EP0271727B1 - Bituminous roofing sheet and its manufacturing method - Google Patents

Bituminous roofing sheet and its manufacturing method Download PDF

Info

Publication number
EP0271727B1
EP0271727B1 EP87116941A EP87116941A EP0271727B1 EP 0271727 B1 EP0271727 B1 EP 0271727B1 EP 87116941 A EP87116941 A EP 87116941A EP 87116941 A EP87116941 A EP 87116941A EP 0271727 B1 EP0271727 B1 EP 0271727B1
Authority
EP
European Patent Office
Prior art keywords
bitumen
projections
fleece
roofing sheet
upper side
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
Application number
EP87116941A
Other languages
German (de)
French (fr)
Other versions
EP0271727A1 (en
Inventor
Gerhard Bauder
Hanns-Jörg Mauk
Michael Dipper
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.)
Paul Bauder & Co GmbH
Original Assignee
Paul Bauder & Co GmbH
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 Paul Bauder & Co GmbH filed Critical Paul Bauder & Co GmbH
Priority to AT87116941T priority Critical patent/ATE47188T1/en
Publication of EP0271727A1 publication Critical patent/EP0271727A1/en
Application granted granted Critical
Publication of EP0271727B1 publication Critical patent/EP0271727B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/10Roof 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
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/12Roof covering by making use of flexible material, e.g. supplied in roll form specially modified, e.g. perforated, with granulated surface, with attached pads

Definitions

  • the invention relates to a bituminous roofing membrane with a carrier insert coated on both sides with bitumen and a plastic fleece applied to the top.
  • roofing membranes hereinafter referred to briefly as roofing membranes, usually consist of a carrier insert coated on both sides with bitumen, which is provided with mineral scattering on the top and on the underside.
  • bitumen which is provided with mineral scattering on the top and on the underside.
  • roofing membranes are only partially non-slip and pose a safety risk when the roof area has to be walked on.
  • roofing membranes which are laminated on one side with a relatively thick and heavy plastic fleece as a mechanical protective layer; the plastic nonwovens have weights in the range of 200 to 500 g / m 2 .
  • bituminous sealing sheets on their top or bottom with elevations or depressions.
  • bitumen which is used as a covering layer for the waterproofing membrane, is subjected to a very strong cold flow.
  • the depressions or ridges embossed into the surface of the bituminous surface flow together within a few months and even out.
  • bitumen compositions which, at the temperatures occurring on the roof, for example at temperatures up to 80 ° C., have no flow over a long period of time; these masses are mixtures of bitumen, fillers, plastic additives and in particular fiber materials.
  • highly reinforced bitumen materials cannot be produced on conventional systems for producing roofing membranes, since the viscosity of these materials is too high for processing on these roofing membrane systems.
  • bituminous roofing membrane of the type described at the outset in that the bitumen coating is structured on the top to form bead-like or knob-shaped projections and that the applied plastic fleece is embedded in the bitumen coating in the region of the projections while it is embedded in the The area between the projections essentially rests on the bitumen layer.
  • the plastic fleece is a polypropylene or polyester fleece with a basis weight of 10 to 50 g / m 2 . It is therefore a very thin fleece, which can follow the structure of the bitumen surface, so that the structure of the bitumen top can also be seen through the thin plastic fleece.
  • the projections can preferably have a height of 0.1 to 1 mm and a width of 1 to 5 mm. It is advantageous if the projections extend in the form of ribs or bulges essentially in the longitudinal direction of the web.
  • At least 10 projections can be provided over a web width of 10 cm.
  • the thickness of the plastic fleece is less than the height of the projections.
  • the invention is furthermore based on the object of specifying a method for producing a non-slip roofing membrane, in which the support insert is coated on both sides with heated and therefore flowable bitumen and the roofing membrane is cooled.
  • the drawing shows a schematic sectional view through a roofing membrane with a structured top and with a plastic fleece applied on the top to stabilize the surface structure.
  • the roofing membrane shown in the drawing comprises a carrier insert 1, which is designed, for example, as a glass fleece, glass fabric, plastic fleece, plastic fabric or plastic film, as is usual with roofing membranes per se.
  • This carrier insert 1 is provided on both sides with a bitumen coating 2 or 3.
  • the coating materials used for this correspond to those conventionally used for roofing membranes, for example one of the bitumen materials specified below can be used:
  • bitumen B 808% by weight of bitumen B 200 12% by weight of styrene butadiene / styrene rubber
  • bitumen B 200 15 weight percent atactic polypropylene 20 weight percent limestone powder.
  • the carrier insert 1 is coated on both sides with the bitumen mass on a conventional system for producing roofing membranes, the bitumen mass being heated for this purpose to such an extent that it is readily flowable.
  • the top of the bitumen coating 3 is profiled, for example by means of suitable profile rollers.
  • beaded or nub-shaped projections 4 are formed in the surface, which rise, for example, 0.1 to 1 mm above the top of the bitumen coating 3.
  • these projections can run essentially parallel to the web direction; it is advantageous if at least 10 such beads come per 10 cm web width.
  • a thin plastic fleece 5 is placed on this structured surface, for example a polypropylene fleece or a polyester fleece with weights per unit area of 10 to 50 g / m 2 .
  • This fleece has a thickness which is preferably less than the thickness of the projections.
  • the plastic fleece 5 initially sinks into the still flowable bitumen mass of the bitumen coating 3 in the area of the projections 4, while it is still held at a distance from the top of the bitumen coating 2 between the projections 4 by the projections 4. By sinking the plastic fleece 5 into the projections 4, they are reinforced and thus stabilized, particularly in their near-surface area, so that the tendency of the bitumen to flow together and thus to level the structuring is reduced considerably.
  • the roofing membrane is cooled in a conventional manner, the profiling of the surface stabilized by the plastic fleece 5 being "frozen” so that it is retained.
  • the plastic fleece is embedded in the bitumen mass in the area of the projections 4, preferably in the surface area, while the plastic fleece in the intermediate, deeper areas lies essentially on the bitumen layer or at most slightly dips into it.
  • the arrangement of the plastic fleece 5 is shown very schematically, in fact the fleece will not adhere to the profiled surface of the bitumen mass as precisely as is shown in the drawing.
  • the surface of the roofing membrane shows areas next to one another, which essentially consist of plastic-reinforced bitumen or of a plastic fleece that is only slightly bound to the underlying bitumen layer and is otherwise completely exposed. This significantly increases the overall slip resistance of such a web. It is particularly advantageous in this construction that the profile structure of the surface is retained even if the bitumen mass is softened by increasing the temperature, since the plastic reinforcement in the area of the projections leads to an increase in viscosity overall and thus counteracts a flow of the projections.
  • the plastic fleece is so thin that it adapts to the structure of the profiled bitumen surface and enables the bitumen in the area the projections penetrate the fleece to such an extent that fiber-reinforced bitumen regions emerge on the surface, which are separated from one another by the intermediate regions of the plastic fleece that do not escape into the bitumen.

