EP0577615A1 - Tubular sachet package. - Google Patents

Tubular sachet package.

Info

Publication number
EP0577615A1
EP0577615A1 EP92905128A EP92905128A EP0577615A1 EP 0577615 A1 EP0577615 A1 EP 0577615A1 EP 92905128 A EP92905128 A EP 92905128A EP 92905128 A EP92905128 A EP 92905128A EP 0577615 A1 EP0577615 A1 EP 0577615A1
Authority
EP
European Patent Office
Prior art keywords
layer
tear
packaging
middle layer
incisions
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.)
Granted
Application number
EP92905128A
Other languages
German (de)
French (fr)
Other versions
EP0577615B1 (en
Inventor
Gerald Barkhorn
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.)
Lohmann GmbH and Co KG
Original Assignee
Lohmann GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lohmann GmbH and Co KG filed Critical Lohmann GmbH and Co KG
Publication of EP0577615A1 publication Critical patent/EP0577615A1/en
Application granted granted Critical
Publication of EP0577615B1 publication Critical patent/EP0577615B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • 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
    • 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 stiff 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 at the ends is sealed by two parallel transverse seams and has at least one opening aid for quick and complete tearing open in order to remove the contents.
  • 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 longitudinally running sealing seam, while the ends are tightly closed 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-open tab at the end of the longitudinal seam, which is used to open the packaging by pulling on 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 the limited shelf life guarantee, but not for medical supplies such as bandages or cast bandages that may remain in the packaging for a longer period of time, transported, stacked, layered or be distributed and need an extremely durable hose bag packaging, which must be easy, quick and completely open at the moment of use.
  • DE - OS 3 ⁇ 18 765 describes a tubular bag packaging for bar-shaped or bar-shaped goods, for example chocolate products, consisting of a film-like or paper-like covering with two transverse seams running parallel to one another and formed by gluing or welding and one perpendicular to these transverse seams Longitudinal seam, which is formed by front edges protruding as a tear-open tab and also firmly connected by gluing or welding, and by pulling is known to open at the tear-open ash along this seam line.
  • a recess at least tangent to the longitudinal seam and open to the lateral edge is formed in an end edge of the tear-open ash in the area of a transverse seam, namely an approximately semicircular notch produced by punching out.
  • a disadvantage of this hose bag packaging is the low notch effect and therefore insufficient weakening in the crossover area of the transverse and longitudinal seams, which results in only a 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 table or bar-shaped goods and when using tear-resistant film material for the pack.
  • the invention has for its object to provide a hosiery 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 rigid 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 at the outset with the invention by a design according to the characterizing part of claim 1.
  • This design results in a line of weakness running 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 transferring sense, as in the case of 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 approximately divided into two halves in a longitudinal plane of symmetry, which can then be folded away from the elevation to the problem-free 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.
  • 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.
  • 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. 1 shows the tubular bag packaging 10, 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 areas 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.
  • Fig. 2 very tear-resistant, extremely tough film web
  • 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 hose bag packaging, but far enough to ensure effective opening aid by means of a notch effect.
  • 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 resistance in a first direction and with a comparatively low tear resistance in a second direction oriented transversely thereto. and that this middle layer 12 is arranged on the package with such an orientation of its internal structure that the direction of low tear strength is in the longitudinal direction of the package 10, ie in the direction of the line of weakness 4.
  • only one of the two transverse seams 1 or 2 could be provided with an incision 3 or 3a.
  • 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 not visible from the outside, is formed with a weakening line, is advantageously produced according to a further embodiment of the invention and is produced economically. 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 with known mechanical devices and then the middle layer 12 thus prepared with the top layer 11 and the sealing layer 13 is laminated. And finally, the film web produced by this method is characterized in that it is used to produce the tubular bag packaging 10 according to the invention.
  • tubular bag packaging according to the invention can be produced economically and with great working speed without problems and on any tubular bag machine suitable for this purpose.
  • the invention represents an optimal solution to the task set.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Tubes (AREA)
  • Wrappers (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Abstract

