EP0577615B1 - Tubular sachet package - Google Patents
Tubular sachet package Download PDFInfo
- Publication number
- EP0577615B1 EP0577615B1 EP92905128A EP92905128A EP0577615B1 EP 0577615 B1 EP0577615 B1 EP 0577615B1 EP 92905128 A EP92905128 A EP 92905128A EP 92905128 A EP92905128 A EP 92905128A EP 0577615 B1 EP0577615 B1 EP 0577615B1
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- EP
- European Patent Office
- Prior art keywords
- packaging
- weakening
- layer
- middle layer
- film web
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5827—Tear-lines provided in a wall portion
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- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/54—Cards, coupons, or other inserts or accessories
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- 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
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/07—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles
Definitions
- the invention relates to a tubular bag packaging, in particular for medical supplies such as bandages or rigid bandages, consisting of a tough film web formed in several layers in the composite, which is formed by gluing or welding its opposite edge regions in the form of a tube enveloping the packaged goods with a longitudinal seam and attached to the Seals are sealed by two parallel transverse seams and has an opening aid for quick and complete tearing open for the purpose of removing the contents, at least one of the transverse seams having a controllable predetermined weakening in the form of an incision, which cuts through the transverse seam only in an outer part of its width, starting from from the area of this incision, a line of weakness extending over the length of the pack is provided for the tear.
- a tubular bag packaging for pressure-sensitive goods for example staggered cheese slices, is known from FR-A-2 190 684.
- a film web made of composite material of polyamide and polyethylene is used for packaging, this forming the inner layer and polyamide the outer layer.
- Adhesion or welding of edge areas of the film web is designed as a longitudinal sealing seam, while the ends are sealed by transverse seams.
- An incision in the ends of the longitudinal seam in the area of the inner angle of the seam fin serves as an opening aid.
- the notch preferably extends into the intersection of the longitudinal and transverse seams. This results in a tear tab at the end of the longitudinal seam, which is used to open the packaging by pulling this tab along the longitudinal seam line.
- a disadvantage for the consumer after the longitudinal seam has been torn off is the difficulty in removing the content because the longitudinal seam does not also open the transverse seams and the manipulation to remove the content is therefore cumbersome. There is also no line of weakness in the direction of the intended tear at the bottom of the longitudinal seam fin, which is why only a very tear-resistant film web can be used. This may be permissible for foodstuffs that only remain in the packaging for a short time as a result of a limited shelf life guarantee, but not for medical supplies such as bandages and cast bandages that may remain in the packaging for a longer period of time, transported, stacked, rearranged or distributed in them and therefore need an extremely durable tubular bag packaging, which, however, must be easy, quick and completely open at the moment of use.
- From DE - OS 36 18 765 is a tubular bag packaging for bar or bar-shaped goods, for example chocolate products, consisting of a film or paper-like wrapping with two parallel seams running parallel to one another by gluing or welding and a longitudinal seam running perpendicular to these transverse seams, the headbands protruding as a tear tab and also firmly connected to one another by gluing or welding, and which can be opened by pulling on the tear tab along this seam line, are known.
- a cutout is formed in a headband of the tear-open flap in the region of a transverse seam and at least tangent to the longitudinal seam and open to the lateral edge, namely an approximately semicircular notch produced by punching out.
- a pack for piece goods is known from CH 670 436 A5, which has a longitudinal fin seam and two transverse fin seams and is provided with an opening aid.
- This opening aid consists of two reinforcement strips, which are located at a distance at least in the area of one of the transverse fin seams, at least one notch being arranged on the edge of this transverse fin seam and within this distance.
- a single-layer material web is used as the packing material, which is why it very easily forms transverse cracks when opening by pulling the transverse fin parts on both sides of the notch and then does not release the contents, or releases them only very incompletely.
- the reinforcement strips e.g. Tapes made of polyester or the application of hot melt fabric are intended to prevent the entire length of the package from being opened without causing a transverse tear.
- the opening aid is therefore not realized by weakening the packaging material, but on the contrary by reinforcement strips next to the imaginary, un weakened tear line.
- DE 28 58 166 C2 discloses a parallelepiped-shaped inner wrapper for cigarettes made of thin packaging material, for example tinfoil or the like.
- the packaging material is locally covered in the area of a tear line with a covering layer of tearable glue material, with each separating cut in addition, an incision is made at an angle and opposite to the direction of tearing.
- this packaging technology which was developed especially for a cigarette pack, is absolutely unsuitable for a tubular bag packaging for medical supplies due to the stress to be expected when carrying medical supplies in medical bags, backpacks, car pharmacies or the like. Apart from the absence of the cover layer outside the actual tear lines, environmental and transport influences would stick and destroy the glue seams.
- the invention has for its object to provide a tubular bag packaging of the type mentioned in the preamble of the main claim, which is suitable for overcoming the aforementioned difficulties and technical limits, is particularly suitable for a very durable packaging of medical supplies such as bandages or cast bandages Controlled tearing of the tubular bag in the longitudinal direction from cross seam to cross seam for quick and complete opening and making the packaged goods accessible and can be produced with conventional mechanical packaging and sealing devices at high packing speeds.
