EP0807587A1 - A bag made of a flexible packing material - Google Patents

A bag made of a flexible packing material Download PDF

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Publication number
EP0807587A1
EP0807587A1 EP96810308A EP96810308A EP0807587A1 EP 0807587 A1 EP0807587 A1 EP 0807587A1 EP 96810308 A EP96810308 A EP 96810308A EP 96810308 A EP96810308 A EP 96810308A EP 0807587 A1 EP0807587 A1 EP 0807587A1
Authority
EP
European Patent Office
Prior art keywords
bag
weakening
film
packaging material
forming
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
EP96810308A
Other languages
German (de)
French (fr)
Other versions
EP0807587B1 (en
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
Alusuisse Lonza Services Ltd
Alusuisse 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 Alusuisse Lonza Services Ltd, Alusuisse Technology and Management Ltd filed Critical Alusuisse Lonza Services Ltd
Priority to EP96810308A priority Critical patent/EP0807587B1/en
Priority to DK96810308T priority patent/DK0807587T3/en
Priority to DE59609013T priority patent/DE59609013D1/en
Priority to ES96810308T priority patent/ES2172651T3/en
Priority to CA002204083A priority patent/CA2204083C/en
Priority to MXPA/A/1997/003468A priority patent/MXPA97003468A/en
Priority to US08/855,408 priority patent/US5934809A/en
Priority to BR9703162A priority patent/BR9703162A/en
Priority to ARP970102007A priority patent/AR007123A1/en
Publication of EP0807587A1 publication Critical patent/EP0807587A1/en
Priority to US09/253,254 priority patent/US6173554B1/en
Application granted granted Critical
Publication of EP0807587B1 publication Critical patent/EP0807587B1/en
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 bags made of flexible packaging material with a tear zone and coated with film-forming compositions.
  • the object of the present invention is to provide a bag which contains a tear-open aid which can be attached at any point and advantageously in an edge region and the bag can be opened easily, the contents of the bag being released in such a way that the contents are removed without further manipulation of the opening can be.
  • the tear zone is a weakening in the packaging material and the area of the weakening is covered with a film-forming mass and after the packaging process a content is protected by the bag and a pulling or kinking movement to remove the content of the bag overlaps the overlapping one film-forming mass breaks open and the bag releases the contents.
  • Bags according to the present invention are understood to mean, for example, flat bags, sealed edge bags, space bags or tubular bags. Sealed edge bags and tubular bags are preferred.
  • the packaging materials should be machine-compatible, ie suitable for use on packaging machines.
  • the packaging materials include those made of paper, optionally laminated with barrier layers and / or with plastics, or made of cellophane or packaging materials containing aluminum foils, such as aluminum foils provided with sealing layers and occasionally further plastic layers, or packaging materials made of plastic foils or of plastic foils which contain or are coated on both sides with paper or metal foils or plastic packaging materials that contain a barrier layer such as a plastic barrier layer, ceramic barrier layer or a metallic barrier layer.
  • plastics which can be used are polyolefins, such as polyethylenes or polypropylenes, polyamides, polyvinyl chloride or polyester, etc., in each case as a monofilm or as a film composite or, using different plastics, as a multilayer film composite.
  • Barrier layers such as e.g. Ethyl vinyl alcohol barrier layers, or ceramic resp. glass-like 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 polyethylenes.
  • a sealing layer for example, a sealing lacquer or a sealing film made of, for example, polyolefins, such as polyethylenes.
  • 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.
  • a weakening is applied to the packaging material in the area of the tear zone provided for the bag.
  • the weakening of the packaging material can be mechanical, e.g. by cutting knives, chemical, e.g. by solvent, thermally, e.g. by laser beams, in the form of a cut, a perforation, a notch, etc.
  • the severing is preferred.
  • the weakening can be rectilinear or curved and the weakening can be designed such that it extends around the entire circumference or parts of the circumference of the respective pouch in the case of the pouch which is produced from the flexible packaging material.
  • the area of weakening on the bag according to the invention is covered with a film-forming mass.
  • 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 be coated with the film-forming composition in the area of the weakening, but such a bag is advantageously completely coated with the film-forming composition.
  • the film-forming mass in particular represents the printing on the bag.
  • the film-forming mass is thicker in the area of the weakening than in the remaining area of the bag.
  • the film-forming mass can be one layer or a plurality, for example two, three, four, five, six, etc. layers, of film-forming masses.
  • the film-forming mass covers and closes the previously applied weakening and restores tensile strength to the packaging material in the weakening area.
  • 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 composition 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 .
  • lacquer paints made from volatile constituents, such as solvents, and non-volatile constituents, such as film formers, resins, plasticizers, auxiliaries, dyes, pigments, fillers, etc.
  • Printing inks are preferred as film-forming compositions, containing dyes or pigments, solvents, fillers, other additives and binders.
  • Resins, varnishes, nitrocellulose, polyamides, vinyl resins, rosins, rosin resins, maleate resins, shellac etc. are advantageous as binders.
  • the paint colors are in particular printing inks and can be printed on the weakened flexible packaging material by means of a printing machine.
  • the printing not only represents the film-forming mass, but also the decorative, and occasionally also informative, printing for the bags.
  • the printing on the packaging material can be applied on the outside of a bag or on the inside facing side or on both sides.
  • substances can also be converted into a plastic form, such as softened or melted, and applied as a film to the packaging material, on the outside of a bag or on the inside or on both sides.
  • the film-forming composition can be applied by an extrusion coating.
  • suitable extrusion coatings are polyolefins, such as polyethylenes or polypropylenes, or materials containing polyvinyl chloride.
  • Hot-melt coating compositions are also included with film-forming compositions.
  • film-forming compositions are, for example, solid, viscoelastic or viscoplastic materials at normal temperature, preferably based on resins, waxes, thermoplastics and elastomers, if appropriate with the addition of fillers, antioxidants, lubricants and the like, which are tough when heated after passing through a thermoplastic area - or melt thin melts.
  • the film formation on the packaging material by means of the film-forming compositions can also be carried out using chemically drying paints.
  • the chemically dried paints contain cross-linked macromolecules, which are obtained by chemical reaction and in particular by polymerisation.
  • the film-forming compositions can also be films, in particular low tear strength or high brittleness.
  • the thicknesses of the foils can e.g. from 5 to 20 ⁇ m.
  • Preferred films can contain polyolefins, such as polyethylenes or polypropylenes, polyesters or polyamides.
