EP1420041A2 - Flexibles Folienmaterial - Google Patents

Flexibles Folienmaterial Download PDF

Info

Publication number: EP1420041A2
Authority: EP; European Patent Office
Prior art keywords: sheet material; flexible sheet; film; material according; membrane
Prior art date: 2002-11-18
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.): Granted

Application number

EP03078703A

Other languages

English (en)

French (fr)

Other versions

EP1420041B1 (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.)

2002-11-18

Filing date

2003-11-18

Publication date

2004-05-19

2003-11-18 Application filed by Icopal AS filed Critical Icopal AS

2004-05-19 Publication of EP1420041A2 publication Critical patent/EP1420041A2/de

2004-08-11 Publication of EP1420041A3 publication Critical patent/EP1420041A3/de

2010-04-14 Application granted granted Critical

2010-04-14 Publication of EP1420041B1 publication Critical patent/EP1420041B1/de

2023-11-18 Anticipated expiration legal-status Critical

Status 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.
a flexible sheet material comprising a first film or membrane having a thickness of less than 50 ⁇ m, wherein said film or membrane is coated with 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 .
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 may further comprise 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 may comprise any conventional fire retardant, such as water glass or different types of fire retardant including bromine.
the fire retardant may be 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 having a thickness of less than 50 ⁇ m, and this first film or membrane is coated with 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 .
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.
Figs. 1-4 show sectional views of four different embodiments of a flexible sheet material.
Fig. 1 is a sectional view of a first embodiment of a flexible sheet material according to the invention.
the flexible sheet material comprises upper and lower layers, 10 and 11, respectively, of coated films of polyethylene terephthalate each having a thickness of 12 ⁇ m.
the polyethylene terephthalate films are coated with silicon oxide.
the upper layer 10 is laminated to the lower layer 11 by means of an intermediate adhesive layer 12, such as urethane glue of approximately 2 ⁇ m, having a fire retardant, such as intumescent graphite, incorporated therein.
the gross calorific value of this flexible sheet material is 0.8 MJ/m 2 , and the water vapour diffusion resistance is 180 m air column.
Fig. 2 is a sectional view of a second embodiment of a flexible sheet material according to the invention.
the second embodiment also comprises upper and lower layers, 10 and 11, of coated films of polyethylene terephthalate each having a thickness of 12 ⁇ m. Also these layers are laminated together by an adhesive layer 12, such as urethane glue of approximately 2 ⁇ m, having a fire retardant, such as intumescent graphite, incorporated therein. Furthermore, a glass netting 13 is incorporated in the adhesive layer 12 in order to increase the strength of the flexible sheet material.
the gross calorific value of this flexible sheet material is 1.0 MJ/m 2 , and the water vapour diffusion resistance is 150 m air column.
Fig. 3 illustrates a sectional view of a third embodiment of a flexible sheet material according to the invention.
the flexible sheet material illustrated in Fig. 3 comprises an upper layer 10 formed by a coated film of polyethylene terephthalate having a thickness of 12 ⁇ m laminated to an intermediate film 14 of polyethylene with a thickness of 30 ⁇ m.
An adhesive layer 12, such as urethane glue of approximately 2 ⁇ m, having a fire retardant, such as intumescent graphite, incorporated therein is arranged between the upper layer 10 and the intermediate layer 14.
a lower lever 15 of glass felt with a thickness grammage of 50 gr/m 2 is laminated to the intermediate film 14 of polyethylene.
the gross calorific value of this flexible sheet material is 2.2 MJ/m 2 , and the water vapour diffusion resistance is 98 m air column.
Fig. 4 illustrates a sectional view of a fourth embodiment of a flexible sheet material according to the invention.
the flexible sheet material of Fig. 4 comprises an upper layer 10 of coated polyethylene terephthalate having a thickness of 12 ⁇ m laminated to a lower layer 11 of co-extruded oriented polypropylene having a thickness of 18 ⁇ m by an intermediate adhesive layer 12 in the form of urethane glue of approximately 2 ⁇ m.
the gross calorific value of this flexible sheet material is 1.8 MJ/m 2
the water vapour diffusion resistance is 82 m air column.

Landscapes

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

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

Applications Claiming Priority (2)

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

Publications (3)

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

Family

ID=32116202

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP03078703A Expired - Lifetime EP1420041B1 (de)	2002-11-18	2003-11-18	Flexibles Folienmaterial

Country Status (4)

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

Cited By (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

Families Citing this family (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
US20070040501A1 (en)	2005-08-18	2007-02-22	Aitken Bruce G	Method for inhibiting oxygen and moisture degradation of a device and the resulting device

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, 30952 Ronnenberg	Dampfsperrverbund

2003
- 2003-11-18 AT AT03078703T patent/ATE464342T1/de not_active IP Right Cessation
- 2003-11-18 DE DE60332080T patent/DE60332080D1/de not_active Expired - Lifetime
- 2003-11-18 EP EP03078703A patent/EP1420041B1/de not_active Expired - Lifetime
- 2003-11-18 DK DK03078703.0T patent/DK1420041T3/da active

Cited By (2)

* 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
US8435605B2 (en)	2006-11-30	2013-05-07	Corning Incorporated	Flexible substrates having a thin-film barrier

Also Published As

Publication number	Publication date
DK1420041T3 (da)	2010-08-09
EP1420041B1 (de)	2010-04-14
DE60332080D1 (de)	2010-05-27
EP1420041A3 (de)	2004-08-11
ATE464342T1 (de)	2010-04-15

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