EP3494827B1 - System comprising a cover film and an adhesive closing part - Google Patents

System comprising a cover film and an adhesive closing part Download PDF

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Publication number
EP3494827B1
EP3494827B1 EP18208101.8A EP18208101A EP3494827B1 EP 3494827 B1 EP3494827 B1 EP 3494827B1 EP 18208101 A EP18208101 A EP 18208101A EP 3494827 B1 EP3494827 B1 EP 3494827B1
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EP
European Patent Office
Prior art keywords
adhesive
interlocking elements
covering film
carrier strip
foam
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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.)
Active
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EP18208101.8A
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German (de)
French (fr)
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EP3494827A1 (en
Inventor
Konstantinos Poulakis
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Gottlieb Binder GmbH and Co KG
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Gottlieb Binder GmbH and Co KG
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Publication of EP3494827A1 publication Critical patent/EP3494827A1/en
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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 a system consisting of a cover film and a touch-and-close fastener part with the features in the preamble of claim 1.
  • Hook and loop fastener parts have proven themselves in many areas as a detachable and functionally reliable connection and closure technology. When used for flight or vehicle seats, they are used, among other things, to attach seat covers to foam body parts consisting of a molded foam, with one adhesive fastener part being foamed into the upholstery foam material when the respective seat is manufactured, and the other adhesive fastener part in each case with the corresponding hooking elements fixed to the upholstery cover material, in particular is sewn.
  • the adhesive fastener parts are placed in so-called receiving pipes of a foaming mold, and by introducing foam material into the free cross sections of the foaming mold, preferably by introducing polyurethane foam (PU foam), the adhesive fastener parts are attached to the foam body parts during the foaming process .
  • PU foam polyurethane foam
  • the document DE 10 2004 015 321 A1 discloses a touch-and-close fastener part of the type mentioned at the outset that is to be fastened to foam body parts by a foaming process.
  • the known solution mentioned provides a lip seal between the wall parts that laterally delimit the shaped cavity of the receiving whistle.
  • the carrier strip which has the connecting means for adhering the molded foam on its upper side, is folded over itself in its free side edge areas, so that when the adhesive closure part is placed on the receiving whistle, the carrier strip with a double material layer rests as a lip seal. The sealing effect that can be achieved leaves a lot to be desired even if the double layer is flush and even with the top of the foaming mold.
  • the EP 0 168 240 A2 describes a system consisting of a cover film and a touch-and-close fastener part, with a first carrier tape with hooking elements arranged on one side and with a second carrier tape, which has a connecting means for adhering a molded foam on its side facing away from the hooking elements, the hooking elements at least temporarily being Covering film are covered, which is connected in a detachable manner with components of the fastener part.
  • the object of the invention is to provide a system of the type mentioned at the outset that has an improved sealing effect compared to the molded foam to be introduced in a foaming mold.
  • an essential feature of the invention is that the cover film itself is formed from an iron-containing fleece material which is provided with an adhesive on its end face facing the hooking elements.
  • the hooking elements are at least partially covered by a covering film which is connected to components of the touch-and-close fastener part in a detachable manner.
  • a separate sealing element in film form is provided, which covers the interlocking elements during the foaming process, ensures that the interlocking elements are kept free of the molded foam during the foaming process, so that the interlocking elements are fully functional after the foaming process is complete and the covering film has been detached.
  • the cover film has the adhesive on its side facing the hooking elements, in particular in the form of a pressure-sensitive adhesive, the cover film being releasably connectable with its two longitudinal edges to the two associated longitudinal edges of the second carrier tape along a connection zone that is protrudes at the edge beyond the first carrier strip, and wherein the connecting zone is arranged on the side of the second carrier strip facing away from the connecting means.
  • the adhesive of the cover film can be in contact with the front ends of the hooking elements, or a protective layer can be inserted between the front ends of the hooking elements and the cover film.
  • the protective layer can be formed from a foil material or from a non-woven material containing iron.
  • the iron-containing fleece material in conjunction with permanent magnetic elements of the foam mold, can form a magnetic holding device for fixing the touch-and-close fastener part in the foam mold.
  • the iron-containing fleece material is provided with adhesive on its end side facing the hooking elements, in particular in the form of the pressure-sensitive adhesive, and thus itself takes on the function of the cover film, which is detachably connected to the two associated longitudinal edges of the second carrier tape along the connection zone by means of the pressure-sensitive adhesive.
  • a protective layer can be arranged between the cover film made of iron-containing fleece material and the hooking elements, which protects the hooking elements from application of the pressure-sensitive adhesive of the fleece 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 strips.
  • the connecting means on one side of the second carrier strip can be formed from a multiplicity of protruding individual rods which, without additional protrusions, ensure the adhesion of the molded foam.
  • the subject matter of the invention is also the use of a touch-and-close fastener part according to one of claims 1 to 8 in a foam mold, in particular for the production of motor vehicle seat cushions, with a receiving pipe into which the hooking elements covered with the covering film can be inserted, whereby after connecting the molded foam with the connecting means to form the seat cushion and after removing it from the foam mold and after removing the Cover film the hooking elements are exposed.
