EP3757036B1 - Foil bag - Google Patents
Foil bag Download PDFInfo
- Publication number
- EP3757036B1 EP3757036B1 EP20177532.7A EP20177532A EP3757036B1 EP 3757036 B1 EP3757036 B1 EP 3757036B1 EP 20177532 A EP20177532 A EP 20177532A EP 3757036 B1 EP3757036 B1 EP 3757036B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- material section
- bag according
- film bag
- bag
- 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.)
- Active
Links
- 239000011888 foil Substances 0.000 title description 18
- 239000000463 material Substances 0.000 claims description 120
- 238000000926 separation method Methods 0.000 claims description 13
- 230000003313 weakening effect Effects 0.000 claims description 12
- 229920000098 polyolefin Polymers 0.000 claims description 6
- 238000007789 sealing Methods 0.000 description 30
- 239000002245 particle Substances 0.000 description 22
- 238000004064 recycling Methods 0.000 description 19
- -1 polyethylene Polymers 0.000 description 15
- 238000004806 packaging method and process Methods 0.000 description 14
- 239000004698 Polyethylene Substances 0.000 description 9
- 229920000573 polyethylene Polymers 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000012939 laminating adhesive Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000013502 plastic waste Substances 0.000 description 3
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 2
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- BLDFSDCBQJUWFG-UHFFFAOYSA-N 2-(methylamino)-1,2-diphenylethanol Chemical compound C=1C=CC=CC=1C(NC)C(O)C1=CC=CC=C1 BLDFSDCBQJUWFG-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000003845 household chemical Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- B65D75/54—Cards, coupons, or other inserts or accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/004—Information or decoration elements, e.g. level indicators, detachable tabs or coupons
-
- 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
- B65D2203/00—Decoration means, markings, information elements, contents indicators
- B65D2203/02—Labels
Definitions
- the invention relates to a film bag according to claim 1.
- the film bag is in particular a film packaging bag, with various configurations being possible.
- Foil packaging bags can be equipped, for example, with stand-up bases, gussets, carrying handles, pouring spouts, reclosures or the like.
- Foil packaging bags are suitable for providing, storing and transporting a wide variety of foods, household chemicals and other everyday goods.
- film packaging bags can be used for solid, lumpy, granular or powdery as well as liquid or pasty products, which are optimally protected by the bag body.
- Film packaging bags of this type are closed tightly or largely tightly after filling, so that safe transport and safe storage are then possible. If the film bag has a reclosure, further storage is possible even after opening it for the first time.
- the material for the bag wall is often a laminated composite as a bag film with an inner film made of polyethylene (PE) and an outer film based on polyethylene terephthalate (PET) or biaxially oriented polypropylene (BO-PP), with a printed layer in such a laminated composite before the Gluing the inner film to the outer film is applied to the inside of the contact surface either on the outer film or the inner film and is then visible through the transparent outer film.
- PE polyethylene
- PET polyethylene terephthalate
- BO-PP biaxially oriented polypropylene
- Such conventional foil packaging bags are characterized by a particularly high-quality appearance and good functional properties.
- a single-variety plastic recycling is not possible, which is why corresponding film packaging bags as disposable items are usually landfilled or at best incinerated after use, with at least thermal recycling being possible.
- Single-origin plastic waste on the other hand, can be easily recycled, although the printing ink that is often present on the bag wall can, depending on the composition, hinder the formation of high-quality recycled products.
- JPH 5-84640 U a film bag for refilling a liquid is proposed, which is provided with a peripheral separate banderole.
- the film bag is stabilized by the separate, comparatively stiff banderole, and a user can also easily grip the film bag by the banderole.
- multi-layer film bags and film packaging are known in which individual layers are peelable, ie are connected so that they can be separated from one another. Fastening seams are produced whose bond strength is adjusted in such a way that these fastening seams are separated when a tensile force is exerted on the contact surface of the successive layers.
- Various embodiments of such film bags and film packaging are, for example, in JPH 8-2536 A , US 2018/0009587 A1 , U.S. 3,114,643 A and U.S. 6,280,085 B1 described.
- a generic film bag is out EP 3 168 169 A1 ( 1 ) known.
- the printed material section only extends over a middle area and is attached there to permanent, ie non-peelable attachment seams in the form of heat-sealed seams on the underlying front wall.
- the two opposite front walls are each provided with a printed material section, such a design being particularly preferred within the scope of the present invention.
- the majority of the printed material section can be removed for optimized recycling be torn along lines of weakness which run directly adjacent to the sealing seams on the longitudinal edges. Narrow edges of the material section remain only directly at the heat-sealed seams. If the material section is deliberately not printed there, the bag body remaining after the material section has been torn off is completely unprinted. Simple recycling is then possible, particularly in the case of a single-variety configuration.
- the present invention is based on the object of specifying a film bag that has a high-quality appearance, has good functional properties and enables improved recycling.
- the continuous connecting seam closed in the form of a frame also avoids or at least significantly reduces the risk of soiling between the material section and the associated front wall. This applies even if, according to a variant described in more detail below, the material section has an opening within the frame-like closed connecting seam, because in typical applications during storage, transport and also use of the film bag, the edge areas are exposed to a greater risk of contamination.
- the material section is attached to the assigned front wall by the frame-like closed, continuous connecting seam, suitable measures can be taken to allow the bag film on the one hand and at least part of the material section to be recycled separately after the film bag has been used.
- the material section is essentially unconnected to the associated front wall within the connecting seam. After crushing the foil bag at least separate particles of the bag film on the one hand and of the material section on the other are formed in the unconnected areas. A separation is then possible with technical means. For example, optical devices can be used to determine whether the individual particles are printed, so that suitable sorting is possible on this basis.
- Sorting can also be carried out, for example, by air separation if the bag film on the one hand and the material section on the other hand have a sufficiently different thickness with a comparable density of the materials used in each case.
- the density is, for example, in a range between 0.9 g/cm 3 and 1 g/cm 3 , for example between 0.92 g/cm 3 and 0.97 g/cm 3 . If particles with the same area are then cut from the bag film on the one hand and the printed material section on the other hand, the weight of the different particles essentially depends on the thickness given a comparable density of the materials. The different particles can then be separated from one another by air classification.
- the thickness ratio of the bag film to the material section is at least 3:2, with a thickness ratio between 2:1 and 6:1 being particularly preferred from a practical point of view.
- the bag film is expediently unprinted. If, however, as part of the measures described above, particles are separated by optical means after the film bag has been shredded, printed parts of the bag film could also be sorted out, so that a reliable division into a high-quality and a less high-quality particle fraction can then take place. However, the disadvantage would then arise that with the printed sections of the bag film, due to the greater thickness, a relatively large amount of material would be assigned to the less valuable fraction.
- the bag film could be printed with a printing ink that is water-soluble, for example.
- a printing ink that is water-soluble
- the bag film is initially well protected from environmental influences by the material section arranged on it.
- only small areas of the bag film are provided with an imprint that does not lead to any significant impairment of the corresponding particle fraction.
- very small imprints in the sense of positioning marks or the like can be expedient for the manufacturing process without the corresponding recycling material being excessively impaired as a result.
- the material section has a weakened area adjacent to the fastening seam in order to be able to separate a frame fastened to the connecting seam from a central piece of the material section by separating the material within the material section. It is thus possible for a user, after using the film bag, to consciously tear off the center piece from the bag body, so that separate sorting and disposal is then possible from the outset.
- the material section is only printed on the central piece, so that the frame remaining on the associated front wall is then unprinted along the connecting seam.
- the entire remaining body of the bag is then not provided with printing ink and can be used as a particularly high-quality recycling product. This applies in particular when--as described in more detail below--the bag film and the material section are formed from a single type of polymer, in particular a polyolefin.
- single-variety is understood in particular when the various components are made of polyethylene or polypropylene, for example, with polyethylene or polypropylene of different densities such as ULDPE, LDPE, LLDPE, MDPE, LMDPE, HDPE being able to be recycled together as a mixture .
- polyethylene or polypropylene of different densities such as ULDPE, LDPE, LLDPE, MDPE, LMDPE, HDPE
- the center piece can be torn out by a user, various facilitating measures can be provided for this purpose.
- the weakened area has a weakened line or is formed by a weakened line.
- a weakening can initially result from the fact that the polymer material of the material section is weakened solely due to the formation of the connecting seam. This applies in particular if the connecting seam is formed as a heat-sealed seam according to a preferred embodiment of the invention.
- a weakening can result adjacent to the heat sealing seam solely due to the effect of temperature and the mechanical stress on the sealing jaws. Low strength is often observed at the root of the seam, that is to say at the lateral edge of such a heat-sealed seam.
- a weakening line can also be deliberately formed. This can be, without limitation, a perforation, an embossing, a section of material non-completely severing incision, laser line, or the like. The material can be weakened in its polymeric structure and/or partially cut or removed by a laser.
- an access opening can additionally or alternatively also be provided in the material section within the frame. For example, an area of the material section lying within the frame can be punched out. Such an access opening can, for example, be large enough for a user to insert a finger there. If a user then engages in this engagement opening, the middle piece can easily be torn off.
