EP3511259A1 - Pochette, en particulier pochette d'expédition pourvue d'au moins un adhésif - Google Patents

Pochette, en particulier pochette d'expédition pourvue d'au moins un adhésif Download PDF

Info

Publication number
EP3511259A1
EP3511259A1 EP18151148.6A EP18151148A EP3511259A1 EP 3511259 A1 EP3511259 A1 EP 3511259A1 EP 18151148 A EP18151148 A EP 18151148A EP 3511259 A1 EP3511259 A1 EP 3511259A1
Authority
EP
European Patent Office
Prior art keywords
bag
adhesive
front wall
wall
rear wall
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.)
Pending
Application number
EP18151148.6A
Other languages
German (de)
English (en)
Inventor
Christian Budday
Meik PAULUS
Rainer Rauberger
Nadine SLOBODDA
Jürgen Schild
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vpf - Veredelungsgesellschaft Mbh fur Papiere und Folien & Co KG
West Label GmbH
Papier Mettler KG
Original Assignee
Vpf - Veredelungsgesellschaft Mbh fur Papiere und Folien & Co KG
West Label GmbH
Papier Mettler KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vpf - Veredelungsgesellschaft Mbh fur Papiere und Folien & Co KG, West Label GmbH, Papier Mettler KG filed Critical Vpf - Veredelungsgesellschaft Mbh fur Papiere und Folien & Co KG
Priority to EP18151148.6A priority Critical patent/EP3511259A1/fr
Publication of EP3511259A1 publication Critical patent/EP3511259A1/fr
Pending legal-status Critical Current

Links

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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/34—End- or aperture-closing arrangements or devices with special means for indicating unauthorised opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • B65D33/20—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps using pressure-sensitive adhesive

