EP2295335B1 - Method for manufacturing a packaging bag from flexible film material and such a packaging bag - Google Patents

Method for manufacturing a packaging bag from flexible film material and such a packaging bag Download PDF

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Publication number
EP2295335B1
EP2295335B1 EP10171864A EP10171864A EP2295335B1 EP 2295335 B1 EP2295335 B1 EP 2295335B1 EP 10171864 A EP10171864 A EP 10171864A EP 10171864 A EP10171864 A EP 10171864A EP 2295335 B1 EP2295335 B1 EP 2295335B1
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EP
European Patent Office
Prior art keywords
flexible sheet
sheet material
packaging bag
stiffened
region
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10171864A
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German (de)
French (fr)
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EP2295335A1 (en
Inventor
Detlev D. Ansinn
Bernd Wilke
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.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP2295335A1 publication Critical patent/EP2295335A1/en
Application granted granted Critical
Publication of EP2295335B1 publication Critical patent/EP2295335B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/02—Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/28—Folding sheets, blanks or webs around mandrels
    • B31B70/30—Moving mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/001—Flexible containers made from webs by folding webs longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/001—Flexible containers made from webs by folding webs longitudinally
    • B31B2155/0014—Flexible containers made from webs by folding webs longitudinally having their openings facing transversally to the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/36—Folding sheets, blanks or webs by continuously feeding them to stationary members, e.g. plates, ploughs or cores

Definitions

  • Tubular packaging bags for receiving liquid or solid goods which are generally produced and filled by means of horizontal or vertical tubular bag machines, are known from the prior art in various configurations.
  • these packaging bags made of flexible film material have the disadvantage that they have no stiffness due to the material and therefore must be transported and stored to protect their contents in shockproof and crushproof outer packaging.
  • stiffened areas significantly increased stiffness of the packaging bag can be largely dispensed with the use of additionally required outer packaging for storage and transport, especially in packaging bags made of flexible film material with liquid or fragile content.
  • the formation of the at least one stiffened partial region can take place before, after or simultaneously with the production of a first transverse sealing seam at a free end of the film tube.
  • the method for producing such a stiffened packaging bag can be performed reliably and inexpensively.
  • the accumulation of flexible film material takes place by means of a cylindrical tool which is arranged on an outer circumference of the film tube.
  • a cylindrical tool which is arranged on an outer circumference of the film tube.
  • the stiffened portion is made by accumulating flexible sheet material at the stiffened portion position and then hardening the accumulation of sheet material, and / or the stiffened portion is made on a smooth portion of the flexible sheet material and the smooth portion is stiffened so that a stiffened portion wall-like stiffening arises.
  • the accumulation of the film material is preferably achieved by a single or multiple folding of the film material, wherein a kind of bellows is formed by gathering the film material in small defined or undefined folds.
  • This shirring of the film material is in this case carried out in a simple manner and essentially without a major, significant expenditure of time.
  • the stiffened portion is formed as one or a plurality of reinforcing ribs.
  • the reinforcing rib may be formed as inwardly or outwardly directed, circumferential rib.
  • the flexible sheet material is made of multiple layers comprising an outer layer, a curable layer, a barrier layer, and a sealing layer, wherein the curable layer is crosslinkable into a polymer.
  • a multi-layer film is required, whereby a simplified and more cost-effective handling over several individual films is achieved.
  • the reinforcing rib is formed in the circumferential direction of the packaging bag as a circumferential ring and / or the reinforcing rib in the longitudinal direction of the packaging bag.
  • the reinforcing rib of the packaging bag can be formed in a round, or oval or triangular or rectangular or polygonal peripheral shape, whereby possibly predetermined cross sections of the packaging bag can be produced with appropriate stiffness.
  • the stiffened portions may also provide a grid shape.
  • FIGS. 1 to 5 a method for producing a packaging bag of flexible sheet material and such a packaging bag described in detail.
  • FIG. 1 is a schematic side view of an embodiment of the packaging bag 1 according to the invention shown, which consists of a flexible sheet material 2 (see FIG. 5 ), which has been sealed by a longitudinal sealing seam 3 to a film tube 4.
  • the packaging bag 1 has at a lower end 5a a first transverse seam 5 (bottom seam) and at an upper end 7a a second transverse seam 7 (top seam) which closes the filled packaging bag 1.
  • the packaging bag 1 comprises flexible subregions 8, of which four flexible subregions 8 are shown by way of example in this illustration. Arranged between these flexible subareas 8 are subregions 6, 6 'which are perpendicular to the axial direction and are stiffened from gathered film material and which form annularly extending reinforcing ribs of the packaging bag 1.
  • the reinforcing ribs may have a round or oval or triangular or rectangular or polygonal peripheral shape.
  • the partial regions 6 stiffened by means of shirred foil material in this figure are in this case formed as outwardly projecting reinforcing ribs and the one illustrated by way of example, made of shirred foil material stiffened portion 6 'is formed as an inwardly projecting reinforcing rib.
  • shirred foil material stiffened portion 6 ' is formed as an inwardly projecting reinforcing rib.
  • Between two of these gathered from shirred sheet material portions 6 are also shown in the axial direction A of gathered film material extending stiffened portions 6 "shown, which serve as reinforcing ribs in the longitudinal direction of the packaging bag 1 and give this an additional dimensional stability.
  • FIG. 5 is a part of such a tubular bag machine shown. How out FIG. 5 As can be seen, the tubular bag machine is supplied with the flexible film material 2, which is tubular shaped via a forming shoulder 18, and in a first method step a longitudinal sealing seam 3 is produced in order to form an elongated closed film tube 4.
  • a first transverse seam 5 (bottom seam) is produced at a free end 5a of the film tube 4, and subsequently at least one annular peripheral region 6 made of gathered film material is produced on the flexible film tube 4.
  • This stiffened from gathered film material portion 6 is, as shown in the schematic sectional view of FIG. 2 can be seen, generated by a tool 11, which comprises a first half-shell 11a and a second half-shell 11b, briefly brought to the film tube 4, so that the supplied film material 4 accumulates on an end face 12 of the tool 11.
  • This accumulation of the film material 4 is preferably carried out by a simple or multiple folding or shirring of the film material 4 in small defined or undefined folds, which form a kind of bellows.
  • a wrinkling is illustrated with directed from the outside of the film tube 4 outward wrinkles. Wrinkling with inward wrinkles is also possible.
  • first the part region 6 stiffened from gathered film material and then the first transverse seam 5 can be produced or the part region 6 stiffened from gathered film material and the first transverse seam 5 can be produced simultaneously.
  • the second method step described above can be carried out repeatedly in order to produce a plurality of partial regions 6 and 6 'which are stiffened from gathered sheet material and which, as reinforcing ribs, bring about a significantly improved dimensional stability of the packaging bag 1 according to the invention.
  • the smooth, striped regions 19 are produced by irradiation of the smooth film material.
  • a second transverse seam 7 top seam
  • the first transverse seam 5 of a further, subsequently produced packaging bag can preferably also be produced.
  • the finished packaging bag is separated from the subsequent film tube 4.
  • the packaging bag according to the invention has the particular advantage that only one or more stiffened portions are formed solely from its flexible starting sheet material, which provide a significant stiffening or considerable increase in the shape stiffness of the packaging bag.
  • the packaging bag in particular for fracture-sensitive or liquid ingredients, be designed so that previously required shock and crush-proof outer packaging to protect the content can be omitted.
  • the packaging bag according to the invention due to the small required material thickness of the film material for producing the improved dimensional stability of the packaging bag, only a comparatively low use of material is required, which likewise contributes to the lower overall costs of the packaging.
  • the novel production method of stiffened packaging bags made of flexible film material is operationally reliable and can be integrated later even on existing tubular bag machines.

