CH439064A - Method for producing adhesive connections on closure parts of bag-like packaging containers and device for carrying out the method - Google Patents

Method for producing adhesive connections on closure parts of bag-like packaging containers and device for carrying out the method

Info

Publication number
CH439064A
CH439064A CH373566A CH373566A CH439064A CH 439064 A CH439064 A CH 439064A CH 373566 A CH373566 A CH 373566A CH 373566 A CH373566 A CH 373566A CH 439064 A CH439064 A CH 439064A
Authority
CH
Switzerland
Prior art keywords
adhesive
strip
bag
compressed gas
closure parts
Prior art date
Application number
CH373566A
Other languages
German (de)
Inventor
Kiefer Heinz
Original Assignee
Hesser Ag Maschf
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 Hesser Ag Maschf filed Critical Hesser Ag Maschf
Publication of CH439064A publication Critical patent/CH439064A/en

Links

Classifications

    • 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
    • B29C65/52—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 way of applying the adhesive
    • B29C65/526—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 way of applying the adhesive by printing or by transfer from the surfaces of elements carrying the adhesive, e.g. using brushes, pads, rollers, stencils or silk screens
    • 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
    • B29C66/01—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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • B29C66/1352—Single hem to hem 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
    • 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
    • B29C66/43122—Closing the top of gable top containers
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8226—Cam mechanisms; Wedges; Eccentric mechanisms
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8227—Transmission mechanisms using springs
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8324—Joining or pressing tools pivoting around one axis
    • 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
    • B65B51/02—Applying adhesives or sealing liquids
    • 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
    • B65B51/02—Applying adhesives or sealing liquids
    • B65B51/023—Applying adhesives or sealing liquids using applicator nozzles
    • 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
    • B65B51/02—Applying adhesives or sealing liquids
    • B65B51/026—Applying adhesives or sealing liquids using rotating applicators
    • 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
    • B65B51/20—Applying or generating heat or pressure or combinations thereof by fluid pressure acting directly on folds or on opposed surfaces, e.g. using hot-air jets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Package Closures (AREA)
  • Coating Apparatus (AREA)

Description

  

  
 



   Verfahren zum Herstellen von Klebeverbindungen an Verschlussteilen von beutelartigen Verpackungsbehältern und Vorrichtung zur Durchführung des Verfahrens
Die Erfindung betrifft ein Verfahren zum Herstellen von Klebeverbindungen an Verschlussteilen von beutelartigen Verpackungsbehältern durch Auftragen von Klebstoff mittels eines mechanischen, den Klebstoff durch Abwischen oder Abschmieren an die zu beleimenden Flächen übertragenden Klebstoffauftragsorgans, sowie auf eine Vorrichtung zum Durchführen dieses Verfahrens, wobei sich die Erfindung besonders für Beutelverschlüsse eignet, die durch Einrollfalten ausgebildet worden sind.



   Es ist für den vorliegenden Zweck bereits bekannt, den Klebstoff mit einer sogenannten Leimleiste aufzutragen, die zunächst mittels einer Walze mit einer Klebstoffschicht versehen wird und diese Schicht dann durch Abwischen oder Abschmieren auf die zu beleimende Fläche überträgt.



   Dieses an sich sehr einfache Verfahren hat in gewissen Fällen den Nachteil, dass der Klebstoff nicht sicher in ausreichender Menge an alle diejenigen Stellen gelangt, die für die Dichtheit der zu bildenden Klebe- oder Verschlussnaht wesentlich sind.



   So ist es beispielsweise bei Einrollfaltverschlüssen von Beuteln o. dgl. wichtig, dass beim Umlegen und Ankleben der ein- oder mehrmals umgefalteten Kopfverschlussleiste auf die Beuteloberseite genügend Klebstoff in die durch die Kopfleiste und die Beuteloberseite gebildete Ecke gelangt, so dass dort eine zusätzliche Abdichtung der flachgelegten Beutelmündung erzielt wird.



