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EP0964095B1 - Flame retardant lining material having improved adhesion - Google Patents

Flame retardant lining material having improved adhesion Download PDF

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Publication number
EP0964095B1
EP0964095B1 EP99110629A EP99110629A EP0964095B1 EP 0964095 B1 EP0964095 B1 EP 0964095B1 EP 99110629 A EP99110629 A EP 99110629A EP 99110629 A EP99110629 A EP 99110629A EP 0964095 B1 EP0964095 B1 EP 0964095B1
Authority
EP
European Patent Office
Prior art keywords
flame
flame retardant
lining material
textile fabric
retardant lining
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
EP99110629A
Other languages
German (de)
French (fr)
Other versions
EP0964095A2 (en
EP0964095A3 (en
Inventor
Bertrand Weiter
Monika Nagl
Peter Heidel
Hans-Jürgen Profé
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.)
Johns Manville
Original Assignee
Johns Manville International Inc
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Filing date
Publication date
Application filed by Johns Manville International Inc filed Critical Johns Manville International Inc
Publication of EP0964095A2 publication Critical patent/EP0964095A2/en
Publication of EP0964095A3 publication Critical patent/EP0964095A3/en
Application granted granted Critical
Publication of EP0964095B1 publication Critical patent/EP0964095B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • 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
    • E04D5/10—Roof covering by making use of flexible material, e.g. supplied in roll form by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2631—Coating or impregnation provides heat or fire protection
    • 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.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2631—Coating or impregnation provides heat or fire protection
    • Y10T442/2648—Coating or impregnation is specified as an intumescent material

