EP1085141A2 - Eine auf ein Vlies aufgebrachte, einen Film aufweisende, wasserdampfdurchlässige Luftsperre - Google Patents
Eine auf ein Vlies aufgebrachte, einen Film aufweisende, wasserdampfdurchlässige Luftsperre Download PDFInfo
- Publication number
- EP1085141A2 EP1085141A2 EP00118939A EP00118939A EP1085141A2 EP 1085141 A2 EP1085141 A2 EP 1085141A2 EP 00118939 A EP00118939 A EP 00118939A EP 00118939 A EP00118939 A EP 00118939A EP 1085141 A2 EP1085141 A2 EP 1085141A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- fleece
- air
- water vapor
- thin
- 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.)
- Ceased
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D12/00—Non-structural supports for roofing materials, e.g. battens, boards
- E04D12/002—Sheets of flexible material, e.g. roofing tile underlay
Definitions
- the invention relates to an air-blocking, but water vapor permeable, thin-walled membrane to the inside Cladding an insulated roof, with one by one Non-woven thin film.
- Such air barriers are known in the prior art and are used in full rafter insulation.
- a full rafter insulation consists of a outside the roof, below the roof insulation on the Rafters installed, breathable roofing membrane.
- Below this roofing membrane are in voluminous thermal insulation elements in the spaces between the rafters.
- these insulation elements are covered by the well-known air barrier disguised by the as web goods provided air barrier with the rafters in known Way to be connected.
- the water vapor permeability the air barrier is less than the water vapor permeability the roofing membrane.
- the water vapor diffusion cutoff value (Sd value) of the roofing membrane is usually less than 0.3 m.
- the one, who Known air barrier is included depending on the application 2 - 3 m if the air barrier on a roof without formwork, and at about 10 - 12 m when the air barrier is on a roof with formwork is used.
- the different Sd values have the consequence that both the insulation dries outwards and also dehumidifies the interior is guaranteed.
- the invention has for its object the known Advantageously further training air lock.
- the claim 1 provides that the film on the Fleece melted and intimately bonded to it under pressure is that the water vapor permeability from the Film side is larger than from the fleece side.
- the air barrier can be used, for example attach in such a way that their water vapor diffusion barrier Effect in the direction of insulation greater is the other way around. This has the consequence that moist built-in rafters and formwork boards, in particular in the not yet occupied state of the building can dry out inside, but on the other hand into the Insulation with a corresponding humidity of the Little moisture occurs inside.
- the air barrier has a check valve in this use comparable effect.
- the design is that of water vapor permeability determining water vapor diffusion barrier value (Sd value) fleece side by at least a factor of 3, preferably about a factor of 5 larger than on the film side.
- the air barrier can be installed on the film side towards the interior if the roof has full rafter insulation without formwork.
- the fleece shows this way of laying towards the insulation. Is the roof with a formwork provided, there is a reverse laying of the air barrier to provide.
- the fleece side faces the room and the Insulation film page. Now the water vapor permeability less from the inside out.
- the fleece side Sd value is preferably 10-12 m. At this type of installation allows reverse diffusion, which is a factor of 3-5 larger than diffusion from the inside to the outside.
- the fleece which indicates insulation for this use, has a buffering effect. If the outside air humidity decreases, the moisture buffered there can be released into the outside air through the insulation and the breathable membrane.
- a variant of the invention provides an air barrier, the fleece-side Sd value of 2-3 m and the film-side Sd value of 0.5-0.6 m. Such a product is particularly suitable for stable roof constructions without chemical wood protection.
- the film preferably consists of an LDPE / EMA and has a thickness of 12 - 25 m ⁇ .
- a film thickness of 15-18 ⁇ m is preferred for such air barriers, the Sd values of which are 0.5-0.6 m in one direction and 2-3 m in the other direction.
- the film is applied to a preferably 80 g / m 2 PP spunbonded nonwoven.
- the composite product consists of a 25 m ⁇ thick LDPE film on an 80 g / m 2 PP fleece.
- the film can also have LDPE / EMA.
- the weight per unit area of the entire web is preferably 90-110 g and in particular 100 or 105 g / m 2 .
