EP4095059A1 - Sac d'emballage, ainsi que procédé de fabrication d'un sac d'emballage - Google Patents

Sac d'emballage, ainsi que procédé de fabrication d'un sac d'emballage Download PDF

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Publication number
EP4095059A1
EP4095059A1 EP22174092.1A EP22174092A EP4095059A1 EP 4095059 A1 EP4095059 A1 EP 4095059A1 EP 22174092 A EP22174092 A EP 22174092A EP 4095059 A1 EP4095059 A1 EP 4095059A1
Authority
EP
European Patent Office
Prior art keywords
carrier section
front walls
packaging bag
bag body
web
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
EP22174092.1A
Other languages
German (de)
English (en)
Inventor
Jens Kösters
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.)
Mondi AG
Original Assignee
Mondi AG
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 Mondi AG filed Critical Mondi AG
Publication of EP4095059A1 publication Critical patent/EP4095059A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/008—Stiffening or reinforcing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B31B70/10—Feeding or positioning webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B70/16—Cutting webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/262—Folding sheets, blanks or webs involving longitudinally folding, i.e. along a line parallel to the direction of movement
    • B31B70/266—Folding sheets, blanks or webs involving longitudinally folding, i.e. along a line parallel to the direction of movement involving gusset-forming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • B31B70/644—Making seals parallel to the direction of movement, i.e. longitudinal sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • B31B70/645—Making seals transversally to the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/813—Applying closures
    • B31B70/8131—Making bags having interengaging closure elements
    • B31B70/8133—Applying the closure elements in the cross direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/04—Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
    • 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
    • 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
    • B65D75/525—External rigid or semi-rigid supports
    • 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
    • B65D75/545—Cards, coupons or other inserts or accessories the inserts or accessories being located within a pouch or envelope attached to the exterior of the packages, e.g. shipping mailers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5805—Opening or contents-removing devices added or incorporated during package manufacture for tearing a side strip parallel and next to the edge, e.g. by means of a line of weakness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5866—Integral spouts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/001—Flexible containers made from webs by folding webs longitudinally
    • B31B2155/0012—Flexible containers made from webs by folding webs longitudinally having their openings facing in the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/002—Flexible containers made from webs by joining superimposed webs, e.g. with separate bottom webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2170/00—Construction of flexible containers
    • B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined
    • 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
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • B65D2565/385—Details of packaging materials of special type or form especially suited for or with means facilitating recycling