- the access opening is expediently arranged adjacent to the connecting seam, in particular in a corner area. Since the access opening is not located directly on the edge of the front wall, but is arranged inside the frame, good protection against accidental tearing off is achieved.
- a separate tear-off tab can be attached to the material section inside the frame.
- the tear-off tab can be formed, for example, from a foil strip which is firmly glued or sealed onto the material section at one end and can be gripped by a user at its other end.
- Corresponding tear-off tabs are known from the packaging sector, for example from packaging for handkerchiefs.
- the bag film is essential for the structural stability and shape of the bag body, while the printed material portion essentially serves as a type of information carrier and not essential must contribute to stabilization.
- the printed material section can thus be made comparatively thin, with the thickness being for example between 10 ⁇ m and 80 ⁇ m, in particular between 20 ⁇ m and 50 ⁇ m.
- the material section is formed in one layer from a monofoil, which can then be printed both on the inside in the direction of the associated front wall or on the outside.
- the film forming the material section or at least one layer of such a film can be monoaxially or biaxially oriented.
- an at least two-layer structure of the material section with a sealing layer and an outer layer can also be considered.
- the sealing layer and the outer layer can also be formed from a single type of polyethylene or polypropylene, for example, although different types or blends can be used with regard to the different requirements. If, for example, the sealing layer has a low melting or softening point compared to the outer layer, the appearance of the film bag on the outside is not impaired by the sealing seam at a suitable sealing temperature.
- the material section can also have an internal imprint which is arranged between the sealing layer and the outer layer at an internal transition. Further layers can of course also be provided.
- the sealing layer and the outer layer are also further variants in order to be able to tear off the center piece easily enable as previously described. Provision can be made for the sealing layer and the outer layer to be connected in a non-connected or peelable manner, optionally with the integration of further layers, in a partial edge section arranged above a section of the connecting seam, with the sealing layer and the outer layer being permanently connected in this way, optionally with the integration of further layers adjacent to the partial edge section that when the center piece of the material section is torn off from the associated front wall, starting from the edge section, the sealing layer tears and thus a layer separation at the permanent connection is avoided.
- the material section and the associated front wall are connected to one another exclusively at the connecting seam.
- the entire area of the material section lying within the connecting seam can then be easily separated by tearing it off or crushing it.
- individual connection points are provided for stabilization within the connection seam that is closed all around.
- connection points are formed by heat sealing, for example, they can be permanent or peelable without limitation.
- a permanent connection is then easy to produce, as is the case with the connecting seam itself.
- the imprint of the material section is also omitted at such connection points, so that no unwanted color residues remain on the bag film or are connected to the bag film.
- the connecting seam is preferably designed as a heat-sealed seam.
- the typical width of the connecting seam is between 1.5 mm and 10 mm, in particular between 2 mm and 8 mm.
- the bag film is formed from a single type of polyolefin, although thin functional and barrier layers are also possible.
- the bag film and the material section are particularly preferably made of a single type of polyolefin, for example of a single type of polyethylene or of a single type of polypropylene.
- the thickness of the bag film is typically between 50 ⁇ m and 300 ⁇ m, preferably between 80 ⁇ m and 170 ⁇ m.
- the material section only extends over a partial area of the front wall and is fastened there in the manner described in the manner of a frame with the continuous connecting seam.
- the material section particularly preferably extends over the entire assigned front wall or essentially over the entire assigned front wall, resulting in a double-walled design overall.
- both front walls can also be provided with an associated material section in the manner described, so that the film bag according to the invention cannot be distinguished from a conventional film bag, at least at first glance.
- the bag film is preferably unprinted. Proceeding from this, however, the bag film itself can be colored to a large extent clear, opaque or non-transparent, in particular white. Many plastic materials are clear or opaque in their pure form, so that this appearance results without the addition of additives.
- a colorant that is harmless for many applications such as, for example, titanium dioxide
- the film bag can also have functional elements such as pressure fasteners (zippers), zip fasteners (sliders) or pouring spouts.
- functional elements such as pressure fasteners (zippers), zip fasteners (sliders) or pouring spouts.
- Corresponding functional elements can without further be formed from the same material as the bag film, so that they then do not hinder recycling.
- the film bag comprises, on the one hand, the bag film and, on the other hand, the printed material section fastened in the form of a frame on at least one front wall formed from the bag film.
- the material section is usually also formed by a conventional foil.
- the separately manufactured and provided bag film on the one hand and the film for forming the material section on the other hand can then be supplied and handled differently.
- the bag body can be formed from a single material cut of the bag film or also from several sections of the bag film. If the foil bag has side folds, these side folds can either be inserted by folding from a single material cut or can be provided as separate strips when several sections are joined together.
- the bag film it is also possible first to connect the bag film to the film to form the material section and only then to finish shaping the bag.
- Such an upstream connection of the bag film and the further film can also be effected by adhesive, so that no additional heat sealing is then necessary for the connection where adhesive is provided.
- the bag film and a film forming the section of material may have longitudinal stripes of adhesive be connected, in which case a connection by adhesive or a connection by heat sealing is also possible in the transverse direction, depending on the process control.
- the connecting seam it is also possible within the scope of the invention for the connecting seam to be formed in different ways on different sections. All that is essential to the invention is that the connecting seam runs around the edge of the material section permanently, cannot be separated and is closed overall in the form of a frame.
- FIGS. 1A and 1B show a film bag with a bag body 2 made of a bag film and having two opposite front walls 1, wherein in the illustrated embodiment an associated printed material section 3 is attached to each front wall 1 with a permanent, non-separable connecting seam 4 in the form of a heat-sealed seam closed in the shape of a frame.
- the area of the material section 3 within the connecting seam 4 is not connected to the associated front wall 1 in each case.
- the material section 3 is less thick than the bag film, ie the associated front wall 1 .
- the material sections 3 extend over the entire surface of the respectively associated front wall 1, so that according to the Figure 1B a kind of double-walled construction results.
- the material sections 3 are each provided with an imprint 7 only in a central piece 6 surrounded by a weakening line 5 .
- the front walls 1 and a frame 8 of the material section 3 running around the center piece 6, with which the material section 3 is attached to the connecting seam 4, are completely unprinted.
- the bag body 2 having the front walls 1 and the material sections 3 are made of a single type of polyolefin, for example of a single type of polyethylene or of a single type of polypropylene, although different types or blends can be considered.
- the bag film, which forms the front walls 1, made of polyethylene with a thickness of 100 ⁇ m
- the material sections are each formed from a machine direction oriented polyethylene (MDO-PE) with a thickness of 25 ⁇ m.
- MDO-PE machine direction oriented polyethylene
- the material sections 3 have good mechanical properties, a high-quality appearance and good printability.
- the material sections 3 according to the Figure 1B printed on its side facing the respective front wall 1, so that the imprint 7 is well protected.
- the particles formed from the bag film on the one hand and the material section 3 on the other hand can thus be easily and reliably separated from one another.
- These particles are also comparatively heavy and can be separated together with the particles of the bag film. Since this third particle fraction is also not provided with an imprint according to a preferred embodiment of the invention, very good recycling is possible overall.
- the previously described weakening line 5 is provided, which can be in the form of a notch, perforation or laser seam.
- a notch is shown as an example in this context. In this context, it should be pointed out that such a separately formed weakening line 5 is not absolutely necessary, depending on the design.
- a weakened area can also arise because the polymer material at the edge of the connecting seam 4 has a reduced strength due to the effect of pressure and temperature due to the production of the connecting seam 4 .
- an engaging hole 9 is provided within the frame 8.
- the access opening 9 is provided in the area of a corner of the bag.
- the handle opening 9 is selected to be large enough that a user can insert a finger there and then tear out the central piece 6, as a result of which all printed material is removed from the bag body 2.
- FIG. 1 shows an alternative embodiment, a separate tear-off tab 10 being attached to the material section 3 within the frame 8 .
- One end of the tear-off tab 10 is firmly glued or sealed to the material section 3, while the other end of the tear-off tab 10 can be gripped with a finger, so that the center piece 6 can then be removed by pulling on the tear-off tab 10.
- the film bag has only two front walls 1 which are connected directly to one another.
- a film bag in the form of a gusseted bag is shown as an example. Additional side folds 11 run between the two front walls 1, with an internal functional element 12 in the form of a reclosure also being indicated in a head region of the bag body 2.
- an internal functional element 12 in the form of a reclosure also being indicated in a head region of the bag body 2.
- Also according to the 3 is attached to one of the front walls 1 of the material section 3 as described above with a permanent, inseparable seam.
- a specially designed partial edge section 13 is provided at one corner of the bag body 2, which in connection with the Figures 4a and 4b will be explained further.
- the material section 3 has a two-layer structure with a sealing layer 14 and an outer layer 15 .
- the imprint 7 can also be arranged on the inside between the sealing layer 14 and the outer layer 15, so that optimum protection results.
- the sealing layer 14 and the outer layer 15 are above a section of the connecting seam 5 arranged partial edge section 13 is not connected or can be peeled off, i.e.
- a release layer can be provided on the partial edge section 13, for example before a laminating adhesive is applied. In order to avoid a connection, the laminating adhesive can also be left out there.
