EP1420041B1 - Flexibles Folienmaterial - Google Patents

Flexibles Folienmaterial Download PDF

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Publication number
EP1420041B1
EP1420041B1 EP03078703A EP03078703A EP1420041B1 EP 1420041 B1 EP1420041 B1 EP 1420041B1 EP 03078703 A EP03078703 A EP 03078703A EP 03078703 A EP03078703 A EP 03078703A EP 1420041 B1 EP1420041 B1 EP 1420041B1
Authority
EP
European Patent Office
Prior art keywords
sheet material
flexible sheet
film
membrane
material according
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.)
Expired - Lifetime
Application number
EP03078703A
Other languages
English (en)
French (fr)
Other versions
EP1420041A2 (de
EP1420041A3 (de
Inventor
Sven Harder
Eirik Sandberg Jensen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Icopal AS
Original Assignee
Icopal AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Icopal AS filed Critical Icopal AS
Publication of EP1420041A2 publication Critical patent/EP1420041A2/de
Publication of EP1420041A3 publication Critical patent/EP1420041A3/de
Application granted granted Critical
Publication of EP1420041B1 publication Critical patent/EP1420041B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • E04B1/625—Sheets or foils allowing passage of water vapor but impervious to liquid water; house wraps

Definitions

  • the present invention relates to a fire resistant flexible sheet material with a high water vapour diffusion resistance and a low gross calorific potential.
  • the flexible sheet material may advantageously be used as a water vapour barrier in roof constructions.
  • the heat insulation When the heat insulation is placed on the outside of the load-bearing construction as in for example steel deck constructions, the heat insulation is placed between two water impermeable membranes, i.e. the water vapour barrier and the roofing.
  • This type of roof construction imposes requirements on the water vapour barrier used.
  • the water vapour diffusion resistance of the water vapour barrier should be high, due to a high water vapour diffusion resistance of the roofing.
  • the building code imposes requirements on the water vapour barrier with regard to the gross calorific potential which, as a consequence of fire classification of construction products and building elements, must be low.
  • a laminate including an aluminium foil has been used to obtain a water vapour barrier with a high water vapour diffusion resistance.
  • the aluminium foil requires corrosion protection, e.g. with polyethylene, in order to prevent corrosion thereof, when the water vapour barrier is placed in a humid environment, such as in a roof construction or in a construction in swimming baths.
  • a corrosion protection in the form of e.g. polyethylene will add to the gross calorific potential of the water vapour barrier and impede the fulfilment of the requirements of the building code.
  • the flames used for attaching the roofing felt accidentally hit the laminate including an aluminium foil, e.g.
  • the aluminium will act as a fire spreader and the fire may spread down through the roof construction.
  • the problem cannot be solved by adding a large amount of fire retardant to the laminate due to the fact, that the second film of the laminate, i.e. the plastic film, cannot adhere to the aluminium foil, when using a large amount of fire retardant.
  • DE 200 19 212 U discloses a barrier laminate comprising an aluminum foil acting as a water vapour membrane, which is coated on one side with a layer of plastic such as, for example polyethylene terephthalate, while on the other side it is coated with a non combustible lacquer for protection against corrosion and for improving adhesion between aluminum and a bitumen layer. Its use in roofing and its method of making are as well described therein.
  • WO 00 37751 discloses a water vapour multi layer barrier film, that comprises a first, water impervious membrane having a plurality of first through openings defined therein, and a second, water impervious membrane which is arranged opposite to the first membrane; the whole film exhibits a "heating value" not exceeding 4 MJ/m ⁇ 2 ⁇
  • One of the membranes, or an additional layer of the barrier film can be made of polyamide resin in order to improve fire retardant properties.
  • the water vapour diffusion resistance of the first membrane which is said to be substantially impervious to water vapour, should be equivalent to 10-100 m air column at any relative humidity of air in contact therewith, but the water vapour diffusion resistance may also be equivalent to 2000 m air column or even higher depending on the chosen material.
  • a flexible sheet material comprising a first film or membrane of a plastic material having a thickness of less than 50 ⁇ m, wherein said film or membrane has a substantially non-combustible coating so as to obtain a water vapour diffusion resistance of the sheet material exceeding 45 m air column and a gross calorific potential not exceeding 4 MJ/m 2 , and further comprising intumescent graphite as a fire retardant within or adjacent to said first film or membrane.
  • the gross calorific potential is defined as the calorific value of a material, when the combustion is complete and any produced water is entirely condensed, and the calorific value is defined as the thermal energy produced by combustion of unit of mass of a given substance.
  • the thickness of the film or membrane is reduced compared to traditional water vapour barriers with a high water vapour diffusion resistance.
  • the film or membrane is coated with a substantially non-combustible coating.
  • the thickness of the first film or membrane may be less than 40 ⁇ m, such as less than 30 ⁇ m or less than 25 ⁇ m.
  • the film or membrane may in one embodiment be coated with a substantially non-combustible coating so as to obtain a water vapour diffusion resistance of the sheet material exceeding 60 m air column.
  • a second film or membrane may be laminated to the first film or membrane. Laminating the second film or membrane at the coated side of the first film or membrane, the second film or membrane may be used as a protection for the coating of the first film or membrane, whereby the sheet material may be used in e.g. a harsh environment.
  • the flexible sheet material further comprises a fire retardant.