   Die Erfindung bezweckt, das vorgenannte Verfahren und eine Vorrichtung zum Durchführen desselben so zu verbessern, dass der von einer Leimleiste oder einem anderen Auftrags organ auf die Klebestelle übertragene Klebstoff in beliebig vorausbestimmbaren Mengen auch an schwierig erreichbare Teile und Ecken gelangt, um somit einwandfrei dichte Nähte zu erzielen.



   Zu diesem Zweck kennzeichnet sich das eingangs genannte Verfahren erfindungsgemäss dadurch, dass ein unter Druck stehendes Gas mittels dem Auftrags organ zugeordneter Blasdüsen derart gegen den durch das Auftragsorgan zugeführten Klebstoff gerichtet wird, dass Teile dieses Klebstoffes an vorbestimmte Stellen der Klebeverbindung gedrängt werden.



   Vorzugsweise kann dabei das Druckgas wahlweise entweder mit einem Aushärtebeschleuniger für den Klebstoff versetzt oder aber beheizt sein.



   Zur Durchführung dieses Verfahrens ist gemäss der Erfindung eine Vorrichtung vorgesehen, die sich dadurch kennzeichnet, dass das Auftragsorgan als   Leirnlei-    ste ausgebildet ist, die zur Leiste quer verlaufende, bei der Vorderkante ihrer den Klebstoff aufnehmenden Fläche ausmündene Blasdüsen aufweist, durch die hindurch das Druckgas gegen den auf die Verschlussteile mittels der Leiste aufgebrachten Klebstoff austritt. Eine derartige Leimleiste eignet sich besonders gut für das Beleimen von Einrollfaltverschlüssen, da hier der Klebstoff tief in die Faltecken gedrängt wird und dort die erwünschte sichere Abdichtung der Beutelöffnung bewirkt.



   Vorteilhaft wird Druckluft als Druckgas verwendet, deren Zustrom in üblicher Weise gesteuert wird, wobei die mit den Mündungen der Düsen versehene Klebstoffaufnahmefläche der Leiste konkav gewölbt ist.



   Die Erfindung wird nachstehend anhand von schematischen Zeichnungen für ein besonders vorteilhaftes Ausführungsbeispiel erläutert.



   In den Zeichnungen ist
Fig. 1 die Schnittdarstellung der wesentlichen Teile einer mit einer Klebstoffauftragsleiste ausgerüsteten erfindungsgemässen Beutelverschluss-Beleimvorrichtung und
Fig. 2 in vergrössertem Masstab die Klebstoffauftragsleiste und ein Beutelverschluss gemäss Fig. 1 für sich allein.



   Die dargestellte Vorrichtung enthält eine Klebstoff  auftragsleiste 1, einen Klebstoffvorratsbehälter 2, eine in den Vorratsbehälter 2 eintauchende Klebstoffentnahmewalze 3 und eine derselben zugeordnete Klebstoffsam  melwalze    4, Lenker 5 zum Führen und Antreiben der Klebstoffauftragsleiste 1, eine Kurvenschablone 6 zum Verschwenken der Klebstoffauftragsleiste 1 und einen an Lenkern 7, 8 geführten   Faltschieber    9.



   Die in Pfeilrichtung angetriebene Walze 3 entnimmt Klebstoff K aus dem Vorratsbehälter 2 und überträgt ihn auf die Sammelwalze 4.



   Die Klebstoffauftragsleiste 1 (im folgenden kurz Leiste genannt) ist an einem Hebel 10 befestigt und mittels eines Zapfens 11 verschwenkbar in dem einen Lenker 5 gelagert, der seinerseits auf einer Welle 12 befestigt und mittels dieser verschwenkbar gelagert ist. Auf der genannten Welle 12 befindet sich ein weiterer, nicht dargestellter Lenker zur Führung der Leiste 1 an ihrem anderen Ende. Der dargestellte Lenker 5 wird durch einen an ihm befindlichen Hebelarm 13 über ein Gestänge 14 von üblichen, nicht dargestellten Getriebeteilen im Takt einer zugehörigen Verpackungsmaschine verschwenkt. Die Leiste 1 steht über den Zapfen 11 drehfest mit einem Hebel 15 in Verbindung, an dessen Ende eine Kurvenrolle 16 drehbar gelagert ist.

