DE102019220018A1 - Glued connection with hot melt adhesive and method for joining and separating such an adhesive connection - Google Patents

Glued connection with hot melt adhesive and method for joining and separating such an adhesive connection Download PDF

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Publication number
DE102019220018A1
DE102019220018A1 DE102019220018.4A DE102019220018A DE102019220018A1 DE 102019220018 A1 DE102019220018 A1 DE 102019220018A1 DE 102019220018 A DE102019220018 A DE 102019220018A DE 102019220018 A1 DE102019220018 A1 DE 102019220018A1
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Prior art keywords
components
hot
adhesive
connection
melt adhesive
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DE102019220018.4A
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German (de)
Inventor
Jörg Thomas
Michael Roos
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Continental Automotive GmbH
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Continental Automotive GmbH
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Priority to DE102019220018.4A priority Critical patent/DE102019220018A1/en
Publication of DE102019220018A1 publication Critical patent/DE102019220018A1/en
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C09J5/06—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving heating of the applied adhesive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
    • F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B29C65/348—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic with a polymer coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/362—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B29C65/368—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic with a polymer coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/76—Making non-permanent or releasable joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3475—Displays, monitors, TV-sets, computer screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3481—Housings or casings incorporating or embedding electric or electronic elements
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/304—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being heat-activatable, i.e. not tacky at temperatures inferior to 30°C
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/50—Additional features of adhesives in the form of films or foils characterized by process specific features
    • C09J2301/502—Additional features of adhesives in the form of films or foils characterized by process specific features process for debonding adherents

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

Die Erfindung betrifft eine Klebeverbindung mit einem Heißkleber (200), wobei zwei zu verbindende Bauteile (100, 300) mittels des Heißklebers (200) derart verbunden sind, dass innerhalb des Heißklebers (200) eine Heizvorrichtung (201) angeordnet ist.The invention relates to an adhesive connection with a hot glue (200), two components (100, 300) to be connected being connected by means of the hot glue (200) in such a way that a heating device (201) is arranged inside the hot glue (200).

Description

Die Erfindung betrifft eine Klebeverbindung mit einem Heißkleber und ein Verfahren zum Fügen und Trennen einer derartigen Klebeverbindung, wobei zwei zu verbindende Bauteile mittels des Heißklebers verbunden sind. Aus dem Stand der Technik sind derartige Klebeverbindungen für eine Vielzahl von zu verbindenden Bauteilen für verschiedenste Anwendungen bekannt. Bei Klebeverbindungen für Bauteile, die empfindlich auf Druck reagieren, wie beispielsweise elektrooptische Displays ist ein Lösen solcher Verbindungen schwierig bis unmöglich, wenn die verbundenen Bauteile nicht beschädigt werden sollen. Beispielsweise kann es bei dem Zusammenbau von elektrooptischen Anzeigen mit Gehäusen und/oder Deckgläsern vorkommen, dass eine zerstörungsfreie Demontage der Bauteile schwierig bis unmöglich ist, wenn beispielsweise aufgetretene Defekte behoben werden sollen.The invention relates to an adhesive connection with a hot-melt adhesive and a method for joining and separating such an adhesive connection, two components to be connected being connected by means of the hot-melt adhesive. From the prior art, such adhesive connections for a large number of components to be connected for a wide variety of applications are known. In the case of adhesive connections for components that are sensitive to pressure, such as electro-optical displays, loosening such connections is difficult or even impossible if the connected components are not to be damaged. For example, when assembling electro-optical displays with housings and / or cover glasses, it can happen that a non-destructive dismantling of the components is difficult or even impossible if, for example, defects that have occurred are to be repaired.