Definitions

  • the present invention relates to a flame retardant carrier insert, especially for Bitumen membranes, which provide improved adhesion of the bitumen on the liner guaranteed.
  • a flame-retardant carrier insert is known, at least a textile fabric and at least one powdered flame retardant material and / or a powdered additive, wherein the flame retardant material and / or additive by means of a fusible polymer is attached, whose adhesive temperature below the Softening temperature of at least the load-bearing fibers of the textile fabric is.
  • bitumen is then later on the already covered with the flame retardant side applied to the textile fabric, so that in the resulting bituminous membranes, the Flame retardant layer between the bitumen and the textile fabric is arranged. This can lead to a reduction in the adhesion of the later applied bitumen layer come because these are not so good on the flame retardant sticks like directly on the textile fabric.
  • the object of the present invention is therefore to provide a flame retardant
  • a carrier insert which is a textile fabric with applied Flame retardant layer comprises and on which a later applied bituminous layer with adhering to the same or almost the same strength as on the textile fabric alone.
  • the object is achieved in that the fabric has a coverage between 30% and 90% of its surface area in the case of a medium, ie over the entire surface of the textile averaged order of flame retardants in the range of 20 to 100 g / m 2 , ie in that the flame retardant is applied only to partial areas of the surface, while the remaining partial areas of the surface of the textile fabric remain completely uncovered by the flame retardant.
  • textile fabric is to be understood in its broadest meaning. It can consequently all structures made of fibers, in particular of synthetic polymers, which have been produced by a surface-forming technique. Examples of such structures are woven, knitted fabrics and preferably scrims, knitted fabrics and nonwovens.
  • spunbonds preferred, which are produced by a Wirrablage freshly melt spun filaments. They consist of continuous synthetic fibers of fusible polymer materials.
  • suitable Polymeric materials are, for example, polyamides, e.g. Polyhexamethylene diadipamide, Poly-caprolactam, aromatic or partially aromatic polyamides ("aramids"), partially aromatic or wholly aromatic polyesters, polyphenylene sulfide (PPS), polymers with ether and Keto groups, e.g. Polyether ketones (PEK) and polyetheretherketone (PEEK), or Polybenzimidazoles.
  • the flame or fire protection material is applied in an amount of 20 to 100 g / m 2 on the top of the fabric of synthetic polymer fibers, wherein the application of the flame or fire protection material before, simultaneously or after the application of a fusible polymer, as Adhesive acts, can be done. Flame or fire protection materials which are activated only above the temperatures of 180 ° C. customary in bituminizing are particularly preferred.
  • the fusible polymer used as the adhesive has an adhesive temperature which is below the Softening temperature of at least the load-bearing fibers of the textile fabric is. If the fabric of synthetic polymer fibers a meltbond-strengthened nonwoven fabric, the softening temperatures of the fusible polymer and the binder fibers of the meltbinder-bonded nonwoven fabric as well be almost the same or even overlap.
  • the meltable polymer can be applied in the form of powders, granules, staple fibers, continuous fibers, film or as a textile fabric.
  • Suitable fusible polymers are thermoplastic polymers or resins.
  • Suitable thermoplastic polymers are polyolefins such as polypropylene, polyethylene, as well as polyamides and polybutylene terephthalate and modified polyethylene terephthalates - using aliphatic dicarboxylic acids or isophthalic acid.
  • the meltable polymer is applied in an amount of 5 to 120 g / m 2 , more preferably in an amount of 10 to 40 g / m 2, to the upper surface of the synthetic polymer fiber fabric.
  • the Duromers can condense.
  • Particularly preferred for the attachment of Flame retardant on the sheet are crosslinking resins such as e.g. Melamine-, Epoxy or phenolic resins or mixtures thereof.
  • adhesive temperature is meant the temperature at which the meltable polymer is the Base insert and the flame retardant and / or the additive wetted, so that a sufficient adhesion of the flame retardant and / or the additive on the carrier insert results and subsequent operations, such as winding or bituminizing, without detachment of the flame retardant and / or additive.
  • this is applied to the textile fabric Flame retardant a regular pattern.
  • Particularly preferred are as a pattern contiguous or completely separated polygons, e.g. Triangles, squares or diamonds.
  • the Flame retardants instead of an order in regular patterns also in the form of Be applied to company logos or lettering.
  • the flame retardant in the form of transverse, diagonal or arranged longitudinal strips are also in the form of transverse, diagonal or arranged longitudinal strips.
  • bitumen adhesion ensures that the flame retardant only parts of the surface covered by the textile area, totaling between 30% and 90%, while the remaining parts are uncovered and can provide increased bitumen adhesion.
  • this showed the bitumen adhesion on the textile fabric even then equal or almost equal to the bitumen adhesion on a with Flame retardant uncovered backing was when the fabric was 30% until 90% of its total surface was covered with flame retardant, being covered and uncovered portions preferably distributed over the entire surface regularly.
  • the partial covering of the surface according to the invention is preferably via the targeted Arrangement of the flame retardant in the form of a pattern achieved. Although that Flame retardant then no more contiguous surface areas covered, but instead the cover is interrupted by exposed surface areas, remains nevertheless adequate flame protection ensured.
  • Example 1 (Comparative Example )
  • the nonwoven fabric used was a needled and bonded with a chemical binder bonded filament nonwoven fabric made of polyester with a basis weight of 160 g / m 2 (trade name Trevira® Spunbond Type 033) intended as a support for Bitumendach- and geomembranes.
  • the infrared radiator was adjusted to a surface temperature of 150 ° C with a radiation pyrometer. After passing through the squeeze roller pair, the surface temperature was 35-45 ° C.
  • the coated carrier was on a conventional plant for the production of roofing Geomembranes processed with polymer modified bitumen. At the finished Dachund Geomembrane only a low bitumen adhesion could be determined.
  • Example 1 The experiment of Example 1 was repeated, except that the powder mixture made of expandable graphite and adhesive was spread in strips on the nonwoven fabric.
  • the coated strips had a width of 8 mm and uncoated graphite-free Strip a width of 4 mm.
  • the coated area was 67% of the total area.
  • the used powder was, as in Example 1, a mixture of an expandable graphite with a average particle size of 0.1 to 0.3 mm and the adhesive powder in a weight ratio of 1: 1.
  • the total area average of the mixture was 85 g / m 2 , ie 85 g was effectively distributed over 0.67 m 2 area, resulting in an application of 63 g / m 2 of flame retardant to the coated strips revealed. On the bitumen roofing membrane a satisfactory bitumen adhesion could be determined.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Fireproofing Substances (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Thermal Insulation (AREA)

