EP3494827A1 - Adhesive closing part - Google Patents

Adhesive closing part Download PDF

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Publication number
EP3494827A1
EP3494827A1 EP18208101.8A EP18208101A EP3494827A1 EP 3494827 A1 EP3494827 A1 EP 3494827A1 EP 18208101 A EP18208101 A EP 18208101A EP 3494827 A1 EP3494827 A1 EP 3494827A1
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EP
European Patent Office
Prior art keywords
adhesive
closure part
part according
adhesive closure
interlocking elements
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.)
Granted
Application number
EP18208101.8A
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German (de)
French (fr)
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EP3494827B1 (en
Inventor
Konstantinos Poulakis
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.)
Gottlieb Binder GmbH and Co KG
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Gottlieb Binder GmbH and Co KG
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Application filed by Gottlieb Binder GmbH and Co KG filed Critical Gottlieb Binder GmbH and Co KG
Publication of EP3494827A1 publication Critical patent/EP3494827A1/en
Application granted granted Critical
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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
    • A44B18/0069—Details
    • A44B18/0076—Adaptations for being fixed to a moulded article during moulding
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
    • A44B18/0069—Details
    • A44B18/0073—Attaching means

Definitions

  • the invention relates to an adhesive closure part, comprising a first carrier tape with interlocking elements arranged on this side and with a second carrier strip which, on its side facing away from the interlocking elements, has a connecting means for adhering a molded foam.
  • Adhesive fasteners have proven in many areas as a detachable and functionally reliable connection and locking technology. For inserts for air or vehicle seats, they serve, inter alia, to attach seat covers to foam body parts, consisting of a molded foam, wherein the respective one adhesive closure parts are foamed into the cushion foam material during manufacture of the respective seat and the respective other adhesive closure member with the corresponding hooking elements fixed to the upholstery material, in particular sewn.
  • the adhesive closure parts are inserted into so-called receiving pipes of a foam mold, and by introducing foam material into the free cross sections of the foam mold, preferably by introducing polyurethane (PU) foam, the adhesive closure parts are fastened to the foam body parts during the foaming process.
  • PU polyurethane
  • said known solution provides a lip seal between the wall parts which laterally delimit the mold cavity of the receiving whistle. This is formed by the fact that the carrier tape, which has on its upper side the connecting means for adhering the molded foam, is folded around itself in its free side edge regions, so that abuts the carrier tape with a double layer of material as a lip seal when applied to the receiving whistle closure part.
  • the achievable sealing effect leaves something to be desired, even if the double layer is flush and flush with the top of the foam mold.
  • the invention has the object to provide an adhesive closure part of the type mentioned above, which has an improved sealing effect against the introduced in a foam mold foam.
  • a significant feature of the invention is that the interlocking elements are at least partially covered by a cover film which is detachably connected to components of the adhesive closure part.
  • the cover has an adhesive, in particular in the form of a pressure-sensitive adhesive, on its side facing the hooking elements, wherein the covering film can be connected in a detachable manner with its two longitudinal edges to the two associated longitudinal edges of the second backing strip along a connection zone at the edge protrudes beyond the first carrier tape, and wherein the connection zone is arranged on the side facing away from the connecting means of the second carrier tape.
  • an adhesive in particular in the form of a pressure-sensitive adhesive
  • the adhesive of the covering film may be in contact with the front ends of the interlocking elements, or a protective layer may be inserted between the front ends of the interlocking elements and the covering film.
  • the protective layer can be formed from a foil material or from a ferrous nonwoven material.
  • the iron-containing nonwoven material in combination with permanent-magnetic elements of the foam mold can form a magnetic holding device for fixing the adhesive closure part in the foam mold.
  • the iron-containing nonwoven material can also be provided on its front side facing the hooking elements with adhesive, in particular in the form of the pressure-sensitive adhesive, thus assuming the function of the cover film itself, which is detachably connected by means of the pressure-sensitive adhesive to the two associated longitudinal edges of the second carrier strip along the connection zone.
  • a protective layer may be arranged between the covering film formed from iron-containing nonwoven material and the interlocking elements, which protects the interlocking elements from an application of the pressure-sensitive adhesive of the nonwoven material.
  • the two carrier tapes can be connected to one another on their mutually facing sides with an adhesive, in particular in the form of a polyurethane-containing adhesive.
  • an iron wire can be inserted into the adhesive between the two carrier tapes.
  • the connecting means on one side of the second carrier tape may be formed from a plurality of projecting single rods, which ensure the adhesion of the molded foam free of additional projections.
  • the invention is also a precursor for a fastener closure part according to one of the claims 1 to 9, having the features of claim 10.
  • the invention further provides for the use of an adhesive closure part according to one of claims 1 to 9 in a foaming mold, in particular for producing motor vehicle seat cushions, with a receiving whistle, in which the interlocking elements can be inserted covered with the covering film, wherein Connecting the molded foam with the connecting means to form the seat cushion and after removal from the foam mold and after removing the cover, the Verhakungsetti are exposed.
  • Fig. 1 is a receiving whistle designated 2, which is part of a foam mold, otherwise not shown.
  • the receiving whistle 2 has a mold cavity 4 in the form of a recess whose free cross-section is adapted to be absorbed in this adhesive closure member 6.
  • the adhesive closure part 6 has a flat carrier tape 10, on one side of which adhesive elements are arranged. These are formed in the illustrated example by (in the drawing only partially numbered) mushroom heads 12, which are located on the carrier tape 10 projecting stems. This may be a so-called adhesive fastener in which 200 to 400 hooking elements and more per cm 2 are provided on the carrier tape 10.
  • This may be formed by a polyamide base fabric with polypropylene stems on which the mushroom heads 12 are formed by thermal processing.
  • the carrier 10 with the mushroom heads 12 may also consist of an injection-molded plastic profile. While in the example shown, the interlocking elements are formed by mushroom heads 12, the interlocking elements can also be formed by loops or loops of a loop material. Adhesive closures of this type with mushroom heads 12 as interlocking elements are available from the applicant on the market under the product name Pressotex® and with interlocking elements in the form of a fluff material under the product name Klettostar®.
  • the carrier tape 10 is fixedly connected at its side remote from the hooking elements via an adhesive layer 14 with a second carrier tape 16.
  • the adhesive layer 14 consists in the present example of a moisture-curing, polyurethane-containing adhesive.
  • an iron wire 18 is embedded centrally, which extends over the entire, perpendicular to the plane of the drawing length of the adhesive closure part 6.
  • the iron wire forms 18, a magnetic holding device, which fixes the adhesive closure part 6 in the receiving whistle 2.
  • the second carrier tape 16 fastened via the adhesive layer 14 is an injection-molded plastic profile which, on the side remote from the adhesive layer 14, has not all round projections 20 in the form of free-standing rods.
  • the second carrier tape 16 has a greater width than the first carrier tape 10 and stands with one side strip 22, which have the same width, on the first carrier tape 10 laterally. With the side facing away from the projections 20, these strips 22 each form a connection zone 24, to which a covering film 26 is releasably attachable.
  • This is formed in the present example by a film, for example of polyester, which is provided in the manner of an adhesive tape with a pressure-sensitive adhesive 28, with which it is adhesively bonded with its longitudinal edges at the connection zones 24 of the side strips 22 of the second carrier tape 16.
  • the Fig. 2a shows a second embodiment of the invention Haftver gleichteils in semi-finished state.
  • the second embodiment corresponds to the first embodiment of Fig. 1
  • a protective layer 38 is placed. This is through a film, for example made of polyester, formed, whose width corresponds to the width of the first carrier tape 10.
  • the cover sheet 26 with the protective layer 38 applied to the mushroom heads 12, but not yet by moving the side edges of the cover sheet 26, as indicated by arrows 36, adhered to the connection zones 24 of the side strips 22 of the second carrier tape 16.
  • the protective layer 38 extending over the entire width of the first carrier tape 10 protects the mushroom heads 12 from an application of the pressure-sensitive adhesive 28 of the cover film 26.
  • the Fig. 2b shows the consisting of cover sheet 26 and protective layer 38 unit as a prefabricated precursor 30.
  • This has a protective tape 32 in the form of a non-adhesive film, which covers the protective layer 38 and the same width as the cover 26 has, so that the protective tape 32 laterally over the Protective layer 38 protrudes.
  • the protective tape 32 is therefore glued to the cover sheet 26 along the side strip.
  • the precursor 30 thus formed is after the detachment of the protective tape 32 and its disposal as a lost component for the completion of the embodiment of Fig. 2a to disposal.
  • the Fig. 3 shows a third embodiment, which differs from the example of Fig. 2a differs by another embodiment of the magnetic holding device.
  • the protective layer 38 provided for protecting the mushroom heads 12 from an adhesive application of the pressure-sensitive adhesive 28 of the cover film 26 in the previous exemplary embodiment is in the example of FIG Fig. 3 formed by an iron-containing nonwoven material 40. This also replaces the iron wire 18 of the first two embodiments embedded in the adhesive layer 14.
  • the Fig. 4a shows a fourth embodiment, which, like the Fig. 2a , the adhesive closure part 6 is in the partially manufactured state.
  • a precursor 42 is provided which in Fig. 4b shown and in addition to the lost protective tape 32 in succession, the protective layer 38 which protects the mushroom heads 12 from adhesive application, and the iron-containing nonwoven material 40 having an adhesive layer 42 on the side of the protective layer 38, for example in the form of the pressure-sensitive adhesive 28.
  • Das ferrous Nonwoven material 40 has the same width as the lost protective tape 32 and laterally over the intermediate protective layer 38, so that the side strips of the protective tape 32 by applying, as indicated by the arrows 34, releasably bondable with the iron-containing nonwoven material 40.
  • the precursor 42 to complete the embodiment of Fig. 4a to disposal After applying the side strips of the iron-containing nonwoven material 40 to the second carrier tape 16 and bonding with its side strips in the connection zones 24, the iron-containing nonwoven material 40 forms the cover, which forms the tight enclosure for the mushroom heads 12 in the same function as the cover film 26 of the first embodiments.