  • a receiving whistle is denoted by 2, which is part of a foaming mold that is otherwise not shown.
  • the receiving whistle 2 has a mold cavity 4 in the form of a recess, the free cross section of which is adapted to the adhesive fastener part 6 to be received in this cavity.
  • the mold cavity 4 is delimited by planar wall parts 8 along the lateral longitudinal edges.
  • the touch-and-close fastener part 6 has a flat carrier strip 10 with adhesive elements arranged on one side. In the example shown, these are formed by mushroom heads 12 (only partially numbered in the drawing), which are located on stems protruding from the carrier tape 10 . This can 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 can be formed by a base fabric made of polyamide with handles made of polypropylene, on which the mushroom heads 12 are formed by thermal processing.
  • the carrier 10 with the mushroom heads 12 can also consist of an injection molded plastic profile. While the interlocking elements are formed by mushroom heads 12 in the example shown, the interlocking elements can also be formed by loops or loops of a loop material. Hook and loop fasteners of this type with mushroom heads 12 as hooking elements are available on the market from the applicant under the product name Pressotex® and with hooking elements in the form of a fleece material under the product name Klettostar® .
  • the carrier tape 10 is firmly connected to a second carrier tape 16 via an adhesive layer 14 on its side facing away from the hooking elements.
  • the adhesive layer 14 consists of a moisture-crosslinking, polyurethane-containing adhesive.
  • an iron wire 18 is embedded in the middle, which extends over the entire length of the touch-and-close fastener part 6 running perpendicularly to the plane of the drawing. In conjunction with permanent magnetic elements (not shown) located in the foaming mold, the iron wire 18 forms a magnetic holding device which fixes the adhesive closure part 6 in the receiving whistle 2 .
  • the second carrier strip 16 fastened via the adhesive layer 14 is an injection-molded plastic profile, which has round projections 20 in the form of free-standing rods, not all of which are numbered, formed on the side facing away from the adhesive layer 14 . These form a connection that ensures good adhesion of the molded foam during the foaming process.
  • the second carrier tape 16 has a greater width than the first carrier tape 10 and protrudes laterally over the first carrier tape 10 with one side strip 22 each having the same width. With the side facing away from the projections 20, these strips 22 each form a connection zone 24 to which a cover film 26 can be detachably attached.
  • this is formed by a film, for example made of polyester, which is provided with a pressure-sensitive adhesive 28 like an adhesive tape, with which it is detachably bonded with its longitudinal edges to the connecting zones 24 of the side strips 22 of the second carrier tape 16.
  • the 1 shows this state in which, in preparation for a foaming process, the adhesive closure part 6 is inserted into the receiving pipe 2 together with the cover film 26, which tightly encloses the entire area of the hooking elements (mushroom heads 12) and protects against the ingress of molded foam during the foaming process. After the cover film 26 has been detached, the hooking elements are therefore available in a fully functional manner for the later establishment of the adhesive connection with the respectively corresponding other adhesive fastener part.
  • the Figure 2a shows a further exemplary embodiment of a touch-and-close fastener part in a partially manufactured state.
  • the second embodiment corresponds to the embodiment of FIG 1 , apart from the fact that the cover foil 26 with its adhesive 28 does not rest directly on the mushroom heads 12, but that a protective layer 38 is placed on the adhesive 28.
  • This is formed by a foil, for example made of polyester, the width of which corresponds to the width of the first carrier tape 10 .
  • the cover film 26 with the protective layer 38 is applied to the mushroom heads 12, but not yet adhered to the connection zones 24 of the side strips 22 of the second carrier tape 16 by moving the side edges of the cover film 26, as indicated by arrows 36.
  • the protective layer 38 which extends over the entire width of the first carrier tape 10, protects the mushroom heads 12 from application of the pressure-sensitive adhesive 28 of the cover film 26.
  • the Figure 2b shows the unit consisting of cover film 26 and protective layer 38 as a prefabricated preliminary product 30.
  • This has a protective tape 32 in the form of a non-adhesive film that covers the protective layer 38 and has the same width as the cover film 26, so that the protective tape 32 extends laterally over the Protective layer 38 protrudes.
  • the protective tape 32 can therefore be bonded to the cover film 26 along its side strips.
  • the 3 shows an embodiment that differs from the example of FIG Figure 2a differs by a different design of the magnetic holding device.
  • the example of FIG 3 formed by a non-woven material 40 containing iron. This also replaces the iron wire 18 embedded in the adhesive layer 14 of the first two exemplary embodiments.
  • the Figure 4a shows an inventive embodiment that, like the Figure 2a , which represents the touch-and-close fastener part 6 in the partially manufactured state.
  • a preliminary product 42 is provided to form this exemplary embodiment, which in Figure 4b is shown and, in addition to the lost protective tape 32, contains in sequence the protective layer 38, which protects the mushroom heads 12 from adhesive application, and the ferrous fleece material 40, which has an adhesive layer 42 on the side of the protective layer 38, for example in the form of the pressure-sensitive adhesive 28.
  • the ferrous Fleece material 40 has the same width as the lost protective tape 32 and protrudes laterally beyond the intermediate protective layer 38, so that the side strips of the protective tape 32 can be releasably bonded to the iron-containing fleece material 40 by application, as indicated by the arrows 34.
  • the preliminary product 42 is available to complete the exemplary embodiment of FIG Figure 4a to disposal.
  • the iron-containing fleece material 40 forms the cover film, which forms the tight enclosure for the mushroom heads 12 in the same function as the cover film 26 of the previous exemplary embodiments.