- the bond strength between the sealing layer 14 and the outer layer 15 is thus greater than the strength of the sealing layer 14 along the thickness, for which purpose weakening lines (not shown) can also be provided in principle.
- a controlled cohesive fracture is achieved within the sealing layer 14 and an adhesive fracture between the sealing layer 14 and the outer layer 15 or a layer of laminating adhesive provided there is avoided on the center piece 6 .
- the printed film material of the material section 3 can be separated from the unprinted bag body.
- the width of the connecting seam 4 is usually between 2 mm and 8 mm.
Description
Die Erfindung betrifft einen Folienbeutel nach Anspruch 1.The invention relates to a film bag according to
Der Folienbeutel ist insbesondere ein Folienverpackungsbeutel, wobei verschiedene Ausgestaltungen in Betracht kommen. Folienverpackungsbeutel können beispielsweise mit Standböden, Seitenfalten, Tragegriffen, Ausgießern, Wiederverschlüssen oder dergleichen ausgerüstet sein. Folienverpackungsbeutel eignen sich dabei für die Bereitstellung, Lagerung und den Transport verschiedenster Lebensmittel, Haushaltschemikalien und anderer Güter des täglichen Gebrauchs.The film bag is in particular a film packaging bag, with various configurations being possible. Foil packaging bags can be equipped, for example, with stand-up bases, gussets, carrying handles, pouring spouts, reclosures or the like. Foil packaging bags are suitable for providing, storing and transporting a wide variety of foods, household chemicals and other everyday goods.
Je nach Ausgestaltung können Folienverpackungsbeutel für feste, stückige, körnige oder pulvrige sowie auch flüssige oder pastöse Produkte eingesetzt werden, die durch den Beutelkörper optimal geschützt sind. Derartige Folienverpackungsbeutel werden nach dem Befüllen dicht oder weitgehend dicht verschlossen, so dass dann ein sicherer Transport und eine sichere Lagerung möglich sind. Wenn der Folienbeutel einen Wiederverschluss aufweist, ist auch nach einem erstmaligen Öffnen noch eine weitere Lagerung gut möglich.Depending on the design, film packaging bags can be used for solid, lumpy, granular or powdery as well as liquid or pasty products, which are optimally protected by the bag body. Film packaging bags of this type are closed tightly or largely tightly after filling, so that safe transport and safe storage are then possible. If the film bag has a reclosure, further storage is possible even after opening it for the first time.
Herkömmliche Folienverpackungsbeutel werden in der Praxis als Massenartikel eingesetzt, wobei der typische Aufbau solcher Folienverpackungsbeutel beispielsweise aus
Häufig ist als Material für die Beutelwand ein Kaschierverbund als Beutelfolie mit einer Innenfolie aus Polyethylen (PE) und eine Außenfolie auf der Basis von Polyethylenterephthalat (PET) oder biaxial orientierten Polypropylen (BO-PP) vorgesehen, wobei eine Druckschicht bei einem solchen Kaschierverbund vor dem Verkleben der Innenfolie mit der Außenfolie innenliegend an der Kontaktfläche entweder auf die Außenfolie oder die Innenfolie aufgebracht wird und dann durch die transparente Außenfolie sichtbar ist.The material for the bag wall is often a laminated composite as a bag film with an inner film made of polyethylene (PE) and an outer film based on polyethylene terephthalate (PET) or biaxially oriented polypropylene (BO-PP), with a printed layer in such a laminated composite before the Gluing the inner film to the outer film is applied to the inside of the contact surface either on the outer film or the inner film and is then visible through the transparent outer film.
Derartige herkömmliche Folienverpackungsbeutel zeichnen sich durch ein besonders hochwertiges Erscheinungsbild und gute Funktionseigenschaften aus. Allerdings ist aufgrund der Kaschierung der unterschiedlichen Polymermaterialien ein sortenreines Kunststoff-Recycling nicht möglich, weshalb entsprechende Folienverpackungsbeutel als Einweg-Artikel nach ihrer Benutzung in der Regel deponiert oder bestenfalls verbrannt werden, wobei zumindest noch eine thermische Verwertung möglich ist.Such conventional foil packaging bags are characterized by a particularly high-quality appearance and good functional properties. However, due to the lamination of the different polymer materials, a single-variety plastic recycling is not possible, which is why corresponding film packaging bags as disposable items are usually landfilled or at best incinerated after use, with at least thermal recycling being possible.
Sortenreine Kunststoffabfälle können dagegen leicht recycelt werden, wobei dann jedoch die häufig auf der Beutelwand vorhandene Druckfarbe je nach Zusammensetzung die Bildung hochwertiger Recyclingprodukte behindern kann.Single-origin plastic waste, on the other hand, can be easily recycled, although the printing ink that is often present on the bag wall can, depending on the composition, hinder the formation of high-quality recycled products.
Im Hinblick auf eine Wiederverwertung sind also sortenreine und unbedruckte Kunststoffabfälle besonders vorteilhaft. Dagegen besteht jedoch bei Folienbeuteln und insbesondere bei Folienverpackungsbeuteln das Bedürfnis eines hochwertigen Erscheinungsbildes, wobei neben einer ansprechenden graphischen Gestaltung auch Produkt- und Verbrauchsinformationen auf den Folienbeutel vorhanden sein müssen.With regard to recycling, single-variety and unprinted plastic waste is particularly advantageous. On the other hand, however, there is a need for a high-quality appearance in foil bags and in particular in foil packaging bags, with product and consumption information also having to be present on the foil bag in addition to an attractive graphic design.
Um diesen Anforderungen gerecht zu werden, sind aus dem Stand der Technik unterschiedliche und teils gegenläufige Ansätze bekannt.In order to meet these requirements, different and sometimes contradictory approaches are known from the prior art.
Gemäß
Darüber hinaus sind mehrschichtige Folienbeutel und Folienverpackungen bekannt, bei denen einzelne Schichten peelbar, d. h. voneinander trennbar verbunden sind. Es werden dabei Befestigungsnähte erzeugt, deren Verbundhaftung so eingestellt ist, dass diese Befestigungsnähte bei dem Ausüben einer Zugkraft an der Kontaktfläche der aufeinanderfolgenden Schichten getrennt wird. Verschiedene Ausführungsformen solcher Folienbeutel und Folienverpackungen sind beispielsweis in
Ein gattungsgemäßer Folienbeutel ist dagegen aus
Wenn der bekannte gattungsgemäße Folienbeutel entleert ist, kann für ein optimiertes Recycling der größte Teil des bedruckten Materialabschnittes entlang von Schwächungslinien abgerissen werden, welche direkt benachbart zu den Siegelnähten an den Längskanten verlaufen. Lediglich unmittelbar an den Heißsiegelnähten verbleiben schmale Ränder des Materialabschnitts. Wenn der Materialabschnitt dort bewusst nicht bedruckt ist, ist der nach einem Abreißen des Materialabschnittes verbleibende Beutelkörper völlig unbedruckt. Insbesondere bei einer sortenreinen Ausgestaltung ist dann ein einfaches Recycling möglich.When the known film bag of the generic type is emptied, the majority of the printed material section can be removed for optimized recycling be torn along lines of weakness which run directly adjacent to the sealing seams on the longitudinal edges. Narrow edges of the material section remain only directly at the heat-sealed seams. If the material section is deliberately not printed there, the bag body remaining after the material section has been torn off is completely unprinted. Simple recycling is then possible, particularly in the case of a single-variety configuration.
Vor diesem Hintergrund liegt der vorliegenden Erfindung die Aufgabe zugrunde, einen Folienbeutel anzugeben, der ein hochwertiges Erscheinungsbild aufweist, gute Funktionseigenschaften aufweist und ein verbessertes Recycling ermöglicht.Against this background, the present invention is based on the object of specifying a film bag that has a high-quality appearance, has good functional properties and enables improved recycling.
Gegenstand der Erfindung und Lösung der Aufgabe ist ein Folienbeutel gemäß Patentanspruch 1.The object of the invention and the solution to the problem is a film bag according to
Ausgehend von einem gattungsgemäßen Folienbeutel ist demnach vorgesehen, dass sich der Materialabschnitt über zumindest 80 % der Fläche der zugeordneten Frontwand erstreckt und die Verbindungsnaht rahmenförmig geschlossen um einen Rand des Materialabschnitts umläuft. Es wird also eine durchgehende Verbindungsnaht bereitgestellt, die nicht auftrennbar ist. Während des Transports, der Lagerung und der Benutzung des Folienbeutels ist somit der bedruckte Materialabschnitt sicher festgehalten.Based on a foil bag of this type, provision is made for the material section to extend over at least 80% of the area of the associated front wall and for the connecting seam to run around an edge of the material section in a closed frame-like manner. A continuous connecting seam is thus provided which cannot be separated. The printed section of material is thus held securely during transport, storage and use of the film bag.
