EP2053176B1 - Structural panel with shielding effect - Google Patents

Structural panel with shielding effect Download PDF

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Publication number
EP2053176B1
EP2053176B1 EP08167359.2A EP08167359A EP2053176B1 EP 2053176 B1 EP2053176 B1 EP 2053176B1 EP 08167359 A EP08167359 A EP 08167359A EP 2053176 B1 EP2053176 B1 EP 2053176B1
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Prior art keywords
construction panel
metal foil
panel according
gypsum
construction
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German (de)
French (fr)
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EP2053176A1 (en
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Gosbert Grebner
Jürgen MARTIN
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Knauf Gips KG
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Knauf Gips KG
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Priority claimed from EP07120428A external-priority patent/EP2058451A1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/043—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of plaster

Definitions

  • the present invention relates to a building board based on gypsum and process for their preparation.
  • plastic films as vapor barriers to distinguish between an interior space and an exterior wall.
  • a wooden outer wall is first provided with an insulating material and then sealed with a plastic film - for example, based on polyethylene - as a vapor barrier.
  • a plastic film - for example, based on polyethylene - as a vapor barrier.
  • the roof tiles also in the attic area, it is customary to provide below the roof covering - for example, the roof tiles - an insulating material that is provided with a plastic film as a vapor barrier, before then, for example, plasterboard walls are mounted.
  • Construction boards based on gypsum are widely used in the interior construction of buildings to cover walls or ceilings.
  • the object of the present invention is to provide building materials with which the operation can be simplified.
  • the object is achieved by a building board based on gypsum, wherein at least one of the surfaces is covered with a metal foil and the metal foil is perforated, wherein the plate preferably has an SD value of 0.3 to 5 m, preferably 0.7 to 4.5 m.
  • At least one of the surfaces is covered with a metal foil.
  • the building board in this area is highly vapor-barrier.
  • the water vapor permeability can be adjusted so that the function of a vapor barrier can be obtained.
  • “Surface” in this context means in a gypsum board one of the two major major surfaces of a building board, but not the circumferential narrow side edges.
  • Construction board based on gypsum means a building board whose main component is set gypsum.
  • the building board may be a gypsum board, as known to those skilled in the art.
  • it may also be a plate having a gypsum core with a one- or two-sided sheathing with a nonwoven.
  • Such panels usually have a higher fire resistance than plasterboard panels.
  • a building board based on gypsum can also be a gypsum fiberboard, which thus has no cover by cardboard or fleece, but contains fibers, for example cellulose fibers, in the gypsum matrix.
  • US 1,914,345 describes a gypsum board provided with a metal foil to improve the insulating effect and to improve the heat resistance in case of fire.
  • perforations of the metal foil are provided to allow leakage of excess water during manufacture. The exact dimensioning of the water vapor permeability is not relevant for the water vapor leakage in the production.
  • DE 201 02 074 U1 describes an acoustic panel in which the rear side is provided with a closed or perforated plastic or aluminum foil in order to avoid a flow of air in the region of the holes of the plasterboard and thus to reduce the settling of dirt in the hole area.
  • the thickness of the metal foil can be selected by the person skilled in the art depending on the requirements of the stability, etc. Typical metal foil thicknesses are in the range of 5 to 40 ⁇ m.
  • the metal foil may be provided on one or both sides with a paper, for example a kraft paper. This embodiment facilitates the attachment of the metal foil on the building board.
  • the perforation is a micro-perforation, ie the openings are particularly small.
  • the openings may in principle be round, oval or angular, round perforations being particularly easy to produce.
  • Typical sizes for the opening are in the range of 50 to 1,400 microns in diameter, corresponding to about 1960 microns 2 to 1.54 mm 2 area.
  • the permeability of a product can be measured by the SD value.
  • the SD value means the water vapor diffusion-equivalent air layer thickness and is measured according to DIN 4108 or DIN EN ISO 12572. It results from the thickness and the diffusion resistance of the component. Building materials with an SD value ⁇ 0.5 m are open to diffusion.
  • a typical gypsum board has an SD value of 0.1 m
  • a polyethylene film with a thickness of 0.1 mm has an SD value of about 10 m.
  • an SD value in the range of about 0.3 to 5 m or 0.7 to 4.5 m can be achieved by the plate according to the invention, with values in the range of 2 to 3 m being particularly preferred for use as a vapor barrier.
  • the small fluctuation range of the SD values is surprising.
  • the plate according to the invention is not an acoustic perforated plate.
  • pre-perforated metal foil instead, with a pre-perforated metal foil basically causing problems with the adhesive, since this adhesive also acts as a barrier.
  • a pre-perforated metal foil basically causing problems with the adhesive, since this adhesive also acts as a barrier.
  • the plate according to the invention has another effect: By the metal coating a strong attenuation in the frequency range of 500 to 3,000 MHz is achieved, so that, for example, mobile phone radiation can be kept out of the exterior of the building.
  • the specimens were each left to constant mass in the conditioning climate.
  • the mass constancy is considered to be reached if the weight difference between the measurements does not exceed 5% within three days.
  • the first test batch was produced as Rundprüf analyses with a diffusion test area of 0.005 m 2 .
  • Glass containers were used as test vessels.
  • the seal was carried out in accordance with the standard by means of a mixture of low molecular weight polyisobutylene and microcrystalline wax. These included all perforated samples.
  • This method is chosen to provide quick and inexpensive information for attenuating a material.
  • Type Schwarzbeck AK 9513 with 10 m length
  • the attenuation was about 36, 37 and 34 dB, which corresponds to an attenuation of about 99.98%; this is approximately the measurement limit of the system, i. the effective values could be a bit higher.