Landscapes

  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Seats For Vehicles (AREA)

Abstract

2. Ein Haftverschlussteil, mit einem ersten Trägerband (10) mit auf diesem auf einer Seite angeordneten Verhakungselementen (12) und mit einem zweiten Trägerband (16), das auf seiner den Verhakungselementen (12) (abgewandten Seite ein Verbindungsmittel (20) zum Anhaften eines Formschaums aufweist, ist dadurch gekennzeichnet, dass die Verhakungselemente (12) zumindest zeitweise von einer Abdeckfolie (26) abgedeckt sind, die in ablösbarer Weise mit Komponenten des Haftverschlussteils (6) verbunden ist.2. An adhesive fastener part, with a first carrier tape (10) with hooking elements (12) arranged on this on one side and with a second carrier tape (16) which has a connecting means (20) for adhering on its hooking elements (12) (side facing away) of a molded foam is characterized in that the interlocking elements (12) are at least temporarily covered by a cover film (26) which is detachably connected to components of the adhesive fastener part (6).

Description

Die Erfindung betrifft ein Haftverschlussteil, mit einem ersten Trägerband mit auf diesem auf einer Seite angeordneten Verhakungselementen und mit einem zweiten Trägerband, das auf seiner den Verhakungselementen abgewandten Seite ein Verbindungsmittel zum Anhaften eines Formschaums aufweist.The invention relates to an adhesive closure part, comprising a first carrier tape with interlocking elements arranged on this side and with a second carrier strip which, on its side facing away from the interlocking elements, has a connecting means for adhering a molded foam.

