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
  • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
  • B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
• • 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
  • B65D33/007—Details of, or accessories for, sacks or bags for facilitating the separation of the two walls, e.g. walls of inequal height, tabs; for maintaining the mouth of the sack or bag open
• • 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
• • 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
  • B65D75/5855—Peelable seals
• • 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
  • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
  • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding

Definitions

• the invention relates to a bag packaging with formed from at least one flexible packaging film bag front wall and bag back wall for packaging creaks flowable, with the bag front wall and the bag rear wall via a sealing seam sealing edge and with an operable for opening and removal of the filling by hand opening aid.
• the bags are usually constructed of film laminates and have on the outside a printed, optionally overcoated paper layer or a plastic film, eg. B. of PET, oPP, oPA or cellophane, on.
• the plastic film can also be printed by reverse printing.
• z. B. serving as a predetermined crack point material weakening, z. B. in the form of laser cutting lines that extend over only a portion of the material thickness of the film laminate may be provided.
• Another Sollrissstelle is z. B. a commonly arranged in a sealed seam Anreisskerbe.
• a known opening aid consists of a notch introduced in the packing unit usually on the finished bag into a sealed seam.
• the laminate is locally weakened before bag production by means of laser cuts in the intended opening area.
• the invention has for its object to provide a pouch packaging of the type mentioned, which has a one-hand opening system to be used, with which a contamination of the hands with leaking out of the package contents can be avoided with proper operation.
• a sealing zone at a distance from the sealing edge farthest free end of a sealing zone is arranged and at least the bag front wall on the side facing the outside of the bag packaging side has an outer layer, wherein the outer layer and the Under the outer layer lying part of the bag front wall in an area enclosing the free end of the sealing zone area limit an outlet zone for the filling material.
• the sealing seam is widened in a region adjoining the sealing edge to a sealing zone directed away from the sealing edge, and the outlet zone extends up to a marginal edge of the sealing edge.
• the sealing zone and the outlet zone are arranged at a distance from the sealing seam and the outer layer has in the surface area of the outlet zone a line of weakness or a separation cut as an exit point for the contents of the bag packaging.
• the outer layer in the outflow zone adheres to the part of the pouch front wall which lies below the outer layer and has a lower adhesive power than the outflow zone and is peelable therefrom.
• the outer layer in the outlet zone is detached from the part of the bag front wall which lies below the outer layer.
• the outer layer in the outflow zone is detached from the part of the pouch front wall lying beneath the outer layer except for an area in the sealing edge and adheres outside in the region in the sealing edge with respect to the adhesion force the outlet zone lower adhesive force on the lying under the outer layer part of the bag front wall and is peelable from this.
• the sealing zone may have the shape of a triangle with a base parallel to the sealing edge and legs forming a tip at a distance from the sealing edge.
• the sealing zone can also have the shape of a strip preferably projecting at right angles from the edge of the seal, with a free end.
• the outlet zone is delimited by two boundary lines extending essentially parallel to one another and perpendicular to the edge of the seal.
• the outlet zone can also be delimited by two borderlines preferably extending in the region of a bag corner against one end of the sealing edge.
• the sealing zone also preferably has the form of a three-part Ecks with a lying parallel to the sealing edge base and spaced from the sealing edge forming a peak legs.
• the outlet zone is delimited by two boundary lines running substantially parallel to one another and perpendicular to the edge of the seal, and two boundary lines extending essentially parallel to one another and parallel to the edge of the seal.
