EP1458627B1 - Verpackung, wie zum beispiel beutel, mit ausgerichteter aufreissöffnung - Google Patents

Verpackung, wie zum beispiel beutel, mit ausgerichteter aufreissöffnung Download PDF

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Publication number
EP1458627B1
EP1458627B1 EP02801072A EP02801072A EP1458627B1 EP 1458627 B1 EP1458627 B1 EP 1458627B1 EP 02801072 A EP02801072 A EP 02801072A EP 02801072 A EP02801072 A EP 02801072A EP 1458627 B1 EP1458627 B1 EP 1458627B1
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EP
European Patent Office
Prior art keywords
stiffening element
packaging
forming
tear
strip
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
EP02801072A
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English (en)
French (fr)
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EP1458627A2 (de
Inventor
Jean-Claude Jammet
Stéphane MATHIEU
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.)
Amcor Flexibles Food France SAS
Original Assignee
Alcan Packaging Food France SAS
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Filing date
Publication date
Application filed by Alcan Packaging Food France SAS filed Critical Alcan Packaging Food France SAS
Publication of EP1458627A2 publication Critical patent/EP1458627A2/de
Application granted granted Critical
Publication of EP1458627B1 publication Critical patent/EP1458627B1/de
Anticipated expiration legal-status Critical
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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
    • B65D75/5805—Opening or contents-removing devices added or incorporated during package manufacture for tearing a side strip parallel and next to the edge, e.g. by means of a line of weakness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2516—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener
    • B65D33/2533—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener the slide fastener being located between the product compartment and the tamper indicating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B70/20—Cutting sheets or blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • 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
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • 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
    • B65D75/66—Inserted or applied tearing-strings or like flexible elements
    • B65D75/68—Inserted or applied tearing-strings or like flexible elements extending through wrapper closure or between wrapper layers

Definitions

  • the invention relates to the field of flexible packaging, typically bags. These pouches are formed from monolayer or multilayer web materials, comprising all or part of plastic films. It relates more particularly to the opening of the bags, in the case where the opening comprises the tearing of the strip material forming the bag, the strip material constituting the bag being selected from manually tearable materials.
  • Tircell In the case of easily tearable materials, there is also known an opening means commonly referred to as "Tircell” ® typically consisting of a strip with mechanical characteristics greater than those of the material to tear, fixed to the material to be ripped, and comprising a free end for manually pulling on the strip and thus tearing said material.
  • pre-incision techniques tending to weaken locally a material, for example by laser, so as to facilitate the opening or tearing of a plastic film.
  • WO-A-0 132 521 discloses a sachet comprising two side walls, a bottom and a filling opening, able to be closed after packaging the product in said package, said bag being formed from a strip-like material manually, each side wall including tear-guiding means at the first opening, said guiding means being made either by using strip material oriented in the tear direction, or by using the pre-incision technique tending to locally weakening the strip material, either by attaching a strip with mechanical characteristics greater than that of the strip material to the inner or outer surface of the web material forming the bag.
  • pre-incised lines they are known on the one hand to require expensive equipment, on the other hand, to be of delicate implementation insofar as a high accuracy and regularity of the depth of incision is required, and finally, to mechanically weaken the material possibly to a large width, which may be detrimental to maintaining the integrity of the package throughout its lifetime.
  • the applicant has therefore sought a more efficient, reliable and high productivity industrial, to solve the problems posed by the state of the art, and in particular by the use of the laser.
  • the present invention relates to a package of a product in the form of a bag which is defined in claim 1.
  • FIGS. 1a, 1c, 1d, 2a, 2c, 3a, 4a, 6, 9, 10 and 12a are schematic views of rectangular bags (1) with side view of a wall (2) - to illustrate the relative position of said stiffening element (5), said tear primer (4), and the presence of said guide means (6).
  • FIGS. 1a, 1d, 2a, 3a, 4a and 5 relate to sachets (1) with filling opening (13) unsealed and therefore ready to be filled
  • FIGS. 1c, 2c, 5 and 6 are relative to to closed bags after filling, with sealed filling border (14).
  • Figures 1b, 2b, 3b and 3c are side wall sections (2, 2 ') of the bags (1) at said first stiffening element (5) and possibly said guide means (6).
  • Figure 1a shows the bag (1) before filling.
  • Figure 1b is a section along AA of Figure la.
  • Figure 1c shows the bag (1) after filling and closing the bag.