Während gemäß
Durch die rahmenförmig geschlossene, durchgehende Verbindungsnaht wird auch die Gefahr einer Verschmutzung zwischen dem Materialabschnitt und der zugeordneten Frontwand vermieden oder zumindest deutlich reduziert. Dies gilt selbst dann, wenn gemäß einer nachfolgend noch näher beschriebenen Variante der Materialabschnitt innerhalb der rahmenförmig geschlossenen Verbindungsnaht eine Öffnung aufweist, weil bei den typischen Anwendungsfällen während der Lagerung, des Transportes und auch der Benutzung des Folienbeutels die Randbereiche einer größeren Verschmutzungsgefahr ausgesetzt sind.The continuous connecting seam closed in the form of a frame also avoids or at least significantly reduces the risk of soiling between the material section and the associated front wall. This applies even if, according to a variant described in more detail below, the material section has an opening within the frame-like closed connecting seam, because in typical applications during storage, transport and also use of the film bag, the edge areas are exposed to a greater risk of contamination.
Obwohl der Materialabschnitt durch die rahmenförmig geschlossene, durchgehende Verbindungsnaht an der zugeordneten Frontwand befestigt ist, können durch geeignete Maßnahmen die Beutelfolie einerseits und zumindest ein Teil des Materialabschnittes nach der Benutzung des Folienbeutels getrennt voneinander recycelt werden.Although the material section is attached to the assigned front wall by the frame-like closed, continuous connecting seam, suitable measures can be taken to allow the bag film on the one hand and at least part of the material section to be recycled separately after the film bag has been used.
Beispielsweise ist es bekannt, Kunststoffabfälle bei ihrer Aufbereitung zu Schreddern, wobei dann durch geeignete Maßnahmen eine Separierung zwischen der Beutelfolie und dem Materialabschnitt erfolgen kann. Dabei wird auch ausgenutzt, dass der Materialabschnitt und die zugeordnete Frontwand bereichsweise unverbunden sind.For example, it is known to shred plastic waste during its processing, in which case suitable measures can then be used to separate the bag film and the material section. This also makes use of the fact that the material section and the assigned front wall are not connected in certain areas.
Insbesondere ist vorzugsweise vorgesehen, dass der Materialabschnitt innerhalb der Verbindungsnaht im Wesentlichen unverbunden mit der zugeordneten Frontwand ist. Nach einem Zerkleinern des Folienbeutels werden zumindest an den unverbundenen Bereichen separate Partikel der Beutelfolie einerseits sowie des Materialabschnitts andererseits gebildet. Eine Separierung ist dann mit technischen Mitteln möglich. Beispielsweise kann durch optische Einrichtungen bei den einzelnen Partikeln festgestellt werden, ob diese mit einer Bedruckung versehen sind, so dass auf dieser Basis eine geeignete Sortierung möglich ist.In particular, it is preferably provided that the material section is essentially unconnected to the associated front wall within the connecting seam. After crushing the foil bag at least separate particles of the bag film on the one hand and of the material section on the other are formed in the unconnected areas. A separation is then possible with technical means. For example, optical devices can be used to determine whether the individual particles are printed, so that suitable sorting is possible on this basis.
Darüber hinaus sind andere technische Separierverfahren denkbar. Eine Sortierung kann beispielsweise auch durch ein Windsichten erfolgen, wenn die Beutelfolie einerseits und der Materialabschnitt andererseits bei einer vergleichbaren Dichte der jeweils eingesetzten Materialien eine ausreichend unterschiedliche Dicke aufweisen. Bei typischen für Folienbeutel eingesetzten Polymeren liegt die Dichte beispielsweise in einem Bereich zwischen 0,9 g/cm3 und 1 g/cm3, beispielsweise zwischen 0,92 g/cm3 und 0,97 g/cm3. Wenn dann aus der Beutelfolie einerseits und dem bedruckten Materialabschnitt andererseits Partikel mit einer gleichen Fläche geschnitten werden, so hängt bei einer vergleichbaren Dichte der Materialien das Gewicht der unterschiedlichen Partikel im Wesentlichen von der Dicke ab. Durch ein Windsichten können dann die unterschiedlichen Partikel voneinander separiert werden. Dabei ist auch zu berücksichtigen, dass bei der typischen Partikelgröße im Bereich von einem oder mehreren Quadratzentimetern die Dichte für den Luftwiderstand bei einem Sortieren mittels Windsichten weitgehend vernachlässigbar ist, so dass tatsächlich die Dicke und somit das unterschiedliche Gewicht der verschiedenen Partikel ein geeignetes Sortierkriterium darstellt.In addition, other technical separation methods are conceivable. Sorting can also be carried out, for example, by air separation if the bag film on the one hand and the material section on the other hand have a sufficiently different thickness with a comparable density of the materials used in each case. In the case of typical polymers used for foil bags, the density is, for example, in a range between 0.9 g/cm 3 and 1 g/cm 3 , for example between 0.92 g/cm 3 and 0.97 g/cm 3 . If particles with the same area are then cut from the bag film on the one hand and the printed material section on the other hand, the weight of the different particles essentially depends on the thickness given a comparable density of the materials. The different particles can then be separated from one another by air classification. It must also be taken into account that with the typical particle size in the range of one or more square centimeters, the density for the air resistance is largely negligible when sorting by air classifiers, so that the thickness and thus the different weights of the different particles actually represent a suitable sorting criterion.
Insbesondere kann ausreichend sein, wenn das Dickenverhältnis der Beutelfolie zu dem Materialabschnitt zumindest 3:2 beträgt, wobei ein Dickenverhältnis zwischen 2:1 und 6:1 aus praktischer Sicht besonders bevorzugt ist.In particular, it can be sufficient if the thickness ratio of the bag film to the material section is at least 3:2, with a thickness ratio between 2:1 and 6:1 being particularly preferred from a practical point of view.
Um in der beschriebenen Weise die Beutelfolie als hochwertiges RecyclingMaterial bereitzustellen, ist die Beutelfolie zweckmäßigerweise unbedruckt. Wenn jedoch im Rahmen der zuvor beschriebenen Maßnahmen eine Separierung von Partikeln nach einem Schreddern des Folienbeutels durch optische Mittel erfolgt, könnten auch bedruckte Teil der Beutefolie aussortiert werden, so dass dann auch eine zuverlässige Aufteilung in eine hochwertige sowie eine weniger hochwertige Partikelfraktion erfolgen kann. Allerdings würde sich dann der Nachteil ergeben, dass mit den bedruckten Abschnitten der Beutelfolie aufgrund der größeren Dicke relativ viel Material der weniger hochwertigen Fraktion zugeordnet wird.In order to provide the bag film as a high-quality recycling material in the manner described, the bag film is expediently unprinted. If, however, as part of the measures described above, particles are separated by optical means after the film bag has been shredded, printed parts of the bag film could also be sorted out, so that a reliable division into a high-quality and a less high-quality particle fraction can then take place. However, the disadvantage would then arise that with the printed sections of the bag film, due to the greater thickness, a relatively large amount of material would be assigned to the less valuable fraction.
Grundsätzlich könnte die Beutelfolie mit einer Druckfarbe bedruckt sein, die beispielsweise wasserlöslich ist. Eine solche Ausgestaltung ist auch deshalb denkbar, weil die Beutelfolie zunächst von dem darauf angeordneten Materialabschnitt gegenüber Umwelteinflüssen gut geschützt ist. Schließlich ist es auch denkbar, dass lediglich kleine Bereiche der Beutelfolie mit einem Aufdruck versehen ist, der zu keiner wesentlichen Beeinträchtigung der entsprechenden Partikelfraktion führt. Beispielsweise können sehr kleine Aufdrucke im Sinne von Positioniermarken oder dergleichen für den Herstellungsprozess zweckmäßig sein, ohne dass dadurch das entsprechende Recyclingmaterial übermäßig beeinträchtigt ist.In principle, the bag film could be printed with a printing ink that is water-soluble, for example. Such a configuration is also conceivable because the bag film is initially well protected from environmental influences by the material section arranged on it. Finally, it is also conceivable that only small areas of the bag film are provided with an imprint that does not lead to any significant impairment of the corresponding particle fraction. For example, very small imprints in the sense of positioning marks or the like can be expedient for the manufacturing process without the corresponding recycling material being excessively impaired as a result.
Trotz dieser grundsätzlich in Betracht kommenden Varianten ist jedoch bei vielen Ausgestaltungen eine Bedruckung der Beutelfolie nicht notwendig und somit auch nicht vorgesehen.In spite of these variants that are fundamentally possible, printing on the bag film is not necessary in many configurations and is therefore not intended.
Wie zuvor beschrieben, kann eine maschinelle Aufteilung zwischen Beutelfolie und Materialabschnitt im Zuge eines Recyclingprozesses erfolgen. Zusätzlich oder alternativ ist es jedoch auch von Vorteil, wenn bereits manuell, insbesondere durch einen Benutzer nach der Entleerung des Folienbeutels, eine Separierung erfolgen kann. Dabei ist zu beachten, dass seitens der Benutzer eine steigende Bereitschaft zu einem verantwortungsvollen und umweltschonenden Verhalten beobachtet wird, wobei entsprechende Produkte gerade auch als vorteilhaft angesehen werden.As described above, a mechanical division between bag film and material section can take place in the course of a recycling process. In addition or as an alternative, however, it is also advantageous if already manually, in particular by a user after emptying the film bag, a separation can take place. It should be noted that users are increasingly willing to behave in a responsible and environmentally friendly manner, with the corresponding products also being viewed as beneficial.