  • the foils can be attached to the packaging material, on the outside of a bag or on the inward-facing side or on both sides, the adhesion of the foil or foils to the packaging material by means of laminating adhesive and / or adhesion promoters, if appropriate with additional use of corona, flame, plasma or ozone treatment.
  • the film can have sealing properties, in particular when used on the side pointing inwards on the bag. The film then simultaneously represents a sealing layer.
  • the film can also be arranged on the packaging material as a further film-forming mass above the printing varnish.
  • film-forming compounds are applied to the outside and the inside of the packaging material, these can be the same or different.
  • the materials of the film-forming compositions are expediently physiologically harmless and approved for food packaging.
  • sealing waxes e.g. from polyolefins, such as polyethylenes, which are applied to the printing ink.
  • the film-forming composition is preferably on the side facing outward on the bag.
  • the film-forming composition can also be applied to the side facing inwards on the bag. It can e.g. is the ink of a counterprint.
  • a further film-forming compound in the form of a sealing wax can be arranged on the printing ink of the reverse printing.
  • the packaging material can also have 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.
  • the method can advantageously be carried out in such a way that a weakening is applied to the flexible packaging material and the weakening is then covered by at least one film-forming compound.
  • the above-mentioned lacquers, printing inks, extrusion layers, hot-melt compositions and etc. can be used as film-forming compositions.
  • it is liquid or melted paint systems.
  • the film-forming compositions can be applied, for example, by centrifuging, spinning, flooding, pouring, rolling, spraying, brushing, printing, extruding, etc.
  • the flexible packaging materials are continuous material, which is why coating processes such as extrusion, spraying, rolling, printing or casting are particularly suitable.
  • the flexible packaging material is provided with the weakenings in a printing unit and then the printing is carried out with printing varnishes as a film-forming composition.
  • the flexible packaging material is fed into a printing press, for example into a high-pressure, gravure, offset printing and in particular flexographic printing press.
  • printing machines are front printing units, multi-cylinder, single-cylinder, in-line, flexo and vario printing machines or combinations thereof, such as flexo and gravure printing machines.
  • the weakening is expediently applied to the flexible packaging material by a cutting mechanism, advantageously in the area of the printing cylinder, before the start of printing, or in the case of multi-cylinder machines in the area of the first printing cylinder.
  • the flexible Provide the packaging material with the intended print, whereby the weakening is also overprinted and the printing varnish closes the weakening.
  • the printing varnish is carried out, for example, in such a way that the total thickness of the printing varnish is greater in the area of the weakening than in the remaining area of the flexible packaging material.
  • the printing processes can be carried out with dimensional accuracy and, in addition to a clean print image, the weakening and the area around the weakening can in particular be precisely affected by the printing varnish.
  • Existing bags made of flexible packaging material can be used to pack food in powdery to solid consistency.
  • a preferred use is in the packaging of bars made of chocolate, starchy foods, fatty foods, or food preparations in the form of mixtures of chocolate with starch and / or fatty foods, all food preparations advantageously in the form of bars.
  • the packaging of chocolate bars and the like is preferred, since in the case of the tearing process the chocolate bar serves as a repository for tearing open the bag.
  • the bags are produced from tubular material, the bags each have a transverse seam seal at the end or, if the bags are produced from 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 weakening is advantageously 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.
  • Tubular bags with a longitudinal seam seal and terminal transverse seam seals are particularly preferred. If the bag is torn open along the weakening, the tear continues up to a maximum of the entire circumference of the bag, although the longitudinal seam sealing prevents tearing. The kinked end piece of the bag remains attached to the longitudinal seam and the longitudinal seam seal. The contents of the bag can now be easily pushed out or consumed directly from the packaging, the broken piece of bag remaining connected to the remaining bag via the longitudinal seam and not forming a piece of bag to be disposed of individually or falling onto the floor.
  • 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 state.
  • FIG. 6 shows a section through the packaging material in the area of a weakening.
  • the packaging material 10 which is already provided with the weakenings and, for example, a varnish over the weakenings in the form of a multi-color print, is unwound from a supply roll and fed to the packaging process.
  • the arrow 11 indicates the filling material insertion and the longitudinal seam sealing 12 and the transverse seam sealing 13 are carried out continuously with the filling material insertion, a packing unit 14 being created in each case.
  • 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.
  • the dot-dash line 18 indicates the weakening, which is located in the region of one end of the tubular bag 16 and is covered, for example, with a printing varnish.
  • FIGS. 3 and 4 show a further tubular bag 16 with the transverse seams 17 at both ends and the longitudinal seam 19.
  • the weakening 18 which is located under the print pattern produced by means of printing varnish, is shown in broken lines. If the pack is stressed, for example by gripping the pack at the transverse seams 17 and pulling it apart, the pack separates along the weakening 18 and pulling and, for example, simultaneous folding, tears the film material 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 has arisen due to the folding and sealing.
  • the tubular bag 16 is thus opened along its circumference, except for the area of the longitudinal seam 19, and the contents can be easily removed, for example by pushing it out from the end.
  • 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 a torn shape.
  • the kinked bag part 27 is connected to the rest of the tubular bag 16 via the packaging material of the longitudinal seam 19.
  • 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 consumed directly from the package.
  • 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.
  • the plastic film 21 is on the side facing outward on the bag a multi-layer, usually multi-colored, print with the printing varnishes 23, 24 and 25 attached.
  • an additional layer of a printing varnish 24 was applied in the area of the weakening 18, as a result of which the total thickness of the printing varnish layer increased compared to the rest of the packaging material 10 and the weakening was securely covered, sealed and the packaging material 10 was given a tensile strength again.
  • the packaging material 10 can be provided with a sealing layer 22, in particular a sealing wax, on the side facing inwards on the bag. Sealing varnish 22 is used primarily for later sealing of the seams, but can support the effect of printing varnish 23, 24, 25.