Aufgabe der Erfindung ist es daher, eine Klebeverbindung mit Heißkleber und ein Verfahren zum Fügen und Trennen einer derartigen Klebeverbindung anzugeben, bei denen die mittels Heißkleber verbundenen Bauteile zerstörungsfrei getrennt werden können. Diese Aufgabe wird dadurch erreicht, dass bei einer erfindungsgemäßen Klebeverbindung innerhalb des Heißklebers oder eine Heizvorrichtung angeordnet ist und bei einem erfindungsgemäßen Verfahren zum Fügen zweier zu verbindender Bauteile die zu fügenden Bauteile der Heißkleber mit der Heizvorrichtung angebracht wird, der Heißkleber zumindest teilweise aufgeschmolzen wird und die zu fügenden Bauteile miteinander gefügt werden, wobei der Heißkleber so zwischen den beiden zu fügenden Bauteilen angeordnet wird, dass er beide zu fügenden Bauteile berührt. Bei einem erfindungsgemäßen Verfahren zum Trennen zweier mit Heißkleber verbundenen Bauteile werden zunächst eine Spannung an die Heizvorrichtung angelegt bis der Heißkleber aufgeschmolzen ist und dann die beiden Bauteile getrennt.The object of the invention is therefore to provide an adhesive connection with hot-melt adhesive and a method for joining and separating such an adhesive connection, in which the components connected by means of hot-melt adhesive can be separated non-destructively. This object is achieved in that in an adhesive connection according to the invention within the hot glue or a heating device is arranged and in a method according to the invention for joining two components to be connected, the components to be joined, the hot glue is attached with the heating device, the hot glue is at least partially melted and the Components to be joined are joined together, the hot melt adhesive being arranged between the two components to be joined in such a way that it touches both components to be joined. In a method according to the invention for separating two components connected with hot-melt adhesive, a voltage is first applied to the heating device until the hot-melt adhesive has melted and then the two components are separated.

Wenn die Heizvorrichtung als Heizdraht ausgestaltet ist ein einfacher Aufbau der Klebeverbindung. Besonders effektiv ist die Heizvorrichtung, wenn der Heizdraht aus Kupfer besteht.If the heating device is designed as a heating wire, the adhesive connection is simple. The heating device is particularly effective when the heating wire is made of copper.

Weiterhin kann die Heizvorrichtung als Bedruckung oder sonstige Beschichtung innerhalb des Heißklebers mit einem stromleitenden Material ausgestaltet sein. So kann beispielsweise der Heißkleber zweilagig ausgestaltet sein und die Beschichtung mit dem strom leitenden Material zwischen den beiden Lagen des Heißklebers angeordnet sein.Furthermore, the heating device can be designed as a printing or other coating within the hot melt adhesive with an electrically conductive material. For example, the hot-melt adhesive can be designed in two layers and the coating with the electrically conductive material can be arranged between the two layers of the hot-melt adhesive.

Wenn die zu fügenden Bauteile ein Deckglas und ein Gehäuse eines Displays sind, wird ein Display realisiert, welches zerstörungsfrei geöffnet und wieder verschlossen werden kann. Das Deckglas kann hierbei aus Glas oder einem transparenten Kunststoff bestehen. Statt mit einem Gehäuse kann das Deckglas auch als Halter oder als Teil eines Gehäuses ausgestaltet sein.If the components to be joined are a cover glass and a housing of a display, a display is realized which can be opened and closed again without being destroyed. The cover glass can consist of glass or a transparent plastic. Instead of a housing, the cover glass can also be designed as a holder or as part of a housing.

Ein erfindungsgemäßes Verfahren ist dadurch gekennzeichnet, dass zwischen die zu fügenden Bauteile der Heißkleber mit der Heizvorrichtung angebracht wird und der Heißkleber zumindest teilweise aufgeschmolzen wird, die zu fügenden Bauteile miteinander gefügt werden, wobei der Heißkleber so zwischen den beiden zu fügenden Bauteilen angeordnet wird, dass er beide zu fügenden Bauteile berührt. Hierbei kann der Heißkleber von außerhalb nur an den Rändern erhitzt werden, die im zusammengefügten Zustand an den zu fügenden Bauteilen anliegen. Es ist aber auch möglich, auf eine zusätzliche Heizvorrichtung zu verzichten und die innerhalb des Heißklebers vorhandene Heizvorrichtung durch Anlegen einer elektrischen Spannung an die Heizvorrichtung zu benutzen und so den Heißkleber auf zu schmelzen. So ist bei einer Montagelinie keine Heizstation mehr erforderlich.A method according to the invention is characterized in that the hot glue is applied with the heating device between the components to be joined and the hot glue is at least partially melted, the components to be joined are joined together, the hot glue being arranged between the two components to be joined in such a way that it touches both components to be joined. In this case, the hot melt adhesive can only be heated from outside at the edges which, in the assembled state, lie against the components to be joined. However, it is also possible to dispense with an additional heating device and to use the heating device present within the hot melt adhesive by applying an electrical voltage to the heating device and thus to melt the hot melt adhesive. A heating station is no longer required on an assembly line.