Definitions

  • the present invention relates to a packaging bag with a bag body made of a foil material and with at least one additional carrier section provided with a print, which is arranged on the outside of the bag body, wherein the bag body has at least two opposite front walls, which consist of an upper edge, a bottom margin and side margins.
  • Such packaging bags are basically known from the prior art.
  • the foil material used for the bag body is usually suitable for mechanically protecting the packaged goods.
  • it can also have barrier properties that prevent the penetration of oxygen or water vapor, the escape of aroma and the escape of fat from the packaged goods.
  • the outside of the bag body is usually provided with printing that is visible from the outside, as a result of which the visual appearance of the bag body can be designed in an appealing manner.
  • a printed image can, of course, also contain information about the packaged goods, so that effective protection of the printed image is also provided with a view to ensuring that it can be read for as long as possible.
  • packaging bags made of a composite film z. B. are formed from a laminate of polyethylene terephthalate (PET) and polyethylene (PE), in which case the print layer is arranged between the two film layers and the two film layers are connected to one another via a laminating adhesive. By enclosing the print layer between two layers, the printed image is protected in the long term and is also visible from the outside if the outer film layer is transparent.
  • PET polyethylene terephthalate
  • PE polyethylene
  • packaging bags In the packaging industry, however, there is an increasing need for packaging bags to be able to be recycled as much as possible or, in particular, completely. It is of essential importance that the individual components of the packaging materials can be separated according to material classes to the greatest possible extent in order to ensure a high degree of recyclability.
  • the packaging is made from as few different materials or plastics as possible.
  • Single-material solutions are therefore also known from the prior art, in which case a film laminate made of an oriented polyethylene and a further layer made of polyethylene is then provided. The printed image is then again arranged between these two film layers.
  • Bag bodies made from such a film material have advantages over film laminates made from polyethylene terephthalate and polyethylene in terms of recyclability.
  • the print layer between the individual layers also has a negative effect on recyclability.
  • the bag foils are usually first shredded during the recycling process, with the individual material components of the granulate then being recorded using near-infrared detection and then sorted.
  • the granules colored by a printed layer are particularly noticeable from a sensory point of view, which makes sorting into pure material classes significantly more difficult.
  • the colored granules cannot easily be used for other purposes, also for optical reasons.
  • the bag body itself can be essentially unprinted and then to provide printing on an additional carrier section, which is then attached to the front walls.
  • an additional carrier section is provided, which is connected to one of the front walls in particular via heat-sealed seams.
  • the bag body and the additional film section are then shredded together. This is followed by sorting according to individual plastic classes, e.g. B. using an air classification method or a buoyancy method. For material separation, it is then provided that materials are used which have different densities or that the foil section has a different thickness than the material for the bag body.
  • the present invention is based on the object of specifying a packaging bag with a reduced plastic content, which can be recycled in a particularly simple manner and has a lower plastic content than previous solutions.
  • the at least one carrier section is made of a paper-based material and is detachably fastened to one of the front walls.
  • the invention thus teaches a packaging bag in which the optical appearance is decisively influenced by the paper-based carrier sections.
  • the carrier section can be provided with an imprint in a simple manner, while the bag body is designed essentially without any imprint.
  • a substantially unprinted bag body means that the proportion of printing is not more than 5% of the surface of the bag body.
  • the bag body it is also within the scope of the invention for the bag body to be completely unprinted.
  • the carrier section can be removed from the bag body so that both components can be disposed of or recycled separately from one another.
  • both components can be disposed of or recycled separately from one another.
  • the carrier section is made entirely of paper.
  • the paper is kraft paper.
  • Kraft paper is packaging paper made from bleached or unbleached sulphate pulp and has high static and dynamic strength. For this reason, such kraft paper is widely used for packaging materials.
  • kraft paper is particularly suitable for printing.
  • the carrier section can therefore be printed particularly easily on an outside and then attached with an inside to one of the front walls.
  • the proportion of plastic is immediately reduced to a large extent, so that only the protection of the packaged goods is ensured via the bag body made of film material.
  • the at least one carrier section has a sealing coating at least in some areas on a side facing the front wall of the bag body and is connected to the front wall by a heat-sealed seam in the area of the sealing coating.
  • the sealing layer is intended to form the heat-sealed seam between the carrier section and the front wall.
  • This sealing layer can be a coating made of polyethylene (PE), for example.
  • this sealing layer is not understood as part of the carrier section, so that accordingly even when using a sealing layer, the carrier section itself is still made entirely of paper can be formed.
  • the sealing layer itself is suitable for forming a cohesive heat-sealed seam between the bag body and the front wall under the action of heat.
  • the carrier section In the course of removing the carrier section, the carrier section is usually torn locally on the surface in the region of the heat-sealed seam, so that the separation takes place within the carrier section.
  • the sealing layer is arranged on the bag body and can be recycled together with the bag body, in particular in the case of a single-type design.
  • a residual part of paper fibers can also remain on the bag body.
  • this residual component is of secondary importance for the recycling process.
  • the area of the sealing layer should be as small as possible and in particular should only be provided where a heat-sealed seam is subsequently required.