Abstract

The method involves producing a longitudinal sealing seam (3) at a tubular formed foil material for producing a longitudinal closed tubular sheeting (4) made from flexible foil material. The transversal seam (5) is produced at a free end (5a) of the tubular sheeting. The reinforced subarea (6) is produced at the flexible tubular sheeting. An independent claim is also included for a packing bag is made of a flexible foil material.

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines schlauchartigen Verpackungsbeutels aus einem flexiblen Folienmaterial, sowie einen derartigen Verpackungsbeutel.The present invention relates to a method for producing a tubular packaging bag from a flexible sheet material, as well as such a packaging bag.

Schlauchartige Verpackungsbeutel zur Aufnahme von flüssigen oder festen Gütern, die im Allgemeinen mittels horizontalen oder vertikalen Schlauchbeutelmaschinen hergestellt und befüllt werden, sind aus dem Stand der Technik in unterschiedlichen Ausgestaltungen bekannt. Diese aus flexiblem Folienmaterial hergestellten Verpackungsbeutel haben jedoch den Nachteil, dass sie materialbedingt keine Formsteifigkeit aufweisen und demzufolge zum Schutz ihres Inhalts in stoß- und quetschsicheren Umverpackungen transportiert und gelagert werden müssen.Tubular packaging bags for receiving liquid or solid goods, which are generally produced and filled by means of horizontal or vertical tubular bag machines, are known from the prior art in various configurations. However, these packaging bags made of flexible film material have the disadvantage that they have no stiffness due to the material and therefore must be transported and stored to protect their contents in shockproof and crushproof outer packaging.

Aus der US 3,684,642 A ist eine geriffelte Verpackungsfolie und deren Herstellung bekannt. Nach einer Vorerhitzung wird die Folie ebenfalls erhitzten Rollen oder Trommeln zugeführt, um die die Folie geführt wird. Die Räder drücken die Folie in längsförmige Spalten, um die gewünschte geriffelte Form zu erhalten. Diese Folie eignet sich insbesondere zur Verpackung von Snacks in beutelförmigen Verpackungen.From the US 3,684,642 A is a corrugated packaging film and its production known. After preheating, the film is also fed to heated rollers or drums, around which the film is guided. The wheels push the film into longitudinal gaps to obtain the desired corrugated shape. This film is particularly suitable for packaging snacks in bag-shaped packaging.

Offenbarung der ErfindungDisclosure of the invention

Das erfindungsgemäße Verfahren zur Herstellung eines Verpackungsbeutels mit den Merkmalen des Anspruchs 1 weist demgegenüber den Vorteil auf, dass aus einem flexiblen Folienmaterial ein Verpackungsbeutel hergestellt wird, der zumindest einen flexiblen und einen versteiften Teilbereich aufweist. Hierbei wird eine Versteifung des Verpackungsbeutels dadurch erreicht, dass in einem ersten Verfahrensschritt aus einem schlauchförmig geformten Folienmaterial ein länglich geschlossener Folienschlauch hergestellt wird. Danach wird in einem weiteren Verfahrensschritt vor oder nach oder gleichzeitig mit der Herstellung einer ersten Quersiegelnaht am freien Ende (Fußende) des Folienschlauchs wenigstens ein versteifter Teilbereich hergestellt. Anschließend kann eine Befüllung des halbfertigen Verpackungsbeutels erfolgen und abschließend eine zweite Quersiegelnaht (am Kopfende) des Folienschlauchs hergestellt werden. Infolge der durch die versteiften Bereiche signifikant erhöhten Steifigkeit des Verpackungsbeutels kann weitgehend auf den Einsatz von zusätzlich erforderlichen Umverpackungen für die Lagerung und den Transport, insbesondere bei Verpackungsbeuteln aus flexiblem Folienmaterial mit flüssigem oder bruchempfindlichem Inhalt, verzichtet werden. Die Ausbildung des zumindest einen versteiften Teilbereichs kann vor, nach oder gleichzeitig mit der Herstellung einer ersten Quersiegelnaht an einem freien Ende des Folienschlauchs erfolgen. Das Verfahren zur Herstellung eines derartig versteiften Verpackungsbeutels kann betriebssicher und kostengünstig durchgeführt werden.The inventive method for producing a packaging bag having the features of claim 1 has the advantage over that of a flexible film material, a packaging bag is produced, which has at least one flexible and a stiffened portion. Here, a stiffening of the packaging bag is achieved in that in a first process step from a tubular shaped film material, an elongated closed film tube is produced. Thereafter, in a further process step before or after or simultaneously with the production of a first transverse sealing seam at the free end (foot end) of the film tube made at least one stiffened portion. Subsequently, a filling of the semifinished packaging bag can be carried out and finally a second transverse sealing seam (at the head end) of the film tube can be produced. As a result of the stiffened areas significantly increased stiffness of the packaging bag can be largely dispensed with the use of additionally required outer packaging for storage and transport, especially in packaging bags made of flexible film material with liquid or fragile content. The formation of the at least one stiffened partial region can take place before, after or simultaneously with the production of a first transverse sealing seam at a free end of the film tube. The method for producing such a stiffened packaging bag can be performed reliably and inexpensively.

