EP0577615B1 - Emballage en forme de sachet tubulaire - Google Patents

Emballage en forme de sachet tubulaire Download PDF

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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
Authority
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
Application number
EP92905128A
Other languages
German (de)
English (en)
Other versions
EP0577615A1 (fr
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/fr
Application granted granted Critical
Publication of EP0577615B1 publication Critical patent/EP0577615B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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 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.

Landscapes

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

Claims (4)

  1. Sac-manchon d'emballage, en particulier pour produit de soins médicaux, comme des bandages ou des bandes pour attelles, constitué d'une feuille (14) résistante réalisée comme composite de plusieurs couches (11 à 13) qui, par collage ou soudage de ses régions de bordure opposées, est configurée sous la forme d'un manchon (10) à cordon longitudinal (6) entourant le produit emballé, et qui est scellée aux extrémités par deux cordons transversaux (1, 2) parallèles, et qui présente un accessoire d'ouverture (5) pour une déchirure rapide et complète en vue de la reprise du contenu, tandis qu'au moins un des cordons transversaux (1, 2) présente un affaiblissement prédéterminé réglable sous la forme d'une découpe (3 ou 3a) qui ne traverse le cordon transversal (1 ou 2) que dans la partie extérieure de la largeur de celui-ci, et qu'une ligne d'affaiblissement (4) partant de la région de cette découpe (3 ou 3a) et s'étendant sur la longueur de l'emballage (10) est prévue pour la déchirure, caractérisé en ce que le composite en plusieurs couches de la feuille (14) est constitué d'une couche de recouvrement (11), de préférence en polyéthylène, d'une couche médiane (12), très tenace et déterminant la résistance, de préférence en polyamide, et d'une couche intérieure (13) d'un matériau de scellage, de préférence du LDPE (polyéthylène basse densité) étiré unilatéralement, et en ce que la couche médiane (12), qui offre la plus grande résistance, présente la ligne d'affaiblissement (4) dans le trajet de laquelle sont pratiquées des découpes, des perforations ou un affaiblissement thermique ou un écrasement d'affaiblissement servant d'accessoires de déchirure (5), et en ce qu'au moins la couche de recouvrement (11) est non affaiblie.
  2. Emballage selon la revendication 1, caractérisé en ce que la couche médiane (12) est réalisée avec une résistance à la déchirure relativement élevée dans une première direction et une résistance à la déchirure relativement faible dans une seconde direction orientée transversalement par rapport à la première, et en ce que la couche médiane (12) est disposée sur l'emballage (10) dans une orientation telle que la direction de la plus petite résistance à la déchirure s'étend suivant la direction longitudinale de l'emballage (10).
  3. Procédé de fabrication d'une feuille avec un composite constitué de trois couches (11, 12, 13), la couche médiane (12) étant réalisée avec une ligne d'affaiblissement (4) présentant des accessoires de déchirure (5), caractérisé en ce que pendant ou après la fabrication de la couche médiane (12), une perforation ou une découpe interrompue ou un affaiblissement thermique ou un écrasement d'affaiblissement sont pratiqués dans la couche médiane (12), le long d'une ligne d'affaiblissement (4) prévue, et ensuite la couche médiane (12) ainsi préparée est masquée sur sa face supérieure par une couche de recouvrement (11) et sur sa face inférieure par une couche de scellage (13).
  4. Feuille (14) fabriquée selon le procédé de la revendication 3, caractérisée en ce qu'elle est utilisée pour la fabrication du sac-manchon d'emballage (10) réalisé selon la revendication 1 ou 2.
EP92905128A 1991-03-23 1992-02-26 Emballage en forme de sachet tubulaire Expired - Lifetime EP0577615B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4109605A DE4109605A1 (de) 1991-03-23 1991-03-23 Schlauchbeutelverpackung
DE4109605 1991-03-23
PCT/EP1992/000397 WO1992016431A1 (fr) 1991-03-23 1992-02-26 Emballage en forme de sachet tubulaire

Publications (2)

Publication Number Publication Date
EP0577615A1 EP0577615A1 (fr) 1994-01-12
EP0577615B1 true EP0577615B1 (fr) 1995-01-04

Family

ID=6428056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92905128A Expired - Lifetime EP0577615B1 (fr) 1991-03-23 1992-02-26 Emballage en forme de sachet tubulaire

Country Status (11)

Country Link
US (1) US5445454A (fr)
EP (1) EP0577615B1 (fr)
JP (1) JPH06505948A (fr)
AT (1) ATE116619T1 (fr)
CA (1) CA2104944A1 (fr)
DE (2) DE4109605A1 (fr)
DK (1) DK0577615T3 (fr)
ES (1) ES2069418T3 (fr)
GR (1) GR3015517T3 (fr)
IE (1) IE920901A1 (fr)
WO (1) WO1992016431A1 (fr)

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JP2737780B2 (ja) * 1987-08-24 1998-04-08 ソニー株式会社 Ｍｏｓトランジスタ
CH670436A5 (en) * 1988-02-01 1989-06-15 Sig Schweiz Industrieges Chocolate bar packing with sealed ends - has groove each end for tearing wrapper open between two reinforcing strips parallel to longitudinal seal
DE3809518A1 (de) * 1988-03-22 1989-10-12 Unilever Nv Folienverpackung
DE8903199U1 (de) * 1989-03-15 1989-05-03 Rovema - Verpackungsmaschinen Gmbh, 35463 Fernwald Standfähiger Beutel aus flexiblem Packmaterial
JP2938518B2 (ja) * 1990-06-11 1999-08-23 岡田紙業株式会社 調理済食品の再加熱用収納体およびそれを用いた調理方法
US5110677A (en) * 1990-10-01 1992-05-05 W. R. Grace & Co.-Conn. Lettuce packaging film

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IE920901A1 (en) 1992-09-23
US5445454A (en) 1995-08-29
CA2104944A1 (fr) 1992-09-24
ATE116619T1 (de) 1995-01-15
ES2069418T3 (es) 1995-05-01
JPH06505948A (ja) 1994-07-07
DE59201154D1 (de) 1995-02-16
GR3015517T3 (en) 1995-06-30
DE4109605A1 (de) 1992-09-24
WO1992016431A1 (fr) 1992-10-01
EP0577615A1 (fr) 1994-01-12
DK0577615T3 (da) 1995-06-26

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