   Beim Verschwenken des genannten Lenkers 5 rollt die Kurvenrolle 16 auf der Kurvenschablone 6 entlang und bewirkt entsprechend deren Kurvenverlauf über den Hebel 10 und eine an ihm angreifende Feder 17 ein Verschwenken der Leiste 1 in der Weise, dass diese mit der Vorderkante   lb    ihrer Klebstoffaufnahmefläche la, die vorzugsweise konkav gewölbt ist, an der   Sammelwalze    4 zur Anlage kommt, so dass sich Klebstoff K auf der Klebstoffaufnahmefläche la ablagern kann. Durch Verschwenken der Kurvenschablone 6 entgegen dem Uhrzeigersinn wird dann die Leiste 1 von der   Sammelwalze    4 abgehoben und durch Verschwenken des Hebels 13 zwischen die Oberseite B1 eines Beutels B und seinen in bekannter Weise vorgefalteten Einrollfaltverschluss E geführt.

   Durch Verschwenken des Lenkers 8 mittels eines Hebels 18 wird der durch den zweiten Lenker 7 geführte Faltschieber 9 gegen die dem Klebstoffauftrag gegenüberliegende Seite des Einrollfaltverschlusses E bewegt und bewirkt dort einen einstellbaren Gegendruck auf die Leiste 1.



   In die Klebstoffaufnahmefläche la der Leiste 1 münden eine Anzahl von Düsenbohrungen 19, die über eine gemeinsame Bohrung 20 und eine Schlauchleitung 21 an eine nicht dargestellte Druckluftquelle angeschlossen sind. Anstelle von Luft kann jedoch auch Kohlensäure, Stickstoff oder ein anderes vorbestimmte gewünschte Eigenschaften aufweisendes Gas, beispielsweise auch mit Aushärtebeschleunigern versetzte oder beheizte Luft zur Anwendung gelangen.

   Durch einen geeigneten, nicht dargestellten Steuerschieber o. dgl., der sich zwischen der Gasquelle und der Leiste 1 befindet, wird das jeweilige Gas freigegeben und strömt durch die Düsenbohrungen 19 gegen den zwischen Leiste 1 und Einrollfaltverschluss E befindlichen Klebstoff K, so dass ein Teil dieses Klebstoffes über den von der Leiste 1 erfassbaren Bereich hinaus zwischen an Beschnittkanten S des Einrollfaltverschlusses E angrenzende Packstoffwandungen hineinge drängt wird und für eine gute Abdichtung sorgt.



   Ergänzend sei noch darauf hingewiesen, dass auch abweichenden Arten von Auftrags organen, beispielsweise Leimsegmenten oder Leimwalzen in der erfindungsgemässen Weise zusätzliche Blasdüsen zugeordnet werden können, wenn der aufzutragende Klebstoff schwer zugängliche Stellen erreichen soll.   



  
 



   Method for producing adhesive connections on closure parts of bag-like packaging containers and device for carrying out the method
The invention relates to a method for producing adhesive connections on closure parts of bag-like packaging containers by applying adhesive by means of a mechanical adhesive applicator that transfers the adhesive to the surfaces to be glued by wiping or smearing, and to a device for carrying out this method, the invention being particularly useful suitable for bag closures that have been formed by roll-up folds.



   It is already known for the present purpose to apply the adhesive with a so-called glue bar, which is first provided with an adhesive layer by means of a roller and then transfers this layer to the surface to be glued by wiping or smearing.



   This method, which is very simple in itself, has the disadvantage in certain cases that the adhesive does not reliably reach all those points in sufficient quantity that are essential for the tightness of the adhesive or sealing seam to be formed.



   For example, with roll-up folding closures of bags or the like, it is important that when folding and gluing the head closure strip, which has been folded over one or more times on the top of the bag, enough adhesive gets into the corner formed by the head strip and the top of the bag, so that there is an additional seal Flat bag mouth is achieved.