Description

Die vorliegende Erfindung betrifft eine Bauplatte auf Basis von Gips und Verfahren zu ihrer Herstellung.The present invention relates to a building board based on gypsum and process for their preparation.

In vielen Baubereichen ist es üblich, zur Abgrenzung zwischen einem Innenraum und einer Außenwand Kunststofffolien als Dampfbremsen einzusetzen. Hierbei wird beispielsweise eine Holzaußenwand zunächst mit einem Dämmmaterial versehen und anschließend mit einer Kunststofffolie - beispielsweise auf Polyethylenbasis - als Dampfbremse abgedichtet. Hieran schließt sich dann der eigentliche Wandaufbau, beispielsweise mit Gipskartonplatten an.In many construction sectors, it is customary to use plastic films as vapor barriers to distinguish between an interior space and an exterior wall. Here, for example, a wooden outer wall is first provided with an insulating material and then sealed with a plastic film - for example, based on polyethylene - as a vapor barrier. This is followed by the actual wall construction, for example, with plasterboard.

Auch im Dachgeschossbereich ist es üblich, unterhalb der Dachabdeckung - beispielsweise der Dachpfannen - ein Dämmmaterial vorzusehen, dass mit einer Kunststofffolie als Dampfbremse versehen wird, bevor anschließend beispielsweise Gipskartonwände montiert werden.Also in the attic area, it is customary to provide below the roof covering - for example, the roof tiles - an insulating material that is provided with a plastic film as a vapor barrier, before then, for example, plasterboard walls are mounted.

Bauplatten auf Basis von Gips werden im Innenausbau von Gebäuden, zur Abdeckung von Wänden oder Decken vielfältig eingesetzt.Construction boards based on gypsum are widely used in the interior construction of buildings to cover walls or ceilings.

Es besteht grundsätzlich immer ein Bedarf nach Baulösungen, die dauerhafter sind und manuelle Überarbeitungsschritte einsparen.There is always a need for construction solutions that are more durable and save manual reworking steps.

Die vorliegende Erfindung hat sich die Aufgabe gestellt, Baumaterialien bereitzustellen, mit denen die Arbeitsweise vereinfacht werden kann.The object of the present invention is to provide building materials with which the operation can be simplified.

Überraschenderweise wird die Aufgabe gelöst durch eine Bauplatte auf Basis von Gips, wobei mindestens eine der Oberflächen mit einer Metallfolie abgedeckt ist und die Metallfolie perforiert ist, wobei die Platte bevorzugt einen SD-Wert von 0,3 bis 5 m, bevorzugt 0,7 bis 4,5 m aufweist.Surprisingly, the object is achieved by a building board based on gypsum, wherein at least one of the surfaces is covered with a metal foil and the metal foil is perforated, wherein the plate preferably has an SD value of 0.3 to 5 m, preferably 0.7 to 4.5 m.

Erfindungsgemäß ist mindestens eine der Oberflächen mit einer Metallfolie abgedeckt. Dies führt dazu, dass die Bauplatte in diesem Bereich stark dampfsperrend ist. Durch Perforation der Folie kann die Wasserdampfdurchlässigkeit so eingestellt werden, dass die Funktion einer Dampfbremse erhalten werden.According to the invention, at least one of the surfaces is covered with a metal foil. As a result, the building board in this area is highly vapor-barrier. By perforating the film, the water vapor permeability can be adjusted so that the function of a vapor barrier can be obtained.

"Oberfläche" bedeutet in diesem Zusammenhang bei einer Gipsplatte eine der beiden großen Hauptflächen einer Bauplatte, nicht jedoch die umlaufenden schmalen Seitenkanten."Surface" in this context means in a gypsum board one of the two major major surfaces of a building board, but not the circumferential narrow side edges.

"Bauplatte auf Basis von Gips" bedeutet eine Bauplatte, deren Hauptbestandteil abgebundener Gips ist."Construction board based on gypsum" means a building board whose main component is set gypsum.

In einer Ausführungsform kann die Bauplatte eine Gipskartonplatte sein, wie sie dem Fachmann bekannt ist.In one embodiment, the building board may be a gypsum board, as known to those skilled in the art.

In einer anderen Ausführungsform kann es sich auch um eine Platte handeln, die einen Gipskern mit einer ein- oder beidseitigen Ummantelung mit einem Vlies aufweist. Solche Platten weisen gegenüber Gipskartonplatten üblicherweise eine höhere Feuerbeständigkeit auf. Eine Bauplatte auf Basis von Gips kann auch eine Gipsfaserplatte sein, die also keine Abdeckung durch Karton oder Vlies aufweist, sondern Fasern, beispielsweise Zellulosefasern, in der Gipsmatrix enthält.In another embodiment, it may also be a plate having a gypsum core with a one- or two-sided sheathing with a nonwoven. Such panels usually have a higher fire resistance than plasterboard panels. A building board based on gypsum can also be a gypsum fiberboard, which thus has no cover by cardboard or fleece, but contains fibers, for example cellulose fibers, in the gypsum matrix.