Abstract

1. Bituminous roofing sheet with a supporting inlay (1) coated on both sides with bitumen (2, 3) and with a synthetic fleece (5) applied on the upper side, characterized in that the bitumen coating (3) is structured on the upper side to form beaded or burl-shaped projections (4), and that the applied synthetic fleece (5) in the region of the projections (4) is embedded in the bitumen coating (3), whilst in the region between the projections (4) it lies substantially on the bitumen coating (3).

Description

Die Erfindung betrifft eine bituminöse Dachbahn mit einer beidseitig mit Bitumen beschichteten Trägereinlage und einem auf der Oberseite aufgebrachten Kunststoff-Vlies.The invention relates to a bituminous roofing membrane with a carrier insert coated on both sides with bitumen and a plastic fleece applied to the top.

Bituminöse Dachabdichtungsbahnen, im folgenden kurz als Dachbahnen bezeichnet, bestehen üblicherweise aus einer beidseitig mit Bitumen beschichteten Trägereinlage, die auf der Oberseite und auf der Unterseite mit einer mineralischen Abstreuung versehen ist. Auf geneigten Dächern mit einer Holzschalung sind derartige Dachbahnen jedoch nur bedingt rutschsicher und stellen bei der notwendigen Begehung der Dachfläche ein Sicherheitsrisiko dar.Bituminous roofing membranes, hereinafter referred to briefly as roofing membranes, usually consist of a carrier insert coated on both sides with bitumen, which is provided with mineral scattering on the top and on the underside. On sloping roofs with wooden formwork, however, such roofing membranes are only partially non-slip and pose a safety risk when the roof area has to be walked on.

Es sind Dachbahnen bekannt, die einseitig mit einm relativ dicken und schweren Kunststoff-Vlies als mechanischer Schutzschicht kaschiert sind; die Kunststoff-Vliese weisen dabei Flächengewichte in der Größenordnung von 200 bis 500 g/m2 auf.Roofing membranes are known which are laminated on one side with a relatively thick and heavy plastic fleece as a mechanical protective layer; the plastic nonwovens have weights in the range of 200 to 500 g / m 2 .