- Another variant of the air barrier according to the invention stipulates that the film-side Sd value between 0.2 and 0.5 m.
- the Sd value in the opposite direction, i.e. the fleece side, in this variant is 1 to 2.5 m.
- This variant is also suitable for extremely open to diffusion Steep roofs with full rafter insulation, where do not add chemical wood preservatives to the woods are.
- the invention further relates to a method of manufacture an air barrier with a vapor retardant property, where a melted polymer melted into the film applied to the fleece while still molten and both components under pressure and temperature be intimately connected.
- the intimate connection is made by calendering.
- the polymer is preferably extruded into the film.
- the invention further relates to the use of a one melted onto a fleece and under pressure associated air-blocking film and one different in the two directions large water vapor permeability web as inside cladding one on the outside with a vapor-permeable roof underlay provided, insulated Roof.
- the path will depend on the desired one Water vapor permeability either with their Fleece side or its film side facing insulation appropriate.
- the web with full rafters insulation on a formwork overlying roofing membrane with its film side Insulation shows and that the web with a formwork-free Full rafter insulation with its fleece side for insulation has.
- FIGS 2 to 5 which show the application examples clarify, are not to scale. In particular is the material thickness of air barrier 1 and diffusion film 6 reproduced significantly enlarged.
- the air lock is provided with the reference number 1 there. It has a fleece 2 made of polypropylene with a weight per unit area of 70-100 g / m 2, preferably 80 g / m 2 .
- This spunbonded fabric carries a thin film 3.
- the film has a thickness of 25 ⁇ m and consists of LDPE.
- the thickness of the film is 15 m ⁇ - 18 m ⁇ .
- the material there is LDPE / EMA.
- the two air locks described as examples are manufactured in-line and in-situ.
- the Polymer LDPE and LDPE / EMA are in an extruder melted. Via a wide slot nozzle (flat nozzle) the polymer is extruded into a film of 15 - 25 m ⁇ .
- the hot melt becomes direct, i.e. in the melted one Condition, applied to the polypropylene spunbond.
- Both components are covered with a calender Pressure and temperature intimately connected. The pressure or the temperature is set so that the desired various, direction-dependent diffusion properties for water vapor.
- the one in the application examples 2 and 3 related air locks have an Sd value from the fleece side to the film side from 10 - 12 m.
- the Sd value from the film side to the fleece side is 2 - 3 m.
- Air lock has lower, vapor barrier Characteristics.
- Sd value is from the fleece side to the film side 2 - 3 m and from the film side to Fleece side 0.5 - 0.6 m.
- Fig. 2 In the application example shown in Fig. 2 is the first embodiment of an air barrier (Sd value 2 - 3 m and 10 -12 m) on a formwork-free roof construction on the inside of the roof with the fleece side against the The insulation was tacked to the rafters 9. Outside the rafters 9 and the insulation 4 is one roofing membrane 6, which is open to diffusion and has an Sd value of 0.3 m or less. Means Counter battens 8 is this roofing membrane 6 to the Rafters 9 attached. The counter battens 8 carries one Battens 7 to hold the roof tiles.
- Sd value 2 - 3 m and 10 -12 m air barrier
- Fig. 3 In the application shown in Fig. 3 is the air barrier 1 with its film side against the insulation 4 pointing attached to the rafters 9. Outside lies on the rafters 9 a formwork 10. On the formwork 10 is the open roof membrane with an Sd value of 0.3 m. There are counter battens 8 and battens 7.
- FIG. 4 it is a formwork-free roof construction, where the insulation 4 with an extremely open to diffusion Roofing membrane 6 is covered.
- Your SD value is 0.02 m.
- An air barrier is used here whose Sd value on the fleece side (direction B) is 2 m, and whose film-side Sd value (direction A) is 0.5 m.
- the air barrier is here with its fleece side attached to the rafters facing the insulation, see above that they have a Sd value of 0.5 m in the insulation unfolded.
- Air barrier 1 with its film side 3 pointing to insulation 4 stapled to the rafters 9 so that they have an Sd value unfolded from 2 m in the direction of the insulation 4. Also here is the greater water vapor transport capacity insulation is beneficial for drying out moist rafters or formwork boards too inside.
