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DE3834728A1 - Packages closed by adhesive strips and process for closing same ultrasonically - Google Patents

Packages closed by adhesive strips and process for closing same ultrasonically

Info

Publication number
DE3834728A1
DE3834728A1 DE3834728A DE3834728A DE3834728A1 DE 3834728 A1 DE3834728 A1 DE 3834728A1 DE 3834728 A DE3834728 A DE 3834728A DE 3834728 A DE3834728 A DE 3834728A DE 3834728 A1 DE3834728 A1 DE 3834728A1
Authority
DE
Germany
Prior art keywords
packages
adhesive strips
adhesive
sonotrodes
closed
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.)
Withdrawn
Application number
DE3834728A
Other languages
German (de)
Inventor
Herbert Ferklass
Peter Luedtke
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE3834728A priority Critical patent/DE3834728A1/en
Publication of DE3834728A1 publication Critical patent/DE3834728A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/22—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding
    • B65B51/225—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding by ultrasonic welding
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C66/1122—Single lap to lap joints, i.e. overlap 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/04—Applying separate sealing or securing members, e.g. clips
    • B65B51/06—Applying adhesive tape
    • B65B51/067—Applying adhesive tape to the closure flaps of boxes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)

Abstract

The present invention relates to packages closed by adhesive strips and to a process for closing same, in which closing takes place by ultrasonic vibrations by means of sonotrodes. Within the working sequence of packaging machines, the sonotrodes are guided over adhesive strips and package seams to be closed. If necessary, a sword-like metal piece is pushed as a so-called anvil under the seam, so that the reflection of the ultrasonic waves issuing from the sonotrodes is guaranteed, with the result that a perfect welding of the adhesive strip together with the package takes place.

Description

Die Erfindung betrifft Packstücke, welche durch Klebestreifen verschlossen werden, sowie Verfahren zum Verschließen dersel­ ben durch Ultraschall.The invention relates to packages which are made by adhesive strips to be locked, and methods for locking them ben by ultrasound.

In neuerer Zeit werden Packstücke, und zwar insbesondere Papp­ kartons, Faltschachteln und ähnliche Behälter, vielfach durch Klebestreifen verschlossen. Es werden dabei die zu verschließen­ den Fugen dazu vorwiegend mit Papierstreifen verklebt, die mit einem trocknenden Leim oder mit einem Dauerkleber versehen sind. Die Papierstreifen können dabei mit längsverlaufenden oder längs- und querverlaufenden Verstärkungen versehen sein, die vorteil­ haft in der Klebstoffschicht eingebettet sind. Die Klebestreifen können aber auch aus einem Kunststoffstreifen oder Kunststof­ folien bestehen. Das Aufbringen der Klebestreifen kann manuell, mit Hilfe eines Handgerätes oder auch maschinell erfolgen.More recently, packages have become, especially cardboard cartons, folding boxes and similar containers, often through Adhesive strips closed. It will close the the joints are mainly glued with paper strips, which with with a drying glue or with a permanent adhesive. The paper strips can have longitudinal or longitudinal and transverse reinforcements, which are advantageous are embedded in the adhesive layer. The adhesive strips can also be made of a plastic strip or plastic foils exist. The adhesive strips can be applied manually, with the aid of a hand-held device or by machine.

Bei den bisher aufgezeigten Verfahren hat sich herausgestellt, daß bei den erforderlichen Arbeitsgeräten der klebende Effekt der einzelnen Bänder störend wirkt. Der Klebeeffekt wird auch durch die wechselnden Umwelteinflüsse stark beeinflußt und be­ schränkt die maximale Haftfähigkeit auf ca. 6 Monate. Deshalb ist man dazu übergegangen, die Klebebänder mit einer trockenen Klebeschicht zu versehen, die während des Aufbringens des Klebe­ streifens auf das Packstück unter anderen mit einem Wärmekeil erhitzt werden. Durch die Erwärmung wird eine Verbindung zwischen dem Klebestreifen und dem Packstück, durch das Verschmelzen der trockenen Klebeschicht und deren Wiedererstarrung, erreicht. Da­ bei ist das Entstehen von giftigen Dämpfen nicht auszuschließen.In the methods shown so far, it has been found that that with the necessary tools the adhesive effect of the individual bands is disruptive. The sticky effect is too strongly influenced by the changing environmental influences and be limits the maximum adhesion to about 6 months. That's why one has gone over to the adhesive tapes with a dry one Adhesive layer to be provided during the application of the adhesive touch the package with a heat wedge be heated. The heating creates a connection between the adhesive strip and the package, by fusing the dry adhesive layer and its re-solidification. There The formation of toxic vapors cannot be ruled out.

