EP0807587B1 - Beutel aus flexiblem Verpackungsmaterial - Google Patents

Beutel aus flexiblem Verpackungsmaterial Download PDF

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Publication number
EP0807587B1
EP0807587B1 EP96810308A EP96810308A EP0807587B1 EP 0807587 B1 EP0807587 B1 EP 0807587B1 EP 96810308 A EP96810308 A EP 96810308A EP 96810308 A EP96810308 A EP 96810308A EP 0807587 B1 EP0807587 B1 EP 0807587B1
Authority
EP
European Patent Office
Prior art keywords
bag
film
packaging material
weakened part
printing
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
EP96810308A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0807587A1 (de
Inventor
Claude Aloise Marbler
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.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
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 Alcan Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to DK96810308T priority Critical patent/DK0807587T3/da
Priority to DE59609013T priority patent/DE59609013D1/de
Priority to EP96810308A priority patent/EP0807587B1/de
Priority to ES96810308T priority patent/ES2172651T3/es
Priority to CA002204083A priority patent/CA2204083C/en
Priority to MXPA/A/1997/003468A priority patent/MXPA97003468A/xx
Priority to US08/855,408 priority patent/US5934809A/en
Priority to BR9703162A priority patent/BR9703162A/pt
Priority to ARP970102007A priority patent/AR007123A1/es
Publication of EP0807587A1 publication Critical patent/EP0807587A1/de
Priority to US09/253,254 priority patent/US6173554B1/en
Application granted granted Critical
Publication of EP0807587B1 publication Critical patent/EP0807587B1/de
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
    • B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall
    • 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
    • B65D75/585—Tear-lines provided in a wall portion the tear-lines being broken by deformation or bending
    • 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
    • B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
    • B65D75/06—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes
    • B65D75/12—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes with the ends of the tube closed by flattening and heat-sealing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S493/00—Manufacturing container or tube from paper; or other manufacturing from a sheet or web
    • Y10S493/916—Pliable container
    • Y10S493/917—Envelope
    • Y10S493/923—Envelope with opening means, e.g. tear strip, valve