Erfindungsgemäß erfolgt die Anhäufung von flexiblem Folienmaterial mittels eines zylinderförmigen Werkzeugs, welches an einem Außenumfang des Folienschlauchs angeordnet ist. Durch kurzzeitiges Andrücken des Werkzeugs von außen an den kontinuierlich geförderten bzw. bewegten Folienschlauch häuft sich das flexible Folienmaterial an einer der Förderrichtung zugewandten Stirnseite des Werkzeugs an. Diese Werkzeugvorrichtung weist einen einfachen und somit kostengünstigen Aufbau auf und kann bei den eingesetzten Produktionsmaschinen auch nachträglich eingebaut werden.According to the invention, the accumulation of flexible film material takes place by means of a cylindrical tool which is arranged on an outer circumference of the film tube. By briefly pressing the tool from the outside to the continuously conveyed or moved film tube, the flexible film material accumulates at one of the conveying direction facing end side of the tool. This tooling device has a simple and therefore cost-effective design and can also be installed later in the production machines used.

Die Unteransprüche zeigen bevorzugte Weiterbildungen der Erfindung.The dependent claims show preferred developments of the invention.

Gemäß der Erfindung wird der versteifte Teilbereich durch Anhäufung von flexiblem Folienmaterial an der Position des versteiften Teilbereichs und anschließendem Erhärten der Anhäufung von Folienmaterial hergestellt und/oder der versteifte Teilbereich wird an einem glatten Bereich des flexiblen Folienmaterials hergestellt und der glatte Bereich wird versteift, sodass eine wandartige Versteifung entsteht. Hierbei ist der Einsatz von lediglich einem einzigen flexiblen Folienmaterial hinsichtlich der Material- und Herstellungskosten sowie der Anzahl der Verfahrensschritte und des erforderlichen Zeitaufwands von Vorteil.According to the invention, the stiffened portion is made by accumulating flexible sheet material at the stiffened portion position and then hardening the accumulation of sheet material, and / or the stiffened portion is made on a smooth portion of the flexible sheet material and the smooth portion is stiffened so that a stiffened portion wall-like stiffening arises. Here, the use of only a single flexible sheet material in terms of material and manufacturing costs and the number of process steps and the time required to advantage.

Erfindungsgemäß wird das Anhäufen des Folienmaterials vorzugsweise durch ein einfaches oder mehrfaches Falten des Folienmaterials erreicht, wobei durch ein Raffen des Folienmaterials in kleinen definierten oder undefinierten Falten eine Art Faltenbalg ausgebildet wird. Dieses Raffen des Folienmaterials wird hierbei auf einfache Weise und im Wesentlichen ohne einen größeren, nennenswerten Zeitaufwand durchgeführt.According to the invention, the accumulation of the film material is preferably achieved by a single or multiple folding of the film material, wherein a kind of bellows is formed by gathering the film material in small defined or undefined folds. This shirring of the film material is in this case carried out in a simple manner and essentially without a major, significant expenditure of time.

Vorzugsweise wird der versteifte Teilbereich als eine oder eine Mehrzahl von Verstärkungsrippen ausgebildet. Hierbei kann die Verstärkungsrippe als nach innen oder nach außen gerichtete, umlaufende Rippe ausgebildet sein. Hierdurch kann das erfindungsgemäße Verfahren, je nach Einsatzart, zur Herstellung von Verpackungen mit den jeweils individuell erforderlichen Steifigkeiten kosteneffizient auf demselben Maschinentyp eingesetzt werden.Preferably, the stiffened portion is formed as one or a plurality of reinforcing ribs. Here, the reinforcing rib may be formed as inwardly or outwardly directed, circumferential rib. As a result, the method according to the invention, depending on the type of application, can be used cost-effectively on the same machine type for the production of packages with the respectively individually required stiffnesses.

Gemäß einer weiteren bevorzugten Ausgestaltung der Erfindung wird der versteifte Teilbereich durch Erhärten des Folienmaterials mittels Strahlung, insbesondere mittels Wärme oder UV-Licht oder Elektronenstrahlen hergestellt. Hierbei kann die gleiche, erprobte Technik wie für die Siegelung der Fuß- und Kopfnaht des Folienschlauchs ohne einen größen zusätzlichen Maschinenaufbau eingesetzt werden.According to a further preferred embodiment of the invention, the stiffened portion is produced by hardening the film material by means of radiation, in particular by means of heat or UV light or electron beams. Here, the same, proven technique as for the sealing of the foot and top seam of the film tube can be used without a large additional machine structure.

Vorzugsweise ist das flexible Folienmaterial aus mehreren Lagen hergestellt, die eine äußere Lage, eine härtbare Lage, eine Barrierelage und eine Abdichtungslage umfassen, wobei die härtbare Lage zu einem Polymer vernetzbar ist. Somit ist eine mehrlagige Folie erforderlich, wodurch eine vereinfachte und kosteneffizientere Handhabung gegenüber mehreren Einzelfolien erreicht wird.Preferably, the flexible sheet material is made of multiple layers comprising an outer layer, a curable layer, a barrier layer, and a sealing layer, wherein the curable layer is crosslinkable into a polymer. Thus, a multi-layer film is required, whereby a simplified and more cost-effective handling over several individual films is achieved.