Haftverschlussteile haben sich auf vielen Gebieten als eine lösbare und funktionssichere Verbindungs- und Verschlusstechnik bewährt. Bei Einsätzen für Flug- oder Fahrzeugsitze dienen sie unter anderem dazu, Sitzbezüge an Schaumkörperteilen, bestehend aus einem Formschaum, zu befestigen, wobei die jeweils einen Haftverschlussteile in das Polsterschaummaterial beim Herstellen des jeweiligen Sitzes mit eingeschäumt werden und das jeweilige andere Haftverschlussteil mit den korrespondierenden Verhakungselementen am Polsterbezugsmaterial festgelegt, insbesondere festgenäht wird. Bei der Herstellung der Schaumkörperteile werden die Haftverschlussteile in sog. Aufnahmepfeifen einer Einschäumform eingelegt, und durch Einbringen von Schaummaterial in die freien Querschnitte der Einschäumform, vorzugsweise durch Einbringen von Polyurethan(PU)-Schaum, werden die Haftverschlussteile beim Einschäumvorgang an den Schaumkörperteilen befestigt. Das Dokument DE 10 2004 015 321 A1 offenbart ein durch einen Einschäumvorgang an Schaumkörperteilen zu befestigendes Haftverschlussteil der eingangs genannten Gattung.Adhesive fasteners have proven in many areas as a detachable and functionally reliable connection and locking technology. For inserts for air or vehicle seats, they serve, inter alia, to attach seat covers to foam body parts, consisting of a molded foam, wherein the respective one adhesive closure parts are foamed into the cushion foam material during manufacture of the respective seat and the respective other adhesive closure member with the corresponding hooking elements fixed to the upholstery material, in particular sewn. In the production of the foam body parts, the adhesive closure parts are inserted into so-called receiving pipes of a foam mold, and by introducing foam material into the free cross sections of the foam mold, preferably by introducing polyurethane (PU) foam, the adhesive closure parts are fastened to the foam body parts during the foaming process. The document DE 10 2004 015 321 A1 discloses a by a foaming process to foam body parts to be fastened fastener part of the aforementioned type.

Für die Funktionsfähigkeit der Haftverschlussteile ist es unabdingbar, dass die Verhakungselemente beim Einschäumvorgang gegen das Eindringen von Schaummaterial geschützt sind. Als Schaumbarriere, die verhindern soll, dass die Verhakungselemente durch eindringendes Schaummaterial verklebt und dadurch funktionsunfähig werden, sieht die genannte bekannte Lösung zwischen den Wandteilen, die die Formmulde der Aufnahmepfeife seitlich begrenzen, eine Lippendichtung vor. Diese ist dadurch gebildet, dass das Trägerband, das an seiner Oberseite das Verbindungsmittel für das Anhaften des Formschaums aufweist, in seinen freien Seitenrandbereichen um sich selbst umgefaltet ist, so dass bei an die Aufnahmepfeife angelegtem Haftverschlussteil das Trägerband mit einer doppelten Materiallage als Lippendichtung anliegt. Die erzielbare Abdichtwirkung lässt hierbei selbst dann zu wünschen übrig, wenn die Doppellage bündig und eben mit der Oberseite der Einschäumform abschließt.For the functionality of the adhesive closure parts, it is essential that the Verhakungselemente are protected during the Einschäumvorgang against the ingress of foam material. As a foam barrier, which is intended to prevent the hooking elements from sticking together due to the penetration of foam material and thus becoming inoperable, said known solution provides a lip seal between the wall parts which laterally delimit the mold cavity of the receiving whistle. This is formed by the fact that the carrier tape, which has on its upper side the connecting means for adhering the molded foam, is folded around itself in its free side edge regions, so that abuts the carrier tape with a double layer of material as a lip seal when applied to the receiving whistle closure part. The achievable sealing effect leaves something to be desired, even if the double layer is flush and flush with the top of the foam mold.

Im Hinblick auf diese Problematik stellt sich die Erfindung die Aufgabe, ein Haftverschlussteil der eingangs genannten Gattung zur Verfügung zu stellen, das eine verbesserte Abdichtwirkung gegenüber dem in einer Einschäumform einzubringenden Formschaum aufweist.In view of this problem, the invention has the object to provide an adhesive closure part of the type mentioned above, which has an improved sealing effect against the introduced in a foam mold foam.

Erfindungsgemäß ist diese Aufgabe durch ein Haftverschlussteil gelöst, das die Merkmale des Patentanspruchs 1 in seiner Gesamtheit aufweist.According to the invention, this object is achieved by an adhesive closure part having the features of claim 1 in its entirety.

Gemäß dem kennzeichnenden Teil des Anspruchs 1 besteht eine wesentliche Besonderheit der Erfindung darin, dass die Verhakungselemente zumindest teilweise von einer Abdeckfolie abgedeckt sind, die in ablösbarer Weise mit Komponenten des Haftverschlussteils verbunden ist. Dadurch, dass ein separates Dichtelement in Folienform vorgesehen ist, das beim Schäumvorgang die Verhakungselemente abdeckt, ist sichergestellt, dass die Verhakungselemente beim Schäumvorgang sicher vom Formschaum freigehalten sind, so dass die Verhakungselemente nach Beendigung des Schäumvorgangs und dem Ablösen der Abdeckfolie voll funktionsfähig sind.According to the characterizing part of claim 1, a significant feature of the invention is that the interlocking elements are at least partially covered by a cover film which is detachably connected to components of the adhesive closure part. The fact that a separate sealing element is provided in film form, which covers the Verhakungselemente during foaming, it is ensured that the Verhakungselemente are safely kept free of foaming during foaming, so that the Verhakungselemente after completion of the Foaming and peeling the cover are fully functional.

Bei vorteilhaften Ausführungsbeispielen weist die Abdeckfolie auf ihrer den Verhakungselementen zugewandten Seite einen Klebstoff, insbesondere in Form eines Haftklebers, auf, wobei die Abdeckfolie mit ihren beiden Längsrändern in wieder lösbarer Weise mit den beiden zugeordneten Längsrändern des zweiten Trägerbandes entlang einer Verbindungszone verbindbar ist, das hierfür randseitig über das erste Trägerband vorsteht, und wobei die Verbindungszone auf der dem Verbindungsmittel abgewandten Seite des zweiten Trägerbandes angeordnet ist.In advantageous embodiments, the cover has an adhesive, in particular in the form of a pressure-sensitive adhesive, on its side facing the hooking elements, wherein the covering film can be connected in a detachable manner with its two longitudinal edges to the two associated longitudinal edges of the second backing strip along a connection zone at the edge protrudes beyond the first carrier tape, and wherein the connection zone is arranged on the side facing away from the connecting means of the second carrier tape.

