EP0446778B1 - Roller shutter slat of stable form and its method of fabrication - Google Patents

Roller shutter slat of stable form and its method of fabrication Download PDF

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Publication number
EP0446778B1
EP0446778B1 EP91103444A EP91103444A EP0446778B1 EP 0446778 B1 EP0446778 B1 EP 0446778B1 EP 91103444 A EP91103444 A EP 91103444A EP 91103444 A EP91103444 A EP 91103444A EP 0446778 B1 EP0446778 B1 EP 0446778B1
Authority
EP
European Patent Office
Prior art keywords
roller shutter
hollow body
aluminum band
wall
shutter slat
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.)
Revoked
Application number
EP91103444A
Other languages
German (de)
French (fr)
Other versions
EP0446778A3 (en
EP0446778A2 (en
Inventor
Helmuth Dipl.-Ing. Schneider
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.)
Vaw Aluminium AG
Original Assignee
Vaw Aluminium AG
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Filing date
Publication date
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Application filed by Vaw Aluminium AG filed Critical Vaw Aluminium AG
Priority to AT91103444T priority Critical patent/ATE92581T1/en
Publication of EP0446778A2 publication Critical patent/EP0446778A2/en
Publication of EP0446778A3 publication Critical patent/EP0446778A3/en
Application granted granted Critical
Publication of EP0446778B1 publication Critical patent/EP0446778B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/15—Roller shutters with closing members formed of slats or the like
    • E06B9/165—Roller shutters with closing members formed of slats or the like with slats disappearing in each other; with slats the distance between which can be altered
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/15—Roller shutters with closing members formed of slats or the like
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/15—Roller shutters with closing members formed of slats or the like
    • E06B2009/1505—Slat details
    • E06B2009/1527—Transparent slats or transparent sections in slats
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/15—Roller shutters with closing members formed of slats or the like
    • E06B2009/1533—Slat connections
    • E06B2009/1538—Slats directly connected
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1355—Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
    • Y10T428/1393—Multilayer [continuous layer]