Weiterhin betrifft die Erfindung einen Verpackungsbeutel aus einem flexiblen Folienmaterial, der eine erste Quersiegelnaht, eine zweite Quersiegelnaht, zumindest einen flexiblen Teilbereich und zumindest einen versteiften Teilbereich umfasst. Hierdurch wird ein Verpackungsbeutel mit einer neuartigen Haptik bereitgestellt, wobei die versteiften Teilbereiche eine ausreichende Steifigkeit des Verpackungsbeutels sicherstellen. Hierbei ist der erfindungsgemäße Verpackungsbeutel auf bekannten Maschinen mit minimal erforderlichen Zusatzeinrichtungen kostengünstig herstellbar.Furthermore, the invention relates to a packaging bag made of a flexible film material comprising a first transverse seam, a second transverse seam, at least one flexible portion and at least one stiffened portion. As a result, a packaging bag is provided with a novel feel, wherein the stiffened portions ensure sufficient rigidity of the packaging bag. Here, the packaging bag according to the invention is inexpensive to produce on known machines with minimally required additional equipment.

Besonders bevorzugt sind sowohl der flexible Teilbereich als auch der versteifte Teilbereich aus dem flexiblen Folienmaterial hergestellt, wodurch eine einfache und kostengünstige Herstellung ermöglicht wird.Particularly preferably, both the flexible portion and the stiffened portion are made of the flexible sheet material, whereby a simple and inexpensive production is possible.

Vorzugsweise ist der versteifte Teilbereich des erfindungsgemäßen Verpackungsbeutels als nach innen vorragende oder nach außen vorragende Verstärkungsrippe gebildet. Durch diese Formgebung des Verpackungsbeutels wird als neuartiges Verpackungskonzept eine zusätzliche haptische Erkennung der Verpackung durch den Verbraucher ermöglicht.Preferably, the stiffened portion of the packaging bag according to the invention is formed as inwardly projecting or outwardly projecting reinforcing rib. As a result of this shaping of the packaging bag, a new kind of packaging concept enables an additional haptic recognition of the packaging by the consumer.

Gemäß einer weiteren bevorzugten Ausgestaltung der Erfindung wird die Verstärkungsrippe in Umfangsrichtung des Verpackungsbeutels als umlaufender Ring und/oder die Verstärkungsrippe in Längsrichtung des Verpackungsbeutels ausgebildet. Hierdurch ist es möglich, das Folienmaterial der Verpackung je nach Einsatzzweck entsprechend sowohl in Längs- als auch Querrichtung des Folienschlauchs mit minimalem Zeit- und Kostenaufwand mittels Verstärkungsrippen zu versteifen. Zudem kann die Verstärkungsrippe des Verpackungsbeutels in einer runden, oder ovalen oder dreieckigen oder rechteckigen oder polygonen Umfangsgestalt geformt werden, wodurch ggf. vorgegebene Querschnitte der Verpackungsbeutel mit entsprechender Formsteifigkeit herstellbar sind. Ferner können die versteiften Teilbereiche auch eine Gitternetzform bereitstellen.According to a further preferred embodiment of the invention, the reinforcing rib is formed in the circumferential direction of the packaging bag as a circumferential ring and / or the reinforcing rib in the longitudinal direction of the packaging bag. This makes it possible to stiffen the film material of the packaging according to the purpose according to both in the longitudinal and transverse direction of the film tube with minimal time and cost by means of reinforcing ribs. In addition, the reinforcing rib of the packaging bag can be formed in a round, or oval or triangular or rectangular or polygonal peripheral shape, whereby possibly predetermined cross sections of the packaging bag can be produced with appropriate stiffness. Furthermore, the stiffened portions may also provide a grid shape.

Besonders bevorzugt sind am erfindungsgemäßen Verpackungsbeutel eine Mehrzahl von gleichartigen Verstärkungsrippen zueinander beabstandet angeordnet. Hierdurch kann eine gleichmäßige Versteifung eines Teils oder der gesamten Verpackung mit minimalem Zeit- und Kostenaufwand bei der Herstellung erreicht werden.Particularly preferably, a plurality of identical reinforcing ribs are arranged at a distance from one another on the packaging bag according to the invention. As a result, a uniform stiffening of a part or the entire package can be achieved with minimal time and cost in the production.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Nachfolgend wird ein Ausführungsbeispiel der Erfindung unter Bezugnahme auf die begleitende Zeichnung im Detail beschrieben. In der Zeichnung ist:

Figur 1
eine schematische Seitenansicht einer Ausführungsform des erfindungsgemäßen Verpackungsbeutels,
Figur 2
eine schematische Schnittansicht zur Herstellung des Verpackungsbeutels,
Figur 3
eine Seitenansicht einer ersten Halbschale des Werkzeugs zur Faltenbildung am Folienmaterial,
Figur 4
eine vergrößerte Seitenansicht eines mehrlagigen Folienmaterials des erfindungsgemäßen Verpackungsbeutels, und
Figur 5
eine perspektivische Ansicht eines Teils einer Maschine zur Herstellung des Verpackungsbeutels.
Hereinafter, an embodiment of the invention will be described in detail with reference to the accompanying drawings. In the drawing is:
FIG. 1
a schematic side view of an embodiment of the packaging bag according to the invention,
FIG. 2
a schematic sectional view for producing the packaging bag,
FIG. 3
a side view of a first half-shell of the tool for wrinkling on the film material,
FIG. 4
an enlarged side view of a multilayer film material of the packaging bag according to the invention, and
FIG. 5
a perspective view of a part of a machine for producing the packaging bag.