PCT No. PCT/EP92/00397 Sec. 371 Date Oct. 21, 1993 Sec. 102(e) Date Oct. 21, 1993 PCT Filed Feb. 26, 1992 PCT Pub. No. WO92/16431 PCT Pub. Date Oct. 1, 1992.Tubular bag packaging, for medicinal supply articles such as bandages or rigid dressings, in particular, consisting of a tough film web made up of several layers in a composite structure whose opposite borders are glued or welded together along a longitudinal seam to form a tube enveloping the material to be packed and which is sealed at its ends by means of two parallel transverse seams and which exhibits at least one aid to opening, 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 controllable, given weakening in the form of an incision (3), which only divides the transverse seam (1) and (2), respectively, in an outer part of its width, and that a line of weakening (4) running across the length of the packaging (10) is intended for the tear, during the course of which at least one layer (12) of the composite structure making up the film (14) is provided with aids to tearing (5) such as incisions, perforations or thermal brittleness and impression and at least the cover layer (11) is unweakened.

Description

Schlαuchbeutelverpαckung Tube bag packaging
Die Erfindung betrifft eine Schlαuchbeutelverpαckung, 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 zumindest eine Öffnungshilfe zum schnellen und vollständigen Aufreißen zwecks Entnahme des Inhalts aufweist.The invention relates to a tubular bag packaging, in particular for medical supplies such as bandages or stiff 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 at the ends is sealed by two parallel transverse seams and has at least one opening aid for quick and complete tearing open in order to remove the contents.
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 längsveiiaufende 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 Ver¬ sorgungsgut wie Binden oder Steifverbände, die fallweise für längere Zeit in der Verpackung verbleiben, darin transportiert, gestapelt, umgeschichtet oder verteilt werden und dafür eine äußerst haltbare Schlauchbeuteiverpackung 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 longitudinally running sealing seam, while the ends are tightly closed 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-open tab at the end of the longitudinal seam, which is used to open the packaging by pulling on 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 the limited shelf life guarantee, but not for medical supplies such as bandages or cast bandages that may remain in the packaging for a longer period of time, transported, stacked, layered or be distributed and need an extremely durable hose bag packaging, which must be easy, quick and completely open at the moment of use.
Aus der DE - OS 3ό 18 765 ist eine Schlauchbeuteiverpackung für tafel- oder riegeiförmiges Gut, beispielsweise Schokoladeprodukte, bestehend aus einer folien- bzw. papierartigen Umhüllung mit zwei parallel zueinander verlaufenden durch Klebung oder Schweißung gebildeten Quernähten und einer senkrecht zu diesen Quernähten verlau¬ fenden Längsnaht, die durch als Aufreißlasche vorstehende und ebenfalls durch Klebung oder Schweißung fest miteinander verbundene Stirnränder gebildet, und durch Ziehen an der Aufreißiasche entlang dieser Nahtlinie zu öffnen ist, bekannt. Als Öffnungshilfe ist in einem Stirnrand der Aufreißiasche 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 Schlauchbeuteiverpackung 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 riegeiförmiges Gut sowie bei Verwendung von reißfreudigem Folienmaterial für die Packung anwendbar.DE - OS 3ό 18 765 describes a tubular bag packaging for bar-shaped or bar-shaped goods, for example chocolate products, consisting of a film-like or paper-like covering with two transverse seams running parallel to one another and formed by gluing or welding and one perpendicular to these transverse seams Longitudinal seam, which is formed by front edges protruding as a tear-open tab and also firmly connected by gluing or welding, and by pulling is known to open at the tear-open ash along this seam line. As an opening aid, a recess at least tangent to the longitudinal seam and open to the lateral edge is formed in an end edge of the tear-open ash in the area of a transverse seam, namely an approximately semicircular notch produced by punching out. A disadvantage of this hose bag packaging is the low notch effect and therefore insufficient weakening in the crossover area of the transverse and longitudinal seams, which results in only a 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 table or bar-shaped goods and when using tear-resistant film material for the pack.