  • the fire retardant may be arranged in any position within or adjacent to the first film or membrane. Thus, it may be arranged between the first and second films or membranes, and in a preferred embodiment the fire retardant may be incorporated in an adhesive layer arranged between the first and second films or membranes.
  • the adhesive layer may comprise urethane, epoxy or other glue, an adhesive web or film, or others.
  • the fire retardant used in the flexible sheet material according to the invention is intumescent graphite, which may expand to a volume being up to 100 times the initial volume.
  • the second film or membrane may be coated with a substantially non-combustible coating in order to obtain a flexible sheet material comprising two films or membranes being coated with a substantially non-combustible coating, whereby the thickness of each of the films may be reduced without reducing the water vapour diffusion resistance of the sheet material.
  • the second film or membrane may comprise a porous fibrous material, such as felt with a low calorific value, e.g. Nylon felt or glass felt.
  • a porous fibrous material such as felt with a low calorific value, e.g. Nylon felt or glass felt.
  • the second film or membrane may serve as a sound absorber and/or as physical protection of the flexible sheet material.
  • the first film or membrane may comprise a layer of a plastic material.
  • the second film or membrane may also comprise a layer of a plastic material.
  • the plastic material may be polyethylene terephthalate (PETP), polyethylene naphthalate (PEN), or copolymers thereof, oriented polypropylene (OPP), polyethylene (PE), oriented polyamide (OPA), Cyclic Olefinic Copolymers (COC) or Aclar, Aclar being a flexible thermoplastic made of fluorinated-chlorinated resins. Other plastic materials may also be used.
  • Aclar-film is Aclar CxTM8A (33 ⁇ m), which is a heat-sealable polychlorotrifluoroethylene (PCTFE) homopolymer film co-extrusion.
  • the structure consists of an 8 ⁇ m Aclar film layer laminated to a 25 ⁇ m layer of polyethylene (PE).
  • the films or membranes may be coated with a substantially non-combustible coating, such as silicon oxide, aluminium oxide, aluminium or polyvinylidenechloride.
  • the films or membranes may be coated more than once using one or more of the coatings in combination, whereby a synergy effect may be achieved in that one film or membrane coated twice may be used instead of using a laminate of two films or membranes each coated once.
  • An example of a combination of coatings is a PVdC-coating (polyvinylidenechloride) followed by an aluminium coating.
  • Another example is an EVOH-coating (ethylene vinyl alcohol) followed by an aluminium coating.
  • Other combinations may also be used.
  • the coating using silicon oxide (SiO x ), aluminium oxide or aluminium may be performed under low pressure and high temperature, such as a plasma deposition coating. By the use of plasma deposition coating a thin coating with an even surface structure may be obtained. Condensation or spray coating may also be used.
  • the coating using polyvinylidenechloride may be performed as a standard coating process using gravure rollers and drying tunnel. However, other coating processes may also be used.
  • the sheet material may further comprise reinforcing means.
  • the reinforcing means may be arranged in any position adjacent to the first film or membrane. Thus, it may be arranged between the first and second films or membranes, and in a preferred embodiment, the reinforcing means may be incorporated in an adhesive layer arranged between the first and second films or membranes.
  • the reinforcing means may comprise a netting.
  • the reinforcing means may be made of glass, polypropylene, polyester or polyethylene.
  • the flexible sheet material may have a gross calorific potential not exceeding 2 MJ/m 2 .
  • the flexible sheet material may have a gross calorific potential not exceeding 1.4 MJ/m 2 , and/or a water vapour diffusion resistance exceeding 90 m air column.
  • a flexible sheet material is used as a water vapour barrier or an underroof for buildings.
  • the flexible sheet material comprise a first film or membrane of a plastic material having a thickness of less than 50 ⁇ m, and this first film or membrane has a substantially non-combustible coating so as to obtain a water vapour diffusion resistance of the flexible sheet material exceeding 45 m air column and a gross calorific potential of the flexible sheet material not exceeding 4 MJ/m 2 , and intumescent graphite is present as a fire retardant within or adjacent to said first film or membrane.
  • any of the features of the flexible sheet material according to the invention may be used in combination with the flexible sheet material used as a water vapour barrier or as an underroof for buildings.
  • a non-homogeneous product is a product composed of one or more components which may be substantial or non-substantial.
  • a non-substantial component is a material which does not constitute a significant part of a non-homogeneous product.
  • a layer with a mass/unit area of less than 1.0 kg/m 2 and a thickness of less than 1.0 mm is considered to be a non-substantial component.
  • An internal non-substantial component is defined as a non-substantial component covered on both sides by at least one substantial component, whereas an external non-substantial component is not covered at one side of a substantial component.
  • a water vapour barrier may be classified as an external non-substantial component of a non-homogeneous product.
  • the gross calorific potential of a water vapour barrier i.e. an external non-substantial component of a non-homogeneous product should not exceed 2 MJ/m 2 , when belonging to class A1. Furthermore, the gross calorific potential of a water vapour barrier, i.e. an external non-substantial component of a non-homogeneous product should not exceed 4 MJ/m 2 , when belonging to class A2.
  • Class A1 and A2 are the two highest classes in the classification of reaction to fire performance for construction products being tested in accordance with the Standard, class A1 being higher than A2 as the requirements of A1 are more strict than the requirements of A2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Building Environments (AREA)
  • Tents Or Canopies (AREA)