Abstract

The tear-off part is formed by a weaker part, in the form of a perforation or separation in the packaging material and extending over all or part of the bag periphery. The weaker part is covered with at least one film-forming mass. After packaging, the contents of the bag are protected. The contents are removed by breaking the covering film-forming mass by pulling or bending it. The film-forming mass is thicker near the weak part then in the rest of the bag.

Description

Vorliegende Erfindung betrifft mit filmbildenden Massen beschichtete Beutel aus flexiblem Verpackungsmaterial mit einer Aufreisszone.The present invention relates to bags made of flexible packaging material with a tear zone and coated with film-forming compositions.

Es ist bekannt Nahrungsmittel in Beutel, wie Schlauchbeutel, einzufüllen und den Beutel durch Siegelung zu verschliessen. Die Entnahme des Beutelinhaltes kann beispielsweise durch Aufreissen des Schlauchbeutels erfolgen. Je nach Art des Verpackungsmaterials kann sich der Aufreissvorgang schwierig gestalten. Insbesondere flexible Verpackungsmaterialien aus dehnbaren oder zähen Kunststoffen lassen sich nur schlecht aufreissen und der Inhalt entnehmen. Deshalb wird sehr oft an einer Siegelnaht eine Anreisshilfe eingestanzt. Damit gelingt es allenfalls den Beutel zu öffnen, dessen Inhalt lässt sich jedoch sehr oft nicht sauber entnehmen oder es muss über die Anreisshilfe hinaus der Beutel weiter aufgerissen werden, was sich für den Verbraucher sehr oft mühsam gestaltet. Es ist auch schon vorgeschlagen worden, beispielsweise Schlauchbeutel mit einem Aufreissstreifen zu versehen. Dieser Aufreissstreifen kann über den Umfang des Beutels abgezogen werden, wobei sich das Verpackungsmaterial teilt und somit den Beutel geöffnet ist. Dies ist jedoch ein sehr aufwendiges Verfahren, da der Aufreissstreifen im Schichtaubau des Verpackungsmaterials eingebaut werden muss.It is known to fill foods into bags, such as tubular bags, and to seal the bag by sealing. The contents of the bag can be removed, for example, by tearing open the tubular bag. Depending on the type of packaging material, the tearing process can be difficult. In particular, flexible packaging materials made from stretchy or tough plastics are difficult to tear open and the contents removed. This is why a scribing aid is very often stamped on a sealed seam. At most, it is possible to open the bag, however, the contents of which can very often not be removed cleanly, or the bag has to be torn open beyond the scribing aid, which is often very difficult for the consumer. It has also already been proposed to provide, for example, tubular bags with a tear strip. This tear strip can be pulled off over the circumference of the bag, the packaging material dividing and the bag thus being opened. However, this is a very complex process because the tear strip has to be installed in the layered packaging of the packaging material.

Aufgabe vorliegender Erfindung ist es einen Beutel zur Verfügung zu stellen, der eine an beliebiger Stelle und vorteilhaft in einem Randbereich, anbringbare Aufreisshilfe enthält und der Beutel leicht geöffnet werden kann, wobei der Inhalt des Beutels derart freigegeben wird, dass der Inhalt ohne weitere Öffnungsmanipulationen entnommen werden kann.The object of the present invention is to provide a bag which contains a tear-open aid which can be attached at any point and advantageously in an edge region and the bag can be opened easily, the contents of the bag being released in such a way that the contents are removed without further manipulation of the opening can be.

Erfindungsgemäss wird das dadurch erreicht, dass die Aufreisszone eine Schwächung im Verpackungsmaterial ist und der Bereich der Schwächung mit einer filmbildenden Masse überdeckt ist und nach dem Verpackungsvorgang ein Inhalt durch den Beutel geschützt ist und zur Entnahme des Inhaltes des Beutels eine Zieh- oder Knickbewegung die überdeckende filmbildende Masse aufbricht und der Beutel den Inhalt freigibt.According to the invention this is achieved in that the tear zone is a weakening in the packaging material and the area of the weakening is covered with a film-forming mass and after the packaging process a content is protected by the bag and a pulling or kinking movement to remove the content of the bag overlaps the overlapping one film-forming mass breaks open and the bag releases the contents.

Als Beutel nach vorliegender Erfindung werden beispielsweise Flachbeutel, Siegelrandbeutel, Raumbeutel oder Schlauchbeutel verstanden. Bevorzugt sind Siegelrandbeutel und Schlauchbeutel.Bags according to the present invention are understood to mean, for example, flat bags, sealed edge bags, space bags or tubular bags. Sealed edge bags and tubular bags are preferred.

Als flexibles Verpackungsmaterial, auch Packstoffe, Packmittel, Verpackungsfolien etc. genannt, können im wesentlichen alle bekannten flexiblen Verpackungsmaterialien verwendet werden. Die Verpackungsmaterialien sollen maschinengängig sein, d.h. für die Verwendung auf Verpackungsmaschinen geeignet sein. Zu den Verpackungsmaterialien gehören solche aus Papier, gegebenenfalls mit Sperrschichten und/oder mit Kunststoffen kaschiert oder aus Zellglas oder Verpackungsmaterialien enthaltend Aluminiumfolien, wie mit Siegelschichten und fallweise weiteren Kunststoffschichten versehene Aluminiumfolien oder Verpackungsmaterialien aus Kunststoff-Folien oder aus Kunststoff-Folien, die ein- oder beidseitig mit Papier oder Metallfolien beschichtet sind oder Verpackungsmaterialien aus Kunststoffen, die eine Sperrschicht wie eine Kunststoffsperrschicht, keramische Sperrschicht oder eine metallische Sperrschicht enthalten.Essentially all known flexible packaging materials can be used as flexible packaging material, also called packaging materials, packaging materials, packaging films, etc. will. The packaging materials should be machine-compatible, ie suitable for use on packaging machines. The packaging materials include those made of paper, optionally laminated with barrier layers and / or with plastics, or made of cellophane or packaging materials containing aluminum foils, such as aluminum foils provided with sealing layers and occasionally further plastic layers, or packaging materials made of plastic foils or of plastic foils which contain or are coated on both sides with paper or metal foils or plastic packaging materials that contain a barrier layer such as a plastic barrier layer, ceramic barrier layer or a metallic barrier layer.

Als Kunststoffe können beispielsweise Polyolefine, wie Polyethylene oder Polypropylene, Polyamide, Polyvinylchlorid oder Polyester usw., jeweils als Monofolie oder als Folienverbund oder unter Verwendung verschiedener Kunststoffe im Verbund als mehrschichtige Folienverbunde verwendet werden. Zwischen wenigstens zwei Schichten können Sperrschichten wie z.B. Ethylvinylalkoholsperrschichten, oder keramische resp. glasartige oder metallische Sperrschichten angeordnet sein. Die Kunststoff-Folien oder Folien-Verbunde können eine Dicke von beispielsweise 10 bis 100 µm, vorzugsweise 30 bis 50 µm, aufweisen.Examples of plastics which can be used are polyolefins, such as polyethylenes or polypropylenes, polyamides, polyvinyl chloride or polyester, etc., in each case as a monofilm or as a film composite or, using different plastics, as a multilayer film composite. Barrier layers such as e.g. Ethyl vinyl alcohol barrier layers, or ceramic resp. glass-like or metallic barrier layers may be arranged. The plastic films or film composites can have a thickness of, for example, 10 to 100 μm, preferably 30 to 50 μm.

Das Verpackungsmaterial kann ein- oder beidseitig, vorzugsweise auf der beim daraus hergestellten Beutel nach innen gerichteten Seite mit einer Siegelschicht beispielsweise einem Siegellack oder einer Siegelfolie aus z.B. Polyolefinen, wie Polyethylenen, beschichtet sein. Beispielsweise für undurchlässige heissgesiegelte Beutel ist eine Siegelschicht enthaltend 6 bis 7 g/m2 Siegellack ausreichend.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 polyethylenes. For example, for impermeable heat-sealed bags, a sealing layer containing 6 to 7 g / m 2 sealing wax is sufficient.

Das Verpackungsmaterial wird vorteilhaft als Endlos- oder Rollenware angewendet.The packaging material is advantageously used as continuous or roll goods.