Landscapes

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

Description

Die Erfindung betrifft ein System aus einer Abdeckfolie und einem Haftverschlussteil mit den Merkmalen im Oberbegriff von Anspruch 1.The invention relates to a system consisting of a cover film and a touch-and-close fastener part with the features in the preamble of claim 1.

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-Schaum (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.Hook and loop fastener parts have proven themselves in many areas as a detachable and functionally reliable connection and closure technology. When used for flight or vehicle seats, they are used, among other things, to attach seat covers to foam body parts consisting of a molded foam, with one adhesive fastener part being foamed into the upholstery foam material when the respective seat is manufactured, and the other adhesive fastener part in each case with the corresponding hooking elements fixed to the upholstery cover material, in particular is sewn. During the production of the foam body parts, the adhesive fastener parts are placed in so-called receiving pipes of a foaming mold, and by introducing foam material into the free cross sections of the foaming mold, preferably by introducing polyurethane foam (PU foam), the adhesive fastener parts are attached to the foam body parts during the foaming process . The document DE 10 2004 015 321 A1 discloses a touch-and-close fastener part of the type mentioned at the outset that is to be fastened to foam body parts by a foaming process.

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 touch-and-close fastener parts, it is essential that the interlocking elements are protected against the ingress of foam material during the foaming process. As a foam barrier, which is intended to prevent the interlocking elements from sticking together due to the ingress of foam material and thus becoming inoperable, the known solution mentioned provides a lip seal between the wall parts that laterally delimit the shaped cavity of the receiving whistle. This is formed in that the carrier strip, which has the connecting means for adhering the molded foam on its upper side, is folded over itself in its free side edge areas, so that when the adhesive closure part is placed on the receiving whistle, the carrier strip with a double material layer rests as a lip seal. The sealing effect that can be achieved leaves a lot to be desired even if the double layer is flush and even with the top of the foaming mold.

Die EP 0 168 240 A2 beschreibt ein System aus einer Abdeckfolie und einem 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, wobei die Verhakungselemente zumindest zeitweise von der Abdeckfolie abgedeckt sind, die in ablösbarer Weise mit Komponenten des Haftverschlussteils verbunden ist.the EP 0 168 240 A2 describes a system consisting of a cover film and a touch-and-close fastener part, with a first carrier tape with hooking elements arranged on one side and with a second carrier tape, which has a connecting means for adhering a molded foam on its side facing away from the hooking elements, the hooking elements at least temporarily being Covering film are covered, which is connected in a detachable manner with components of the fastener part.