• the sealing layer can be connected as a sealing film via a laminating adhesive with a carrier layer.
• the sealing layer can also be applied directly to a carrier layer by extrusion coating. Under certain conditions, it is also possible to produce a sealing layer and a carrier layer by coextrusion.
• the outer layer arranged on the side of the bag front wall which forms the outer side in the finished bag packaging is separated in a separable manner from a carrier layer located below the outer layer in the regions outside the outlet zone for the filling material by means of an adhesive layer.
• the outer layer is peelably connected to the carrier layer or detached from it.
• the outer layer can be peelably sealed within the outlet zone only in the region of the sealing edge against the carrier layer and be detached from the carrier layer outside the sealing edge.
• the sealing layer and the carrier layer can form a single, common layer.
• the sealing layer, the carrier layer and the outer layer can also consist of a single layer or be constructed in multiple layers.
• the sealant layers are usually polyethylenes, eg LDPE, LLDPE, MDPE and mixtures thereof or co-extruded, metallocenes polyethylenes and ionomers, eg Surlyn®, or coextruded films of these materials with PE as support layer.
• Polypropylene can also be used for special applications.
• the thickness of the sealing layers is in the range of 10 to 100 [im, preferably 15 to 75 ⁇ .
• Suitable carrier layers are films of metal, in particular aluminum or an aluminum alloy. These serve as a barrier layer against the passage of oxygen, water vapor and flavors.
• the thickness of the aluminum foil used as a barrier for the bag is about 5 to 30 ⁇ m, preferably 7 to 15 ⁇ m.
• Suitable outer layers are biaxially oriented plastic films of polyester, polypropylene or polyamide.
• a preferred polyester is PET (polyethylene terephthalate) in a preferred thickness of 8 to 20 ⁇ , in particular 12 [im.
• the plastic film used as outer layer can be printed frontally and optionally provided with a lubricious topcoat or be counter-printed.
• a plastic film a plastic-coated paper layer can also be used as the outer layer.
• barrier layer of aluminum foil other barrier layers can be used, for.
• ceramic thin films of silicon oxides and / or alumina which are applied by sputtering or by deposition from the vacuum, or plastic films, for.
• B. from materials of the series of vinyl alcohols, eg. As the ethyl-vinyl-alcohol polymers or polyvinylidene chloride.
• the bag front wall and the bag back wall may have the same or a different layer structure.
• the bag front wall and the bag rear wall are usually produced from the same packaging film.
• the bag packages according to the invention are in particular 3- and 4-sealed edge bags as well as tubular bags with one longitudinal seam and two transverse seams.
• the scope includes, inter alia, a package in which the bag back wall as a flexible, z. B. made by thermoforming or cold forming container with a circumferential sealing surface and the bag front wall is sealed as a lid against the sealing surface.
• Fig. 1 is a plan view of the front of a flat bag with
• FIG 3 shows the section of Figure 2 after opening the flat bag.
• Fig. 4 is a perspective view of the tubular bag of Figure 1 in the unopened state.
• FIG. 5 shows the tubular bag of FIG. 4 in the opened state
• FIG. 6 shows a plan view of a part of the front side of the flat bag of FIG. 1 with a different course of the outlet zone for the filling material;
• FIG. 7 shows a plan view of a part of the front side of the flat bag of FIG. 1 with a differently configured sealing zone
• Fig. 8 is a plan view of the part of the front side of the flat bag of Fig. 7 with different course of the outlet zone for the medium;
• Fig. 9 is a plan view of the part of the front side of the flat bag of
• Fig. 11 shows a first structure of a packaging film for producing a
• FIG. 12 shows a second construction of a packaging film for producing a bag packaging
• FIG. 13 shows a plan view of the front side of the flat bag of FIG. 1 with the sealing and outlet zone arranged outside the sealed seam;
• FIG. 14 shows the removal of contents from the bag of FIG. 13.
• the packaging film forming the front of the bag referred to herein as the bag front wall 12, and the packaging film forming the back of the bag, referred to herein as the bag rear wall 14, are substantially strip-shaped over the bag package 10 along the seal edges 16, 18, 20, 22 Sealed seam 24 connected to each other and include a Gregutraum 13 a.