Ausführungsform der ErfindungEmbodiment of the invention

Nachfolgend wird unter Bezugnahme auf die Figuren 1 bis 5 ein Verfahren zur Herstellung eines Verpackungsbeutels aus flexiblem Folienmaterial sowie ein derartiger Verpackungsbeutel detailliert beschrieben.The following is with reference to the FIGS. 1 to 5 a method for producing a packaging bag of flexible sheet material and such a packaging bag described in detail.

In Figur 1 ist eine schematische Seitenansicht einer Ausführungsform des erfindungsgemäßen Verpackungsbeutels 1 dargestellt, der aus einem flexiblem Folienmaterial 2 (siehe Figur 5) hergestellt ist, das durch eine Längssiegelnaht 3 zu einem Folienschlauch 4 versiegelt wurde. Der Verpackungsbeutel 1 weist in Bezug auf eine Achsenrichtung A an einem unteren Ende 5a eine erste Quersiegelnaht 5 (Fußnaht) und an einem oberen Ende 7a eine zweite Quersigelnaht 7 (Kopfnaht) auf, welche den befüllten Verpackungsbeutel 1 verschließen.In FIG. 1 is a schematic side view of an embodiment of the packaging bag 1 according to the invention shown, which consists of a flexible sheet material 2 (see FIG. 5 ), which has been sealed by a longitudinal sealing seam 3 to a film tube 4. With regard to an axis direction A, the packaging bag 1 has at a lower end 5a a first transverse seam 5 (bottom seam) and at an upper end 7a a second transverse seam 7 (top seam) which closes the filled packaging bag 1.

Darüber hinaus umfasst der Verpackungsbeutel 1 flexible Teilbereiche 8, von denen in dieser Abbildung beispielhaft vier flexible Teilbereiche 8 dargestellt sind. Zwischen diesen flexiblen Teilbereichen 8 sind senkrecht zur Achsenrichtung verlaufende, aus gerafftem Folienmaterial versteifte Teilbereiche 6, 6' angeordnet, die ringförmig umlaufende Verstärkungsrippen des Verpackungsbeutels 1 bilden.In addition, the packaging bag 1 comprises flexible subregions 8, of which four flexible subregions 8 are shown by way of example in this illustration. Arranged between these flexible subareas 8 are subregions 6, 6 'which are perpendicular to the axial direction and are stiffened from gathered film material and which form annularly extending reinforcing ribs of the packaging bag 1.

Die Verstärkungsrippen können eine runde oder ovale oder dreieckige oder rechteckige oder polygone Umfangsgestalt aufweisen. Wie aus Figur 1 ersichtlich, sind die in dieser Figur beispielhaft dargestellten, aus gerafftem Folienmaterial versteiften Teilbereiche 6 hierbei als nach außen vorragende Verstärkungsrippen gebildet und der eine beispielhaft dargestellte, aus gerafftem Folienmaterial versteifte Teilbereich 6' ist als eine nach innen vorragende Verstärkungsrippe gebildet. Zwischen zwei dieser aus gerafftem Folienmaterial versteiften Teilbereiche 6 sind zudem zwei in Achsenrichtung A aus gerafftem Folienmaterial verlaufende versteifte Teilbereiche 6" dargestellt, die als Verstärkungsrippen in Längsrichtung des Verpackungsbeutels 1 dienen und diesem eine zusätzliche Formstabilität verleihen. Zwischen den aus gerafftem Folienmaterial versteiften Teilbereichen 6" sind glatte Bereiche 19 des flexiblen Folienmaterials 2 angeordnet, die ebenfalls versteift ausgebildet sind und versteifte, glatte Wandbereiche bilden. Zudem umfasst der erfindungsgemäße Verpackungsbeutel 1 ein in der Nähe der zweiten Quersiegelnaht 7 angeordnetes Ausgießelement 10, das zum Ausgießen von flüssigen Inhaltsgütern verwendet werden kann, ohne die zweite Quersiegelnaht 7 öffnen zu müssen.The reinforcing ribs may have a round or oval or triangular or rectangular or polygonal peripheral shape. How out FIG. 1 it can be seen, the partial regions 6 stiffened by means of shirred foil material in this figure are in this case formed as outwardly projecting reinforcing ribs and the one illustrated by way of example, made of shirred foil material stiffened portion 6 'is formed as an inwardly projecting reinforcing rib. Between two of these gathered from shirred sheet material portions 6 are also shown in the axial direction A of gathered film material extending stiffened portions 6 "shown, which serve as reinforcing ribs in the longitudinal direction of the packaging bag 1 and give this an additional dimensional stability. Smooth areas 19 of the flexible film material 2 are arranged, which are also stiffened and stiffened, smooth wall areas form. In addition, the packaging bag 1 according to the invention comprises a pouring element 10 arranged in the vicinity of the second transverse sealing seam 7, which can be used for pouring liquid contents without having to open the second transverse seam 7.

Nachfolgend wird ein Verfahren zur Herstellung des erfindungsgemäßen Verpackungsbeutels 1 aus flexiblem Folienmaterial 2 beschrieben. Derartige Verpackungsbeutel 1 werden üblicherweise auf vertikalen oder horizontalen Schlauchbeutelmaschinen hergestellt. In der perspektivischen Darstellung von Figur 5 ist ein Teil einer derartigen Schlauchbeutelmaschine dargestellt. Wie aus Figur 5 ersichtlich, wird der Schlauchbeutelmaschine das flexible Folienmaterial 2 zugeführt, das über eine Formschulter 18 schlauchförmig umgeformt wird, und in einem ersten Verfahrensschritt eine Längssiegelnaht 3 hergestellt, um einen länglich geschlossenen Folienschlauch 4 auszubilden.Hereinafter, a method for producing the packaging bag 1 of flexible sheet material 2 according to the present invention will be described. Such packaging bags 1 are usually produced on vertical or horizontal tubular bag machines. In the perspective view of FIG. 5 is a part of such a tubular bag machine shown. How out FIG. 5 As can be seen, the tubular bag machine is supplied with the flexible film material 2, which is tubular shaped via a forming shoulder 18, and in a first method step a longitudinal sealing seam 3 is produced in order to form an elongated closed film tube 4.