Weitere Systeme mit einem Haftverschlussteil gehen aus der EP 0 621 118 A1 , der US 2014/0070579 A1 , der US 5 180 618 , der US 4 726 975 , der WO 86/03164 A1 und der WO 99/27811 A1 hervor.Other systems with a hook-and-loop fastener part are going out EP 0 621 118 A1 , the US 2014/0070579 A1 , the U.S. 5,180,618 , the U.S. 4,726,975 , the WO 86/03164 A1 and the WO 99/27811 A1 out.

Im Hinblick auf diese Problematik stellt sich die Erfindung die Aufgabe, ein System 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 object of the invention is to provide a system of the type mentioned at the outset that has an improved sealing effect compared to the molded foam to be introduced in a foaming mold.

Erfindungsgemäß ist diese Aufgabe durch ein System gelöst, das die Merkmale des Patentanspruchs 1 in seiner Gesamtheit aufweist.According to the invention, this object is achieved by a system that has the features of patent claim 1 in its entirety.

Gemäß dem kennzeichnenden Teil des Anspruchs 1 besteht eine wesentliche Besonderheit der Erfindung darin, dass die Abdeckfolie selbst aus einem eisenhaltigen Vliesmaterial gebildet ist, das auf seiner den Verhakungselementen zugewandten Stirnseite mit einem Klebstoff versehen ist.According to the characterizing part of claim 1, an essential feature of the invention is that the cover film itself is formed from an iron-containing fleece material which is provided with an adhesive on its end face facing the hooking elements.

Es ist ferner vorgesehen, 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.Provision is also made for the hooking elements to be at least partially covered by a covering film which is connected to components of the touch-and-close fastener part in a detachable manner. The fact that a separate sealing element in film form is provided, which covers the interlocking elements during the foaming process, ensures that the interlocking elements are kept free of the molded foam during the foaming process, so that the interlocking elements are fully functional after the foaming process is complete and the covering film has been detached.

Bei vorteilhaften Ausführungsbeispielen weist die Abdeckfolie auf ihrer den Verhakungselementen zugewandten Seite den 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 exemplary embodiments, the cover film has the adhesive on its side facing the hooking elements, in particular in the form of a pressure-sensitive adhesive, the cover film being releasably connectable with its two longitudinal edges to the two associated longitudinal edges of the second carrier tape along a connection zone that is protrudes at the edge beyond the first carrier strip, and wherein the connecting zone is arranged on the side of the second carrier strip facing away from the connecting means.

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.The adhesive of the cover film can be in contact with the front ends of the hooking elements, or a protective layer can be inserted between the front ends of the hooking elements and the cover 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 non-woven material containing iron. In the last-mentioned case, the iron-containing fleece material, in conjunction with permanent magnetic elements of the foam mold, can form a magnetic holding device for fixing the touch-and-close fastener part in the foam mold.

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

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 can be arranged between the cover film made of iron-containing fleece material and the hooking elements, which protects the hooking elements from application of the pressure-sensitive adhesive of the fleece 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 touch-and-close fastener part in the foamed-in mold, an iron wire can be inserted into the adhesive between the two carrier strips.

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 strip can be formed from a multiplicity of protruding individual rods which, without additional protrusions, ensure the adhesion of the molded foam.

Gemäß dem Patentanspruch 9 ist Gegenstand der Erfindung des Weiteren die Verwendung eines Haftverschlussteils nach einem der Ansprüche 1 bis 8 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.According to patent claim 9, the subject matter of the invention is also the use of a touch-and-close fastener part according to one of claims 1 to 8 in a foam mold, in particular for the production of motor vehicle seat cushions, with a receiving pipe into which the hooking elements covered with the covering film can be inserted, whereby after connecting the molded foam with the connecting means to form the seat cushion and after removing it from the foam mold and after removing the Cover film the hooking elements are exposed.