  • Figure 1d similar to Figure 1a, shows the bag (1) in which the filling opening (13) is perpendicular to the side (15) of the first opening of the bag.
  • FIGS. 2a to 2c relate to another embodiment of the invention in which the stiffening element (5) is a wire (50) and in which the said guiding means (6) is constituted by a wire forming the said second stiffening element (61).
  • Figure 2a shows the bag (1) before filling.
  • Figure 2b is a section along AA of Figure la.
  • Figure 2c shows the bag (1) after filling and closing the bag.
  • FIG. 3a shows a bag (1) in which the filling opening (13) corresponds to the entire section of the bag, while the said upper part (11) corresponding to the part of the bag torn when it is first opened represents only the right corner of the bag.
  • the stiffening element (5) and said second stiffening element (61) are formed by localized deposits (53).
  • the stiffening element (5) and said second stiffening element (61) are formed by extra thicknesses (54) of the material forming the walls (2,2 ').
  • FIG. 4a is similar to FIG. 3a, but the stiffening element (5) and said second stiffening element (61) are formed by a single strip (52) fixed to the surface of each wall (2, 2 ') comprising a central line of weakening (520).
  • FIG. 5 shows a bag (1) in which the stiffening element (5) is formed by a wire (50), and wherein said second stiffening element (61) is formed by the sealing lip (14) typically "reinforced” "(62) by pleating.
  • FIGS. 7a to 8 schematically illustrate two methods of manufacturing the strip material (7) in the form of a coil (72) intended to form the bags (1) with insertion of the stiffening element (5) and the guiding means ( 6) constituted by a wire (50).
  • the strip (7) is formed by extrusion or assembly of two layers (70).
  • Figure 7a is a perspective view of the strip material (7), the wires (50) being parallel to the MD machine direction of the material.
  • dashed lines (71) schematize the cutting of walls (2,2 ') to form sachets (1).
  • Figure 7b is a cross sectional view before joining the two layers (70) between which are placed the son (50), to form a strip material (7), as schematized by the sectional view of Figure 7c.
  • Figure 8 is similar to Figure 7a, but the wire is no longer rectilinear, thanks to a transverse displacement of the wire (50) upstream, synchronized with the longitudinal movement in the MD direction.
  • Figure 9 is similar to Figure 1c, but the bag (1) is formed by folding along a fold line (16) corresponding to the bottom (17) of the bag.
  • Figure 10 is similar to Figure 1c, but the stiffening element (5) is constituted by a label (51), which can be optionally printed and / or metal.
  • FIG. 11 represents, in perspective, the bag (1) of FIG. 10 after opening and separation of the upper part (11), and manual pressure on the edges (19), so as to elastically separate the two labels (51). and thereby disengage the first opening opening (15).
  • FIG. 12a shows a bag (1) in which said stiffening element (1) and said second stiffening element (61) are formed by a label (55), which may optionally be printed and / or metallic, comprising a line of weakening (550) forming said partition line, comprising at its ends the tearing primers (4).
  • FIG. 12b represents a vertical cross section of the bag according to FIG. 12a, after opening and separation of the upper part (11), and reclosing by the use of a foldable, typically metallic and printed label (55), for example made of aluminum or comprising aluminum.
  • a foldable, typically metallic and printed label (55) for example made of aluminum or comprising aluminum.
  • FIG. 12 relates to the manufacture of PET / Al / PP strip material (7) between the layers of which PA 6/6 yarns are inserted between the PET / Al and PP layers.
  • Figure 13 is similar to Figure 12, but relates to the manufacture of PET // Al / OPP / PP material, a nylon thread being inserted between the PET and Al / OPP / PP layers.
  • Figure 14 is similar to Figure 13, but the wire is coated with glue (73) before being inserted between the PET and Al / OPP / PP layers.
  • FIGS. 15a to 15c illustrate the manufacture of a strip material (7) in which the stiffening element (5) is a wire (50) disposed in the transverse direction TD perpendicular to the machine direction MD.
  • FIG. 15a is a diagrammatic view, in longitudinal section perpendicular to the strip material (7) to be produced, of a device for laminating two films (70) with the aid of an adhesive (73), a wire (50) being deposited over the entire width of the strip at regular intervals, so as to obtain a material according to FIG. 15b (seen from above), then, after removal of the parts of wire external to the material, a material according to FIG. 15c , similar to Figure 15b.