- This object is achieved in a tubular bag packaging of the type mentioned with the invention by a design according to the characterizing part of claim 1.
- This design results in a weakening line extending along the length of the pack between the incisions of the transverse seams, along which a controlled bag tear-off approximately parallel to the longitudinal seam is easily possible.
- the weakening line forms, as it were, a predetermined breaking line, along which the tearing is controlled in the figurative sense like a zipper, and this despite the use of a comparatively very tear-resistant and tough, multilayer composite film.
- the tubular bag Due to the complete longitudinal elevation, the tubular bag is divided roughly in a longitudinal plane of symmetry into two places, which can then be folded away from the elevation for easy removal of the content, so that the content, for example a bandage, is immediately optimally accessible.
- the formation of the incisions on the transverse seams optimally resolves the tearing open because these transverse seams, which are corrugated in the direction of their course, that is to say transversely to the packaging, are easily accessible by hand are.
- the packaging is opened gently and completely, without the sensitive packaged goods being crushed or damaged.
- An expedient method for producing a film web with a composite of three layers, the middle layer being formed with a weakening line having tear-open aids, is characterized in that a perforation or interrupted incisions or an incision is made in the middle layer during or after its production along an intended weakening line thermal embrittlement and then the middle layer prepared in this way is laminated on its top with the top layer and on its underside with the sealing layer.
- a film web produced by this process is characterized in that it is used to produce the tubular bag packaging according to the invention.
- the tubular bag packaging 10 is shown in FIG. 1, which is particularly suitable for long-term, safe and sterile storage of sensitive medical supplies such as bandages or stiff bandages. It consists of a very tear-resistant, extremely tough film web (Fig. 2) formed in several layers in the composite, which by gluing or welding its opposite edge regions in the form of a tube enveloping the packaged goods with a longitudinal seam 6 and at the ends by two parallel transverse seams 1, 2 is sealed. According to the invention, at least one of the transverse seams 1, but preferably both transverse seams 1, 2 each have a controllable predetermined weakening in the form of a wedge-shaped incision 3, 3a.
- Each incision is designed so that it cuts through the transverse seams 1 and 2 only in an outer part of their width without endangering the hermetic sealing of the tubular bag packaging, but far enough to ensure effective opening aid by notching.
- a weakening line 4 extends over the length of the pack 10 and is intended for the tear.
- this is designed such that at least one layer 12 (FIG. 2) of the composite forming the film web 14 has tear-open aids 5 such as incisions, perforations or thermal embrittlement or embossing. At least the cover layer 11 is not weakened.
- the layer 12 having the highest strength is preferably formed with tear-open aids 5.
- the multilayer composite of the film web 14 consists of a cover layer 11, preferably PE (polyethylene) and an extremely tough, strength-determining middle layer 12, preferably made of polyamide, and an inner layer 13 of a sealing material, preferably LDPE stretched on one side, the middle layer 12 is designed with tear aids 5.
- these can consist of a perforation or a zipper-like sequence of small cuts or of a thermally embrittled line of weakness or of a weakened impression.
- the middle layer 12 is designed with a comparatively high tear strength in a first direction and with a comparatively low tear strength in a second direction oriented transversely thereto, and that this middle layer 12 on the packaging is designed with such a strength Orientation of their inner structure is arranged that the direction of low tear strength in the longitudinal direction of the package 10, ie in the direction of the weakening line 4, runs.
- both transverse seams have an incision 3, 3a and the weakening line 4, as shown in FIG. 1, runs in the connecting line of the two incisions 3, 3a.
- a problem-free production of the multilayer film, in the layer composite of which the two outer layers 11 and 13 are not weakened, whereas the middle layer 12, which is invisible from the outside, is formed with a weakening line, is advantageously produced according to a further embodiment of the invention and with economic means, that a perforation or an interrupted sequence of incisions or a line of thermal embrittlement or a weakening impression is worked into the middle layer 12 during or after its production along the intended weakening line 4 using known mechanical devices and then the middle layer 12 thus prepared with the top layer 11 and the Seal layer 13 is laminated.
- the film web produced by this method is characterized in that it is used to manufacture the tubular bag packaging 10 according to the invention.
- tubular bag packaging according to the invention can be produced economically without problems and with a high operating speed on any tubular bag machine suitable for this purpose.