Am Verpackungsmaterial wird im Bereich der für den Beutel vorgesehenen Aufreisszone eine Schwächung angebracht. Die Schwächung des Verpackungsmaterials kann mechanisch, beispielsweise durch Schneidmesser, chemisch, z.B. durch Lösungsmittel, thermisch, z.B. durch Laserstrahlen, in Form einer Durchtrennung, einer Perforation, einer Kerbung usw. vorgenommen werden. Bevorzugt wird die Durchtrennung. Die Schwächung kann geradlinig oder gebogen sein und die Schwächung kann derart ausgestaltet sein, dass sie sich beim Beutel, der aus dem flexiblen Verpackungsmaterial hergestellt wird um den ganzen Umfang oder Teile des Umfangs des jeweiligen Beutels erstreckt.A weakening is applied to the packaging material in the area of the tear zone provided for the bag. The weakening of the packaging material can be mechanical, e.g. by cutting knives, chemical, e.g. by solvent, thermally, e.g. by laser beams, in the form of a cut, a perforation, a notch, etc. The severing is preferred. The weakening can be rectilinear or curved and the weakening can be designed such that it extends around the entire circumference or parts of the circumference of the respective pouch in the case of the pouch which is produced from the flexible packaging material.

Der Bereich der Schwächung am erfindungsgemässen Beutel ist mit einer filmbildenden Masse überdeckt. Mit Bereich der Schwächung wird nicht nur die Schwächung selbst sondem auch die angrenzenden Teile des Verpackungsmaterials, beispielsweise der Bereich zwischen 2 und 20 mm, vorzugsweise 5 und 10 mm, angrenzend an die Schwächung, verstanden.The area of weakening on the bag according to the invention is covered with a film-forming mass. With 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.

Der erfindungsgemäse Beutel kann nur im Bereich der Schwächung mit der filmbildenden Masse beschichtet sein, vorteilhaft ist ein solcher Beutel jedoch vollständig mit der filmbildenden Masse beschichtet. Die filmbildende Masse stellt insbesondere die Bedruckung des Beutels dar.The bag according to the invention can only be coated with the film-forming composition in the area of the weakening, but such a bag is advantageously completely coated with the film-forming composition. The film-forming mass in particular represents the printing on the bag.

In vorteilhafter Ausführungsform ist die filmbildende Masse im Bereich der Schwächung dicker als im übrigen Bereich des Beutels. Bei der filmbildenden Masse kann es sich um eine Schicht oder auch eine Mehrzahl, beispielsweise zwei, drei, vier, fünf, sechs usw. Schichten, von filmbildenden Massen handeln. Die filmbildende Masse überdeckt und verschliesst die vorgänig angebrachte Schwächung und verleiht dem Verpackungsmaterial im Bereich der Schwächung wieder eine Zugfestigkeit.In an advantageous embodiment, the film-forming mass is thicker in the area of the weakening than in the remaining area of the bag. The film-forming mass can be one layer or a plurality, for example two, three, four, five, six, etc. layers, of film-forming masses. The film-forming mass covers and closes the previously applied weakening and restores tensile strength to the packaging material in the weakening area.

Die filmbildende Masse, oder bei der Anwendung von mehreren übereinanderliegenden Schichten von filmbildenden Massen die Gesamtmenge, kann vorteilhaft im Bereich der Schwächung in Mengen von 2 bis 8 g/m2 , zweckmässig 3 bis 6 g/m2 und vorteilhaft 3,5 bis 5 g/m2 aufgebracht sein. Ausserhalb des Bereiches der Schwächungen kann die filmbildende Masse beispielsweise in Mengen von 1 bis 7 g/m2, zweckmässig 1 bis 5 g/m2 und vorteilhaft 1 bis 4 g/m2 aufgebracht sein.The film-forming mass, or the total amount when using a plurality of layers of film-forming masses lying one above the other, 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 composition 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 .

Zur Erzeugung einer filmbildenden Masse können beispielsweise Lackfarben aus flüchtigen Bestandteilen, wie Lösemitteln, und nichtflüchtigen Bestandteilen, wie Filmbildner, Harzen, Weichmachern, Hilfsstoffen, Farbstoffen, Pigmenten, Füllstoffen etc. angewendet werden. Bevorzugt sind Druckfarben als filmbildende Massen, enthaltend Farbstoffe oder Pigmente, Lösemittel, Füllstoffe, weitere Zusätze und Bindemittel. Vorteilhaft als Bindemittel sind Harze, Firnisse, Nitrocellulose, Polyamide, Vinylharze, Kolophoniumharze, Maleinatharze, Schellack usw. Die Lackfarben stellen insbesondere Druckfarben dar und können mittels einer Druckmaschine als Bedruckung auf das vorgeschwächte flexible Verpackungsmaterial aufgedruckt werden. Die Bedruckung stellt nicht nur die filmbildende Masse dar, sondern gleichzeitig auch die dekorative, und fallweise auch informative, Bedruckung für die Beutel. Die Bedruckung auf dem Verpackungsmaterial kann auf der an einem Beutel nach aussen oder auf der nach innen weisenden Seite oder auf beiden Seiten, angebracht werden.To produce a film-forming composition, it is possible, for example, to use lacquer paints made from volatile constituents, such as solvents, and non-volatile constituents, such as film formers, resins, plasticizers, auxiliaries, dyes, pigments, fillers, etc. Printing inks are preferred as film-forming compositions, containing dyes or pigments, solvents, fillers, other additives and binders. Resins, varnishes, nitrocellulose, polyamides, vinyl resins, rosins, rosin resins, maleate resins, shellac etc. are advantageous as binders. The paint colors are in particular printing inks and can be printed on the weakened flexible packaging material by means of a printing machine. The printing not only represents the film-forming mass, but also the decorative, and occasionally also informative, printing for the bags. The printing on the packaging material can be applied on the outside of a bag or on the inside facing side or on both sides.

Als filmbildende Masse können auch Stoffe in eine plastische Form überführt, wie erweicht oder geschmolzen und auf dem Verpackungsmaterial, auf der an einem Beutel nach aussen oder auf der nach innen weisenden Seite oder auf beiden Seiten, als Film aufgetragen werden.As a film-forming material, substances can also be converted into a plastic form, such as softened or melted, and applied as a film to the packaging material, on the outside of a bag or on the inside or on both sides.

Die filmbildende Masse kann durch eine Extrusionsbeschichtung, aufgebracht werden. Zur Extrusionsbeschichtung eignen sich beipielsweise Polyolefine, wie Polyethylene oder Polypropylene, oder Polyvinylchlorid enthaltende Materialien.The film-forming composition can be applied by an extrusion coating. Examples of suitable extrusion coatings are polyolefins, such as polyethylenes or polypropylenes, or materials containing polyvinyl chloride.

