EP0162391A2 - Non-woven fabric for making fire-resistant roofing material - Google Patents

Non-woven fabric for making fire-resistant roofing material Download PDF

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Publication number
EP0162391A2
EP0162391A2 EP19850105816 EP85105816A EP0162391A2 EP 0162391 A2 EP0162391 A2 EP 0162391A2 EP 19850105816 EP19850105816 EP 19850105816 EP 85105816 A EP85105816 A EP 85105816A EP 0162391 A2 EP0162391 A2 EP 0162391A2
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EP
European Patent Office
Prior art keywords
nonwoven
nonwoven fabric
filaments
fibers
flame
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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Application number
EP19850105816
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German (de)
French (fr)
Other versions
EP0162391A3 (en
Inventor
Franz Kaulich
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.)
Hoechst AG
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Hoechst AG
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Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of EP0162391A2 publication Critical patent/EP0162391A2/en
Publication of EP0162391A3 publication Critical patent/EP0162391A3/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/02—Roof covering by making use of flexible material, e.g. supplied in roll form of materials impregnated with sealing substances, e.g. roofing felt
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N5/00—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/92—Fire or heat protection feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/92—Fire or heat protection feature
    • Y10S428/921—Fire or flameproofing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31815—Of bituminous or tarry residue
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/647—Including a foamed layer or component
    • Y10T442/652—Nonwoven fabric is coated, impregnated, or autogenously bonded

Definitions

  • the present invention relates to a nonwoven fabric, which preferably consists of polyester filaments and is suitable for use in roofing membranes that are resistant to flying flames and radiant heat.
  • These roofing sheets are usually provided with a bitumen layer, but can also have a coating of elastomers or plastomers.
  • Such carriers for roofing membranes are known per se from German Patent 28 27 136. They consist of a nonwoven, e.g. made of polyester filaments and one punctiform e.g. metal foil fastened by needles, for example a folded aluminum foil. Such a metal foil is preserved as an undamaged layer in a local flying fire and thereby prevents the fire from spreading into the lower layers of a roof waterproofing.
  • the above-mentioned laminate made of a fleece and a metal foil is effective against flying fire and radiant heat, but it can only be produced with great effort.
  • German Offenlegungsschrift 26 55 038 describes a process for the production of flame-retardant bitumen corrugated sheets.
  • the raw cardboard used for this purpose is to be impregnated with an aqueous solution of a mixture of a wide variety of flame retardants. After the cardboard thus impregnated has been shaped and dried, it is then impregnated with bitumen.
  • the use of such a mixture in a nonwoven also does not lead to the desired success.
  • there are processing difficulties which include are based on the significantly lower absorbency and swelling capacity of the nonwoven used and on the substantially higher flexibility of the nonwoven as a reinforcing material.
  • nonwovens made of synthetic fibers and / or filaments meet the desired requirements if, according to the present invention, they are equipped with a flame retardant prior to coating, which is inert up to temperatures well above the melting point of the coating material, and higher Temperatures but forms a largely closed layer on the nonwoven.
  • the closed layer which forms should preferably have a foam-like character. If the nonwoven is coated with bitumen, this should be done according to the invention required fire protection agents are inert at least up to temperatures of about 220 ° C, preferably 250 t or even 300 ° C, but then form a largely closed layer at slightly higher temperatures.
  • these flame retardant finishes can be applied to the nonwoven directly during the formation of the nonwoven or simultaneously with binders or other finishing agents.
  • this equipment can be integrated into the normal nonwoven manufacturing process and requires no further process steps and no additional devices for its production.
  • the equipment can also be used according to known methods such as e.g. passing through an immersion bath, splashing or spraying e.g. in the form of aqueous dispersions, if appropriate, be applied immediately before the actual bitumen coating, provided that it is ensured that the dispersant is largely removed again before the actual coating.
  • a surface-covering, preferably foam-like layer should form at high temperatures in accordance with the invention, which cannot flow off through non-melting nonwoven layers, but, like the metal foil according to the prior art, spread the fire into the nonwoven layers and bitumen layers underneath as well as the others Roof structure prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Textile Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Arc Welding In General (AREA)