Es ist weiterhin bekannt, bituminöse Abdichtungsbahnen auf ihrer Ober- oder Unterseite mit Erhebungen oder Vertiefungen zu versehen. Es hat sich jedoch als nachteilig herausgestellt, daß das Bitumen, welches als Deckschicht für die Abdichtungsbahn Verwendung findet, einem sehr starken kalten Fluß unterworfen ist. Bei den auf einem Dach vorkommenden Temperaturen fließen die in die Oberfläche bituminösen Dachbahn eingeprägten Vertiefungen oder Erhöhungen innerhalb weniger Monate zusammen und gleichen sich aus.It is also known to provide bituminous sealing sheets on their top or bottom with elevations or depressions. However, it has been found to be disadvantageous that the bitumen, which is used as a covering layer for the waterproofing membrane, is subjected to a very strong cold flow. At the temperatures occurring on a roof, the depressions or ridges embossed into the surface of the bituminous surface flow together within a few months and even out.

Es ist weiterhin auch bekannt, hochstandfeste Bitumenmassen herzustellen, die bei den auf dem Dach vorkommenden Temperaturen, zum Beispiel bei Temperaturen bis 80°C, auch über längere Zeit keinen Fluß aufweisen; diese Massen sind Mischungen aus Bitumen, Füllstoffen, Kunstoff-Zusätzen und insbesondere Faserstoffen. Solche hocharmierten Bitumenmassen lassen sich jedoch auf konventionellen Anlagen zur Dachbahnenerzeugung nicht herstellen, da die Viskosität dieser Massen für die Verarbeitung auf diesen Dachbahnenanlagen zu hoch ist.It is furthermore also known to produce high-strength bitumen compositions which, at the temperatures occurring on the roof, for example at temperatures up to 80 ° C., have no flow over a long period of time; these masses are mixtures of bitumen, fillers, plastic additives and in particular fiber materials. However, such highly reinforced bitumen materials cannot be produced on conventional systems for producing roofing membranes, since the viscosity of these materials is too high for processing on these roofing membrane systems.

Es ist Aufgabe der Erfindung, eine rutschsichere bituminöse Dachbahn vorzuschlagen, die auf herkömmlichen Anlagen hergestellt werden kann und die ihre Rutschfestigkeit auch über längere Zeit beibehält.It is an object of the invention to propose a non-slip bituminous roofing membrane which can be produced on conventional systems and which maintains its slip resistance even over a long period.

Diese Aufgabe wird bei einer bituminösen Dachbahn der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß die Bitumenbeschichtung auf der Oberseite unter Ausbildung wulst-oder noppenförmiger Vorsprünge strukturiert ist und daß das aufgebrachte Kunststoff-Vlies im Bereich der Vorsprünge in die Bitumenbeschichtung eingebettet ist, während es im Bereich zwischen den Vorsprüngen im wesentlichen auf der Bitumenschicht aufliegt.This object is achieved according to the invention in a bituminous roofing membrane of the type described at the outset in that the bitumen coating is structured on the top to form bead-like or knob-shaped projections and that the applied plastic fleece is embedded in the bitumen coating in the region of the projections while it is embedded in the The area between the projections essentially rests on the bitumen layer.

Es hat sich überraschenderweise herausgestellt, daß eine solche Einbettung eines Kunststoff-Viieses nur im Bereich der wulst- oder noppenförmigen Vorsprünge der Bitumenschicht diese Vorsprünge soweit stabilisiert, daß sie dauerhaft erhalten bleiben, auch bei den hohen auf Dachoberflächen auftretenden Temperaturen. Die Rutschfestigkeit einer solchen Dachbahn wird erheblich dadurch erhöht, daß auf der Oberseite der Dachbahn nebeneinander Bereiche vorliegen, in denen das Kunststoff- Vlies mehr oder weniger frei auf der Oberfläche des Bitumens aufliegt beziehungsweise in denen das Bitumen in das Vlies soweit eindringt, daß das Bitumen bis zur Oberseite des Vlieses gelangt. Diese abwechselnde Strukturierung erhöht die Rutschfestigkeit besonders, wobei die wellige Struktur der Bitumenoberseite durch das Vlies auch über eine sehr lange Zeit stabilisiert und fixiert wird.It has surprisingly been found that such embedding of a plastic fleece stabilizes these projections only in the region of the bead-like or knob-shaped projections of the bitumen layer to such an extent that they are permanently retained, even at the high temperatures occurring on roof surfaces. The slip resistance of such a roofing membrane is considerably increased by the fact that, on the top of the roofing membrane, there are areas in which the plastic fleece lies more or less freely on the surface of the bitumen or in which the bitumen penetrates into the fleece to such an extent that the bitumen reaches the top of the fleece. This alternating structuring increases the slip resistance in particular, whereby the wavy structure of the bitumen top is stabilized and fixed by the fleece for a very long time.