  • FIG. 16 is a sectional view of two side walls (2) and (2 ') shown face to face before welding to form a bag, two upper strips (51) forming said guide means (6, 61), two lower strips forming said stiffening element (5).
  • said guide means (6) may comprise, on each side wall (2, 2 '), and typically in a parallel manner, a second stiffening element (61) constituting a secondary barrier to tearing. , typically parallel to said first stiffening element forming said main barrier, said leader being located between said main and secondary barriers, so as to maintain said tear between said first stiffening element and said second stiffening element during said first opening.
  • Said first and second stiffening elements forming said main and secondary barriers are preferably identical, continuous, parallel and spaced apart by a distance typically ranging from 1 to 20 mm, and preferably from 2 to 10 mm; they may optionally form a wire (50), a strip (52) or label (55) fixed to said face and having a weakening line (520, 550) typically obtained by mechanical or laser pre-cutting, said strip or label of a face (2) being opposite said strip of the other face (2 ').
  • This modality has been illustrated in FIGS. 2a to 2c and 5.
  • said partition line which generally runs along or merges with the line formed by the first stiffener (5), may be a line providing complete separation of said upper (11) and lower (12) portions. ). Indeed, it is generally more practical or aesthetic than it is, but this in itself is not mandatory. It is often advantageous that this partition line is a transverse line, so as to ensure total opening of said bag, as shown for example in Figures 1a to 2c. But we can have a partial opening, as shown in Figures 3a to 4a.
  • said first stiffening element (5, 50, 51, 52, 53, 54, 55) forming said barrier is chosen by its nature, its mechanical characteristics or its thickness, so that the propagation energy of said tear is typically at least 20% higher when crossing said main barrier (5 ') than in the web material (7) without stiffening element.
  • the propagation energy of the tear at the passing through said main barrier (5 ') comprising said first stiffening element (5), or the secondary barrier comprising said second stiffening element (61), can be much greater, at least two times greater, even five times higher and even more in some case, to the propagation energy of the tear in the strip material itself, so that it becomes almost impossible that, during the first opening, the tear can go astray out of the "track" which was assigned when designing said packaging.
  • said first stiffening element is constituted by an insert, typically by a wire (50) or a strip (51) secured to said side walls (2, 2 ').
  • Said wire (50) may be a textile yarn of natural, artificial or synthetic material, or a wire, said wire having a breaking strength of at least 0.5 N.
  • said strip (51) may be a strip of paper, or metal, or plastic monolayer or multilayer, and optionally printed.
  • said first stiffening element (5) forming said barrier may consist of a relief pattern (53) typically obtained by localized deposition of material, for example by printing, so as to form a thick relief. typically ranging from 20 to 200 ⁇ m, and thus locally increasing the thickness of said strip material by at least 20%.
  • a relief pattern typically obtained by localized deposition of material, for example by printing, so as to form a thick relief. typically ranging from 20 to 200 ⁇ m, and thus locally increasing the thickness of said strip material by at least 20%.
  • said first stiffening element may be constituted by an extra thickness (54) of the material constituting said face (2, 2 '), typically formed by punching or extrusion of said typically plastic material.
  • Said strip material (7) may comprise at least one layer (70) of extruded thermoplastic material or at least two layers (70) of coextruded thermoplastic material, or at least two layers (70) of strip material complexed, said stiffening member being typically oriented in the "machine" direction MD of the web material (70), as illustrated in Figs. 7a to 8 and 12 to 14 where the stiffener member is a yarn, but possibly in the "cross" TD direction as shown in Figure 15c.
  • Said sealing is a heat-sealing comprising a compression of the edges, in particular so that each end of said stiffening element (5, 50, 51) is coated by said strip material (7) by localized creep of said strip material, so as to do not alter the tightness of the packaging.
  • Said strip material (7) may be chosen from - or may comprise - one or more of the following materials: paper, metal foil typically made of aluminum, film or a layer of PET, PA, PP, oriented or bi-oriented PE, optionally metallized material, said material having a thickness between 20 and 200 ⁇ m, said strip material being a material comprising from 1 to 5 layers (70).
  • PE preferably a tear-off PE having a thickness of at least 60 ⁇ m is used.
  • the package may comprise, as illustrated in FIG. 12b, an attached bottom (18), so as to have a standing package.
  • said stiffener first element (5) may have features selected on the basis of its folding / unfolding ability to allow said package to be reclosed after said first opening.