Definitions

  • the present invention relates to bags, in particular shipping bags, with at least one adhesive. Furthermore, the invention relates to the use of these bags for the shipment of food.
  • Mailing bags are widely used in the logistics industry. Such shipping bags are regularly made of plastic to adequately protect the shipping goods from external influences such as moisture. For example, bags of paper do not provide comparable moisture protection and are generally not used as shipping bags. Also can be made very reliable with plastic bags formed by using suitable pressure sensitive adhesive or by welding that once closed with a bag pouch bag can not be opened without destruction. For opening such shipping bags often perforation lines are attached adjacent to the tape in the opening area. The construction used for this purpose is generally not transferred to paper bags. In particular, in the case of paper bags, it is not guaranteed in the same reliable manner as in the case of plastic bag shipping bags that an unauthorized opening of a once sealed bag can be detected. Also, a good protection of the opening, especially against tearing, often not guaranteed. Although it is possible to seal bags and easy to tear (principle of the envelope), but can not create a defined and stable opening in this way. Both size and position of the opening is not fixed.
  • a bag in particular a shipping bag, having a substantially closed bottom end and an opposite opening end, comprising a bag front wall and a bag rear wall which, in the region of their opposite first and second side edges and bottom edges at least in sections, preferably completely, directly or indirectly, in particular via at least one wall, in particular at least one side wall for connecting the side edges and / or at least one bottom wall for connecting the bottom edges, and / or at least one fold, in particular at least one side fold for connecting the side edges and / or at least one bottom fold for connecting the bottom edges, the bag being equipped with an opening edge of the bag front wall and an opening edge of the bag back wall, in particular substantially rectified, preferably wherein a bag opening is bounded and / or defined by said two opening edges wherein the bag is further provided with at least a first fold and / or first line of weakness, in particular a perforation line, in the bag front wall and / or bag back wall extending at a first central distance from the opening edge of the B eute
  • first and / or second weakening line is at least for the most part or completely rectilinear, wave-shaped, needled or zigzag-shaped, in particular rectilinear and / or needled. This is particularly suitable for folding.
  • the weakening lines in particular the first and / or second weakening line, causes a weakening of the resistance to a folding movement, i. the folding requires less force. While it is generally conceivable to provide a line of weakness that weakens the material of the bag front wall or bag back wall so that a tearing for the purpose of engaging in the bag is possible. However, this is according to the invention a secondary aspect or not desirable. Rather, it is preferred if the weakening line is designed and set up to effect a folding movement and not for separating the front wall of the bag or the rear wall of the bag.
  • the force required to separate the bag front wall from the bag rear wall in the region of the adhesive is less than the force required to sever the bag of the line of weakness, especially if in a closed bag orthogonal to the bag front wall tensile forces on the first line of weakness act (so that in this case not the first line of weakness but the adhesive is destroyed).
  • the at least one first fold and / or first weakening line and the at least one second fold and / or second weakening line are very particularly preferably one in each case Perforation line, which simultaneously forms a folded edge. This is hereinafter referred to as folding perforation, so that the first fold and first weakening line is a first folding perforation and the second fold and second weakening line is a second folding perforation. Folding perforations can be folded surprisingly easily, so that the closing is particularly smooth.
  • the prey front wall and the bag rear wall each have the first fold and / or first line of weakness, preferably such that the first fold and / or first line of weakening of the prey wall is opposite the first fold and / or first line of weakening of the bag back wall, at least when the bag is spread flat (ie not filled).
  • the bag front wall and the bag rear wall each have the second fold and / or second line of weakness, preferably such that the second fold and / or second line of weakness of the front wall of the bag is opposite the second fold and / or second line of weakening of the bag rear wall, at least when the bag is spread flat (ie not filled). This facilitates folding in addition and is particularly cost-effective to manufacture, since the perforation can be produced simultaneously in the prey wall and bag rear wall.
  • the at least one adhesive and / or the first fold and / or second fold run substantially parallel to the opening-side edge of the bag front wall and / or the bag rear wall of the bag.
  • the at least one adhesive is arranged adjacent to the first fold and / or the first weakening line or the second fold and / or the second weakening line, preferably adjacent to the second fold and / or the second weakening line , It has been found that this ensures a particularly secure closure, whereby the stiffening of the bag is improved at the top.
  • the adhesive as described above, adjacent with a mean distance of less than 10 mm, in particular less than 5 mm, arranged.
  • the first folding portion has a bag back wall portion formed by the bag back wall and a bag front wall portion formed by the bag front wall
  • the second folding portion having a bag back wall portion formed by the bag back wall and a bag front wall portion formed by the bag front wall
  • the adhesive is designed so that it is connected by means of adhesive forces with bag front and / or bag rear wall and includes a gap film, designed and is arranged to split when separating the bag front and bag back wall in the gap foil in at least a first component of the split film on the bag front wall and at least a second component of the split film on the bag rear wall, in particular wherein the first of the second component, in particular substantially parallel to the bag front wall, irreversibly delaminated.
  • the constituents are opposing layers or layers of the cleavage foil.
  • the cleavage is preferably carried out in such a way that the first and second constituents-similar to a fingerprint-assume an individual and / or irregular shape when delaminated, so that an opened pouch can be identified on the basis of the shape of the components of the cleaved slit foil.
  • the at least one adhesive is at least one single-sided or double-sided adhesive tape, in particular exactly one-sided or double-sided adhesive tape. It may be multiple juxtaposed adhesive strips. However, it is preferably exactly one adhesive strip, wherein the bag does not comprise any further adhesive strips.
  • the at least one adhesive strip preferably extends between the opposing first and second side edges, in particular orthogonal thereto, preferably so that the ends of the adhesive strip have an average distance of at least 1 cm, in particular at least 3 cm, preferably at least 5 cm, from the side edges.
  • the at least one adhesive comprises at least one single-sided or double-sided adhesive strip with a first and second adhesive side and is fixed on the bag front wall, preferably wherein the adhesive strip at a third average distance from the opening edge of the bag front wall greater than the second mean distance from the opening edge of the bag front wall is present, and the bag back wall portion of the first folding portion after folding of the first folding portion on the second folding portion under pressure of the bag front wall portion of the first folding section to the bag front wall portion of the second folding section with an adhesive side, in particular the second adhesive side of the at least one adhesive, in particular irreversible, connectable or connected.