US 1,914,345 beschreibt eine Gipskartonplatte, die mit einer Metallfolie versehen ist, um die Isolationswirkung zu verbessern und die Hitzebeständigkeit im Falle eines Brandes zu verbessern. In einer Ausführungsform werden Perforationen der Metallfolie vorgesehen, um bei der Herstellung den Austritt des überschüssigen Wassers zu ermöglichen. Die genaue Bemessung der Wasserdampfdurchlässigkeit ist für den Wasserdampfaustritt bei der Herstellung nicht relevant. US 1,914,345 describes a gypsum board provided with a metal foil to improve the insulating effect and to improve the heat resistance in case of fire. In one embodiment, perforations of the metal foil are provided to allow leakage of excess water during manufacture. The exact dimensioning of the water vapor permeability is not relevant for the water vapor leakage in the production.

DE 201 02 074 U1 beschreibt eine Akustikplatte, bei der die Rückseite mit einer geschlossenen oder perforierten Kunststoff- oder Alufolie versehen ist, um einen Luftstrom im Bereich der Löcher der Gipsplatte zu vermeiden und damit das Absetzen von Schmutz im Lochbereich zu verringern. DE 201 02 074 U1 describes an acoustic panel in which the rear side is provided with a closed or perforated plastic or aluminum foil in order to avoid a flow of air in the region of the holes of the plasterboard and thus to reduce the settling of dirt in the hole area.

Eine gezielte Nutzung der Wasserdampfdurchlässigkeit im eingebauten Zustand ist nicht bekannt.A targeted use of water vapor permeability in the installed state is not known.

Die Dicke der Metallfolie kann der Fachmann in Abhängigkeit von den Anforderungen an die Stabilität, etc. auswählen. Typische Metallfoliendicken liegen im Bereich von 5 bis 40 µm.The thickness of the metal foil can be selected by the person skilled in the art depending on the requirements of the stability, etc. Typical metal foil thicknesses are in the range of 5 to 40 μm.

Neben einer reinen Metallfolie kann auch ein Laminat zwischen einer Metallfolie und einem Papier eingesetzt werden; dabei kann die Metallfolie ein- oder beidseitig mit einem Papier, beispielweise einem Kraftpapier versehen sein. Diese Ausführungsform erleichtert die Befestigung der Metallfolie auf der Bauplatte.In addition to a pure metal foil and a laminate between a metal foil and a paper can be used; In this case, the metal foil may be provided on one or both sides with a paper, for example a kraft paper. This embodiment facilitates the attachment of the metal foil on the building board.

In einer besonders bevorzugten Ausführungsform ist die Perforation eine Mikroperforation, d.h. die Öffnungen sind besonders klein. Die Öffnungen können prinzipiell rund, oval oder eckig sein, wobei runde Perforationen besonders einfach herzustellen sind. Typische Größen für die Öffnung liegen im Bereich von 50 bis 1.400 µm im Durchmesser, entsprechend etwa 1960 µm2 bis 1,54 mm2 Fläche.In a particularly preferred embodiment, the perforation is a micro-perforation, ie the openings are particularly small. The openings may in principle be round, oval or angular, round perforations being particularly easy to produce. Typical sizes for the opening are in the range of 50 to 1,400 microns in diameter, corresponding to about 1960 microns 2 to 1.54 mm 2 area.

Erstaunlicherweise werden in Abhängigkeit von der Größe der Löcher nur sehr wenige Löcher benötigt, um die gewünschten Eigenschaften zu erzielen. Pro m2 Oberfläche haben sich 100 bis 10.000 Löcher als vorteilhaft erwiesen, wobei bevorzugt die Anzahl der Löcher pro m2 < 1.000 sein sollte.Surprisingly, depending on the size of the holes, very few holes are needed to achieve the desired properties. Per m 2 surface, 100 to 10,000 holes have proven to be advantageous, with preferably the number of holes per m 2 <1.000 should be.

Die Durchlässigkeit eines Produktes kann anhand des SD-Wertes gemessen werden. Der SD-Wert bedeutet ist die wasserdampfdiffusionsäquivalente Luftschichtdicke und wird nach DIN 4108 bzw. DIN EN ISO 12572 gemessen. Sie ergibt sich aus der Dicke und dem Diffusionswiderstand des Bauteils. Diffusionsoffen sind Baustoffe mit einem SD-Wert < 0,5 m. Eine typische Gipskartonplatte hat einen SD-Wert von 0,1 m, eine Polyethylenfolie mit einer Dicke von 0,1 mm hat einen SD-Wert von etwa 10 m.The permeability of a product can be measured by the SD value. The SD value means the water vapor diffusion-equivalent air layer thickness and is measured according to DIN 4108 or DIN EN ISO 12572. It results from the thickness and the diffusion resistance of the component. Building materials with an SD value <0.5 m are open to diffusion. A typical gypsum board has an SD value of 0.1 m, a polyethylene film with a thickness of 0.1 mm has an SD value of about 10 m.