  • a metal strip typically aluminum, which can also be printed.
  • a particular variant of the invention consists of a bag, typically with rectangular faces (2, 2 ') of multilayer material, typically comprising 2 to 4 layers, said first stiffening element of each face (2, 2') facing each other. and constituted by a textile yarn, typically PET or PA, parallel to said opening (13), and typically at a distance from this edge of between 5 mm and 30 mm, so that said upper portion (11) has relative to said lower part, a small relative area, typically less than 0.2 times the area of said lower part.
  • such a bag may have its filling opening (13) in said upper part, as illustrated in most of the bags shown in the figures, or in said lower part (12), as illustrated in FIG. 5, or still laterally as illustrated in Figure 1d where the filling opening is perpendicular to the score line formed by said main barrier.
  • Said first stiffening element (5) can also be located on the inside and / or outside of said wall (2, 2 ').
  • the invention also makes it possible to obtain all kinds of combinations depending on whether one considers the one or the other face, the first stiffening element (5) or the second stiffening element (61).
  • the first stiffening element (5), and possibly said guiding means may consist of or comprise a strip (51, 52), for example in the form of a typically extruded profile, as illustrated in FIGS. 10, 11, 16.
  • said strip (51, 52) also comprises a closure means, the strip of one face typically comprising a closure element cooperating with a complementary closure element, opposite, the other face, said closure means being typically of the "ZIP" type and located below said first stiffening element in said lower portion (12).
  • the packaging according to the invention may comprise a closure means, a face (2) typically comprising a closure element cooperating with a complementary closure element, opposite, the other face (2 '), said closure means being typically of the "ZIP" type and located below said first stiffening element in said lower portion (12).
  • said first stiffening element (5), and optionally said second stiffening element (61), may (may) be coated or typically coated with glue or adhesive so that it (s) is (are) fully integral with said strip material (7) and that there is no risk of delamination and risk of loss of sealing of the package or increase of the permeability of the packaging.
  • the materials forming the first stiffening element (5) and the second stiffening element (61) are compatible with the materials forming said strip material (7), but, with a choice of glue or suitable adhesive, it is virtually it is possible to adhere any type of first stiffening element (5) and second stiffening element (61) to said web material (7).
  • first stiffening element (5) and the second stiffening element (61) are inserted between the layers of the web material (7)
  • E R typically small compared to the thickness of the web material (7)
  • E B - for example at least 4 times smaller or even 8 times smaller (10 microns vs 80 microns.
  • said first stiffening element (5) and said second stiffening element (61) can be advantageously identical and be formed simultaneously, the band material (7) can also be oriented or not.
  • said strip material (7) may be chosen from the following multilayer materials: PET / PP, PET / A1 / PP, PET / A1 / OPA / PP, PET / A1 / PE, PET / A1 / OPA / PE, PET / OPA / A1 / PE, PET / PE, OPP / PE, OPP / PP, OPP / OPP, OPA / PP, OPA / PE, where "Al” (also referred to as "aluminum” or “ALU” in the figures) denotes thin aluminum foil, typically less than 20 microns, where OPP and OPA respectively denote oriented PP and PA, "/" symbolically designating the separation between distinct layers .
  • Al also referred to as "aluminum” or "ALU” in the figures
  • said supplied web material may comprise said first stiffening element (5) oriented in the transverse direction TD, perpendicular to the machine direction MD unwinding said web material.
  • Figs. 15a to 15c illustrate a way of industrially manufacturing a web material comprising a non-machine oriented yarn, as in Fig. 7a, but in the cross machine direction. We have shown, in dashed lines, in FIGS.
  • said supplied strip material not comprising said first stiffening element (5), said first stiffening element (5), and possibly said guiding means (6) if necessary, is formed or applied on the faces ( 2) and (2 ') during the implementation of said FFS process.
  • Said first stiffening element (5) - and possibly said guide means (6) if necessary - may be a strip applied on the inside of said container, so that nothing is visible from the outside, and / or so that the surface external of the bag is smooth.
  • FIG. 16 illustrates this pouch possibility, where the two lateral walls (2) and (2 ') are represented before face-to-face welding, the two upper strips (51) forming said guiding means (6, 61), the two lower strips forming said stiffening element (5). All these strips may be attached to the side walls either during the manufacture of said strip material, or during the manufacture of said container.
  • the strip material (7) comprises only two wires (50).