  • the at least one adhesive comprises at least one single-sided or double-sided adhesive strip with a first and second adhesive side and is fixed on the bag rear wall, preferably wherein the adhesive at a third average distance from the opening edge of the bag rear wall , which is greater than the second average distance, is present, and the bag front wall portion of the first folding section after folding the first folding section on the second folding section under pressure of the bag rear wall portion of the first folding section to the bag rear wall portion of the second folding section with an adhesive side, in particular the second adhesive side of the at least one adhesive, in particular irreversible, connectable or connected.
  • the at least one adhesive comprises at least one single-sided or double-sided adhesive strip having a first and second adhesive side and is fixed on the bag front wall in the first folding section, preferably wherein the adhesive at a fourth average distance from the Is present opening edge of the bag front wall, which is smaller than the first average distance from the opening edge of the bag front wall, and the bag rear wall, in particular a portion of the bag rear wall with a third average distance from the opening edge of the bag rear wall, after folding of the first folding section on the second folding section below Plant the bag back wall portion of the first folding portion of the bag rear wall portion of the second folding portion with an adhesive side, in particular the second adhesive side, the at least one adhesive, in particular irreversible, connectable or connected.
  • the at least one adhesive comprises at least one single-sided or double-sided adhesive strip with a first and second adhesive side and is fixed on the bag rear wall in the first folding section, preferably wherein the adhesive at a fourth average distance from the Is opening edge of the opening edge of the bag back wall, which is smaller than the first average distance from the opening edge of the bag front wall, and the bag front wall, in particular a portion of the bag front wall with a third average distance from an opening edge of the bag front wall, after folding the first folding portion on the second Faltab bain under installation of the bag front wall portion of the first folding portion to the bag front wall portion of the second folding portion with an adhesive side, in particular the second adhesive side, the at least one adhesive, in particular irreversible, connectable or connected.
  • the third distance is greater than the second distance and / or the fourth distance is less than the first distance from the opening edge of the bag front wall and / back wall.
  • the first and second fold portions have substantially coincident dimensions. This has the advantage that the closure holds better.
  • Substantially equal proportions means that the deviation of the surfaces is less than 25%, in particular less than 15%, preferably less than 10%, particularly preferably less than 5%, and / or wherein the larger surface is not more than 25%, in particular not more than 15%, preferably not more than 10%, particularly preferably not more than 5%, is larger than the smaller area.
  • first and second folds and / or the first and the second weakening lines are substantially parallel to one another, wherein preferably the respectively substantially rectified first and second folds and / or the first and second weakening lines have an average spacing from each other in the range of 5 mm to 5 cm, in particular in the range of 1 cm to 3 cm.
  • the invention further relates to a bag, in particular as described above, having a substantially closed bottom end and an opposite opening end, comprising a bag front wall and a bag rear wall which, in the region of their opposing first and second side edges and bottom edges, at least partially directly or indirectly, in particular via at least one wall and / or at least one fold, wherein the bag further comprises an opening edge of the bag front wall and an opening edge of the bag rear wall, in particular substantially rectified, preferably wherein a bag opening bounded by said two opening edges and / or is defined, and comprising at least one adhesive with at least one cleavage film, in particular an adhesive comprising a single-sided or double-sided adhesive strip in the form of a cleavage film, wherein there s adhesive is attached directly or indirectly to the bag front wall and / or the bag back wall with a first adhesive side and is partially or completely, in particular sections, of the first to the second side edge, or at least in sections, between the first and second side edges of the bag front wall or bag back wall,
  • An irreversible cleavage in the sense of the invention means that the adhesive can not be detached without destruction or reversibly split, but is destroyed during the cleavage, in particular can no longer take over the original adhesive function for connecting bag front and back bag.
  • the adhesive no longer has a significant adhesive effect after opening.
  • the bag can therefore preferably not be closed again with the adhesive.
  • the strength of the adhesive forces of the adhesive after an irreversible cleavage is reduced by at least 80%, in particular at least 90%, preferably at least 95%, compared to a not yet used Adhesive. The adhesive force is tested according to the European Standard EN 1939: 2003.
  • An average distance to a side edge in the sense of the present invention is preferably an average distance that is determined in particular substantially parallel to the opening edge of the bag front wall and / or parallel to a longitudinal extent of the adhesive and / or orthogonal to the first side edge of the bag front wall.
  • a mean distance to an opening edge in the sense of the present invention is preferably an average distance, which is determined in particular orthogonal to the opening edge of the bag front wall and / or orthogonal to a longitudinal extent of the adhesive and / or parallel to the first side edge of the bag front wall.
  • a gap film in the sense of the invention is a layer that can be split, in particular substantially parallel to the surface area, i. the film is separated into opposing layers.
  • One way to ensure the cleavage is the co-extrusion of several layers of film, so that the layers of the film can later be separated again. It may be, for example, coextruded polyethylene films.
  • a foamed film, for example made of polystyrene, or a foam film, for example made of polyurethane, is also conceivable. Many foams are characterized by a low strength, which can be used for the cleavage. Nonwovens are also conceivable and are also characterized by a low strength.
  • the slit film wholly or at least partially, in particular predominantly and / or in at least one layer of the slit film, an average density of less than 0.85 g / cm 3 , in particular less than 0.8 g / cm 3 , preferably less than 0.75 g / cm 3 , particularly preferably less than 0.65 g / cm 3 , on.
  • Slit films have proved to be advantageous which are completely or at least partially, in particular predominantly, average densities of 0.1 to 0.8 g / cm 3 , in particular 0.25 to 0.75 g / cm 3 , preferably 0.35 to 0 , 7 g / cm 3 , very particularly preferably 0.45 to 0.65 g / cm 3 , have.
  • a slit foil having a density which only partially corresponds to the above density can be produced by coextruding a core having one of the above densities, for example a density of 0.55 g / cm 3 , with higher density films.
  • the region of the core has said density, for example of 0.55 g / cm 3 , in the cleavage film, while the coextruded films can surround the core and in particular a, preferably significantly, higher density, for example of 0.95 g / cm 3 , in particular an average density of the coextruded films of more than 0.85 g / cm 3 .
  • This can facilitate the processing of the film, and it has surprisingly been found that a low density of the core can ensure very good splittability, even if other film layers have a higher density.