Claims (18)

  1. Biegsames Folienmaterial, umfassend einen ersten Film oder eine erste Membran aus einem Kunststoffmaterial und mit einer Dicke von weniger als 50 µm, wobei der Film oder die Membran eine im Wesentlichen nicht brennbare Beschichtung aufweist, um einen Wasserdampfdiffusionswiderstand des Folienmaterials von mehr als 45 m Luftsäule und einen Bruttoheizwert des Folienmaterials von nicht mehr als 4 MJ/m2 zu erhalten, und weiterhin umfassend Blähgrafit als ein feuerhemmendes Mittel innerhalb des ersten Films oder der ersten Membran oder benachbart dazu.
  2. Biegsames Folienmaterial nach Anspruch 1, wobei die Dicke des ersten Films oder der ersten Membran weniger als 30 µm beträgt.
  3. Biegsames Folienmaterial nach Anspruch 1 oder 2, wobei der Film oder die Membran eine im Wesentlichen nicht brennbare Beschichtung aufweist, um einen Wasserdampfdiffusionswiderstand des Folienmaterials von mehr als 60 m Luftsäule zu erhalten.
  4. Biegsames Folienmaterial nach einem der vorhergehenden Ansprüche, weiterhin umfassend einen zweiten Film oder eine zweite Membran, der bzw. die auf den ersten Film oder die erste Membran laminiert ist.
  5. Biegsames Folienmaterial nach Anspruch 4, wobei das feuerhemmende Mittel in eine Klebschicht eingearbeitet ist, die zwischen dem ersten und zweiten Film oder der ersten und zweiten Membran angeordnet ist.
  6. Biegsames Folienmaterial nach einem der Ansprüche 4 oder 5, wobei der zweite Film oder die zweite Membran mit einer im Wesentlichen nicht brennbaren Beschichtung beschichtet ist.
  7. Biegsames Folienmaterial nach einem der Ansprüche 4-6, wobei der zweite Film oder die zweite Membran ein poröses Fasermaterial umfasst.
  8. Biegsames Folienmaterial nach Anspruch 7, wobei der zweite Film oder die zweite Membran Nylonfilz oder Glasfilz umfasst.
  9. Biegsames Folienmaterial nach einem der Ansprüche 4-8, wobei der zweite Film oder die zweite Membran eine Schicht aus einem Kunststoffmaterial umfasst.
  10. Biegsames Folienmaterial nach einem der vorhergehenden Ansprüche, wobei das Kunststoffmaterial ausgewählt ist aus der Gruppe, bestehend aus Polyethylenterephthalat (PETP), Polyethylennaphthalat (PEN) oder Copolymeren davon, gerecktem Polypropylen (OPP), Polyethylen (PE), gerecktem Polyamid (OPA), Aclar und cyclischen olefinischen Copolymeren (COC).
  11. Biegsames Folienmaterial nach einem der vorhergehenden Ansprüche, wobei die Beschichtung des ersten und/oder zweiten Films oder der ersten und/oder zweiten Membran mindestens ein Material umfasst, ausgewählt aus der Gruppe, bestehend aus Siliziumoxid, Aluminiumoxid, Aluminium und Polyvinylidenchlorid.
  12. Biegsames Folienmaterial nach einem der vorhergehenden Ansprüche und weiterhin umfassend Verstärkungsmittel zur Erhöhung der Festigkeit des Folienmaterials.
  13. Biegsames Folienmaterial nach Anspruch 12, wobei das Verstärkungsmittel ein Netzgewebe umfasst.
  14. Biegsames Folienmaterial nach Anspruch 12 oder 13, wobei das Verstärkungsmittel aus einem Material hergestellt ist, ausgewählt aus der Gruppe, bestehend aus Glas, Polypropylen, Polyester und Polyethylen.
  15. Biegsames Folienmaterial nach einem der vorhergehenden Ansprüche und mit einem Bruttoheizwert von nicht mehr als 2 MJ/m2.
  16. Biegsames Folienmaterial nach Anspruch 15, wobei der Bruttoheizwert nicht mehr als 1,4 MJ/m2 beträgt.
  17. Biegsames Folienmaterial nach einem der vorhergehenden Ansprüche, wobei der Wasserdampfdiffusionswiderstand mehr als 90 m Luftsäule beträgt.
  18. Verwendung eines biegsamen Folienmaterials als Dampfsperre oder Unterdach für Gebäude, wobei das biegsame Folienmaterial einen ersten Film oder eine erste Membran aus einem Kunststoffmaterial und mit einer Dicke von weniger als 50 µm umfasst, wobei der Film oder die Membran eine im Wesentlichen nicht brennbare Beschichtung aufweist, um einen Wasserdampfdiffusionswiderstand des Folienmaterials von mehr als 45 m Luftsäule und einen Bruttoheizwert des Folienmaterials von nicht mehr als 4 MJ/m2 zu erhalten, und weiterhin Blähgrafit als ein feuerhemmendes Mittel innerhalb des ersten Films oder der ersten Membran oder benachbart dazu umfasst.
EP03078703A 2002-11-18 2003-11-18 Flexibles Folienmaterial Expired - Lifetime EP1420041B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200201772 2002-11-18
DK200201772 2002-11-18