Definitions

  • the present invention relates to flexible film-coated bags Packaging material with a tear zone.
  • a printed packaging film for packaging is known from US Pat. No. 5,316,209 of angular objects.
  • the packaging film is with a overlapping seam is wrapped around the object and the printing controls the adhesion the overlapping seam on the packaging film.
  • US Pat. No. 1,578,066 describes a packaging for butter, which is to be packaged Well encased in a cardboard box with perforations as predetermined breaking points is. Unperforated wax paper is wrapped around the box.
  • the object of the present invention is to provide a bag that can be used in any Location and advantageous in an edge area, contains attachable tear aid and the bag can be opened easily, the contents of the bag being released in this way is that the content can be removed without further manipulation of the opening.
  • this is achieved in that the tear zone weakened in Form of a cut, a perforation or a notch in the packaging material and the area of weakening is covered with at least one film-forming mass is and after the packaging process a content is protected by the bag and for Removal of the contents of the bag a pulling or kinking movement of the layered film Mass breaks open and at the severing of the pouch releases the contents or the overlaid film-forming mass breaks open and the perforation or notch tears open and the bag releases the contents.
  • Packaging materials include such made of paper, optionally covered with barrier layers and / or with plastics or made of Cellular glass or packaging materials containing aluminum foils, such as with sealing layers and occasionally additional plastic layers provided with aluminum foils or packaging materials made of plastic foils or of plastic foils, which on one or both sides with Paper or metal foils are coated or packaging materials made of plastics, which is a barrier layer such as a plastic barrier layer, ceramic barrier layer or a contain metallic barrier layer.
  • plastics which can be used are polyolefins, such as polyethylenes or polypropylenes, Polyamides, polyvinyl chloride or polyester etc., each as a mono film or as a film composite or using different plastics in a composite as a multilayer Foil composites are used.
  • barrier layers between at least two layers such as. Ethyl vinyl alcohol barrier layers, or ceramic resp. vitreous or metallic barrier layers may be arranged.
  • the plastic films or film composites can have a thickness of, for example, 10 to 100 ⁇ m, preferably 30 to 50 ⁇ m.
  • the packaging material can be coated on one or both sides, preferably on the side facing inwards in the bag produced therefrom, with a sealing layer, for example a sealing lacquer or a sealing film made of, for example, polyolefins, such as polyethylene.
  • a sealing layer for example, a sealing lacquer or a sealing film made of, for example, polyolefins, such as polyethylene.
  • a sealing layer containing 6 to 7 g / m 2 sealing wax is sufficient for impermeable heat-sealed bags.
  • the packaging material is advantageously used as continuous or roll goods.
  • the weakening of the packaging material can be mechanical, for example by cutting knife, chemically e.g. by solvent, thermally, e.g. by laser beams, in the form of a cut, a perforation, a notch, etc. be made.
  • the severing is preferred.
  • the weakening can be straight forward or be curved and the weakening can be designed such that it Pouch made of flexible packaging material around the entire circumference or extends part of the circumference of the respective bag.
  • the area of weakening on the bag according to the invention is film-forming Mass covered.
  • the area of weakening not only does the weakening itself become special also the adjacent parts of the packaging material, for example the area between 2 and 20 mm, preferably 5 and 10 mm, adjacent to the weakening, understood.
  • the bag according to the invention can only weaken with the film-forming area Mass be coated, but such a bag is advantageous completely with the film-forming Mass coated.
  • the film-forming mass in particular represents the printing on the Bag.
  • the film-forming mass is thicker in the region of the weakening than in the rest of the bag.
  • the film-forming mass can be a Layer or a plurality, for example two, three, four, five, six etc. layers, about film-forming masses.
  • the film-forming mass covers and closes the previously applied weakening and gives the packaging material in the area of Weakening again a tensile strength.
  • the film-forming mass can advantageously be in the range of the weakening in amounts of 2 to 8 g / m 2 , expediently 3 to 6 g / m 2 and advantageously 3.5 to 5 g / m 2 applied. Outside the weakening range, the film-forming mass can be applied, for example, in amounts of 1 to 7 g / m 2 , expediently 1 to 5 g / m 2 and advantageously 1 to 4 g / m 2 .
  • paint colors can be made from volatile Constituents, such as solvents, and non-volatile constituents, such as film formers, resins, Plasticizers, auxiliaries, dyes, pigments, fillers etc. are used.
  • Printing inks are preferred as film-forming compositions containing dyes or pigments, Solvents, fillers, other additives and binders.
  • binders Resins, varnishes, nitrocellulose, polyamides, vinyl resins, rosins, maleate resins, Shellac, etc.
  • the paint colors are especially printing inks and can be by means of a Printing machine as printing on the weakened flexible packaging material be printed on.
  • the printing represents not only the film-forming mass, but also at the same time also the decorative, and occasionally also informative, printing for the bags.
  • the printing on the packaging material can be printed on the outside of a bag or on the inward-facing side or on both sides.
  • substances can also be converted into a plastic form, as softened or melted and on the packaging material, on the outside of a bag or on the inward-facing side or on both sides, as a film.
  • the film-forming composition can be applied by an extrusion coating.
  • Extrusion coating is suitable, for example, polyolefins, such as polyethylenes or polypropylenes, or materials containing polyvinyl chloride.
  • Hot-melt coating compositions are also used with film-forming compositions called includes.
  • includes are, for example, at normal temperature solid, viscoelastic or viscoplastic materials, preferably based on Resins, waxes, thermoplastics and elastomers, possibly with the addition of fillers, antioxidants, Lubricants and the like, which when heated after passing through a thermoplastic Transition into viscous or low-viscosity melts.
  • the film formation on the packaging material by means of the film-forming masses can also with chemically drying paints.
  • the chemically dried paints contain cross-linked macromolecules by chemical reaction and thereby in particular can be obtained by polymerization.
  • the film-forming compositions can also be films, in particular low tensile strength or high Brittleness, be.
  • the thicknesses of the foils can e.g. from 5 to 20 ⁇ m.
  • Preferred foils can contain polyolefins, such as polyethylenes or polypropylenes, polyesters or polyamides.
  • the films can on the packaging material, on the outside of a bag or on the inward facing side or on both sides, whereby the adhesion of the film or films to the packaging material by means of laminating adhesive and / or adhesion promoters, if necessary with the additional use of corona, flame, Plasma or ozone treatment can be done.
  • the film in particular have sealing properties when used on the inside of the bag.
  • the film then also represents a sealing layer.
  • the film can also, as one further film-forming mass arranged over the printing varnish on the packaging material his.
  • the materials of the film-forming compositions are expedient and physiologically harmless approved for food packaging.
  • sealing waxes e.g. from polyolefins, such as polyethylenes, which are attached to the printing ink become.
  • the film-forming composition is preferably on the outside of the bag Page.
  • the film-forming mass can also be directed towards the inside of the bag Side attached. It can e.g. is the ink of a counterprint.
  • Another film-forming mass can be formed on the printing ink of the reverse printing a sealing wax arranged.