   The aim of the invention is to improve the aforementioned method and a device for carrying out the same so that the adhesive transferred from a glue strip or other application organ to the glue point in any amount that can be determined in advance reaches parts and corners that are difficult to reach, thus ensuring perfectly tight seams to achieve.



   For this purpose, the method mentioned at the outset is characterized according to the invention in that a pressurized gas is directed against the adhesive supplied by the application element by means of blow nozzles assigned to the application element in such a way that parts of this adhesive are forced to predetermined points of the adhesive connection.



   Preferably, the compressed gas can either be mixed with a curing accelerator for the adhesive or it can be heated.



   To carry out this method, a device is provided according to the invention, which is characterized in that the application element is designed as a Leirnlei- ste, which has blow nozzles running transversely to the strip and opening out at the front edge of its adhesive-receiving surface through which the compressed gas against which the adhesive applied to the closure parts by means of the strip emerges. Such a glue strip is particularly well suited for gluing roll-in folding closures, since here the adhesive is pushed deep into the fold corners and there effects the desired secure sealing of the bag opening.



   Advantageously, compressed air is used as the compressed gas, the flow of which is controlled in the usual way, the adhesive receiving surface of the bar provided with the mouths of the nozzles being concave.



   The invention is explained below with reference to schematic drawings for a particularly advantageous embodiment.



   In the drawings is
1 shows the sectional illustration of the essential parts of a bag closure gluing device according to the invention equipped with an adhesive application strip and
FIG. 2 shows the adhesive application strip and a bag closure according to FIG. 1 on their own on an enlarged scale.



   The device shown contains an adhesive application bar 1, an adhesive storage container 2, an adhesive removal roller 3 immersed in the storage container 2 and an adhesive collecting roller 4 assigned to it, handlebars 5 for guiding and driving the adhesive application bar 1, a curve template 6 for pivoting the adhesive application bar 1 and one on Handlebars 7, 8 guided folding handle 9.



   The roller 3 driven in the direction of the arrow removes adhesive K from the storage container 2 and transfers it to the collecting roller 4.



   The adhesive application bar 1 (hereinafter referred to as bar) is attached to a lever 10 and pivotably mounted by means of a pin 11 in one link 5, which in turn is attached to a shaft 12 and pivotably mounted by means of this. On said shaft 12 there is a further link, not shown, for guiding the bar 1 at its other end. The illustrated link 5 is pivoted by a lever arm 13 located on it via a linkage 14 of conventional, not illustrated gear parts in the cycle of an associated packaging machine. The bar 1 is non-rotatably connected to a lever 15 via the pin 11, at the end of which a cam roller 16 is rotatably mounted.

   When the said link 5 is pivoted, the cam roller 16 rolls along the curve template 6 and, in accordance with its curve profile, causes the bar 1 to pivot via the lever 10 and a spring 17 acting on it in such a way that the front edge lb of its adhesive receiving surface la, which is preferably concave, comes to rest on the collecting roller 4, so that adhesive K can be deposited on the adhesive receiving surface la. By pivoting the curve template 6 counterclockwise, the bar 1 is then lifted off the collecting roller 4 and, by pivoting the lever 13, is guided between the top B1 of a bag B and its fold-in closure E, which is pre-folded in a known manner.

   By pivoting the handlebar 8 by means of a lever 18, the folding slide 9 guided by the second handlebar 7 is moved against the side of the roll-up closure E opposite the application of adhesive and there causes an adjustable counterpressure on the bar 1.



   A number of nozzle bores 19 which are connected via a common bore 20 and a hose line 21 to a compressed air source (not shown) open into the adhesive receiving surface la of the bar 1. Instead of air, however, it is also possible to use carbonic acid, nitrogen or some other gas having predetermined desired properties, for example air mixed with hardening accelerators or heated air.