Definitions

  • the invention relates to a dimensionally stabilized roller shutter slat, which consists of a one side coated with plastic and with the coated side facing inwards to form a hollow body profile with connecting ends of roll-formed aluminum strip, the aluminum strip being formed at least at the connecting ends with a double layer with an intermediate plastic layer, and a method for producing such dimensionally stabilized roller shutter bar.
  • a form-stabilized roller shutter rod which has a reinforcing part in the central axis of the hollow body profile.
  • This reinforcement part consists of a PVC insert body which can be additionally reinforced by a metal core during the production by means of an extrusion process.
  • the finished roller shutter rod made of plastic shows disadvantages when weathering, especially when exposed to sunlight and low temperatures. Under these conditions, the plastic may become brittle and, after prolonged exposure, the outer layer may become discolored. In addition, the manufacturing method is very time consuming and expensive.
  • roller shutter slat is described in European patent application EP-A-03 65 908, which is roll-formed from an aluminum band coated on one side to form a hollow body profile, a double-layer plastic layer being formed in the area of the connection areas, which ensures that the damping of the Shutters of emitted sound are created because the acoustic decoupling of the aluminum surfaces prevents sound transmission between them.
  • EP-A-03 65 908 is roll-formed from an aluminum band coated on one side to form a hollow body profile, a double-layer plastic layer being formed in the area of the connection areas, which ensures that the damping of the Shutters of emitted sound are created because the acoustic decoupling of the aluminum surfaces prevents sound transmission between them.
  • EP-A-03 65 908 is roll-formed from an aluminum band coated on one side to form a hollow body profile, a double-layer plastic layer being formed in the area of the connection areas, which ensures that the damping of the Shutters of emitted sound are created because the
  • the invention has for its object to provide a dimensionally stabilized roller shutter bar, the bending stiffness and durability are improved without the sound-absorbing properties are reduced.
  • the object of the invention is also to provide a manufacturing method for such a dimensionally stabilized roller shutter bar with high bending stiffness and durability.
  • the object is achieved in the case of a dimensionally stabilized roller shutter slat of the type mentioned at the outset in that, in the region of the double-layer aluminum strip, the strip layers are at least partially bonded to one another via the plastic layer formed as an adhesive medium and hardened by the action of heat.
  • the durability of the form-stabilized roller shutter rod results from the fact that it is made entirely of durable aluminum at the places exposed to the weather.
  • the improved bending stiffness stems from the fact that in the area of the at least two aluminum strip layers it is no longer possible to shift them relative to one another, in particular when subjected to torsional stress. This has a particular effect on temperature stresses, such as those that occur when the roller shutter rod is exposed to direct sunlight.
  • the twists occurring in known roller shutter slats, in which the ends of the hollow body profile running in guides rotate about the longitudinal central axis, are avoided in the roller shutter slat according to the invention.
  • the material connection in the area of the adhesive layer creates the desired non-positive connection.
  • the hot-melt adhesive layer is applied to edge areas of the aluminum strip which, after roll forming, face one another in the double-layered strip areas.
  • gluing with a plastic film is sufficient, which is either applied to the aluminum strip before the roll forming or separately introduced into the forming process before or after the roll former. If the bonding is to be limited to the edge areas, it is sufficient if a correspondingly narrow plastic tape with the hot-melt adhesive layer runs in on both sides of the roller shutter rod.
  • the integral connection can also be formed by a welded connection.
  • connection is preferably provided in one of the connection areas, both connection areas also being able to be fixed accordingly.
  • the at least two aluminum strip layers are formed by the inner wall and the outer wall, which are brought together at a contact point to form the integral connection. It is thereby achieved that not only the surfaces in the connection area are mechanically fixed, but the central area of the hollow body profile is solidified at at least one point to increase the bending stiffness. This also changes the resonance behavior of the roller shutter slat and thus improves sound absorption.
  • the fixing between the inner wall and outer wall is preferably achieved by deforming the inner wall in the direction of the outer wall, so that there is a smaller bending radius in the area of the contact point with respect to the inner wall than in the case of the outer wall.
  • the form-stabilized roller shutter slat according to the invention is preferably roll-formed from aluminum strip material which has a thickness between 0.15 and 0.8 mm.
  • the method according to the invention for producing a dimensionally stabilized roller shutter rod includes the method steps that the double-layer aluminum strip surfaces in the area of the connection ends are at least partially bonded to one another by the plastic layer designed as an adhesive medium being solidified by the action of heat.
  • the invention therefore provides that where at least two aluminum strip layers are adjacent, these are fixed against each other by a material connection, so that no more movement of the belt layers in the area of their contact point is possible. This results in the desired solidification of the roller shutter bar
  • the plastic preferably consists of an adhesive medium, the aluminum strip layers formed to form the hollow body profile being held under pressure in at least one of the two connection regions until a cohesive connection is produced.
  • the plastic layer consists of a hot-melt adhesive and the aluminum strip formed into the hollow body profile is glued or welded after heating in the region of the double-layer connection areas, the material connection of the adhesive connection results in a particularly high bending stiffness.
  • a practical procedure results from the fact that the bonding or welding takes place after the roll forming of the hollow body profile.
  • the hot-melt adhesive is heated during roll forming by heating the aluminum strip.
  • roller shutter slat according to the invention, consisting of the hollow body profile 1 and two connecting ends 2, 3 with a corresponding hook and eye area 4, 5.
  • the roller shutter rod has been produced by roll forming from an aluminum strip 6 which is coated with an adhesive medium 7 on the entire inside of the hollow body profile and also between the connection ends.
  • the adhesive medium 7 can be carried out by extrusion coating, by applying a liquid or by lamination using a polymer film. In roll forming, the adhesive medium is pressed against one another at the connection ends, thereby producing an intimate contact between the adhesive medium and the aluminum strip. By exposure to heat, this contact is formed into a cohesive connection that can withstand high mechanical loads.
  • a polyethylene copolymer has proven itself for coating the aluminum strips. It is advantageous if the copolymer is provided with sound-absorbing pigments which are either applied to the aluminum strip in the liquid phase during extrusion or are already present in the finished laminating medium. Due to the full area Coating the hollow profile interior, the sound-absorbing properties are greatly improved.
  • the coating can also be done with a polypropylene film.
  • the adhesive medium is limited to the contact points 8,9,10 at the connection ends.
  • This variant represents a simplified embodiment compared to the full-area coating shown in FIG. 1, but which shows equivalent results in terms of dimensional stability.
  • Figure 3 now shows a non-positive connection in the form of an adhesive bond 15 between the outer wall 13 and the inner wall 14 of the roller shutter rod.
  • the aluminum strip in the central region of the inner wall 14 was deformed inwards to such an extent that it forms a contact point with the outer wall 13.
  • a previously applied adhesion promoter can bring about the integral cohesion.
  • the brackets can follow the point at one or more points of the inner and outer wall or also continuously in the form of a line in the direction of the longitudinal axis.
  • adhesive bonds 16, 17, 17 a are also provided at the connection ends.
  • bonds can be made in a cold or warm state.
  • the temperatures are when the Adhesive media above approx. 100 ° C and preferably in the range from 150 to 200 ° C.
  • the hot melt adhesive is activated and the strength of the hollow body profile corresponds to that of a profile of the same dimension which is foamed with PU foam.
  • the heating can be carried out by commercially available means, e.g. by infrared or induction heating elements which are attached at a suitable point during roll forming of the roller shutter rod according to the invention.
  • the finished product must then be specifically cooled, e.g. by blowing with air.
  • roller shutter slats according to the invention can withstand solar radiation at temperatures of up to 80 ° C. All suitable resins, acrylates and hot melt adhesives such as e.g. Use polyamides.
  • contact points are also possible in the central region at various points on the hollow body profile.
  • the contact points are produced in that the originally parallel aluminum strip is deformed between the connecting ends of the roller shutter rod in the central region of the hollow body profile.
  • the inner wall 14 of the hollow body profile 18 is preferably deformed in such a way that a contact point 15 with the outer wall 13 is created.
  • the outer wall 13 can also be deformed, for example, in a bead-like manner, the bead bottom forming a contact point with the inner wall 14 of the hollow body profile 18. Beyond that too Deform both walls 13, 14 at the same time if this is expedient for reasons of strength or to increase stability.
  • plastics and in particular hot-melt adhesive can be used in the production of the integral connection. These are welded under the influence of heat (plastics) or glued (hot melt adhesive).
  • hot melt adhesive In addition to the copolymers mentioned in the description, such as polyethylene, polypropylene film can also be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Stringed Musical Instruments (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)
  • Blinds (AREA)
  • Materials For Medical Uses (AREA)

