EP0967155B1 - Conical bag, especially for plants, made of thermoplastic film and method and apparatus for its manufacture - Google Patents

Conical bag, especially for plants, made of thermoplastic film and method and apparatus for its manufacture Download PDF

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Publication number
EP0967155B1
EP0967155B1 EP99111852A EP99111852A EP0967155B1 EP 0967155 B1 EP0967155 B1 EP 0967155B1 EP 99111852 A EP99111852 A EP 99111852A EP 99111852 A EP99111852 A EP 99111852A EP 0967155 B1 EP0967155 B1 EP 0967155B1
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EP
European Patent Office
Prior art keywords
webs
conical
adhesive strip
bags
funnel
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Expired - Lifetime
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EP99111852A
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German (de)
French (fr)
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EP0967155A1 (en
Inventor
Armin Meyer
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Lemo Maschinenbau GmbH
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Lemo Maschinenbau GmbH
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Publication of EP0967155A1 publication Critical patent/EP0967155A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/16Bags or like containers made of paper and having structural provision for thickness of contents of special shape
    • B65D31/18Triangular or conical bags
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00Flexible containers made from webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00Flexible containers made from webs
    • B31B2155/002Flexible containers made from webs by joining superimposed webs, e.g. with separate bottom webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00Shape of flexible containers
    • B31B2160/30Shape of flexible containers pointed or tapered
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2170/00Construction of flexible containers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/50Containers, packaging elements or packages, specially adapted for particular articles or materials for living organisms, articles or materials sensitive to changes of environment or atmospheric conditions, e.g. land animals, birds, fish, water plants, non-aquatic plants, flower bulbs, cut flowers or foliage
    • B65D85/52Containers, packaging elements or packages, specially adapted for particular articles or materials for living organisms, articles or materials sensitive to changes of environment or atmospheric conditions, e.g. land animals, birds, fish, water plants, non-aquatic plants, flower bulbs, cut flowers or foliage for living plants; for growing bulbs