Abstract

An improved bituminized flame-retardant textile material is provided that effectively overcomes bitumin adhesion difficulties associated with products of the prior art wherein the flame-retardant present on the surface of a textile support interfers with and hinders the achievement of bitumin adhesion. An anti-flame agent is applied in a quantity of 20 to 100 grams per square meter over 30 to 90 percent of the upper surface of the textile support. The remaining portions of the upper-surface of the textile support are free of the anti-flame agent. It surprisingly has been found that the surface portions of the textile support that are free of the anti-flame agent provide areas for the achievement of optimum bitumin adhesion with the textile support while still making possible entirely satisfactory flame retardancy for the overall product.

Description

Die vorliegende Erfindung betrifft eine flammhemmende Trägereinlage, besonders für Bitumenbahnen, die eine verbesserte Haftung des Bitumens auf der Trägereinlage gewährleistet.The present invention relates to a flame retardant carrier insert, especially for Bitumen membranes, which provide improved adhesion of the bitumen on the liner guaranteed.

Aus der DE-OS 195 20 314 ist eine flammhemmende Trägereinlage bekannt, die mindestens ein textiles Flächengebilde und mindestens ein pulverförmiges Flammschutzmaterial und/oder ein pulverförmiges Additiv umfaßt, wobei das Flammschutzmaterial und/oder Additiv mittels eines schmelzbaren Polymers befestigt ist, dessen Klebetemperatur unterhalb der Erweichungstemperatur zumindest der tragenden Fasern des textilen Flächengebildes liegt.From DE-OS 195 20 314 a flame-retardant carrier insert is known, at least a textile fabric and at least one powdered flame retardant material and / or a powdered additive, wherein the flame retardant material and / or additive by means of a fusible polymer is attached, whose adhesive temperature below the Softening temperature of at least the load-bearing fibers of the textile fabric is.

Der Bitumen wird dann später auf die bereits mit dem Flammschutzmaterial bedeckte Seite des textilen Flächengebildes aufgebracht, so daß bei den erhaltenen Bitumenbahnen die Flammschutzmaterialschicht zwischen dem Bitumen und dem textilen Flächengewebe angeordnet ist. Dadurch kann es zu einer Verringerung des Haftungsvermögens der später aufgebrachten Bitumenschicht kommen, da diese auf dem Flammschutzmittel nicht so gut haftet wie direkt auf dem textilen Flächengebilde.The bitumen is then later on the already covered with the flame retardant side applied to the textile fabric, so that in the resulting bituminous membranes, the Flame retardant layer between the bitumen and the textile fabric is arranged. This can lead to a reduction in the adhesion of the later applied bitumen layer come because these are not so good on the flame retardant sticks like directly on the textile fabric.

Die Aufgabe der vorliegenden Erfindung besteht daher darin, eine flammhemmende Trägereinlage zur Verfügung zu stellen, welche ein textiles Flächengewebe mit aufgebrachter Flammschutzschicht umfaßt und auf welcher eine später aufgetragene Bitumenschicht mit gleicher oder nahezu gleicher Festigkeit haften bleibt wie auf dem textilen Flächengebilde allein.The object of the present invention is therefore to provide a flame retardant To provide a carrier insert, which is a textile fabric with applied Flame retardant layer comprises and on which a later applied bituminous layer with adhering to the same or almost the same strength as on the textile fabric alone.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß das textile Flächengebilde bei einem mittleren, d.h. über die gesamte Oberfläche des textilen Flächengebildes gemittelten Auftrag an Flammschutzmittel im Bereich von 20 bis 100 g/m2 eine Bedeckung zwischen 30% und 90% seiner Oberfläche aufweist, d.h., daß das Flammschutzmittel nur auf Teilbereiche der Oberfläche aufgebracht ist, während die restlichen Teilbereiche der Oberfläche des textilen Flächengebildes von dem Flammschutzmittel gänzlich unbedeckt bleiben. According to the invention, the object is achieved in that the fabric has a coverage between 30% and 90% of its surface area in the case of a medium, ie over the entire surface of the textile averaged order of flame retardants in the range of 20 to 100 g / m 2 , ie in that the flame retardant is applied only to partial areas of the surface, while the remaining partial areas of the surface of the textile fabric remain completely uncovered by the flame retardant.

