EP2107176B1 - Production of a sealing tape made of soft foam - Google Patents

Production of a sealing tape made of soft foam Download PDF

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Publication number
EP2107176B1
EP2107176B1 EP08006368.8A EP08006368A EP2107176B1 EP 2107176 B1 EP2107176 B1 EP 2107176B1 EP 08006368 A EP08006368 A EP 08006368A EP 2107176 B1 EP2107176 B1 EP 2107176B1
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European Patent Office
Prior art keywords
cellular material
foam
sealing strip
thin
roll
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EP08006368.8A
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German (de)
French (fr)
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EP2107176A1 (en
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ISO Chemie GmbH
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ISO Chemie GmbH
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Priority to EP08006368.8A priority Critical patent/EP2107176B1/en
Priority to DK08006368.8T priority patent/DK2107176T3/en
Priority to PL08006368T priority patent/PL2107176T3/en
Priority to US12/415,668 priority patent/US8075724B2/en
Publication of EP2107176A1 publication Critical patent/EP2107176A1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • E04B1/6812—Compressable seals of solid form
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1056—Perforating lamina
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1056—Perforating lamina
    • Y10T156/1057—Subsequent to assembly of laminae
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1084—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing of continuous or running length bonded web

Definitions

  • DE 40 20 230 A1 refers to the normal production process of sealing tape rolls, in which first the foam sheet is soaked in an impregnating mixture, then compressed and then wound up in this compressed state. The resulting large roll is then split into individual smaller jointing rolls.
  • the US 3 262 827 A discloses a manufacturing process for a foam roll with adhesive tape.
  • a foam web is unwound from a feed roll, a release film is continuously laminated to a lower side of the foam web, and an adhesive layer is arranged between the foam web and the release film.
  • the inventive method for producing a sealing strip roll comprises the following steps: providing a web of a soft open-cell foam; Impregnate the foam to provide delayed recovery of the foam upon release after compression; Rolling the foam sheet onto a wide roll and cutting it into narrow sealing tape rolls; Unwinding each sealing tape roll and applying and continuously bonding a thin closed layer of flexible or sheet-like material having a thickness of 0.002 mm to 0.5 mm on at least one side face of the foam; and rewinding the closed-layered foam into a sealing tape roll in which the foam is in the partially compressed state.
  • a self-adhesive layer (not shown here) for fastening the sealing strip to the window frame, etc., may be provided in each case, which is covered with a covering film.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Sealing Material Composition (AREA)

Description

Die Erfindung betrifft eine Dichtbandrolle mit einem teilkomprimierten offenzelligen weichen Schaumstoff, der nach Komprimierung bei Freigabe eine verzögerte Rückstellung vollzieht.The invention relates to a sealing strip roll with a partially compressed open-cell soft foam, which performs a delayed reset after compression when released.

Dichtbänder aus weichem und flexiblem Schaumstoffmaterial werden in der Bautechnik allgemein zum Abdichten gegen Luftzug und Schlagregen eingesetzt. Im professionellen Hochbau werden solche Dichtbänder beispielsweise zwischen Fenster- und Türrahmen und einem Mauerwerk eingesetzt. Die Dichtbänder können bis zu einigen Zentimetern dick sein und sind gewöhnlich einseitig mit einer Selbstklebeschicht versehen, mit der sie an den Rahmenprofilelementen von Fenstern und Türen angeklebt werden können. Dichtbänder dieser Art sind häufig mit einem Material imprägniert, das die Rückstellung des Schaumstoffmaterials aus einem teilkomprimierten Zustand, in dem sie auf Rolle angeliefert werden, in einen entspannten Zustand verzögert, um die Montage des mit dem Dichtband versehenen Bauelements auf der Baustelle zu erleichtern.Sealing tapes made of soft and flexible foam material are generally used in structural engineering for sealing against draft and driving rain. In professional building construction, such sealing tapes are used, for example, between window and door frames and masonry. The sealing tapes can be up to a few centimeters thick and are usually provided on one side with a self-adhesive layer, with which they can be adhered to the frame profile elements of windows and doors. Sealing tapes of this type are often impregnated with a material which retards the recovery of the foam material from a partially compressed state in which they are delivered to roll in a relaxed state to facilitate the assembly of the sealing tape provided on the construction site component.