Beispielsweise kann durch die erfindungsgemäße Platte ein SD-Wert im Bereich von etwa 0,3 bis 5 m oder 0,7 bis 4,5 m erreicht werden, wobei für die Anwendung als Dampfbremse Werte im Bereich von 2 bis 3 m besonders bevorzugt sind. Insbesondere überrascht die geringe Schwankungsbreite der SD-Werte.For example, an SD value in the range of about 0.3 to 5 m or 0.7 to 4.5 m can be achieved by the plate according to the invention, with values in the range of 2 to 3 m being particularly preferred for use as a vapor barrier. In particular, the small fluctuation range of the SD values is surprising.

Bevorzugt ist die erfindungsgemäße Platte keine Akustiklochplatte.Preferably, the plate according to the invention is not an acoustic perforated plate.

Die erfindungsgemäße Bauplatte kann hergestellt werden durch ein Verfahren mit folgenden Schritten:

  • Bereitstellen einer Bauplatte auf Basis von Gips
  • Aufbringen eines Klebstoffes auf mindestens eine Oberfläche der Bauplatte
  • Aufbringen einer Metallfolie auf den Klebstoff
  • Perforieren der Metallfolie.
The building board according to the invention can be produced by a method comprising the following steps:
  • Provision of a building board based on gypsum
  • Applying an adhesive to at least one surface of the building board
  • Applying a metal foil to the adhesive
  • Perforating the metal foil.

Es ist grundsätzlich auch möglich, stattdessen eine vorperforierte Metallfolie einzusetzen, wobei bei einer vorperforierten Metallfolie grundsätzlich Probleme mit dem Klebstoff entstehen könnten, da dieser Klebstoff ebenfalls als Sperre wirkt. Zumindest in der Ausführungsform, bei der nur eine Oberfläche abgedeckt ist, wäre es auch möglich, zunächst den Karton mit der Metallfolie zu beschichten (wobei die Metallfolie perforiert oder nicht perforiert sein könnte) und erst anschließend aus dem Karton eine Gipskartonplatte zu formen. Die eine diffusionsoffene Seite würde grundsätzlich genügen, um eine Trocknung der Platte zu ermöglichen.In principle, it is also possible to use a pre-perforated metal foil instead, with a pre-perforated metal foil basically causing problems with the adhesive, since this adhesive also acts as a barrier. At least in the embodiment where only one surface is covered, it would also be possible to first coat the carton with the metal foil (whereby the metal foil could be perforated or not perforated) and then form a plasterboard from the carton. The one diffusion-open side would basically be sufficient to allow drying of the plate.

Überraschenderweise zeigt sich bei der erfindungsgemäßen Platte noch ein weiterer Effekt:
Durch die Metallbeschichtung wird eine starke Dämpfung im Frequenzbereich von 500 bis 3.000 MHz erreicht, so dass beispielsweise Mobilfunkstrahlung aus dem Äußeren des Gebäudes ferngehalten werden kann.Surprisingly, the plate according to the invention has another effect:
By the metal coating a strong attenuation in the frequency range of 500 to 3,000 MHz is achieved, so that, for example, mobile phone radiation can be kept out of the exterior of the building.

In einer besonders bevorzugten Ausführungsform lässt sich eine solche Platte auch mit elektrisch leitfähigem Karton herstellen, wie er beispielsweise in der EP 1 118 085 B1 beschrieben ist.

  • Figur 1 zeigt schematisch den Ablauf des Verfahrens, bei dem ein Plattenstapel 1 auf einen Hubtisch 2 entstapelt wird und mittels Walzen 3 und 4 ein Leimauftrag erfolgt. Von einer Metallfolienvorratsrolle 6 wird mittels der Walzen 7 und 8 die perforierte Metallfolie auflaminiert und die beschichtete Platte wird auf den Produktionsstapel 9 auf dem Hubtisch 10 abgelegt.
  • Figur 2 zeigt eine alternative Ausführungsform, wobei von einem Plattenstapel 1 auf einem Hubtisch 2 eine Platte entstapelt wird und mittels der Walzen 3 und 4 ein Leimauftrag erfolgt. Von der Vorratsrolle 6 wird mit Hilfe der Walzen 7 und 8 die Metallfolie aufgebracht und anschließend mittels der Stachelwalze 20 mit Löchern versehen und auf den Produktionsstapel 9 auf dem Hubtisch 10 wieder abgelegt werden.
  • Figur 3 zeigt die Dämpfungseigenschaften der nach dem Verfahren gemäß Figur 1 bzw. Figur 2 hergestellten Platten.
  • Figur 4 zeigt den Messaufbau zur Bestimmung der Dämpfungseigenschaften der Platten. Bei der Prüfung wird eine Blechtafel mit den Abmessungen 120 x 120 cm und einer mittigen Öffnung von 40 x 40 cm oder 28 x 19 cm (hoch x quer) verwendet. Vor dieser Öffnung wird das zu prüfende Muster befestigt. In einem definierten Abstand werden die Sende- und Empfangsantenne jeweils davor und dahinter aufgestellt.
  • Figuren 5a bis 5f zeigen die Ergebnisse der Versuche zur Wasserdampfdurchlässigkeit gemäß den Beispielen.
In a particularly preferred embodiment, such a plate can be produced with electrically conductive cardboard, as it is for example in the EP 1 118 085 B1 is described.
  • FIG. 1 schematically shows the flow of the process in which a stack of plates 1 is unstacked on a lifting table 2 and by means of rollers 3 and 4, a glue application. From a metal foil supply roll 6, the perforated metal foil is laminated by means of the rollers 7 and 8 and the coated plate is placed on the production stack 9 on the lifting table 10.
  • FIG. 2 shows an alternative embodiment, wherein from a plate stack 1 on a lifting table 2, a plate is unstacked and by means of the rollers 3 and 4, a glue application. From the supply roll 6, the metal foil is applied by means of the rollers 7 and 8 and then provided by means of the spiked roller 20 with holes and placed on the production stack 9 on the lifting table 10 again.
  • FIG. 3 shows the damping properties of the according to the method according to FIG. 1 respectively. FIG. 2 produced plates.
  • FIG. 4 shows the measurement setup for determining the damping properties of the plates. The test uses a sheet metal measuring 120 x 120 cm and a central opening of 40 x 40 cm or 28 x 19 cm (high x transverse). Before this opening, the sample to be tested is attached. At a defined distance, the transmit and receive antennas are placed in front of and behind each.
  • FIGS. 5a to 5f show the results of the tests for water vapor permeability according to the examples.