Definitions

  • the invention initially relates to a funnel bag, in particular a pot plant funnel Made of thermoplastic film, with two side welds and one bottom seam extending between the side welds, that of a Adhesive tape is formed.
  • Hopper bags of the type in question are often used for the transportation of plants and flowers used.
  • Bottom open funnel bags in the form of envelopes are for the Transport of cut flowers used. It is not essential that the Funnel bags taper to a point, including trapezoidal funnel bags to understand.
  • funnel-shaped bags used for the transport of plants and flowers can be used are known from French patent FR 1 579 677.
  • the described funnel bags have a square filling opening and are folded by means of folds from two opposite sides.
  • the essentially trapezoidal funnel bag has a bottom seam, which is used as an adhesive seam is trained.
  • the invention has for its object a funnel bag, especially one To create pot plant funnels of the type mentioned and a method for continuous manufacture of such a funnel bag or a pot plant funnel to propose that by a special trained bottom seam allows significant quality improvement, especially if this funnel bag can be used to transport watered potted plants.
  • a funnel bag especially one To create pot plant funnels of the type mentioned and a method for continuous manufacture of such a funnel bag or a pot plant funnel to propose that by a special trained bottom seam allows significant quality improvement, especially if this funnel bag can be used to transport watered potted plants.
  • one Device are created by a structurally simple means to a safe handling funnel bag, especially a pot plant funnel, is achieved.
  • a hot-melt adhesive which preferably differs from one at least between the Side weld seams of the funnel bag continuously extending, preferably transparent adhesive strip is formed.
  • This tape can be essentially extend parallel to the bottom edge of the funnel bag or one freely have a selectable course between the side welds, for example in be substantially V-shaped. In addition to absolute liquid tightness any shrinkage in the cross seam area is largely prevented. Finally the optics are better if a transparent hot-melt adhesive is used.
  • Such a funnel bag or a pot plant funnel of the aforementioned type can be procedurally according to the proposal according to the invention of two flat superimposed sheets of thermoplastic plastic then particularly easy produce if the two webs in the area of a processing station one Bottom seam formation device are supplied, the two webs at least on their marginal sides are spaced apart, on the inside at least one of the two tracks near the bottom edge of the Funnel bag at least the distance between the two in a cross welding station formed side seams each bridging a funnel bag Glue is applied a little bit over the two that are still to be applied Side seams are arranged 180 ° apart in the area adjacent Funnel bag is enough and then brought the two lanes back together become.
  • funnel bag or pot plant funnel of the type of interest here as a rule be produced by alternately offset by 180 ° in the plastic film strip Funnel bags are made, it is very easy to apply the glue by a small piece beyond the side seams of a funnel bag to be formed into the in each case adjacent funnel bags, that is to say arranged 180 ° apart, in the web applied.
  • This has the immense advantage that in the same operation both a tight bottom seam in the lower area of the funnel bag and a Tear protection in the upper area of the funnel bag can be achieved.
  • the bottom seam is not parallel to the distance to arrange the bottom edge of the funnel bag. Rather, it can do all sorts Take contours, for example in the form of a V, etc. Such is optimal Manufacture especially when the shape of the adhesive tape in Dependency of a presettable control program can be generated.
  • This is preferably equipped with an outlet nozzle, that after erecting the outer areas of the two tracks in the thereby retracts formed opening area and to a fixed time and / or location or according to a program adjustable sequence within this area Adhesive seam on the inside of a web.
  • supply rolls 1, 2 are shown, each of which a web 3, 4 made of thermoplastic, such as polypropylene or polyethylene can be deducted.
  • the upper track 3 and the lower track 4 can be with the help a pair of feed rollers 5 in the direction of arrow 6.
  • Behind the The pair of preferred rollers 5 are processing stations in the form of a corner punching device 7 and a punching device 8 arranged.
  • Using the corner punching device 7 can be punched into the lower web 4 in an edge region V-shaped punchings 9th make, while using the punching device 8 suspension openings 10 in Edge area of the lower web 4 can be introduced.
  • a bottom seam connection device 11 which in detail consists of a Adhesive (hot melt) dispenser 12 and an outlet nozzle 13, the Function and meaning is explained in more detail below.
  • Cross-cut welding station 14 it is possible to alternate around funnel bags 15 To produce 180 ° offset from the two tracks 3 and 4.
  • the cross cut welding station 14 has corresponding welding tools 16, 17, which are used, for example, as welding bars or can also be designed as sweatbands. As from Figure 2 it can be seen that these welding tools are at a certain angle to each other arranged.
  • funnel bag 15 by actuating the welding cutting tools 16, 17 from the Separate the two strips of funnel bags. In this process, the lanes are through held a guide device indicated by the arrow 18. After detaching the funnel bags, as is also known, arrive individually at a needle station 19, which have needle stack belts 21 on both sides.
  • this device can be designed as a tear-off station, so that the lower web 4 projecting over the upper web 3 has one in FIG. 3 allowed to tear strips explained in more detail.
  • FIG. 3 Details of the special design of the funnel bags designed according to the invention 15 can be determined using FIG. 3.
  • the upper web 3 and the lower web 4 with the help of the welding tools 16, 17th welded together so that there are side welds 25, 26 on the funnel bag result.
  • a bottom edge 27 is in length much smaller than an edge 28 of the funnel bag located on the filling side.
  • Something with An adhesive strip 29 is arranged at a distance parallel to the bottom edge 27, which not only extends between the side welds 25 and 26, but also extends a little bit further into the funnel bag, which is offset by 180 ° 15 extends.
  • These end regions 31 of the adhesive seam strip 29 serve as Tearing protection.
  • FIG. 4 shows a modified embodiment of a pot plant funnel 15 shown.
  • a contour course 35 is shown substantially V-shaped. This course corresponds approximately to that of a flower pot. In this way, this is from the Surround the film web in the best possible way and this also has the advantage that no extreme stress tensions can occur.

Description

Die Erfindung bezieht sich zunächst auf einen Trichterbeutel, insbesondere Topfpflanzentrichter aus thermoplastischer Kunststoffolie, mit zwei Seitenschweißnähten und einer sich zwischen den Seitenschweißnähten erstreckenden Bodennaht, die von einem Klebestreifen gebildet wird.The invention initially relates to a funnel bag, in particular a pot plant funnel Made of thermoplastic film, with two side welds and one bottom seam extending between the side welds, that of a Adhesive tape is formed.

Trichterbeutel der in Rede stehenden Art werden häufig für den Transport von Pflanzen und Blumen verwendet. Unten offene Trichterbeutel in Form von Hüllen werden für den Transport von Schnittblumen benutzt. Dabei kommt es nicht unbedingt darauf an, daß die Trichterbeutel spitz zulaufen, auch trapezförmig ausgebildete Trichterbeutel sind hierunter zu verstehen.Hopper bags of the type in question are often used for the transportation of plants and flowers used. Bottom open funnel bags in the form of envelopes are for the Transport of cut flowers used. It is not essential that the Funnel bags taper to a point, including trapezoidal funnel bags to understand.

Derartige trichterförmige Beutel, die für den Transport von Pflanzen und Blumen verwendet werden können, sind aus dem französischen Patent FR 1 579 677 bekannt. Die beschriebenen Trichterbeutel weisen eine quadratische Einfüllöffnung auf und sind mittels Faltungen von zwei einander gegenüberliegenden Seiten zusammengelegt. Der im wesentlichen trapezförmige Trichterbeutel weist eine Bodennaht auf, die als Klebenaht ausgebildet ist.Such funnel-shaped bags used for the transport of plants and flowers can be used are known from French patent FR 1 579 677. The described funnel bags have a square filling opening and are folded by means of folds from two opposite sides. The essentially trapezoidal funnel bag has a bottom seam, which is used as an adhesive seam is trained.