Bei einem erfindungsgemäßen Verfahren zum Trennen zweier mit Heißkleber verbundenen Bauteile, wobei die Klebeverbindung wie zuvor beschrieben ausgestaltet ist, wird eine elektrische Spannung an die Heizvorrichtung angelegt bis der Heißkleber aufgeschmolzen ist. Dann werden die beiden Bauteile getrennt.In a method according to the invention for separating two components connected with hot-melt adhesive, the adhesive connection being configured as described above, an electrical voltage is applied to the heating device until the hot-melt adhesive has melted. Then the two components are separated.

Die Erfindung wird nachfolgend anhand der Figuren näher erläutert.The invention is explained in more detail below with reference to the figures.

Es zeigen:

  • 1 einen Teilschnitt durch ein Ausführungsbeispiel der Erfindung in gefügtem Zustand
  • 2 einen Teilschnitt durch das Ausführungsbeispiel aus 1 in getrenntem Zustand
Show it:
  • 1 a partial section through an embodiment of the invention in the joined state
  • 2 a partial section through the embodiment 1 in separated state

In 1 kennt man ein Deckglas 100, ein elektrooptisches Display 101 und Bondingmaterial 102, einen Heißkleber 200 mit Heizdraht 201 und weiterhin ein Gehäuse 300. Das elektrooptische Display 101 ist mittels des Bondingmaterials 102 mit dem Deckglas 100 verbunden. Der Heißkleber 200 verbindet das Gehäuse 300 mit dem Deckglas 100.In 1 you know a cover slip 100 , an electro-optical display 101 and bonding material 102 , a hot glue 200 with heating wire 201 and still a case 300 . The electro-optical display 101 is by means of the bonding material 102 with the cover slip 100 connected. The hot glue 200 connects the housing 300 with the cover slip 100 .

Wenn das Deckglas 100 mit dem elektrooptischen Display 101 von dem Gehäuse 300 derart getrennt werden soll, dass das Deckglas 100 so wenig beansprucht wird, dass das elektrooptische Display 101 diese Trennung ohne Schaden übersteht, wird an den Heizdraht eine elektrische Spannung angelegt, so dass ein Strom durch den Heizdraht 201 fließt und den Heizdraht erwärmt und so der Heißkleber soweit aufschmilzt, dass das Deckglas 100 von dem Gehäuse 300 entfernt werden kann und der in 2 dargestellte Zustand eintritt.When the cover slip 100 with the electro-optical display 101 from the housing 300 should be separated such that the cover slip 100 so little is used that the electro-optical display 101 If this separation survives without damage, an electrical voltage is applied to the heating wire, so that a current through the heating wire 201 flows and heats the heating wire and so the hot glue melts so far that the cover glass 100 from the housing 300 can be removed and the in 2 condition shown occurs.

Claims (10)