Die Erfindung wird durch die folgenden Beispiele näher erläutert:The invention is further illustrated by the following examples:

Testgerät und TestbedingungenTest device and test conditions

  • Klimaprüfschrank Binder MKF 720Climate test cabinet Binder MKF 720
  • Präzisionswaage SatoriusPrecision balance Satorius
  • Konditionierungsbedingungen: 23°C/ 50% r.F.Conditioning conditions: 23 ° C / 50% r.F.
  • Prüfbedingungen: 23°C / 50/93% rel. Luftfeuchte (Wet-Cup)
    23°C / 0/50% rel. Luftfeuchte (Dry-Cup)    Test conditions: 23 ° C / 50/93% rel. Humidity (wet cup)
    23 ° C / 0/50% rel. Humidity (dry cup)
Prüfkörperspecimen

Die Probekörper wurden jeweils bis zur Massenkonstanz im Konditionierungsklima belassen. Die Massenkonstanz gilt als erreicht, wenn innerhalb von drei Tagen die Gewichtsdifferenz zwischen den Messungen 5% nicht überschreitet.The specimens were each left to constant mass in the conditioning climate. The mass constancy is considered to be reached if the weight difference between the measurements does not exceed 5% within three days.

Probenherstellungsample preparation

Die erste Prüfcharge wurde als Rundprüfkörper mit einer Diffusionsprüffläche von 0,005 m2 hergestellt. Als Prüfgefäße wurden Glasschalen verwendet. Die Abdichtung erfolgte normkonform mittels einer Mischung aus niedermolekularem Polyisobutylen und mikrokristallinem Wachs. Hierzu gehörten alle perforierten Proben.The first test batch was produced as Rundprüfkörper with a diffusion test area of 0.005 m 2 . Glass containers were used as test vessels. The seal was carried out in accordance with the standard by means of a mixture of low molecular weight polyisobutylene and microcrystalline wax. These included all perforated samples.

Bei der zweiten Charge wurden Prüfkörper der Muster 40/40 GK mit einer Diffusionsprüffläche von 0,02 m2 für den Wet-Cup Versuch hergestellt. Als Prüfschalen dienten Kunststoffgefäße. Da bei dieser Variante Diffusionsströme durch die Schalen selbst hätte stattfinden können, wurden diese und auch die Abdichtung hinsichtlich Leckageströme mittels einer Referenzprobe überwacht. Die hierbei aufgetretene Gewichtsveränderung wurde bei den Messungen der Prüfkörper berücksichtigt.For the second batch samples of samples 40/40 GK with a diffusion test area of 0.02 m 2 were prepared for the wet-cup test. The test dishes were plastic containers. Since in this variant diffusion currents could have taken place through the shells themselves, these and also the seal with respect to leakage flows were monitored by means of a reference sample. The weight change which occurred here was taken into account in the measurements of the test specimens.

ErgebnisseResults

Für Baustoffe und Bauteile, deren Umgebungsfeuchten meist unter 70% r.F. liegen, gelten für die Planung die Ergebnisse der Dry-Cup-Versuche. Bei beheizten Gebäuden werden somit den Bauteilen auf den raumzugewandten Seiten vor einer Dämmschicht die Werte aus dem Dry-Cup-Versuch mit dem Partialdruckgefälle 0 zu 50% r.F. zugeordnet. Probe 1: 8x8 wet cup (23°C - 50/93% rel. LF) Materialname: gelochte alukaschierte GK-Platte Kurzbezeichnung: GK8/8 Materialtyp: Gipskarton Aufbau: gelochte alukaschierte - Raster 8x8 mm Anzahl der Prüfkörper: 5 Probennummern: 6-10 Schalennummern: 21-25 Klimatisierung der Proben vor Versuch: gemäß Norm - 23°C 50% r.F. For building materials and components whose ambient humidity is usually below 70% RH, the results of the Dry Cup tests apply to the planning. In heated buildings, the components on the sides facing the room in front of an insulating layer are thus assigned the values from the Dry Cup test with the partial pressure gradient 0 to 50% RH. Sample 1 : 8x8 wet cup (23 ° C - 50/93% RH LF) Material Name: perforated alukaschierte GK plate Brief description: GK8 / 8 Material type: plasterboard Construction: perforated alukaschierte - grid 8x8 mm Number of specimens: 5 Sample numbers: 6-10 Tray numbers: 21-25 Air conditioning of the samples before the experiment: according to standard - 23 ° C 50% rh