Der Begriff "textiles Flächengebilde" ist in seiner breitesten Bedeutung zu verstehen. Es kann sich mithin um alle Gebilde aus Fasern, insbesondere aus synthetischen Polymeren handeln, die nach einer flächenbildenden Technik hergestellt worden sind. Beispiele für solche Gebilde sind Gewebe, Gestricke und vorzugsweise Gelege, Gewirke und Vliese.The term "textile fabric" is to be understood in its broadest meaning. It can consequently all structures made of fibers, in particular of synthetic polymers, which have been produced by a surface-forming technique. Examples of such structures are woven, knitted fabrics and preferably scrims, knitted fabrics and nonwovens.

Von den Vliesen aus synthetischen Polymerfasern sind Spinnvliese, sog. Spunbonds, bevorzugt, die durch eine Wirrablage frisch schmelzgesponnener Filamente erzeugt werden. Sie bestehen aus Endlos-Synthesefasern aus schmelzbaren Polymermaterialien. Geeignete Polymermaterialien sind beispielsweise Polyamide, wie z.B. Polyhexamethylen-diadipamid, Poly-caprolactam, aromatische oder teilaromatische Polyamide ("Aramide"), teilaromatische oder vollaromatische Polyester, Polyphenylensulfid (PPS), Polymere mit Ether- und Ketogruppen, wie z.B. Polyetherketone (PEK) und Polyetheretherketon (PEEK), oder Polybenzimidazole.Of the webs of synthetic polymer fibers are spunbonded fabrics, so-called spunbonds, preferred, which are produced by a Wirrablage freshly melt spun filaments. They consist of continuous synthetic fibers of fusible polymer materials. suitable Polymeric materials are, for example, polyamides, e.g. Polyhexamethylene diadipamide, Poly-caprolactam, aromatic or partially aromatic polyamides ("aramids"), partially aromatic or wholly aromatic polyesters, polyphenylene sulfide (PPS), polymers with ether and Keto groups, e.g. Polyether ketones (PEK) and polyetheretherketone (PEEK), or Polybenzimidazoles.

Bei den verwendeten Flammschutzmaterialien handelt es sich um an sich im Stand der Technik bekannte intumeszierende und/oder gasentwickelnde Flammschutzmittel. Derartige Flamm- bzw. Flammschutzmaterialien sind oder enthalten insbesondere:

  • (i) Graphit, beispielsweise Sigraflex®, der unter Wärmeentwicklung expandiert und brandhemmende Gase freisetzt (Blähgraphit) und/oder
  • (ii) Phosphor-Stickstoff-Verbindungen, wie Ammoniumphosphate und -polyphosphate, die unter dem Handelsnamen Exolit® erhältlich sind, und/oder
  • (iii) Kohlenstoffspender enthaltende Zusammensetzungen, wie beispielsweise Stärke plus Pentaerythrit, gegebenenfalls plus Phosphor-Stickstoff-Verbindung(en), wie z.B. Dicyandiamid und/oder Diammoniumphosphat;
  • (iv) roter Phosphor, der in rieselfähiger Form vorliegt und gegebenenfalls Phosphate und Wachse enthält. Beispiele hierfür sind Handelsprodukte wie Hostaflam© RP 681, 682 und 683.
    • The flame retardant materials used are intumescent and / or gas-developing flame retardants which are known per se in the prior art. Such flame or flame retardant materials are or contain in particular:
  • (i) graphite, for example Sigraflex®, which expands with evolution of heat and releases fire-retardant gases (expandable graphite) and / or
  • (ii) phosphorus-nitrogen compounds, such as ammonium phosphates and polyphosphates, available under the trade name Exolit®, and / or
  • (iii) compositions containing carbon donors, such as starch plus pentaerythritol, optionally plus phosphorus-nitrogen compound (s), such as dicyandiamide and / or diammonium phosphate;
  • (iv) red phosphorus which is in free-flowing form and optionally contains phosphates and waxes. Examples include commercial products such as Hostaflam® RP 681, 682 and 683.