- the invention thus represents an optimal solution to the problem set at the beginning.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Packages (AREA)
- Wrappers (AREA)
- Tubes (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
Abstract
Description
Die Erfindung betrifft eine Schlauchbeutelverpackung, insbesondere für medizinisches Versorgungsgut wie Binden oder Steifverbände, bestehend aus einer in mehreren Schichten im Verbund gebildeten, zähen Folienbahn, die durch Klebung oder Schweißung ihrer entgegengesetzten Randbereiche in Form eines das Packgut umhüllenden Schlauches mit einer Längsnaht ausgebildet und an den Enden durch zwei parallele Quernähte versiegelt ist und eine Öffnungshilfe zum schnellen und vollständigen Aufreißen zwecks Entnahme des Inhalts aufweist, wobei zumindest eine der Quernähte eine steuerbar vorgegebene Schwächung in Form eines Einschnitts aufweist, welche die Quernaht nur in einem äußeren Teil ihrer Breite durchtrennt, wobei ausgehend vom Bereich dieses Einschnitts eine über die Länge der Packung verlaufende Schwächungslinie für den Aufriß vorgesehen ist.The invention relates to a tubular bag packaging, in particular for medical supplies such as bandages or rigid bandages, consisting of a tough film web formed in several layers in the composite, which is formed by gluing or welding its opposite edge regions in the form of a tube enveloping the packaged goods with a longitudinal seam and attached to the Seals are sealed by two parallel transverse seams and has an opening aid for quick and complete tearing open for the purpose of removing the contents, at least one of the transverse seams having a controllable predetermined weakening in the form of an incision, which cuts through the transverse seam only in an outer part of its width, starting from from the area of this incision, a line of weakness extending over the length of the pack is provided for the tear.
Aus der FR - A - 2 190 684 ist eine Schlauchbeutelverpackung für druckempfindliches Gut, beispielsweise gestaffelte Käsescheiben, bekannt. Zur Verpackung dient eine Folienbahn aus Verbundmaterial von Polyamid und Polyethylen, wobei dieses die Innenschicht und Polyamid die Außenschicht bildet. Klebung bzw. Schweißung von Randbereichen der Folienbahn ist als längsverlaufende Siegelnaht ausgebildet, während die Enden durch Quernähte dicht verschlossen sind. Als Öffnungshilfe dient ein Einschnitt in die Enden der Längsnaht im Bereich des inneren Winkels der Nahtflosse. Vorzugsweise verläuft die Einkerbung bis in den Kreuzungsbereich von Längs- und Quernaht. Damit ergibt sich am Ende der Längsnaht eine Aufreißlasche, die zum Öffnen der verpackung durch Ziehen an dieser Lasche entlang der Längsnahtlinie dient. Nachteilig stellt sich für den Verbraucher nach Abreißen der Längsnaht die Schwierigkeit beim Entnehmen des Inhalts dar, weil mit der Längsnaht nicht auch zugleich die Quernähte geöffnet sind und die Manipulation zum Herausnehmen des Inhalts daher umständlich ist. Auch ist in Richtung des vorgesehenen Aufrisses am Grund der Längsnahtflosse keine Schwächungslinie vorhanden, weshalb nur eine sehr reißwillige Folienbahn verwendet werden kann. Für Lebensmittel, welche in Folge begrenzter Haltbarkeitsgarantie nur kurze Zeit in der Verpackung verbleiben, mag dies zulässig sein, nicht jedoch für medizinisches Versorgungsgut wie Binden und Steifverbände, die fallweise für längere Zeit in der Verpackung verbleiben, darin transportiert, gestapelt, umgeschichtet oder verteilt werden und dafür eine äußerst haltbare Schlauchbeutelverpackung benötigen, die aber im Moment des Gebrauchs leicht, schnell und vollständig zu öffnen sein muß.A tubular bag packaging for pressure-sensitive goods, for example staggered cheese slices, is known from FR-A-2 190 684. A film web made of composite material of polyamide and polyethylene is used for packaging, this forming the inner layer and polyamide the outer layer. Adhesion or welding of edge areas of the film web is designed as a longitudinal sealing seam, while the ends are sealed by transverse seams. An incision in the ends of the longitudinal seam in the area of the inner angle of the seam fin serves as an opening aid. The notch preferably extends into the intersection of the longitudinal and transverse seams. This results in a tear tab at the end of the longitudinal seam, which is used to open the packaging by pulling this tab along the longitudinal seam line. A disadvantage for the consumer after the longitudinal seam has been torn off is the difficulty in removing the content because the longitudinal seam does not also open the transverse seams and the manipulation to remove the content is therefore cumbersome. There is also no line of weakness in the direction of the intended tear at the bottom of the longitudinal seam fin, which is why only a very tear-resistant film web can be used. This may be permissible for foodstuffs that only remain in the packaging for a short time as a result of a limited shelf life guarantee, but not for medical supplies such as bandages and cast bandages that may remain in the packaging for a longer period of time, transported, stacked, rearranged or distributed in them and therefore need an extremely durable tubular bag packaging, which, however, must be easy, quick and completely open at the moment of use.