In einem zweiten Verfahrensschritt wird eine erste Quersiegelnaht 5 (Fußnaht) an einem freien Ende 5a des Folienschlauchs 4 hergestellt und anschließend wenigstens ein ringförmig umlaufender, aus gerafftem Folienmaterial versteifter Teilbereich 6 am flexiblen Folienschlauch 4 hergestellt. Dieser aus gerafftem Folienmaterial versteifte Teilbereich 6 wird, wie aus der schematischen Schnittansicht von Figur 2 ersichtlich, dadurch erzeugt, dass ein Werkzeug 11, das eine erste Halbschale 11 a und eine zweite Halbschale 11 b umfasst, kurzzeitig an den Folienschlauch 4 herangeführt wird, sodass sich das zugeführte Folienmaterial 4 an einer Stirnseite 12 des Werkzeugs 11 anhäuft. Diese Anhäufung des Folienmaterials 4 erfolgt vorzugsweise durch ein einfaches oder mehrfaches Falten bzw. ein Raffen des Folienmaterials 4 in kleinen definierten oder undefinierten Falten, die eine Art Faltenbalg bilden. In der Darstellung von Figur 2 ist hierbei eine Faltenbildung mit von der Außenseite des Folienschlauchs 4 nach außen gerichteten Falten veranschaulicht. Eine Faltenbildung mit nach innen gerichteten Falten ist ebenso möglich.In a second process step, a first transverse seam 5 (bottom seam) is produced at a free end 5a of the film tube 4, and subsequently at least one annular peripheral region 6 made of gathered film material is produced on the flexible film tube 4. This stiffened from gathered film material portion 6 is, as shown in the schematic sectional view of FIG. 2 can be seen, generated by a tool 11, which comprises a first half-shell 11a and a second half-shell 11b, briefly brought to the film tube 4, so that the supplied film material 4 accumulates on an end face 12 of the tool 11. This accumulation of the film material 4 is preferably carried out by a simple or multiple folding or shirring of the film material 4 in small defined or undefined folds, which form a kind of bellows. In the presentation of FIG. 2 Here, a wrinkling is illustrated with directed from the outside of the film tube 4 outward wrinkles. Wrinkling with inward wrinkles is also possible.

Die geraffte Anhäufung von flexiblem Folienmaterial 2 kann vorzugsweise mittels Strahlung, insbesondere mittels Wärme oder UV-Licht oder Elektronenstrahlen zu einem aus gerafftem-Folienmaterial versteiften Teilbereich 6 bzw. 6' ausgebildet werden. Wie in der vergrößerten Seitenansicht des Folienmaterials 2 von Figur 4 dargestellt, ist das Folienmaterial 2 mehrlagig ausgebildet und umfasst eine äußere Lage 13, eine härtbare Lage 14, eine Barrierelage 15 sowie eine Abdichtungslage 16. Die härtbare Lage 14 ermöglicht dabei die Versteifung des angehäuften Folienmaterials, wobei sich die härtbare Lage 14 vorzugsweise zu einem Polymer vernetzt und entweder eine nach außen vorragende oder nach innen vorragende Verstärkungsrippe (siehe Figur 1) bildet.The shirred accumulation of flexible film material 2 can preferably be formed by means of radiation, in particular by means of heat or UV light or electron beams, to a subregion 6 or 6 'stiffened from gathered film material. As in the enlarged side view of the film material 2 of FIG. 4 2, the film material 2 has a multilayered construction and comprises an outer layer 13, a curable layer 14, a barrier layer 15 and a sealing layer 16. The curable layer 14 enables stiffening of the accumulated sheet material, the curable layer 14 preferably becoming a polymer cross-linked and either an outwardly projecting or inwardly projecting reinforcing rib (see FIG. 1 ).

Alternativ kann in diesem zweiten Verfahrensschritt auch entweder zuerst der aus gerafftem Folienmaterial versteifte Teilbereich 6 und anschließend die erste Quersiegelnaht 5 hergestellt werden oder der aus gerafftem Folienmaterial versteifte Teilbereich 6 und die erste Quersiegelnaht 5 gleichzeitig hergestellt werden.Alternatively, in this second method step, either first the part region 6 stiffened from gathered film material and then the first transverse seam 5 can be produced or the part region 6 stiffened from gathered film material and the first transverse seam 5 can be produced simultaneously.

Der oben beschriebene zweite Verfahrensschritt kann wiederholt durchgeführt werden, um mehrere, aus gerafftem Folienmaterial versteifte Teilbereiche 6 bzw. 6' voneinander beabstandet herzustellen, die als Verstärkungsrippen eine signifikant verbesserte Formsteifigkeit des erfindungsgemäßen Verpackungsbeutel 1 bewirken.The second method step described above can be carried out repeatedly in order to produce a plurality of partial regions 6 and 6 'which are stiffened from gathered sheet material and which, as reinforcing ribs, bring about a significantly improved dimensional stability of the packaging bag 1 according to the invention.

Die glatten, verstreiften Bereiche 19 werden durch Bestrahlung des glatten Folienmaterials hergestellt.The smooth, striped regions 19 are produced by irradiation of the smooth film material.

Wie aus der Seitenansicht der ersten Halbschale 11a des Werkzeugs 11 zur Faltenbildung am Folienmaterial 2 von Figur 2 ersichtlich, weisen die erste Halbschale 11 a sowie die hier nicht dargestellte zweite Halbschale 11 b eine innere Ausnehmung 9 auf. Durch diese innere Ausnehmung 9 wird verhindert, dass insbesondere die bereits hergestellten, aus gerafftem Folienmaterial versteiften Teilbereiche 6 mit deren nach außen vorragenden Verstärkungsrippen nicht mit den Halbschalen 11a, 11 b des Werkzeugs 11 in Berührung kommen, das zur Herstellung eines weiteren, aus gerafftem Folienmaterial versteiften Teilbereichs 6 an den Folienschlauch 4 herangeführt wird. Hierdurch kann eine Beschädigung von schon hergestellten Verstärkungsrippen verhindert werden.As seen from the side view of the first half-shell 11a of the tool 11 for wrinkling on the film material 2 of FIG. 2 can be seen, the first half-shell 11 a and the second half-shell 11 b, not shown here, an inner recess 9 on. By means of this inner recess 9 it is prevented, in particular, that the partial regions 6, which are already stiffened, made from gathered sheet material, do not come into contact with the half shells 11a, 11b of the tool 11 with their outwardly projecting reinforcing ribs, which is used to produce a further, shirred foil material stiffened portion 6 is brought to the film tube 4. As a result, damage to already produced reinforcing ribs can be prevented.