  • the sealing layer is preferably applied in strip form to the carrier section before a sealing seam is formed.
  • the sealing layer can be arranged on two parallel edges of the carrier section.
  • the support section and the front wall can also be connected by means of an adhesive layer, which is also designed to be detachable and is arranged in regions on the support section.
  • the adhesive layer is then preferably arranged in a manner analogous to that of the sealing coating.
  • a printed carrier section is arranged on only one of the front walls.
  • each carrier section it is also possible for each carrier section to be formed from a paper-based material and to be detachably fastened to one of the front walls.
  • a carrier section extends on both front walls.
  • the at least one carrier section or also both carrier sections extends over at least 50%, preferably 60% and particularly preferably over at least 70% of the area of the corresponding front wall.
  • the carrier sections are not only used to hold a printed image. Rather, the entire bag can be given a significantly higher degree of stability.
  • the thickness of the bag film is preferably between 30 and 120 ⁇ m, preferably between 40 and 80 ⁇ m.
  • the basis weight of the carrier section is preferably between 40 and 100 g/m 2 .
  • the foil material of the bag body is formed from a polyolefin, in particular from polyethylene or polypropylene.
  • the foil material can comprise several layers, in which case a one-material solution is preferably provided in which all layers are formed from polyethylene or from polypropylene.
  • the production of several layers is preferably carried out in the coextrusion process, since in such a case no laminating adhesive has to be used between the individual layers, so that against this background, a better recyclability of the bag body results.
  • the bag body itself can be designed in various ways.
  • the packaging bag is preferably designed as a gusseted bag.
  • the front walls then connect to one another via two side folds, so that the front walls merge into one another via the side folds correspondingly at the side edges.
  • the gussets each have two gusset sections which are separated from one another by a folded edge.
  • the gusseted bag can then be laid flat in an unfilled state in a simple manner, while in an erected state a high packaging volume on the one hand and a good stand on the other hand are possible.
  • the at least one carrier section or the carrier sections extend to the side edges of the respective front wall.
  • edge seams in the form of heat-sealed seams are provided on the side edges, which connect sections of the gussets to sections of the front walls.
  • edge seams can connect the front walls to the side gussets.
  • an embodiment in the form of so-called blind seams is also possible, in which case only one folded edge is provided behind the blind seam, via which the front walls merge into the side folds.
  • the edge seams between the front walls and the side folds are preferably designed in such a way that they peel open under the action of a load. This is for the tightness of the packaging bag is unproblematic, since the front walls are not connected to the side folds via the edge seam and the fold arranged behind the edge seam thus continues to ensure tightness.
  • configurations without edge seams are also conceivable, in which case the gussets are then connected to the front walls only via a folded edge.
  • the at least one carrier section preferably extends over at least 60%, preferably at least 80%, of the width of the front wall. Alternatively, it is provided that the carrier section extends over the entire width of the front wall and in particular into the area of the edge seams.
  • the sealing layer of the carrier section is then preferably arranged only in the area of the edge seams.
  • the at least one support section also preferably extends over at least 60%, preferably at least 80%, of the length of the front wall. In this regard, too, it is provided that the carrier section extends over the entire length of the front wall. However, an embodiment is particularly preferred in which a top and/or a bottom area of the at least one front wall is not covered by a support section.
  • the bag body can be recycled to a proportion of at least 90%, particularly preferably at least 95%, so that overall a very large proportion of the materials can be reused.
  • the bag body can be completely recycled.
  • the bag body has a stand-up base that can be formed by folding over and gluing the front walls.
  • a so-called pinch floor can also be provided be.
  • one of the front walls is designed to be shorter than the other front wall, with the protruding front wall section then being arranged in regions on the shorter front wall and connected to it.
  • the packaged goods can act almost exclusively via shear forces on the connecting seam between the front walls. Due to the comparatively thin film material, such forces can be absorbed much better by the connecting seam than peeling forces, which act as tensile forces on the closing seam.
  • the subject matter of the invention is also a method for producing a packaging bag according to the invention, with fundamentally various alternative production methods being possible within the scope of the invention.
  • a material web made of a film material with two web sections arranged next to one another and forming the front walls is first fed in a production direction, with a material tube being formed by folding the material web in such a way that the web sections forming the front walls face each other and with individual bag bodies from the material tube be separated.
  • at least one carrier section is fed in the direction of production and arranged on a web section forming a front wall and fastened in a detachable manner.
  • This carrier section can be arranged and fastened on the material web before or after it is folded into a material tube.
  • the arrangement and fastening takes place before the individual bag bodies are separated.
  • the support portion may be formed as a continuous web so that it is severed together with the bag body. in such a case, the support portion extends the full height of the finished bag body.
  • side folds can also be formed between the front walls, for which purpose corresponding web sections for the side folds are provided on the material web.
  • the gussets themselves are then formed by repeatedly folding the web of material.
  • the tube of material can be closed by a closure seam running in the production direction, which is preferably designed as a heat-sealed seam, with this closure seam preferably being provided on one of the front walls.
  • blind seams can be provided.