Aus der DE 25 01 691 A1 ist ein Verfahren zum fortlaufenden Herstellen von Beuteln bekannt, die aus einem thermoplastischen Kunststoff bestehen, oben und unten offen sind und die Gestalt eines in flachem Zustand gleichschenkligen Trapezes aufweisen, wobei sie aus zwei an den Rändern miteinander verschweißten Bahnen unterschiedlicher Breite gebildet sind.DE 25 01 691 A1 describes a process for the continuous production of bags known, which consist of a thermoplastic, open at the top and bottom and have the shape of an isosceles trapezoid in the flat state, whereby they consist of two webs welded together at the edges of different Width are formed.

Trichterbeutel in Form von Spitztüten und Verfahren zu deren Herstellung gehen beispielsweise aus DE 35 43 725 C1 und DE 39 22 236 C2 hervor. Während - wie oben gesagt - die Schnittblumenhüllen an der Bodenseite offen sind, sind dagegen Topfpflanzentrichter an der Bodenseite geschlossen. Aus der Praxis ist es bekanntgeworden, zum Verschließen des Trichterbodens eine Querschweißnaht vorzusehen. Das quer verlaufende Abschweißen der flach aufeinanderliegenden Folienbahnen hat erhebliche Nachteile. So ist die Folie an der Querschweißnaht erheblich kerbempfindlich, mit der Folge, daß beim Einfüllen, d. h. Einwerfen eines schwereren Gegenstandes, beispielsweise eines gefüllten Blumentopfes, der Trichter im Bereich der Bodennaht aufreißt. Abgesehen davon, daß der Blumentopf nach unten durchstürzt, kann es auch vorkommen, daß die Bodennaht zwar noch so weit hält, daß der Blumentopf nicht durchfallen kann, jedoch die Naht eine Undichtigkeit aufweist. Dies hat zur Folge, daß beispielsweise gewässerte Blumentöpfe oder mit Schwämmen besetzte Töpfe nicht in dem gewünschten sicheren Zustand transportiert werden können. Darüber hinaus ist die Herstellung solcher geschweißter Bodennähte mit erheblichem Aufwand verbunden, insbesondere dann, wenn sogenannte Konturschweißungen vorgenommen werden sollen, d. h. eine Schweißkontur, die in etwa der Kontur des zu transportierenden Gegenstandes, wie z. B. eines Blumentopfes, entspricht. Schließlich hat sich herausgestellt, daß Topfplanzentrichter bei starker Belastung nicht nur an der Bodenseite aufreißen, sondern auch im oberen, d. h. im Einfüllbereich, vor allen Dingen dann, wenn der Topfpflanzentrichter zum Befüllen rasch und unkontrolliert geöffnet wird.Funnel bags in the form of lace bags and processes for their manufacture for example from DE 35 43 725 C1 and DE 39 22 236 C2. While - as above said - the cut flower casings are open on the bottom side, however, are potted plant funnels closed on the bottom. From practice it has become known to: Close the hopper bottom to provide a cross weld. That across continuous welding of the flat foil sheets lying on top of one another has considerable Disadvantage. The film on the cross weld seam is considerably sensitive to notches with which Consequence that when filling, d. H. Throwing in a heavier object, for example of a filled flower pot that tears open funnels in the area of the bottom seam. Apart from the fact that the flower pot falls down, it can also happen that the bottom seam still holds so far that the flowerpot does not fall through can, but the seam has a leak. As a result, for example watered flower pots or sponged pots not in the desired one safe condition can be transported. In addition, the manufacture of such welded bottom seams connected with considerable effort, especially when if so-called contour welding is to be carried out, d. H. a Welding contour, which is roughly the contour of the object to be transported, such as. B. of a flowerpot. Finally, it was found that potted plant hoppers not only rip open on the floor under heavy loads, but also in the upper, d. H. in the filling area, especially when the pot plant funnel is used for Filling is opened quickly and uncontrollably.

Der Erfindung liegt die Aufgabe zugrunde, einen Trichterbeutel, insbesondere einen Topfpflanzentrichter der eingangs genannten Art zu schaffen sowie ein Verfahren zum fortlaufenden Herstellen eines solchen Trichterbeutels bzw. eines Topfpflanzentrichters vorzuschlagen, das durch eine spezielle ausgebildete bodenseitige Quernaht eine wesentliche Qualitätsverbesserung ermöglicht, insbesondere wenn diese Trichterbeutel zum Transport von gewässerten Topfpflanzen verwendet werden. Zugleich soll eine Vorrichtung geschaffen werden, durch die mit baulich einfachen Mitteln ein sicher zu handhabender Trichterbeutel, speziell ein Topfpflanzentrichter, erzielt wird.The invention has for its object a funnel bag, especially one To create pot plant funnels of the type mentioned and a method for continuous manufacture of such a funnel bag or a pot plant funnel to propose that by a special trained bottom seam allows significant quality improvement, especially if this funnel bag can be used to transport watered potted plants. At the same time one Device are created by a structurally simple means to a safe handling funnel bag, especially a pot plant funnel, is achieved.