Nachdem der halbfertige Verpackungsbeutel 1 über ein Füllrohr 17 (siehe Figur 5) befüllt wurde, wird in einem abschließenden Verfahrensschritt eine zweite Quersiegelnaht 7 (Kopfnaht) am Folienschlauch 4 hergestellt und der Verpackungsbeutel 1 somit verschlossen. Bei der Herstellung der zweiten Quersiegelnaht 7 kann vorzugsweise gleichzeitig auch die erste Quersiegelnaht 5 eines weiteren, nachfolgend herzustellenden Verpackungsbeutels hergestellt werden. Abschließend wird der fertige Verpackungsbeutel vom nachfolgenden Folienschlauch 4 abgetrennt.After the semi-finished packaging bag 1 via a filling tube 17 (see FIG. 5 ) was filled, in a final process step, a second transverse seam 7 (top seam) produced on the film tube 4 and the packaging bag 1 thus closed. In the production of the second transverse seam 7, the first transverse seam 5 of a further, subsequently produced packaging bag can preferably also be produced. Finally, the finished packaging bag is separated from the subsequent film tube 4.

Die in Figur 1 dargestellten, aus gerafftem Folienmaterial versteiften Teilbereiche 6" in Achsenrichtung A des Verpackungsbeutels 1 können durch Raffen und Anhäufen von Folienmaterial 2 in Umfangsrichtung des Folienschlauchs 4 hergestellt werden. Das Ausgießelement 10 kann durch punktuelles Anhäufen und Erhärten von Folienmaterial hergestellt werden.In the FIG. 1 can be produced by shirring and accumulation of film material 2 in the circumferential direction of the film tube 4, stiffened from gathered sheet material portions 6 "in the direction of axis A of the packaging bag 1. The pouring element 10 can be prepared by punctiform accumulation and hardening of film material.

Der erfindungsgemäße Verpackungsbeutel weist insbesondere den Vorteil auf, dass einzig aus seinem flexiblen Ausgangs-Folienmaterial ein oder mehrere versteifte Teilbereiche ausgebildet sind, die eine signifikante Versteifung bzw. beträchtliche Erhöhung der Formsteifigkeit des Verpackungsbeutels bereitstellen. Dadurch kann der Verpackungsbeutel, insbesondere für bruchempfindliche oder flüssige Inhaltsstoffe, so ausgelegt werden, dass bisher erforderliche stoß- und quetschsichere Umverpackungen zum Schutz des Inhaltes entfallen können.The packaging bag according to the invention has the particular advantage that only one or more stiffened portions are formed solely from its flexible starting sheet material, which provide a significant stiffening or considerable increase in the shape stiffness of the packaging bag. As a result, the packaging bag, in particular for fracture-sensitive or liquid ingredients, be designed so that previously required shock and crush-proof outer packaging to protect the content can be omitted.

Hierdurch ermöglicht es diese neuartige Verpackungsform, ohne Reglementierung der Verpackungsgröße bzw. des Verpackungsvolumens, die vorhandenen Lager- und Transportvolumina für die verpackten Güter weitaus effizienter und somit kostengünstiger als bisher zu nutzen.This makes it possible this novel form of packaging, without regulation of the packaging size or the packaging volume, the Existing storage and transport volumes for the packaged goods much more efficient and therefore cheaper to use than before.

Beim erfindungsgemäßen Verpackungsbeutel ist aufgrund der geringen erforderlichen Materialdicke des Folienmaterials zur Erzeugung der verbesserten Formsteifigkeit des Verpackungsbeutels zudem nur ein vergleichsweise geringer Materialeinsatz erforderlich, der ebenfalls zu den geringeren Gesamtkosten der Verpackung beiträgt. Das neuartige Herstellungsverfahren von versteiften Verpackungsbeuteln aus flexiblem Folienmaterial ist betriebssicher durchführbar und kann selbst auf bestehenden Schlauchbeutelmaschinen nachträglich integriert werden.In the case of the packaging bag according to the invention, due to the small required material thickness of the film material for producing the improved dimensional stability of the packaging bag, only a comparatively low use of material is required, which likewise contributes to the lower overall costs of the packaging. The novel production method of stiffened packaging bags made of flexible film material is operationally reliable and can be integrated later even on existing tubular bag machines.

Claims (13)