Abstract

Die Erfindung betrifft einen Vliesstoff aus synthetischen Fasern oder Filamenten zur Herstellung von Dachbahnen durch Beschichtung mit schmelzbaren Beschichtungsmassen. Ein solcher Vliesstoff ist mit einer flammhemmenden Ausrüstung versehen, die bei den Verarbeitungstemperaturen der Beschichtungsmasse, (z.B. bis etwa 250°C) sich noch inert verhält, bei höheren Temperaturen jedoch eine weitgehend geschlossene, vorzugsweise schaumartige Schicht ausbildet, die vorzugsweise in einem Brandfall auch dann an ihrem Ort verbleibt, wenn die sie tragenden Fasern bzw. Filamente das Vliesstoffes wegschmelzen.The invention relates to a nonwoven fabric made of synthetic fibers or filaments for the production of roofing membranes by coating with meltable coating compositions. Such a nonwoven is provided with a flame-retardant finish which is still inert at the processing temperatures of the coating material (for example up to about 250 ° C.), but forms a largely closed, preferably foam-like layer at higher temperatures, which is also preferred in the event of a fire remains in place when the fibers or filaments carrying it melt away the nonwoven.

Description

Die vorliegende Erfindung betrifft einen Vliesstoff, der bevorzugt aus Polyesterfilamenten besteht und für den Einsatz in Dachbahnen geeignet ist, die gegen Flugfeuer und strahlende Wärme beständig sind. Diese Dachbahnen sind meist mit einer Bitumenschicht versehen, können aber auch eine Beschichtung aus Elastomeren oder Plastomeren aufweisen.The present invention relates to a nonwoven fabric, which preferably consists of polyester filaments and is suitable for use in roofing membranes that are resistant to flying flames and radiant heat. These roofing sheets are usually provided with a bitumen layer, but can also have a coating of elastomers or plastomers.

Derartige Träger für Dachbahnen sind aus der Deutschen Patentschrift 28 27 136 ansich bekannt. Sie bestehen aus einem Vliesstoff, z.B. aus Polyesterfilamenten und einer darauf punktförmig z.B. durch Nadeln befestigten Metallfolie beispielsweise einer gefälteten Aluminiumfolie. Eine solche Metallfolie bleibt bei einem lokalen Flugfeuer als unversehrte Schicht erhalten und verhindert dadurch das Ausbreiten des Brandes in die unteren Schichten einer Dachabdichtung. Der genannte Schichtstoff aus einem Vlies und einer Metallfolie ist zwar gut gegen Flugfeuer und strahlende Wärme wirksam, er kann jedoch nur sehr aufwendig hergestellt werden.Such carriers for roofing membranes are known per se from German Patent 28 27 136. They consist of a nonwoven, e.g. made of polyester filaments and one punctiform e.g. metal foil fastened by needles, for example a folded aluminum foil. Such a metal foil is preserved as an undamaged layer in a local flying fire and thereby prevents the fire from spreading into the lower layers of a roof waterproofing. The above-mentioned laminate made of a fleece and a metal foil is effective against flying fire and radiant heat, but it can only be produced with great effort.

Es ist bereits vorgeschlagen worden, Vliesstoffe aus flammhemmenden Faserrohstoffen herzustellen. Der Einsatz derartiger Faser- bzw. Fädenrohstoffe bei der Herstellung der benötigten Vliese führte jedoch nicht zu dem erwünschten Erfolg. Ein Ausbreiten des Brandes in untere Schichten einer Dachabdeckung konnte so nicht verhindert werden. Auch flammhemmende Zusätze zur Bitumenmasse bzw. einer Polymermasse zeigten keinen Erfolg. Die flammhemmenden Zusätze fließen in einem Brandfall mit dem Bitumen davon, so daß der zurückbleibende Vliesstoff und die unteren Schichten nicht mehr durch diese Zusätze geschützt werden.It has already been proposed to produce nonwovens from flame-retardant fiber raw materials. However, the use of such fiber or thread raw materials in the production of the required nonwovens did not lead to the desired success. A spread of fire in the lower layers of a roof covering could not be prevented. Flame retardant additives to the bitumen mass or a polymer mass were also unsuccessful. In the event of a fire, the flame retardant additives flow away with the bitumen, so that the nonwoven fabric that remains and the lower layers are no longer protected by these additives.