Hierbei kann der Klebstoff der Abdeckfolie in Berührung mit den stirnseitigen Enden der Verhakungselemente sein, oder zwischen den stirnseitigen Enden der Verhakungselemente und der Abdeckfolie kann eine Schutzlage eingelegt sein.In this case, the adhesive of the covering film may be in contact with the front ends of the interlocking elements, or a protective layer may be inserted between the front ends of the interlocking elements and the covering film.

Die Schutzlage kann aus einem Folienmaterial oder aus einem eisenhaltigen Vliesmaterial gebildet sein. Im letztgenannten Fall kann das eisenhaltige Vliesmaterial in Verbindung mit permanentmagnetischen Elementen der Einschäumform eine magnetische Halteeinrichtung zur Festlegung des Haftverschlussteils in der Einschäumform bilden.The protective layer can be formed from a foil material or from a ferrous nonwoven material. In the latter case, the iron-containing nonwoven material in combination with permanent-magnetic elements of the foam mold can form a magnetic holding device for fixing the adhesive closure part in the foam mold.

Das eisenhaltige Vliesmaterial kann auch auf seiner den Verhakungselementen zugewandten Stirnseite mit Klebstoff, insbesondere in Form des Haftklebers, versehen sein und so selbst die Funktion der Abdeckfolie übernehmen, die mittels des Haftklebers ablösbar mit den beiden zugeordneten Längsrändern des zweiten Trägerbandes entlang der Verbindungszone verbunden ist.The iron-containing nonwoven material can also be provided on its front side facing the hooking elements with adhesive, in particular in the form of the pressure-sensitive adhesive, thus assuming the function of the cover film itself, which is detachably connected by means of the pressure-sensitive adhesive to the two associated longitudinal edges of the second carrier strip along the connection zone.

Zwischen der aus eisenhaltigem Vliesmaterial gebildeten Abdeckfolie und den Verhakungselementen kann eine Schutzlage angeordnet sein, die die Verhakungselemente vor einer Antragung des Haftklebers des Vliesmaterials schützt.A protective layer may be arranged between the covering film formed from iron-containing nonwoven material and the interlocking elements, which protects the interlocking elements from an application of the pressure-sensitive adhesive of the nonwoven material.

Die beiden Trägerbänder können auf ihren einander zugewandten Seiten mit einem Klebstoff, insbesondere in Form eines polyurethanhaltigen Klebstoffs, miteinander verbunden sein.The two carrier tapes can be connected to one another on their mutually facing sides with an adhesive, in particular in the form of a polyurethane-containing adhesive.

Zur Bildung der magnetischen Halteeinrichtung zur Festlegung des Haftverschlussteils in der Einschäumform kann in den Klebstoff zwischen den beiden Trägerbändern ein Eisendraht eingelegt sein.To form the magnetic holding device for fixing the adhesive closure part in the foam mold, an iron wire can be inserted into the adhesive between the two carrier tapes.

Das Verbindungsmittel auf der einen Seite des zweiten Trägerbandes kann aus einer Vielzahl von vorstehenden Einzelstäbchen gebildet sein, die frei von zusätzlichen Vorsprüngen die Anhaftung des Formschaums gewährleisten.The connecting means on one side of the second carrier tape may be formed from a plurality of projecting single rods, which ensure the adhesion of the molded foam free of additional projections.

Gegenstand der Erfindung ist auch ein Vorprodukt für ein Haftverschlussteil nach einem der Patentansprüche 1 bis 9, das die Merkmale des Patentanspruchs 10 aufweist.The invention is also a precursor for a fastener closure part according to one of the claims 1 to 9, having the features of claim 10.

Gemäß dem Patentanspruch 11 ist Gegenstand der Erfindung des Weiteren die Verwendung eines Haftverschlussteils nach einem der Ansprüche 1 bis 9 in einer Schäumform, insbesondere zum Herstellen von Kraftfahrzeug-Sitzpolstern, mit einer Aufnahmepfeife, in die die Verhakungselemente abgedeckt mit der Abdeckfolie einlegbar sind, wobei nach Verbinden des Formschaums mit den Verbindungsmitteln unter Bildung des Sitzpolsters und nach Entnahme aus der Schäumform sowie nach Entfernen der Abdeckfolie die Verhakungselemente freigelegt sind.The invention further provides for the use of an adhesive closure part according to one of claims 1 to 9 in a foaming mold, in particular for producing motor vehicle seat cushions, with a receiving whistle, in which the interlocking elements can be inserted covered with the covering film, wherein Connecting the molded foam with the connecting means to form the seat cushion and after removal from the foam mold and after removing the cover, the Verhakungselemente are exposed.

Nachstehend ist die Erfindung anhand von in der Zeichnung dargestellten Ausführungsbeispielen im Einzelnen erläutert.The invention with reference to embodiments shown in the drawings will be explained in detail.