Der Erfindung liegt die Aufgabe zugrunde, eine Schlauchbeuteiverpackung 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 Zugängiichmachung des Packgutes ermöglicht sowie mit herkömmlichen maschinellen Verpackungs- und Versiegelungseinrichtungen bei hohen Abpackgeschwindigkeiten herstellbar ist.The invention has for its object to provide a hosiery 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 rigid 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 Schlauchbeuteiverpackung 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 verlaufende 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, mehr¬ schichtigen Verbundfolie. Durch den vollständigen Längsaufriß wird der Schlauchbeutel etwa in einer längs verlaufenden Symmetrieebene in zwei Hälften 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 at the outset with the invention by a design according to the characterizing part of claim 1. This design results in a line of weakness running 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 transferring sense, as in the case of 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 approximately divided into two halves in a longitudinal plane of symmetry, which can then be folded away from the elevation to the problem-free 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 Schlauchbeuteiverpackung als auch an der Unterseite der Schlauchbeuteiverpackung 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 upper side of the tubular bag packaging and on the lower side 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 Schlauchbeuteiverpackung 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 vor¬ teilhafte Einzelheiten der Erfindung entnehmbar sind. Die Zeichnungen zeigen im einzelnen :The subject matter of the invention is shown in schematic drawings in a preferred embodiment, further advantageous details of the invention being apparent from the explanation of the drawings. The drawings show in detail:
Fig. 1 : Eine perspektivische Darstellung einer Schlauchbeuteiverpackung mit keilförmigen Einschnitten der Quernähte und einer dazwischen verlaufenden, Aufreißhilfen aufweisenden Schwächungslinie;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: Im Schnitt den mehrschichtigen Aufbau einer die Verpackung einschließenden Folienbahn mit vorgeschwächter Mittelschicht. In der Figur 1 ist die Schlαuchbeutelverpαckung 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 Schlauchbeuteiverpackung 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 Schwächungsiinie 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.Fig. 2: On average, the multilayer structure of a film web including the packaging with a weakened middle layer. FIG. 1 shows the tubular bag packaging 10, 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 areas 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 hose bag packaging, but far enough to ensure effective opening aid by means of a notch effect. Starting from the area of these incisions 3, 3a, a weakening line 4 extends over the length of the pack 10 and is intended for the tear. According to the invention, 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.
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 Schwächungsiinie oder aus einer Schwächungseinprägung bestehen.In the exemplary embodiment shown, 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. As mentioned, 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.
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. 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 verläuf .In addition, use can be made of the measure that the middle layer 12 is designed with a comparatively high tear resistance in a first direction and with a comparatively low tear resistance in a second direction oriented transversely thereto. and that this middle layer 12 is arranged on the package with such an orientation of its internal structure that the direction of low tear strength is in the longitudinal direction of the package 10, ie in the direction of the line of weakness 4. According to the invention, only one of the two transverse seams 1 or 2 could be provided with an incision 3 or 3a. However, it proves to be extremely expedient that 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.
Eine problemlose Herstellung der mehrschichtigen Folie, in deren Schichtverbund die beiden äußeren Schichten 11 und 13 ungeschwάcht, dagegen die mittlere, von außen nicht sichtbare Schicht 12 mit einer Schwächungslinie ausgebildet ist, wird nach einer weiteren 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 1 1 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 Schlauchbeuteiverpackung 10 verwendet wird.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 not visible from the outside, is formed with a weakening line, is advantageously produced according to a further embodiment of the invention and is produced economically. 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 with known mechanical devices and then the middle layer 12 thus prepared with the top layer 11 and the sealing layer 13 is laminated. And finally, the film web produced by this method is characterized in that it is used to produce the tubular bag packaging 10 according to the invention.
Vorteilhaft ist ferner, daß die Schlauchbeuteiverpackung nach der Erfindung ohne Zusatzaggregate auf jeder von der Auslegung dafür geeigneten Schlauchbeutel¬ maschine 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 and with great working speed without problems and on any tubular bag machine suitable for this purpose.
Damit stellt die Erfindung eine optimale Lösung der Eingangs gestellten Aufgabe dar. Thus, the invention represents an optimal solution to the task set.
Liste der BezugszeichenList of reference numbers
1. Quernαht1. Crossover
2. Quernαht2. Cross
3. Einschnitt3rd incision
4. Schwächungslinie4th line of weakness
5. Aufreißhilfe5. Tear open aid
ό. Längsnahtό. Longitudinal seam
7.7.
8.8th.
9.9th
10. Verpackung10. Packaging
11. Deckschicht11. Top layer
12. Mittelschicht12. Middle class
13. Siegelschicht13. Sealing layer
14. Folienbahn 14. Foil sheet