Die Ergebnisse sind in Figur 5a dargestellt. Durchschnittswert niedrigster Einzelwert Standardabweichung Mittlere Dicke der Probekörper (mm) 12,6 - - Wasserdampfdiffusionsstromdichte (g/m2d) 63,52 52,29 9,82 Wasserdampfdiffusionsäquivalente (m) 0,31 0,26 0,05 Luftsch ichtdicke Sd-wert Wasserdampfdiffusionswiderstandzahl µ-wert [-] 24,70 20,99 4,22 Probe 2: 20x20 wet cup (23°C - 50/93% rel. LF) Materialname: gelochte alukaschierte GK-Platte Kurzbezeichnung: GK20/20 Materialtyp: Gipskarton Aufbau: gelochte alukaschierte - Raster 20x20 mm Anzahl der Prüfkörper: 5 Probennummern: 1-5 Schalennummern: 16-20 Klimatisierung der Probenvor Versuch: gemäß Norm - 23°C 50% r.F. The results are in FIG. 5a shown. average value lowest single value standard deviation Average thickness of the specimens (mm) 12.6 - - Water vapor diffusion current density (g / m 2 d) 63.52 52.29 9.82 Water vapor diffusion equivalents (m) 0.31 0.26 0.05 Air layer thickness Sd-value Water vapor diffusion resistance factor μ-value [-] 24,70 20.99 4.22 Sample 2 : 20x20 wet cup (23 ° C - 50/93% RH LF) Material Name: perforated alukaschierte GK plate Brief description: GK20 / 20 Material type: plasterboard Construction: perforated aluminum-laminated - grid 20x20 mm Number of specimens: 5 Sample numbers: 1-5 Tray numbers: 16-20 Air conditioning of the samples before experiment: according to standard - 23 ° C 50% rh

Die Ergebnisse sind in Figur 5b dargestellt. Durchschnittswert niedrigster Einzelwert Standardabweichung Mittlere Dicke der Probekörper (mm) 0,013 - - Wasserdampfdiffusionsstromdichte g/m2d) 6,44 52,29 2,12 Wasserdampfdiffusionsäquivalente (m) 2,29 1,66 0,56 Luftsch ichtdicke Sd-wert Wasserdampfdiffusionswiderstandzahl µ-wert[-] 182,64 132,43 44,49 Probe 3: 40x40 wet cup (23°C - 50/93% rel. LF) Materialname: gelochte alukaschierte GK-Platte Kurzbezeichnung: GK40/40 Materialtyp: Gipskarton Aufbau: gelochte alukaschierte - Raster 40x40 mm Anzahl der Prüfkörper: 5 Probennummern: 11-15 Schalennummern: 26-30 Klimatisierung der Proben vor Versuch: gemäß Norm - 23°C 50% r.F. The results are in FIG. 5b shown. average value lowest single value standard deviation Average thickness of the specimens (mm) 0,013 - - Water vapor diffusion current density g / m 2 d) 6.44 52.29 2.12 Water vapor diffusion equivalents (m) 2.29 1.66 0.56 Air layer thickness Sd-value Water vapor diffusion resistance factor μ-value [-] 182.64 132.43 44.49 Sample 3 : 40x40 wet cup (23 ° C - 50/93% rel. Material Name: perforated alukaschierte GK plate Brief description: GK40 / 40 Material type: plasterboard Construction: perforated aluminum-laminated - grid 40x40 mm Number of specimens: 5 Sample numbers: 11-15 Tray numbers: 26-30 Air conditioning of the samples before the experiment: according to standard - 23 ° C 50% rh

Die Ergebnisse sind in Figur 5c dargestellt. Durchschnittswert niedrigster Einzelwert Standardabweichung Mittlere Dicke der Probekörper (mm) 12,6 - - Wasserdampfdiffusionsstromdichte (g/m2d) 5,20 5,14 1,48 Wasserdampfdiffusionsäquivalente (m) 3,89 3,79 0,08 Luftschichtdicke Sd-wert Wasserdampfdiffusionswiderstandzahl µ-wert [-] 308,66 301,86 6,59 Probe 4: 8x8 dry cup (23°C - 0/50% rel. LF) Materialname: gelochte alukaschierte GK-Platte Kurzbezeichnung: GK8/8 Materialtyp: Gipskarton Aufbau: gelochte alukaschierte - Raster 20x20 mm Anzahl der Prüfkörper: 5 Probennummern: 26-30 Schalennummern: 41-45 Klimatisierung der Proben vor Versuch: gemäß Norm - 23°C 50% r.F. The results are in FIG. 5c shown. average value lowest single value standard deviation Average thickness of the specimens (mm) 12.6 - - Water vapor diffusion current density (g / m 2 d) 5.20 5.14 1.48 Water vapor diffusion equivalents (m) 3.89 3.79 0.08 Air layer thickness Sd-value Water vapor diffusion resistance factor μ-value [-] 308.66 301.86 6.59 Sample 4: 8x8 dry cup (23 ° C - 0/50% RH LF) Material Name: perforated alukaschierte GK plate Brief description: GK8 / 8 Material type: plasterboard Construction: perforated aluminum-laminated - grid 20x20 mm Number of specimens: 5 Sample numbers: 26-30 Tray numbers: 41-45 Air conditioning of the samples before the experiment: according to standard - 23 ° C 50% rh