  • the packaging material can also be on the bag a layer of a film-forming mass, e.g. a printing varnish, and contain a sealing wax on the inside of the bag.
  • the present invention also relates to a method for producing a bag according to the present invention Invention.
  • the method can advantageously be carried out in such a way that the flexible Packaging material a weakening is attached and then the weakening is covered by at least one film-forming mass.
  • lacquers printing inks, extrusion layers, Hot melt masses and etc. are used. Usually acts it is liquid resp. melted paint systems.
  • the application of the film-forming masses can, for example, by centrifuging, spinning, flooding, pouring, rolling, spraying, Brushing, printing, extruding, etc. are carried out.
  • flexible packaging materials are endless, which is why coating processes such as extrusion, spraying, rolling, printing or pouring in particular to offer.
  • the flexible packaging material is combined in one Provide the printing unit with the weaknesses and then the printing with Printing varnishes made as a film-forming mass.
  • This process becomes flexible Packaging material in a printing press, for example in a high-pressure, gravure, Offset printing and in particular flexographic printing machine performed.
  • printing machines are header printing units, multi-cylinder, single-cylinder, in-line, flexo and vario printing machines or combinations thereof, such as Flexographic and gravure printing machines.
  • the weakening is advantageously achieved by machines in the area of the first impression cylinder a cutting unit attached to the flexible packaging material.
  • the packaging material with the intended pressure, including the weakening is overprinted and the printing varnish closes the weakening.
  • the printing varnish application e.g. guided such that the total thickness of the printing varnish in the area of weakening is larger than in the rest of the flexible packaging material.
  • Present bags made of flexible packaging material can be used for food packaging powdery to firm consistency.
  • a preferred use lies in the packaging of chocolate bars, starchy foods, fatty foods, or food preparations in the form of mixtures Chocolate with starch and / or fatty foods, all food preparations advantageous in the form of bars.
  • the packaging of chocolate bars and the like is preferred because in the opening process in in this case the chocolate bar as a repository for tearing the bag open serves.
  • the bags are made of tube material, the bags each end a cross seam seal on or, if the bags are made of flat material, the bags have a longitudinal seam seal and a transverse seam seal at the end.
  • the Seams can be sealed by cold sealing, heat sealing or by gluing.
  • the weakness is in the packaging of chocolate bars, for example advantageous in one of the two end regions of the bag, i.e. approx. 10-30 mm from the end of the bag, which is finished with a cross seal seam.
  • Tubular bags with are particularly preferred a longitudinal seam seal and terminal transverse seam seals. If the bag runs along the When the weakening is torn open, the tear continues up to a maximum of the entire bag circumference around, but the longitudinal seam sealing prevents tearing. At the The longitudinal end and the longitudinal seam seal catches the kinked end of the bag. The contents of the bag can now be easily pushed out or directly from the packaging be consumed, the kinked piece of bag over the longitudinal seam with the remaining bag remains connected and no piece of bag to be disposed of or dropped to the floor forms.
  • FIGS. 1 to 6 explain the present invention in more detail by way of example.
  • Figure 1 shows schematically the production of a tubular bag.
  • Figure 2 shows schematically the view of a tubular bag.
  • Figures 3, 4 and 5 show another tubular bag from the front and back, as well as in the torn condition.
  • FIG. 6 shows a section through the packaging material in the area of a weakening.
  • the packaging material 10 which is already with the weaknesses and, for example, overpainting over the weakenings in the form of a multi-color print is provided, unrolled from a supply roll and fed to the packaging process.
  • the arrow 11 indicates the product insert and the product insert is continuous the longitudinal seam seal 12 and the transverse seam seal 13, respectively a packing unit 14 is created.
  • a cutting device 15 divides the material into tubular bags 16 with the transverse seams 17 and the longitudinal seam 19.
  • the tubular bag 16 is shown in FIG.
  • the longitudinal seam 19 is located on the back and the tubular bag 16 is closed at both ends with transverse seams 17. by broken the weakening 18 is indicated, which is in the region of one end of the tubular bag 16 is located and is covered with, for example, a printing varnish.
  • Figures 3 and 4 show another tubular bag 16 with the transverse seams 17 on both Ends and the longitudinal seam 19.
  • the weakening 18 which is below the print pattern generated by printing varnish is shown, dash-dotted lines.
  • Will the Pack for example by gripping the pack at the transverse seams 17 and by pulling apart stressed in tension, the pack separates along the weakening 18 the film material tears on and by pulling and, for example, folding at the same time further, generally along a tear line 20, which is shown in dotted lines in FIG. 3.
  • the tear line 20 ends at the longitudinal seam 19, since there is a material accumulation or. material thickening was created by the folding and sealing.
  • the two Parts of the tubular bag 16 hold together with the longitudinal seam 19 and can then be disposed of together.
  • Figure 5 shows the tubular bag 16 with the transverse seams 17 and the longitudinal seam 19 in torn Shape.
  • the kinked bag part 27 is over the packaging material of the longitudinal seam 19 connected to the rest of the tubular bag 16.
  • the tearing took place along the Weakening 18 and continued over the tear line 20 to the longitudinal seam 19.
  • the content 26, e.g. a chocolate bar, the tubular bag 16 can now be easily removed or directly be consumed out of the pack.
  • FIG. 6 shows a section through the packaging material 10 in the area of the weakening 18.
  • the weakening 18 was carried out, for example, on a plastic film 21 and the weakening 18 represents a severing of the plastic film
  • Plastic film 21 is a multi-layer on the outside of the bag, in the Usually multi-colored, printing with the printing varnishes 23, 24 and 25 attached.
  • an additional layer of a was in the area of the weakening 18 of the printed image Printing varnish 24 applied, whereby the total thickness of the printing varnish layer compared the rest of the packaging material 10 increased and the weakening safely covered, closed and the packaging material 10 is again given a tensile strength.
  • the packaging material 10 on the side facing inward on the bag Sealing layer 22, in particular a sealing wax may be attached.
  • the sealing wax 22 serves primarily for later sealing of the seams, but the printing varnish 23, 24, 25 in its Support effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
EP96810308A 1996-05-15 1996-05-15 Beutel aus flexiblem Verpackungsmaterial Expired - Lifetime EP0807587B1 (de)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DK96810308T DK0807587T3 (da) 1996-05-15 1996-05-15 Pose af fleksibelt indpakningsmateriale
DE59609013T DE59609013D1 (de) 1996-05-15 1996-05-15 Beutel aus flexiblem Verpackungsmaterial
EP96810308A EP0807587B1 (de) 1996-05-15 1996-05-15 Beutel aus flexiblem Verpackungsmaterial
ES96810308T ES2172651T3 (es) 1996-05-15 1996-05-15 Bolsa de material flexible de empaquetado.
CA002204083A CA2204083C (en) 1996-05-15 1997-04-30 Pouch of flexible packaging material
MXPA/A/1997/003468A MXPA97003468A (en) 1996-05-15 1997-05-12 Empaquet flexible material bag
US08/855,408 US5934809A (en) 1996-05-15 1997-05-13 Pouch of flexible packaging material with integrated weakness for opening
BR9703162A BR9703162A (pt) 1996-05-15 1997-05-14 Involucro de material de embalagem flexível
ARP970102007A AR007123A1 (es) 1996-05-15 1997-05-14 Bolsa recubierta con masas formadoras de pelicula, fabricada a partir de material flexible de empaquetado y procedimiento para su fabricacion
US09/253,254 US6173554B1 (en) 1996-05-15 1999-02-19 Pouch of flexible packaging material with integrated weakness for opening