Claims

P A T E N T A N S P R Ü C H E PATENT CLAIMS
1. Schlαuchbeutelverpαckung, insbesondere für medizinisches Versorgungsgut wie Binden oder Steifverbände, bestehend aus einer in mehreren Schichten im Verbund gebildeten, zähen Foiienbahn, 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 zumindest eine Öffnungshilfe zum schnellen und vollständigen Aufreißen zwecks Entnahme des Inhalts aufweist, dadurch gekennzeichnet, daß zumindest eine der Quernähte (1 , 2) eine steuerbar vorgegebene Schwächung in Form eines Einschnitts (3) aufweist, welcher die Quernaht (1) bzw. (2) nur in einem äußeren Teil ihrer Breite durchtrennt, und daß ausgehend vom Bereich dieses Einschnitts (3) eine über die Länge der Packung (10) verlaufende Schwächungslinie (4) für den Aufriß vorgesehen ist, in deren Verlauf wenigstens eine Schicht (12) des die Folie (14) bildenden Verbundes mit Aufreißhilfen (5) wie Einschnitte, Perforierung oder thermische Versprödung, Einprägung ausgebildet und zumindest die Deckschicht (1 1) unge¬ schwächt ist.1. Schläuchbeutelverpαckung, in particular for medical supplies such as bandages or cast bandages, consisting of a tough film web formed in several layers in the composite, which by gluing or welding their opposite edge areas in the form of a tube enveloping the packaged goods with a longitudinal seam and at the ends by two parallel transverse seams are sealed and have at least one opening aid for quick and complete tearing open in order to remove the contents, characterized in that at least one of the transverse seams (1, 2) has a controllable predetermined weakening in the form of an incision (3) which cuts the transverse seam ( 1) or (2) only in an outer part of their width, and that starting from the area of this incision (3) a line of weakness (4) extending over the length of the pack (10) is provided for the tear, in the course of which at least a layer (12) of the film (14) forming Ve Round with tear aids (5) such as incisions, perforations or thermal embrittlement, embossing and at least the cover layer (11) is not weakened.
2. Verpackung nach Anspruch 1 , dadurch gekennzeichnet, daß die die höchste Festigkeit aufweisende Schicht(12) mit Aufreißhilfen (5) ausgebildet ist.2. Packaging according to claim 1, characterized in that the layer having the highest strength (12) is designed with tear-open aids (5).
3. Verpackung nach Anspruch 1 , dadurch gekennzeichnet, daß der mehrschichtige Verbund der Folienbahn (14) aus einer Deckschicht (1 1), vorzugsweise Polyethylen, einer hochzähen, festigkeitsbestimmenden Mittelschicht (12), vorzugsweise Polyamid, und einer inneren Schicht (13) eines Siegelmaterials, vorzugsweise einseitig verstrecktem LDPE besteht, und daß die Mittelschicht (12) mit Aufreißhilfen (5) ausgebildet ist.3. Packaging according to claim 1, characterized in that the multilayer composite of the film web (14) from a cover layer (1 1), preferably polyethylene, a tough, strength-determining middle layer (12), preferably polyamide, and an inner layer (13) of one Sealing material, preferably LDPE stretched on one side, and that the middle layer (12) is formed with tear aids (5).