So ist gemäß einer bevorzugten Ausgestaltung der Erfindung vorgesehen, dass der Materialabschnitt benachbart zu der Befestigungsnaht einen Schwächungsbereich aufweist, um durch eine Materialtrennung innerhalb des Materialabschnittes einen an der Verbindungsnaht befestigten Rahmen von einem Mittelstück des Materialabschnittes trennen zu können. Es ist somit nach der Benutzung des Folienbeutels für einen Benutzer möglich, das Mittelstück bewusst von dem Beutelkörper abzureißen, so dass dann bereits von vornherein eine getrennte Sortierung und Entsorgung möglich ist.According to a preferred embodiment of the invention, the material section has a weakened area adjacent to the fastening seam in order to be able to separate a frame fastened to the connecting seam from a central piece of the material section by separating the material within the material section. It is thus possible for a user, after using the film bag, to consciously tear off the center piece from the bag body, so that separate sorting and disposal is then possible from the outset.
Dabei ist zweckmäßigerweise vorgesehen, dass der Materialabschnitt nur an dem Mittelstück bedruckt ist, so dass dann der auf der zugeordneten Frontwand zurückbleibende Rahmen entlang der Verbindungsnaht unbedruckt ist. So ist dann der gesamte verbleibende Beutelkörper nicht mit Druckfarbe versehen und kann als besonders hochwertiges Recyclingprodukt genutzt werden. Dies gilt insbesondere dann, wenn - wie nachfolgend noch weiter beschrieben - die Beutelfolie und der Materialabschnitt sortenrein aus einem Polymer, insbesondere einem Polyolefin gebildet sind. Als sortenrein wird in diesem Zusammenhang insbesondere verstanden, wenn die verschiedenen Bestandteile beispielsweise übereinstimmend aus Polyethylen oder übereinstimmend aus Polypropylen gebildet sind, wobei Polyethylen bzw. Polypropylen unterschiedlicher Dichte wie beispielsweise ULDPE, LDPE, LLDPE, MDPE, LMDPE, HDPE als Gemisch gemeinsam recycelt werden können. Grundsätzlich können aber auch als weitere Einschränkung übereinstimmende oder nur relativ enge Dichten bzw. Dichtebereiche vorgesehen sein.In this case, it is expediently provided that the material section is only printed on the central piece, so that the frame remaining on the associated front wall is then unprinted along the connecting seam. The entire remaining body of the bag is then not provided with printing ink and can be used as a particularly high-quality recycling product. This applies in particular when--as described in more detail below--the bag film and the material section are formed from a single type of polymer, in particular a polyolefin. In this context, single-variety is understood in particular when the various components are made of polyethylene or polypropylene, for example, with polyethylene or polypropylene of different densities such as ULDPE, LDPE, LLDPE, MDPE, LMDPE, HDPE being able to be recycled together as a mixture . Basically can but also, as a further restriction, matching or only relatively narrow densities or density ranges can be provided.
Auch wenn gemäß einer zuvor erläuterten Variante der Erfindung eine Auftrennung erst durch ein Zerkleinern und dann geeignete maschinelle Recyclingverfahren erreicht werden soll, ist bei dem Materialabschnitt zweckmäßig der Bereich der Verbindungsnaht unbedruckt, um dann auch bei den dort gebildeten Partikeln ein hochwertiges Recycling zu ermöglichen.Even if, according to a variant of the invention explained above, separation is first to be achieved by crushing and then suitable mechanical recycling processes, the area of the connecting seam is expediently unprinted in the material section in order to then also enable high-quality recycling of the particles formed there.
Wenn dagegen gemäß der alternativen Variante das Mittelstück von einem Benutzer herausgerissen werden kann, so können hierzu verschiedene erleichternde Maßnahmen vorgesehen sein.If, on the other hand, according to the alternative variant, the center piece can be torn out by a user, various facilitating measures can be provided for this purpose.
Beispielsweise ist gemäß einer bevorzugten Ausgestaltung der Erfindung vorgesehen, dass der Schwächungsbereich eine Schwächungslinie aufweist bzw. von einer Schwächungslinie gebildet ist. Eine Schwächung kann sich zunächst dadurch ergeben, dass das Polymermaterial des Materialabschnittes allein aufgrund der Bildung der Verbindungsnaht geschwächt ist. Dies trifft insbesondere zu, wenn die Verbindungsnaht gemäß einer bevorzugten Ausgestaltung der Erfindung als Heißsiegelnaht gebildet ist. Bei dem Heißsiegeln kann benachbart zu der Heißsiegelnaht alleine durch die Temperatureinwirkung als auch die mechanische Beaufschlagung der Siegelbacken eine Schwächung resultieren. So wird häufig an der Nahtwurzel, das heißt also an dem seitlichen Rand einer solchen Heißsiegelnaht eine geringe Festigkeit beobachtet.For example, according to a preferred embodiment of the invention, it is provided that the weakened area has a weakened line or is formed by a weakened line. A weakening can initially result from the fact that the polymer material of the material section is weakened solely due to the formation of the connecting seam. This applies in particular if the connecting seam is formed as a heat-sealed seam according to a preferred embodiment of the invention. During heat sealing, a weakening can result adjacent to the heat sealing seam solely due to the effect of temperature and the mechanical stress on the sealing jaws. Low strength is often observed at the root of the seam, that is to say at the lateral edge of such a heat-sealed seam.
Um ein leichteres Trennen zu ermöglichen kann aber gerade auch eine Schwächungslinie bewusst gebildet werden. Dabei kann es sich ohne Einschränkung um eine Perforation, eine Einprägung, einen den Materialabschnitt nicht vollständig durchtrennenden Einschnitt, eine Laserlinie oder dergleichen handeln. Durch einen Laser kann das Material in seiner polymeren Struktur geschwächt und/oder teilweise eingeschnitten bzw. abgetragen werden.In order to enable easier separation, however, a weakening line can also be deliberately formed. This can be, without limitation, a perforation, an embossing, a section of material non-completely severing incision, laser line, or the like. The material can be weakened in its polymeric structure and/or partially cut or removed by a laser.
Um das Abreißen des Materialabschnittes zu erleichtern kann zusätzlich oder alternativ auch innerhalb des Rahmens eine Eingriffsöffnung in dem Materialabschnitt vorgesehen sein. Beispielsweise kann ein innerhalb des Rahmens liegender Bereich des Materialabschnittes ausgestanzt sein. Eine solche Eingriffsöffnung kann beispielsweise so groß sein, dass dort ein Finger von einem Benutzer eingeführt werden kann. Wenn ein Benutzer dann in diese Eingriffsöffnung eingreift, kann leicht das Mittelstück abgerissen werden. Die Eingriffsöffnung ist dabei zweckmäßigerweise benachbart zu der Verbindungsnaht, insbesondere in einem Eckbereich angeordnet. Da die Eingriffsöffnung sich nicht unmittelbar am Rand der Frontwand befindet, sondern innerhalb des Rahmens angeordnet ist, wird ein guter Schutz gegen ein versehentliches Abreißen erreicht.In order to make it easier to tear off the material section, an access opening can additionally or alternatively also be provided in the material section within the frame. For example, an area of the material section lying within the frame can be punched out. Such an access opening can, for example, be large enough for a user to insert a finger there. If a user then engages in this engagement opening, the middle piece can easily be torn off. The access opening is expediently arranged adjacent to the connecting seam, in particular in a corner area. Since the access opening is not located directly on the edge of the front wall, but is arranged inside the frame, good protection against accidental tearing off is achieved.
Gemäß einer weiteren Variante der Erfindung kann auf dem Materialabschnitt innerhalb des Rahmens eine separate Abreißlasche befestigt sein. Die Abreißlasche kann beispielsweise von einem Folienstreifen gebildet sein, der an einem Ende auf dem Materialabschnitt fest aufgeklebt oder aufgesiegelt ist und an seinem anderen Ende von einem Benutzer gegriffen werden kann. Entsprechende Abreißlaschen sind aus dem Verpackungsbereich, beispielsweise von Verpackungen für Taschentücher, bekannt.According to a further variant of the invention, a separate tear-off tab can be attached to the material section inside the frame. The tear-off tab can be formed, for example, from a foil strip which is firmly glued or sealed onto the material section at one end and can be gripped by a user at its other end. Corresponding tear-off tabs are known from the packaging sector, for example from packaging for handkerchiefs.
Im Rahmen der Erfindung ist die Beutelfolie wesentlich für die strukturelle Stabilität und Form des Beutelkörpers, während der bedruckte Materialabschnitt im Wesentlichen als eine Art Informationsträger dient und nicht wesentlich zu einer Stabilisierung beitragen muss. Der bedruckte Materialabschnitt kann somit vergleichsweise dünn ausgeführt sein, wobei die Dicke beispielsweise zwischen 10 µm und 80 µm, insbesondere zwischen 20 µm und 50 µm liegen kann.In the context of the invention, the bag film is essential for the structural stability and shape of the bag body, while the printed material portion essentially serves as a type of information carrier and not essential must contribute to stabilization. The printed material section can thus be made comparatively thin, with the thickness being for example between 10 μm and 80 μm, in particular between 20 μm and 50 μm.