  • the cleavage film predominantly, ie, in an area which is more than 50% of the volume of the cleavage film, has one of the abovementioned maximum densities or density ranges.
  • the cleavage film additionally or alternatively in at least one layer of the cleavage film on one of the aforementioned maximum densities or density ranges. It has been shown that these areas, in particular layers, can then be separated especially well longitudinally.
  • the entire gap foil as a whole may have an average density which corresponds to one of the abovementioned maximum densities or density ranges.
  • the split film comprises cavities, in particular cavities, which are smaller than the thickness of the split film, and / or an average diameter of less than 200 .mu.m, in particular less than 110 .mu.m, more preferably less than 80 .mu.m, very particularly preferably less than 50 .mu.m , to have.
  • some or all of the cavities are substantially ovoid-shaped, in particular spherical and / or with a convex surface (concave from inside).
  • a volume of the cavities of less than 5 ⁇ 10 6 ⁇ m 3 , in particular less than 5 ⁇ 10 5 ⁇ m 3 , particularly preferably less than 5 ⁇ 10 4 ⁇ m 3 . It has been shown that with said cavities, a weakening of the gap foil can be achieved, which significantly improves the cleavage.
  • a split film is also a cavitated thermoplastic extruded plastic film.
  • air or another gas is preferably introduced during the extrusion, in particular coextrusion, which leads to the generation of the cavitations of the cavitated thermoplastic extruded plastic film.
  • the entry of air or gas takes place either directly, by the supply gas or air during coextrusion or by use of a propellant which releases gas or air during or after coextrusion, in particular wherein the cleavage film comprises a propellant for this purpose.
  • Such films are particularly easy to split, and this also applies to mono-extruded films.
  • Coextruded multilayer gap foils which will be discussed in more detail below, have proven to be particularly suitable.
  • the split film is formed completely or predominantly from a plurality of juxtaposed plastic layers, in particular from multilayer plastic layers formed by coextrusion. It has been found that coextruded multilayer gap films, in particular comprising polyethylene, are particularly suitable for targeted irreversible delamination, in particular with the formation of an individual delamination characteristic. Therefore, these are often avoided in shipping bags to prevent accidental opening. Surprisingly, it has been shown that the splitting of the films during opening and a secure closure with the gap film described above can be achieved well.
  • the contiguous plastic layers of the split film can also be obtained by bonding.
  • the juxtaposed plastic layers are connected by means of an adhesive which, when attempting to open, is specifically separated, in particular delaminated, in particular with formation of an individual delamination characteristic.
  • the gap foil may be a plastic foil.
  • it is a thin layer with a thickness of less than 0.3 cm, in particular less than 0.2 cm, preferably less than 0.1 cm.
  • Particularly suitable embodiments of the split film have thicknesses of 30 to 500 .mu.m, in particular 60 to 200 .mu.m, particularly preferably 80 to 150 .mu.m.
  • Particularly suitable materials for slit films are basically polyethylene, polypropylene, polystyrene, polyethylene terephthalate, polyvinyl chloride, various polyesters and polycarbonate, or mixtures or multilayer composites of several of the aforementioned plastics.
  • the adhesive preferably also has a thickness, which is composed of the cleavage foil and the possibly present other layers, in particular possibly also the first and second adhesion layer.
  • the thickness is preferably in the range of 80 to 800 .mu.m, in particular 100 to 300 .mu.m, particularly preferably 120 to 180 microns.
  • the thickness of the adhesive and / or the gap foil is in each case smaller than the thickness of the bag front wall, in particular wherein the thickness of the Bag front wall in each case by at least 50%, in particular at least 100% greater than the thickness of the adhesive and / or the cleavage film.
  • the bag back wall This reduces the risk that the bag front wall or bag back wall instead of the strip when separating the bag front wall from the bag rear wall in the region of the adhesive breaks.
  • the weight per unit area of the split film is preferably in the range from 20 to 200 g / m 2 , in particular from 30 to 120 g / m 2 , particularly preferably from 40 to 80 g / m 2 . It has been shown that corresponding films are particularly suitable for delamination.
  • the bag according to the invention comprises at least one first fold and / or first line of weakness, in particular perforation, in the bag front wall and / or bag back wall extending at a first central distance from the opening edge of the bag front wall and / or the opening edge of the bag back wall from the first side edge or spaced from the first side edge to the second side edge or toward the second side edge, a portion of the bag front wall and a portion of the bag back wall from the opening edge of the bag front wall and / or bag back wall, to the first fold and / or first line of weakness of the bag front wall and / or Bag rear wall form a first folding section.
  • first fold and / or first line of weakness in particular perforation
  • At least one second fold and / or second weakening line, in particular perforation, in the front wall of the bag and / or the rear wall of the bag which extends at a second average distance from the opening edge of the bag front wall and / or the opening edge of the bag rear wall of the bag the second margin from the opening edge of the bag front wall and / or bag back wall is greater than the first average distance from the opening edge of the bag front wall and / or bag back wall wherein a portion of the bag front wall and an area of the bag back wall from the first fold and / or the first line of weakness of the bag front wall and / or bag back wall to the second fold and / or second line of weakness of the bag front wall and / or bag back wall, a second Fa training section.
  • the second average distance is at least twice as large as the first average distance, in particular at least twice to a maximum of three times, preferably a maximum of 2.5 times, as large as the first average distance.
  • the first component is or comprises a first plastic layer of the split film and the second component is a second plastic layer of the split film which is arranged at least partially opposite, preferably before the irreversible separation of the bag front wall from the bag rear wall in the region of the split film are flat, juxtaposed, plastic layers, in particular wherein the plastic layers are different sizes, in particular have different sized surfaces.
  • the at least one adhesive is an adhesive strip comprising the cleavage film which is connected by adhesive forces with bag front and bag rear wall, wherein the traction tire, in particular its material stability, is designed and arranged so that when, in particular complete Separating the bag front wall from the bag rear wall in the region of the adhesive strip, at least the first component of the adhesive strip remains on the bag front wall, and at least the second component remains on the bag rear wall.
  • the adhesive strip can be multi-layered from the beginning or the first and second components only form when they are separated.
  • the at least one adhesive is an adhesive strip, in particular an adhesive strip comprising the cleavage foil adhesively bonded to the front and back pouches, wherein the adhesion forces are greater than the forces needed to separate the adhesive strip when separating the pouch front wall from the pouch back wall tear in the area of the adhesive strip and / or to separate the plastic layers of the adhesive strip. Tearing may mean a separation of plastic layers, in particular parallel to the adhesive surface, and / or a tearing orthogonal to the adhesive surface, ie the split strip is divided orthogonally to the adhesive surface. In a preferred embodiment, both are provided, since it has surprisingly been found that in this case it is particularly difficult to hide an unauthorized opening.