Die Ergebnisse sind in Figur 5d dargestellt. Durchschnittswert niedrigster Einzelwert Standardabweichung Mittlere Dicke der Probekörper (mm) 12,600 - - Wasserdampfdiffusionsstromdichte (g/m2d) 48,50 46,33 2,17 Wasserdampfdiffusionsäquivalente (m) 0,48 0,44 0,02 Luftsch ichtdicke Sd-wert Wasserdampfdiffusionswiderstandzahl µ-wert [-] 37,81 35,07 1,68 Probe 5: 20x20 dry cup (23°C - 0/50% rel. LF) Materialname: gelochte alukaschierte GK-Platte Kurzbezeichnung: GK20/20 Materialtyp: Gipskarton Aufbau: gelochte alukaschierte - Raster 20x20 mm Anzahl der Prüfkörper: 5 Probennummern: 21-25 Schalennummern: 36-40 Klimatisierung der Proben vor Versuch: gemäß Norm - 23°C 50% r.F. The results are in FIG. 5d shown. average value lowest single value standard deviation Average thickness of the specimens (mm) 12,600 - - Water vapor diffusion current density (g / m 2 d) 48,50 46,33 2.17 Water vapor diffusion equivalents (m) 0.48 0.44 0.02 Air layer thickness Sd-value Water vapor diffusion resistance factor μ-value [-] 37.81 35.07 1.68 Sample 5: 20x20 dry cup (23 ° C - 0/50% RH LF) Material Name: perforated alukaschierte GK plate Brief description: GK20 / 20 Material type: plasterboard Construction: perforated aluminum-laminated - grid 20x20 mm Number of specimens: 5 Sample numbers: 21-25 Tray numbers: 36-40 Air conditioning of the samples before the experiment: according to standard - 23 ° C 50% rh

Die Ergebnisse sind in Figur 5e dargestellt. Durchschnittswert niedrigster Einzelwert Standardabweichung Mittlere Dicke der Probekörper (mm) 12,600 - - Wasserdampfdiffusionsstromdichte (g/m2d) 14,80 13,57 0,77 Wasserdampfdiffusionsäquivalente (m) 1,60 1,51 0,09 Luftsch ichtdicke Sd-wert Wasserdampfdiffusionswiderstandzahl µ-wert [-] 126,76 119,69 6,93 Probe 6: 40x40 dry cup (23°C - 0/50% rel. LF) Materialname: gelochte alukaschierte GK-Platte Kurzbezeichnung: GK40/40 Materialtyp: Gipskarton Aufbau: gelochte alukaschierte - Raster 40x40 mm Anzahl der Prüfkörper: 5 Probennummern: 16-20 Schalennummern: 31-35 Klimatisierung der Proben vor Versuch: gemäß Norm - 23°C 50% r.F. The results are in FIG. 5e shown. average value lowest single value standard deviation Average thickness of the specimens (mm) 12,600 - - Water vapor diffusion current density (g / m 2 d) 14,80 13.57 0.77 Water vapor diffusion equivalents (m) 1.60 1.51 0.09 Air layer thickness Sd-value Water vapor diffusion resistance factor μ-value [-] 126.76 119.69 6.93 Sample 6 : 40x40 dry cup (23 ° C - 0/50% RH LF) Material Name: perforated alukaschierte GK plate Brief description: GK40 / 40 Material type: plasterboard Construction: perforated aluminum-laminated - grid 40x40 mm Number of specimens: 5 Sample numbers: 16-20 Tray numbers: 31-35 Air conditioning of the samples before the experiment: according to standard - 23 ° C 50% rh

Die Ergebnisse sind in Figur 5f dargestellt. Durchschnittswert niedrigster Einzelwert Standardabweichung Mittlere Dicke der Probekörper (mm) 12,600 - - Wasserdampfdiffusionsstromdichte (g/m2d) 12,04 6,73 4,15 Wasserdampfdiffusionsäquivalente (m) 2,20 1,47 0,89 Luftsch ichtdicke Sd-wert Wasserdampfdiffusionswiderstandzahl µ-wert [-] 174,73 116,42 70,60 The results are in FIG. 5f shown. average value lowest single value standard deviation Average thickness of the specimens (mm) 12,600 - - Water vapor diffusion current density (g / m 2 d) 12.04 6.73 4.15 Water vapor diffusion equivalents (m) 2.20 1.47 0.89 Air layer thickness Sd-value Water vapor diffusion resistance factor μ-value [-] 174.73 116.42 70.60

Dämpfungseigenschaftendamping properties Bestimmung der DämpfungseigenschaftenDetermination of damping properties

Dieses Verfahren wird gewählt, um schnell und preiswert eine orientierende Information zur Dämpfung eines Materials zu erhalten.This method is chosen to provide quick and inexpensive information for attenuating a material.