Zur Verhinderung einer Dampfdiffusion werden Dichtbänder der vorgenannten Art benötigt, die mit einer Dampfsperre versehen sind. Aus der DE 196 41 415 C2 ist ein Dichtband aus offenporigem Material in zu einer Scheibe aufgerollter Form zum Abdichten von Fugen oder Spalten gegen Luftzug und Schlagregen bekannt, bei dem wenigstens eine Sperrschicht innerhalb des Dichtbandes in solcher Konfiguration angeordnet ist, dass sie und die angrenzenden offenporigen Bereiche in axialer Richtung aufgereiht sind. Die Sperrschicht verläuft also in radialer Richtung der Dichtbandrolle. Die Herstellung solcher Dichtbänder ist relativ kompliziert und erfordert eine hohe Maßhaltigkeit des Schaumstoffmaterials bei der Verarbeitung.To prevent vapor diffusion sealing strips of the aforementioned type are required, which are provided with a vapor barrier. From the DE 196 41 415 C2 is a sealing tape made of open-pored material in rolled-up to a disc shape for sealing joints or gaps against draft and driving rain is known in which at least one barrier layer within the sealing strip is arranged in such a configuration that they and the adjacent open-pore regions are lined up in the axial direction , The barrier layer thus extends in the radial direction of the sealing tape roll. The production of such sealing tapes is relatively complicated and requires a high dimensional stability of the foam material during processing.

Aus der DE 24 57 322 A1 ist in einem völlig anderen Bereich ein Verfahren bekannt, mit dem Kunststoffkörper aus offenporigem Schaumstoff an ihren Außenflächen durch Aufsprühen mit einem Polyurethanüberzug versehen werden können. Dies dient zum Beispiel bei Kinderspielzeug zur längeren Haltbarkeit, weil offene Außenbereiche des offenporigen Schaumstoffs vermieden werden. Das Verfahren verlangt eine spezielle Vorbereitung des Schaumstoffs vor dem Aufbringen des Überzugs. Eine Anwendung im Bereich von Dichtbändern ist weder erwähnt noch werden hierzu Anregungen geliefert.From the DE 24 57 322 A1 For example, in a completely different field, a method is known with which the plastic body of open-pore foam can be provided on its outer surfaces by spraying with a polyurethane coating. This is used, for example, in children's toys for longer durability, because open outdoor areas of the open-cell foam are avoided. The process requires special preparation of the foam prior to application of the coating. An application in the field of sealing tapes is neither mentioned nor will suggestions be provided.

DE 24 10 121 A1 offenbart ein Verfahren zum Aufwickeln von Platten, Streifen oder dergleichen aus elastisch komprimierbarem Material. Dabei wird der zur Komprimierung des elastischen Materials notwendige Druck durch eine Zwischenlage-Folie erzeugt, die fest am Rolleninnenkörper befestigt ist und deren Vorratsrolle durch Bremsbacken abgebremst wird. Dadurch geschieht die Komprimierung direkt an der Rolle und es sind keine weiteren Druckmittel wie Walzen notwendig. DE 24 10 121 A1 discloses a method of winding sheets, strips or the like of elastically compressible material. In this case, the pressure necessary for compressing the elastic material pressure is generated by an intermediate layer film which is fixedly secured to the inner roller body and the supply roll is braked by brake shoes. As a result, the compression takes place directly on the roll and there are no further pressure means such as rollers necessary.