Mit filmbildenden Massen sind auch Beschichtungen mittels Heisschmelzmassen, auch Hotmelt-Beschichtungsmassen genannt, umfasst. Es sind dies beispielsweise bei normaler Temperatur feste, viskoelastische oder viskoplastische Werkstoffe, vorzugsweise auf Basis von Harzen, Wachsen, Thermoplasten und Elastomeren, ggf. mit Zusatz von Füllstoffen, Antioxidantien, Gleitmitteln und dergl., die beim Erwärmen nach Durchlaufen eines thermoplatischen Bereiches in zäh- bzw. dünnflüssige Schmelzen übergehen.Coatings by means of hot-melt compositions, also called hot-melt coating compositions, are also included with film-forming compositions. These are, for example, solid, viscoelastic or viscoplastic materials at normal temperature, preferably based on resins, waxes, thermoplastics and elastomers, if appropriate with the addition of fillers, antioxidants, lubricants and the like, which are tough when heated after passing through a thermoplastic area - or melt thin melts.

Die Filmbildung auf dem Verpackungsmaterial mittels der filmbildenden Massen kann auch durch chemisch trocknende Anstrichmittel erfolgen. Die chemisch getrockneten Anstrichmittel enthalten vernetzte Makromoleküle, die durch chemische Reaktion und dabei im besonderen durch Polymersation erhalten werden.The film formation on the packaging material by means of the film-forming compositions can also be carried out using chemically drying paints. The chemically dried paints contain cross-linked macromolecules, which are obtained by chemical reaction and in particular by polymerisation.

Die filmbildenden Massen können auch Folien, insbesondere geringer Reisskraft oder hoher Sprödigkeit, sein. Die Dicken der Folien können z.B. von 5 bis 20 µm sein. Bevorzugte Folien könne Polyolefine, wie Polyethylene oder Polypropylene, Polyester oder Polyamide enthalten. Die Folien können an dem Verpackungsmaterial, auf der an einem Beutel nach aussen oder auf der nach innen weisenden Seite oder auf beiden Seiten, angebracht werden, wobei die Haftung der Folie oder der Folien am Verpackungsmaterial durch Kaschierkleber und/oder Haftvermittler, gegebenenfalls unter zusätzlicher Anwendung von Korona-, Flamm-, Plasma- oder Ozonbehandlung, erfolgen kann. Beispielsweise kann die Folie, insbesondere bei der Anwendung auf der am Beutel nach innen weisenden Seite, Siegeleigenschaften aufweisen. Die Folie stellt dann gleichzeitig eine Siegelschicht dar. Die Folie kann auch, als eine weitere filmbildende Masse über dem Drucklack auf dem Verpackungsmaterial angeordnet sein.The film-forming compositions can also be films, in particular low tear strength or high brittleness. The thicknesses of the foils can e.g. from 5 to 20 µm. Preferred films can contain polyolefins, such as polyethylenes or polypropylenes, polyesters or polyamides. The foils can be attached to the packaging material, on the outside of a bag or on the inward-facing side or on both sides, the adhesion of the foil or foils to the packaging material by means of laminating adhesive and / or adhesion promoters, if appropriate with additional use of corona, flame, plasma or ozone treatment. For example, the film can have sealing properties, in particular when used on the side pointing inwards on the bag. The film then simultaneously represents a sealing layer. The film can also be arranged on the packaging material as a further film-forming mass above the printing varnish.

Falls auf der nach aussen und der nach innen weisenden Seite des Verpackungsmaterials filmbildende Massen angebracht werden, können diese gleich oder verschieden sein.If film-forming compounds are applied to the outside and the inside of the packaging material, these can be the same or different.

Die Materialien der filmbildenden Massen sind zweckmässig physiologisch unbedenklich und für Lebensmittelverpackung zugelassen.The materials of the film-forming compositions are expediently physiologically harmless and approved for food packaging.

Weitere Beispiele von Anordnungen von filmbildenden Massen auf dem Verpackungsmaterial sind Siegellacke, z.B. aus Polyolefinen, wie Polyethylenen, die auf der Druckfarbe angebracht werden. Die filmbildende Masse befindet sich bevorzugt auf der am Beutel nach aussen gerichteten Seite. Die filmbildende Masse kann auch auf der am Beutel nach innen gerichteten Seite angebracht sein. Es kann sich dabei z.B. um die Druckfarbe eines Konterdruckes handeln. Auf der Druckfarbe des Konterdruckes kann ein weitere filmbildende Masse in Form eines Siegellackes angeordnet sein. Das Verpackungsmaterial kann auch auf der am Beutel nach aussen gerichteten Seite eine Schicht einer filmbildenden Masse, z.B. einen Drucklack, und auf der am Beutel nach innen gerichteten Seite einen Siegellack enthalten.Further examples of arrangements of film-forming masses on the packaging material are sealing waxes, e.g. from polyolefins, such as polyethylenes, which are applied to the printing ink. The film-forming composition is preferably on the side facing outward on the bag. The film-forming composition can also be applied to the side facing inwards on the bag. It can e.g. is the ink of a counterprint. A further film-forming compound in the form of a sealing wax can be arranged on the printing ink of the reverse printing. The packaging material can also have a layer of a film-forming mass, e.g. a printing varnish, and contain a sealing wax on the inside of the bag.

Vorliegende Erfindung betrifft auch ein Verfahren zur Erzeugung eines Beutels nach vorliegender Erfindung. Das Verfahren kann vorteilhaft derart ausgeführt werden, dass am flexiblen Verpackungsmaterial eine Schwächung angebracht wird und anschliessend die Schwächung mittels wenigstens einer filmbildenden Masse überdeckt wird.The present invention also relates to a method for producing a bag according to the present invention. The method can advantageously be carried out in such a way that a weakening is applied to the flexible packaging material and the weakening is then covered by at least one film-forming compound.

Als filmbildende Massen können beispielhaft die oben angeführten Lacke, Druckfarben, Extrusionsschichten, Heissschmelzmassen und usw. angewendet werden. In der Regel handelt es sich um flüssige resp. geschmolzene Lacksysteme. Das Aufbringen der filmbildenden Massen kann beispielsweise durch Zentrifugieren, Schleudern, Fluten, Giessen, Walzen, Sprühen, Aufpinseln, Aufdrucken, Aufextrudieren usw. vorgenommen werden. In der Regel handelt es sich bei den flexiblen Verpackungsmaterialien um Endlosmaterial, weshalb sich Beschichtungsverfahren wie Aufextrudieren, Sprühen, Walzen, Aufdrucken oder Giessen besonders anbieten.The above-mentioned lacquers, printing inks, extrusion layers, hot-melt compositions and etc. can be used as film-forming compositions. As a rule, it is liquid or melted paint systems. The film-forming compositions can be applied, for example, by centrifuging, spinning, flooding, pouring, rolling, spraying, brushing, printing, extruding, etc. As a rule, the flexible packaging materials are continuous material, which is why coating processes such as extrusion, spraying, rolling, printing or casting are particularly suitable.