• the pouch packaging 10 normally contains a flowable, in particular a liquid, semi-liquid or pasty filling material 11. Pouch packaging 10 comprises, for example, the known, ketchup, mustard, mayonnaise and the same food items containing sachets as filling material 11.
• the strip-shaped sealing seam 24 to a sealing zone 26 in the shape of an isosceles triangle with a parallel to the sealing edge 16 base c and two at a distance e to the sealing edge 16 a tip 27 forming legs a , b extended.
• the bag front wall 12 can be sealed on the side directed towards the inside of the bag packaging 10 against the side of the bag rear wall 14 which is likewise directed against the inside of the bag packaging 10.
• the side of the bag front wall 12 directed towards the outside has an outer layer 28.
• the outer layer 28 adheres to the lower part 29 of the bag front wall 12 below the adhesion force outside the outlet zone 30 or is in the outlet zone 30 from the underlying part 29 the bag front wall 12 detached.
• the outlet zone 30 is bounded by a parallel to the sealing edge 16 extending boundary line 32 and two parallel to each other and perpendicular to the sealing edge 16 extending boundary lines 34, 36, the transition of the outer layer 28 of the disconnect connection with the underlying part 29 of the bag front wall 12 for peelable or non-adhesive connection in the outlet zone 30 form.
• the boundary line 32 running parallel to the sealing edge 16 is, as seen in plan view of the bag, spaced from the tip 27 of the sealing zone 26 by a distance f.
• FIGS. 4 and 5 show that when a pressure is applied to the pouch packaging 10 held between the index finger 46 and the thumb 48 of a hand 44, the filling material 11 passes through the part 29 of the pouch front wall 12 and the outer layer lying beneath the outer layer 28 on the marginal edge 17 of the sealing edge 16 28 formed outlet opening 42 exits. Furthermore, it can be seen from FIG. 5 that the opening of the pouch packaging and removal of the filling material 11 is effected by one-handed operation. Here are the squeezing the bag causing ger and thumb from the outlet opening for the filling spaced such that contamination with contents, as can not be reliably avoided even with the appropriate opening in conventional bags with Aufreisssystem, is prevented.
• the channel 40 formed by the outlet zone 30 and bounded by two borderlines 34 ', 36' runs along one side of the triangular sealing zone 26 to the sealing edge 16, so that the outlet opening 42 results at the peripheral edge 17 of the sealing edge 16 in a bag corner.
• the triangular sealing zone 26 extends at right angles from the sealing edge 16 or from the strip-shaped sealing seam 24 '. in the form of a strip with a free end 27 'instead of the triangular tip 27.
• the free end 27 'of the strip-shaped sealing zone 26' is here enclosed according to the embodiment shown in FIGS. 1 to 5 with the triangular sealing zone 26 of the outlet zone 30 for the filling material 11.
• the outlet zone 30 is limited by a parallel to the sealing edge 16 and two parallel to each other and perpendicular to the sealing edge 16 extending boundary lines 32, 34, 36th
• the channel 40 formed by the outlet zone 30 and delimited by two boundary lines 34 ', 36' extends along one side of the strip-shaped sealing zone 26 'to the peripheral edge 17 of the sealed seam 16.
• the packaging film for the production of 4-sealed edge bags was a laminate with the structure
• the circumferential sealing seam 24 and the strip-shaped sealing zone 26 ' were carried out as a corrugated or wave-shaped seal with a corrugation arranged in the running direction of the sealing seam 24 or in the longitudinal direction of the strip and comparatively as a flat seal.
• the pressure build-up in the bag up to the bursting pressure was carried out at a speed of 50 mbar / sec.
• the results of the bursting tests are summarized in Table 1 and in Fig. 10 the calculated product X * Y is plotted as individual values and as a regression line.
• the optimum dimensions and arrangements of the strip-shaped sealing zones 26 'corresponding to the lowest possible bursting pressure can be determined in a simple manner.
• FIGS. 11 and 12 show the construction of two packaging films suitable for producing the pouch packaging 10.
• a sealing layer 50 is applied by extrusion coating to the side of a carrier layer 52 later directed against the inside of a bag packaging produced from the packaging film or connected to the carrier layer 52 via an adhesive layer.