Das Aufbringen von flammhemmenden Zusätzen auf der Oberfläche derartiger Dachbahnen weist den weiteren Nachteil auf, daß die flammhemmenden Materialien ständig dem Einfluß der Witterung ausgesetzt sind.The application of flame retardant additives to the surface of such roofing membranes has the further disadvantage that the flame retardant materials are constantly exposed to the weather.

In der Deutschen Offenlegungsschrift 26 55 038 wird ein Verfahren zur Herstellung von schwerbrennbaren Bitumen-Wellplatten beschrieben. Hierbei soll die für diesen Zweck eingesetzte Rohpappe mit einer wäßrigen Lösung einer Mischung der verschiedensten flammhemmenden Mittel imprägniert werden. Nach dem Verformen und Trocknen der so imprägnierten Pappe erfolgt anschließend ein Tränken mit Bitumen. Der Einsatz einer derartigen Mischung bei einem Vliesstoff führt ebenfalls nicht zu dem gewünschten Erfolg. Dazu kommen noch Verarbeitungsschwierigkeiten, die u.a. auf der wesentlich geringerer Saug- und Quellfähigkeit des eingesetzten Vliesstoffes und auf der wesentlich höheren Flexibilität des Vliesstoffes als Verstärkungsmaterial beruhen.German Offenlegungsschrift 26 55 038 describes a process for the production of flame-retardant bitumen corrugated sheets. The raw cardboard used for this purpose is to be impregnated with an aqueous solution of a mixture of a wide variety of flame retardants. After the cardboard thus impregnated has been shaped and dried, it is then impregnated with bitumen. The use of such a mixture in a nonwoven also does not lead to the desired success. In addition, there are processing difficulties, which include are based on the significantly lower absorbency and swelling capacity of the nonwoven used and on the substantially higher flexibility of the nonwoven as a reinforcing material.

Es bestand daher immer noch die Aufgabe, einen Vliesstoff aus synthetischen Filamenten und/oder Fasern, z.B. aus Polyester, zu finden, der sich zur Herstellung beschichteter Dachbahnen, die beständig gegen Flugfeuer und strahlende Wärme sind, eignet.There was therefore still the task of producing a nonwoven fabric made of synthetic filaments and / or fibers, e.g. made of polyester, which is suitable for the production of coated roofing membranes that are resistant to flight fire and radiant heat.

Überraschend wurde nun gefunden, daß Vliesstoffe aus synthetischen Fasern und/oder Filamenten die gewünschten Anforderungen erfüllen, wenn sie gemäß der vorliegenden Erfindung vor dem Beschichten mit einem Brennschutzmittel ausgerüstet werden, das sich bis zu Temperaturen deutlich über dem Schmelzpunkt des Beschichtungsmaterials inert verhält, bei höheren Temperaturen aber eine weitgehend geschlossene Schicht auf dem Vliesstoff bildet. Bevorzugt sollte die sich ausbildende geschlossene Schicht einen schaumartigen Charakter aufweisen. Bei einer Beschichtung des Vliesstoffes mit Bitumen sollte das erfindungsgemäß erforderliche Brandschutzmittel sich wenigstens bis zu Temperaturen von etwa 220°C vorzugsweise 250toder sogar 300°C inert verhalten, bei wenig höheren Temperaturen dann jedoch eine weitgehend geschlossene Schicht bilden.Surprisingly, it has now been found that nonwovens made of synthetic fibers and / or filaments meet the desired requirements if, according to the present invention, they are equipped with a flame retardant prior to coating, which is inert up to temperatures well above the melting point of the coating material, and higher Temperatures but forms a largely closed layer on the nonwoven. The closed layer which forms should preferably have a foam-like character. If the nonwoven is coated with bitumen, this should be done according to the invention required fire protection agents are inert at least up to temperatures of about 220 ° C, preferably 250 t or even 300 ° C, but then form a largely closed layer at slightly higher temperatures.