Aus der DE - OS 36 18 765 ist eine Schlauchbeutelverpackung für tafel- oder riegelförmiges Gut, beispielsweise Schokoladenprodukte, bestehend aus einer folien- bzw. papierartigen Umhüllung mit zwei parallel zueinander verlaufenden durch Klebung oder Schweißung gebildeten Quernähten und einer senkrecht zu diesen Quernähten verlaufenden Längsnaht, die durch als Aufreißlasche vorstehende und ebenfalls durch Klebung oder Schweißung fest miteinander verbundene Stirnbänder gebildet, und durch Ziehen an der Aufreißlasche entlang dieser Nahtlinie zu öffnen ist, bekannt. Als Öffnungshilfe ist in einem Stirnband der Aufreißlasche im Bereich einer Quernaht eine die Längsnaht zumindest tangierende und zum seitlichen Rand offene Aussparung gebildet, und zwar handelt es sich dabei um eine durch Ausstanzen hergestellte etwa halbkreisförmige Kerbe. Von Nachteil bei dieser Schlauchbeutelverpackung ist die geringe Kerbwirkung und somit unzureichende Schwächung im Kreuzungsbereich von Quer- und Längsnaht, die beim Aufreißen der Verpackung nur eine begrenzte Öffnungshilfe ergibt.
Infolgedessen sind der Anwendbarkeit der vorgeschlagenen Öffnungshilfe einige Grenzen gesetzt und diese ist im wesentlichen nur für tafel- oder riegelförmiges Gut sowie bei Verwendung von reißfreudigem Folienmaterial für die Packung anwendbar.From DE - OS 36 18 765 is a tubular bag packaging for bar or bar-shaped goods, for example chocolate products, consisting of a film or paper-like wrapping with two parallel seams running parallel to one another by gluing or welding and a longitudinal seam running perpendicular to these transverse seams, the headbands protruding as a tear tab and also firmly connected to one another by gluing or welding, and which can be opened by pulling on the tear tab along this seam line, are known. As an opening aid, a cutout is formed in a headband of the tear-open flap in the region of a transverse seam and at least tangent to the longitudinal seam and open to the lateral edge, namely an approximately semicircular notch produced by punching out. The disadvantage of this tubular bag packaging is the low level Notch effect and thus inadequate weakening in the crossover area of the transverse and longitudinal seams, which only results in limited opening aid when the packaging is torn open.
As a result, there are some limits to the applicability of the proposed opening aid and this can essentially only be used for sheet-like or bar-shaped goods and when using tear-resistant film material for the pack.
Aus der CH 670 436 A5 ist eine Packung für Stückgüter bekannt, die eine Längsflossennaht und zwei Querflossennähte aufweist und mit einer Öffnungshilfe versehen ist. Diese Öffnungshilfe besteht aus zwei Verstärkungsstreifen, die sich mindestens im Bereich einer der Querflossennahte in einem Abstand befinden, wobei am Rande dieser Querflossennaht und innerhalb dieses Abstandes mindestens eine Einkerbung angeordnet ist. Als Packungsmaterial ist eine einschichtige Materialbahn verwendet, weshalb diese beim Öffnen durch Ziehen der Querflossenteile beiderseits der Einkerbung nach außen sehr leicht Querrisse bildet und dann den Inhalt nicht oder nur sehr unvollständig freigibt. Die Verstärkungsstreifen, z.B. Bänder aus Polyester oder Auftrag von Hotmelt-Stoff sollen verhindern, daß die Packung in ihrer ganzen Länge geöffnet wird, ohne daß ein Querriß entsteht. Die Öffnungshilfe wird demnach nicht durch eine Schwächung des Verpackungsmaterials verwirklicht, sondern im Gegenteil durch Verstärkungsstreifen neben der gedachten, ungeschwächten Reißlinie.A pack for piece goods is known from CH 670 436 A5, which has a longitudinal fin seam and two transverse fin seams and is provided with an opening aid. This opening aid consists of two reinforcement strips, which are located at a distance at least in the area of one of the transverse fin seams, at least one notch being arranged on the edge of this transverse fin seam and within this distance. A single-layer material web is used as the packing material, which is why it very easily forms transverse cracks when opening by pulling the transverse fin parts on both sides of the notch and then does not release the contents, or releases them only very incompletely. The reinforcement strips, e.g. Tapes made of polyester or the application of hot melt fabric are intended to prevent the entire length of the package from being opened without causing a transverse tear. The opening aid is therefore not realized by weakening the packaging material, but on the contrary by reinforcement strips next to the imaginary, un weakened tear line.