Aus WO 2005/118970 A ist ein Schaumstoff bekannt, der aufgrund der homogenen Tränkung in einem Imprägnat eine verzögerte Rückstellung aufweist. Außerdem ist er weniger luftdurchlässig und weist eine höhere Schlagregendichtigkeit auf. Eine Kombination mit diversen Folien oder Vliesen ist als grundsätzliche Möglichkeit erwähnt.Out WO 2005/118970 A a foam is known which has a delayed recovery due to the homogeneous impregnation in an impregnate. In addition, it is less permeable to air and has a higher watertightness. A combination with various films or nonwovens is mentioned as a fundamental possibility.

In EP 1 473 419 A ist ein Dichtungsband offenbart, das einen weichen Kern aus Schaumstoff aufweist, auf den auf der Oberseite oder der Unterseite, die nicht den Seitenflächen entsprechen, eine Zugverstärkungsschicht aufgebracht ist. Auf dieser Schicht ist eine Folie befestigt, die Gleitmittel enthält. Dadurch haftet sie an Schaumstoffkörpern, ist jedoch leicht und rückstandsfrei zu lösen.In EP 1 473 419 A there is disclosed a sealing tape having a soft foam core onto which a tensile reinforcing layer is applied on the top or bottom, which do not correspond to the side surfaces. On this layer, a film is attached, which contains lubricant. As a result, it adheres to foam bodies, but is easy to solve and residue-free.

Das Auftragen einer Schicht aus Folie, Haut oder dergleichen auf die Seitenfläche eines Schaumstoffs ist aus US 4,401,716 bekannt. Hierbei wird die flüssigkeitsundurchlässige Schicht auf den komprimierten und zu einer Rolle aufgewickelten Schaumstoff aufgetragen.The application of a layer of film, skin or the like on the side surface of a foam is made US 4,401,716 known. Here, the liquid-impermeable layer is applied to the compressed and wound into a roll of foam.

DE 40 20 230 A1 bezieht sich auf den normalen Herstellungsprozess von Dichtbandrollen, bei dem zunächst die Schaumstoffbahn in einer Imprägniermischung getränkt wird, dann komprimiert wird und anschließend in diesem komprimierten Zustand aufgewickelt wird. Die entstehende große Rolle wird dann in einzelne kleinere Fugendichtungsrollen zertrennt. DE 40 20 230 A1 refers to the normal production process of sealing tape rolls, in which first the foam sheet is soaked in an impregnating mixture, then compressed and then wound up in this compressed state. The resulting large roll is then split into individual smaller jointing rolls.

Die US 3 262 827 A offenbart ein Herstellungsverfahren für eine Schaumstoffrolle mit Klebestreifen. Hierbei wird in einem Ausführungsbeispiel eine Schaumstoffbahn von einer Zuführrolle abgewickelt, auf einer Unterseite der Schaumstoffbahn kontinuierlich eine Abziehfolie auflaminiert, und zwischen der Schaumstoffbahn und der Abziehfolie eine Klebeschicht angeordnet.The US 3 262 827 A discloses a manufacturing process for a foam roll with adhesive tape. Here, in one exemplary embodiment, a foam web is unwound from a feed roll, a release film is continuously laminated to a lower side of the foam web, and an adhesive layer is arranged between the foam web and the release film.

US 4181711 A1 offenbart ein Verfahren gemäß dem Oberbegriff des Anspruchs 1. US 4181711 A1 discloses a method according to the preamble of claim 1.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung einer Dichtbandrolle aus weichem Schaumstoff zu schaffen, der relativ kostengünstig ist, wobei die Dichtbandrolle leicht handhabbar ist und sehr gute Dichteigenschaften zeigt.The present invention has for its object to provide a method for producing a sealing strip roll made of soft foam, which is relatively inexpensive, wherein the sealing strip roll is easy to handle and shows very good sealing properties.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.This object is solved by the features of claim 1.