Folgende Geräte werden eingesetzt: Messgerät Advantest R3132 mit Trackinggenerator, Gerätenummer 101003435; letzte Kalibrierung: 04.01.2005 Leistung 1 mW = 0 dBm Messantennen Typ SCHWARZBECK USLP 9143 (300 MHz - 3 GHz), Seriennummer 198 und 242 Vertikal polarisierte Welle Abstand je 10 cm zwischen Antennenspitze und Prüfobjekt Antennenkabel Typ Schwarzbeck AK 9513 mit 10 m Länge. The following devices are used: gauge Advantest R3132 with tracking generator, Device number 101003435; last calibration: 04.01.2005 power 1 mW = 0 dBm test antennas Type SCHWARZBECK USLP 9143 (300 MHz - 3 GHz), serial numbers 198 and 242 Vertically polarized wave distance each 10 cm between antenna tip and test object antenna cable Type Schwarzbeck AK 9513 with 10 m length.

Die Ergebnisse sind in Figur 3 dargestellt.The results are in FIG. 3 shown.

Bei 900, 1900 und 3000 MHz betrug die Dämpfung etwa 36, 37 und 34 dB, was einer Dämpfung von ca. 99,98% entspricht; dies ist in etwa die Messgrenze des Systems, d.h. die effektiven Werte könnten noch etwas höher liegen.At 900, 1900 and 3000 MHz, the attenuation was about 36, 37 and 34 dB, which corresponds to an attenuation of about 99.98%; this is approximately the measurement limit of the system, i. the effective values could be a bit higher.

Claims (13)

  1. A gypsum-based construction panel, in which at least one of the main surfaces is covered by a metal foil, and said metal foil is perforated, characterized in that said construction panel has an SD value of from 0.7 to 4.5 m.
  2. The construction panel according to claim 1, characterized in that said metal foil is made of aluminum, zinc, tin, and alloys of these metals.
  3. The construction panel according to either of claims 1 or 2, characterized in that said metal foil has been applied to both main surfaces.
  4. The construction panel according to at least one of claims 1 to 3, characterized in that said gypsum-based construction panel is a gypsum plasterboard.
  5. The construction panel according to at least one of claims 1 to 4, characterized in that said panel has a gypsum core and a non-woven coating on one or both sides thereof.
  6. The construction panel according to at least one of claims 1 to 5, characterized in that the thickness of the metal foil is within a range of from 5 to 40 µm.
  7. The construction panel according to at least one of claims 1 to 6, characterized in that said metal foil has been provided with a paper layer on one or both sides of the panel.
  8. The construction panel according to at least one of claims 1 to 7, characterized in that said perforation is a microperforation.
  9. The construction panel according to at least one of claims 1 to 8, characterized in that said perforation is manifested by holes having sizes of from 50 to 1,400 micrometers.
  10. The construction panel according to at least one of claims 1 to 9, characterized in that from 100 to 10,000 holes are provided per 1 m2 of surface area.
  11. A process for preparing a construction panel according to at least one of claims 1 to 10, comprising the following steps:
    - providing a gypsum-based construction panel;
    - applying an adhesive to at least one main surface of the construction panel;
    - applying a metal foil to said adhesive;
    - perforating said metal foil.
  12. Use of a construction panel according to any of claims 1 to 10 as a vapor barrier or vapor retarder.
  13. Use of a construction panel according to any of claims 1 to 10 for radiation damping in a frequency range of from 500 to 3,000 MHz.
EP08167359.2A 2007-10-24 2008-10-23 Structural panel with shielding effect Active EP2053176B1 (en)

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DE102007050780 2007-10-24
EP07120428A EP2058451A1 (en) 2007-11-12 2007-11-12 Structural panel with screening effect
EP08167359.2A EP2053176B1 (en) 2007-10-24 2008-10-23 Structural panel with shielding effect

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EP2053176B1 true EP2053176B1 (en) 2019-11-27

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9251778B2 (en) 2014-06-06 2016-02-02 Industrial Technology Research Institute Metal foil with microcracks, method of manufacturing the same, and sound-absorbing structure having the same
CN113602817A (en) * 2021-08-14 2021-11-05 王继坪 Pressure plate coating layer double-sided automatic stacking assembly and stacking method

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Publication number Priority date Publication date Assignee Title
US1914345A (en) 1932-07-07 1933-06-13 United States Gypsum Co Wall construction
US2998337A (en) * 1957-06-07 1961-08-29 United States Gypsum Co Reflective-fibrous type insulation
US3097124A (en) * 1957-08-30 1963-07-09 Denenberg Maurice Insulating wall board and method of forming same
US6214454B1 (en) * 1996-09-25 2001-04-10 Nippon Paint Co., Ltd. Electromagnetic wave absorbing material
SE515941C2 (en) 1998-05-28 2001-10-29 Knauf Westdeutsche Gips An electrically conductive layer of cellulose fibers and a composite thereof
DE20102074U1 (en) 2001-02-07 2001-08-09 Nohlen Wolfgang Acoustic panel Scherff Rondo / Quadro
KR20020070766A (en) * 2001-03-02 2002-09-11 다이니폰 인사츠 가부시키가이샤 Electromagnetic wave-shielding construction material and method for producing the same
BRPI0408504A (en) * 2003-03-19 2006-03-07 United States Gypsum Co acoustic panel comprising seated plaster interlacing matrix and method for doing the same
US7645527B2 (en) * 2003-09-12 2010-01-12 Knauf Gips Kg Gypsum-based building material

Non-Patent Citations (1)

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Title
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