  1. Method of producing a packing bag from a flexible sheet material (2), having the following steps:
    a) producing a longitudinal sealing seam (3) on the sheet material (2), formed into a tube, in order to produce a longitudinally closed flexible sheet-material tube (4) from the flexible sheet material (2);
    b) producing a first transverse sealing seam (5) at a free end (5a) of the flexible sheet-material tube (4) and then producing at least one stiffened sub-region (6; 19) on the flexible sheet-material tube (4), or
    producing at least the stiffened sub-region (6; 19) on the flexible sheet-material tube (4) and then producing the first transverse sealing seam (5) at the free end (5a) of the flexible sheet-material tube (4); or
    producing a first transverse sealing seam (5) at a free end (5a) of the flexible sheet-material tube (4) and simultaneously producing at least one stiffened sub-region (6; 19) on the flexible sheet-material tube (4), and
    c) producing a second transverse sealing seam (7) on the flexible sheet-material tube (4), wherein the stiffened sub-region (6) is produced by accumulating flexible sheet material (2) at the position of the stiffened sub-region (6) and then hardening the accumulated formation of sheet material (2), and/or the stiffened sub-region (19) is produced on a smooth region of the flexible sheet material (2) by means of hardening the sheet material (2),
    characterized in that the accumulated formation of flexible sheet material (2) is achieved using a cylindrical tool (11), which is arranged on an outer circumference of the flexible sheet-material tube (4), in order to make it possible for flexible sheet material (2) to be accumulated on an end side (12) of the tool (11).
  2. Method according to Claim 1, characterized in that the accumulating step is achieved by folding sheet material (2) one or more times.
  3. Method according to one of the preceding claims, characterized in that the stiffened sub-region (6) is designed as one or more reinforcing ribs.
  4. Method according to Claim 3, characterized in that the reinforcing rib is directed inwards or outwards.
  5. Method according to one of the preceding claims, characterized in that the stiffened sub-region (6; 19) is produced by hardening the sheet material (2) by means of radiation, in particular by means of heat or UV light or electron beams.
  6. Method according to one of the preceding claims, characterized in that the flexible sheet material (2) is produced from a plurality of layers, wherein at least one of the layers is a hardenable layer (14) which can be crosslinked to form a polymer.
  7. Method according to Claim 6, characterized in that the flexible sheet material (2) comprises an outer layer (13), the hardenable layer (14), a barrier layer (15) and a sealing layer (16).
  8. Packaging bag (1) made of a flexible sheet material (2), comprising:
    - a first transverse sealing seam (5),
    - a second transverse sealing seam (7),
    - a flexible sub-region (8), and
    - at least one stiffened sub-region (6; 19), which is produced by accumulating flexible sheet material (2) and then hardening the accumulated formation of sheet material, wherein flexible sheet material is accumulated by means of a cylindrical tool (11), which can be arranged on an outer circumference of the flexible sheet-material tube (4), in order to make it possible for flexible sheet material (2) to be accumulated on an end side (12) of the tool (11).
  9. Packaging bag (1) according to Claim 8, characterized in that the flexible sub-region (8) and the stiffened sub-region (6; 19) are produced from the flexible sheet material (2).
  10. Packaging bag according to Claim 8 or 9, characterized in that the stiffened sub-region (6; 19) is formed as an inwardly projecting reinforcing rib and/or as an outwardly projecting reinforcing rib and/or as a pouring element (10).
  11. Packaging bag according to Claim 10, characterized in that the reinforcing rib is formed, in the circumferential direction of the packaging bag (1), as an encircling ring and/or the reinforcing rib is formed in the longitudinal direction of the packaging bag (1).
  12. Packaging bag according to Claim 10 or 11, characterized in that the reinforcing rib is of round or oval or triangular or rectangular or polygonal circumferential configuration.
  13. Packaging bag according to one of Claims 8 to 12, characterized in that the sheet material (2) is multilayered and has a hardenable layer for creating the reinforcing rib (6).
EP10171864A 2009-09-10 2010-08-04 Method for manufacturing a packaging bag from flexible film material and such a packaging bag Not-in-force EP2295335B1 (en)

Applications Claiming Priority (1)

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DE102009029357A DE102009029357A1 (en) 2009-09-10 2009-09-10 Method for producing a packaging bag made of flexible film material and such a packaging bag

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EP2295335A1 EP2295335A1 (en) 2011-03-16
EP2295335B1 true EP2295335B1 (en) 2012-05-09

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DE (1) DE102009029357A1 (en)

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Publication number Priority date Publication date Assignee Title
US3354601A (en) * 1965-06-21 1967-11-28 Wayne V Rodgers Method of making stand-up package
DE1761309A1 (en) * 1968-05-02 1971-05-13 Hans Lissner Bag-like container made of plastic film
DE1959466A1 (en) * 1969-11-27 1971-06-03 Johnson & Johnson Thermoplastic film or sheet with ribs for - container production
US3684642A (en) * 1971-02-09 1972-08-15 Du Pont Corrugated packaging film and its preparation
DE2234113A1 (en) * 1972-07-12 1974-01-24 Hesser Ag Maschf METHOD OF MANUFACTURING POUCH PACKS
CH608755A5 (en) * 1976-09-30 1979-01-31 Sig Schweiz Industrieges
DE3512597A1 (en) * 1985-04-06 1986-10-16 Karl-Heinz Dr. 4802 Halle Sengewald PACKAGING DESIGNED AS A CARRYING BAG
DE4012515C2 (en) * 1990-04-14 1999-02-18 Biomet Deutschland Gmbh Process for folding a tubular film covering to protect a surgical instrument
DE4203798C2 (en) * 1992-02-10 1999-07-15 Rovema Gmbh Method and device for producing a tubular bag
DE19603371B4 (en) * 1996-01-31 2006-12-14 Rovema - Verpackungsmaschinen Gmbh Tubular bag machine with an asymmetric forming shoulder for the production of tubular bags
DE19539832B4 (en) * 1995-10-26 2005-09-15 Rovema Verpackungsmaschinen Gmbh Method and apparatus for producing bags having at least one stiffening area extending along a line
DE19957891A1 (en) * 1999-12-01 2001-06-07 Rovema Gmbh Tubular bag machine
DE10027581B4 (en) * 2000-06-02 2004-07-08 Hastamat Verpackungstechnik Gmbh & Co. Kg Tubular bag machine for the production of bags with edge sealing
DE102006010139A1 (en) * 2006-03-06 2007-09-13 Rovema - Verpackungsmaschinen Gmbh Tubular bag machine for producing bag e.g. beverage bag, has edges welding devices including sealing surfaces, of which one sealing surface which is provided for head seam is outlined
DE202007008772U1 (en) * 2007-06-22 2008-10-30 Bischof + Klein Gmbh & Co. Kg Pouch made of sweat or sealable foil
US20100098354A1 (en) * 2008-10-20 2010-04-22 Fraser Robert W Bag and Methods of Making the Same

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DE102009029357A1 (en) 2011-03-24
ATE556948T1 (en) 2012-05-15

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