  • sections of the front walls are connected to sections of the side gussets via an edge seam in the form of a heat-sealed seam, with these edge seams also correspondingly running in the production direction.
  • the closure seam is preferably arranged outside the blind seams on one of the front walls. This ensures that only shearing forces and no peeling forces act on the closure seam. The blind seams are therefore not trimmed afterwards, so that no predetermined breaking point can form for the bag body.
  • a carrier section is provided on both front walls, these are preferably fed in at the same time in the production direction and arranged next to one another on the web sections. If a tube of material is first formed, the carrier sections must also be fed in the direction of production, but then arranged and fastened above and below the tube of material. Furthermore, it is conceivable that the carrier sections are supplied in the form of a continuous web and then separated together with the bag body. The consequence of this is that the support sections extend over the entire length into the top and bottom areas of the front walls.
  • the flat webs of film material forming the front walls are fed in the production direction and connected either directly to one another or with the inclusion of side folds running in the transverse direction to form a material tube, with individual bag bodies being separated from the material tube.
  • at least one carrier section is fed in the direction of production and is arranged on one of the flat webs forming the front walls and fastened in a detachable manner.
  • the at least one carrier section can first be arranged and fastened on the flat web or the carrier sections can each be arranged and fastened on one of the flat webs before or after forming into a material hose.
  • the carrier portion is preferably provided and attached in the form of a continuous web. Accordingly, here too, individual sections are separated together with the separation of the bag bodies, with the carrier sections then extending over the entire width of the bag bodies.
  • the flat webs are connected to one another or to the side folds, preferably via connecting seams running in the transverse direction.
  • the connecting seams are designed in particular as heat-sealed seams.
  • the at least one carrier section is also attached to one of the front walls via a heat-sealed seam.
  • the carrier section has a rear coating made of a sealing material, which can then form a material connection with the material for the bag body.
  • the 1 shows a packaging bag with a bag body 1 made of a film material, which has two front walls 2, 3, which are connected to each other via side folds 4.
  • a carrier section 5 is also arranged on both front walls 2, 3 and is fastened by means of heat-sealed seams 6.
  • the carrier sections 5 have a sealing coating on a side facing the front walls 2, 3, this sealing coating being provided only in areas where a heat-sealed seam 6 will later have to be formed.
  • the bag body 1 is also formed from a heat-sealable foil material.
  • a bag body 1 made of polyethylene, the film material having a thickness between 30 and 120 ⁇ m.
  • the bag body 1 also has edge seams 7 which extend along the lateral edges of the bag body 1 and are also in the form of heat-sealed seams.
  • the carrier sections 5 here extend up to the side edges of the bag body 1, so that the edge seams 7 overlap with the heat-sealed seams 6 accordingly.
  • the carrier sections 5 also have an imprint 8, while the bag body 1 is unprinted.
  • the visual appearance is thus decisively determined by the carrier sections 5, which extend over the entire width of the front wall and over a very large area of the height, so that these carrier sections 5 not only determine the visual appearance but also significantly improve the stability of the entire packaging bag becomes.
  • the heat-sealed seams 6 are designed to be detachable and can be broken open after the packaged goods have been completely removed, so that the carrier section 5 can be detached from the bag body 1 in a simple manner.
  • a holding section 9 is provided on which Support section 5 protrudes and can be easily reached from behind by a user.
  • An upper section of the bag body 1 is also free of a support section 5 and has a closure 10 for removal.
  • a standing base 11 is provided at a lower end of the bag body, which is formed by folding the front walls 2, 3 over.
  • the 2 shows a manufacturing method for manufacturing a packaging bag according to FIG 1 .
  • a material web 12 made of a film material with two web sections 13, 14 arranged next to one another and forming the front walls 2, 3 is fed in a production direction P.
  • the application of carrier sections 5 to the web sections 13, 14 takes place.
  • the web of material 12 also has web sections 15 from which gussets 4 are formed in the course of folding.
  • the 3 shows an alternative procedure for the manufacturing process according to FIG 2 ,
  • the carrier sections 5 being arranged and fastened only after a material tube 16 has been formed on the front walls 2, 3 or on the web sections 13, 14 forming the front walls 2, 3.
  • the 4 shows an alternative manufacturing method, in which a tube of material 16 is not produced by folding over, but rather by attaching flat webs 17, 18 to one another.
  • a method is usually also referred to as a transverse method, since the flat webs 17, 18 are guided in the production direction P.
  • the individual bag bodies 1 or the sections to be formed for the individual bag bodies 1 are arranged in the transverse direction Q.
  • the support portions 5 formed of paper are arranged in the form of a continuous sheet on the flat sheets 17,18, which flat sheets 17,18 are intended to form the front walls 2,3.
  • Both carrier sections 5 have printing 8 , the dotted hatching on the flat web 17 making it clear that the printed image is not visible from this perspective, since it is arranged on a rear side of the flat web 17 .
  • the flat webs 17, 18 are superimposed with the inclusion of gussets 4 and connected to one another by heat sealing.
  • the bottom area 20 is folded over and placed between the flat webs 17, 18.
  • Individual bag bodies can then be separated from the material hose 16 .
  • it can also make sense to provide an adhesive connection instead of heat sealing, in which case an adhesive seam can then be formed analogously to a heat-sealed seam.
  • a head area 19 and a bottom area 20 are always provided, via which the separated bag body 1 can be closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
EP22174092.1A 2021-05-26 2022-05-18 Sac d'emballage, ainsi que procédé de fabrication d'un sac d'emballage Pending EP4095059A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021113521.4A DE102021113521A1 (de) 2021-05-26 2021-05-26 Verpackungsbeutel sowie Verfahren zur Herstellung eines Verpackungsbeutels