Um den Anforderungen an einen derart beschaffenen Trichterbeutel bzw. einen Topfpflanzentrichter Rechnung zu tragen, wird erfindungsgemäß vorgeschlagen, daß an der Einfüllseite des Trichterbeutels jeweils im Bereich der Seitenschweißnähte weitere, als Einreißschutz dienende Klebestreifen vorhanden sind, die während der Herstellung des Trichterbeutels jeweils als Endbereiche der die Bodennaht bildenden Klebestreifen zweier benachbart liegender Trichterbeutel entstehen. Hier bietet sich vor allen Dingen eine Hot-Melt-Klebung an, die vorzugsweise von einem sich zumindest zwischen den Seitenschweißnähten der Trichterbeutel durchgehend erstreckenden, vorzugsweise transparenten Klebestreifen gebildet ist. Dieser Klebestreifen kann sich im wesentlichen parallel zum bodenseitigen Rand der Trichterbeutel erstrecken oder aber einen frei wählbaren Verlauf zwischen den Seitenschweißnähten aufweisen, beispielsweise im wesentlichen V-förmig ausgebildet sein. Neben einer absoluten Flüssigkeitsdichtigkeit wird auch weitgehend jegliche Schrumpfung im Quernahtbereich verhindert. Schließlich ergibt sich eine bessere Optik, wenn ein transparenter Hot-Melt-Kleber verwendet wird.In order to meet the requirements for a funnel bag or a Taking potted plant funnels into account, it is proposed according to the invention that the filling side of the funnel bag in the area of the side weld seams, adhesive strips that serve as tearing protection are present during manufacture of the funnel bag as the end regions of the adhesive strips forming the bottom seam two adjacent funnel bags are created. Above all, this is a good option a hot-melt adhesive, which preferably differs from one at least between the Side weld seams of the funnel bag continuously extending, preferably transparent adhesive strip is formed. This tape can be essentially extend parallel to the bottom edge of the funnel bag or one freely have a selectable course between the side welds, for example in be substantially V-shaped. In addition to absolute liquid tightness any shrinkage in the cross seam area is largely prevented. Finally the optics are better if a transparent hot-melt adhesive is used.

Von besonderer Bedeutung für die vorliegende Erfindung ist der Umstand, daß Endbereiche des Klebestreifens an der Einfüllseite der Trichterbeutel im Bereich deren Seitenschweißnähte als Einreißschutz dienen. Wenn der Abstand des Klebestreifens zum bodenseitigen Rand der Trichterbeutel und der Abstand der Klebestreifen-Endbereiche zum einfüllseitigen Rand der Trichterbeutel gleich ausgebildet ist, hat man den Vorteil, daß man bei um 180° versetzter Lage der Topfpflanzentrichter bildenden Bahnabschnitte mit einem Arbeitsvorgang sowohl einen weitgehend dichten Verschluß am Boden der Trichterbeutel und einen relativ einfach herzustellenden Einreißschutz im Bereich der Einfüllseite der Trichterbeutel erreicht.Of particular importance for the present invention is the fact that End areas of the adhesive strip on the filling side of the funnel bags in the area of the Side weld seams serve as tearing protection. If the distance of the adhesive strip to the bottom edge of the funnel bag and the distance between the adhesive strip end areas has the same design as the filling-side edge of the funnel bag, one has the advantage that one with the 180 ° offset position of the pot plant funnel forming web sections with one operation both a largely tight closure at the bottom of the Funnel bag and a relatively easy to manufacture tear protection in the area of Filling side of the funnel bag reached.

Ein derartiger Trichterbeutel bzw. ein Topfpflanzentrichter der vorgenannten Art läßt sich verfahrensmäßig entsprechend dem Vorschlag nach der Erfindung aus zwei flach aufeinanderliegenden Bahnen aus thermoplastischem Kunststoff dann besonders einfach herstellen, wenn die beiden Bahnen im Bereich einer Bearbeitungsstation einer Bodennahtbildungseinrichtung zugeführt werden, wobei die beiden Bahnen zumindest an ihren Randseiten auf gegenseitigen Abstand gebracht werden, auf die Innenseite wenigstens einer der beiden Bahnen in der Nähe des bodenseitigen Randes der Trichterbeutel ein zumindest den Abstand zwischen den beiden in einer Quertrennschweißstation gebildeten Seitennähte jeweils eines Trichterbeutels überbrückender Kleber aufgebracht wird der ein geringes Stück über die beiden noch einzubringenden Seitennähte hinaus bis in den Bereich benachbart liegender um 180° versetzt angeordneter Trichterbeutel reicht und danach die beiden Bahnen wieder zusammengebracht werden.Such a funnel bag or a pot plant funnel of the aforementioned type can be procedurally according to the proposal according to the invention of two flat superimposed sheets of thermoplastic plastic then particularly easy produce if the two webs in the area of a processing station one Bottom seam formation device are supplied, the two webs at least on their marginal sides are spaced apart, on the inside at least one of the two tracks near the bottom edge of the Funnel bag at least the distance between the two in a cross welding station formed side seams each bridging a funnel bag Glue is applied a little bit over the two that are still to be applied Side seams are arranged 180 ° apart in the area adjacent Funnel bag is enough and then brought the two lanes back together become.