Klebeverbindung mit einem Heißkleber (200), wobei zwei zu verbindende Bauteile (100, 300) mittels des Heißklebers (200) verbunden sind, dadurch gekennzeichnet, dass innerhalb des Heißklebers (200) eine Heizvorrichtung (201) angeordnet ist.Glued connection with a hot glue (200), two components (100, 300) to be connected being connected by means of the hot glue (200), characterized in that a heating device (201) is arranged inside the hot glue (200). Klebeverbindung nach Patentanspruch 1, dadurch gekennzeichnet, dass die Heizvorrichtung (201) als Heizdraht (201) ausgestaltet ist.Glued connection after Claim 1 , characterized in that the heating device (201) is designed as a heating wire (201). Klebeverbindung nach Patentanspruch 2, dadurch gekennzeichnet, dass der Heizdraht (200) aus Kupfer besteht.Glued connection after Claim 2 , characterized in that the heating wire (200) consists of copper. Klebeverbindung nach Patentanspruch 1, dadurch gekennzeichnet, dass die Heizvorrichtung als Bedruckung oder sonstige Beschichtung mit einem strom leitenden Material ausgestaltet ist.Glued connection after Claim 1 , characterized in that the heating device is designed as a printing or other coating with a current-conducting material. Klebeverbindung nach einem der vorstehenden Patentansprüche, dadurch gekennzeichnet, dass der Heißkleber (200) zumindest auch zwischen den zu verbindenden Bauteilen angeordnet ist.Adhesive connection according to one of the preceding claims, characterized in that the hot-melt adhesive (200) is also arranged at least between the components to be connected. Klebeverbindung nach einem der vorstehenden Patentansprüche, dadurch gekennzeichnet, dass die zu fügenden Bauteile (100, 300) ein Deckglas (100) und ein Gehäuse (300) eines Displays sind.Adhesive connection according to one of the preceding claims, characterized in that the components (100, 300) to be joined are a cover glass (100) and a housing (300) of a display. Klebeverbindung nach Patentanspruch 6, dadurch gekennzeichnet, dass das Display als elektrooptisches Display (101) ausgestaltet ist.Glued connection after Claim 6 , characterized in that the display is designed as an electro-optical display (101). Verfahren zum Fügen zweier zu verbindender Bauteile (100, 300) mit einer Klebeverbindung, wobei die Klebeverbindung nach einem der Patentansprüche 1-7 ausgestaltet ist, dadurch gekennzeichnet, dass zwischen die zu fügenden Bauteile (100, 300) der Heißkleber (200) mit der Heizvorrichtung (201) angebracht wird und der Heißkleber (200) zumindest teilweise aufgeschmolzen wird, die zu fügenden Bauteile (100, 300) miteinander gefügt werden, wobei der Heißkleber (200) so zwischen den beiden zu fügenden Bauteilen (100, 300) angeordnet wird, dass er beide zu fügenden Bauteile (100, 300) berührt.Method for joining two components (100, 300) to be connected with an adhesive connection, the adhesive connection according to one of the Claims 1 - 7th is designed, characterized in that between the components to be joined (100, 300) the hot glue (200) is applied with the heating device (201) and the hot glue (200) is at least partially melted, the components to be joined (100, 300) are joined to one another, the hot-melt adhesive (200) being arranged between the two components (100, 300) to be joined in such a way that it touches both components (100, 300) to be joined. Verfahren zum Fügen zweier zu verbindender Bauteile (100, 300) mit einer Klebeverbindung nach Patentanspruch 8, dadurch gekennzeichnet, dass der Heißkleber (200) mittels Anlegen einer elektrischen Spannung an die Heizvorrichtung (200) zumindest teilweise aufgeschmolzen wird.Method for joining two components (100, 300) to be connected with an adhesive connection Claim 8 , characterized in that the hot melt adhesive (200) is at least partially melted by applying an electrical voltage to the heating device (200). Verfahren zum Trennen zweier mit Heißkleber (200) verbundenen Bauteile, wobei die Klebeverbindung nach einem der Patentansprüche 1-7 ausgestaltet ist, dadurch gekennzeichnet, dass eine elektrische Spannung an die Heizvorrichtung (201) angelegt wird bis der Heißkleber (200) aufgeschmolzen ist und dann die beiden Bauteile (100, 300) getrennt werden.Method for separating two components connected with hot-melt adhesive (200), the adhesive connection according to one of the Claims 1 - 7th is designed, characterized in that an electrical voltage is applied to the heating device (201) until the hot melt adhesive (200) has melted and then the two components (100, 300) are separated.
DE102019220018.4A 2019-12-18 2019-12-18 Glued connection with hot melt adhesive and method for joining and separating such an adhesive connection Withdrawn DE102019220018A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2154037A1 (en) * 1971-10-29 1973-05-10 Josef Fischer Kg Holzwerke Bonding building components - using melt adhesive component containing current conductor as heating element
WO2001019937A1 (en) * 1999-09-16 2001-03-22 Tubus Composite Panels Ag Hot-melt adhesive element for bonding components using an adhesive layer
DE102009055091A1 (en) * 2009-12-21 2011-06-22 tesa SE, 20253 Induction heatable adhesive tape with differential release behavior
DE202012011582U1 (en) * 2012-12-03 2013-12-05 Martin Mayer Hot melt surface - activated by electricity and heat

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2154037A1 (en) * 1971-10-29 1973-05-10 Josef Fischer Kg Holzwerke Bonding building components - using melt adhesive component containing current conductor as heating element
WO2001019937A1 (en) * 1999-09-16 2001-03-22 Tubus Composite Panels Ag Hot-melt adhesive element for bonding components using an adhesive layer
DE102009055091A1 (en) * 2009-12-21 2011-06-22 tesa SE, 20253 Induction heatable adhesive tape with differential release behavior
DE202012011582U1 (en) * 2012-12-03 2013-12-05 Martin Mayer Hot melt surface - activated by electricity and heat

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