    • Vorzugsweise wird das Flamm- oder Brandschutzmaterial in einer Menge von 20 bis 100 g/m2 auf die Oberseite des textilen Flächengebildes aus synthetischen Polymerfasern aufgebracht, wobei das Aufbringen des Flamm- oder Brandschutzmaterials vor, gleichzeitig oder nach dem Aufbringen eines schmelzbaren Polymers, welches als Klebemittel fungiert, erfolgen kann. Besonders bevorzugt sind Flamm- oder Brandschutzmaterialien, welche erst oberhalb der beim Bituminieren üblichen Temperaturen von 180°C aktiviert werden.Preferably, the flame or fire protection material is applied in an amount of 20 to 100 g / m 2 on the top of the fabric of synthetic polymer fibers, wherein the application of the flame or fire protection material before, simultaneously or after the application of a fusible polymer, as Adhesive acts, can be done. Flame or fire protection materials which are activated only above the temperatures of 180 ° C. customary in bituminizing are particularly preferred.

    Das als Kleber verwendete schmelzbare Polymer besitzt eine Klebetemperatur, die unter der Erweichungstemperatur zumindest der tragenden Fasern des textilen Flächengebildes liegt. Falls das textile Flächengebilde aus synthetischen Polymerfasern ein schmelzbinderverfestigter Vliesstoff ist, können die Erweichungstemperaturen des schmelzbaren Polymers und der Bindefasern des schmelzbinderverfestigten Vliesstoffes auch nahezu gleich sein oder sogar überlappen.The fusible polymer used as the adhesive has an adhesive temperature which is below the Softening temperature of at least the load-bearing fibers of the textile fabric is. If the fabric of synthetic polymer fibers a meltbond-strengthened nonwoven fabric, the softening temperatures of the fusible polymer and the binder fibers of the meltbinder-bonded nonwoven fabric as well be almost the same or even overlap.

    Das schmelzbare Polymer kann in Form von Pulvern, Granulaten, Stapelfasern, Endlosfasern, Film oder als textiles Flächengebilde aufgebracht werden. Geeignete schmelzbare Polymere sind thermoplastische Polymere oder Harze. Als thermoplastische Polymere sind Polyolefine wie Polypropylen, Polyethylen, sowie Polyamide und Polybutylenterephthalat und modifizierte Polyethylenterephthalate - unter Verwendung von aliphatischen Dicarbonsäuren oder Isophthalsäure - geeignet. Vorzugsweise wird das schmelzbare Polymer in einer Menge von 5 bis 120 g/m2, besonders bevorzugt in einer Menge von 10 bis 40 g/m2 auf die Oberseite des textilen Flächengebildes aus synthetischen Polymerfasern aufgebracht.The meltable polymer can be applied in the form of powders, granules, staple fibers, continuous fibers, film or as a textile fabric. Suitable fusible polymers are thermoplastic polymers or resins. Suitable thermoplastic polymers are polyolefins such as polypropylene, polyethylene, as well as polyamides and polybutylene terephthalate and modified polyethylene terephthalates - using aliphatic dicarboxylic acids or isophthalic acid. Preferably, the meltable polymer is applied in an amount of 5 to 120 g / m 2 , more preferably in an amount of 10 to 40 g / m 2, to the upper surface of the synthetic polymer fiber fabric.

    Als Harze sind schmelzbare Duramin-Formaldehyd-Vorkondensate geeignet, die zu Duromeren kondensieren können. Besonders bevorzugt für die Befestigung des Flammschutzmittels auf dem Flächengebilde sind vernetzende Harze, wie z.B. Melamin-, Epoxid- oder Phenolharze oder deren Gemische.As resins fusible Duramin-formaldehyde precondensates are suitable, the Duromers can condense. Particularly preferred for the attachment of Flame retardant on the sheet are crosslinking resins such as e.g. Melamine-, Epoxy or phenolic resins or mixtures thereof.