4. Verpackung nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, 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 die Mittelschicht (12) an der Verpackung (10) mit einer solchen Orientierung angeordnet ist. $ daß die Richtung der niedrigen Reißfestigkeit in Längsrichtung der Verpackung (10) verläuft.4. Packaging according to one or more of claims 1 to 3, characterized in that the middle layer (12) is formed in a first direction with a comparatively high tear strength, and in a second, transversely oriented direction with a comparatively low tear strength, and that the middle layer (12) is arranged on the packaging (10) with such an orientation. $ that the direction of low tear strength is in the longitudinal direction of the package (10).
5. Verpackung nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß beide Quemähte (1-2) Einschnitte (3,3a) aufweisen, und daß die Schwächungslinie (4) in einer Verbindungslinie der beiden Einschnitte (3,3a) verläuft.5. Packaging according to one or more of claims 1 to 4, characterized in that both transverse seams (1-2) have incisions (3,3a), and that the line of weakness (4) in a connecting line of the two incisions (3,3a) runs.
6. Verfahren zur Herstellung einer Folienbahn mit einem aus drei Schichten (11,12,13) bestehenden Verbund, wobei die Mittelschicht (12) mit einer Auf reißhilf en (5) aufweisenden Schwächungsiinie (4) ausgebildet ist, dadurch gekennzeichnet, daß in die Mittelschicht (12) während oder nach ihrer Herstellung entlang einer vorgesehenen Schwächungsiinie (4) eine Perforation oder unterbrochene Einschnitte oder eine thermische Versprödung oder eine Einprägung eingearbeitet und danach die so vorbereitete Mittelschicht (12) an ihrer Oberseite mit einer Deckschicht (11) und an ihrer Unterseite mit einer Siegeischicht (13) kaschiert wird.6. A process for producing a film web with a three-layer composite (11, 12, 13), the middle layer (12) being formed with a weakening line (4) having tear-off aids (5), characterized in that the Middle layer (12) during or after its production along a planned weakening line (4), a perforation or interrupted incisions or thermal embrittlement or embossing and then the middle layer (12) thus prepared on its upper side with a cover layer (11) and on it Underside with a Siegei layer (13) is laminated.
7. Nach dem Verfahren gemäß Anspruch 6 hergestellte Foiienbahn (14). dadurch gekennzeichnet, daß diese zur Herstellung der erfindungsgemäßen Schlauchbeuteiverpackung (10) verwendet wird. 7. Foil web (14) produced by the method according to claim 6. characterized in that it is used to manufacture the tubular bag packaging (10) according to the invention.
EP92905128A 1991-03-23 1992-02-26 Tubular sachet package Expired - Lifetime EP0577615B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4109605 1991-03-23
DE4109605A DE4109605A1 (en) 1991-03-23 1991-03-23 TUBE PACKAGING
PCT/EP1992/000397 WO1992016431A1 (en) 1991-03-23 1992-02-26 Tubular sachet package

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EP0577615A1 true EP0577615A1 (en) 1994-01-12
EP0577615B1 EP0577615B1 (en) 1995-01-04

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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)
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WO (1) WO1992016431A1 (en)

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US5445454A (en) 1995-08-29
DE59201154D1 (en) 1995-02-16
WO1992016431A1 (en) 1992-10-01
ATE116619T1 (en) 1995-01-15
CA2104944A1 (en) 1992-09-24
ES2069418T3 (en) 1995-05-01
JPH06505948A (en) 1994-07-07
EP0577615B1 (en) 1995-01-04
DK0577615T3 (en) 1995-06-26
IE920901A1 (en) 1992-09-23

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