In einer besonders einfachen Ausgestaltung der Erfindung ist der Materialabschnitt einschichtig von einer Monofolie gebildet, welche dann sowohl innenliegend in Richtung der zugeordneten Frontwand oder auch außenliegend bedruckt sein kann. Um die Bedruckbarkeit, die mechanischen Eigenschaften und/oder die optischen Eigenschaften zu verbessern, kann die den Materialabschnitt bildende Folie oder zumindest eine Schicht einer solchen Folie monoaxial oder biaxial orientiert sein.In a particularly simple embodiment of the invention, the material section is formed in one layer from a monofoil, which can then be printed both on the inside in the direction of the associated front wall or on the outside. In order to improve the printability, the mechanical properties and/or the optical properties, the film forming the material section or at least one layer of such a film can be monoaxially or biaxially oriented.
Trotz der insgesamt geringen Dicke kommt auch ein zumindest zweischichtiger Aufbau des Materialabschnittes mit einer Siegelschicht und einer Außenschicht in Betracht. Die Siegelschicht und die Außenschicht können auch sortenrein beispielsweise aus Polyethylen oder Polypropylen gebildet sein, wobei jedoch im Hinblick auf die unterschiedlichen Anforderungen unterschiedliche Typen bzw. Blends eingesetzt werden können. Wenn beispielsweise die Siegelschicht gegenüber der Außenschicht einen geringen Schmelz- bzw. Erweichungspunkt aufweist, wird durch die Siegelnaht das Erscheinungsbild des Folienbeutels an der Außenseite bei einer geeigneten Siegeltemperatur nicht beeinträchtigt.Despite the overall small thickness, an at least two-layer structure of the material section with a sealing layer and an outer layer can also be considered. The sealing layer and the outer layer can also be formed from a single type of polyethylene or polypropylene, for example, although different types or blends can be used with regard to the different requirements. If, for example, the sealing layer has a low melting or softening point compared to the outer layer, the appearance of the film bag on the outside is not impaired by the sealing seam at a suitable sealing temperature.
Bei einem zumindest zweischichtigen Aufbau kann der Materialabschnitt auch einen innenliegenden Aufdruck aufweisen, der zwischen der Siegelschicht und der Außenschicht an einem innenliegenden Übergang angeordnet ist. Selbstverständlich können auch noch weitere Schichten vorgesehen sein.In the case of an at least two-layer structure, the material section can also have an internal imprint which is arranged between the sealing layer and the outer layer at an internal transition. Further layers can of course also be provided.
Bei einem zumindest zweischichtigen Aufbau des Materialabschnittes ergeben sich auch noch weitere Varianten, um ein leichtes Abreißen des Mittelstücks wie zuvor beschrieben zu ermöglichen. So kann vorgesehen sein, dass die Siegelschicht und die Außenschicht gegebenenfalls unter Einbindung weiterer Schichten in einem oberhalb eines Teilstückes der Verbindungsnaht angeordneten Randteilabschnitt unverbunden oder peelbar verbunden sind, wobei die Siegelschicht und die Außenschicht gegebenenfalls unter Einbindung weiterer Schichten angrenzend an den Randteilabschnitt derart permanent verbunden sind, dass bei einem Abreißen des Mittelstücks des Materialabschnittes von der zugeordneten Frontwand, ausgehend von dem Randabschnitt, die Siegelschicht zerreißt und somit eine Schichttrennung an der permanenten Verbindung vermieden wird. Das beschriebene Verhalten wird erreicht, wenn die Verbundfestigkeit der im Schichtverbund aufeinanderfolgenden Schichten größer ist als die Festigkeit der Siegelschicht entlang der Dicke, wozu dort auch gegebenenfalls eine Schwächung und insbesondere eine Schwächungslinie vorgesehen sein kann. Im Rahmen der beschriebenen Ausgestaltung wird innerhalb der Siegelschicht dann ein Kohäsionsbruch anstelle eines Adhäsionsbruches erreicht.In the case of an at least two-layer structure of the material section, there are also further variants in order to be able to tear off the center piece easily enable as previously described. Provision can be made for the sealing layer and the outer layer to be connected in a non-connected or peelable manner, optionally with the integration of further layers, in a partial edge section arranged above a section of the connecting seam, with the sealing layer and the outer layer being permanently connected in this way, optionally with the integration of further layers adjacent to the partial edge section that when the center piece of the material section is torn off from the associated front wall, starting from the edge section, the sealing layer tears and thus a layer separation at the permanent connection is avoided. The behavior described is achieved when the bond strength of the successive layers in the laminate is greater than the strength of the sealing layer along the thickness, for which purpose a weakening and in particular a weakening line can also be provided there if necessary. Within the scope of the embodiment described, a cohesive fracture instead of an adhesive fracture is then achieved within the sealing layer.
Gemäß einer bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass der Materialabschnitt und die zugeordnete Frontwand ausschließlich an der Verbindungsnaht miteinander verbunden sind. Der gesamte innerhalb der Verbindungsnaht liegende Bereich des Materialabschnittes kann dann durch ein Abreißen oder ein Zerkleinern leicht separiert werden. Alternativ ist auch nicht ausgeschlossen, dass innerhalb der umlaufend geschlossenen Verbindungsnaht noch einzelne Verbindungspunkte zur Stabilisierung vorgesehen sind. Besonders bevorzugt ist aber zumindest vorgesehen, dass mehr als 80 % und insbesondere mehr als 90 % der innerhalb der Verbindungsnaht verbleibenden Fläche zwischen dem Materialabschnitt und der zugeordneten Frontwand unverbunden ist.According to a preferred embodiment of the invention, it is provided that the material section and the associated front wall are connected to one another exclusively at the connecting seam. The entire area of the material section lying within the connecting seam can then be easily separated by tearing it off or crushing it. Alternatively, it is also not excluded that individual connection points are provided for stabilization within the connection seam that is closed all around. However, it is particularly preferably provided that more than 80% and in particular more than 90% of the area remaining within the connecting seam between the material section and the associated front wall is unconnected.
Wenn einzelne Verbindungspunkte beispielsweise durch Heißsiegeln gebildet sind, so können diese ohne Einschränkung permanent oder peelbar ausgeführt sein. Bei üblichen heißsiegelbaren Materialien ist dann eine permanente Verbindung, wie auch an der Verbindungsnaht selbst, leicht zu erzeugen. Zweckmäßigerweise wird der Aufdruck des Materialabschnittes auch an solchen Verbindungspunkten ausgespart, damit dort keine unerwünschten Farbreste an der Beutelfolie verbleiben bzw. mit der Beutelfolie verbunden sind.If individual connection points are formed by heat sealing, for example, they can be permanent or peelable without limitation. In the case of conventional heat-sealable materials, a permanent connection is then easy to produce, as is the case with the connecting seam itself. Expediently, the imprint of the material section is also omitted at such connection points, so that no unwanted color residues remain on the bag film or are connected to the bag film.
Die Verbindungsnaht ist vorzugsweise als Heißsiegelnaht ausgeführt. Die typische Breite der Verbindungsnaht liegt zwischen 1,5 mm und 10 mm, insbesondere zwischen 2 mm und 8 mm.The connecting seam is preferably designed as a heat-sealed seam. The typical width of the connecting seam is between 1.5 mm and 10 mm, in particular between 2 mm and 8 mm.
Gemäß einer Weiterbildung der Erfindung ist die Beutelfolie sortenrein aus Polyolefin gebildet, wobei jedoch auch dünne Funktions- und Barriereschichten möglich sind. Besonders bevorzugt sind die Beutelfolie und der Materialabschnitt sortenrein aus Polyolefin, beispielsweise sortenrein aus Polyethylen oder sortenrein aus Polypropylen gebildet.According to a further development of the invention, the bag film is formed from a single type of polyolefin, although thin functional and barrier layers are also possible. The bag film and the material section are particularly preferably made of a single type of polyolefin, for example of a single type of polyethylene or of a single type of polypropylene.
Die Dicke der Beutelfolie liegt typischerweise zwischen 50 µm und 300 µm, bevorzugt zwischen 80 µm und 170 µm.The thickness of the bag film is typically between 50 μm and 300 μm, preferably between 80 μm and 170 μm.
Grundsätzlich kann vorgesehen sein, dass der Materialabschnitt sich nur über eine Teilfläche der Frontwand erstreckt und dort in der beschriebenen Weise rahmenförmig mit der durchgehenden Verbindungsnaht befestigt ist. Besonders bevorzugt erstreckt sich der Materialabschnitt über die gesamte zugeordnete Frontwand oder im Wesentlichen über die gesamte zugeordnete Frontwand, so dass insgesamt eine doppelwandige Ausgestaltung resultiert.In principle, it can be provided that the material section only extends over a partial area of the front wall and is fastened there in the manner described in the manner of a frame with the continuous connecting seam. The material section particularly preferably extends over the entire assigned front wall or essentially over the entire assigned front wall, resulting in a double-walled design overall.