Abstract

The invention refers to a roller shutter rod of stable shape, consisting of an aluminum strip plastic-coated on one side at least in part, and roll-formed into a hollow section 18 with the coated side inwards, the hollow section featuring upper and lower connecting areas with double-layer aluminum strip and an inside wall 14 as well as an outside wall 13, said hollow section featuring for the increase of the longitudinal stiffness and durability of the roller shutter rod at least one contact point 15, at which at least two aluminum strip layers are bonded with one another.

Description

Die Erfindung betrifft einen formstabilisierten Rolladenstab, der aus einem einseitig mit Kunststoff beschichteten und mit der beschichteten Seite nach innen zu einem Hohlkörperprofil mit Anschlußenden rollgeformten Aluminiumband besteht, wobei zumindest an den Anschlußenden das Aluminiumband doppellagig mit dazwischenliegender Kunststoffschicht ausgebildet ist sowie ein Verfahren zur Herstellung eines solchen formstabilisierten Rolladenstabes.The invention relates to a dimensionally stabilized roller shutter slat, which consists of a one side coated with plastic and with the coated side facing inwards to form a hollow body profile with connecting ends of roll-formed aluminum strip, the aluminum strip being formed at least at the connecting ends with a double layer with an intermediate plastic layer, and a method for producing such dimensionally stabilized roller shutter bar.

Aus der EP-A-00 75768 ist ein formstabilisierter Rolladenstab bekannt, der in der Mittelachse des Hohlkörperprofils ein Verstärkungsteil aufweist. Dieses Verstärkungsteil besteht aus einem PVC-Einsatzkörper der bei der Herstellung mittels Strangpressverfahren noch zusätzlich durch einen Metallkern verstärkt werden kann. Der fertige Rolladenstab aus Kunststoff zeigt Nachteile bei der Bewitterung, insbesondere bei Sonnenbestrahlung und tiefen Temperaturen. Unter diesen Bedingungen kann es zu Versprödungen des Kunststoffes und nach längerer Einwirkung auch zu einer Entfärbung der Außenschicht kommen. Darüber hinaus ist die Fertigungsweise sehr zeitaufwendig und teuer.From EP-A-00 75768 a form-stabilized roller shutter rod is known which has a reinforcing part in the central axis of the hollow body profile. This reinforcement part consists of a PVC insert body which can be additionally reinforced by a metal core during the production by means of an extrusion process. The finished roller shutter rod made of plastic shows disadvantages when weathering, especially when exposed to sunlight and low temperatures. Under these conditions, the plastic may become brittle and, after prolonged exposure, the outer layer may become discolored. In addition, the manufacturing method is very time consuming and expensive.

Aus dem deutschen Gebrauchsmuster DE-U-8907445 ist ein Rolladenstab bekannt, der unter der Ausbildung von Anschlußbereichen und Wandungen aus einem mit Kunststoff beschichteten Aluminiumband rollgeformt ist. Bei diesem bekannten Rolladenstab sind die Beschichtungen der Wandungen mit unterschiedlichen Schichtgewichten ausgebildet, so daß durch asymmetrische Gewichtsverteilung eine Dämpfung der Schwingungen des Hohlkörperprofils und somit eine Verminderung der Schallemission erreicht werden kann.From the German utility model DE-U-8907445 a roller shutter rod is known, which is roll-formed with the formation of connection areas and walls from a plastic-coated aluminum strip. In this known roller shutter bar, the coatings on the walls formed with different layer weights so that a damping of the vibrations of the hollow body profile and thus a reduction of the sound emission can be achieved by asymmetrical weight distribution.

Ein anderer Rolladenstab ist in der europäischen Patentanmeldung EP-A-03 65 908 beschrieben, der aus einem einseitig beschichteten Aluminiumband zu einem Hohlkörperprofil rollgeformt wird, wobei im Bereich der Anschlußbereiche eine doppellagig ausgeführte Kunststoffschicht gebildet ist, die dafür sorgt, daß eine Dämpfung des vom Rolladen abgestrahlten Schalles entsteht, da durch die akustische Entkopplung der Aluminiumflächen die Schallübertragung zwischen denselben vermieden wird. Zur Verbesserung der Formstabilität dieses Rolladenstabes ist es möglich, den Innenraum des Hohlkörperprofils auszuschäumen. Dieses Verfahren ist jedoch teuer und aus Umweltgesichtspunkten nicht immer erwünscht.Another roller shutter slat is described in European patent application EP-A-03 65 908, which is roll-formed from an aluminum band coated on one side to form a hollow body profile, a double-layer plastic layer being formed in the area of the connection areas, which ensures that the damping of the Shutters of emitted sound are created because the acoustic decoupling of the aluminum surfaces prevents sound transmission between them. To improve the dimensional stability of this roller shutter slat, it is possible to foam the interior of the hollow body profile. However, this process is expensive and is not always desirable from an environmental point of view.