In einem besonders bevorzugten Verfahren wird das flexible Verpackungsmaterial in einem Druckwerk mit den Schwächungen versehen und anschliessend wird die Bedruckung mit Drucklacken als filmbildende Masse vorgenommen. Bei diesem Verfahren wird das flexible Verpackungsmaterial in eine Druckmaschine beispielsweise in eine Hochdruck-, Tiefdruck-, Offsetdruck- und insbesondere Flexodruck-Druckmaschine geführt. Beispiele von Druckmaschinen sind Vorsatzdruckwerke, Mehrzylinder-, Einzylinder-, In-line-, Flexo- und Variodruckmaschinen oder Kombinationen davon, wie z.B. Flexo- und Tiefdruckmaschinen. Zweckmässig im Bereich des Druckzylinders, vor dem Druckbeginn, oder bei mehrzylindrigen Maschinen im Bereich des ersten Druckzylinders wird die Schwächung vorteilhaft durch ein Schneidwerk am flexiblen Verpackungsmaterial angebracht. Anschließend wird das flexible Verpackungsmaterial mit dem vorgesehenen Druck versehen, wobei auch die Schwä.chung überdruckt wird und der Drucklack die Schwächung verschliesst. Der Drucklackauftrag wird z.B. derart geführt, dass im Bereich der Schwächung die Gesamtdicke des Drucklackes grösser ist als im übrigen Bereich des flexiblen Verpackungsmaterials. Mittels der Registerregelung können die Druckvorgänge massgenau vorgenommen werden und nebst einem sauberen Druckbild kann insbesondere die Schwächung und der Bereich um die Schwächung durch den Drucklack genau getroffen werden.In a particularly preferred method, the flexible packaging material is provided with the weakenings in a printing unit and then the printing is carried out with printing varnishes as a film-forming composition. In this method, the flexible packaging material is fed into a printing press, for example into a high-pressure, gravure, offset printing and in particular flexographic printing press. Examples of printing machines are front printing units, multi-cylinder, single-cylinder, in-line, flexo and vario printing machines or combinations thereof, such as flexo and gravure printing machines. The weakening is expediently applied to the flexible packaging material by a cutting mechanism, advantageously in the area of the printing cylinder, before the start of printing, or in the case of multi-cylinder machines in the area of the first printing cylinder. Then the flexible Provide the packaging material with the intended print, whereby the weakening is also overprinted and the printing varnish closes the weakening. The printing varnish is carried out, for example, in such a way that the total thickness of the printing varnish is greater in the area of the weakening than in the remaining area of the flexible packaging material. Using the register control, the printing processes can be carried out with dimensional accuracy and, in addition to a clean print image, the weakening and the area around the weakening can in particular be precisely affected by the printing varnish.

Vorliegende Beutel aus flexiblem Verpackungsmaterial können zur Verpackung von Nahrungsmitteln in pulvriger bis fester Konsistenz verwendet werden. Eine bevorzugte Verwendung liegt in der Verpackung von Riegeln aus Schokolade, stärkehaltigen Nahrungsmitteln, fetthaltigen Nahrungsmitteln, oder Nahrungsmittelzubereitungen in Form von Gemischen aus Schokolade mit Stärke und/oder fetthaltigen Nahrungsmitteln, alle Nahrungsmittelzubereitungen vorteilhaft in Form von Riegeln.Existing bags made of flexible packaging material can be used to pack food in powdery to solid consistency. A preferred use is in the packaging of bars made of chocolate, starchy foods, fatty foods, or food preparations in the form of mixtures of chocolate with starch and / or fatty foods, all food preparations advantageously in the form of bars.

Die Verpackung von Schokoladeriegeln und dergl. ist bevorzugt, da beim Aufreissvorgang m diesem Falle der Schokoladeriegel als Wiederlager zum knickenden Aufreissen des Beutels dient.The packaging of chocolate bars and the like is preferred, since in the case of the tearing process the chocolate bar serves as a repository for tearing open the bag.

Falls die Beutel aus Schlauchmaterial erzeugt werden, weisen die Beutel endständig jeweils eine Quernahtsiegelung auf oder, falls die Beutel aus flächigem Material erzeugt werden, weisen die Beutel eine Langsnahtsiegelung und endständig je eine Quernahtsiegelung auf. Die Siegelung der Nähte kann durch Kaltsiegelung, Heissiegelung oder durch Kleben erfolgen.If the bags are produced from tubular material, the bags each have a transverse seam seal at the end or, if the bags are produced from 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.

Bei der Verpackung von beispielsweise Schokoladeriegeln befindet sich die Schwächung vorteilhaft in einem der beiden Endbereiche des Beutels, d.h. ca. 10-30 mm vom Beutelende, der mit einer Quersiegelnaht abgeschlossen ist. Besonders bevorzugt sind Schlauchbeutel mit einer Längsnahtsiegelung und endständig Quernahtsiegelungen. Wird der Beutel entlang der Schwächung aufgerissen, so setzt sich der Riss fort bis maximal um den ganzen Beutelumfang herum, wobei die Längsnahtsiegelung ein Weiterreissen jedoch verhindert. An der Längsnaht und der Längsnahtsiegelung bleibt das abgeknickte Endstück des Beutels hängen. Der Beutelinhalt kann nun leicht herausgestossen werden oder direkt aus der Verpackung verzehrt werden, wobei das abgeknickte Beutelstück über die Längsnaht mit dem Restbeutel verbunden bleibt und kein einzeln zu entsorgendes oder auf den Boden fallendes Beutelstück bildet.When packaging chocolate bars, for example, the weakening is advantageously 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. Tubular bags with a longitudinal seam seal and terminal transverse seam seals are particularly preferred. If the bag is torn open along the weakening, the tear continues up to a maximum of the entire circumference of the bag, although the longitudinal seam sealing prevents tearing. The kinked end piece of the bag remains attached to the longitudinal seam and the longitudinal seam seal. The contents of the bag can now be easily pushed out or consumed directly from the packaging, the broken piece of bag remaining connected to the remaining bag via the longitudinal seam and not forming a piece of bag to be disposed of individually or falling onto the floor.

Die Figuren 1 bis 6 erläutern beispielhaft vorliegende Erfindung näher.FIGS. 1 to 6 explain the present invention in more detail by way of example.

Figur 1 zeigt schematisch die Erzeugung eines Schlauchbeutels.Figure 1 shows schematically the production of a tubular bag.

Figur 2 zeigt schematisch die Ansicht eines Schlauchbeutels.Figure 2 shows schematically the view of a tubular bag.

Die Figuren 3, 4 und 5 zeigen einen weiteren Schlauchbeutel von der Vorder- und Rückseite, sowie im aufgerissenen Zustand.Figures 3, 4 and 5 show another tubular bag from the front and back, as well as in the torn state.