  • the geometry of the adhesive strip remnants is then often unpredictable, so that a bag can be identified or recognized on the basis of the adhesive strip remainders. This makes it difficult to exchange an opened by the authorized user bag by an unauthorized opened bag.
  • the bags are preferably unique due to an individual delamination characteristic, in particular the split film.
  • the at least one adhesive comprises a first adhesion layer which comprises or forms the first adhesion side, a second adhesion layer which comprises or forms a second, in particular opposite, adhesion side of the adhesive, and at least one intermediate layer arranged between the first and second adhesion layers the at least one intermediate layer is or comprises the split film.
  • the at least one intermediate layer represents the gap film and is a carrier for the first and second adhesion layer.
  • the intermediate layer may comprise at least one adhesion promoter layer in addition to the split film.
  • the adhesion promoter layer may in particular be a mineral coating, preferably a kaolin coating.
  • both sides of the cleavage foil are coated in such a way that the bond to the cling layer is strengthened. This promotes a cleavage of the cleavage foil, since a solution of the adhesion forces between the cleavage foil and the sticky layer is prevented more effectively.
  • the adhesive preferably comprises a pressure-sensitive adhesive, in particular a permanently and / or irreversibly adhesive pressure-sensitive adhesive.
  • the first and / or second adhesion layer comprises said pressure-sensitive adhesive.
  • the cleavage foil is preferably coated on at least one side, in particular on both sides, with an adhesive, in particular pressure-sensitive adhesive.
  • Suitable adhesives are acrylate adhesives, natural or synthetic rubber based adhesives, silicone based adhesives and polyolefin adhesives. Particular preference is given to adhesives which are suitable for use in the food sector. Adhesives based on natural or synthetic rubber have proven to be particularly good adhesion, resulting in an above-average reliable cleavage of the cleavage film. Also, the acrylate adhesive is particularly suitable, in particular for a very good cleavage with an above-average processability, so that a particularly cost-effective production is possible.
  • the adhesive application weight ie the mass of adhesive per unit area, is preferably 8 to 100 g / m 2 , in particular 12 to 60 g / m 2 , preferably 16 to 30 g / m 2 , particularly preferably 18 to 25 g / m 2 . It has been found that if amounts of adhesive beyond the abovementioned ranges, in particular beyond the aforementioned preferred ranges, are selected, the cleavage and / or the processability, in particular punching with a punching knife during production, is less reliable.
  • a layer in the sense of the invention can be, for example, a plastic layer or an adhesion or adhesive layer. Even if plastics and adhesives do not preclude each other, a layer consisting only of adhesive in the sense of the invention does not mean any plastic layer, but an adhesion or adhesive layer.
  • a plastic layer is a layer which comprises plastic, preferably a plastic film, in particular the split film.
  • an adhesive which has juxtaposed segments, with some segments better adhering to the bag front wall and other segments better on the bag back wall.
  • plastic layers are separated when separating the bag front and bag back wall in the area of the adhesive, but adjacent segments. This corresponds to a division orthogonal to the adhesive surface, wherein at the same time a substantially parallel cleavage is conceivable.
  • a combination of both creates a suitable individual delamination characteristic.
  • the at least one adhesive and / or the first fold and / or second fold run substantially parallel to the opening-side edge of the bag front wall and / or the bag rear wall of the bag.
  • the at least one adhesive extends in sections between the first and second side edge and ends at a middle side distance from the first and second side edge, in particular in each case a mean side distance of at least 10% of the total distance between the first and second Page margin corresponds.
  • the split film has at least one weakening zone, in particular substantially parallel to the bag front wall, in particular wherein the first and second components are separably connected by the weakening zone.
  • Said weakening zone may be a contact zone between coextrusion-bonded layers of the cleavage foil. Weakening zones made of or containing foam or nonwoven fabric are conceivable and suitable.
  • the at least one adhesive is spaced from the first and the second side edge, in particular with an average distance of at least 15% of the mean distance between the first and second edge, preferably at least 30% of the mean distance between the first and second edge.
  • the adhesive in particular the adhesive strip, not must extend over the entire length to ensure a secure closure.
  • edge regions of the bag remain without adhesive, in particular adhesive strips, so that the risk of unfolding in these areas basically exists.
  • unfolding can be prevented by folding not just one but several times, as already described.
  • the upper edge of the bag is stiffened such that opening without destroying the adhesive, in particular the adhesive strip, is no longer possible.
  • a one-sided adhesive or double-sided adhesive can be used as an adhesive.
  • a one-sided adhesive in particular a one-sided adhesive tape, which is welded, for example, with the bag.
  • the adhesive may be constructed in two parts, wherein preferably the gap foil is arranged opposite to an adhesion layer of the adhesive.
  • the adhesive is described in the closed state of the bag, in which the two parts cooperate, so that the adhesive is constructed in one piece. Said adhesive thus has a two-part and a one-part state, before or after the closure of the bag. When reopening the bag, the adhesive is destroyed, since the adhesion is then no longer sufficiently available to re-adhesive seal the bag.
  • a block bottom bag and / or gusseted bag in particular a paper block bottom bag and / or paper gusseted bag, has been found.
  • a bag which is a block bottom bag and a gusseted bag is particularly preferred.
  • the risk of food damage is significantly lower, since the block bottom creates a cavity that exerts little or no pressure on the contents of the bag.
  • the water absorption of the paper material in particular paper, determined according to Cobb according to GOST 12605 (03/2001) in the range of 15 to 45 g / m 2 , preferably in the range of 20 to 35 g / m 2 . It's hard to stop food from giving off moisture. It has surprisingly been found that it is advantageous if the paper absorbs moisture and that much so that a food-friendly climate is generated in the bag and at the same time a wetting of the bag can be prevented. The latter is necessary to prevent the bag from breaking easily.
  • the bag front wall and the bag back wall and optionally the side walls and / or the bottom of the bag at least substantially on paper material, in particular paper, with a grammage in the range of 60 to 100 g / m 2 , determined according to DIN EN ISO 536: 2012-11, are based or at least partially include or manufactured. Paper with these properties has proven to be particularly resilient. Also, the weakening lines are stabilized particularly well here, so that an accidental separation is prevented, while at the same time a folding is particularly well possible, especially in perforation lines.
  • the longitudinal extent of the bag rear wall measured from the bottom end to the opening edge, substantially coincides with the longitudinal extent of the bag front wall, measured from the bottom end to the opening end.
  • the bag comprises first and / or second side wall elements between the first and second side edges of the bag front and the bag rear wall, in particular wherein the side wall elements represent gussets, which preferably extend from the bottom end of the bag front and bag rear wall.