    Anschließend wird das mit dem Flammschutzmaterial und/oder Additiv und dem schmelzbaren Polymer beladene textile Flächengebilde aus synthetischen Polymerfasern mittels Wärmeentwicklung und/oder Druck bis zur Klebetemperatur des schmelzbaren Polymers behandelt, so daß das Flammschutzmaterial und/oder das Additiv auf der Oberseite des textilen Flächengebildes aus synthetischen Polymerfasern anhaftet.Subsequently, with the flame retardant and / or additive and the meltable polymer-loaded textile fabrics of synthetic polymer fibers by means of heat development and / or pressure up to the adhesive temperature of the fusible Polymers treated so that the flame retardant material and / or the additive on the top of the textile fabric of synthetic polymer fibers adheres.

    Unter Klebetemperatur wird die Temperatur verstanden, bei der das schmelzbare Polymer die Trägereinlage und das Flammschutzmittel und/oder das Additiv benetzt, so daß eine ausreichende Haftung des Flammschutzmittels und/oder des Additivs auf der Trägereinlage resultiert und nachfolgende Operationen, wie Aufwickeln bzw. Bituminieren, ohne Ablösung des Flammschutzmittels und/oder Additivs erfolgen.By adhesive temperature is meant the temperature at which the meltable polymer is the Base insert and the flame retardant and / or the additive wetted, so that a sufficient adhesion of the flame retardant and / or the additive on the carrier insert results and subsequent operations, such as winding or bituminizing, without detachment of the flame retardant and / or additive.

    In einer bevorzugten Ausführungsform bildet das auf das textile Flächengebilde aufgebrachte Flammschutzmittel ein regelmäßiges Muster. Besonders bevorzugt sind dabei als Muster zusammenhängende oder vollständig voneinander getrennt vorliegende Vielecke, wie z.B. Dreiecke, Quadrate oder Rauten. In einer anderen bevorzugten Ausführungsform kann das Flammschutzmittel anstelle eines Auftrags in regelmäßigen Mustern auch in Form von Firmenlogos oder Schriftzügen aufgetragen sein. In einer weiteren bevorzugten Ausführungsform schließlich ist das Flammschutzmittel in Form von quer, diagonal oder längs verlaufenden Streifen angeordnet.In a preferred embodiment, this is applied to the textile fabric Flame retardant a regular pattern. Particularly preferred are as a pattern contiguous or completely separated polygons, e.g. Triangles, squares or diamonds. In another preferred embodiment, the Flame retardants instead of an order in regular patterns also in the form of Be applied to company logos or lettering. In a further preferred Embodiment, finally, the flame retardant in the form of transverse, diagonal or arranged longitudinal strips.

    Die gegenüber dem Stand der Technik wesentlich erhöhte Bitumenhaftung wird erfindungsgemäß dadurch gewährleistet, daß das Flammschutzmittel nur Teile der Oberfläche des textilen Flächengbildes bedeckt, insgesamt zwischen 30% und 90%, während die restlichen Teile unbedeckt sind und für die erhöhte Bitumenhaftung sorgen können. Überraschenderweise zeigte sich, das die Bitumenhaftung auf dem textilen Flächengebilde selbst dann noch gleich oder nahezu gleich der Bitumenhaftung auf einer mit Flammschutzmittel unbedeckten Trägereinlage war, wenn das textile Flächengebilde zu 30% bis 90% seiner gesamten Oberfläche mit Flammschutzmittel bedeckt war, wobei bedeckte und unbedeckte Teilbereiche vorzugsweise über die gesamte Fläche regelmäßig verteilt vorliegen.The over the prior art significantly increased bitumen adhesion is according to the invention ensures that the flame retardant only parts of the surface covered by the textile area, totaling between 30% and 90%, while the remaining parts are uncovered and can provide increased bitumen adhesion. Surprisingly, this showed the bitumen adhesion on the textile fabric even then equal or almost equal to the bitumen adhesion on a with Flame retardant uncovered backing was when the fabric was 30% until 90% of its total surface was covered with flame retardant, being covered and uncovered portions preferably distributed over the entire surface regularly.