Es zeigen in jeweils stark vereinfachter, prinzipieller und nicht maßstäblicher Darstellung:

Fig. 1
in schematisch vereinfachter und nicht maßstäblicher Darstellung einen Ausschnitt einer Aufnahmepfeife für eine Einschäumform, wobei in deren Formmulde ein Haftverschlussteil gemäß einem Ausführungsbeispiel der Erfindung eingelegt ist;
Fig. 2a
in entsprechend vereinfachter Darstellung ein zweites Ausführungsbeispiel des erfindungsgemäßen Haftverschlussteils;
Fig. 2b
in entsprechend vereinfachter Darstellung ein Vorprodukt für die Herstellung des Ausführungsbeispiels von Fig. 2a;
Fig. 3
eine entsprechend vereinfachte Darstellung eines dritten Ausführungsbeispiels des erfindungsgemäßen Haftverschlussteils;
Fig. 4a
eine entsprechend vereinfachte Darstellung eines vierten Ausführungsbeispiels des erfindungsgemäßen Haftverschlussteils; und
Fig. 4b
in entsprechend vereinfachter Darstellung ein Vorprodukt für die Herstellung des Ausführungsbeispiels von Fig. 4a.
In each case they show a simplified, principled and not to scale representation:
Fig. 1
in a schematically simplified and not to scale representation of a section of a receiving whistle for a foaming mold, wherein in the mold cavity, an adhesive closure part is inserted according to an embodiment of the invention;
Fig. 2a
in accordance with a simplified representation of a second embodiment of the invention Haftverschlussteils;
Fig. 2b
in accordance with a simplified representation of a precursor for the production of the embodiment of Fig. 2a ;
Fig. 3
a correspondingly simplified representation of a third embodiment of the adhesive closure part according to the invention;
Fig. 4a
a correspondingly simplified representation of a fourth embodiment of the invention Haftverschlussteils; and
Fig. 4b
in accordance with a simplified representation of a precursor for the production of the embodiment of Fig. 4a ,

In Fig. 1 ist eine Aufnahmepfeife mit 2 bezeichnet, die Bestandteil einer im Übrigen nicht dargestellten Einschäumform ist. Die Aufnahmepfeife 2 weist eine Formmulde 4 in Form einer Ausnehmung auf, deren freier Querschnitt dem in dieser aufzunehmenden Haftverschlussteil 6 angepasst ist. Entlang der seitlichen Längsränder ist die Formmulde 4 durch ebenflächige Wandteile 8 begrenzt. Das Haftverschlussteil 6 weist ein flächiges Trägerband 10 auf, an dessen einer Seite Haftelemente angeordnet sind. Diese sind beim dargestellten Beispiel durch (in der Zeichnung nur teilweise bezifferte) Pilzköpfe 12 gebildet, die sich an vom Trägerband 10 abstehenden Stielen befinden. Hierbei kann es sich um einen sog. Haftverschluss handeln, bei dem 200 bis 400 Verhakungselemente und mehr pro cm2 am Trägerband 10 vorgesehen sind. Dieses kann durch ein Grundgewebe aus Polyamid mit Stielen aus Polypropylen gebildet sein, an denen die Pilzköpfe 12 durch thermische Bearbeitung ausgebildet sind. Der Träger 10 mit den Pilzköpfen 12 kann auch aus einem spritzgegossenen Kunststoffprofil bestehen. Während beim gezeigten Beispiel die Verhakungselemente durch Pilzköpfe 12 gebildet sind, können die Verhakungselemente auch durch Schlingen oder Schlaufen eines Schlaufenmaterials gebildet sein. Haftverschlüsse dieser Art mit Pilzköpfen 12 als Verhakungselemente sind unter der Produktbezeichnung Pressotex® und mit Verhakungselementen in Form eines Flauschmaterials unter der Produktbezeichnung Klettostar® jeweils von der Anmelderin auf dem Markt erhältlich.In Fig. 1 is a receiving whistle designated 2, which is part of a foam mold, otherwise not shown. The receiving whistle 2 has a mold cavity 4 in the form of a recess whose free cross-section is adapted to be absorbed in this adhesive closure member 6. Along the lateral longitudinal edges of the mold cavity 4 is limited by planar wall parts 8. The adhesive closure part 6 has a flat carrier tape 10, on one side of which adhesive elements are arranged. These are formed in the illustrated example by (in the drawing only partially numbered) mushroom heads 12, which are located on the carrier tape 10 projecting stems. This may be a so-called adhesive fastener in which 200 to 400 hooking elements and more per cm 2 are provided on the carrier tape 10. This may be formed by a polyamide base fabric with polypropylene stems on which the mushroom heads 12 are formed by thermal processing. The carrier 10 with the mushroom heads 12 may also consist of an injection-molded plastic profile. While in the example shown, the interlocking elements are formed by mushroom heads 12, the interlocking elements can also be formed by loops or loops of a loop material. Adhesive closures of this type with mushroom heads 12 as interlocking elements are available from the applicant on the market under the product name Pressotex® and with interlocking elements in the form of a fluff material under the product name Klettostar®.