  • the invention finds application in the packaging of any type of product, whether it be for example food products, cosmetics or even cleaning products.
  • the invention has many advantages. On the one hand, it discloses a new type of packaging ensuring its integrity when first opened. It also discloses the many ways to implement the invention. It also discloses possibilities for incorporating other functions simultaneously with the packaging (reclosing, detection, etc.). Finally, depending on the modalities, it can be implemented possibly without significant additional cost.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Making Paper Articles (AREA)

Claims (30)

  1. Verpackung in Form eines Beutels für ein Produkt (8), welche Verpackung einen Behälter (1) bildet mit zwei Seitenwänden (2, 2'), einem Boden (17) und einer nach Abpacken des Produktes (8) in die Verpackung verschließbaren Einfüllöffnung (13), wobei der Behälter (1) aus einem von Hand reißbaren Bandmaterial (7) aus Kunststoff hergestellt ist und eine Erstöffnungszone (15) aufweist, welche mit einem an einem Rand (3, 14) des Behälters (1) ausgebildeten Aufreißschnitt (4) zum erstmaligen Öffnen der Verpackung nach deren Befüllung und Siegelung versehen ist, wobei der Rand (3, 14) durch Siegelung der Kanten der beiden Seitenwände (2, 2') gebildet wird, Verpackung, in deren Erstöffnungszone:
    a) jede Seitenwand (2, 2') gegenüberliegend und parallel verlaufend mindestens ein erstes Versteifungselement (5, 50, 51, 52, 53, 54) aufweist, das die Seitenwand örtlich verstärkt und mit der zugehörigen Seitenwand eine Hauptbarriere (5') für den typischerweise durchgehenden Riss bildet, wobei das Versteifungselement so gewählt ist, dass die Ausbreitungsenergie des Risses geringer ist als die Bruchenergie der Hauptbarriere, so dass die Hauptbarriere (5') eine Teilungslinie der Verpackung darstellt, mit einem oberen Teil (11), der beim erstmaligen Öffnen zumindest teilweise aufgerissen wird, und einem unteren Teil (12), der als Aufnahme für das Produkt (8) dient,
    b) der Aufreißschnitt (4) zumindest teilweise im oberen Teil (11) lokalisiert ist, in einem Abstand von weniger als 10 mm zum ersten Versteifungselement,
    c) jede Seitenwand (2, 2') ein Führungsmittel (6, 60, 61) für den Riss beim erstmaligen Öffnen aufweist, so dass der Riss nur höchstens 20 mm vom Versteifungselement entfernt sein kann,
    d) das Führungsmittel (6) gebildet ist durch:
    d1) ein gewähltes Bandmaterial (7, 60), welches in eine symbolisch bezeichnete Richtung "O=>" orientiert ist, wobei die Ausbreitungsenergie des Risses in diese Richtung mindestens 1,5 mal geringer ist als in eine Querrichtung,
    d2) eine relative Orientierung der Richtung "O=>" zur Orientierung der vom ersten Versteifungselement gebildeten Teilungslinie, so dass sich der Riss längs dieser Teilungslinie der Verpackung ausbreitet,
    und dadurch gekennzeichnet, dass:
    1) das Bandmaterial (7) ein Mehrschichtmaterial ist, wobei das Versteifungselement (5, 50, 51) zwischen zwei Schichten (70) des Mehrschichtmaterials eingefügt ist,
    2) die Verpackung entweder aus zwei Bandmaterialien hergestellt ist, durch Schneiden der beiden Bandmaterialien, von denen jedes eine Seitenwand (2, 2') der Verpackung bildet, und Siegelung der Kanten zur Ausbildung eines Randes (3), oder aus nur einem Bandmaterial hergestellt ist, durch Faltung, Siegelung und Schneiden, wobei eine Seite der Verpackung eine Falte (15) bildet,
    3) die Siegelung eine Heißsiegelung ist, die ein Zusammenpressen der Kanten umfasst.
  2. Verpackung nach Anspruch 1, bei der das Führungsmittel für die Teilungslinie und die Richtung einen Winkel α von 0 bis 45° bildet und wobei die Verpackung einen oder zwei Aufreißschnitte (4) aufweist, die selbst einen zur Teilungslinie orientierten spitzen Winkel bilden.