Nachstehend ist die Erfindung anhand von in der Zeichnung dargestellten Ausführungsbeispielen im Einzelnen erläutert. 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 eingelegt ist;
Fig. 2a
in entsprechend vereinfachter Darstellung ein Ausführungsbeispiel eines weiteren Haftverschlussteils;
Fig. 2b
in entsprechend vereinfachter Darstellung ein Vorprodukt für die Herstellung des Ausführungsbeispiels von Fig. 2a;
Fig. 3
eine entsprechend vereinfachte Darstellung eines Ausführungsbeispiels eines weiteren Haftverschlussteils;
Fig. 4a
eine entsprechend vereinfachte Darstellung eines Ausführungsbeispiels eines erfindungsgemäßen Haftverschlussteils; und
Fig. 4b
in entsprechend vereinfachter Darstellung ein Vorprodukt für die Herstellung des Ausführungsbeispiels von Fig. 4a.
The invention is explained in detail below with reference to exemplary embodiments illustrated in the drawing. They show in a greatly simplified, basic and not to scale representation:
1
in a schematically simplified representation that is not to scale, a section of a receiving whistle for a foaming mold, with an adhesive fastener part being inserted in the mold cavity;
Figure 2a
in a correspondingly simplified representation, an exemplary embodiment of a further touch-and-close fastener part;
Figure 2b
in a correspondingly simplified representation of a precursor for the production of the embodiment of Figure 2a ;
3
a correspondingly simplified representation of an exemplary embodiment of a further touch-and-close fastener part;
Figure 4a
a correspondingly simplified representation of an embodiment of a touch-and-close fastener part according to the invention; and
Figure 4b
in a correspondingly simplified representation of a precursor for the production of the embodiment of Figure 4a .

Die Ausführungsformen der Fig. 1 bis 3 dienen lediglich der Erläuterung des Hintergrundes der Erfindung und sind nicht Gegenstand eines Anspruches.The embodiments of Figures 1 to 3 are intended only to explain the background of the invention and are not the subject of any claim.

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 1 a receiving whistle is denoted by 2, which is part of a foaming mold that is otherwise not shown. The receiving whistle 2 has a mold cavity 4 in the form of a recess, the free cross section of which is adapted to the adhesive fastener part 6 to be received in this cavity. The mold cavity 4 is delimited by planar wall parts 8 along the lateral longitudinal edges. The touch-and-close fastener part 6 has a flat carrier strip 10 with adhesive elements arranged on one side. In the example shown, these are formed by mushroom heads 12 (only partially numbered in the drawing), which are located on stems protruding from the carrier tape 10 . This can 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 can be formed by a base fabric made of polyamide with handles made of polypropylene, on which the mushroom heads 12 are formed by thermal processing. The carrier 10 with the mushroom heads 12 can also consist of an injection molded plastic profile. While the interlocking elements are formed by mushroom heads 12 in the example shown, the interlocking elements can also be formed by loops or loops of a loop material. Hook and loop fasteners of this type with mushroom heads 12 as hooking elements are available on the market from the applicant under the product name Pressotex® and with hooking elements in the form of a fleece 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 firmly connected to a second carrier tape 16 via an adhesive layer 14 on its side facing away from the hooking elements. In the present example, the adhesive layer 14 consists of a moisture-crosslinking, polyurethane-containing adhesive. In the adhesive layer 14, an iron wire 18 is embedded in the middle, which extends over the entire length of the touch-and-close fastener part 6 running perpendicularly to the plane of the drawing. In conjunction with permanent magnetic elements (not shown) located in the foaming mold, the iron wire 18 forms a magnetic holding device which fixes the adhesive closure part 6 in the receiving whistle 2 . The second carrier strip 16 fastened via the adhesive layer 14 is an injection-molded plastic profile, which has round projections 20 in the form of free-standing rods, not all of which are numbered, formed on the side facing away from the adhesive layer 14 . These form a connection that 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 protrudes laterally over the first carrier tape 10 with one side strip 22 each having the same width. With the side facing away from the projections 20, these strips 22 each form a connection zone 24 to which a cover film 26 can be detachably attached. In the present example, this is formed by a film, for example made of polyester, which is provided with a pressure-sensitive adhesive 28 like an adhesive tape, with which it is detachably bonded with its longitudinal edges to the connecting zones 24 of the side strips 22 of the second carrier tape 16. the 1 shows this state in which, in preparation for a foaming process, the adhesive closure part 6 is inserted into the receiving pipe 2 together with the cover film 26, which tightly encloses the entire area of the hooking elements (mushroom heads 12) and protects against the ingress of molded foam during the foaming process. After the cover film 26 has been detached, the hooking elements are therefore available in a fully functional manner for the later establishment of the adhesive connection with the respectively corresponding other adhesive fastener part.