Das Trägerband 10 ist an seiner von den Verhakungselementen abgewandten Seite über eine Klebstoffschicht 14 mit einem zweiten Trägerband 16 fest verbunden. Die Klebstoffschicht 14 besteht beim vorliegenden Beispiel aus einem feuchtigkeitsvernetzenden, polyurethanhaltigen Klebstoff. In die Klebstoffschicht 14 ist mittig ein Eisendraht 18 eingebettet, der sich über die gesamte, senkrecht zur Zeichnungsebene verlaufende Länge des Haftverschlussteils 6 erstreckt. In Verbindung mit in der Einschäumform befindlichen, nicht gezeigten permanentmagnetischen Elementen bildet der Eisendraht 18 eine magnetische Halteeinrichtung, die das Haftverschlussteil 6 in der Aufnahmepfeife 2 festlegt. Das über die Klebstoffschicht 14 befestigte zweite Trägerband 16 ist ein spritzgegossenes Kunststoffprofil, das an der von der Klebstoffschicht 14 abgewandten Seite angeformte, nicht sämtlich bezifferte runde Vorsprünge 20 in Form von freistehenden Stäbchen besitzt. Diese bilden ein Verbindungsmittel, das eine gute Anhaftung des Formschaums beim Einschäumvorgang gewährleistet. Wie der Zeichnung entnehmbar ist, hat das zweite Trägerband 16 eine größere Breite als das erste Trägerband 10 und steht mit je einem Seitenstreifen 22, die die gleiche Breite besitzen, über das erste Trägerband 10 seitlich vor. Mit der den Vorsprüngen 20 abgewandten Seite bilden diese Streifen 22 jeweils eine Verbindungszone 24, an der eine Abdeckfolie 26 ablösbar anbringbar ist. Diese ist beim vorliegenden Beispiel durch eine Folie, beispielsweise aus Polyester, gebildet, die in der Art eines Klebebandes mit einem Haftkleber 28 versehen ist, mit dem sie mit ihren Längsrändern an den Verbindungszonen 24 der Seitenstreifen 22 des zweiten Trägerbandes 16 ablösbar verklebt ist. Die Fig. 1 zeigt diesen Zustand, bei dem zur Vorbereitung eines Einschäumvorgangs das Haftverschlussteil 6 in die Aufnahmepfeife 2 zusammen mit der Abdeckfolie 26 eingelegt ist, die den gesamten Bereich der Verhakungselemente (Pilzköpfe 12) dicht einschließt und beim Schäumvorgang gegen den Eintritt von Formschaum schützt. Für die spätere Herstellung der Haftverbindung mit dem jeweils korrespondierenden anderen Haftverschlussteil stehen daher nach Ablösen der Abdeckfolie 26 die Verhakungselemente voll funktionsfähig zur Verfügung.The carrier tape 10 is fixedly connected at its side remote from the hooking elements via an adhesive layer 14 with a second carrier tape 16. The adhesive layer 14 consists in the present example of a moisture-curing, polyurethane-containing adhesive. In the adhesive layer 14, an iron wire 18 is embedded centrally, which extends over the entire, perpendicular to the plane of the drawing length of the adhesive closure part 6. In connection with the permanent mold elements not shown in the foam mold, the iron wire forms 18, a magnetic holding device, which fixes the adhesive closure part 6 in the receiving whistle 2. The second carrier tape 16 fastened via the adhesive layer 14 is an injection-molded plastic profile which, on the side remote from the adhesive layer 14, has not all round projections 20 in the form of free-standing rods. These form a connecting means which ensures good adhesion of the molded foam during the foaming process. As can be seen from the drawing, the second carrier tape 16 has a greater width than the first carrier tape 10 and stands with one side strip 22, which have the same width, on the first carrier tape 10 laterally. With the side facing away from the projections 20, these strips 22 each form a connection zone 24, to which a covering film 26 is releasably attachable. This is formed in the present example by a film, for example of polyester, which is provided in the manner of an adhesive tape with a pressure-sensitive adhesive 28, with which it is adhesively bonded with its longitudinal edges at the connection zones 24 of the side strips 22 of the second carrier tape 16. The Fig. 1 shows this state in which the adhesive closure member 6 is inserted into the receiving whistle 2 together with the cover sheet 26 to prepare a foaming process, which tightly encloses the entire region of Verhakungselemente (mushroom heads 12) and protects against foaming against the entry of molded foam. For the subsequent production of the adhesive bond with the respective other corresponding adhesive closure part, the interlocking elements are therefore fully functional after detachment of the cover film 26.

Die Fig. 2a zeigt ein zweites Ausführungsbeispiel des erfindungsgemäßen Haftverschlussteils in teilgefertigtem Zustand. Das zweite Ausführungsbeispiel entspricht dem ersten Ausführungsbeispiel von Fig. 1, abgesehen davon, dass die Abdeckfolie 26 mit ihrem Haftkleber 28 nicht unmittelbar an den Pilzköpfen 12 anliegt, sondern dass auf dem Haftkleber 28 eine Schutzlage 38 aufgelegt ist. Diese ist durch eine Folie, beispielsweise aus Polyester, gebildet, deren Breite der Breite des ersten Trägerbandes 10 entspricht. Bei dem teilgefertigten Zustand der Fig. 2a ist die Abdeckfolie 26 mit der Schutzlage 38 an die Pilzköpfe 12 angelegt, jedoch noch nicht durch Bewegen der Seitenränder der Abdeckfolie 26, wie mit Pfeilen 36 angedeutet, an den Verbindungszonen 24 der Seitenstreifen 22 des zweiten Trägerbandes 16 angeklebt. Die sich über die gesamte Breite des ersten Trägerbandes 10 erstreckende Schutzlage 38 schützt die Pilzköpfe 12 vor einem Antrag des Haftklebers 28 der Abdeckfolie 26.The Fig. 2a shows a second embodiment of the invention Haftverschlussteils in semi-finished state. The second embodiment corresponds to the first embodiment of Fig. 1 Apart from the fact that the cover sheet 26 with its pressure-sensitive adhesive 28 is not applied directly to the mushroom heads 12, but that on the pressure-sensitive adhesive 28, a protective layer 38 is placed. This is through a film, for example made of polyester, formed, whose width corresponds to the width of the first carrier tape 10. In the partially manufactured state of Fig. 2a is the cover sheet 26 with the protective layer 38 applied to the mushroom heads 12, but not yet by moving the side edges of the cover sheet 26, as indicated by arrows 36, adhered to the connection zones 24 of the side strips 22 of the second carrier tape 16. The protective layer 38 extending over the entire width of the first carrier tape 10 protects the mushroom heads 12 from an application of the pressure-sensitive adhesive 28 of the cover film 26.

Die Fig. 2b zeigt die aus Abdeckfolie 26 und Schutzlage 38 bestehende Einheit als vorgefertigtes Vorprodukt 30. Dieses weist ein Schutzband 32 in Form einer nichtklebenden Folie auf, die die Schutzlage 38 überdeckt und die gleiche Breite wie die Abdeckfolie 26 besitzt, so dass das Schutzband 32 seitlich über die Schutzlage 38 vorsteht. Durch Anlegen, wie mit Pfeilen 34 angedeutet, ist das Schutzband 32 daher mit der Abdeckfolie 26 entlang von deren Seitenstreifen verklebbar. Das so gebildete Vorprodukt 30 steht nach dem Ablösen des Schutzbandes 32 und dessen Entsorgen als verlorenes Bauteil für die Vervollständigung des Ausführungsbeispiels von Fig. 2a zur Verfügung.The Fig. 2b shows the consisting of cover sheet 26 and protective layer 38 unit as a prefabricated precursor 30. This has a protective tape 32 in the form of a non-adhesive film, which covers the protective layer 38 and the same width as the cover 26 has, so that the protective tape 32 laterally over the Protective layer 38 protrudes. By applying, as indicated by arrows 34, the protective tape 32 is therefore glued to the cover sheet 26 along the side strip. The precursor 30 thus formed is after the detachment of the protective tape 32 and its disposal as a lost component for the completion of the embodiment of Fig. 2a to disposal.