Aus der DE 28 58 166 C2 ist eine quaderförmige Innenumhüllung von Zigaretten aus dünnem Verpackungsmaterial, beispielsweise Staniol-Folie o. dgl. bekannt. Bei dieser ist das Verpackungsmaterial im Bereich einer Reißlinie örtlich mit einer Deckschicht aus reißfähigem Leimmaterial überdeckt, wobei sich an jedem Trennschnitt zusätzlich ein schräg und entgegengesetzt zur Reißrichtung gerichteter Einschnitt anschließt. Diese ganz speziell für eine Zigarettenpackung entwickelte Verpackungstechnik ist jedoch für eine Schlauchbeutelverpackung für medizinisches Versorgungsgut infolge der hierfür zu erwartenden Beanspruchungen beim Mitführen von Sanitätsmaterial in Sanitätstaschen, Rucksäcken, Autoapotheken oder dergleichen absolut ungeeignet. Abgesehen vom Fehlen der Deckschicht außerhalb der eigentlichen Reißlinien würden Umwelt- und Transporteinflüsse die Leimnähte verkleben und zerstören.DE 28 58 166 C2 discloses a parallelepiped-shaped inner wrapper for cigarettes made of thin packaging material, for example tinfoil or the like. In this case, the packaging material is locally covered in the area of a tear line with a covering layer of tearable glue material, with each separating cut in addition, an incision is made at an angle and opposite to the direction of tearing. However, this packaging technology, which was developed especially for a cigarette pack, is absolutely unsuitable for a tubular bag packaging for medical supplies due to the stress to be expected when carrying medical supplies in medical bags, backpacks, car pharmacies or the like. Apart from the absence of the cover layer outside the actual tear lines, environmental and transport influences would stick and destroy the glue seams.
Der Erfindung liegt die Aufgabe zugrunde, eine Schlauchbeutelverpackung der im Oberbegriff des Hauptanspruchs genannten Art anzugeben, welche geeignet ist, die vorgenannten Schwierigkeiten und technischen Grenzen zu überwinden, sich dabei insbesondere für eine sehr haltbare Verpackung von medizinischen Versorgungsgütern wie Binden oder Steifverbänden eignet, dabei ein gesteuertes Aufreißen des Schlauchbeutels in Längsrichtung von Quernaht zu Quernaht zur schnellen und vollständigen Öffnung und Zugänglichmachung des Packgutes ermöglicht sowie mit herkömmlichen maschinellen Verpackungs- und Versiegelungseinrichtungen bei hohen Abpackgeschwindigkeiten herstellbar ist.The invention has for its object to provide a tubular bag packaging of the type mentioned in the preamble of the main claim, which is suitable for overcoming the aforementioned difficulties and technical limits, is particularly suitable for a very durable packaging of medical supplies such as bandages or cast bandages Controlled tearing of the tubular bag in the longitudinal direction from cross seam to cross seam for quick and complete opening and making the packaged goods accessible and can be produced with conventional mechanical packaging and sealing devices at high packing speeds.
Die Lösung dieser Aufgabe gelingt bei einer Schlauchbeutelverpackung der eingangs genannten Art mit der Erfindung durch eine Ausbildung entsprechend dem Kennzeichen von Anspruch 1. Durch diese Ausbildung ergibt sich zwischen den Einschnitten der Quernähte eine über die Länge der Packung vertaufende Schwächungslinie, entlang deren ein gesteuerter Beutelaufriß etwa parallel zur Längsnaht problemlos ermöglicht wird. Die Schwächungslinie bildet gleichsam eine Sollbruchlinie, entlang welcher das Aufreißen im übertragenden Sinne wie bei einem Reißverschluß geordnet gesteuert ist, und dies trotz Verwendung einer vergleichsweise sehr reißfesten und zähen, mehrschichtigen Verbundfolie. Durch den vollständigen Längsaufriß wird der Schlauchbeutel etwa in einer längs verlaufenden Symmetrieebene in zwei Hätten geteilt, die dann zur unproblematischen Entnahme des Inhalts vom Aufriß zur Seite abgeklappt werden können, so daß der Inhalt, beispielsweise eine Binde, unverzüglich optimal zugänglich ist. Durch die Ausbildung der Einschnitte an den Quer-nähtenwird das Aufreißen ergonomisch optimal gelöst, weil diese Quernähte, die in Richtung ihres Verlaufes, also quer zur Verpackung, geriffelt ausgebildet sind, dem Zugriff von Hand bestens zugänglich sind. Infolgedessen wird die Verpackung schonend und vollständig geöffnet, ohne daß das empfindliche Packgut gequetscht oder beschädigt wird.This object is achieved in a tubular bag packaging of the type mentioned with the invention by a design according to the characterizing part of claim 1. This design results in a weakening line extending along the length of the pack between the incisions of the transverse seams, along which a controlled bag tear-off approximately parallel to the longitudinal seam is easily possible. The weakening line forms, as it were, a predetermined breaking line, along which the tearing is controlled in the figurative sense like a zipper, and this despite the use of a comparatively very tear-resistant and tough, multilayer composite film. Due to the complete longitudinal elevation, the tubular bag is divided roughly in a longitudinal plane of symmetry into two places, which can then be folded away from the elevation for easy removal of the content, so that the content, for example a bandage, is immediately optimally accessible. The formation of the incisions on the transverse seams optimally resolves the tearing open because these transverse seams, which are corrugated in the direction of their course, that is to say transversely to the packaging, are easily accessible by hand are. As a result, the packaging is opened gently and completely, without the sensitive packaged goods being crushed or damaged.
Fallweise kann auch von der Maßnahme Gebrauch gemacht sein, daß ausgehend von den Einschnitten, sowohl an der Oberseite der Schlauchbeutelverpackung als auch an der Unterseite der Schlauchbeutelverpackung je eine Schwächungslinie für das Aufreißen vorgesehen ist.Occasionally, use can also be made of the measure that, starting from the incisions, a line of weakness is provided for tearing open both on the top of the tubular bag packaging and on the underside of the tubular bag packaging.