Günstig ist es, wenn das Kunststoff-Vlies ein Polypropylen- oder Polyester-Vlies mit einem Flächengewicht von 10 bis 50 g/m2 ist. Es handelt sich somit um ein sehr dünnes Vlies, welches der Struktur der Bitumenoberfläche folgen kann, so daß sich die Struktur der Bitumenoberseite auch durch das dünne Kunststoff-Vlies hindurch zeigt.It is favorable if the plastic fleece is a polypropylene or polyester fleece with a basis weight of 10 to 50 g / m 2 . It is therefore a very thin fleece, which can follow the structure of the bitumen surface, so that the structure of the bitumen top can also be seen through the thin plastic fleece.

Die Vorsprünge können vorzugsweise eine Höhe von 0,1 bis 1 mm und eine Breite von 1 bis 5 mm aufweisen. Es ist dabei vorteilhaft, wenn die Vorsprünge sich rippen- oder wulstförmig im wesentlichen in Bahnlängsrichtung erstrecken.The projections can preferably have a height of 0.1 to 1 mm and a width of 1 to 5 mm. It is advantageous if the projections extend in the form of ribs or bulges essentially in the longitudinal direction of the web.

Beispielsweise können auf eine Bahnbreite von 10 cm mindestens 10 Vorsprünge vorgesehen sein.For example, at least 10 projections can be provided over a web width of 10 cm.

Bei einer bevorzugten Ausführungsform ist vorgesehen, daß die Dicke des Kunststoff-Vlieses geringer ist als die Höhe der Vorsprünge.In a preferred embodiment it is provided that the thickness of the plastic fleece is less than the height of the projections.

Der Erfindung liegt weiterhin die Aufgabe zugrunde, ein Verfahren zur Herstellung einer rutschsicheren Dachbahn anzugeben, bei dem man die Trägereinlage beidseitig mit erhitztem und dadurch fließfähigem Bitumen beschichtet und die Dachbahn abkühlt.The invention is furthermore based on the object of specifying a method for producing a non-slip roofing membrane, in which the support insert is coated on both sides with heated and therefore flowable bitumen and the roofing membrane is cooled.

Diese Aufgabe wird bei dem genannten Verfahren erfindungsgemäß dadurch gelöst, daß man vor dem Abkühlen die Oberseite der oberen Bitumenschicht zur Erzeugung der Vorsprünge strukturiert, auf die strukturierte Oberseite des noch fließfähigen Bitumens einen Kunststoff-Vlies auflegt und daß man die Dachbahn abkühlt, sobald das Kunststoff-Vlies im Bereich der Vorsprünge, aber noch nicht dazwischen ins Bitumen eingetaucht ist.This object is achieved according to the invention in that, before cooling, the top of the upper bitumen layer is structured to produce the projections, a plastic fleece is placed on the structured top of the still flowable bitumen and the roofing membrane is cooled as soon as the plastic - Fleece in the area of the projections, but not yet immersed in the bitumen.

Obwohl ein Hauptproblem der Strukturierung einer Bitumenoberseite darin liegt, daß die Struktur verfließt, wird bei dem erfindungsgemäßen Verfahren trotzdem die Struktur in einem Augenblick in die Oberseite der Bitumenschicht eingebracht, in dem das Bitumen noch fließfähig ist. Dadurch, daß unmittelbar nach dem Aufbringen der Struktur, also der Ausbildung der wulst- oder rippenförmigen Vorsprünge, ein dünnes Kunststoff-Vlies auf die strukturierte Oberfläche des noch fließfähigen Bitumens aufgelegt wird, ergibt sich eine Stabilisierung der Struktur der Bitumenoberfläche, die wahrscheinlich hauptsächlich darauf beruht, daß das Kunststoff- Vlies zunächst im Bereich der Vorsprünge in die Bitumenmasse eintaucht und damit die Vorsprünge im Bereich ihrer Außenfläche armiert. Dadurch wird die Außenhaut gerade der Vorsprünge stabilisert, so daß beim nachfolgenden Abkühlen die Au- βenstruktur des Bitumens erhalten bleibt. Dieses Verfahren ermöglicht es, zur Herstellung der Dachbahn relativ fließfähiges Bitumen zu verwenden, wie es üblicherweise auf Dachbahnenanlagen eingesetzt wird, es ist also nicht notwendig, zur Erhaltung der Oberflächenstruktur besonders vorarmierte Bitumenmassens zu verwenden, die auf den herkömmlichen Dachbahnenlagen nicht mehr verarbeitet werden könnten.Although a main problem with the structuring of a bitumen top is that the structure flows, in the method according to the invention the structure is nevertheless introduced into the top of the bitumen layer in an instant in which the bitumen is still flowable. The fact that a thin plastic fleece is placed on the structured surface of the still flowable bitumen immediately after application of the structure, i.e. the formation of the bead-shaped or rib-shaped projections, results in a stabilization of the structure of the bitumen surface, which is probably mainly based on it that the plastic fleece first immerses in the area of the projections in the bitumen mass and thus reinforces the projections in the area of its outer surface. As a result, the outer skin of the projections is stabilized so that the outer structure of the bitumen is retained during the subsequent cooling. This process makes it possible to use relatively flowable bitumen to produce the roofing membrane, as it is usually used on roofing membrane systems, it is therefore not necessary to use specially pre-armed bitumen materials to maintain the surface structure, which could no longer be processed on conventional roofing membrane layers.