Das erfindungsgemäße Verfahren zur Herstellung einer Dichtbandrolle umfasst folgende Schritte: Bereitstellen einer Bahn aus einem weichen offenzelligen Schaumstoff; Imprägnieren des Schaumstoffs zum Erzielen einer verzögerten Rückstellung des Schaumstoffs bei Freigabe nach Kompression; Aufrollen der Schaumstoffbahn auf eine breite Rolle und Schneiden derselben zu schmalen Dichtbandrollen; Abwickeln jeder Dichtbandrolle und Aufbringen sowie durchgängiges Verhaften einer dünnen geschlossenen Schicht aus einem flexiblen oder folienartigen Material mit einer Dicke von 0,002 mm bis 0,5 mm auf mindestens einer Seitenfläche des Schaumstoffs; und erneutes Aufwickeln des mit der geschlossenen Schicht versehenen Schaumstoffs zu einer Dichtbandrolle, in der der Schaumstoff im teilkomprimierten Zustand vorliegt.The inventive method for producing a sealing strip roll comprises the following steps: providing a web of a soft open-cell foam; Impregnate the foam to provide delayed recovery of the foam upon release after compression; Rolling the foam sheet onto a wide roll and cutting it into narrow sealing tape rolls; Unwinding each sealing tape roll and applying and continuously bonding a thin closed layer of flexible or sheet-like material having a thickness of 0.002 mm to 0.5 mm on at least one side face of the foam; and rewinding the closed-layered foam into a sealing tape roll in which the foam is in the partially compressed state.

Auf diese Weise ist es ökonomisch möglich, die Dichtbandrolle auf einer Seitenfläche mit der geschlossenen dünnen Schicht zu versehen, wobei die Aufbringung der dünnen geschlossenen Schicht im voll expandierten Zustand des Schaumstoffs erfolgt.In this way, it is economically possible to provide the sealing tape roll on a side surface with the closed thin layer, wherein the application of the thin closed layer takes place in the fully expanded state of the foam.

Vorzugsweise wird eine dünne geschlossene Schicht aus einer Polyurethanverbindung direkt auf die Seitenfläche des Schaumstoffs aufgesprüht, welche sich beim Aushärten mit dem Schaumstoff verbindet.Preferably, a thin closed layer of a polyurethane compound is sprayed directly onto the side surface of the foam, which joins with the foam during curing.

Dabei wird die Polyurethanverbindungsschicht in einer Flächenmassendichte von zwischen 20 g/m2 und 150 g/m2 auf die Seitenfläche des Schaumstoffs aufgesprüht und es wird auf Beigabe eines Treibmittels verzichtet. Bei Einhalten dieser Parameter ist gewährleistet, dass die geschlossene Polyurethanverbindungsschicht eine hervorragende Dichtwirkung liefert und gleichzeitig elastisch genug bleibt, um bei einer Komprimierung des Schaumstoffs keine Schäden zu erleiden.In this case, the polyurethane compound layer is sprayed in a surface mass density of between 20 g / m 2 and 150 g / m 2 on the side surface of the foam and it is dispensed with the addition of a blowing agent. Adherence to these parameters ensures that the closed polyurethane compound layer provides an excellent sealing effect and at the same time remains elastic enough not to be damaged when the foam is compressed.

Weitere Eigenschaften, Merkmale und Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung unter Bezugnahme auf die Zeichnungen.

Fig.1
zeigt eine Dichtbandrolle in einem teilweise abgewickelten Zustand.
Fig. 2
zeigt eine Querschnittsansicht einer ersten Ausführungsform der Dichtbandrolle aus Fig. 1;
Fig. 3
zeigt eine alternative Ausführungsform, bei der die dünne geschlossene Schicht auch auf einen Abschnitt der Oberseite und Unterseite des Schaumstoffs aufgebracht ist; und
Fig. 4
zeigt schematisch den Ablauf bei der erfindungsgemäßen Herstellung einer Dichtbandrolle.
Further characteristics, features and advantages of the present invention will become apparent from the following description with reference to the drawings.
Fig.1
shows a sealing tape roll in a partially unwound state.
Fig. 2
shows a cross-sectional view of a first embodiment of the sealing strip roll Fig. 1 ;
Fig. 3
shows an alternative embodiment in which the thin closed layer is also applied to a portion of the top and bottom of the foam; and
Fig. 4
shows schematically the process in the production of a sealing strip roll according to the invention.