Weitere zweckmäßige Ausgestaltungen des Erfindungsgegenstandes sind entsprechend den Merkmalen der Unteransprüche vorgesehen.Further expedient refinements of the subject matter of the invention are provided in accordance with the features of the subclaims.
Ein zweckmäßiges Verfahren zur Herstellung einer Folienbahn mit einem Verbund aus drei Schichten, wobei die Mittelschicht mit einer Aufreißhilfen aufweisenden Schwächungslinie ausgebildet ist, zeichnet sich dadurch aus, daß in die Mittelschicht während oder nach ihrer Herstellung entlang einer vorgesehenen Schwächungslinie eine Perforation oder unterbrochene Einschnitte oder eine thermische Versprödung eingearbeitet und danach die so vorbereitete Mittelschicht auf ihrer Oberseite mit der Deckschicht und auf ihrer Unterseite mit der Siegelschicht kaschiert wird.An expedient method for producing a film web with a composite of three layers, the middle layer being formed with a weakening line having tear-open aids, is characterized in that a perforation or interrupted incisions or an incision is made in the middle layer during or after its production along an intended weakening line thermal embrittlement and then the middle layer prepared in this way is laminated on its top with the top layer and on its underside with the sealing layer.
Eine nach diesem Verfahren hergestellte Folienbahn ist dadurch gekennzeichnet,daß diese zur Herstellung der erfindungsgemäßen Schlauchbeutelverpackung verwendet wird.A film web produced by this process is characterized in that it is used to produce the tubular bag packaging according to the invention.
Der Erfindungsgegenstand wird in schematischen Zeichnungen in einer bevorzugten Ausführungsform gezeigt, wobei aus der Erläuterung der Zeichnungen weitere vorteilhafte Einzelheiten der Erfindung entnehmbar sind. Die Zeichnungen zeigen im einzelnen:
- Fig. 1:
- Eine perspektivische Darstellung einer Schlauchbeutelverpackung mit keilförmigen Einschnitten der Quernähte und einer dazwischen verlaufenden, Aufreißhilfen aufweisenden Schwächungslinie;
- Fig. 2:
- Im Schnitt den mehrschichtigen Aufbau einer die Verpackung einschließenden Folienbahn mit vorgeschwächter Mittelschicht.
- Fig. 1:
- A perspective view of a tubular bag packaging with wedge-shaped incisions in the transverse seams and a weakening line running between them and having tear-open aids;
- Fig. 2:
- On average, the multi-layer structure of a film including the packaging with a weakened middle layer.
In der Figur 1 ist die Schlauchbeutelverpackung 10 dargestellt, die sich insbesondere zur langfristigen und sicheren sowie sterilen Aufbewahrung von empfindlichem, medizinischem Versorgungsgut wie Binden oder Steifverbänden eignet. Sie besteht aus einer sehr reißfesten, in mehreren Schichten im Verbund gebildeten, äußerst zähen Folienbahn (Fig. 2), die durch Klebung oder Schweißung ihrer entgegengesetzten Randbereiche in Form eines das Packgut umhüllenden Schlauches mit einer Längsnaht 6 und an den Enden durch zwei parallele Quernähte 1, 2 versiegelt ist. Erfindungsgemäß weist zumindest eine der Quernähte 1, vorzugsweise jedoch beide Quernähte 1, 2 je eine steuerbar vorgegebene Schwächung in Form eines keilförmigen Einschnittes 3, 3a auf. Jeder Einschnitt ist so ausgebildet, daß er die Quernaht 1 bzw. 2 nur in einem äußeren Teil ihrer Breite durchtrennt, ohne die hermetische Versiegelung der Schlauchbeutelverpackung zu gefährden, jedoch weit genug, um eine wirkungsvolle Öffnungshilfe durch Kerbwirkung zu gewährleisten. Ausgehend vom Bereich dieser Einschnitte 3, 3a verläuft über die Länge der Packung 10 eine Schwächungslinie 4, die für den Aufriß vorgesehen ist. Erfindungsgemäß ist diese so ausgebildet, daß in deren Verlauf wenigstens eine Schicht 12 (Fig. 2) des die Folienbahn 14 bildenden Verbundes Aufreißhilfen 5 wie Einschnitte, Perforierungen oder thermische Versprödung bzw. Einprägung aufweist. Dabei ist zumindest die Deckschicht 11 ungeschwächt. Vorzugsweise ist die die höchste Festigkeit aufweisende Schicht 12 mit Aufreißhilfen 5 ausgebildet.The
Beim gezeigten Ausführungsbeispiel besteht der mehrschichtige Verbund der Folienbahn 14 aus einer Deckschicht 11, vorzugsweise PE (Polyethylen) sowie einer äußerst zähen, festigkeitsbestimmenden Mittelschicht 12, vorzugsweise aus Polyamid, und einer inneren Schicht 13 eines Siegelmaterials, vorzugsweise einseitig verstrecktem LDPE, wobei die Mittelschicht 12 mit Aufreißhilfen 5 ausgebildet ist. Diese können, wie gesagt, aus einer Perforierung oder einer reißverschlußartigen Folge von kleinen Schnitten oder aus einer thermisch versprödeten Schwächungslinie oder aus einer Schwächungseinprägung bestehen.