Da Trichterbeutel bzw. Topfpflanzentrichter der hier interessierenden Art in der Regel dadurch hergestellt werden, daß im Kunststoffolienband wechselweise um 180° versetzt Trichterbeutel hergestellt werden, ist es sehr leicht, den Kleber um ein geringes Stück über die einzubringenden Seitennähte eines zu bildenden Trichterbeutels hinaus bis in die jeweils in der Bahn benachbarte, also um 180° versetzt angeordnete Trichterbeutel aufzubringen. Dies bringt den immensen Vorteil mit sich, daß im gleichen Arbeitsgang sowohl eine dichte Bodennaht im unteren Bereich der Trichterbeutel als auch ein Einreißschutz im oberen Bereich der Trichterbeutel erzielt werden kann.As a funnel bag or pot plant funnel of the type of interest here, as a rule be produced by alternately offset by 180 ° in the plastic film strip Funnel bags are made, it is very easy to apply the glue by a small piece beyond the side seams of a funnel bag to be formed into the in each case adjacent funnel bags, that is to say arranged 180 ° apart, in the web applied. This has the immense advantage that in the same operation both a tight bottom seam in the lower area of the funnel bag and a Tear protection in the upper area of the funnel bag can be achieved.

Selbstverständlich ist es auch möglich, die Bodennaht nicht parallel im Abstand zum bodenseitigen Rand der Trichterbeutel anzuordnen. Vielmehr kann diese alle möglichen Konturen, beispielsweise in Form eines V usw. annehmen. Optimal ist eine solche Herstellung vor allen Dingen dann, wenn die Formkonturen des Klebestreifens in Abhängigkeit eines voreinstellbaren Steuerprogramms erzeugt werden. Eine Vorrichtung zum fortlaufenden Herstellen von Trichterbeuteln, insbesondere Topfpflanzentrichtem aus zwei flach aufeinanderliegenden Bahnen aus thermoplastischem Kunststoff mit Bearbeitungsstationen in Form von Stanzeinrichtungen und einer Bodennahtbildungseinrichtung sowie mit einer Quertrennschweißstation und einer Aufnadelstation zeichnet sich dadurch aus, daß die Bodennahtbildungseinrichtung einen Klebemittel abgebenden, steuerbaren Geber aufweist. Dieser ist vorzugsweise mit einer Austrittsdüse ausgerüstet, die nach Aufrichten der außenliegenden Bereiche der beiden Bahnen in den dadurch gebildeten Öffnungsbereich einfährt und auf einen zeitlich und/oder örtlich fest einstellbaren oder nach einem Programm einstellbaren Ablauf innerhalb dieses Bereiches die Klebenaht auf die Innenseite der einen Bahn aufbringt.Of course, it is also possible that the bottom seam is not parallel to the distance to arrange the bottom edge of the funnel bag. Rather, it can do all sorts Take contours, for example in the form of a V, etc. Such is optimal Manufacture especially when the shape of the adhesive tape in Dependency of a presettable control program can be generated. A device for the continuous production of funnel bags, especially pot plant funnels with two sheets of thermoplastic plastic lying flat on top of each other Processing stations in the form of punching devices and a bottom seam formation device as well as with a cross-cut welding station and a pin-on station characterized in that the bottom seam formation device emits an adhesive, controllable encoder. This is preferably equipped with an outlet nozzle, that after erecting the outer areas of the two tracks in the thereby retracts formed opening area and to a fixed time and / or location or according to a program adjustable sequence within this area Adhesive seam on the inside of a web.

Bevorzugte Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher erläutert. Es zeigen in jeweils schematischer Darstellung:

Figur 1
eine Vorrichtung zum Herstellen von Trichterbeuteln bzw. Topfpflanzentrichtern in der Ansicht,
Figur 2
die zugehörige Aufsicht,
Figur 3
einen Ausschnitt aus der Kunststoffolienbahn während der Herstellung der Trichterbeutel in vergrößertem Maßstab und
Figur 4
ein einzelner Trichterbeutel mit einer abgewandelten Bodennaht.
Preferred embodiments of the invention are shown in the drawing and are explained in more detail below. Each shows in a schematic representation:
Figure 1
a device for producing funnel bags or pot plant funnels in the view,
Figure 2
the associated supervision,
Figure 3
a section of the plastic sheet during the manufacture of the funnel bags on an enlarged scale and
Figure 4
a single funnel bag with a modified bottom seam.