Die Fig. 2a zeigt ein weiteres Ausführungsbeispiel eines Haftverschlussteils in teilgefertigtem Zustand. Das zweite Ausführungsbeispiel entspricht dem 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 Figure 2a shows a further exemplary embodiment of a touch-and-close fastener part in a partially manufactured state. The second embodiment corresponds to the embodiment of FIG 1 , apart from the fact that the cover foil 26 with its adhesive 28 does not rest directly on the mushroom heads 12, but that a protective layer 38 is placed on the adhesive 28. This is formed by a foil, for example made of polyester, the width of which corresponds to the width of the first carrier tape 10 . In the partially finished state of Figure 2a the cover film 26 with the protective layer 38 is applied to the mushroom heads 12, but not yet adhered to the connection zones 24 of the side strips 22 of the second carrier tape 16 by moving the side edges of the cover film 26, as indicated by arrows 36. The protective layer 38, which extends over the entire width of the first carrier tape 10, protects the mushroom heads 12 from 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 Figure 2b shows the unit consisting of cover film 26 and protective layer 38 as a prefabricated preliminary product 30. This has a protective tape 32 in the form of a non-adhesive film that covers the protective layer 38 and has the same width as the cover film 26, so that the protective tape 32 extends laterally over the Protective layer 38 protrudes. By applying it, as indicated by arrows 34, the protective tape 32 can therefore be bonded to the cover film 26 along its side strips. After the protective tape 32 has been detached and disposed of as a lost component, the preliminary product 30 formed in this way completes the exemplary embodiment in FIG Figure 2a to disposal.

Die Fig. 3 zeigt ein 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 3 shows an embodiment that differs from the example of FIG Figure 2a differs by a different design of the magnetic holding device. In the example of FIG 3 formed by a non-woven material 40 containing iron. This also replaces the iron wire 18 embedded in the adhesive layer 14 of the first two exemplary embodiments.

Die Fig. 4a zeigt ein erfindungsgemäßes Ausführungsbeispiel, das, wie die Fig. 2a, das Haftverschlussteil 6 im teilgefertigten Zustand darstellt. Wie beim Ausführungsbeispiel der Fig. 2a 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 vorhergehenden Ausführungsbeispiele den dichten Einschluss für die Pilzköpfe 12 bildet.the Figure 4a shows an inventive embodiment that, like the Figure 2a , which represents the touch-and-close fastener part 6 in the partially manufactured state. As in the embodiment of Figure 2a a preliminary product 42 is provided to form this exemplary embodiment, which in Figure 4b is shown and, in addition to the lost protective tape 32, contains in sequence the protective layer 38, which protects the mushroom heads 12 from adhesive application, and the ferrous fleece material 40, which has an adhesive layer 42 on the side of the protective layer 38, for example in the form of the pressure-sensitive adhesive 28. The ferrous Fleece material 40 has the same width as the lost protective tape 32 and protrudes laterally beyond the intermediate protective layer 38, so that the side strips of the protective tape 32 can be releasably bonded to the iron-containing fleece material 40 by application, as indicated by the arrows 34. After the lost protective tape 32 has been detached, the preliminary product 42 is available to complete the exemplary embodiment of FIG Figure 4a to disposal. After the side strips of the iron-containing fleece material 40 have been placed on the second carrier strip 16 and glued to its side strips in the connection zones 24, the iron-containing fleece material 40 forms the cover film, which forms the tight enclosure for the mushroom heads 12 in the same function as the cover film 26 of the previous exemplary embodiments.