  3. Verpackung nach irgendeinem der Ansprüche 1 bis 2, bei der das Führungsmittel (6) an jeder Seitenwand (2, 2') und parallel verlaufend ein eine Sekundärbarriere für den Riss bildendes zweites Versteifungselement (61) aufweist, das parallel zu dem die Hauptbarriere bildenden ersten Versteifungselement verläuft, wobei der Aufreißschnitt zwischen der Haupt- und Sekundärbarriere lokalisiert ist, um den Riss beim erstmaligen Öffnen zwischen dem ersten Versteifungselement und dem zweiten Versteifungselement zu halten.
  4. Verpackung nach Anspruch 3, bei der die Haupt- und die Sekundärbarriere identisch, durchgehend, parallel und in einem Abstand von 1 bis 20 mm und vorzugsweise 2 bis 10 mm voneinander entfernt sind, wobei die Haupt- und die Sekundärbarriere einen Faden (50), ein Bändchen (52), ein Etikett (55) bilden, welcher bzw. welches an der Seite befestigt ist und eine typischerweise durch mechanisches Vorschneiden, Vorschneiden mittels Laser erzeugte Schwächungslinie (520, 550) aufweist, wobei das Bändchen, das Etikett der einen Seite (2) dem Bändchen der anderen Seite (2') gegenüberliegt.
  5. Verpackung nach irgendeinem der Ansprüche 1 bis 4, bei der die Teilungslinie eine Linie ist, die eine komplette Trennung von oberem (11) und unterem Teil (12) gewährleistet.
  6. Verpackung nach Anspruch 5, bei der die Teilungslinie eine Querlinie ist, um die vollständige Öffnung des Beutels zu gewährleisten.
  7. Verpackung nach irgendeinem der Ansprüche 1 bis 6, bei der das die Barriere bildende erste Versteifungselement (5, 50, 51, 52, 53, 54, 55) aufgrund seiner Art, seiner Festigkeitseigenschaften, seiner Dicke so gewählt ist, dass die Ausbreitungsenergie des Risses beim Überschreiten der Hauptbarriere (5') mindestens 20 % höher ist als im Bandmaterial (7) ohne Versteifungselement.
  8. Verpackung nach Anspruch 7, bei der das erste Versteifungselement aus einem hinzugefügten Element, einem Faden (50), einem Bändchen (51) besteht, die an den Seitenwänden (2, 2') festgelegt sind.
  9. Verpackung nach Anspruch 8, bei der der Faden (50) ein Textilfaden aus Natur-, Kunst-, Synthetikstoff, ein Metallfaden ist, wobei der Faden eine Bruchfestigkeit von mindestens 0,5 N aufweist.
  10. Verpackung nach Anspruch 8, bei der das Bändchen (51) ein Bändchen aus Papier, aus Metall, aus ein- oder mehrschichtigem Kunststoff ist.
  11. Verpackung nach irgendeinem der Ansprüche 1 bis 7, bei der das die Barriere bildende erste Versteifungselement aus einem reliefartigen Motiv (53) besteht, das durch örtlich begrenzte Materialabscheidung, zum Beispiel durch Bedrucken so erzeugt wird, dass ein Relief von typischerweise 20 bis 200 µm Dicke entsteht und dadurch die Dicke des Bandmaterials örtlich um mindestens 20 % erhöht wird.
  12. Verpackung nach irgendeinem der Ansprüche 1 bis 7, bei der das erste Versteifungselement aus einer Überdicke (54) des Materials der Seitenwand (2, 2') besteht, die durch Stanzen, durch Extrudieren des Materials erzeugt wird.
  13. Verpackung nach irgendeinem der Ansprüche 1 bis 12, bei der das Bandmaterial (7) aus mindestens zwei koextrudierten Schichten (70) aus Thermoplast oder aus zwei Verbundschichten (70) Bandmaterial besteht, wobei das Versteifungselement typischerweise in die "Maschinenrichtung" MD des Bandmaterials (70) orientiert ist.
  14. Verpackung nach irgendeinem der Ansprüche 1 bis 13, bei der das Zusammenpressen der Kanten so erfolgt, dass jedes Ende des ersten Versteifungselements (5, 50, 51) von dem Bandmaterial (7) durch örtlich begrenztes Fließen des Bandmaterials umhüllt wird.