In den Figuren 1 und 2 sind Vorratsrollen 1, 2 dargestellt, von denen jeweils eine Bahn 3, 4 aus thermoplastischem Kunststoff, wie beispielsweise Polypropylen oder Polyethylen abgezogen werden kann. Die obere Bahn 3 und die untere Bahn 4 lassen sich mit Hilfe eines Vorziehwalzenpaars 5 in Richtung des Pfeils 6 transportieren. Hinter dem Vorzugswalzenpaar 5 sind Bearbeitungsstationen in Form einer Eckenstanzeinrichtung 7 sowie einer Lochstanzeinrichtung 8 angeordnet. Mittels der Eckenstanzeinrichtung 7 lassen sich in die untere Bahn 4 in einem Randbereich V-förmige Ausstanzungen 9 vornehmen, während mit Hilfe der Lochstanzeinrichtung 8 Aufhängeöffnungen 10 im Randbereich der unteren Bahn 4 eingebracht werden können. Als nächste Bearbeitungsstation folgt eine Bodennahtverbindungseinrichtung 11, die im einzelnen aus einem Klebemittel (Hot-Melt) abgebenden Geber 12 sowie einer Austrittsdüse 13 besteht, deren Funktion und Bedeutung weiter unten näher erläutert wird.In the figures 1 and 2, supply rolls 1, 2 are shown, each of which a web 3, 4 made of thermoplastic, such as polypropylene or polyethylene can be deducted. The upper track 3 and the lower track 4 can be with the help a pair of feed rollers 5 in the direction of arrow 6. Behind the The pair of preferred rollers 5 are processing stations in the form of a corner punching device 7 and a punching device 8 arranged. Using the corner punching device 7 can be punched into the lower web 4 in an edge region V-shaped punchings 9th make, while using the punching device 8 suspension openings 10 in Edge area of the lower web 4 can be introduced. As the next processing station follows a bottom seam connection device 11, which in detail consists of a Adhesive (hot melt) dispenser 12 and an outlet nozzle 13, the Function and meaning is explained in more detail below.

Mit Hilfe der vorbeschriebenen Einrichtungen und einer nachfolgend erläuterten Quertrennschweißstation 14 ist es möglich, Trichterbeutel 15 jeweils wechselweise um 180° versetzt aus den beiden Bahnen 3 und 4 herzustellen. Die Quertrennschweißstation 14 weist entsprechende Schweißwerkzeuge 16,17 auf, die beispielsweise als Schweißbalken oder aber auch als Schweißbänder ausgebildet sein können. Wie aus Figur 2 ersichtlich, sind diese Schweißwerkzeuge unter einem bestimmten Winkel zueinander angeordnet. Ohne hier im einzelnen darauf einzugehen, weil seit langem bekannt, lassen sich Trichterbeutel 15 durch Betätigen der Schweißtrennwerkzeuge 16, 17 aus den beiden Bahnen Trichterbeutel abtrennen. Bei diesem Vorgang sind die Bahnen durch eine mit dem Pfeil 18 angedeutete Führungsvorrichtung gehalten. Nach dem Abtrennen gelangen die Trichterbeutel, wie gleichfalls bekannt, einzeln zu einer Aufnadelstation 19, die beidseitig Nadelstapelbänder 21 aufweisen. Letztere sind um Umlenkwalzen 22, 23 in nicht näher dargestellter Weise umlaufend im Takt der Beutel bzw. Trichterbeutelherstellmaschine angetrieben. Auf diese Weise lassen sich wechselweise auf den beiden Seiten Trichterbeutelpakete bilden, die beispielsweise durch eine Verblockstation 24 erzeugt werden. Gleichzeitig kann diese Einrichtung als Abreißstation ausgebildet sein, so daß die über die obere Bahn 3 vorstehende untere Bahn 4 jeweils einen in Fig. 3 näher erläuterten Streifen abzureißen erlaubt.With the help of the facilities described above and one explained below Cross-cut welding station 14, it is possible to alternate around funnel bags 15 To produce 180 ° offset from the two tracks 3 and 4. The cross cut welding station 14 has corresponding welding tools 16, 17, which are used, for example, as welding bars or can also be designed as sweatbands. As from Figure 2 it can be seen that these welding tools are at a certain angle to each other arranged. Without going into detail here, because it has been known for a long time funnel bag 15 by actuating the welding cutting tools 16, 17 from the Separate the two strips of funnel bags. In this process, the lanes are through held a guide device indicated by the arrow 18. After detaching the funnel bags, as is also known, arrive individually at a needle station 19, which have needle stack belts 21 on both sides. The latter are around guide rollers 22, 23 in not shown in detail in the cycle of the bag or funnel bag manufacturing machine driven. This way you can take turns on the two Form sides of funnel bag packages, for example by a blocking station 24 be generated. At the same time, this device can be designed as a tear-off station, so that the lower web 4 projecting over the upper web 3 has one in FIG. 3 allowed to tear strips explained in more detail.