Zur Darstellung nach dem Stand der Technik ist noch hinzuzufügen, daß auch das Aufbringen des dafür erhitzten Klebestoffes während des Arbeitsganges zwischen unbeschichteten Papierstreifen und dem Packstück erfolgen kann. Aber auch diese angeführten Verfahren erweisen sich als sehr störanfällig, zum Beispiel durch ungewoll­ tes Anhalten der Einrichtung, Kanalverstopfungen und Brandgefahr.For the representation according to the state of the art, it must also be added that also the application of the heated adhesive during of the operation between uncoated paper strips and the package can be done. But also these procedures turn out to be very susceptible to failure, for example due to unwanted Stop the facility, blockages and fire hazard.

Gegenstand der Erfindung ist es, die Vorteile von Klebestreifen, die mit festen und nicht klebenden Klebstoffen versehen sind, so zu verarbeiten, daß ihre Erhitzung ohne die oben angeführten Nach­ teile erfolgt. Gemäß der Erfindung geschieht dies mittels Ultra­ schallschwingungen und deren Übertragung auf eine sogenannte Sono­ trode, deren Schwingungsamplitude Reibung zwischen den einzelnen Medien entstehen läßt, die bei Bewegung der Sonotrode über Klebe­ band und Packstück hinweg zu kontinuierlichen, nahtähnlichen Ver­ schweißungen führt. Diese Nähte im Dauerstrich verbinden schnell, sauber, gefahrlos, zuverlässig und umweltfreundlich, da keine gif­ tigen Dämpfe entstehen, Klebeband und Verpackungsstück miteinander.The object of the invention is to take advantage of adhesive strips, which are provided with firm and non-adhesive adhesives, so to process their heating without the above parts done. According to the invention, this is done using Ultra sound vibrations and their transmission to a so-called Sono trode, whose vibration amplitude friction between each Lets media arise when the sonotrode moves over adhesive tape and package to continuous, seam-like Ver welds. These seams in the continuous line connect quickly, clean, safe, reliable and environmentally friendly because no gif vapors, adhesive tape and packaging piece together.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung darge­ stellt. Es zeigtIn the drawing, an embodiment of the invention is Darge poses. It shows

Fig. 1 das Verfahren zum Verschließen von Packstücken durch Klebestreifen mit fester Klebeschicht durch Ultraschall. Fig. 1 shows the method for closing packages by adhesive tape with a firm adhesive layer by ultrasound.

Das Packstück 1 bewegt sich in Pfeilrichtung in der Verpackungs­ maschine. Der Klebestreifen 2 wird gemäß der jeweiligen Maschinen­ konstruktion um das Packstück 1 herumgeführt. Der schwertförmige Amboß 3 fährt im Maschinentakt nach Bedarf so unter die mit Klebe­ band zu verschließende Fuge, daß die aus der Sonotrode 4 austreten­ den Ultraschallwellen reflektiert und als Reibungsamplitude wirk­ sam werden. Das Packstück 1, der Klebestreifen 2 und die Sonotro­ de 4 bewegen sich hierbei jeweils in Pfeilrichtung. Je nach Aus­ legung der Maschine mit einer oder mehreren Sonotroden ergeben sich durch die einzelnen Relativbewegungen nahtähnliche Verschweißungen beidseitig der Fuge. Nach Fertigstellung der Fugenverklebung und Herausbewegung des Ambosses 3 unterhalb der fertigverklebten Fuge, wird das Klebeband 2 und die Sonotrode 4 über die Kippkante 5 des Packstückes 1 in Pfeilrichtung 6 bewegt und damit die anschließen­ de Packstückfuge auf die beschriebene Weise vorgenommen. The package 1 moves in the direction of the arrow in the packaging machine. The adhesive strip 2 is guided around the package 1 according to the respective machine construction. The sword-shaped anvil 3 moves in the machine cycle as required under the joint to be sealed with adhesive tape, that the sonotrode 4 emerging from the ultrasonic waves are reflected and effective sam as a friction amplitude. The package 1 , the adhesive strip 2 and the Sonotro de 4 each move in the direction of the arrow. Depending on the design of the machine with one or more sonotrodes, the individual relative movements result in seam-like welds on both sides of the joint. After completion of the joint gluing and moving out of the anvil 3 below the glued joint, the adhesive tape 2 and the sonotrode 4 is moved over the tilting edge 5 of the package 1 in the direction of arrow 6 and thus the package joint is made in the manner described.