Der Erfindung liegt die Aufgabe zugrunde, einen formstabilisierten Rolladenstab zu schaffen, dessen Biegesteifigkeit und Haltbarkeit verbessert werden, ohne daß die schalldämpfenden Eigenschaften herabgesetzt werden. Aufgabe der Erfindung ist auch die Angabe eines Herstellungsverfahrens für einen solchen formstabilisierten Rolladenstab mit hoher Biegesteifigkeit und Haltbarkeit.The invention has for its object to provide a dimensionally stabilized roller shutter bar, the bending stiffness and durability are improved without the sound-absorbing properties are reduced. The object of the invention is also to provide a manufacturing method for such a dimensionally stabilized roller shutter bar with high bending stiffness and durability.

Die Aufgabe wird bei einem formstabilisierten Rolladenstab der eingangs genannten Art dadurch gelöst, daß im Bereich des doppellagigen Aluminiumbandes die Bandlagen mindestens teilweise stoffschlüssig über die als Haftmedium ausgebildete durch Wärmeeinwirkung verfestigte Kunststoffschicht miteinander verbunden sind.The object is achieved in the case of a dimensionally stabilized roller shutter slat of the type mentioned at the outset in that, in the region of the double-layer aluminum strip, the strip layers are at least partially bonded to one another via the plastic layer formed as an adhesive medium and hardened by the action of heat.

Die Haltbarkeit des formstabilisierten Rolladenstabes ergibt sich dadurch, daß er an den der Witterung ausgesetzten Stellen völlig aus beständigem Aluminium besteht. Die verbesserte Biegesteifigkeit rührt daher, daß im Bereich der mindestens zwei Aluminiumbandlagen eine Verschiebung derselben gegeneinander, insbesondere bei Drehbeanspruchung, nicht mehr möglich ist. Dies wirkt sich besonders bei Temperaturbeanspruchungen aus, wie sie bei direkter Sonnenbestrahlung des Rolladenstabes auftreten. Die bei bekannten Rolladenstäben auftretenden Verwindungen, bei denen sich die in Führungen laufenden Enden des Hohlkörperprofils um die Längs- Mittelachse drehen, werden beim erfindungsgemäßen Rolladenstab vermieden.The durability of the form-stabilized roller shutter rod results from the fact that it is made entirely of durable aluminum at the places exposed to the weather. The improved bending stiffness stems from the fact that in the area of the at least two aluminum strip layers it is no longer possible to shift them relative to one another, in particular when subjected to torsional stress. This has a particular effect on temperature stresses, such as those that occur when the roller shutter rod is exposed to direct sunlight. The twists occurring in known roller shutter slats, in which the ends of the hollow body profile running in guides rotate about the longitudinal central axis, are avoided in the roller shutter slat according to the invention.

Durch den Stoffschluß im Bereich der Klebeschicht entsteht die gewünschte kraftschlüssige Verbindung. Hierzu reicht es aus, wenn die Schmelzklebeschicht auf Randbereiche des Aluminiumbandes aufgetragen wird, die nach dem Rollformen in den doppellagig geformten Bandbereichen einander zugewandt sind.The material connection in the area of the adhesive layer creates the desired non-positive connection. For this purpose, it is sufficient if the hot-melt adhesive layer is applied to edge areas of the aluminum strip which, after roll forming, face one another in the double-layered strip areas.

Bei weniger beanspruchten Teilen reicht auch eine Verklebung mittels einer Kunststoffolie, die entweder auf dem Aluminiumband vor der Rollformung aufgebracht oder separat bei der Rollformung vor oder hinter dem Rollformer in den Verformungsvorgang eingeführt wird. Soll die Verklebung auf die Randbereiche beschränkt werden, reicht es, wenn ein entsprechend schmales Kunststoffband mit der Schmelzklebeschicht an beiden Seiten des Rolladenstabes einläuft.For less stressed parts, gluing with a plastic film is sufficient, which is either applied to the aluminum strip before the roll forming or separately introduced into the forming process before or after the roll former. If the bonding is to be limited to the edge areas, it is sufficient if a correspondingly narrow plastic tape with the hot-melt adhesive layer runs in on both sides of the roller shutter rod.

Ergänzend zur Schmelzklebeschicht kann die stoffschlüssige Verbindung auch durch eine Schweißverbindung gebildet sein.In addition to the hot-melt adhesive layer, the integral connection can also be formed by a welded connection.

Vorzugsweise ist die stoffschlüssige Verbindung in einem der Anschlußbereiche vorgesehen, wobei auch beide Anschlußbereiche entsprechend fixiert werden können.The integral connection is preferably provided in one of the connection areas, both connection areas also being able to be fixed accordingly.