Diese flammhemmenden Ausrüstungen können unmittelbar bei der Vliesstoffbildung oder aber gleichzeitig mit Bindemitteln oder sonstigen Ausrüstungsmitteln auf das Vlies aufgebracht werden. Durch eine derartige Kombination ist diese Ausrüstung in das normale Vliesherstellverfahren integrierbar und erfordert keine weiteren Verfahrensschritte und keine zusätzlichen Vorrichtungen zu seiner Herstellung. Die Ausrüstungen können jedoch auch nach ansich bekannten Methoden wie z.B. das Führen durch ein Tauchbad, Pflatschen oder Sprühen z.B. in Form wäßriger Dispersionen gegebenenfalls noch unmittelbar vor dem eigentlichen Bitumieren aufgebracht werden, sofern dafür gesorgt wird, daß das Dispergiermittel vor der eigentlichen Beschichtung wieder weitgehend entfernt wird.These flame retardant finishes can be applied to the nonwoven directly during the formation of the nonwoven or simultaneously with binders or other finishing agents. Through such a combination, this equipment can be integrated into the normal nonwoven manufacturing process and requires no further process steps and no additional devices for its production. However, the equipment can also be used according to known methods such as e.g. passing through an immersion bath, splashing or spraying e.g. in the form of aqueous dispersions, if appropriate, be applied immediately before the actual bitumen coating, provided that it is ensured that the dispersant is largely removed again before the actual coating.

Aus der großen Zahl bekannter flammhemmender Mittel bzw. Feuerlöschmittel, deren Wirkung auf der Ausbildung einer geschlossenen gegebenenfalls schaumartigen Schicht beruht sind die Produkte vorzugsweise einzusetzen, die bei dem Beschichten des Vliesstoffes, also beispielsweise dem Bituminieren, und natürlich auch beim Verlegen der Dachbahnen, also beispielsweise beim Schweißen der einzelnen Bahnen oder dem Aufflämmen noch keine Veränderung der so ausgerüsteten Dachbahn ergeben. Auf der anderen Seite muß vorzugsweise bei überschreiten des Schmelzpunktes des eingesetzten Fasermaterials des Vliesstoffes eine Reaktion des flammhemmenden Materials erwartet werden, die eine Ausbildung einer zusammenhängenden Haut oder Schicht auch bei einem Wegschmelzen der Fäden des Vliesstoffes sicherstellt. Wird diese Bedingung nicht eingehalten, so besteht die Gefahr, daß das flammhemmende Zusatzmittel mit dem geschmolzenen Polymermaterial des Vliesstoffes wegschmilzt und keine ausreichende Schutzwirkung mehr gegenüber den darunterliegenden Schichten ausüben kann.From the large number of known flame retardants or fire extinguishing agents, the effect of which is based on the formation of a closed, possibly foam-like layer, the products which are used when coating the nonwoven, for example bituminizing, and of course when laying the roofing membranes, for example, are to be used When welding the individual sheets or flaming up, there is still no change in the roofing sheet equipped in this way. On the other hand, if the melting point of the fiber material of the nonwoven used is exceeded, a reaction of the flame-retardant material must be expected, which ensures the formation of a coherent skin or layer even if the threads of the nonwoven melt away. If this condition is not met, there is a risk that the flame retardant additive will disappear with the melted polymer material of the nonwoven melts and can no longer provide sufficient protection against the underlying layers.