Die in Fig. 1 dargestellte Dichtbandrolle 2 besteht aus einem weichen offenzelligen Schaumstoff 4, der im Querschnitt vorzugsweise rechteckig ausgebildet ist und in Längsrichtung um eine Hülse 6 aufgewickelt ist. Im aufgerollten Zustand ist der Schaumstoff 4 teilkomprimiert. So werden die Dichtbandrollen üblicherweise auf den Markt gebracht und erst kurz vor der Anwendung auf der Baustelle abgewickelt, wodurch sich der Schaumstoff 4 in seine abschließende expandierte oder zumindest teilexpandierte Funktionsstellung ausdehnen kann. Zur Verzögerung der Rückstellung des Schaumstoffs 4 bei Freigabe nach der Kompression, d.h. nach Abwickeln von der Dichtbandrolle 2, ist der offenzellige Schaumstoff 4 in der Regel mit einem klebrigen Imprägnat getränkt, das die Rückstellung des Schaumstoffs 4 in den expandierten Zustand beträchtlich, bis hin zu einigen Stunden, verzögert, um die Handhabbarkeit beim Einbau in abzudichtende Fugen zu verbessern.In the Fig. 1 shown sealing tape roll 2 consists of a soft open-cell foam 4, which is preferably rectangular in cross-section and is wound in the longitudinal direction around a sleeve 6. When rolled up, the foam 4 is partially compressed. Thus, the sealing tape rolls are usually placed on the market and handled only shortly before use on the site, which can expand the foam 4 in its final expanded or at least partially expanded functional position. To delay the recovery of the foam 4 when released after compression, ie after unwinding from the sealing tape roll 2, the open-cell foam 4 is usually soaked with a sticky impregnate, the provision of the foam 4 in the expanded state considerably, down to a few hours, delayed to improve the handling when installing in sealed joints.

Bei der in Fig. 1 dargestellten Ausführungsform ist auf einer Seitenfläche des Schaumstoffs 4 eine dünne geschlossene Schicht 8 aus einem flexiblen oder folienartigen Material mit einer Dicke von 0,002 mm bis 0,5 mm, vorzugsweise zwischen 0,005 mm und 0,015 mm aufgebracht und unmittelbar auf dem Schaumstoff 4 verhaftet. Ebenso ist es möglich, beide Seitenflächen mit einer dünnen Schicht 8 zu überziehen. Im teilkomprimierten Zustand in der Dichtbandrolle 2 ergibt sich eine bestimmte Waben- oder Wellenbildung bzw. die Ausbildung von Falten der geschlossenen Schicht 8.At the in Fig. 1 1, a thin closed layer 8 made of a flexible or sheet-like material with a thickness of 0.002 mm to 0.5 mm, preferably between 0.005 mm and 0.015 mm, is applied on one side surface of the foam 4 and is adhered directly to the foam 4. It is also possible to cover both side surfaces with a thin layer 8. In the partially compressed state in the sealing tape roll 2 results in a specific honeycomb or wave formation or the formation of wrinkles of the closed layer. 8

Auf der Unterseite des Schaumstoffs 4 kann jeweils eine hier nicht dargestellte Selbstklebeschicht zur Befestigung des Dichtbandes am Fensterrahmen etc. vorgesehen sein, die mit einer Abdeckfolie abgedeckt ist.On the underside of the foam 4, a self-adhesive layer (not shown here) for fastening the sealing strip to the window frame, etc., may be provided in each case, which is covered with a covering film.