Die Fig. 3 zeigt ein drittes Ausführungsbeispiel, das sich vom Beispiel von Fig. 2a durch eine andere Ausbildung der magnetischen Halteeinrichtung unterscheidet. Die zum Schutz der Pilzköpfe 12 vor einem Klebstoffantrag des Haftklebers 28 der Abdeckfolie 26 beim vorherigen Ausführungsbeispiel vorgesehene Schutzlage 38 ist beim Beispiel von Fig. 3 durch ein eisenhaltiges Vliesmaterial 40 gebildet. Dieses ersetzt auch den in die Klebstoffschicht 14 eingebetteten Eisendraht 18 der ersten beiden Ausführungsbeispiele.The Fig. 3 shows a third embodiment, which differs from the example of Fig. 2a differs by another embodiment of the magnetic holding device. The protective layer 38 provided for protecting the mushroom heads 12 from an adhesive application of the pressure-sensitive adhesive 28 of the cover film 26 in the previous exemplary embodiment is in the example of FIG Fig. 3 formed by an iron-containing nonwoven material 40. This also replaces the iron wire 18 of the first two embodiments embedded in the adhesive layer 14.

Die Fig. 4a zeigt ein viertes Ausführungsbeispiel, das, wie die Fig. 2a, das Haftverschlussteil 6 im teilgefertigten Zustand darstellt. Wie beim zweiten Ausführungsbeispiel ist zur Bildung dieses Ausführungsbeispiels ein Vorprodukt 42 vorgesehen, das in Fig. 4b gezeigt ist und neben dem verlorenen Schutzband 32 in Aufeinanderfolge die Schutzlage 38, die die Pilzköpfe 12 vor Klebstoffantrag schützt, sowie das eisenhaltige Vliesmaterial 40 enthält, das auf der Seite der Schutzlage 38 eine Klebstoffschicht 42 aufweist, beispielsweise in Form des Haftklebers 28. Das eisenhaltige Vliesmaterial 40 hat die gleiche Breite wie das verlorene Schutzband 32 und steht seitlich über die dazwischenliegende Schutzlage 38 über, so dass die Seitenstreifen des Schutzbandes 32 durch Anlegen, wie mit den Pfeilen 34 angedeutet, mit dem eisenhaltigen Vliesmaterial 40 ablösbar verklebbar sind. Nach Ablösen des verlorenen Schutzbandes 32 steht das Vorprodukt 42 zur Vervollständigung des Ausführungsbeispiels von Fig. 4a zur Verfügung. Nach Anlegen der Seitenstreifen des eisenhaltigen Vliesmaterials 40 an das zweite Trägerband 16 und Verkleben mit dessen Seitenstreifen in den Verbindungszonen 24 bildet das eisenhaltige Vliesmaterial 40 die Abdeckfolie, die in gleicher Funktion wie die Abdeckfolie 26 der ersten Ausführungsbeispiele den dichten Einschluss für die Pilzköpfe 12 bildet.The Fig. 4a shows a fourth embodiment, which, like the Fig. 2a , the adhesive closure part 6 is in the partially manufactured state. Like the second one Embodiment, to form this embodiment, a precursor 42 is provided which in Fig. 4b shown and in addition to the lost protective tape 32 in succession, the protective layer 38 which protects the mushroom heads 12 from adhesive application, and the iron-containing nonwoven material 40 having an adhesive layer 42 on the side of the protective layer 38, for example in the form of the pressure-sensitive adhesive 28. Das ferrous Nonwoven material 40 has the same width as the lost protective tape 32 and laterally over the intermediate protective layer 38, so that the side strips of the protective tape 32 by applying, as indicated by the arrows 34, releasably bondable with the iron-containing nonwoven material 40. After detachment of the lost protective tape 32 is the precursor 42 to complete the embodiment of Fig. 4a to disposal. After applying the side strips of the iron-containing nonwoven material 40 to the second carrier tape 16 and bonding with its side strips in the connection zones 24, the iron-containing nonwoven material 40 forms the cover, which forms the tight enclosure for the mushroom heads 12 in the same function as the cover film 26 of the first embodiments.

Claims (11)