  15. Verpackung nach irgendeinem der Ansprüche 1 bis 14, bei der das Bandmaterial (7) aus mindestens einem der folgenden Werkstoffe besteht: Papier, Metallfolie, typischerweise aus Aluminium, Film oder eine Schicht aus orientiertem PET, PA, PP, PE, biorientiertem PET, PA, PP, PE, die gleichen Werkstoffe metallisiert, wobei der Werkstoff eine Dicke von 20 bis 200 µm aufweist, das Bandmaterial ein Material bestehend aus 1 bis 5 Schichten (70) ist.
  16. Verpackung nach irgendeinem der Ansprüche 1 bis 15, mit einem angefügten Boden (18), um eine Standbeutelverpackung zu erhalten.
  17. Verpackung nach irgendeinem der Ansprüche 1 bis 16, bei der das erste Versteifungselement (5) metallisch ist und Eigenschaften aufweist, die so gewählt sind, dass eine Detektion der Verpackung oder ihr Wiederverschließen nach dem erstmaligen Öffnen möglich ist.
  18. Verpackung nach irgendeinem der Ansprüche 1 bis 17, bestehend aus einem Beutel mit beispielsweise zwei rechteckigen Seiten (2, 2') aus Mehrschichtmaterial mit 2 bis 4 Schichten, wobei das erste Versteifungselement auf jeder Seite (2, 2') gegenüberliegend angeordnet ist und aus einem Textilfaden aus PET oder PA besteht, der parallel zur Öffnung (13) und in einem Abstand von 1 bis 50 mm zu diesem Rand verläuft, so dass der obere Teil (11) im Vergleich zum unteren Teil eine kleine Relativfläche aufweist, die kleiner ist als das 0,2-fache der Fläche des unteren Teils.
  19. Verpackung nach irgendeinem der Ansprüche 1 bis 18, bei der das erste Versteifungselement an der Innen- und/oder Außenseite der Wand (2, 2') lokalisiert ist.
  20. Verpackung nach irgendeinem der Ansprüche 1 bis 19, bei der das erste Versteifungselement ein Bändchen (51, 52) aufweist, das ein typischerweise extrudiertes Profil bildet.
  21. Verpackung nach Anspruch 20, bei der das Bändchen (51, 52) außerdem ein Verschließmittel aufweist, wobei das Bändchen einer Seite ein Verschließmittel aufweist, das mit einem gegenüberliegenden, komplementären Verschließmittel der anderen Seite zusammenwirkt, welches Verschließmittel zum Beispiel ein Zip-Verschluss ist und unterhalb des ersten Versteifungselements im unteren Teil (12) lokalisiert ist.
  22. Verpackung nach irgendeinem der Ansprüche 1 bis 21 mit einem Verschließmittel, wobei eine Seite (2) ein Verschließmittel aufweist, das mit einem gegenüberliegenden, komplementären Verschließmittel der anderen Seite (2') zusammenwirkt, welches Verschließmittel zum Beispiel ein Zip-Verschluss ist und unterhalb des ersten Versteifungselements im unteren Teil (12) lokalisiert ist.
  23. Verfahren zur Herstellung einer Verpackung nach irgendeinem der Ansprüche 1 bis 22, bei dem:
    a) durch Extrusion, Koextrusion, Verbundbildung, Kaschierung mindestens ein Teil des Bandmaterials (7) hergestellt wird und an diesem Material während der Extrusion, Koextrusion, Verbundbildung, Kaschierung das erste Versteifungselement (5, 50, 51) und gegebenenfalls das zweite Versteifungselement (61) festgelegt werden, wobei das erste Versteifungselement und gegebenenfalls das zweite Versteifungselement bereitgestellt und in Maschinenrichtung MD des Bandmaterials (7) abgewickelt werden und durch Vorschub des extrudierten, koextrudierten, einen Verbund bildenden, kaschierten Bandmaterials (7) mitgeführt werden,
    b) der Behälter (1) hergestellt wird, indem ein Siegelrand (3) aus den aus zwei Materialbändern (7) oder aus einem Materialband durch Faltung gebildeten Seiten (2, 2') gebildet wird, der Aufreißschnitt (4) ausgebildet wird und der Behälter ausgeschnitten wird.