• the side of the carrier layer 52 directed against the outside of the pouch packaging produced from the packaging film is connected in a separable manner to the outer layer 28 via a first joining material 54.
• the outer layer 28 with the support layer 52 lying below the outer layer 28 is, in some cases, not peelably connected via a connection-free zone 58 or via a second connecting material 56.
• the first bonding material 54 for producing the release-resistant compound is, for example, an adhesive based on polyurethane (PU).
• the second bonding material 56 for producing the peelable compound is, for example, a hotmelt or a hot-sealing wax.
• the sealing layer 50 consists for example of a polyethylene (PE), the support layer 52 of an aluminum foil and the outer layer of polyethylene terephthalate (PET).
• the packaging film shown in FIG. 12 corresponds in its construction to the packaging film illustrated in FIG. 11, wherein here the sealing layer 50 simultaneously contains the carrier layer and consists, for example, of a polyethylene.
• the same packaging film can be used for the bag front wall 12 and the bag rear wall 14.
• the application of the second bonding material 56 used to produce the peelable regions can be carried out in a printing process, for. B. as register printing.
• a sealing zone 26 in the form of an isosceles triangle with a base c lying parallel to the sealing edge 16 and two from the one shown in FIG Sealing edge 16 weg josde tip 27 "forming legs a, b arranged approximately in the middle of the bag front wall 12.
• the surface area of the outlet zone 30 for the filling material 11 encloses the entire sealing zone 26 "and also has a spacing around the sealing edge 16 and the sealed seam 24.
• the outer layer 28 is provided with a weakening line or through the area of the outlet zone 30 for the filling material 11 the outer layer continuous separating cut 37 is provided as a slot-shaped opening for the discharge of the filling material 11 from the bag packaging 10.
• the separating cut 37 runs parallel to the sealing seam 16 and is arranged between the sealing edge 16 and the sealing zone 26 ".
• the outlet zone 30 is bounded by two parallel to the sealing edge 16 extending boundary lines 32, 33 and two parallel to each other and perpendicular to the sealing edge 16 extending boundary lines 34, 36, the transition of the outer layer 28 of the disconnect Verbin Formation with the underlying part 29 of the bag front wall 12 for peelable or non-adhesive connection in the outlet zone 30 form.
• the bag package 10 which is provided for a product outlet from the bag front wall 12 and shown in FIG. 13, is pressurized from outside by folding the bag and pressing the bag halves resting on one another by the folding, which in practical use-as shown in FIG. z. Between thumb 48 and index finger 46 of a hand. leads. As already explained with reference to the pouch packaging 10 shown in FIGS. 1 to 5, wrinkling also takes place here on the pouch 10 in such a way that the tension acting on the mutually sealed pouch walls at the transition from the filling space 13 to the sealing compound is at the top 27 "of the sealing zone 26" reaches a maximum.
• bag packaging 10 also includes a packaging in which the bag rear wall 14 as a flexible, z. B. made by thermoforming or cold forming container with a circumferential sealing surface and the bag front wall 12 is sealed as a lid against the sealing surface.

Priority Applications (5)

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Publications (1)

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Family Applications (1)

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Citations (4)

Family Cites Families (9)

• 2010
  • 2010-10-08 ES ES10405188T patent/ES2430464T3/es active Active
  • 2010-10-08 PL PL10405188T patent/PL2439149T3/pl unknown
  • 2010-10-08 EP EP10405188.3A patent/EP2439149B1/de active Active
  • 2010-10-08 PT PT104051883T patent/PT2439149E/pt unknown
• 2011
  • 2011-10-03 RU RU2013120954/12A patent/RU2563779C2/ru active
  • 2011-10-03 BR BR112013008206-2A patent/BR112013008206B1/pt not_active IP Right Cessation
  • 2011-10-03 CA CA2811060A patent/CA2811060A1/en not_active Abandoned
  • 2011-10-03 US US13/825,990 patent/US20130209003A1/en not_active Abandoned
  • 2011-10-03 WO PCT/EP2011/004912 patent/WO2012045424A1/de active Application Filing
  • 2011-10-03 MX MX2013003453A patent/MX2013003453A/es not_active Application Discontinuation

Patent Citations (4)

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