Publications (3)

Publication Number Publication Date
EP1420041A2 EP1420041A2 (de) 2004-05-19
EP1420041A3 EP1420041A3 (de) 2004-08-11
EP1420041B1 true EP1420041B1 (de) 2010-04-14

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Family Applications (1)

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EP03078703A Expired - Lifetime EP1420041B1 (de) 2002-11-18 2003-11-18 Flexibles Folienmaterial

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EP (1) EP1420041B1 (de)
AT (1) ATE464342T1 (de)
DE (1) DE60332080D1 (de)
DK (1) DK1420041T3 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7722929B2 (en) 2005-08-18 2010-05-25 Corning Incorporated Sealing technique for decreasing the time it takes to hermetically seal a device and the resulting hermetically sealed device
US7829147B2 (en) 2005-08-18 2010-11-09 Corning Incorporated Hermetically sealing a device without a heat treating step and the resulting hermetically sealed device
US9050622B2 (en) 2005-08-18 2015-06-09 Corning Incorporated Method for inhibiting oxygen and moisture degradation of a device and the resulting device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8115326B2 (en) 2006-11-30 2012-02-14 Corning Incorporated Flexible substrates having a thin-film barrier

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20019212U1 (de) * 2000-11-11 2001-03-08 Bachmann Alutec Gmbh Dampfsperrverbund

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7722929B2 (en) 2005-08-18 2010-05-25 Corning Incorporated Sealing technique for decreasing the time it takes to hermetically seal a device and the resulting hermetically sealed device
US7829147B2 (en) 2005-08-18 2010-11-09 Corning Incorporated Hermetically sealing a device without a heat treating step and the resulting hermetically sealed device
US8304990B2 (en) 2005-08-18 2012-11-06 Corning Incorporated Hermetically sealing a device without a heat treating step and the resulting hermetically sealed device
US8435604B2 (en) 2005-08-18 2013-05-07 Corning Incorporated Sealing technique for decreasing the time it takes to hermetically seal a device and the resulting hermetically sealed device
US9050622B2 (en) 2005-08-18 2015-06-09 Corning Incorporated Method for inhibiting oxygen and moisture degradation of a device and the resulting device

Also Published As

Publication number Publication date
EP1420041A2 (de) 2004-05-19
DK1420041T3 (da) 2010-08-09
DE60332080D1 (de) 2010-05-27
EP1420041A3 (de) 2004-08-11
ATE464342T1 (de) 2010-04-15

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