Bei Einsatz von flammhemmenden Mitteln, die eine derartige Verkrustung oder Sinterung in der Nähe der Schmelztemperatur des Polymermaterials des Vliesstoffes noch nicht aufweisen, ist durch Zusatz geeigneter Verbindungen, gegebenendas falls Harze und dergleichen dafür zu sorgen, daß flammhemmende Material an dem vorgesehenen Platz bei einem Brandfall fixiert ist.When using flame-retardant agents that do not yet have such incrustation or sintering in the vicinity of the melting temperature of the polymer material of the nonwoven fabric, the addition of suitable compounds, if necessary, should ensure that resins and the like ensure that the flame-retardant material is in place in the event of a fire is fixed.

Aufgrund des Schmelzens des Vliesstoffes in den Dachbahnen besteht ein erheblicher Unterschied zu den Bitumen-Wellplatten, gemäß der deutschen Offenlegungsschrift 26 55 038, bei denen die Versteifung durch nichtschmelzen- dej zur Verkohlung neigende Pappe erfolgt. Aus diesem Grunde sind dort offensichtlich auch brandhemmende Mittel geeignet, die ein "Ausblasen" der Flammen mit Hilfe von inerten Gasen bzw. ein Verlöschen durch Radikaleinfang bewirken. Derartige Mittel sind als flammhemmende Zusätze bei Vliesstoffverstärkten Dachbahnen ungeeignet, da sie ihre Wirkung nach dem Wegschmelzen des Fädenmaterials des Vliesstoffes nicht mehr an der gewünschten Stelle zeigen können.Due to the melting of the nonwoven fabric in the roofing membranes is a considerable difference compared to the bitumen-well plates, according to the German Offenlegungsschrift 26 55 038 in which the stiffener is carried out by de nichtschmelzen- j prone to charring cardboard. For this reason, there are obviously also fire-retardant agents which cause the flames to be “blown out” with the aid of inert gases or extinguished by trapping radicals. Such agents are unsuitable as flame-retardant additives for nonwoven-reinforced roofing membranes, since they can no longer show their effect at the desired location after the thread material of the nonwoven has melted away.

Im Brandfall soll sich bei hohen Temperaturen gemäß der Erfindung eine flächendeckende bevorzugt schaumartige Schicht ausbilden, die nicht durch gegebenenfalls wegschmelzende Vliesstoffschiehten abfließen kann, sondern ähnlich wie die Metallfolie gemäß dem Stand der Technik ein Ausbreiten des Feuers in die darunter befindlichen Vliesstoffschichten und Bitumenschichten sowie den weiteren Dachaufbau verhindert.In the event of a fire, a surface-covering, preferably foam-like layer should form at high temperatures in accordance with the invention, which cannot flow off through non-melting nonwoven layers, but, like the metal foil according to the prior art, spread the fire into the nonwoven layers and bitumen layers underneath as well as the others Roof structure prevented.

Claims (4)

1. Vliesstoff aus synthetischen Fasern oder Filamenten zur Herstellung von Dachbahnen durch Beschichtung mit schmelzbaren Beschichtungsmassen, dadurch gekennzeichnet, daß der Vliesstoff mit einer an sich bekannten flammhemmenden Ausrüstung versehen ist, die bei den Verarbeitungstemperaturen der Beschichtungsmasse und der Dachbahn sich noch inert verhält, bei höheren Temperaturen jedoch eine weitgehend geschlossene vorzugsweise schaumartige Schicht ausbildet.1. Nonwoven fabric made of synthetic fibers or filaments for the production of roofing membranes by coating with meltable coating compositions, characterized in that the nonwoven fabric is provided with a flame-retardant finish known per se, which is still inert at the processing temperatures of the coating composition and the roofing membrane, at higher temperatures However, temperatures forms a largely closed, preferably foam-like layer. 2. Vliesstoff nach Anspruch 1, dadurch gekennzeichnet, daß die flammhemmende Ausrüstung bei einem deutlichen Überschreiten der Schmelztemperatur der Filamente bzw. Fasern des Vliesstoffes bereits als Schicht so verfestigt ist, daß sie an ihrem Ort verbleibt, auch wenn die sie tragenden Fasern bzw. Filamente des Vliesstoffes wegschmelzen.2. Nonwoven fabric according to claim 1, characterized in that the flame retardant finish is already solidified as a layer when the melting temperature of the filaments or fibers of the nonwoven material is exceeded so that it remains in place even if the fibers or filaments carrying it melt away the nonwoven. 3. Vliesstoff nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Vliesstoff aus einem fadenbildenden Polyester besteht.3. Nonwoven fabric according to claim 1 or 2, characterized in that the nonwoven fabric consists of a thread-forming polyester. 4. Vliesstoff nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sich die flammhemmende Ausrüstung wenigstens bis etwa 220°C, vorzugsweise bis etwa 250°C inert verhält, bei Temperaturen über etwa 300°C jedoch bereits so verfestigt ist, daß sie auch ohne den Halt durch die Fasern oder Filamente des Vliesstoffes an ihrem Ort verbleibt.4. Nonwoven fabric according to one of the preceding claims, characterized in that the flame retardant finish is inert at least up to about 220 ° C, preferably up to about 250 ° C, but is already consolidated at temperatures above about 300 ° C so that it is without the hold by the fibers or filaments of the nonwoven remains in place.
EP19850105816 1984-05-19 1985-05-11 Non-woven fabric for making fire-resistant roofing material Withdrawn EP0162391A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843418790 DE3418790A1 (en) 1984-05-19 1984-05-19 Non-woven fabric for the manufacture of flame-retardant roofing sheets
DE3418790 1984-05-19