Figur 6 zeigt einen Schnitt durch das Verpackungsmaterial im Bereich einer Schwachung.FIG. 6 shows a section through the packaging material in the area of a weakening.

Gemäss Figur 1 wird das Verpackungsmaterial 10, welches bereits mit den Schwächungen und beispielsweise einer Überlackierung über den Schwächungen in Form eines Mehrfarbendruckes versehen ist, von einer Vorratsrolle abgerollt und dem Verpackungsvorgang zugeführt. Der Pfeil 11 deutet den Füllguteinschub an und mit dem Füllguteinschub wird fortlaufend die Längsnahtsiegelung 12 und die Quernahtsiegelung 13 vorgenommen, wobei jeweils eine Packungseinheit 14 entsteht. Eine Schneidvorrichtung 15 teilt das Material in Schlauchbeutel 16 mit den Quernähten 17 und der Längsnaht 19.According to FIG. 1, the packaging material 10, which is already provided with the weakenings and, for example, a varnish over the weakenings in the form of a multi-color print, is unwound from a supply roll and fed to the packaging process. The arrow 11 indicates the filling material insertion and the longitudinal seam sealing 12 and the transverse seam sealing 13 are carried out continuously with the filling material insertion, a packing unit 14 being created in each case. A cutting device 15 divides the material into tubular bags 16 with the transverse seams 17 and the longitudinal seam 19.

In Figur 2 ist der Schlauchbeutel 16 abgebildet. Die Langsnaht 19 befindet sich auf der Rückseite und beidends ist der Schlauchbeutel 16 mit Quernähten 17 verschlossen. Strichpunktiert ist die Schwächung 18 angedeutet, welche sich im Bereich eines Endes des Schlauchbeutels 16 befindet und mit beispielsweise einem Drucklack überdeckt ist.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. The dot-dash line 18 indicates the weakening, which is located in the region of one end of the tubular bag 16 and is covered, for example, with a printing varnish.

Die Figuren 3 und 4 zeigen einen weiteren Schlauchbeutel 16 mit den Quernähten 17 an beiden Enden und der Längsnaht 19. In Figur 4 ist die Schwächung 18, welche sich unter dem mittels Drucklack erzeugten Druckmusters befindet, strichpunktiert eingezeichnet. Wird die Packung, beispielsweise durch Ergreifen der Packung an den Quernähten 17 und durch Auseinanderziehen auf Zug beansprucht, so trennt sich die Packung entlang der Schwächung 18 auf und durch Ziehen und beispielsweise gleichzeitiges Umknicken reisst das Folienmaterial weiter, in der Regel entlang einer Reisslinie 20, welche punktiert in Figur 3 eingezeichnet ist. Die Reisslinie 20 endet an der Längsnaht 19, da dort eine Materialanhäufung resp. Materialverdickung durch die Umfaltung und Siegelung entstanden ist. Damit ist der Schlauchbeutel 16 entlang seines Umfanges, bis auf den Bereich der Längsnaht 19 geöffnet und der Inhalt kann leicht entnommen werden, beispielsweise durch Herausstossen vom Ende her. Die beiden Teile des Schlauchbeutels 16 halten mit der Längsnaht 19 zusammen und können dann gemeinsam entsorgt werden.FIGS. 3 and 4 show a further tubular bag 16 with the transverse seams 17 at both ends and the longitudinal seam 19. In FIG. 4, the weakening 18, which is located under the print pattern produced by means of printing varnish, is shown in broken lines. If the pack is stressed, for example by gripping the pack at the transverse seams 17 and pulling it apart, the pack separates along the weakening 18 and pulling and, for example, simultaneous folding, tears the film material 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 has arisen due to the folding and sealing. The tubular bag 16 is thus opened along its circumference, except for the area of the longitudinal seam 19, and the contents can be easily removed, for example by pushing it out from the end. The two parts of the tubular bag 16 hold together with the longitudinal seam 19 and can then be disposed of together.

Figur 5 zeigt den Schlauchbeutel 16 mit den Quernähten 17 und der Längsnaht 19 in aufgerissener Form. Der abgeknickte Beutelteil 27 ist über das Verpackungsmaterial der Längsnaht 19 mit dem Rest des Schlauchbeutels 16 verbunden. Das Aufreissen erfolgte entlang der Schwächung 18 und setzte sich fort über die Reisslinie 20 bis zur Längsnaht 19. Der Inhalt 26, z.B. ein Schokoladeriegel, des Schlauchbeutels 16 kann nun leicht entnommen oder direkt aus der Packung heraus verzehrt werden.Figure 5 shows the tubular bag 16 with the transverse seams 17 and the longitudinal seam 19 in a torn shape. The kinked bag part 27 is connected to the rest of the tubular bag 16 via the packaging material of the longitudinal seam 19. 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 consumed directly from the package.

Die Figur 6 zeigt einen Schnitt durch das Verpackungsmaterial 10 im Bereich der Schwächung 18. Die Schwächung 18 wurde beispielsweise an einer Kunststoffolie 21 vorgenommen und die Schwächung 18 stellt eine Durchtrennung der Kunststoffolie dar. Auf der Kunststoffolie 21 ist auf der am Beutel nach aussen zeigenden Seite ein mehrlagiger, in der Regel mehrfarbiger, Druck mit den Drucklacken 23, 24 und 25 angebracht. Bei der Gestaltung des Druckbildes wurde im Bereich der Schwächung 18 eine zusätzliche Schicht eines Drucklackes 24 aufgebracht, wodurch sich die Gesamtdicke der Drucklackschicht gegenüber dem Rest des Verpackungsmaterials 10 erhöht und die Schwächung sicher abgedeckt, verschlossen und dem Verpackungsmaterial 10 wieder eine Zugfestigkeit verliehen wird. Fallweise kann das Verpackungsmaterial 10 auf der am Beutel nach innen weisenden Seite eine Siegelschicht 22, insbesondere ein Siegellack, angebracht sein. Der Siegellack 22 dient vornehmlich zur späteren Siegelung der Nahte, kann aber den Drucklack 23, 24, 25 in seiner Wirkung unterstützen.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. The plastic film 21 is on the side facing outward on the bag a multi-layer, usually multi-colored, print with the printing varnishes 23, 24 and 25 attached. When designing the print image, an additional layer of a printing varnish 24 was applied in the area of the weakening 18, as a result of which the total thickness of the printing varnish layer increased compared to the rest of the packaging material 10 and the weakening was securely covered, sealed and the packaging material 10 was given a tensile strength again. In some cases, the packaging material 10 can be provided with a sealing layer 22, in particular a sealing wax, on the side facing inwards on the bag. Sealing varnish 22 is used primarily for later sealing of the seams, but can support the effect of printing varnish 23, 24, 25.