Claims (9)

  1. System comprising a covering film (40) and an adhesive closure part (6), having a first carrier strip (10) with interlocking elements (12) arranged on one side of said strip and having a second carrier strip (16) comprising a connecting means (20) for the purpose of attaching a moulded foam on the side of said strip facing away from the interlocking elements (12), wherein the interlocking elements (12) are at least sometimes covered by the covering film (40), which is connected in a detachable manner to components of the adhesive closure part (6), characterised in that the covering film (40) itself is formed by a ferrous non-woven material (40), which is furnished with an adhesive (42) on its end face facing the interlocking elements (12).
  2. System according to claim 1, characterised in that the covering film (40) comprises the adhesive, particularly in the form of a contact adhesive (42), on its side facing the interlocking elements (12), in that the covering film (40) can be connected, with its two longitudinal edges, to the two allocated longitudinal edges (22) of the second carrier strip (16) along a connecting zone (24) such that they can be detached again, in that, for this purpose, the second carrier strip (16) protrudes over the first carrier strip (10) at the edges, and in that the connecting zone (24) is arranged on the side of the second carrier strip (16) facing away from the connecting means (20).
  3. System according to claim 1 or 2, characterised in that the adhesive (42) of the covering film (40) is in contact with the end faces of the interlocking elements (12) or in that a protective layer (38) is placed between the end faces of the interlocking elements (12) and the covering film (40).
  4. System according to any one of the preceding claims, characterised in that the covering film itself is formed by a ferrous non-woven material (40), which is furnished with adhesive in the form of the contact adhesive (42) on its end face facing the interlocking elements (12).
  5. System according to claim 4, characterised in that the covering film (40) formed by ferrous non-woven material comprises a protective layer (38) between said film and the interlocking elements (12).
  6. System according to any one of the preceding claims, characterised in that the two carrier strips (10, 16) are connected to one another on their end faces facing one another by an adhesive (14), particularly in the form of an adhesive containing polyurethane.
  7. System according to claim 6, characterised in that an iron wire (18) is inserted in the adhesive (14) between the two carrier strips (10, 16).
  8. System according to any one of the preceding claims, characterised in that the connecting means on one side of the second carrier strip (16) is formed by a plurality of protruding small individual rods (20), which guarantee that the moulded foam adheres without any additional protrusions.
  9. Use of a system according to any one of claims 1 to 8 in a foam mould, particularly for manufacturing motor vehicle seat cushions, having a receiving pipe (2) in which the interlocking elements (12) covered with the covering film (40) can be inserted, wherein, after connecting the moulded foam to the connecting means (20) forming the seat cushion, and after extracting from the foam mould and after removing the covering film (40), the interlocking elements (12) are exposed.
EP18208101.8A 2017-12-06 2018-11-23 System comprising a cover film and an adhesive closing part Active EP3494827B1 (en)

Applications Claiming Priority (1)

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DE102017011245.2A DE102017011245A1 (en) 2017-12-06 2017-12-06 Fastener part

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EP3494827A1 EP3494827A1 (en) 2019-06-12
EP3494827B1 true EP3494827B1 (en) 2022-07-27

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KR102632738B1 (en) * 2019-08-30 2024-02-05 와이케이케이 가부시끼가이샤 Cotton fasteners and methods of manufacturing cotton fasteners
CN111436721B (en) * 2020-05-08 2023-08-01 东莞百宏实业有限公司 Snap-in type woven belt and preparation method thereof
DE102022127854A1 (en) 2022-10-24 2024-04-25 Gottlieb Binder Gmbh & Co. Kg Closure part

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US4710414A (en) * 1984-07-10 1987-12-01 Minnesota Mining And Manufacturing Company Fastener assembly with heat shrinkable film cover
NZ214244A (en) * 1984-11-20 1988-11-29 Velcro Usa Separable fastener and method of attachment thereof to a foam plastics article
CA1285122C (en) * 1985-07-17 1991-06-25 Richard N. Hatch Separable fasteners for attachment to other objects
US5180618A (en) * 1990-01-25 1993-01-19 Velcro Industries B.V. Separable fasteners for attachment to other objects
US5422156A (en) * 1993-04-23 1995-06-06 Aplix, Inc. Fastening member with ferromagnetic attachment strip
US5766385A (en) * 1995-12-06 1998-06-16 Velcro Industries B.V. Separable fastener having die-cut protective cover with pull tab and method of making same
DE19752763A1 (en) * 1997-11-28 1999-07-01 Binder Gottlieb Gmbh & Co Adhesive body
US7425360B2 (en) * 2004-03-02 2008-09-16 Velcro Industries B.V. Touch fastener products
DE102004015321A1 (en) 2004-03-30 2005-10-20 Binder Gottlieb Gmbh & Co Kg Fastener part
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KR101255623B1 (en) * 2012-09-10 2013-04-16 도종석 Fastening tape for seat pad and seat pad having the same

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