Die nachfolgende Beschreibung einer bevorzugten Ausführungsform der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Die Zeichnung zeigt eine schematische Schnittansicht durch eine Dachbahn mit strukturierter Oberseite und mit einem auf der Oberseite aufgebrachten Kunststoff-Vlies zur Stabilisierung der Oberflächenstruktur.The following description of a preferred embodiment of the invention serves in conjunction with the drawing for a more detailed explanation. The drawing shows a schematic sectional view through a roofing membrane with a structured top and with a plastic fleece applied on the top to stabilize the surface structure.

Die in der Zeichnung dargestellte Dachbahn umfaßt eine Trägereinlage 1, die beispielsweise als Glasvlies, Glasgewebe, Kunststoff-Vlies, Kunststoff-Gewebe oder Kunststoff-Folie ausgebildet ist, wie dies bei Dachbahnen an sich üblich ist. Diese Trägereinlage 1 ist beidseitig mit einer Bitumenbeschichtung 2 beziehungsweise 3 versehen. Die dafür verwendeten Beschichtungsmassen entsprechen denen, die herkömmlich für Dachbahnen verwendet werden, beispielsweise kann eine der nachfolgend angegebenen Bitumenmassen verwendet werden:The roofing membrane shown in the drawing comprises a carrier insert 1, which is designed, for example, as a glass fleece, glass fabric, plastic fleece, plastic fabric or plastic film, as is usual with roofing membranes per se. This carrier insert 1 is provided on both sides with a bitumen coating 2 or 3. The coating materials used for this correspond to those conventionally used for roofing membranes, for example one of the bitumen materials specified below can be used:

Rezeptur 1:Recipe 1:

80 Gewichtsprozent Bitumen 100/40 20 Gewichtsprozent Schiefermehl80 weight percent bitumen 100/40 20 weight percent slate flour

Rezeptur 2 :Recipe 2:

88 Gewichtsprozent Bitumen B 200 12 Gewichtsprozent Styrolbutadien/Styrolkautschuk88% by weight of bitumen B 200 12% by weight of styrene butadiene / styrene rubber

Rezeptur 3 :Recipe 3:

65 Gewichtsprozent Bitumen B 200 15 Gewichtsprozent ataktisches Polypropylen 20 Gewichtsprozent Kalksteinmehl.65 weight percent bitumen B 200 15 weight percent atactic polypropylene 20 weight percent limestone powder.

Die Trägereinlage 1 wird auf einer herkömmlichen Anlage zur Herstellung von Dachbahnen beidseitig mit der Bitumenmasse beschichtet, wobei die Bitumenmasse zu diesem Zweck soweit erwärmt wird, daß sie gut fließfähig ist.The carrier insert 1 is coated on both sides with the bitumen mass on a conventional system for producing roofing membranes, the bitumen mass being heated for this purpose to such an extent that it is readily flowable.

Unmittelbar nach der Beschichtung der Trägereinlage wird die Oberseite der Bitumenbeschichtung 3 profiliert, beispielsweise durch geeignete Profilwalzen. Dadurch werden in der Oberfläche wulst-oder noppenförmige Vorsprünge 4 ausgebildet, die sich beispielsweise 0,1 bis 1 mm über die Oberseite der Bitumenbeschichtung 3 erheben. Diese Vorsprünge können bei wulst- oder rippenförmiger Ausbildung im wesentlichen parallel zur Bahnrichtung verlaufen, es ist vorteilhaft, wenn mindestens 10 derartige Wülste auf 10 cm Bahnbreite kommen.Immediately after the coating of the carrier insert, the top of the bitumen coating 3 is profiled, for example by means of suitable profile rollers. As a result, beaded or nub-shaped projections 4 are formed in the surface, which rise, for example, 0.1 to 1 mm above the top of the bitumen coating 3. In the case of a bead-like or rib-shaped configuration, these projections can run essentially parallel to the web direction; it is advantageous if at least 10 such beads come per 10 cm web width.