In einer anderen Ausführungsform der Erfindung sind die mindestens zwei Aluminiumbandlagen durch die Innenwandung und die Außenwandung gebildet, die an einer Kontaktstelle zu der stoffschlüssigen Verbindung zusammengeführt sind. Dadurch wird erreicht, daß nicht nur die Flächen im Anschlußbereich mechanisch fixiert sind, sondern der Mittelbereich des Hohlkörperprofils an mindestens einem Punkt zur Erhöhung der Biegesteifigkeit verfestigt ist. Hierdurch wird auch das Resonanzverhalten des Rolladenstabes verändert und damit die Schalldämpfung verbessert.In another embodiment of the invention, the at least two aluminum strip layers are formed by the inner wall and the outer wall, which are brought together at a contact point to form the integral connection. It is thereby achieved that not only the surfaces in the connection area are mechanically fixed, but the central area of the hollow body profile is solidified at at least one point to increase the bending stiffness. This also changes the resonance behavior of the roller shutter slat and thus improves sound absorption.

Bevorzugt wird die zwischen Innenwandung und Außenwandung erfolgende Fixierung dadurch erreicht, daß die Innenwandung in Richtung auf die Außenwandung verformt wird, so daß sich im Bereich der Kontaktstelle in Bezug auf die Innenwandung ein geringerer Biegeradius ergibt als bei der Außenwandung.The fixing between the inner wall and outer wall is preferably achieved by deforming the inner wall in the direction of the outer wall, so that there is a smaller bending radius in the area of the contact point with respect to the inner wall than in the case of the outer wall.

Der formstabilisierte Rolladenstab gemäß der Erfindung wird vorzugsweise aus Aluminiumbandmaterial rollgeformt, welches eine Dicke zwischen 0,15 und 0,8 mm aufweist.The form-stabilized roller shutter slat according to the invention is preferably roll-formed from aluminum strip material which has a thickness between 0.15 and 0.8 mm.

Das erfindungsgemäße Verfahren zur Herstellung eines formstabilisierten Rolladenstabes beinhaltet zur Lösung der zugrundeliegenden Aufgabe die Verfahrensschritte, daß die doppellagigen Aluminiumbandflächen im Bereich der Anschlußenden zumindest teilweise stoffschlüssig miteinander verbunden werden, indem die als Haftmedium ausgebildete Kunststoffschicht durch Wärmeeinwirkung verfestigt wird.To achieve the underlying object, the method according to the invention for producing a dimensionally stabilized roller shutter rod includes the method steps that the double-layer aluminum strip surfaces in the area of the connection ends are at least partially bonded to one another by the plastic layer designed as an adhesive medium being solidified by the action of heat.

Ergänzend zum Verfahrensschritt der Formung des Hohlkörperprofils ist also erfindungsgemäß vorgesehen, daß dort, wo mindestens zwei Aluminiumbandlagen benachbart sind, diese durch eine stoffschlüssige Verbindung gegeneinander fixiert werden, so daß keine Bewegung der Bandlagen im Bereich ihrer Kontaktstelle mehr möglich ist. Hierdurch ergibt sich die gewünschte Verfestigung des RolladenstabesIn addition to the process step of shaping the hollow body profile, the invention therefore provides that where at least two aluminum strip layers are adjacent, these are fixed against each other by a material connection, so that no more movement of the belt layers in the area of their contact point is possible. This results in the desired solidification of the roller shutter bar

Vorzugsweise besteht der Kunststoff aus einem Haftmedium, wobei die zum Hohlkörperprofil geformten Aluminiumbandlagen in zumindest einem der beiden Anschlußbereiche unter Druck gehalten werden, bis eine stoffschlüssige Verbindung entsteht.The plastic preferably consists of an adhesive medium, the aluminum strip layers formed to form the hollow body profile being held under pressure in at least one of the two connection regions until a cohesive connection is produced.

Wenn die Kunststoffschicht aus einem Schmelzkleber besteht und das zum Hohlkörperprofil geformte Aluminiumband nach einer Erwärmung im Bereich der doppellagigen Anschlußbereiche verklebt oder verschweißt wird, ergibt sich durch den Stoffschluß der Klebeverbindung eine besonders hohe Biegesteifigkeit.If the plastic layer consists of a hot-melt adhesive and the aluminum strip formed into the hollow body profile is glued or welded after heating in the region of the double-layer connection areas, the material connection of the adhesive connection results in a particularly high bending stiffness.

Eine praktische Verfahrensweise ergibt sich dadurch, daß die Verklebung bzw. Verschweißung im Anschluß an die Rollformung des Hohlkörperprofils erfolgt. Es kann aber auch vorgesehen sein, daß die Erwärmung des Schmelzklebers während der Rollformung durch die Aufheizung des Aluminiumbandes erfolgt.A practical procedure results from the fact that the bonding or welding takes place after the roll forming of the hollow body profile. However, it can also be provided that the hot-melt adhesive is heated during roll forming by heating the aluminum strip.

Eine wichtige Verfahrensvariante ist darin zu sehen, daß die Innenwandung in Richtung der Außenwandung zur Ausbildung einer Kontaktstelle verformt wird.An important process variant can be seen in the fact that the inner wall is deformed in the direction of the outer wall to form a contact point.