Grundsätzlich kann es ausreichend sein, wenn an einer der beiden Frontwände in der beschriebenen Weise der bedruckte Materialabschnitt vorgesehen ist, wodurch dann auch nur ein relativ geringer Anteil an bedruckten und somit nur bedingt recycelbarem Material vorliegt. Grundsätzlich können aber auch beide Frontwände mit einem zugeordneten Materialabschnitt in der beschriebenen Weise versehen sein, so dass dann der erfindungsgemäße Folienbeutel zumindest auf einen ersten Blick nicht von einem herkömmlichen Folienbeutel unterschieden werden kann.In principle, it can be sufficient if the printed material section is provided on one of the two front walls in the manner described, as a result of which there is then only a relatively small proportion of printed and therefore only partially recyclable material. In principle, however, both front walls can also be provided with an associated material section in the manner described, so that the film bag according to the invention cannot be distinguished from a conventional film bag, at least at first glance.
Wie bereits zuvor beschrieben, ist die Beutelfolie vorzugsweise unbedruckt. Davon ausgehend kann die Beutelfolie selbst jedoch weitgehend klar, opak oder auch undurchsichtig, insbesondere weiß eingefärbt sein. Viele Kunststoffmaterialien sind in ihrer Reinform klar oder opak, so dass dieses Erscheinungsbild ohne die Zugabe von Zusatzstoffen resultiert. Im Hinblick auf ein Recycling kann aber auch ein für viele Anwendungen unbedenkliches Färbemittel wie beispielsweise Titandioxid als Weißbatch vorgesehen sein. Ein solcher Weißbatch ist auch hinsichtlich eines Recycelns insbesondere dann unkritisch, wenn das bei dem Recycling zu bildende Rohprodukt selbst einheitlich eingefärbt werden soll, wobei hierzu Farbpartikel wie Titandioxid regelmäßig eingesetzt werden.As already described above, the bag film is preferably unprinted. Proceeding from this, however, the bag film itself can be colored to a large extent clear, opaque or non-transparent, in particular white. Many plastic materials are clear or opaque in their pure form, so that this appearance results without the addition of additives. With regard to recycling, however, a colorant that is harmless for many applications, such as, for example, titanium dioxide, can also be provided as a white batch. Such a white batch is also uncritical with regard to recycling, in particular when the raw product to be formed during recycling itself is to be colored uniformly, color particles such as titanium dioxide being regularly used for this purpose.
Grundsätzlich liegt es aber auch im Ermessen des Fachmannes, an sich unbedruckte Partikel oder Folienabschnitte bei dem Sortieren danach zu gruppieren, ob diese klar, trüb oder durchgehend, insbesondere weiß eingefärbt sind.In principle, however, it is also at the discretion of the person skilled in the art to group unprinted particles or film sections during sorting according to whether they are clear, cloudy or colored throughout, in particular white.
In bekannter Weise kann der Folienbeutel auch Funktionselemente wie beispielsweise Druckverschlüsse (Zipper), Reißverschlüsse (Slider) oder auch Ausgießtüllen aufweisen. Entsprechende Funktionselemente können ohne weiteres aus dem gleichen Material wie die Beutelfolie gebildet sein, so dass diese dann ein Recycling nicht behindern.In a known manner, the film bag can also have functional elements such as pressure fasteners (zippers), zip fasteners (sliders) or pouring spouts. Corresponding functional elements can without further be formed from the same material as the bag film, so that they then do not hinder recycling.
Erfindungsgemäß umfasst der Folienbeutel einerseits die Beutelfolie und andererseits an zumindest einer aus der Beutelfolie gebildeten Frontwand den bedruckten, rahmenförmig befestigten Materialabschnitt. Wie bereits zuvor erläutert, ist der Materialabschnitt üblicherweise auch von einer herkömmlichen Folie gebildet. Im Rahmen der Erfindung können dann die separat gefertigte und bereitgestellte Beutelfolie einerseits und die Folie zur Bildung des Materialabschnitts andererseits unterschiedlich zugeführt und gehandhabt werden.According to the invention, the film bag comprises, on the one hand, the bag film and, on the other hand, the printed material section fastened in the form of a frame on at least one front wall formed from the bag film. As already explained above, the material section is usually also formed by a conventional foil. Within the scope of the invention, the separately manufactured and provided bag film on the one hand and the film for forming the material section on the other hand can then be supplied and handled differently.
So ist es möglich, dass die Beutelfolie und die Folie zur Bildung des Materialabschnitts separat zulaufen und erst bei dem Bilden des eigentlichen Beutelkörpers durch Heißsiegeln eine Verbindung erfolgt. Dabei kann der Beutelkörper aus einem einzigen Materialzuschnitt der Beutelfolie oder auch aus mehreren Abschnitten der Beutelfolie gebildet werden. Wenn der Folienbeutel Seitenfalten aufweist, so können diese Seitenfalten entweder aus einem einzigen Materialzuschnitt durch Falten eingelegt werden oder bei dem Zusammenfügen mehrerer Abschnitte als separate Streifen vorgesehen sein.It is thus possible for the bag film and the film for forming the material section to run in separately and for a connection to take place only when the actual bag body is formed by heat sealing. The bag body can be formed from a single material cut of the bag film or also from several sections of the bag film. If the foil bag has side folds, these side folds can either be inserted by folding from a single material cut or can be provided as separate strips when several sections are joined together.
Gemäß einer alternativen Ausgestaltung der Erfindung ist es auch möglich, zunächst die Beutelfolie mit der Folie zur Bildung des Materialabschnittes zu verbinden und erst dann den Beutel fertig auszuformen. Eine solche vorgelagerte Verbindung der Beutelfolie sowie der weiteren Folie kann dabei auch durch Klebstoff erfolgen, sodass dann für die Verbindung dort, wo Klebstoff vorgesehen ist, kein zusätzliches Heißsiegeln mehr notwendig ist. Beispielsweise können in einer Maschinenrichtung die Beutelfolie und eine Folie zur Bildung des Materialabschnitts mit Längsstreifen aus Klebstoff verbunden sein, wobei dann in Querrichtung je nach Prozessführung ebenfalls eine Verbindung durch Klebstoff oder eine Verbindung durch Heißsiegeln möglich ist.According to an alternative embodiment of the invention, it is also possible first to connect the bag film to the film to form the material section and only then to finish shaping the bag. Such an upstream connection of the bag film and the further film can also be effected by adhesive, so that no additional heat sealing is then necessary for the connection where adhesive is provided. For example, in a machine direction, the bag film and a film forming the section of material may have longitudinal stripes of adhesive be connected, in which case a connection by adhesive or a connection by heat sealing is also possible in the transverse direction, depending on the process control.
Folglich ist es somit im Rahmen der Erfindung auch möglich, dass die Verbindungsnaht an verschiedenen Teilstücken auf unterschiedlicher Weise gebildet ist. Erfindungswesentlich ist lediglich, dass die Verbindungsnaht permanent, nicht auftrennbar und insgesamt rahmenförmig geschlossen um den Rand des Materialabschnitts umläuft.Consequently, it is also possible within the scope of the invention for the connecting seam to be formed in different ways on different sections. All that is essential to the invention is that the connecting seam runs around the edge of the material section permanently, cannot be separated and is closed overall in the form of a frame.
Schließlich ist es grundsätzlich auch möglich, zunächst den eigentlichen Beutelkörper aus der Beutelfolie auszuformen und dann den Materialabschnitt nachträglich zu befestigen, wobei dann auch in der beschriebenen Weise eine rahmenförmig geschlossene Verbindungsnaht durch Heißsiegeln und/oder Klebstoff gebildet werden kann.Finally, it is fundamentally also possible to first form the actual bag body from the bag film and then to subsequently attach the material section, in which case a frame-shaped closed connecting seam can then also be formed by heat sealing and/or adhesive in the manner described.
Die Erfindung wird im Folgenden anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung erläutert. Es zeigen:
- Fig. 1A
- einen Folienbeutel in einer Draufsicht,
- Fig. 1B
- ein Schnitt entlang der Linie A-A der
Fig. 1A , - Fig. 2
- eine Schnittansicht eines Folienbeutels bei einer alternativen Ausgestaltung,
- Fig. 3
- eine alternative Ausgestaltung eines Folienbeutels in einer Perspektive,
- Fig. 4A und 4B
- der Folienbeutel gemäß der
Fig. 3 bei einem Aufreißen.
- Figure 1A
- a foil bag in a plan view,
- Figure 1B
- a cut along line AA of
Figure 1A , - 2
- a sectional view of a film bag in an alternative embodiment,
- 3
- an alternative embodiment of a foil bag in a perspective,
- Figures 4A and 4B
- the foil bag according to the
3 at a rupture.