Unmittelbar nach der Profilierung der Oberseite der Bitumenbeschichtung 3 und der Ausbildung der Vorsprünge 4 wird auf diese strukturierte Oberfläche ein dünnes Kunststoff-Vlies 5 aufgelegt, beispielsweise ein Polypropylen-Vlies oder ein Polyester-Vlies mit Flächengewichten von 10 bis 50 g/m2. Dieses Vlies hat eine Dicke, die vorzugsweise unter der Dicke der Vorsprünge liegt. Das Kunststoff-Vlies 5 sinkt zunächst im Bereich der Vorsprünge 4 in die noch fließfähige Bitumenmasse der Bitumenbeschichtung 3 ein, während es durch die Vorsprünge 4 noch im Abstand von der Oberseite der Bitumenbeschichtung 2 zwischen den Vorsprüngen 4 gehalten wird. Durch das Einsinken des Kunststoff-Vlieses 5 in die Vorsprünge 4 werden diese insbesondere in ihrem oberflächennahen Bereich armiert und damit stabilisiert, so daß die Neigung des Bitumens zum Zusammenfließen und damit zur Nivellierung der Strukturierung ganz erheblich herabgesetzt wird.Immediately after the profiling of the top of the bitumen coating 3 and the formation of the projections 4, a thin plastic fleece 5 is placed on this structured surface, for example a polypropylene fleece or a polyester fleece with weights per unit area of 10 to 50 g / m 2 . This fleece has a thickness which is preferably less than the thickness of the projections. The plastic fleece 5 initially sinks into the still flowable bitumen mass of the bitumen coating 3 in the area of the projections 4, while it is still held at a distance from the top of the bitumen coating 2 between the projections 4 by the projections 4. By sinking the plastic fleece 5 into the projections 4, they are reinforced and thus stabilized, particularly in their near-surface area, so that the tendency of the bitumen to flow together and thus to level the structuring is reduced considerably.

Sobald das Kunststoff-Vlies 5 im Bereich der Vorsprünge 4 zumindest teilweise eingebettet ist, wird die Dachbahn in herkömmlicher Weise abgekühlt, wobei die durch das Kunststoff-Vlies 5 stabilisierte Profilierung der Oberfläche "eingefroren" wird, so daß sie erhalten bleibt. Das Kunststoff- Vlies ist nach dem Abkühlen im Bereich der Vorsprünge 4 in die Bitumenmasse eingebettet, und zwar vorzugsweise im Oberfächenbereich, während das Kunststoff-Vlies in den dazwischenliegenden, tieferen Bereichen im wesentlichen auf der Bitumenschicht aufliegt oder allenfalls geringfügig in diese eintaucht. In der Zeichnung ist die Anordnung des Kunststoff-Vlieses 5 sehr schematisch dargestellt, tatsächlich wird sich das Vlies nicht so genau an die profilierte Oberfläche der Bitumenmasse halten, wie dies in der Zeichnung wiedergegeben ist.As soon as the plastic fleece 5 is at least partially embedded in the area of the projections 4, the roofing membrane is cooled in a conventional manner, the profiling of the surface stabilized by the plastic fleece 5 being "frozen" so that it is retained. After cooling, the plastic fleece is embedded in the bitumen mass in the area of the projections 4, preferably in the surface area, while the plastic fleece in the intermediate, deeper areas lies essentially on the bitumen layer or at most slightly dips into it. In the drawing, the arrangement of the plastic fleece 5 is shown very schematically, in fact the fleece will not adhere to the profiled surface of the bitumen mass as precisely as is shown in the drawing.

Nach Abschluß des Herstellungsverfahrens zeigt die Oberfläche der Dachbahn nebeneinander Bereiche, die im wesentlichen aus kunststoffarmiertem Bitumen beziehungsweise aus einem nur leicht an die darunterliegende Bitumenschicht gebundenen, sonst völlig freiliegenden Kunststoff-Vlies bestehen. Dadurch wird insgesamt die Rutschfestigkeit einer solchen Bahn erheblich erhölt. Besonders vorteilhaft ist bei diesem Aufbau, daß die Profilstruktur der Oberfläche auch dann erhalten bleibt, wenn die Bitumenmasse durch Erhöhung der Temperatur aufgeweicht wird, da die Kunststoffarmierung im Bereich der Vorsprünge insgesamt zu einer Viskositätserhöhung führt und damit einem Zerfließen der Vorsprünge entgegenwirkt.After completion of the manufacturing process, the surface of the roofing membrane shows areas next to one another, which essentially consist of plastic-reinforced bitumen or of a plastic fleece that is only slightly bound to the underlying bitumen layer and is otherwise completely exposed. This significantly increases the overall slip resistance of such a web. It is particularly advantageous in this construction that the profile structure of the surface is retained even if the bitumen mass is softened by increasing the temperature, since the plastic reinforcement in the area of the projections leads to an increase in viscosity overall and thus counteracts a flow of the projections.