Der Schaumstoff besteht üblicherweise aus einem aufgeschäumten Polyurethanschaumstoff, es kommen aber auch alle anderen möglichen weichen offenzelligen Schaumstoffarten in Frage.The foam usually consists of a foamed polyurethane foam, but there are also all other possible soft open-cell foam types in question.

Übliche Dicken des Schaumstoffs in Querrichtung, d.h. senkrecht zur mit der geschlossenen Schicht bedeckten Seitenfläche, liegen im Bereich von ca. 8 mm bis 200 mm.Typical thicknesses of the foam in the transverse direction, i. perpendicular to the covered with the closed layer side surface, are in the range of about 8 mm to 200 mm.

Die geschlossene dünne Schicht 8 kann auf verschiedenste Arten erzeugt werden. Sie kann beispielsweise aus einer thermisch aufgebrachten Heißklebefolie bestehen, die aus einem heißkaschierfähigen, thermoplastischen Kunststoff besteht, beispielsweise Polyvinylacetate, Ethylenvenylacetat, Polyolefine oder Polyethylen.The closed thin layer 8 can be produced in various ways. It can for example consist of a thermally applied hot-melt adhesive film, which consists of a heat-treatable thermoplastic, for example polyvinyl acetates, ethylene vinyl acetate, polyolefins or polyethylene.

Ebenso ist es möglich, eine dünne Schicht einer Kunststofffolie oder eines geschlossenzelligen Schaumstoffs auf den Schaumstoff 4 aufzukleben. Wenn die beiden Schichten weder thermoplastisch noch selbstklebend sind, benötigt man hierzu eine klebrige Komponente. Als Kleber kommen beispielsweise Polyurethankleber oder Acrylatsysteme zur Anwendung. Es kann auch eine fertige feste Folie verwendet werden, welche ein- oder zweiseitig klebrig ist. Als Folienmaterial kommen hierbei im Prinzip alle möglichen Kunststoffe in Frage, beispielsweise Polyethylen, Polyvinylchlorid oder Polyurethan. Der gängigste Klebstoff in solchen Anwendungen ist Acrylat.It is also possible to stick a thin layer of a plastic film or a closed-cell foam on the foam 4. If the two layers are neither thermoplastic nor self-adhesive, this requires a sticky component. For example, polyurethane adhesives or acrylate systems are used as adhesives. It is also possible to use a finished solid film which is tacky on one or two sides. In principle, all possible plastics come into consideration as film material, for example polyethylene, polyvinyl chloride or polyurethane. The most common adhesive in such applications is acrylate.

Eine besonders bevorzugte Variante ist die Verhautung, d.h. eine Beschichtung des Schaumstoffs 4 mit einer flüssigen Masse, die nicht oberflächenklebrig aushärtet und die gesamte Seitenfläche lückenlos bedeckt. Üblicherweise erfolgt eine derartige Verhautung mittels Besprühen der Seitenfläche, wie später noch näher erläutert wird.A particularly preferred variant is the skin formation, i. a coating of the foam 4 with a liquid mass that does not harden surface-tacky and covers the entire side surface gapless. Usually, such a skinning takes place by spraying the side surface, as will be explained in more detail later.

Bei einem porigen Untergrund wie einem Polyurethanschaumstoff 4 sind als Flächenmassendichte beim Auftragen mindestens 20 g/m2 (trocken) notwendig, wobei die sinnvolle Obergrenze bei etwa 150 g/m2 liegt. Als Verhautungsmaterial kommen insbesondere Polyurethan-Systeme in Betracht, da diese schnell ausreagieren, dekorativ sind, gute Flexibilität zeigen und eine gute chemische Resistenz aufweisen. Eine derartige geschlossene Polyurethanverbindungsschicht besteht aus einer Polymermatrix ohne wesentliche Lufteinschlüsse und ist daher hervorragend geeignet, die Dichtfunktion des Dichtungsbandes zu verstärken und selbiges gegenüber Einwirkungen von außen resistenter zu machen. Die aufgesprühte Schaumstoffhaut ist äußerst reaktiv und bildet mit dem Schaumstoff 4 eine feste Klebeverbindung.In the case of a porous substrate such as a polyurethane foam 4, the surface mass density required during application is at least 20 g / m 2 (dry), the useful upper limit being about 150 g / m 2 . Polyurethane systems are particularly suitable as skin-care material, since they react quickly, are decorative, show good flexibility and have good chemical resistance. Such a closed polyurethane compound layer consists of a polymer matrix without significant air pockets and is therefore excellently suited to reinforce the sealing function of the sealing strip and to make the same resistant to external influences. The sprayed-on foam skin is extremely reactive and forms a firm adhesive bond with the foam 4.