Die
Der Materialabschnitt 3 weist eine geringere Dicke als die Beutelfolie, das heißt die zugeordnete Frontwand 1 auf.The
In dem dargestellten Ausführungsbeispiel erstrecken sich die Materialabschnitte 3 über die gesamte Fläche der jeweils zugeordneten Frontwand 1, so dass sich gemäß der
Gemäß der
Der die Frontwände 1 aufweisende Beutelkörper 2 sowie die Materialabschnitte 3 sind sortenrein aus einem Polyolefin, beispielsweise sortenrein aus Polyethylen oder sortenrein aus Polypropylen gebildet, wobei jedoch unterschiedliche Typen oder Blends in Betracht kommen. Exemplarisch kann die Beutelfolie, welche die Frontwände 1 bildet, aus Polyethylen mit einer Dicke von 100 µm gebildet sein, während die Materialabschnitte jeweils aus einem in einer Maschinenrichtung orientierten Polyethylen (MDO-PE) mit einer Dicke von 25 µm gebildet ist. Durch die Orientierung weisen die Materialabschnitte 3 gute mechanische Eigenschaften, ein hochwertiges Aussehen sowie eine gute Bedruckbarkeit auf. Zweckmäßigerweise sind die Materialabschnitte 3 gemäß der
Bei einem Zerkleinern des Folienbeutels für ein Recyceln werden Partikel mit einer Größe von typischerweise 1 cm2 oder einigen cm2 gebildet. Dort, wo die Frontwand 1 mit dem jeweiligen Materialabschnitt 3 unverbunden ist, werden also voneinander getrennte Partikel erzeugt, die dann durch geeignete Maßnahmen voneinander getrennt werden können. Aufgrund der ähnlichen Polymermaterialien und der daraus resultierenden etwa übereinstimmenden Dichte kann aufgrund des sehr großen Unterschiedes hinsichtlich der Dicke beispielsweise eine Trennung durch ein Windsichten erfolgen. Für die aus den Frontwänden 1 einerseits und den Materialabschnitten 3 andererseits gebildeten unterschiedlichen Partikel ergibt sich bei einem Windsichten in etwa der gleiche Luftwiderstand, wobei aufgrund der üblichen flockenförmigen Partikelform die Schichtdicke vernachlässigbar ist. Aufgrund der unterschiedlichen Dicke ergibt sich aber ein großer Gewichtsunterschied, der auf einfache Weise eine Separation ermöglicht.When crushing the foil bag for recycling, particles with a size of typically 1 cm 2 or a few cm 2 are formed. Where the
Die aus der Beutelfolie einerseits und dem Materialabschnitt 3 andererseits gebildeten Partikel können so leicht und zuverlässig voneinander separiert werden. Es ist darüber hinaus noch eine dritte Partikelfraktion zu berücksichtigen, bei denen in Bereichen der Verbindungsnaht 4 gemäß der
Bei einer Dicke von 25 µm der Materialabschnitte und 100 µm der Beutelfolie ergibt sich somit ein Anteil an hochwertigem, unbedrucktem Rezyklat von zumindest 80 %.With a thickness of 25 µm for the material sections and 100 µm for the bag film, this results in a proportion of high-quality, unprinted recyclate of at least 80%.
Anstelle einer Separierung bei einem maschinellen Recyclingprozess ist bei dem Ausführungsbeispiel gemäß der
Um das Abreißen des Mittelstücks 6 des Materialabschnittes 3 zu erleichtern, ist in dem Ausführungsbeispiel gemäß der
Die
Gemäß der
Gemäß dem Ausführungsbeispiel der
Die Verbundfestigkeit zwischen der Siegelschicht 14 und der Außenschicht 15 ist somit größer als die Festigkeit der Siegelschicht 14 entlang der Dicke, wozu grundsätzlich auch nicht dargestellte Schwächungslinien vorgesehen sein können. Im Rahmen der Erfindung wird also ein kontrollierter Kohäsionsbruch innerhalb der Siegelschicht 14 erreicht und an dem Mittelstück 6 ein Adhäsionsbruch zwischen der Siegelschicht 14 und der Außenschicht 15 bzw. einer dort vorgesehenen Schicht aus Kaschierklebstoff vermieden.The bond strength between the sealing
Auch gemäß der Ausgestaltung nach den
Claims (18)
- Film bag comprising a bag body (2) having at least two mutually opposite front walls (1) made of a bag film, wherein a printed material section (3) is fastened with a permanent non-separable connecting seam (4) to one of the front walls (1) and rests unconnected in some regions on the associated front wall (1), wherein the material section (3) has a smaller thickness than the bag film, characterized in that the material section (3) covers at least 80 % of the area of the associated front wall (1) and the connecting seam (4) runs in a frame shape in a closed manner around an edge of the material section (3).
- Film bag according to Claim 1, characterized in that the bag film is unprinted.
- Film bag according to Claim 1 or 2, characterized in that the material section (3) has an area of weakening adjacent to the fastening seam in order to be able to separate a frame (8) fastened to the connecting seam (4) from a central piece (6) of the material section (3) by a material separation inside the material section (3).
- Film bag according to Claim 3, characterized in that the area of weakening comprises a line of weakening (5) .
- Film bag according to Claim 3 or 4, characterized in that the material section (3) has an engagement opening (9) inside the frame (8).
- Film bag according to one of Claims 3 to 5, characterized in that a separate tear-off tab (10) is fastened on the material section (3) inside the frame (8).
- Film bag according to one of Claims 1 to 6, characterized in that the material section (3) has an at least two-layer structure with a seal layer (14) and an outer layer (15).
- Film bag according to Claim 7, characterized in that the material section (3) has an interior imprint (7) in the at least two-layer structure.
- Film bag according to Claim 7 or 8, characterized in that the seal layer (14) and the outer layer (15) are unconnected or connected peelably in an edge part section (13) arranged above a part piece of the connecting seam (4), wherein the seal layer (14) and the outer layer (15) adjacent to the edge part section (13) are connected permanently in such a manner that when tearing off the central piece (6) of the material section (3) from the associated front wall (1), starting from the edge part section (13), the seal layer (14) tears.
- Film bag according to one of Claims 1 to 9, characterized in that the bag film has at least twice the thickness of the material section (3).
- Film bag according to one of Claims 1 to 10, characterized in that the material section (3) is unprinted in the region of the connecting seam (4).
- Film bag according to one of Claims 1 to 11, characterized in that the connecting seam (4) is implemented as a heat seal seam.
- Film bag according to one of Claims 1 to 12, characterized in that the material section (3) and the associated front wall (1) are exclusively connected to one another at the connecting seam (4).
- Film bag according to one of Claims 1 to 13, characterized in that the connecting seam (4) has a width between 2 mm and 8 mm.
- Film bag according to one of Claims 1 to 14, characterized in that the bag film is formed of a single type of polyolefin.
- Film bag according to Claims 15, characterized in that the bag film and the material section (3) are formed from a single type of polyolefin.
- Film bag according to one of Claims 1 to 16, characterized in that respectively one material section (3) is provided on both front walls (1).
- Film bag according to one of Claims 1 to 17, characterized in that at least one functional element (12) is arranged on the bag body (2).
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DE102019117119.9A DE102019117119A1 (en) | 2019-06-25 | 2019-06-25 | Foil pouch |
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EP3757036A1 EP3757036A1 (en) | 2020-12-30 |
EP3757036B1 true EP3757036B1 (en) | 2023-05-24 |
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EP4342812A1 (en) | 2022-09-22 | 2024-03-27 | Mondi AG | Gusset bag |
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EP3594144A1 (en) * | 2018-07-13 | 2020-01-15 | Mondi AG | Recyclable bag |
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JPH0584640U (en) * | 1992-04-17 | 1993-11-16 | 株式会社吉野工業所 | Liquid storage bag for refill |
JPH082536A (en) * | 1994-06-16 | 1996-01-09 | Toppan Printing Co Ltd | Flexible packaging bag |
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DE102006029119A1 (en) * | 2006-06-22 | 2007-07-05 | Nordenia Deutschland Halle Gmbh Werk Steinfeld | Film bag, has folding edges between first lateral edge and the front surface and rear surface, which are stiffends by longitudinal sealed seams, which extend up to top sealing seam |
DE102010008706A1 (en) * | 2010-02-19 | 2010-11-04 | Nordenia Technologies Gmbh | Multi-layer plastic sheet used to make packaging in form of tear-open bags with predefined lines of weakness, contains polyolefin layers with and without substance absorbing laser energy |
ES2786093T3 (en) * | 2015-11-13 | 2020-10-08 | Mondi Ag | Film bag |
US20170190474A1 (en) * | 2015-12-30 | 2017-07-06 | Bizerba USA Inc. | Printable plastic food bag |
CN108602598A (en) * | 2016-07-06 | 2018-09-28 | 雀巢产品技术援助有限公司 | Recyclable flexible pouch and its production and application method |
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- 2020-05-29 EP EP20177532.7A patent/EP3757036B1/en active Active
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- 2020-05-29 HU HUE20177532A patent/HUE062562T2/en unknown
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FR2754210A1 (en) * | 1996-10-03 | 1998-04-10 | Plastiques C I M | Method of making packaging sachets |
EP3594144A1 (en) * | 2018-07-13 | 2020-01-15 | Mondi AG | Recyclable bag |
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HUE062562T2 (en) | 2023-11-28 |
PL3757036T3 (en) | 2023-08-28 |
EP3757036A1 (en) | 2020-12-30 |
DE102019117119A1 (en) | 2020-12-31 |
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