Zusätzlich kann dabei von der Maßnahme Gebrauch gemacht sein, daß die Mittelschicht 12 in einer ersten Richtung mit einer vergleichsweise hohen Reißfestigkeit und in einer zweiten quer dazu orientierten Richtung mit einer vergleichsweise niedrigen Reißfestigkeit ausgebildet ist, und daß diese Mittelschicht 12 an der Verpackung mit einer solchen Orientierung ihrer inneren Struktur angeordnet ist, daß die Richtung der niedrigen Reißfestigkeit in Längsrichtung der Verpackung 10, d.h. in Richtung der Schwächungslinie 4, verläuft.In the exemplary embodiment shown, the multilayer composite of the
In addition, use can be made of the measure that the
Erfindungsgemäß könnte lediglich eine der beiden Quernähte 1 oder 2 mit einem Einschnitt 3 oder 3a versehen sein. Es erweist sich jedoch als äußerst zweckmäßig, daß beide Quernähte einen Einschnitt 3, 3a aufweisen und die Schwächungslinie 4, wie in der Figur 1 gezeigt, in der Verbindungslinie der beiden Einschnitte 3, 3a verläuft.According to the invention, only one of the two
Eine problemlose Herstellung der mehrschichtigen Folie, in deren Schichtverbund die beiden äußeren Schichten 11 und 13 ungeschwächt, dagegen die mittlere, von außen nicht sichtbare Schicht 12 mit einer Schwächungslinie ausgebildet ist, wird nach einer werteren Ausgestaltung der Erfindung vorteilhaft und mit wirtschaftlichen Mitteln dadurch hergestellt, daß in die Mittelschicht 12 während oder nach ihrer Herstellung entlang der vorgesehenen Schwächungslinie 4 mit bekannten maschinellen Einrichtungen eine Perforation oder eine unterbrochene Folge von Einschnitten oder eine Linie der thermischen Versprödung oder eine Schwächungseinprägung eingearbeitet und danach die so vorbereitete Mittelschicht 12 mit der Deckschicht 11 und der Siegelschicht 13 kaschiert wird. Und schließlich ist die nach diesem Verfahren hergestellte Folienbahn dadurch gekennzeichnet, daß sie zur Herstellung der erfindungsgemäßen Herstellung der Schlauchbeutelverpackung 10 verwendet wird.A problem-free production of the multilayer film, in the layer composite of which the two
Vorteilhaft ist ferner, daß die Schlauchbeutelverpackung nach der Erfindung ohne Zusatzaggregate auf jeder von der Auslegung dafür geeigneten Schlauchbeutelmaschine problemlos und mit großer Arbeitsgeschwindigkeit wirtschaftlich herstellbar ist.It is also advantageous that the tubular bag packaging according to the invention can be produced economically without problems and with a high operating speed on any tubular bag machine suitable for this purpose.
Damit stellt die Erfindung eine optimale Lösung der Eingangs gestellten Aufgabe dar.The invention thus represents an optimal solution to the problem set at the beginning.
- 1.1.
- QuernahtCross seam
- 2.2nd
- QuernahtCross seam
- 3.3rd
- Einschnittincision
- 4.4th
- SchwächungslinieWeakening line
- 5.5.
- AufreißhilfeTear aid
- 6.6.
- LängsnahtLongitudinal seam
- 7.7.
- 8.8th.
- 9.9.
- 10.10th
- Verpackungpackaging
- 11.11.
- DeckschichtTop layer
- 12.12th
- MittelschichtMiddle class
- 13.13.
- SiegelschichtSealing layer
- 14.14.
- FolienbahnFoil web
Claims (4)
- Tubular bag packaging, for medicinal supply articles, such as bandages or rigid dressings, in particular, consisting of a tough film web (14) made up of several layers (11 to 13) in a composite construction, whose opposite borders are glued or welded together along a longitudinal seam (6) to form a tube (10) enveloping the material to be packed, and which is sealed at its ends by means of two parallel transverse seams (1,2), and which exhibits an aid to opening (4), enabling it to be torn open quickly and completely in order to remove the contents, whereby at least one of the transverse seams (1,2) exhibits a controllable, given weakening in the form of an incision (3 and 3a, respectively), which divide the transverse seam (1 and 2, respectively) only in an exterior part of its width, whereby a weakening line (4) emanating from the area of this incision (3 and 3a, respectively) and running across the length of the packaging (10) is provided for the tear,
characterized in that
the multilayered composite construction of the film web (14) consists of a cover layer (11), preferably of polyethylene, a very tough, middle layer (12) determining the toughness, preferably made of polyamide, and an inner layer (13) of a sealing material, preferably of unidirectionally drawn LDPE, and that the middle layer (12) exhibiting the greatest toughness is equipped with the weakening line (4), which is provided with incisions, perforation, thermal brittleness or an impression as aids to tearing (5), and the cover layer (11) at least is not weakened. - Packaging according to Claim 1, characterised in that the middle layer (12) is formed in one, first direction with a comparatively high ultimate tensile strength and in a second direction, orientated crosswise to the former, with a comparatively low ultimate tensile strength, and that the orientation of the middle layer (12) on the packaging (10) is such that the direction of the low ultimate tensile strength runs lengthwise in the packaging (10).