  24. Verfahren zur Herstellung einer Verpackung nach irgendeinem der Ansprüche 1 bis 22, bei dem:
    a) das Bandmaterial (7) und das erste Versteifungselement (5) und gegebenenfalls das zweite Versteifungselement (6) bereitgestellt werden,
    b) und danach der Behälter (1) hergestellt wird, indem ein Siegelrand (3) aus den aus zwei Materialbändern (7) oder aus einem Materialband durch Faltung gebildeten Seiten (2, 2') gebildet wird, der Aufreißschnitt (4) ausgebildet wird und der Behälter ausgeschnitten wird, wobei gegebenenfalls das zweite Versteifungselement an dem Behälter typischerweise durch Schweißen, durch Kleben an der Innen- oder Außenseite der Verpackung während der Herstellung des Behältnisses befestigt wird.
  25. Verfahren nach irgendeinem der Ansprüche 23 bis 24, bei dem das erste Versteifungsmittel (5) und gegebenenfalls das zweite Versteifungsmittel (61) mit Leim, mit Klebstoff bestrichen oder überzogen werden, so dass sie fest mit dem Bandmaterial (7) verbunden sind.
  26. Verfahren nach irgendeinem der Ansprüche 23 bis 25, bei dem das erste Versteifungsmittel (5) und das zweite Versteifungsmittel (61) identisch sind und gleichzeitig gebildet werden.
  27. Verfahren nach irgendeinem der Ansprüche 23 bis 26, bei dem das Bandmaterial (7) unter den folgenden Mehrschichtmaterialien gewählt wird: PET/PP, PET/AI/PP, PET/AI/OPA/PP, PET/AI/PE, PET/AI/OPA/PE, PET/OPA/AI/PP, PET/OPA/AI/PE, PET/PE, OPP/PE, OPP/PP, OPA/PP, OPA/PE.
  28. Verfahren nach irgendeinem der Ansprüche 23 bis 27, bei dem das Bandmaterial bereitgestellt und das Produkt (8) nach Herstellung des Behälters in den Behälter abgepackt wird und die Verpackung verschlossen wird, bevor der Aufreißschnitt (4) ausgebildet und der Behälter ausgeschnitten wird, so dass das sog. FFS- od. Form-Fill-Seal-Verfahren durchgeführt wird.
  29. Verfahren nach Anspruch 28, bei dem das bereitgestellte Bandmaterial das in TD-Richtung quer zur MD-Abwickelrichtung des Bandmaterials orientierte, erste Versteifungselement (5) beinhaltet.
  30. Bandmaterial oder Film zur Durchführung des Verfahrens nach irgendeinem der Ansprüche 23 bis 29, beinhaltend das erste Versteifungselement (5) und das Führungsmittel, wobei das erste Versteifungsmittel (5) und das Führungsmittel in Maschinenrichtung MD oder in Querrichtung TD orientiert sind.
EP02801072A 2001-11-28 2002-11-20 Verpackung, wie zum beispiel beutel, mit ausgerichteter aufreissöffnung Expired - Lifetime EP1458627B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0115383 2001-11-28
FR0115383A FR2832698B1 (fr) 2001-11-28 2001-11-28 Emballage, typiquement un sachet, a ouverture par dechirure orientee
PCT/FR2002/003966 WO2003045816A2 (fr) 2001-11-28 2002-11-20 Emballage a ouverture par dechirure orientee

Publications (2)

Publication Number Publication Date
EP1458627A2 EP1458627A2 (de) 2004-09-22
EP1458627B1 true EP1458627B1 (de) 2007-04-18

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EP02801072A Expired - Lifetime EP1458627B1 (de) 2001-11-28 2002-11-20 Verpackung, wie zum beispiel beutel, mit ausgerichteter aufreissöffnung

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US (1) US20050031232A1 (de)
EP (1) EP1458627B1 (de)
AT (1) ATE359972T1 (de)
AU (1) AU2002364791A1 (de)
DE (1) DE60219688T2 (de)
ES (1) ES2286329T3 (de)
FR (1) FR2832698B1 (de)
WO (1) WO2003045816A2 (de)

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Publication number Publication date
WO2003045816A8 (fr) 2004-06-03
DE60219688D1 (de) 2007-05-31
FR2832698B1 (fr) 2004-07-09
ES2286329T3 (es) 2007-12-01
ATE359972T1 (de) 2007-05-15
WO2003045816A3 (fr) 2004-01-22
DE60219688T2 (de) 2007-12-27
US20050031232A1 (en) 2005-02-10
FR2832698A1 (fr) 2003-05-30
EP1458627A2 (de) 2004-09-22
WO2003045816A2 (fr) 2003-06-05
AU2002364791A1 (en) 2003-06-10

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