Im folgenden wird die Erfindung anhand mehrerer Ausführungsbeispiele erläutert.The invention is explained below using several exemplary embodiments.

Es zeigen:

Fig. 1
Rolladenstab mit Haftmedium im Hohlprofil-Innenraum vollflächig beschichtet;
Fig. 2
Rolladenstab mit Haftmedium im Haken- und Ösenbereich zwischen Innen- und Außenwandung des Aluminiumbandes beschichtet;
Fig. 3
Rolladenstab mit Klebverbindung zwischen Innen- und Außenwandung des Hohlkörperprofils.
Show it:
Fig. 1
Roller shutter bar fully coated with adhesive medium in the hollow profile interior;
Fig. 2
Roller shutter rod coated with adhesive in the hook and eye area between the inner and outer walls of the aluminum strip;
Fig. 3
Roller shutter bar with adhesive connection between the inner and outer walls of the hollow body profile.

In Figur 1 ist der erfindungsgemäße Rolladenstab, bestehend aus dem Hohkörperprofil 1 und zwei Anschlußenden 2,3 mit entsprehendem Haken- und Ösenbereich 4,5 dargestellt. Der Rolladenstab ist durch Rollformen aus einem Aluminiumband 6 hergestellt worden, das auf der gesamten Innenseite des Hohlkörperprofils und auch zwischen den Anschlußenden mit einem Haftmedium 7 beschichtet ist.1 shows the roller shutter slat according to the invention, consisting of the hollow body profile 1 and two connecting ends 2, 3 with a corresponding hook and eye area 4, 5. The roller shutter rod has been produced by roll forming from an aluminum strip 6 which is coated with an adhesive medium 7 on the entire inside of the hollow body profile and also between the connection ends.

Das Haftmedium 7 kann durch Extrusionsbeschichtung, durch Auftragen einer Flüssigkeit oder durch Kaschieren mittels eines Polymer-Films erfolgen. Beim Rollformen wird das Haftmedium an den Anschlußenden aufeinander gepreßt und dadurch ein inniger Kontakt zwischen dem Haftmedium und dem Aluminiumband hergestellt. Durch Hitze-Einwirkung wird dieser Kontakt zu einer stoffschlüssigen Verbindung ausgebildet , die hohen mechanischen Belastungen standhält.The adhesive medium 7 can be carried out by extrusion coating, by applying a liquid or by lamination using a polymer film. In roll forming, the adhesive medium is pressed against one another at the connection ends, thereby producing an intimate contact between the adhesive medium and the aluminum strip. By exposure to heat, this contact is formed into a cohesive connection that can withstand high mechanical loads.

Zur Beschichtung der Aluminiumbänder hat sich ein Polyäthylen-Copolymer bewährt. Es ist vorteilhaft, wenn das Copolymer mit schallschluckenden Pigmenten versehen wird, die entweder in der flüssigen Phase beim Extrudieren auf das Aluminiumband aufgebracht werden oder bereits im fertigen Kaschiermedium enthalten sind. Durch die vollflächige Beschichtung des Hohlprofilinnenraums werden die schalldämpfenden Eigenschaften sehr verbessert. Die Beschichtung kann auch mit einem Polypropylen-Film erfolgen.A polyethylene copolymer has proven itself for coating the aluminum strips. It is advantageous if the copolymer is provided with sound-absorbing pigments which are either applied to the aluminum strip in the liquid phase during extrusion or are already present in the finished laminating medium. Due to the full area Coating the hollow profile interior, the sound-absorbing properties are greatly improved. The coating can also be done with a polypropylene film.

In Figur 2 ist das Haftmedium auf die Kontaktstellen 8,9,10 an den Anschlußenden beschränkt. Diese Variante stellt eine im Vergleich zu der in Fig. 1 dargestellten vollflächigen Beschichtung vereinfachte Ausführungsform dar, die aber hinsichtlich der Formstabilität gleichwertige Ergebnisse zeigt.In Figure 2, the adhesive medium is limited to the contact points 8,9,10 at the connection ends. This variant represents a simplified embodiment compared to the full-area coating shown in FIG. 1, but which shows equivalent results in terms of dimensional stability.

Der Vorteil dieser Lösung besteht in der vereinfachten Herstellung durch Verwendung entsprechend schmalerer kunststoffbeschichteter Bereiche an den Kontaktstellen.The advantage of this solution is the simplified production by using correspondingly narrower plastic-coated areas at the contact points.

Figur 3 zeigt nun zwischen der Außenwandung 13 und der Innenwandung 14 des Rolladenstabes eine kraftschlüssige Verbindung in Form einer Verklebung 15. Hierzu wurde das Aluminiumband im Mittelbereich der Innenwandung 14 soweit nach innen verformt, daß es eine Kontaktstelle mit der Außenwandung 13 bildet. An dieser Kontaktstelle kann ein vorher aufgetragener Haftvermittler die stoffschlüssige Verklammerung bewirken. Die Verklammerung kann punktweise an einer oder mehreren Stellen der Innen- und Außenwandung oder auch durchgehend linienförmig in Richtung der Längsachse folgen.Figure 3 now shows a non-positive connection in the form of an adhesive bond 15 between the outer wall 13 and the inner wall 14 of the roller shutter rod. For this purpose, the aluminum strip in the central region of the inner wall 14 was deformed inwards to such an extent that it forms a contact point with the outer wall 13. At this point of contact, a previously applied adhesion promoter can bring about the integral cohesion. The brackets can follow the point at one or more points of the inner and outer wall or also continuously in the form of a line in the direction of the longitudinal axis.