Haftverschlussteil, mit einem ersten Trägerband (10) mit auf diesem auf einer Seite angeordneten Verhakungselementen (12) und mit einem zweiten Trägerband (16), das auf seiner den Verhakungselementen (12) abgewandten Seite ein Verbindungsmittel (20) zum Anhaften eines Formschaums aufweist, dadurch gekennzeichnet, dass die Verhakungselemente (12) zumindest zeitweise von einer Abdeckfolie (26; 40) abgedeckt sind, die in ablösbarer Weise mit Komponenten des Haftverschlussteils (6) verbunden ist.Adhesive closure part, comprising a first carrier tape (10) with interlocking elements (12) arranged on this side and with a second carrier tape (16) having on its side facing away from the interlocking elements (12) a connecting means (20) for adhering a molded foam, characterized in that the interlocking elements (12) are at least temporarily covered by a covering film (26; 40) which is detachably connected to components of the adhesive closure part (6). Haftverschlussteil nach Anspruch 1, dadurch gekennzeichnet, dass die Abdeckfolie (26; 40) auf ihrer den Verhakungselementen (12) zugewandten Seite einen Klebstoff, insbesondere in Form eines Haftklebers (28; 42), aufweist, die mit ihren beiden Längsrändern in wieder lösbarer Weise mit den beiden zugeordneten Längsrändern (22) des zweiten Trägerbandes (16) entlang einer Verbindungszone (24) verbindbar ist, das hierfür randseitig über das erste Trägerband (10) vorsteht, und dass die Verbindungszone (24) auf der dem Verbindungsmittel (20) abgewandten Seite des zweiten Trägerbandes (16) angeordnet ist.3. Adhesive closure part according to claim 1, characterized in that on its side facing the hooking elements (12) , the covering film (26; 40) has an adhesive, in particular in the form of a pressure-sensitive adhesive (28; 42), with its two longitudinal edges in a detachable manner with the two associated longitudinal edges (22) of the second carrier tape (16) along a connection zone (24) is connectable, which protrudes edge over the first carrier tape (10), and that the connection zone (24) facing away from the connecting means (20) Side of the second carrier tape (16) is arranged. Haftverschlussteil nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Klebstoff (28; 42) der Abdeckfolie (26; 40) in Berührung ist mit den stirnseitigen Enden der Verhakungselemente (12) oder dass zwischen den stirnseitigen Enden der Verhakungselemente (12) und der Abdeckfolie (26; 40) eine Schutzlage (38) gelegt ist.An adhesive closure part according to claim 1 or 2, characterized in that the adhesive (28; 42) of the cover film (26; 40) is in contact with the front ends of the interlocking elements (12) or between the front ends of the interlocking elements (12) and Cover (26, 40) is placed a protective layer (38). Haftverschlussteil nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Schutzlage (38) aus einem Folienmaterial oder aus einem eisenhaltigen Vliesmaterial (40) gebildet ist.Adhesive closure part according to one of the preceding claims, characterized in that the protective layer (38) is formed from a foil material or from a ferrous nonwoven material (40). Haftverschlussteil nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Abdeckfolie selbst aus einem eisenhaltigen Vliesmaterial (40) gebildet ist, das auf seiner den Verhakungselementen (12) zugewandten Stirnseite mit Klebstoff, insbesondere in Form des Haftklebers (42), versehen ist.Adhesive closure part according to one of the preceding claims, characterized in that the cover film itself is formed from a ferrous nonwoven material (40), which is provided on its the Verhakungselementen (12) facing end side with adhesive, in particular in the form of the pressure-sensitive adhesive (42). Haftverschlussteil nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die aus eisenhaltigem Vliesmaterial gebildete Abdeckfolie (40) eine Schutzlage (38) zwischen ihr und den Verhakungselementen (12) aufweist.Adhesive closure part according to one of the preceding claims, characterized in that the covering film (40) formed from iron-containing nonwoven material has a protective layer (38) between it and the interlocking elements (12). Haftverschlussteil nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die beiden Trägerbänder (10, 16) auf ihren einander zugewandten Stirnseiten mit einem Klebstoff (14), insbesondere in Form eines polyurethanhaltigen Klebstoffs, miteinander verbunden sind.Adhesive closure part according to one of the preceding claims, characterized in that the two carrier tapes (10, 16) are connected to one another on their mutually facing end sides with an adhesive (14), in particular in the form of a polyurethane-containing adhesive. Haftverschlussteil nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass in den Klebstoff (14) zwischen den beiden Trägerbändern (10, 16) ein Eisendraht (18) eingelegt ist.Adhesive closure part according to one of the preceding claims, characterized in that an iron wire (18) is inserted into the adhesive (14) between the two carrier tapes (10, 16). Haftverschlussteil nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Verbindungsmittel auf der einen Seite des zweiten Trägerbandes (16) aus einer Vielzahl von vorstehenden Einzelstäbchen (20) gebildet ist, die frei von zusätzlichen Vorsprüngen die Anhaftung des Formschaums gewährleisten.Adhesive closure part according to one of the preceding claims, characterized in that the connecting means is formed on one side of the second carrier strip (16) of a plurality of projecting single rods (20), which ensure the adhesion of the molded foam free of additional projections. Vorprodukt für ein Haftverschlussteil nach einem der vorstehenden Ansprüche, bestehend aus der Abdeckfolie (26; 40) mit dem Klebstoffauftrag (28; 42) und der mittels des Klebstoffauftrags (28; 42) an der Abdeckfolie (26; 40) festgelegten Schutzlage (38), die die beiden gegenüberliegenden Längsränder der Abdeckfolie (26; 40) mit dem Klebstoffauftrag (28; 42) freilässt, sowie mit einem Schutzband (32), das die Schutzlage (38) übergreift und in wieder ablösbarer Weise über den randseitig freigelassenen Klebstoffauftrag (28; 42) mit der Abdeckfolie (26; 40) verbunden ist.Pre-product for an adhesive closure part according to one of the preceding claims, consisting of the covering film (26; 40) with the adhesive application (28; 42) and the protective layer (38) fixed by means of the adhesive application (28; 42) to the covering film (26; , which leaves free the two opposite longitudinal edges of the covering film (26, 40) with the application of adhesive (28, 42), and with a protective tape (32), which engages over the protective layer (38) and is connected to the cover film (26, 40) in a detachable manner again via the glue application (28, 42) left free on the edge. Verwendung eines Haftverschlussteils nach einem der Ansprüche 1 bis 9 in einer Schäumform, insbesondere zum Herstellen von Kraftfahrzeug-Sitzpolstern, mit einer Aufnahmepfeife (2), in die die Verhakungselemente (6) abgedeckt mit der Abdeckfolie (26; 40) einlegbar sind, wobei nach Verbinden des Formschaums mit dem Verbindungsmittel (20) unter Bildung des Sitzpolsters und nach Entnahme aus der Schäumform sowie nach Entfernen der Abdeckfolie (26; 40) die Verhakungselemente (12) freigelegt sind.Use of an adhesive closure part according to one of Claims 1 to 9 in a foaming mold, in particular for producing motor vehicle seat cushions, with a receiving whistle (2) into which the interlocking elements (6) can be inserted covered with the cover film (26; Connecting the molded foam with the connecting means (20) to form the seat cushion and after removal from the foaming mold and after removal of the cover film (26; 40) the Verhakungselemente (12) are exposed.
EP18208101.8A 2017-12-06 2018-11-23 System comprising a cover film and an adhesive closing part Active EP3494827B1 (en)

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