EP2058451A1 - Structural panel with screening effect - Google Patents
Structural panel with screening effect Download PDFInfo
- Publication number
- EP2058451A1 EP2058451A1 EP07120428A EP07120428A EP2058451A1 EP 2058451 A1 EP2058451 A1 EP 2058451A1 EP 07120428 A EP07120428 A EP 07120428A EP 07120428 A EP07120428 A EP 07120428A EP 2058451 A1 EP2058451 A1 EP 2058451A1
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- EP
- European Patent Office
- Prior art keywords
- metal foil
- building board
- gypsum
- board according
- perforated
- 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.)
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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.
- At least one of the surfaces is covered with a metal foil.
- the building board in this area is highly vapor-blocking is.
- 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.
- 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, with round perforations especially easy to make.
- 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 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.
- 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 cardboard with the metal foil (whereby the metal foil could be perforated or not perforated) and only then to form a plasterboard from the carton. The one diffusion-open side would basically be sufficient to allow drying of the plate.
- the plate according to the invention has another effect:
- 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.
- 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). That's going to happen before this opening attached to examining patterns.
- the transmit and receive antennas are placed in front of and behind each.
- This method is chosen to provide quick and inexpensive information for attenuating a material.
- FIG. 4 shows schematically the measurement setup.
- FIGS. 5a to 5f show the results of the Dry-Cup / Wet-Cup investigations.
- the invention is further illustrated by the following examples:
- 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.
Abstract
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.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.
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-blocking is. 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.
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, with round perforations especially easy to make. 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 erreicht werden, wobei für die Anwendung als Dampfbremse Werte im Bereich von 2 bis 3 m besonders bevorzugt sind.For example, an SD value in the range of about 0.3 to 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.
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.
- 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 cardboard with the metal foil (whereby the metal foil could be perforated or not perforated) and only then to 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:Surprisingly, the plate according to the invention has another effect:
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.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
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:
Gerätenummer 101003435;
letzte Kalibrierung: 04.01.2005
Seriennummer 198 und 242
Vertikal polarisierte Welle
Device number 101003435;
last calibration: 04.01.2005
Serial numbers 198 and 242
Vertically polarized wave
Klimaprüfschrank Binder MKF 720
23°C/ 0/50% rel. Luftfeuchte (Dry-Cup)
23 ° C / 0/50% rel. Humidity (dry cup)
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.
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
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.For building materials and components whose ambient humidity is usually below 70% r.F. The results of the Dry Cup trials apply to the planning. In heated buildings, the components on the sides facing the room in front of an insulating layer are therefore given the values from the Dry Cup test with the
Luftschichtdicke
Sd-wertWater vapor diffusion equivalents (m)
Air layer thickness
Sd-value
Luftschichtdicke
Sd-wertWater vapor diffusion equivalents (m)
Air layer thickness
Sd-value
Sd-wertWater vapor diffusion equivalents (m) Air layer thickness
Sd-value
Sd-wertWater vapor diffusion equivalents (m) Air layer thickness
Sd-value
Sd-wertWater vapor diffusion equivalents (m) Air layer thickness
Sd-value
Sd-wertWater vapor diffusion equivalents (m) Air layer thickness
Sd-value
Claims (11)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07120428A EP2058451A1 (en) | 2007-11-12 | 2007-11-12 | Structural panel with screening effect |
Publications (1)
Publication Number | Publication Date |
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EP2058451A1 true EP2058451A1 (en) | 2009-05-13 |
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ID=39283932
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EP07120428A Withdrawn EP2058451A1 (en) | 2007-10-24 | 2007-11-12 | Structural panel with screening effect |
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Citations (7)
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 |
DE20102074U1 (en) * | 2001-02-07 | 2001-08-09 | Nohlen Wolfgang | Acoustic panel Scherff Rondo / Quadro |
WO2004083146A2 (en) * | 2003-03-19 | 2004-09-30 | United States Gypsum Company | Acoustical panel comprising interlocking matrix of set gypsum and method for making same |
WO2005026465A2 (en) * | 2003-09-12 | 2005-03-24 | Knauf Gips Kg | Construction material based on gypsum |
-
2007
- 2007-11-12 EP EP07120428A patent/EP2058451A1/en not_active Withdrawn
Patent Citations (7)
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 |
DE20102074U1 (en) * | 2001-02-07 | 2001-08-09 | Nohlen Wolfgang | Acoustic panel Scherff Rondo / Quadro |
WO2004083146A2 (en) * | 2003-03-19 | 2004-09-30 | United States Gypsum Company | Acoustical panel comprising interlocking matrix of set gypsum and method for making same |
WO2005026465A2 (en) * | 2003-09-12 | 2005-03-24 | Knauf Gips Kg | Construction material based on gypsum |
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