    Die erfindungsgemäße Teilbedeckung der Oberfläche wird vorzugsweise über die gezielte Anordnung des Flammschutzmittels in Form eines Musters erreicht. Obwohl das Flammschutzmittel dann keine zusammenhängenden Flächenbereiche mehr bedeckt, sondern die Bedeckung durch freiliegende Flächenbereiche unterbrochen ist, bleibt dennoch ein hinreichender Flammschutz gewährleistet.The partial covering of the surface according to the invention is preferably via the targeted Arrangement of the flame retardant in the form of a pattern achieved. Although that Flame retardant then no more contiguous surface areas covered, but instead the cover is interrupted by exposed surface areas, remains nevertheless adequate flame protection ensured.

    Die Erfindung wird nun anhand der nachfolgenden Beispiele näher erläutert. The invention will now be explained in more detail with reference to the following examples.

    Beispiel 1: (Vergleichsbeispiel) Example 1: (Comparative Example )

    Auf einer 1 m breiten Beschichtungsanlage, bestehend aus Pulverstreuer, Infrarotstrahler und zwei wassergekühlten, übereinanderliegenden Andruckwalzen wurde ein Polyesterfilamentvliesstoff ganzflächig homogen mit einem Gemisch (Gewichtsverhältnis 1:1) aus Blähgraphit-Pulver mit einer mittleren Korngröße von 0,1 bis 0,3 mm und einem mittels einer epoxidhaltigen organischen Verbindung modifizierten Klebepulver aus Phenol-Novolak bestreut.On a 1 m wide coating system, consisting of powder spreader, infrared radiator and two water-cooled, superimposed pinch rollers became one Polyester filament nonwoven fabric over the entire surface homogeneously with a mixture (weight ratio 1: 1) of expanded graphite powder having a mean particle size of 0.1 to 0.3 mm and a by means of an epoxy-containing organic compound modified adhesive powder of phenol novolac sprinkled.

    Der verwendete Vliesstoff war ein als Träger für Bitumendach- und Dichtungsbahnen vorgesehener vernadelter und mit einem chemischen Bindemittel verfestigter Filamentvliesstoff aus Polyester mit einem Flächengewicht von 160 g/m2 (Handelsname Trevira® Spunbond Type 033).The nonwoven fabric used was a needled and bonded with a chemical binder bonded filament nonwoven fabric made of polyester with a basis weight of 160 g / m 2 (trade name Trevira® Spunbond Type 033) intended as a support for Bitumendach- and geomembranes.

    Auf den Vliesstoff wurden 85 g/m2 Pulvergemisch aufgetragen. Der Infrarotstrahler wurde mit einem Strahlungspyrometer auf eine Oberflächentemperatur von 150°C eingestellt. Nach Durchgang durch das Quetschwalzenpaar betrug die Oberflächentemperatur 35-45°C.On the nonwoven 85 g / m 2 powder mixture were applied. The infrared radiator was adjusted to a surface temperature of 150 ° C with a radiation pyrometer. After passing through the squeeze roller pair, the surface temperature was 35-45 ° C.

    Der beschichtete Träger wurde auf einer konventionellen Anlage zur Herstellung von Dachund Dichtungsbahnen mit polymermodifiziertem Bitumen verarbeitet. An der fertigen Dachund Dichtungsbahn konnte nur eine niedrige Bitumenhaftung festgestellt werden.The coated carrier was on a conventional plant for the production of roofing Geomembranes processed with polymer modified bitumen. At the finished Dachund Geomembrane only a low bitumen adhesion could be determined.