Im Gegensatz zu Dachbahnen, die mit relativ dicken Kunststoff-Vliesen kaschiert sind, ist für die beschreibene Dachbahn wesentlich, daß das Kunststoff-Vlies so dünn ausgebildet ist, daß es sich an die Struktur der profilierten Bitumenoberfläche anpaßt und es dem Bitumen ermöglicht, im Bereich der Vorsprünge das Vlies soweit zu durchdringen, daß and der Oberfläche faserarmierte Bitumenbereiche hervortreten, die durch die nicht in das Bitumen entauchende Zwischenbereiche des Kunststoff-Vlieses voneinander getrennt sind.In contrast to roofing membranes, which are laminated with relatively thick plastic fleeces, it is essential for the roofing membrane described that the plastic fleece is so thin that it adapts to the structure of the profiled bitumen surface and enables the bitumen in the area the projections penetrate the fleece to such an extent that fiber-reinforced bitumen regions emerge on the surface, which are separated from one another by the intermediate regions of the plastic fleece that do not escape into the bitumen.

Claims (7)

1. Bituminous roofing sheet with a supporting inlay (1) coated on both sides with bitumen (2, 3) and with a synthetic fleece (5) applied on the upper side, characterized in that the bitumen coating (3) is structured on the upper side to form beaded or burl- shaped projections (4), and that the applied synthetic fleece (5) in the region of the projections (4) is embedded in the bitumen coating (3), whilst in the region between the projections (4) it lies substantially on the bitumen coating (3).
2. Roofing sheet as in Claim 1, characterized in that the synthetic fleece (5) is a polypropylene fleece or a polyester fleece with a surface weight of 10 to 50 grammes per square metre.
3. Roofing sheet as in one of Claims 1 or 2, characterized in that the projections (4) have a height of 0.1 to 1 mm and a width of 1 to 5 mm.
4. Roofing sheet as in Claim 3, characterized in that the projections (4) extend substantially lengthwise of the roofing sheet in the form of ribs or beads.
5. Roofing sheet as in one of the previous claims, characterized in that at least 10 projections (4) are provided per 10 cm sheet width.
6. Roofing sheet as in one of the previous claims, characterized in that the thickness of the synthetic fleece (5) is less than the height of the projections (4).
7. Method of manufacturing a roofing sheet as in one of claims 1 to 6, in which the supporting inlay is coated on both sides with heated and thus fluid bitumen, and the roofing sheet is cooled, characterized in that before cooling the upper side of the upper bitumen coating is structured to form the projections; that a synthetic fleece is laid upon the structured upper side of the still fluid bitumen; and that the roofing sheet is cooled as soon as the synthetic fleece is in the region of the projections, but is not yet immersed the bitumen between them.
EP87116941A 1986-12-17 1987-11-17 Bituminous roofing sheet and its manufacturing method Expired EP0271727B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87116941T ATE47188T1 (en) 1986-12-17 1987-11-17 BITUMINOUS ROOFING MEMBRANE AND METHOD OF MAKING THE SAME.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3643041A DE3643041C1 (en) 1986-12-17 1986-12-17 Bituminous roofing membrane and process for producing the same
DE3643041 1986-12-17

Publications (2)

Publication Number Publication Date
EP0271727A1 EP0271727A1 (en) 1988-06-22
EP0271727B1 true EP0271727B1 (en) 1989-10-11

Family

ID=6316368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116941A Expired EP0271727B1 (en) 1986-12-17 1987-11-17 Bituminous roofing sheet and its manufacturing method

Country Status (3)

Country Link
EP (1) EP0271727B1 (en)
AT (1) ATE47188T1 (en)
DE (2) DE3643041C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19942878A1 (en) * 1999-09-08 2001-03-15 Sandler C H Gmbh Sealing material for construction industry consists of bitumen sheeting covered with synthetic fibre mat
US7906204B2 (en) 2006-03-16 2011-03-15 Soprema Waterproofing UV-resistant bituminous membrane, system incorporating such a membrane, and manufacturing process