Neben der in Fig. 1 und Fig. 2 dargestellten Ausführungsform, bei der lediglich eine Seitenfläche des Schaumstoffs 4 mit der dünnen geschlossenen Schicht 8 überzogen ist, ist es auch denkbar, zumindest einen Abschnitt 10 der Oberseite des Schaumstoffs 4 und/oder der Unterseite des Schaumstoffs 4 mit der dünnen Schicht 8 zu überziehen, wie es in Fig. 3 dargestellt ist. Hierdurch wird eine Art Dichtlippenfunktion erzielt, welche die Dichteigenschaften beim Einsatz noch weiter verbessert.In addition to the in Fig. 1 and Fig. 2 illustrated embodiment in which only one side surface of the foam 4 is coated with the thin closed layer 8 is it is also conceivable to cover at least a portion 10 of the upper side of the foam 4 and / or the underside of the foam 4 with the thin layer 8, as shown in FIG Fig. 3 is shown. As a result, a kind of sealing lip function is achieved, which further improves the sealing properties during use.

In Fig. 4 ist das erfindungsgemäße Verfahren zur Herstellung einer entsprechenden Dichtbandrolle 2 schematisch dargestellt. Zunächst wird im Schritt 20 eine Bahn aus einem weichen offenzelligen Schaumstoff 4 bereitgestellt und diese wird, vorzugsweise durch Tränken in einem Bad mit einem Imprägnat, beispielsweise auf Acrylatbasis, imprägniert. Dadurch erhält der Schaumstoff 4 die Eigenschaft der verzögerten Rückstellung bei Freigabe nach Kompression.In Fig. 4 the inventive method for producing a corresponding sealing strip roll 2 is shown schematically. First, in step 20, a sheet of soft open-cell foam 4 is provided and impregnated, preferably by impregnation in a bath, with an impregnate, for example an acrylate-based. This gives the foam 4 the property of delayed recovery upon release after compression.

Anschließend wird im Schritt 22 die imprägnierte Schaumstoffbahn auf eine breite Rolle gewickelt und im Schritt 24 wird diese zu schmalen Dichtbandrollen geschnitten. Zur Aufbringung der dünnen geschlossenen Schicht 8 wird jede Dichtbandrolle 2 wieder abgewickelt (Schritt 26) und die dünne geschlossene Schicht 8 aus dem flexiblen oder folienartigen Material mit einer Dicke von 0,002 mm bis 0,5 mm wird unmittelbar auf die Seitenfläche des Schaumstoffs 4. in dessen unkomprimiertem Zustand aufgebracht und daran durchgängig verhaftet (Schritt 28). Die Aufbringung erfolgt entweder über thermischen Auftrag, über Verklebung, bevorzugt aber über Besprühen der Seitenfläche mit einer Polyurethanverbindung. Nach dem Aufbringen und gegebenenfalls dem Aushärten der dünnen Schicht 8 wird im Schritt 30 der mit der geschlossenen Schicht 8 versehene Schaumstoffstreifen wieder zu einer Dichtbandrolle aufgewickelt, in der der Schaumstoff 4 im teilkomprimierten Zustand vorliegt. In diesem Zustand gelangt die Dichtbandrolle anschließend auch in den Verkauf.Subsequently, in step 22, the impregnated foam sheet is wound on a wide roll and in step 24, this is cut into narrow sealing tape rolls. For application of the thin closed layer 8, each sealing tape roll 2 is unwound again (step 26) and the thin closed layer 8 of the flexible or sheet-like material having a thickness of 0.002 mm to 0.5 mm is applied directly to the side surface of the foam 4 its uncompressed state applied and consistently adhered thereto (step 28). The application is carried out either by thermal application, by gluing, but preferably by spraying the side surface with a polyurethane compound. After the application and optionally the curing of the thin layer 8, the foam strip provided with the closed layer 8 is wound up again into a sealing strip roll in step 30, in which the foam 4 is in the partially compressed state. In this state, the sealing tape roll then also goes on sale.