    Beispiel 2:Example 2:

    Der Versuch gemäß Beispiel 1 wurde wiederholt, mit der Ausnahme, daß das Pulvergemisch aus Blähgraphit und Klebemittel streifenförmig auf dem Vliesstoff aufgestreut wurde. Die beschichteten Streifen hatten eine Breite von 8 mm und die nicht beschichteten Graphit-freien Streifen eine Breite von 4 mm. Die beschichtete Fläche betrug 67% der Gesamtfläche. Das verwendete Pulver war, wie in Beispiel 1, ein Gemisch aus einem Blähgraphit mit einer mittleren Korngröße von 0,1 bis 0,3 mm und dem Klebepulver im Gewichtsverhältnis 1:1. The experiment of Example 1 was repeated, except that the powder mixture made of expandable graphite and adhesive was spread in strips on the nonwoven fabric. The coated strips had a width of 8 mm and uncoated graphite-free Strip a width of 4 mm. The coated area was 67% of the total area. The used powder was, as in Example 1, a mixture of an expandable graphite with a average particle size of 0.1 to 0.3 mm and the adhesive powder in a weight ratio of 1: 1.

    Der über die gesamte Fläche gemittelte Auftrag für das Gemisch betrug 85 g/m2, d.h. 85 g verteilten sich auf effektiv auf eine Fläche con 0,67 m2 , woraus sich für die beschichteten Streifen ein Auftrag von 63 g/m2 für das Flammschutzmittel ergab. An der bituminierten Dachbahn konnte eine zufriedenstellende Bitumenhaftung festgestellt werden.The total area average of the mixture was 85 g / m 2 , ie 85 g was effectively distributed over 0.67 m 2 area, resulting in an application of 63 g / m 2 of flame retardant to the coated strips revealed. On the bitumen roofing membrane a satisfactory bitumen adhesion could be determined.

    Claims (6)

    1. Flame retardant lining material, particularly for bitumen membranes, comprising a textile fabric having an applied flame-proofing medium fastened thereto by means of a fusible polymer, characterised in that the mean deposit of flame-proofing medium is in the range from 20 to 100 g/m2 and the flame-proofing medium covers between 30% and 90% of the surface of the textile fabric, the flame-proofing medium being applied only to part-areas of the fabric and the remaining part-areas being entirely uncovered.
    2. Flame retardant lining material according to claim 1, characterised in that the covering of flame-proofing medium on the textile fabric forms a regular pattern.
    3. Flame retardant lining material according to claims 1 and 2, characterised in that the covering of flame-proofing medium on the textile fabric is laid out in the form of polygons, preferably triangles, squares or rhombuses, which are connected or entirely separate from one another.
    4. Flame retardant lining material according to claims 1 and 2, characterised in that the covering of flame-proofing medium on the textile fabric is laid out in the form of strips extending transversely, diagonally or longitudinally.
    5. Flame retardant lining material according to claim 1, characterised in that the covering of flame-proofing medium on the textile fabric is laid out in the form of lettering, company logos.
    6. Membrane coated with bitumen, containing a flame retardant lining material according to one of claims 1 to 5.
    EP99110629A 1998-06-08 1999-06-02 Flame retardant lining material having improved adhesion Expired - Lifetime EP0964095B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19825497A DE19825497C1 (en) 1998-06-08 1998-06-08 Fire=resistant supporting interlayer, e.g. for bitumen roofing strip
    DE19825497 1998-06-08

    Publications (3)

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    EP0964095A2 EP0964095A2 (en) 1999-12-15
    EP0964095A3 EP0964095A3 (en) 2001-10-10
    EP0964095B1 true EP0964095B1 (en) 2005-01-26

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    EP (1) EP0964095B1 (en)
    JP (1) JP2000119969A (en)
    AT (1) ATE287983T1 (en)
    DE (2) DE19825497C1 (en)
    DK (1) DK0964095T3 (en)
    NO (1) NO315714B1 (en)

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    Also Published As

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    US6197707B1 (en) 2001-03-06
    EP0964095A2 (en) 1999-12-15
    EP0964095A3 (en) 2001-10-10
    NO315714B1 (en) 2003-10-13
    NO992643D0 (en) 1999-06-01
    DE59911512D1 (en) 2005-03-03
    DK0964095T3 (en) 2005-02-28
    ATE287983T1 (en) 2005-02-15
    DE19825497C1 (en) 1999-06-24
    NO992643L (en) 1999-12-09
    JP2000119969A (en) 2000-04-25

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