- the air lock according to the invention has the The advantage of double usability on the one hand as Air barrier with high and on the other hand as an air barrier with low water vapor diffusion barrier value.
- Air barrier with high
- air barrier with low water vapor diffusion barrier value Here through the storage can be significantly reduced.
- the finished web only needs on its surfaces to be marked accordingly so that the processor uses them according to the respective application oriented oriented.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
- Laminated Bodies (AREA)
- Tents Or Canopies (AREA)
Abstract
Description
- Fig. 1
- schematisch den Aufbau einer erfindungsgemäßen Luftsperre im Querschnitt,
- Fig. 2
- ein erstes Anwendungsbeispiel einer Luftsperre an einer Dachkonstruktion mit Vollsparrendämmung ohne Schalung,
- Fig. 3
- ein Anwendungsbeispiel bei einer Dachkonstruktion mit Vollsparrendämmung und Schalung,
- Fig. 4
- ein Anwendungsbeispiel für eine Luftsperre mit niedrigen Sd-Werten bei einem Dach mit Vollsparrendämmung und oben aufliegender, extrem diffusionsoffener Unterspannbahn und
- Fig. 5
- ein Anwendungsbeispiel gemäß Fig. 4 für eine Dachkonstruktion mit zwischen Dachunterapannbahn und Dämmung liegender Sparschalung.
Claims (13)
- Lufteprerrende aber wasserdampfdurchlässige, dünnwandige Bahn zur innenseitigen Verkleidung eines gedämmten Daches, mit einem von einem Vlies (2) getragenen dünnen Film (3), dadurch gekennzeichnet, daß der Film (3) derartig auf das Vlies (2) aufgeschmolzen und unter Druck damit innig verbunden ist, daß die Wasserdampfdurchlässigkeit von der Filmseite (A) her größer ist, als von der Vliesseite (B).
- Luftaperrende aber wasserdampfdurchlässige, dünnwandige Bahn nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, daß der die Wasserdampfdurchlässigkeit bestimmende Wasserdampf-Diffusions-Sperrwert (Sd-Wert) vliesseitig (B) um mindestens einen Faktor 3, vorzugsweise etwa um einen Faktor 5 größer ist, als filmseitig (A).
- Lufteperrende aber wasserdampfdurchlässige, dünnwandige Bahn nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, daß der vliesseitige Sd-Wert 2 - 3 m und der filmseitige Sd-Wert 0,5 - 0,6 m beträgt.
- Luftsperrende aber wasserdampfdurchlässige, dünnwandige Bahn nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, daß der vliesseitige Sd-Wert 10 - 12 m und der filmseitige 2 - 3 m beträgt.
- Lufteperrende aber wasserdampfdurchlässige, dünnwandige Bahn nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, daß der vliesseitige Sd-Wert zwischen 1 und 2,5 m und der filmseitige Sd-Wert zwischen 0,2 und 0,5 m liegt.
- Luftsperrende aber wasserdampfdurchlässige, dünnwandige Bahn nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, daß der Film aus einem 12 - 25 mµ, vorzugsweise 15 - 18 mµ oder 25 mµ LDPE-Polymer besteht.
- Luftsperrende aber wasserdampfdurchlässige, dünnwandige Bahn nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, daß der Film aus einem LDPE/EMA-Polymer besteht.
- Luftsperrende aber waaserdampfdurchlässige, dünnwandige Bahn nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, daß das Vlies ein Flächengewicht von 70 - 100 g/m2, bevorzugt 80 g/m2 aufweist und/oder ein Polypropylen-Vlies ist.
- Luftsperrende aber wasserdampfdurchlässige, dünnwandige Bahn nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, daß das Flächengewicht der Bahn ca. 90 - 110 g/m2, vorzugsweise 100 - 105 g/m2 beträgt.
- Verfahren zur Herstellung einer einen von einem Vlies getragenen Film ausgebildeten, lufteperrenden, in beide Richtungen eine verschieden große Wasserdampfdurchlässigkeit aufweisende Bahn, wobei ein zum Film verhautendes aufgeschmolzenes Polymer, in noch geschmolzenem Zustande auf das Vlies aufgetragen wird und beide Komponenten unter Druck und Temperatur innig miteinander verbunden werden.