Claims (6)

  1. Method for producing a sealing strip roll (2) employing the following steps:
    Preparing a length of open-cell cellular material (4);
    Impregnating (20) the cellular material (4) in order to prevent the cellular material (4) from reverting to its original shape after being released from compression;
    Rolling up (22) the length of cellular material into a wide roll and cutting (24) this wide roll into narrow sealing strip rolls, whereby each sealing strip has a rectangular cross-section, together with an upper side, a lower side and two side ends, which form the side ends of the sealing strip roll:
    characterised by:
    Unrolling (26) each sealing strip from the sealing strip roll and attaching it together with the complete adherence (28) of a thin closed layer (8) of a flexible or film type coating of 0.002 mm to 0.5 mm onto at least one side of the cellular material (4) while the latter in not in a compressed state; and
    rewinding (30) the strip of cellulose material (4) containing the thin, closed layer (8) into a sealing strip roll (2), in which the cellular material (4) is in a partially compressed state.
  2. Method according to Claim 1 above characterised in that the step of applying and adhering (28) the thin, closed layer (8) incorporates the thermal application of a hot adhesive film.
  3. Method according to Claim 1 above characterised in that the step of applying and adhering (28) the thin, closed layer (8) incorporates the adhesion of a layer of plastic film or of a closed-cell cellular material.
  4. Method according to Claim 2 above characterised in that the step of applying and adhering (28) the thin, closed layer (8) incorporates the application of a self-adhesive film that is sticky at least on the side facing the cellular material (4).
  5. Method according to Claim 1 above characterised in that the step of applying and adhering (28) the thin, closed layer (8) incorporates spraying a polyurethane compound, which on hardening, firmly bonds with the cellular material (4).
  6. Method according to Claim 5 above characterised in that the step of spraying the closed layer of polyurethane compound consists in spraying the polyurethane compound in an area mass density of between 20 g/m2 and 150 g/m2 on the side of the cellular material (4), thus dispensing with the need for an expansion agent.
EP08006368.8A 2008-03-31 2008-03-31 Production of a sealing tape made of soft foam Active EP2107176B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP08006368.8A EP2107176B1 (en) 2008-03-31 2008-03-31 Production of a sealing tape made of soft foam
DK08006368.8T DK2107176T3 (en) 2008-03-31 2008-03-31 Production of a soft foam sealing tape
PL08006368T PL2107176T3 (en) 2008-03-31 2008-03-31 Production of a sealing tape made of soft foam
US12/415,668 US8075724B2 (en) 2008-03-31 2009-03-31 Sealing strip of soft foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08006368.8A EP2107176B1 (en) 2008-03-31 2008-03-31 Production of a sealing tape made of soft foam

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EP2107176A1 EP2107176A1 (en) 2009-10-07
EP2107176B1 true EP2107176B1 (en) 2015-09-30

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EP2107176A1 (en) 2009-10-07
US20090246498A1 (en) 2009-10-01
PL2107176T3 (en) 2016-03-31
US8075724B2 (en) 2011-12-13
DK2107176T3 (en) 2016-01-11

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