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96810308A EP0807587B1 (de) 1996-05-15 1996-05-15 Beutel aus flexiblem Verpackungsmaterial

Publications (2)

Publication Number Publication Date
EP0807587A1 EP0807587A1 (de) 1997-11-19
EP0807587B1 true EP0807587B1 (de) 2002-04-03

Family

ID=8225610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810308A Expired - Lifetime EP0807587B1 (de) 1996-05-15 1996-05-15 Beutel aus flexiblem Verpackungsmaterial

Country Status (8)

Country Link
US (2) US5934809A (da)
EP (1) EP0807587B1 (da)
AR (1) AR007123A1 (da)
BR (1) BR9703162A (da)
CA (1) CA2204083C (da)
DE (1) DE59609013D1 (da)
DK (1) DK0807587T3 (da)
ES (1) ES2172651T3 (da)

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BR9703162A (pt) 1998-09-22
EP0807587A1 (de) 1997-11-19
DE59609013D1 (de) 2002-05-08
US5934809A (en) 1999-08-10
ES2172651T3 (es) 2002-10-01
MX9703468A (es) 1998-06-30
CA2204083A1 (en) 1997-11-15
CA2204083C (en) 2005-02-15
AR007123A1 (es) 1999-10-13
DK0807587T3 (da) 2002-07-29
US6173554B1 (en) 2001-01-16

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