Publications (1)

Publication Number Publication Date
EP4095059A1 true EP4095059A1 (fr) 2022-11-30

Family

ID=81748806

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22174092.1A Pending EP4095059A1 (fr) 2021-05-26 2022-05-18 Sac d'emballage, ainsi que procédé de fabrication d'un sac d'emballage

Country Status (2)

Country Link
EP (1) EP4095059A1 (fr)
DE (1) DE102021113521A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060133701A1 (en) * 2004-12-20 2006-06-22 Daniels Mark E Side seam bag with registered, perforated, promotional strips
US20060285775A1 (en) * 2003-09-26 2006-12-21 Takashi Fukuizumi Long packaging material for manufacturing pouch
DE202012002078U1 (de) * 2012-03-01 2012-05-10 Franz Tress GmbH & Co. KG Verpackung
US20150125097A1 (en) * 2012-05-10 2015-05-07 Hosokawa Yoko Co., Ltd. Gusset bag with spout
US20150199786A1 (en) * 2012-11-20 2015-07-16 Mpt, Inc. Advertising media for application to packaging materials
EP3168169A1 (fr) 2015-11-13 2017-05-17 Mondi Consumer Packaging Technologies GmbH Sachet plastique
DE102020108929A1 (de) * 2020-03-31 2020-05-14 Mondi Ag Folienbeutelanordnung sowie Verfahren zur Bildung einer Folienbeutelanordnung
EP3594144B1 (fr) * 2018-07-13 2021-02-17 Mondi AG Sachet recyclable

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL3663080T3 (pl) 2018-12-06 2022-02-07 B&B Verpackungstechnik GmbH Sposób i urządzenie do wytwarzania worków foliowych

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060285775A1 (en) * 2003-09-26 2006-12-21 Takashi Fukuizumi Long packaging material for manufacturing pouch
US20060133701A1 (en) * 2004-12-20 2006-06-22 Daniels Mark E Side seam bag with registered, perforated, promotional strips
DE202012002078U1 (de) * 2012-03-01 2012-05-10 Franz Tress GmbH & Co. KG Verpackung
US20150125097A1 (en) * 2012-05-10 2015-05-07 Hosokawa Yoko Co., Ltd. Gusset bag with spout
US20150199786A1 (en) * 2012-11-20 2015-07-16 Mpt, Inc. Advertising media for application to packaging materials
EP3168169A1 (fr) 2015-11-13 2017-05-17 Mondi Consumer Packaging Technologies GmbH Sachet plastique
EP3594144B1 (fr) * 2018-07-13 2021-02-17 Mondi AG Sachet recyclable
DE102020108929A1 (de) * 2020-03-31 2020-05-14 Mondi Ag Folienbeutelanordnung sowie Verfahren zur Bildung einer Folienbeutelanordnung

Also Published As

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