Einzelheiten der speziellen Ausgestaltung der erfindungsgemäß ausgebildeten Trichterbeutel 15 lassen sich anhand der Figur 3 feststellen. In oben beschriebener Weise werden die obere Bahn 3 und die untere Bahn 4 mit Hilfe der Schweißwerkzeuge 16, 17 miteinander verschweißt, so daß sich Seitenschweißnähte 25, 26 am Trichterbeutel ergeben. Wie aus Figur 3 ersichtlich, ist ein bodenseitiger Rand 27 in seiner Länge wesentlich kleiner als ein einfüllseitig gelegener Rand 28 der Trichterbeutel. Etwas mit Abstand parallel zur bodenseitigen Randkante 27 ist ein Klebestreifen 29 angeordnet, der sich nicht nur zwischen den Seitenschweißnähten 25 und 26 erstreckt, sondern sich auch ein geringes Stück darüber hinaus bis in die um 180° versetzt dazu liegenden Trichterbeutel 15 erstreckt. Diese Endbereiche 31 des Klebenahtstreifens 29 dienen als Einreißschutz. Das bedeutet, daß in dem Fall, wenn beim Befüllen des Topfpflanzentrichters dieser an der Einfüllseite an den Seitenschweißnähten 25, 26 reißen sollte, kann dieser Riß sich nur bis zu den Endbereichen 31 des Klebestreifens 29 fortsetzen. Im übrigen sind in Figur 3 in einem Abreißstreifen 32 die Aufhängeöffnungen 10 sowie Verblockungspunkte 33 ersichtlich. Das gilt auch für die oben angesprochene Perforationslinie 34, die den Abreißstreifen 32 begrenzt.Details of the special design of the funnel bags designed according to the invention 15 can be determined using FIG. 3. In the manner described above the upper web 3 and the lower web 4 with the help of the welding tools 16, 17th welded together so that there are side welds 25, 26 on the funnel bag result. As can be seen from Figure 3, a bottom edge 27 is in length much smaller than an edge 28 of the funnel bag located on the filling side. Something with An adhesive strip 29 is arranged at a distance parallel to the bottom edge 27, which not only extends between the side welds 25 and 26, but also extends a little bit further into the funnel bag, which is offset by 180 ° 15 extends. These end regions 31 of the adhesive seam strip 29 serve as Tearing protection. This means that in the case when filling the pot plant funnel this should tear on the filler side at the side welds 25, 26, this tear can only continue up to the end regions 31 of the adhesive strip 29. in the the other are in Figure 3 in a tear strip 32, the suspension openings 10 and Blocking points 33 can be seen. This also applies to the perforation line mentioned above 34, which bounds the tear strip 32.

In Figur 4 ist eine abgewandelte Ausführungsform eines Topfpflanzentrichters 15 dargestellt. Anstatt eines im wesentlichen parallel zur Randkante 27 des Trichters verlaufenden Klebestreifens 29, der im übrigen aus transparentem Hot-Melt besteht, ist dort ein Konturenverlauf 35 im wesentlichen V-förmig dargestellt. Dieser Verlauf entspricht in etwa dem eines Blumentopfes. Auf diese Weise wird dieser von der Folienbahn in bestmöglicher Weise umgeben und dies hat auch noch den Vorteil, daß keine extremen Belastungsspannungen auftreten können.FIG. 4 shows a modified embodiment of a pot plant funnel 15 shown. Instead of one essentially parallel to the edge 27 of the funnel extending adhesive strip 29, which is otherwise made of transparent hot melt there a contour course 35 is shown substantially V-shaped. This course corresponds approximately to that of a flower pot. In this way, this is from the Surround the film web in the best possible way and this also has the advantage that no extreme stress tensions can occur.

Die Herstellung solcher Formenkonturen für den Klebestreifen 29 läßt sich am besten und am einfachsten durch eine Programmsteuerung vornehmen, wie sie in Figur 2 mit 36 bezeichnet ist. Diese Programmsteuerung 36 steht mit den Austrittsdüsen 13 der Geber 12 in Verbindung, so daß diese in der ausgewählten Form den Klebestreifen 29 auf die Innenseite der Bahnen 3 bzw. 4 aufbringen können.The production of such shape contours for the adhesive strip 29 is best and easiest to carry out by a program control, as shown in FIG. 2 with 36 is designated. This program control 36 stands with the outlet nozzles 13 of the sensors 12 in connection so that the adhesive tape 29 in the selected form on the Can apply the inside of the tracks 3 and 4.

