,5 mm starken perforierten Schallschutzplatten aus Duroplast 2, 2ʹ beplankt und allseitig mit einer 1 mm starken Brandschutzdampfsperrbahn 3 (Interdens AL der Firma Dr. Wolman GmbH) ummantelt.A model wall with the same dimensions as in Example 1 was manufactured according to the structure shown in FIG. A 2 mm thick intumescent fire protection membrane 1 (Interdens VP 80 from Dr. Wolman GmbH) was layered on both sides with 18.5 mm thick perforated soundproofing panels made of Duroplast 2, 2ʹ and covered with 1 mm on all sides strong fire protection vapor barrier sheet 3 (Interdens AL from Dr. Wolman GmbH).
Die Beflammung der 1 x 1 großen Modellwand nach der ETK ergab hier eine Brandwiderstandsdauer von 78 Minuten und die punktuelle Beflammung mit dem Bunsenbrenner dauerte 141 Minuten bis zum Durchbrand.The flaming of the 1 x 1 large model wall according to the ETK resulted in a fire resistance of 78 minutes and the punctual flaming with the Bunsen burner took 141 minutes to burn through.
Damit ist der Weg vorgezeichnet, auch mit an sich brennbaren Materialien wie Holz, Holzwerkstoffen, Papier, Karton, Kunststoffe hohe Brandverzögerungseffekte mit leichten Bauteilen zu erreichen. Beispielhaft wird eine Brandschutztür auf Basis der erfindungsgemäßen Kassette ein Eigengewicht von unter 35 kg aufweisen, was deren Einsatz auch in normalen Türzargen erlaubt.This marks the way to achieve high fire retardation effects with lightweight components, even with combustible materials such as wood, wood-based materials, paper, cardboard, and plastics. For example, a fire door based on the cassette according to the invention will have a dead weight of less than 35 kg, which allows its use in normal door frames.
Die in der Zeichnung demonstrierten Ausführungsbeispiele sollen die in der Praxis möglichen Variationen erläutern, ohne jedoch den Anwendungsbereich einzuschränken.The exemplary embodiments shown in the drawing are intended to explain the variations possible in practice, but without restricting the scope.
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3622897 | 1986-07-08 | ||
DE19863622897 DE3622897A1 (en) | 1986-07-08 | 1986-07-08 | FIRE AND SOUND PROTECTION CASSETTE |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0254898A2 true EP0254898A2 (en) | 1988-02-03 |
Family
ID=6304641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19870109504 Withdrawn EP0254898A2 (en) | 1986-07-08 | 1987-07-02 | Fire and sound protection coffer |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0254898A2 (en) |
DE (1) | DE3622897A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8221527B1 (en) | 2006-03-08 | 2012-07-17 | Kilimanjaro Energy, Inc. | Air collector with functionalized ion exchange membrane for capturing ambient CO2 |
CN109083298A (en) * | 2018-08-24 | 2018-12-25 | 王小杰 | A kind of new structural noise reduction wall and its installation method |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4137241C2 (en) * | 1991-11-13 | 1996-05-30 | Eckhard A Ullrich | Thin-walled sound and fire protection element designed as a "sandwich element" |
DE102004049632B4 (en) * | 2004-10-11 | 2008-07-31 | Basf Se | Composite layer panel for fire doors |
DE102004059930B4 (en) * | 2004-12-13 | 2008-03-20 | Schneider, Frank, Dipl.-Ing. (FH) | Louvre window |
DE102005049788B4 (en) * | 2005-10-18 | 2010-05-20 | Karl Zimmermann Gmbh | Intumescent fire protection panel |
CN111877578B (en) * | 2020-08-11 | 2021-04-27 | 滕州潍达智能科技有限公司 | Environment-friendly sound-absorbing board for tailings |
-
1986
- 1986-07-08 DE DE19863622897 patent/DE3622897A1/en not_active Withdrawn
-
1987
- 1987-07-02 EP EP19870109504 patent/EP0254898A2/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8221527B1 (en) | 2006-03-08 | 2012-07-17 | Kilimanjaro Energy, Inc. | Air collector with functionalized ion exchange membrane for capturing ambient CO2 |
CN109083298A (en) * | 2018-08-24 | 2018-12-25 | 王小杰 | A kind of new structural noise reduction wall and its installation method |
Also Published As
Publication number | Publication date |
---|---|
DE3622897A1 (en) | 1988-01-21 |
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