Publications (2)

Publication Number Publication Date
EP0162391A2 true EP0162391A2 (en) 1985-11-27
EP0162391A3 EP0162391A3 (en) 1986-06-25

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EP19850105816 Withdrawn EP0162391A3 (en) 1984-05-19 1985-05-11 Non-woven fabric for making fire-resistant roofing material

Country Status (7)

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US (1) US4683164A (en)
EP (1) EP0162391A3 (en)
JP (1) JPS60252782A (en)
DE (1) DE3418790A1 (en)
FI (1) FI851955L (en)
NO (1) NO851972L (en)
ZA (1) ZA853728B (en)

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DE9207367U1 (en) * 1992-05-30 1992-09-10 Johns Manville International, Inc., Denver, Col. Laminate made of fleece and scrim
DE29700754U1 (en) * 1997-01-16 1997-03-13 Grünzweig + Hartmann AG, 67059 Ludwigshafen Mineral wool roof insulation board for flat roofs
US6161296A (en) * 1998-12-21 2000-12-19 Davio; John Leon Thomas Joseph Alignment device for use in welding

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US3365322A (en) * 1964-04-28 1968-01-23 Bird & Son Intumescent, coated roofing granules and asphalt composition felt-base roofing containing the same
US3900625A (en) * 1973-03-26 1975-08-19 Griffolyn Company Inc Self-extinguishing composite laminate
US4079158A (en) * 1975-10-02 1978-03-14 Gulf Oil Canada Limited Asphalt impregnated felt building materials
FR2372927A1 (en) * 1976-12-04 1978-06-30 Kalk Chemische Fabrik Gmbh Flame resistant corrugated bituminous sheets for building industry - by treating cardboard with compsn. contg. flame retardants prior to impregnating with hot bitument
GB2000696A (en) * 1977-07-11 1979-01-17 Minnesota Mining & Mfg Intumescable fire retardant products
FR2547604A1 (en) * 1983-06-16 1984-12-21 Materiaux Etancheite Entrepris Self-protected sealing materials and process for their manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0881338A2 (en) * 1997-05-30 1998-12-02 Hoechst Trevira GmbH & Co. KG Flame retardant shingle
EP0881338A3 (en) * 1997-05-30 2001-10-10 Johns Manville International, Inc. Flame retardant shingle

Also Published As

Publication number Publication date
NO851972L (en) 1985-11-20
JPS60252782A (en) 1985-12-13
US4683164A (en) 1987-07-28
DE3418790A1 (en) 1985-11-21
FI851955L (en) 1985-11-20
ZA853728B (en) 1986-01-29
FI851955A0 (en) 1985-05-16
EP0162391A3 (en) 1986-06-25

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