   The respective gas is released by a suitable, not shown control slide or the like, which is located between the gas source and the strip 1 and flows through the nozzle bores 19 against the adhesive K located between the strip 1 and roll-in folding closure E, so that a part this adhesive is pushed in beyond the area that can be grasped by the strip 1 between the packaging material walls adjoining the trimmed edges S of the roll-up closure E and ensures a good seal.



   In addition, it should be pointed out that other types of application organs, for example glue segments or glue rollers, can be assigned additional blow nozzles in the manner according to the invention if the adhesive to be applied is to reach places that are difficult to access.

Claims (1)

PATENTANSPRUCH I Verfahren zum Herstellen von Klebeverbindungen an Verschlussteilen von beutelartigen Verpackungsbehältern durch Auftragen von Klebstoff mittels eines mechanischen, den Klebstoff durch Abwischen oder Abschmieren an die zu beleimenden Flächen übertragenden Klebstoffauftragsorgans, dadurch gekennzeichnet, dass ein unter Druck stehendes Gas mittels dem Auftragsorgan zugeordneter Blasdüsen derart gegen den durch das Auftragsorgan zugeführten Klebstoff gerichtet wird, dass Teile dieses Klebstoffs an vorbestimmte Stellen der Klebeverbindung gedrängt werden. PATENT CLAIM I A method for producing adhesive connections on closure parts of bag-like packaging containers by applying adhesive by means of a mechanical adhesive applicator which transfers the adhesive to the surfaces to be glued by wiping or smearing, characterized in that a pressurized gas by means of blow nozzles assigned to the applicator in such a way against the the application member supplied adhesive is directed that parts of this adhesive are forced to predetermined locations of the adhesive connection. UNTERANSPRÜCHE 1. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass das Druckgas mit einem Aushärtebeschleuniger für den Klebstoff versetzt ist. SUBCLAIMS 1. The method according to claim I, characterized in that the compressed gas is mixed with a curing accelerator for the adhesive. 2. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass das Druckgas beheizt ist. 2. The method according to claim I, characterized in that the compressed gas is heated. 3. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass als Druckgas Luft verwendet wird. 3. The method according to claim I, characterized in that air is used as the compressed gas. PATENTANSPRUCH II Vorrichtung zur Durchführung des Verfahrens nach Patentanspruch I, dadurch gekennzeichnet, dass das Auftragsorgan als Leimleiste (1) ausgebildet ist, die zur Leiste quer verlaufende, bei der Vorderkante (lb) ihrer den Klebstoff aufnehmenden Fläche (la) ausmündende Blasdüsen (19) aufweist, durch die hindurch das Druckgas gegen den auf die Verschlussteile mittels der Leiste (1) aufgebrachten Klebstoff (K) austritt. PATENT CLAIM II Device for carrying out the method according to claim 1, characterized in that the application element is designed as a glue strip (1) which has blow nozzles (19) running transversely to the strip and opening out at the front edge (lb) of its surface (la) receiving the adhesive, through which the compressed gas escapes against the adhesive (K) applied to the closure parts by means of the strip (1). UNTERANSPRUCH: 4. Vorrichtung nach Patentanspruch II, dadurch gekennzeichnet, dass die mit den Mündungen der Düsen (19) versehene Klebstoffaufnahmefläche (la) der Leiste (1) konkav gewölbt ist. SUBClaim: 4. Device according to claim II, characterized in that the adhesive receiving surface (la) of the strip (1) provided with the mouths of the nozzles (19) is concave.
CH373566A 1965-07-09 1966-03-15 Method for producing adhesive connections on closure parts of bag-like packaging containers and device for carrying out the method CH439064A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0056543 1965-07-09

Publications (1)

Publication Number Publication Date
CH439064A true CH439064A (en) 1967-06-30

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Application Number Title Priority Date Filing Date
CH373566A CH439064A (en) 1965-07-09 1966-03-15 Method for producing adhesive connections on closure parts of bag-like packaging containers and device for carrying out the method

Country Status (3)

Country Link
US (1) US3480470A (en)
CH (1) CH439064A (en)
GB (1) GB1084695A (en)

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US3480470A (en) 1969-11-25

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