Neben der Verklebung 15 im Mittelbereich des Rolladenstabes sind noch Verklebungen 16,17,17a an den Anschlußenden vorgesehen. Verklebungen können grundsätzlich im kalten oder warmen Zustand hergestellt werden. Für höhere Festigkeitsanforderungen hat sich es jedoch als vorteilhaft herausgestellt, die mit einem Haftmedium versehenen Aluminiumbandbereiche unter Hitzeeinwirkung kraftschlüssig zu verbinden. Die Temperaturen liegen bei der Erwärmung der Haftmedien oberhalb von ca. 100° C und vorzugsweise im Bereich von 150 bis 200° C. Hierbei wird der Schmelzkleber aktiviert und die erreichte Festigkeit des Hohlkörperprofils entspricht dem eines mit PU-Schaum ausgeschäumten Profils gleicher Abmessung.In addition to the adhesive 15 in the central region of the roller shutter rod, adhesive bonds 16, 17, 17 a are also provided at the connection ends. In principle, bonds can be made in a cold or warm state. For higher strength requirements, however, it has proven to be advantageous to non-positively connect the aluminum strip regions provided with an adhesive medium under the action of heat. The temperatures are when the Adhesive media above approx. 100 ° C and preferably in the range from 150 to 200 ° C. Here, the hot melt adhesive is activated and the strength of the hollow body profile corresponds to that of a profile of the same dimension which is foamed with PU foam.

Die Erwärmung kann durch handelsübliche Mittel erfolgen, z.B. durch Infrarot- oder Induktionsheizelemente, die an geeigneter Stelle während Rollformung des erfindungegemäßen Rolladenstabes angebracht sind.The heating can be carried out by commercially available means, e.g. by infrared or induction heating elements which are attached at a suitable point during roll forming of the roller shutter rod according to the invention.

Das fertige Produkt muß danach gezielt abgekühlt werden, z.B. durch Anblassen mit Luft.The finished product must then be specifically cooled, e.g. by blowing with air.

Nach vollständiger Aushärtung können erfindungsgemäße Rolladenstäbe einer Sonneneinstrahlung mit Temperaturen von bis zu 80° C standhalten. Als Klebstoffe lassen sich alle geeigneten Harze, Acrylate und Schmelzklebstoffe wie z.B. Polyamide verwenden.After complete curing, roller shutter slats according to the invention can withstand solar radiation at temperatures of up to 80 ° C. All suitable resins, acrylates and hot melt adhesives such as e.g. Use polyamides.

Wie beschrieben, sind neben den Kontakstellen an den Anschlußenden des Rolladenstabes auch im Mittelbereich Kontakstellen an verschiedenen Stellen des Holkörperprofils möglich. Die Kontakstellen werden dadurch erzeugt, daß das ursprünglich parallel laufende Aluminiumband zwischen den Anschlußenden des Rolladenstabes im Mittelbereich des Hohlkörperprofils verformt wird.As described, in addition to the contact points on the connecting ends of the roller shutter rod, contact points are also possible in the central region at various points on the hollow body profile. The contact points are produced in that the originally parallel aluminum strip is deformed between the connecting ends of the roller shutter rod in the central region of the hollow body profile.

Vorzugsweise wird die Innenwandung 14 des Hohlkörperprofils 18 derart verformt, daß eine Kontakstelle 15 mit der Außenwandung 13 entsteht. Es kann aber auch die Außenwandung 13 z.B. sickenförmig verformt werden, wobei der Sickenboden eine Kontakstelle mit der Innenwandung 14 des Hohlkörperprofils 18 bildet. Darüber hinaus lassen sich auch beide Wandungen 13,14 gleichzeitig verformen, wenn dies aus Gründen der Festigkeit bzw. zur Stabilitätserhöhung zweckmäßig ist.The inner wall 14 of the hollow body profile 18 is preferably deformed in such a way that a contact point 15 with the outer wall 13 is created. However, the outer wall 13 can also be deformed, for example, in a bead-like manner, the bead bottom forming a contact point with the inner wall 14 of the hollow body profile 18. Beyond that too Deform both walls 13, 14 at the same time if this is expedient for reasons of strength or to increase stability.

Wie eingangs erläutert, können bei der Herstellung der stoffschlüssigen Verbindung Kunststoffe und insbesondere Schmelzkleber eingesetzt werden. Diese werden unter Wärmeeinwirkung verschweißt (Kunststoffe) bzw. verklebt (Schmelzkleber). Neben den in der Beschreibung erwähnten Copolymeren wie Polyäthylen können auch Polypropylen-Film verwendet werden.As explained at the beginning, plastics and in particular hot-melt adhesive can be used in the production of the integral connection. These are welded under the influence of heat (plastics) or glued (hot melt adhesive). In addition to the copolymers mentioned in the description, such as polyethylene, polypropylene film can also be used.