  • transverse extent of the bag rear wall and the bag front wall measured from the first to the second side edge of the bag, is smaller than the longitudinal extent of the bag front wall and / or the bag rear wall, measured from the bottom end to the opening end.
  • a shipping bag having a substantially closed bottom end and an opposite opening end, comprising a bag front wall and a bag rear wall, which are at least partially directly or indirectly, connected to each other in the region of their opposing first and second side edges and bottom edges wherein the bag has an opening edge of the bag front wall and an opening edge of the bag rear wall, in particular, extend substantially rectified, wherein the
  • the bag is further provided with at least a first fold and line of weakness in the form of a perforation line in the bag front wall and in the bag back wall extending at a first central distance from the opening edge of the bag front wall and the concurrent opening edge of the bag back wall from or spaced from the first side edge Side edge extends to the second side edge or in the direction of the second side edge, wherein a portion of the bag front wall and a portion of the bag back wall from the opening edge of the bag front wall and bag back wall to the first fold and first line of weakness of the bag front wall and bag back wall forming a first folding portion, the bag
  • the bag front wall, the bag back wall, the bottom fold, the side walls and / or the side folds of the bag in particular bag front wall and bag rear wall and optionally the bottom fold, the side folds and / or the side walls, completely or in sections, in particular substantially completely or at least predominantly, based on a paper material, in particular paper. It has been shown that the food is kept for a particularly long time and, moreover, that an environmentally sound disposal of the bag is possible, in particular as waste paper.
  • the bag is substantially and / or predominantly integrally formed, in particular, apart from the adhesive, based on a substantially and / or predominantly one-piece paper material web. This lowers the manufacturing costs and is particularly environmentally friendly. This is not insignificant, especially in the case of shipping bags, which are regularly produced in large quantities.
  • the at least one adhesive on the second adhesive side has at least one releasable protective film.
  • the protective film may also be a release or protective paper.
  • it is preferably a plastic film, in particular a plastic film, which protects the first and / or second adhesion layer until the bag is closed. This protective film is optionally peeled off before closing the bag, in particular so that the first and / or the second adhesion layer is exposed.
  • the bag is a disposable shipping bag for food.
  • a disposable shipping bag according to the invention is suitable both for the design, the manufacturing costs and / or the properties in terms of disposal, for sending by an online mail order company of food and the subsequent, in particular environmentally friendly, disposal of the shipping bag, especially in paper waste.
  • the opening edge of the bag front wall and the opening edge of the bag rear wall may preferably be arranged substantially parallel to each other. It is preferable that the average distance between the opening edge of the bag front wall and the bottom edge of the bag front wall is equal to or not more than 10%, especially not more than 5%, deviates from the average distance between the opening edge of the bag back wall and the bottom edge of the bag Bag rear wall, in particular wherein the opening edges in the generic closed with the adhesive bag to each other come to rest or less than 1 cm, in particular less than 0.5 cm, preferably less than 0.2 cm, are spaced from each other.
  • the opening edges preferably extend at least when the average distance is less than 5 cm and the orientation does not deviate more than 10 ° from a parallel orientation, in particular when the mean distance is less than 1 cm and / or the orientation is not more than 2 ° apart.
  • Two elements or surfaces run essentially parallel if the respective orientations do not deviate from a parallel alignment by more than 10 °, in particular not more than 5 °, preferably not more than 1 °.
  • the invention further relates to the use of the bag for transport, in particular shipping, of food. It is preferably a shipping bag for food.
  • the invention further relates to the use of a bag for food shipment with at least one adhesive which is designed and adapted to close the bag by means of adhesion forces, wherein the traction tire is designed and arranged so that when, in particular complete separation of bag front and bag rear wall at least a first constituent of the adhesive strip on the front wall of the bag and at least one second constituent remain on the bag rear wall in the region of a split film, wherein the first of the second component, in particular substantially parallel to the bag front wall, is irreversibly delaminated, in particular with the formation of an individual delamination characteristic.
  • the present invention is based on the finding that a secure closure with the mechanism as described above is possible. It has also been found that by choosing a suitable adhesive, unauthorized opening can not go unnoticed. This is particularly important in the food sector because it is important for shoppers that the food has not been handled by third parties. Here hygienic considerations play a role, but also the fear of poisoning by said third parties. Against this background, it is of particular importance for foodstuffs that it can be completely proven that packaging or, in this case, bags, in particular shipping bags, are not manipulated, opened or the contents changed. In addition, the choice of materials and construction of the bag allows a particularly secure and at the same time easy-to-open closure.
  • FIG. 1 shows a bag 1, in particular shipping bag, with a substantially closed bottom end 15 and an opposite opening end 17, comprising a bag front wall 5 with opposite first and second side edges 7, 8 and a bottom edge 9. Also, the bottom edge 9 'of the back of the block bottom bag is visible ,
  • the bag front wall 5 has an opening edge 16 which is substantially rectilinear with the opening edge of the bag rear wall (not shown).
  • a first fold and / or first weakening line 2, which in the present case is a perforation, in the bag front wall 5 has a first mean distance from the opening edge 16 of the bag front wall 5 and extends from the first side edge 7 to the second side edge 8, the area of the Bag front wall 5 from the opening edge 16 of the bag front wall 5 to the first fold and / or first weakening line 2 of the bag front wall 5 form a first folding portion 21, wherein the bag is further equipped with at least a second fold and / or second weakening line 3, which in the present case is a perforation, in the bag front wall 5 which extends at a second average distance from the opening edge 16 of the bag front wall 5 from the first side edge 7 to the second side edge 8, the second one mean distance from the opening edge of the bag front wall 5 is greater than the first mean distance from the opening edge 16 of bag front wall 5, wherein the area of the bag front wall 5 from the first fold and / or the first line of weakness 2 of bag front wall 5 to the second fold and / or second weak
  • FIG. 2 shows the opposite side of the bag FIG. 1 , ie the bag rear wall 4.
  • FIG. 2 thus shows the bag 1, in particular shipping bag, with a substantially closed bottom end 15 and an opposite opening end 17, comprising a bag rear wall 4, with opposite first and second side edges 7 ', 8' and the bottom edge 9 'of the bag rear wall 4.