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK340189D0 (en) * 1989-07-10 1989-07-10 Jens Villadsens Fabrikker A S PROCEDURE FOR PREPARING A COMPLETE COATING ON A SUBSTRATE
DE4012718A1 (en) * 1990-04-21 1991-10-24 Hoechst Ag FORMWORK
DE9407750U1 (en) * 1994-05-10 1994-06-30 Icopal Siplast Gmbh Formwork sheet, in particular for covering sloping roofs
US5687517A (en) * 1995-09-21 1997-11-18 W. R. Grace & Co.-Conn. Skid-resistant roofing underlayment
GB2310814B (en) * 1996-03-09 1999-09-15 Chesterfelt Limited Roofing Material
DE19652314A1 (en) * 1996-12-16 1998-06-18 Werner Neu Bitumen roofing material has raised sections on top
NL1019650C2 (en) * 2001-12-21 2003-06-24 Esha Holding B V Roofing material, roofing roll and method for manufacturing roofing material.
DE102012215760B4 (en) * 2012-08-31 2021-06-17 W. Quandt Gmbh & Co. Kg Bitumen mass cover layer and method for producing a bitumen mass cover layer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8228354U1 (en) * 1983-01-20 Paul Bauder GmbH & Co, 7000 Stuttgart Butuminous waterproofing membrane for civil engineering
US1518988A (en) * 1922-05-08 1924-12-09 Lehon Co Roofing material
US3091898A (en) * 1956-12-21 1963-06-04 Carey Philip Mfg Co Grooved roofing
DE2218272A1 (en) * 1972-04-15 1973-10-25 Roland Werke F Waldmann Kg METHOD AND DEVICE FOR MANUFACTURING BUBBLE SHEETS, BUBBLE PANELS AND THE LIKE FOR COVERING BUILDING AREAS, IN PARTICULAR FLAT ROOFS
FR2581928A1 (en) * 1983-06-22 1986-11-21 Kagan Leon Reinforced impervious sheet (plate)
DE8514452U1 (en) * 1985-05-15 1986-09-11 Dr. Kohl GmbH & Cie, Dachbelag- und Bautenschutzmittel-Fabrik, 4270 Dorsten Polymer bitumen sheeting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19942878A1 (en) * 1999-09-08 2001-03-15 Sandler C H Gmbh Sealing material for construction industry consists of bitumen sheeting covered with synthetic fibre mat
US7906204B2 (en) 2006-03-16 2011-03-15 Soprema Waterproofing UV-resistant bituminous membrane, system incorporating such a membrane, and manufacturing process

Also Published As

Publication number Publication date
DE3643041C1 (en) 1988-04-28
EP0271727A1 (en) 1988-06-22
DE3760748D1 (en) 1989-11-16
ATE47188T1 (en) 1989-10-15

Similar Documents

Publication Publication Date Title
DE2225358C2 (en) Prefabricated sheet or sheet material
DE60206897T2 (en) Method for reinforcing and sealing paving surfaces
EP0271727B1 (en) Bituminous roofing sheet and its manufacturing method
CH666224A5 (en) LAMINATED BITUMINOESE ROOF COATING.
DE2262102A1 (en) PLASTIC RAILWAY
DE2611177A1 (en) PROCEDURE FOR APPLYING A BITUMINOE OR A WATERPROOF AND THERMAL INSULATION ROOF COVERING
DE3824842C2 (en)
DE202005018638U1 (en) Drainage material for e.g. natural stone plate, has carrier material sections, in which one section in its breadth corresponds to length of step edge, and another section in its height corresponds to height of side step surface
DD300115A5 (en) WATERPROOFED LUBRICANT
US3625119A (en) Surface applications such as bridge deck covering, pavement patching, roofing applications and other coverings
EP0032778B1 (en) Method of manufacturing a covering for concrete roofs, and roof covering thus realised
EP0056660A2 (en) Use of rigid foam panels for thermal insulation of building fronts
DE2303177A1 (en) ROOF ELEMENTS AND THE PROCESS FOR THEIR PRODUCTION
DE19805294B4 (en) Process for the production of a natural stone slab
DE3020945A1 (en) PRE-PREPARED SHEET-SHAPED STRUCTURES AND METHOD FOR THEIR PRODUCTION
DE3115034C1 (en) Process for the production of a multi-colored floor covering
DE60031170T2 (en) WATERPROOF MEMBRANE AND METHOD FOR THE PRODUCTION THEREOF
DE1620828A1 (en) Process for the production of bituminous materials
DE2710578A1 (en) Elastic red gravel sports area or path - comprises elastic layer and covering mat below red gravel coating
EP3290173B1 (en) Method for structuring the surface of a wooden panel and a surface-structured wooden panel prepared by means of this process
EP3323607B1 (en) Sheet material for forming roof coverings
DE4326437A1 (en) Adhesive for rollable waterproof membrane
AT326172B (en) BITUMINOUS COVERING FOR A CONCRETE SURFACE
DE4334560C2 (en) Process for sealing floors or walls
DE19541546A1 (en) Thermoplastic damp proof course for buildings

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI NL

17P Request for examination filed

Effective date: 19880602

17Q First examination report despatched

Effective date: 19890203

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

REF Corresponds to:

Ref document number: 47188

Country of ref document: AT

Date of ref document: 19891015

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3760748

Country of ref document: DE

Date of ref document: 19891116

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980819

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19980914

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19981120

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19981130

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991130

BERE Be: lapsed

Owner name: PAUL BAUDER G.M.B.H. & CO.

Effective date: 19991130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000601

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19991117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000731

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20000601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20021129

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051117

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20061107

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20061222

Year of fee payment: 20