Claims (13)

  1. Roller shutter slat of stable form consisting of an aluminum band one-sided coated with plastics and roll formed with connecting ends with the coated side inward to a hollow body profile, the aluminum band consisting at least at the connecting ends of a double layer with intermediate plastic layer,
    characterized in that the band layers in the region of the double layer aluminum band are at least partially bonded to each other via the thermally consolidated plastic layer formed as adhesive medium.
  2. Roller shutter slat of stable form according to claim 1,
    characterized by the adhesive medium layer consisting of a fusion adhesive and the bonding connection being formed by the fusion adhesive layer activated under heat influence.
  3. Roller shutter slat of stable form according to claim 1 or 2,
    characterized by the hollow body profile having at least another contact point outside the region of the connecting ends, at which adjacent aluminum band surfaces form a bonded connection.
  4. Roller shutter slat of stable form according to claim 3,
    characterized by the contact point being formed between an inner wall deformed to the inner side of the outer wall and the nonworked outer wall of the hollow body.
  5. Method of producing a roller shutter slat of stable form according to one of the claims 1-4, for which aluminum band coated one-sided with plastics is roll formed to a hollow body profile with connecting ends, the coated side of the band in the hollow body being inward and the aluminum band being double layered at least at the connecting ends,
    characterized in that in the region of the connecting ends the double layer aluminum band surfaces are at least partially bonded to each other by consolidating thermally the plastic coating formed as adhesive medium.
  6. Method according to claim 5,
    characterized by keeping the segments of the aluminum band formed to a hollow body under pressure at least at the connecting ends until a bonded connection is formed under heat influence.
  7. Method according to claim 5 or 6,
    characterized by the adhesive medium layer consisting of a fusion adhesive and the deformed aluminum band being glued or welded over the intermediate adhesive medium layers after heating up.
  8. Method according to one of the claims 5 to 7,
    characterized by doing the conglutination respectively welding after the roll forming of the hollow body profile.
  9. Method according to one of the claims 5 to 8,
    characterized by doing the heating of the fusion adhesive by heating up the aluminum band during the roll forming.
  10. Method according to one of the claims 5 to 9,
    characterized by doing the heating by means of induction heating elements.
  11. Method according to one of the claims 5 to 10,
    characterized by doing the heating before bonding the aluminum band to the hollow body profile.
  12. Method according to one of the claims 5 to 11,
    characterized by deforming the inner wall of the slat of blind so that it forms at least one contact point with the outer wall of the roller shutter slat.
  13. Method according to claim 12,
    characterized by the coated and deformed aluminum band being bonded at the contact points between inner and outer wall of the roller shutter slat.
EP91103444A 1990-03-12 1991-03-07 Roller shutter slat of stable form and its method of fabrication Revoked EP0446778B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91103444T ATE92581T1 (en) 1990-03-12 1991-03-07 FORM-STABILIZED ROLLER SHUTTER BAR AND PROCESS FOR ITS MANUFACTURE.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4007777 1990-03-12
DE4007777 1990-03-12
DE4036410A DE4036410A1 (en) 1990-03-12 1990-11-15 SHAPED ROLLER SHUTTER ROD AND METHOD FOR THE PRODUCTION THEREOF
DE4036410 1990-11-15

Publications (3)

Publication Number Publication Date
EP0446778A2 EP0446778A2 (en) 1991-09-18
EP0446778A3 EP0446778A3 (en) 1992-05-06
EP0446778B1 true EP0446778B1 (en) 1993-08-04

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EP91103444A Revoked EP0446778B1 (en) 1990-03-12 1991-03-07 Roller shutter slat of stable form and its method of fabrication

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US (1) US5204147A (en)
EP (1) EP0446778B1 (en)
JP (1) JPH0626287A (en)
AT (1) ATE92581T1 (en)
DE (2) DE4036410A1 (en)
DK (1) DK0446778T3 (en)
ES (1) ES2044632T3 (en)
LV (1) LV10734A (en)
RU (1) RU2039866C1 (en)

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RU2752887C1 (en) * 2020-12-08 2021-08-11 Акционерное общество "Научно-производственное объединение специальных материалов" (АО "НПО Спецматериалов") Burglar-proof roller shutters

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Also Published As

Publication number Publication date
JPH0626287A (en) 1994-02-01
DE59100235D1 (en) 1993-09-09
ES2044632T3 (en) 1994-01-01
AU637877B2 (en) 1993-06-10
RU2039866C1 (en) 1995-07-20
DK0446778T3 (en) 1993-12-27
US5204147A (en) 1993-04-20
EP0446778A3 (en) 1992-05-06
DE4036410C2 (en) 1992-12-17
ATE92581T1 (en) 1993-08-15
DE4036410A1 (en) 1991-09-19
EP0446778A2 (en) 1991-09-18
LV10734A (en) 1995-06-20
AU7280791A (en) 1991-09-12

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