Claims (12)

Mit filmbildenden Massen beschichtete Beutel aus flexiblem Verpackungsmaterial mit einer Aufreisszone,
dadurch gekennzeichnet, dass
dass die Aufreisszone eine Schwächung im Verpackungsmaterial ist und der Bereich der Schwächung mit wenigstens einer filmbildenden Masse überdeckt ist und nach dem Verpackungsvorgang ein Inhalt durch den Beutel geschützt ist und zur Entnahme des Inhaltes des Beutels eine Zieh- oder Knickbewegung die überdeckende filmbildende Masse aufbricht und der Beutel den Inhalt freigibt.Bags made of flexible packaging material with a tear zone, coated with film-forming compositions,
characterized in that
that the tear zone is a weakening in the packaging material and the area of the weakening is covered with at least one film-forming mass and after the packaging process a content is protected by the pouch and a pulling or kinking movement to remove the contents of the pouch breaks up the covering film-forming mass and that Bag releases the contents. Beutel nach Anspruch 1, dadurch gekennzeichnet dass die filmbildende Masse oder die filmbildende Massen im Bereich der Schwächung dicker ist, als im übrigen Bereich des Beutels.A bag according to claim 1, characterized in that the film-forming mass or the film-forming masses is thicker in the area of the weakening than in the remaining area of the bag. Beutel nach Anspruch 1, dadurch gekennzeichnet, dass die filmbildende Masse oder die filmbildenden Massen im Bereich der Schwächung in Mengen von 2 bis 8 g/m2, zweckmässig 3 bis 6 g/m2 und vorteilhaft 3,5 bis 5 g/m2 aufgebracht ist.Bag according to claim 1, characterized in that the film-forming mass or the film-forming masses in the region of the weakening in amounts of 2 to 8 g / m 2 , advantageously 3 to 6 g / m 2 and advantageously 3.5 to 5 g / m 2 is applied. Beutel nach Anspruch 1, dadurch gekennzeichnet, dass die Schwächung eine Perforation oder eine Durchtrennung ist und die Schwächung sich über einen ganzen Umfang oder einen Teilbereich des Umfanges des Beutels erstreckt.A bag according to claim 1, characterized in that the weakening is a perforation or a cut and the weakening extends over an entire circumference or a partial area of the circumference of the pouch. Beutel nach Anspruch 1, dadurch gekennzeichnet, dass die Schwächung über dem Beutelinhalt in einem Randbereich angebracht ist.Bag according to claim 1, characterized in that the weakening is applied over the contents of the bag in an edge region. Beutel nach Anspruch 1, dadurch gekennzeichnet, dass das Verpackungsmaterial wenigstens eine filmbildende Masse in Form einer Bedruckung mittels Lackfarben, vorzugsweise am Beutel gegen die Aussenseite gerichtet, enthält.A bag according to claim 1, characterized in that the packaging material contains at least one film-forming composition in the form of printing by means of lacquer colors, preferably on the bag directed towards the outside. Beutel nach Anspruch 1, dadurch gekennzeichnet, dass das Verpackungsmaterial wenigstens eine Siegelschicht, vorzugsweise eine gegen die Beutelinnenseite gerichtete Siegelschicht enthält.A bag according to claim 1, characterized in that the packaging material contains at least one sealing layer, preferably a sealing layer directed against the inside of the bag. Beutel nach Anspruch 1, dadurch gekennzeichnet, dass der Beutel endständig Quernahtsiegelungen aufweist oder dass der Beutel eine Längsnahtsiegelung und endständig Quernahtsiegelungen aufweistA bag according to claim 1, characterized in that the bag has transverse seam seals at the end or that the bag has a longitudinal seam seal and terminally transverse seam seals Verfahren zur Herstellung eines Beutel nach Anspruch 1,
dadurch gekennzeichnet, dass
an dem flexiblen Verpackungsmaterial eine Schwächung angebracht wird und die Schwächung mittels wenigstens einer fimbildenden Masse überschichtet wird.A method of making a bag according to claim 1,
characterized in that
a weakening is applied to the flexible packaging material and the weakening is overlaid by means of at least one film-forming mass. Verfahren nach Anspruch 9 dadurch gekennzeichnet, dass am flexiblen Verpackungsmaterial in einer Druckmaschine die Schwächung angebracht und die Schwächung durch Bedrucken mittels wenigstens einer Drucklackschicht in der Druckmaschie überschichtet wird.A method according to claim 9, characterized in that the weakening is applied to the flexible packaging material in a printing press and the weakening is overlaid by printing by means of at least one printing lacquer layer in the printing press. Verwendung des Beutels nach Anspruch 1 zur Verpackung von Nahrungsmitteln in pulveriger bis fester Konsistenz.Use of the bag according to claim 1 for packaging food in powdery to solid consistency. Verwendung des Beutels nach Anspruch 11 zur Verpackung von Riegeln aus Schokolade, stärkehaltigen Nahrungsmitteln, fetthaltigen Nahrungsmitteln oder Gemischen von Schokolade mit stärke- und/oder fetthaltigen Nahrungsmitteln.Use of the bag according to claim 11 for packaging bars made of chocolate, starchy foods, fatty foods or mixtures of chocolate with starchy and / or fatty foods.
EP96810308A 1996-05-15 1996-05-15 A bag made of a flexible packing material Expired - Lifetime EP0807587B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP96810308A EP0807587B1 (en) 1996-05-15 1996-05-15 A bag made of a flexible packing material
DK96810308T DK0807587T3 (en) 1996-05-15 1996-05-15 Bag of flexible wrapping material
DE59609013T DE59609013D1 (en) 1996-05-15 1996-05-15 Bags made of flexible packaging material
ES96810308T ES2172651T3 (en) 1996-05-15 1996-05-15 FLEXIBLE PACKAGING MATERIAL BAG.
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 (en) 1996-05-15 1997-05-14 Flexible packaging material wrapper
ARP970102007A AR007123A1 (en) 1996-05-15 1997-05-14 BAG COVERED WITH FILM FORMING MASSES, MADE FROM FLEXIBLE PACKAGING MATERIAL AND PROCEDURE FOR ITS MANUFACTURE
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 (en) 1996-05-15 1996-05-15 A bag made of a flexible packing material

Publications (2)

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

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ID=8225610

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EP96810308A Expired - Lifetime EP0807587B1 (en) 1996-05-15 1996-05-15 A bag made of a flexible packing material

Country Status (8)

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

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Also Published As

Publication number Publication date
AR007123A1 (en) 1999-10-13
US6173554B1 (en) 2001-01-16
CA2204083C (en) 2005-02-15
DK0807587T3 (en) 2002-07-29
MX9703468A (en) 1998-06-30
US5934809A (en) 1999-08-10
CA2204083A1 (en) 1997-11-15
EP0807587B1 (en) 2002-04-03
ES2172651T3 (en) 2002-10-01
BR9703162A (en) 1998-09-22
DE59609013D1 (en) 2002-05-08

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