- Process for the production of a film web with a composite construction consisting of three layers (11,12,13), the middle layer (12) being formed with a line of weakening featuring aids to tearing (5), characterised in that a perforation or intermittent incisions or thermal brittleness or an impression is/are worked into the middle layer (12) along a given line of weakening (4) during or after its production, and after that the middle layer (12) which has been prepared in this manner is laminated on its upper surface with a cover layer (11) and on its lower surface with a sealing layer (13).
- A film web (14) produced in accordance with the process according to Claim 3, characterised in that this is used for the production of the tubular bag packaging (10) formed according to claim 1 or 2.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4109605A DE4109605A1 (en) | 1991-03-23 | 1991-03-23 | TUBE PACKAGING |
| DE4109605 | 1991-03-23 | ||
| PCT/EP1992/000397 WO1992016431A1 (en) | 1991-03-23 | 1992-02-26 | Tubular sachet package |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0577615A1 EP0577615A1 (en) | 1994-01-12 |
| EP0577615B1 true EP0577615B1 (en) | 1995-01-04 |
Family
ID=6428056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92905128A Expired - Lifetime EP0577615B1 (en) | 1991-03-23 | 1992-02-26 | Tubular sachet package |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5445454A (en) |
| EP (1) | EP0577615B1 (en) |
| JP (1) | JPH06505948A (en) |
| AT (1) | ATE116619T1 (en) |
| CA (1) | CA2104944A1 (en) |
| DE (2) | DE4109605A1 (en) |
| DK (1) | DK0577615T3 (en) |
| ES (1) | ES2069418T3 (en) |
| GR (1) | GR3015517T3 (en) |
| IE (1) | IE920901A1 (en) |
| WO (1) | WO1992016431A1 (en) |
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| US5660479A (en) * | 1996-02-16 | 1997-08-26 | Reynolds Consumer Products Inc. | Easy open package header |
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| US6036679A (en) * | 1998-04-09 | 2000-03-14 | Kimberly-Clark Worldwide, Inc. | Individually wrapped absorbent article |
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| US8783950B2 (en) * | 2008-02-07 | 2014-07-22 | Packs Co., Ltd. | Packaging body and film made of resin used therefor |
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| US8794836B2 (en) | 2011-10-12 | 2014-08-05 | Cryovac, Inc. | Easy-open heat-shrinkable packaging article and package made therefrom |
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-
1991
- 1991-03-23 DE DE4109605A patent/DE4109605A1/en not_active Withdrawn
-
1992
- 1992-02-26 AT AT92905128T patent/ATE116619T1/en not_active IP Right Cessation
- 1992-02-26 ES ES92905128T patent/ES2069418T3/en not_active Expired - Lifetime
- 1992-02-26 JP JP4504928A patent/JPH06505948A/en active Pending
- 1992-02-26 DE DE59201154T patent/DE59201154D1/en not_active Expired - Fee Related
- 1992-02-26 US US08/122,434 patent/US5445454A/en not_active Expired - Fee Related
- 1992-02-26 DK DK92905128.2T patent/DK0577615T3/en active
- 1992-02-26 CA CA002104944A patent/CA2104944A1/en not_active Abandoned
- 1992-02-26 EP EP92905128A patent/EP0577615B1/en not_active Expired - Lifetime
- 1992-02-26 WO PCT/EP1992/000397 patent/WO1992016431A1/en active IP Right Grant
- 1992-03-20 IE IE090192A patent/IE920901A1/en not_active Application Discontinuation
-
1995
- 1995-03-22 GR GR950400650T patent/GR3015517T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES2069418T3 (en) | 1995-05-01 |
| DE59201154D1 (en) | 1995-02-16 |
| JPH06505948A (en) | 1994-07-07 |
| EP0577615A1 (en) | 1994-01-12 |
| CA2104944A1 (en) | 1992-09-24 |
| GR3015517T3 (en) | 1995-06-30 |
| DK0577615T3 (en) | 1995-06-26 |
| DE4109605A1 (en) | 1992-09-24 |
| WO1992016431A1 (en) | 1992-10-01 |
| ATE116619T1 (en) | 1995-01-15 |
| US5445454A (en) | 1995-08-29 |
| IE920901A1 (en) | 1992-09-23 |
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