  • the opening edge 16 'of the bag back wall 4 is spaced at a first mean distance from a first fold and / or first line of weakness 2' in the form of a perforation in the bag back wall 4 which is at a first mean distance from the opening edge of the bag back wall 16 'from the first side edge 7 'extends to the second side edge 8', wherein the area of the bag rear wall 4 from the opening edge 16 'of the bag rear wall to the first fold and / or first line of weakness 2' of the bag rear wall 4 forms a first folding portion 21, wherein the bag is further equipped with at least one second fold and / or second weakening line 3 'in the form of a P in the bag rear wall 4, which extends at a second average distance from the opening edge 16 'of the bag rear wall, 4 from the first side edge 7' to the second side edge 8 ', wherein the second average distance from the opening edge 16' of the bag rear wall 4 larger is the first mean distance from the opening edge 16 'of the bag back wall 4, the
  • FIG. 3 shows a section of the bag front wall FIG. 1
  • the first end line 2 in the bag front wall 5 extends at a first central distance A1 from the opening edge 16 of the bag front wall 5.
  • a second line of weakness 3 extends in a second middle line Distance A2 from the opening edge 16 of the bag front wall 5.
  • the adhesive 11 extends at a third average distance A3 from the opening edge 16 of the bag front wall 5.
  • the mean distance A1 is the smallest and A3 is the largest indicated mean distance within the figure of Fig. 3 , When the bag front wall 5 is folded in the sense of the invention, the adhesive 11 comes to rest on the bag rear wall and is fixed thereto.
  • FIG. 4 shows a section of the bag front wall of an alternative embodiment according to the invention, again the upper end of the bag front wall with the first and second folding section 21, 23.
  • a first line of weakness 2 in the bag front wall 5 extends at a first average distance A1 from the opening edge 16 of the bag front wall 5.
  • a second line of weakness 3 extends at a second intermediate distance A2 from the opening edge 16 of the bag front wall 5.
  • the adhesive 11 is disposed in the first folding section 21 and therefore has a very small fourth mean distance A4 from the opening edge 16 of the bag front wall 5.
  • the adhesive 11 comes to the bag rear wall to the plant and is fixed thereto.
  • FIGS. 5 to 10 will be discussed in the embodiments of the adhesive in the context of the present invention. For reasons of clarity, only the cut-out in the area of the adhesive will be discussed.
  • Each of the following embodiments is suitable for combination with the above bags, and then the adhesive is to be constructed accordingly.
  • FIG. 5 relates to a first embodiment, wherein the at least one adhesive, in particular in the form of an adhesive strip, a first adhesion layer 131 on the bag front wall 105 as an adhesive layer, an intermediate layer, in particular split film, as a gap foil 132 and a second adhesion layer 130 on the bag rear wall 104 has an adhesive layer.
  • FIG. 5 shows the bag in the closed state, ie, the adhesive connects by adhesive forces bag front and bag rear wall 105, 104.
  • the at least one split film 132 is designed and set up when separating the bag front and bag back wall to split. For this purpose, in the present embodiment, it is a multilayer coextruded plastic film.
  • FIG. 6 shows again the first embodiment of FIG. 5 , wherein the bag has now been opened by the adhesive was separated and now decays into two components.
  • the split film 132 was irreversibly split into at least one first component 135 of the split film 132 on the bag front wall 105 and at least one second component 134 of the split film 132 on the bag rear wall 104, wherein the first of the second component, in particular parallel to the bag front wall, is irreversibly delaminated.
  • Said components 134, 135 prevent re-adhesion, since they have no significant adhesion effect.
  • the first component 135 is attached to the first adhesion layer 131 and the second component 134 is attached to the second adhesion layer 130.
  • FIG. 7 relates to a second embodiment, wherein the at least one adhesive has a first adhesion layer 231 as an adhesive layer, an intermediate layer as a split film 232 and a second adhesion layer 230 as an adhesive layer.
  • FIG. 7 shows the bag in the closed state, ie, the adhesive connects by adhesive forces bag front and bag back wall 205, 204.
  • the at least one split film 232 is designed and arranged to split when separating the bag front and bag back wall 205, 204. For this purpose, in the present embodiment, it is a low-strength foam film.
  • FIG. 8 shows again the second embodiment of FIG. 7 , wherein the bag has now been opened by the adhesive was separated and now decays into two components.
  • the split film 232 was irreversibly split into at least a first component 235 of the split film 232 on the bag front wall 205 and at least a second component 234 of the split film 232 on the bag rear wall 204, wherein the first of the second component parallel to the bag front wall 205 irreversibly by splitting the foam with low strength is split.
  • Said components 234, 235 prevent re-adhesion, since they have no significant adhesion effect.
  • the first component 235 is attached to the first adhesion layer 231 on the bag front wall 205 and the second component 234 is attached to the second adhesion layer 230 on the bag back wall 204.
  • FIG. 9 shows a first initial position of the opened bag, before it is closed, whereby by this variant, the first embodiment of the FIG. 5 is produced.
  • the bag is in FIG. 9 now open and has not been closed by the adhesive.
  • a protective film 140 is applied, which prevents the second adhesion layer (130) Adphases except to the opposite bag rear wall 104 is formed.
  • the structure of the split film 132 and the adhesion action of the first adhesion layer (131) to the bag front wall 105 are already in connection with FIG. 5 been described.
  • adhesion forces act, so that the bag, as shown in FIG FIG. 5 shown is closed.
  • FIG. 10 shows a second starting position of the opened bag, before it is closed, which variant by this, the first embodiment of the FIG. 5 is produced.
  • the bag is in FIG. 10 now open and has not been closed by the adhesive.
  • the adhesive is constructed in two parts, wherein the second adhesion layer 152 is adhesively attached to the bag rear wall 104 and a protective film 151 is applied, which prevents the second adhesion layer 152 from forming adhesion forces to the opposite split film 132.
  • the split film is adhesively attached to the bag front wall 105 by means of the first adhesion layer 131.
  • FIG. 11 shows a third starting position of the opened bag, before it is closed, whereby by this variant, the first embodiment of the FIG. 5 is produced.
  • the bag is in FIG. 11 now open and has not been closed by the adhesive.
  • the adhesive is constructed in two parts, wherein a second adhesion layer 152 is adhesively attached to the bag back wall 104 and a second protective film 151 is applied, which prevents the second adhesion layer 152 forming adhesion forces to the opposite further second adhesion layer 130, wherein the further second adhesion layer 130 at the Slit film 132 is attached and a first protective film 140 is applied, which prevents the further second adhesion layer 130 adhesion forces to the opposite second adhesion layer 152 is formed.
  • the split film is adhesively attached to the bag front wall 105 by means of the first adhesion layer 131. If both protective films 151, 140 are removed and the bag back wall 104 and the bag front wall 105 approach in the area of the adhesive, adhesion forces act, so that the bag, as in FIG. 5 shown is closed.
  • two second adhesion layers 130, 152 in contact which causes a particularly secure connection. It may be provided to implement a two-component adhesive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
EP18151148.6A 2018-01-11 2018-01-11 Pochette, en particulier pochette d'expédition pourvue d'au moins un adhésif Pending EP3511259A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18151148.6A EP3511259A1 (fr) 2018-01-11 2018-01-11 Pochette, en particulier pochette d'expédition pourvue d'au moins un adhésif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18151148.6A EP3511259A1 (fr) 2018-01-11 2018-01-11 Pochette, en particulier pochette d'expédition pourvue d'au moins un adhésif