Claims (10)

  1. Conical bag, especially a pot-plant sheath, made of thermoplastic film, having two side welded seams (25, 26) and a bottom seam which extends between the side welded seams (25, 26) and which is formed by an adhesive strip (29), characterized in that, on the filling side of the conical bag (15), in each case in the region of the side welded seams (25, 26), there are further adhesive strips serving as an anti-tear safeguard which, during the production of the conical bag (15), are in each case produced as end regions (31) of the adhesive strips (29), forming the bottom seam, of two conical bags (15) located adjacently.
  2. Conical bag according to Claim 1, characterized in that the bottom seam is formed by a hot-melt adhesive strip (29).
  3. Conical bag according to Claim 1 or 2, characterized in that the adhesive strip (29) is transparent.
  4. Conical bag according to one of Claims 1 to 3, characterized in that the adhesive strip (29) extends substantially parallel to and at a distance from the bottom edge (28) of the conical bag (15).
  5. Conical bag according to one of Claims 1 to 3, characterized in that the adhesive strip (29) runs substantially in a V shape.
  6. Method for the continuous production of conical bags (15), especially of pot-plant sheaths, from two webs (3, 4) of thermoplastic lying flat on each other, the webs (3, 4) in each case being pulled off from a supply roll (1,2) and fed step-by-step to a processing station and to a transverse separating and welding station (14) in order to form two side welded seams (25, 26) and then being supplied to a pinning station (19), characterized in that, in the region of the processing station, the two webs (3, 4) are supplied to a bottom seam forming device (11), the two webs (3, 4) being brought to a distance from each other, at least at their sides, an adhesive strip (29) being applied to the inner side of at least one of the two webs (3, 4), at a distance from its longitudinal edges, reaching a little beyond the two side seams (25, 26) yet to be introduced and into the region of conical bags (15) arranged adjacently and lying offset through 180°, and then the two webs (3, 4) being brought together again.
  7. Method according to Claim 6 or 7, characterized in that a hot-melt adhesive strip (29) is applied substantially parallel to the longitudinal edges of the webs (3, 4).
  8. Method according to Claim 7, characterized in that a hot-melt adhesive strip (29) of a freely selectable contour is then applied.
  9. Method according to Claim 8, characterized in that the shape contours of the adhesive strip (29) are produced as a function of a presettable control program.
  10. Apparatus for the continuous production of conical bags (15), especially of pot-plant sheaths, from two webs (3, 4) of thermoplastic lying flat on each other, comprising processing stations in the form of punching devices (7, 8) and a bottom seam forming device (11), and comprising a transverse separating and welding station (14) for forming two side welded seams (25, 26) and a pinning station (19), characterized in that the bottom seam forming device (11) has dispensers (12) which dispense adhesive, are connected to a program control system (36) and which can be controlled in such a way that an adhesive strip can be applied to the inner side of at least one of the two webs in a selected shape, reaching a little beyond the two side seams yet to be introduced and into the region of conical bags arranged adjacently and lying offset through 180°.
EP99111852A 1998-06-24 1999-06-19 Conical bag, especially for plants, made of thermoplastic film and method and apparatus for its manufacture Expired - Lifetime EP0967155B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19827987 1998-06-24
DE19827987A DE19827987B4 (en) 1998-06-24 1998-06-24 Funnel bags, in particular potted plant funnels made of thermoplastic plastic film, and method and device for producing such a funnel bag

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EP0967155A1 EP0967155A1 (en) 1999-12-29
EP0967155B1 true EP0967155B1 (en) 2003-11-12

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US6685614B1 (en) * 2000-05-03 2004-02-03 Patrick D Arnell Method of manufacturing trapezoid-shaped plastic zipper bags
US6793613B2 (en) 2001-02-16 2004-09-21 Hudson-Sharp Machine Co. Bag blocks
NL1028246C2 (en) * 2005-02-10 2006-08-11 Zwapak B V Packing block, packaging sleeve and method.
EP2399845B1 (en) * 2010-06-24 2016-04-20 Norio Goto A method for forming a tetrahedral shape packaging container
NO2729134T3 (en) 2015-05-29 2018-01-20
JP7113615B2 (en) * 2017-12-27 2022-08-05 朋和産業株式会社 Packaging bag, manufacturing method of packaging bag
CN113460478A (en) * 2020-03-31 2021-10-01 比亚迪半导体股份有限公司 Vehicle, food bag for vehicle and manufacturing method thereof

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DE2501691A1 (en) * 1975-01-17 1976-07-22 Hans Lehmacher Wrapping for cut flowers - two trapeze shaped sides of different width welded together along side edges are open top and bottom
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DE19827987A1 (en) 1999-12-30
DE19827987B4 (en) 2004-12-23
DE59907689D1 (en) 2003-12-18

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