- Verfahren nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, daß die innige Verbindung durch Kalandrieren erfolgt.
- Verfahren nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, daß das Polymer zum Film extrudiert wird.
- Verwendung einer einen auf einem Vlies aufgeschmolzenen und unter Druck damit innig verbundenen Film aufweisenden, luftsperrenden und eine in den beiden Richtungen eine verschieden große Wasserdampfdurchlässigkeit aufweisenden Bahn als innenseitige Verkleidung eines außenseitig mit einer diffusionsoffenen Unterspannbahn versehenen, gedämmten Daches, wobei die Bahn abhängig von der gewünschten Wasserdampfdurchlässigkeit in Richtung der Dämmung entweder mit ihrer Vliesseite oder mit ihrer Filmseite zur Dämmung weisend angebracht wird.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1999144819 DE19944819A1 (de) | 1999-09-18 | 1999-09-18 | Eine auf ein Vlies aufgebrachte, einen Film aufweisende, wasserdampfdurchlässige Luftsperre |
| DE19944819 | 1999-09-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1085141A2 true EP1085141A2 (de) | 2001-03-21 |
| EP1085141A3 EP1085141A3 (de) | 2001-07-04 |
Family
ID=7922508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00118939A Ceased EP1085141A3 (de) | 1999-09-18 | 2000-09-01 | Eine auf ein Vlies aufgebrachte, einen Film aufweisende, wasserdampfdurchlässige Luftsperre |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1085141A3 (de) |
| DE (1) | DE19944819A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200399904A1 (en) * | 2019-06-24 | 2020-12-24 | Owens Corning Intellectual Capital, Llc | Roofing underlayment with hydrophobic nonwoven core |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008024944B4 (de) | 2007-08-22 | 2018-05-09 | Eswegee Vliesstoff Gmbh | Grundvlies für Trilaminate |
| DE102007060358A1 (de) * | 2007-12-12 | 2009-06-18 | Ewald Dörken Ag | Dampfdurchlässiges Laminat |
| DE102010000377A1 (de) | 2010-02-11 | 2011-08-11 | Monier Roofing Components GmbH, 61440 | Dachunterspannbahn mit Nagelstreifen |
| PL2759403T3 (pl) | 2013-01-29 | 2016-12-30 | Ukierunkowana paroizolacja wykazująca zmienność pod wpływem wilgotności |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4684568A (en) * | 1986-04-21 | 1987-08-04 | E. I. Du Pont De Nemours And Company | Vapor-permeable liquid-impermeable fabric |
| US5208098A (en) * | 1990-10-23 | 1993-05-04 | Amoco Corporation | Self-bonded nonwoven web and porous film composites |
| CH686370A5 (de) * | 1994-04-19 | 1996-03-15 | Sarna Patent & Lizenz Ag | Kunststoffbahn. |
| US5865926A (en) * | 1996-02-15 | 1999-02-02 | Clopay Plastic Products Company, Inc. | Method of making a cloth-like microporous laminate of a nonwoven fibrous web and thermoplastic film having air and moisture vapor permeabilities with liquid-barrier properties |
| US6506695B2 (en) * | 1998-04-21 | 2003-01-14 | Rheinische Kunststoffewerke Gmbh | Breathable composite and method therefor |
-
1999
- 1999-09-18 DE DE1999144819 patent/DE19944819A1/de not_active Withdrawn
-
2000
- 2000-09-01 EP EP00118939A patent/EP1085141A3/de not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200399904A1 (en) * | 2019-06-24 | 2020-12-24 | Owens Corning Intellectual Capital, Llc | Roofing underlayment with hydrophobic nonwoven core |
| US11518137B2 (en) * | 2019-06-24 | 2022-12-06 | Owens Corning Intellectual Capital, Llc | Roofing underlayment with hydrophobic nonwoven core |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1085141A3 (de) | 2001-07-04 |
| DE19944819A1 (de) | 2001-03-22 |
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Owner name: LAFARGE ROOF SYSTEM COMPONENTS GMBH & CO. KG |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LAFARGE ROOFING COMPONENTS GMBH & CO. KG |
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