Publications (1)

Publication Number Publication Date
EP3511259A1 true EP3511259A1 (fr) 2019-07-17

Family

ID=60957157

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18151148.6A Pending EP3511259A1 (fr) 2018-01-11 2018-01-11 Pochette, en particulier pochette d'expédition pourvue d'au moins un adhésif

Country Status (1)

Country Link
EP (1) EP3511259A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2070564A (en) * 1980-02-21 1981-09-09 Supracolor Finanz Ag Paper bag
US4937040A (en) * 1988-03-07 1990-06-26 Minnesota Mining And Manufacturing Company Security deposit bag
EP1296306A2 (fr) * 2001-09-19 2003-03-26 Tesa AG Utilisation d'une bande adhesive de securité pour révéler l'ouverture non-authorisée d'un emballage postal
WO2008022308A2 (fr) * 2006-08-18 2008-02-21 Coating Excellence International Llc Emballage apte à être scellé plusieurs fois avec une structure inviolable et procédé de fabrication de celui-ci

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2070564A (en) * 1980-02-21 1981-09-09 Supracolor Finanz Ag Paper bag
US4937040A (en) * 1988-03-07 1990-06-26 Minnesota Mining And Manufacturing Company Security deposit bag
EP1296306A2 (fr) * 2001-09-19 2003-03-26 Tesa AG Utilisation d'une bande adhesive de securité pour révéler l'ouverture non-authorisée d'un emballage postal
WO2008022308A2 (fr) * 2006-08-18 2008-02-21 Coating Excellence International Llc Emballage apte à être scellé plusieurs fois avec une structure inviolable et procédé de fabrication de celui-ci

Similar Documents

Publication Publication Date Title
EP1799583B1 (fr) Emballage non refermable pour produits dangereux
EP3081374B1 (fr) Composite en tissu et matière plastique, sachet d'emballage en composite en tissu et matière plastique et procédé de fabrication d'un sac d'emballage
EP2236275B1 (fr) Procédé de fabrication pour une feuille d'emballage flexible dotée d'une fermeture refermable
DE60219688T2 (de) Verpackung, wie zum beispiel beutel, mit ausgerichteter aufreissöffnung
EP2138664A1 (fr) Bande d'étanchéité précomprimée
EP2363286B1 (fr) Feuille d'emballage, emballage et procédé de fabrication pour cet emballage
EP2374604B1 (fr) Couvercle à feuille destiné à la fermeture d'un récipient et son procédé de fabrication
DE102007035501A1 (de) Verschlusseinrichtung zur Verwendung an einem Verpackungsbehälter
WO2012055925A2 (fr) Emballage et stratifié pour fabriquer l'emballage
EP3052395B1 (fr) Sac et procédé de fabrication de sac
EP1714894B1 (fr) Ruban à sceller, emballage en feuille associé et procédés pour leur fabrication
EP3299312B1 (fr) Composite en tissu et matière plastique, sachet d'emballage en composite en tissu et matière plastique et procédé de fabrication d'un composite en tissu et matière plastique
EP3511259A1 (fr) Pochette, en particulier pochette d'expédition pourvue d'au moins un adhésif
DE102009043360A1 (de) Aufreißverpackung
EP3757036B1 (fr) Sachet formé d'un film
DE102007036903A1 (de) Verschlusssystem für einen flexiblen Verpackungsbehälter
EP3024625B1 (fr) Procede et dispositif pour la production de sacs en tissu
DE3839143A1 (de) Beutel fuer bonbons u. dgl.
EP2857322A1 (fr) Sac et procédé de fabrication de sac
EP2858816B1 (fr) Stratifié de films d'emballage intégrant un ruban adhésif
DE202008015097U1 (de) Aufreißhilfe für PE-Torfsäcke
WO2011047403A2 (fr) Emballage refermable
DE102021113521A1 (de) Verpackungsbeutel sowie Verfahren zur Herstellung eines Verpackungsbeutels
EP3792192B1 (fr) Agencement de sacs d'emballage ainsi que procédé de fabrication et de manipulation de l'agencement de sacs d'emballage
WO2012103560A1 (fr) Sac

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200116

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20200504

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230331