Diese Arbeitsabläufe vollziehen sich nun Zug um Zug, bis die gewünschte Verschließung der einzelnen Fugen der jeweili­ gen Packstücke erreicht ist. Da durch die Anwendung von Ultraschall keine Aufheizzeiten und damit Wartezeiten be­ nötigt werden, ist dieses dargestellte Verfahren zum Ver­ schließen von Packstücken, gemäß der Erfindung, immer so­ fort einsatzbereit.These workflows are now taking place step by step, until the desired closure of the individual joints of the respective gen packages has been reached. Because by using Ultrasound no heating up times and thus waiting times are necessary, this method is shown for Ver closing of packages, according to the invention, always so ready to use.

Für die Beurteilung der Patentfähigkeit in Betracht ge­ zogene Patentschriften:Considered for the assessment of patentability drawn patents:

DE-OS 19 35 585
DE-OS 19 44 447DE-OS 19 35 585
DE-OS 19 44 447

Claims (5)

1. Packstücke, welche durch Klebestreifen verschlossen werden, sowie Verfahren zum Verschließen derselben, dadurch gekennzeichnet, daß das Ver­ schließen durch Ultraschall erfolgt.1. packages which are closed by adhesive strips, and methods for closing the same, characterized in that the closure is carried out by ultrasound. 2. Packstücke nach Anspruch 1, dadurch gekenn­ zeichnet, daß das Verschließen durch eine Sonotrode erfolgt.2. Packages according to claim 1, characterized records that the closure by a Sonotrode takes place. 3. Packstücke nach Anspruch 1 und 2, dadurch ge­ kennzeichnet, daß nicht nur eine, sondern auch mehrere Sonotroden angeordnet werden können.3. packages according to claim 1 and 2, characterized ge indicates that not just one, but several sonotrodes can also be arranged. 4. Packstücke nach Ansprüchen 1, 2 und 3, dadurch gekennzeichnet, daß die Sonotrode oder die Sonotroden, über Klebebänder und Packstücke hin­ weg, bewegt werden.4. Packages according to claims 1, 2 and 3, characterized characterized in that the sonotrode or the sonotrodes, over adhesive tapes and packages away, be moved. 5. Packstücke nach Ansprüchen 1, 2, 3 und 4, dadurch gekennzeichnet, daß nach Bedarf Metall­ schwerter als Ambosse für die Reflexion der Ultraschall­ wellen benutzt werden.5. packages according to claims 1, 2, 3 and 4, characterized characterized that metal as needed heavier than anvils for the reflection of the ultrasound waves are used.
DE3834728A 1988-10-12 1988-10-12 Packages closed by adhesive strips and process for closing same ultrasonically Withdrawn DE3834728A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3834728A DE3834728A1 (en) 1988-10-12 1988-10-12 Packages closed by adhesive strips and process for closing same ultrasonically

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3834728A DE3834728A1 (en) 1988-10-12 1988-10-12 Packages closed by adhesive strips and process for closing same ultrasonically

Publications (1)

Publication Number Publication Date
DE3834728A1 true DE3834728A1 (en) 1990-04-19

Family

ID=6364943

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3834728A Withdrawn DE3834728A1 (en) 1988-10-12 1988-10-12 Packages closed by adhesive strips and process for closing same ultrasonically

Country Status (1)

Country Link
DE (1) DE3834728A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10009195A1 (en) * 2000-02-26 2001-08-30 Topack Verpacktech Gmbh Method and device for gluing packaging parts
WO2011107351A1 (en) * 2010-03-02 2011-09-09 Tesa Se Method for adhesively bonding substrates
DE102023201573A1 (en) * 2023-02-22 2024-08-22 Adolf Würth GmbH & Co. KG Process, handheld ultrasound device, film and thermally activated adhesive

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10009195A1 (en) * 2000-02-26 2001-08-30 Topack Verpacktech Gmbh Method and device for gluing packaging parts
US6740018B2 (en) 2000-02-26 2004-05-25 Topack Verpackungstechnik Gmbh Application of adhesive to and processing of adhesive on receptacles for smokers' products
WO2011107351A1 (en) * 2010-03-02 2011-09-09 Tesa Se Method for adhesively bonding substrates
DE102023201573A1 (en) * 2023-02-22 2024-08-22 Adolf Würth GmbH & Co. KG Process, handheld ultrasound device, film and thermally activated adhesive

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8141 Disposal/no request for examination