EP3023356B1 - Verfahren zur herstellung eines seitenfaltenbeutels - Google Patents

Verfahren zur herstellung eines seitenfaltenbeutels Download PDF

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Publication number
EP3023356B1
EP3023356B1 EP15191286.2A EP15191286A EP3023356B1 EP 3023356 B1 EP3023356 B1 EP 3023356B1 EP 15191286 A EP15191286 A EP 15191286A EP 3023356 B1 EP3023356 B1 EP 3023356B1
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EP
European Patent Office
Prior art keywords
bag
front wall
gusseted
film
gussets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15191286.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3023356A1 (de
Inventor
Alfons Kruse
Detlef Stöppelmann
Jens Kösters
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Mondi AG
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Mondi AG
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Filing date
Publication date
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • 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
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • 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
    • B31B2155/00—Flexible containers made from 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
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/001—Flexible containers made from webs by folding webs longitudinally
    • 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
    • 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
    • B65D2575/00—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
    • B65D2575/52—Details
    • B65D2575/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D2575/586—Opening or contents-removing devices added or incorporated during package manufacture with means for reclosing

Definitions

  • the invention relates to a method for producing a gusseted bag. wherein a web of material is fed to a bag film in a direction of production, wherein by folding the bag film, a gusseted tube is formed having a first front wall, a second front wall and gussets connecting therebetween, and individual gusseted bags are severed from the gusseted tube.
  • the gusseted bag is usually formed from plastic film, wherein in particular multilayer laminated films are suitable for the production, in which case the films on an inside of the gusseted bag have a heat-sealable inner layer and an outer surface of the side gusseted bag outer layer, wherein in a laminated film and an internal Overprint may be provided, which is produced before laminating.
  • One of the two gussets is provided with the reclosing means for fixing and closing the gusset in a folded state between the front walls, whereby the gusset can be folded outwardly by opening the reclosing means to form a chute.
  • a transversely extending top seal seam is provided above the reclosing device in the case of a filled side gusset bag, which first has to be partially demolished, cut or peeled open for first opening with a corresponding head section.
  • EP 1 620 321 B1 Generic gusseted bags are made EP 1 620 321 B1 . EP 1 948 527 B1 . EP 2 032 454 B1 . EP 1 873 081 A1 . US 2012/195532 A1 and EP 2 148 820 B1 known.
  • gusseted bags have a reclosure with a single self-locking reclosure strip on the inside of the bag at a gusset and adjacent the gusset also extends to the two front walls and which connects the gusset with the two front walls. Starting from a center line of the gusset one wing, so one half of the corresponding gusset with the first front wall and the other half of the gusset is connected to the second front wall.
  • the length of the reclosure strip on the two front walls can be different according to the prior art as well as in the context of the invention.
  • the reclosing strip on the front walls can also extend beyond the corresponding gusset, so that then adjacent to the gusset, the two front walls are directly connected to each other, whereby a larger discharge opening is provided.
  • the reclosure extends only over part of the entire width of the front walls.
  • a connection line extending in the longitudinal direction of the bag or in the transverse direction of the bag, in particular a heat-sealing seam, can be provided laterally to the reclosing strip in order to delimit the opening.
  • gusseted bags For the production of gusseted bags, various methods are known in practice.
  • the generic gusseted bag with a reclosing device on only one gusset and the associated sections the front walls are formed by folding from a single sheet of film.
  • the self-locking reclosable strip is placed on the flat material web, in which case one of the gussets is formed in the region of the reclosure strip. From a gusseted tube with the front walls and the side gusses individual gusseted bags or corresponding blanks are then separated, each having a reclosing device.
  • gusseted pouches are then separated from the gusseted tubing, wherein a filling can take place directly in this case, which is then a so-called FFS process (Form Fill and Seal).
  • FFS process Form Fill and Seal
  • prefabricated gusseted bags can first be formed which are not yet closed on at least one side and can then initially be stored and transported to a packaging location. Such gusseted bags are then filled separately and sealed.
  • a bag string of successive, connected bag blanks is formed.
  • a first film web is guided in the production direction.
  • a film strip is fed, wherein the edges of the film strip are folded over on a central portion.
  • the edges are usually the same width, with a gap remaining between the edges after folding.
  • pieces of film strips are applied at a uniform distance transversely to the production direction (ie along the bag longitudinal direction) on the first film web before a second film web is fed in the production direction, with which the first film web and the pieces of film strips are covered.
  • a lower edge of the gusseted bag can be closed with a transverse seal, but then a uniform placement of the gusseted bag is not possible. Rather, such a gusseted bag tends during filling, its transport and its storage to a tilt when it is to be placed on its lower portion as a floor.
  • Gusset bags with a flat bottom formed by a separate film section are made US Pat. No. 6,334,710 B1 .
  • EP 2 039 619 A1 The two front walls and gussets can be folded and sealed from a common film section, in which case the separate film section for the flat bottom is subsequently arranged.
  • a method of manufacturing a side gusset bag wherein a web of a bag film is fed in a direction of production, wherein a gusset tube is formed by folding the bag film with a first front wall, a second front wall and gussets connecting therebetween and wherein from the gusseted tube individual gusseted bags are separated.
  • a weakening is introduced.
  • the weakening is torn open by suitable measures in a separate method step, in which case the separated first front wall is raised and at least partially folded over, whereby the underlying second front wall and the side gusset are exposed in sections.
  • a separate film portion is connected via connecting seams with the folded-over portion of the first front wall, the exposed side folds and the second front wall.
  • the invention is based on the object of specifying an easy-to-carry out method for producing such a gusseted bag.
  • the invention relates to a method for producing a gusseted bag according to claim 1.
  • the invention accordingly relates to a method for producing a gusseted bag, wherein a material web of a bag film is fed in a direction of production, wherein by folding the bag film a Gusseted with a first front wall, a second front wall and arranged therebetween, the front walls connecting gussets is formed, and being separated from the gusseted tube single, preferably unfilled gusseted bag.
  • a transversely extending incision is made such that the incision extends at the gusseted tube over both gussets and the first front wall, which between the Side folds is arranged, wherein in the gusseted tube separated by the incision first front wall on one side of the incision, ie seen in the production direction before or behind the incision, raised and at least partially folded, whereby the underlying second front wall and the side fold sections are exposed and wherein, to form a flat bottom, a separate film section is connected via connecting seams, in particular heat sealing seams, to the folded-over section of the first front wall and the uncovered side folds and the second front wall.
  • the gusseted bag formed in the method according to the invention is characterized by a particularly advantageous handling.
  • an optionally provided reclosing device on the first gusset it can be fixed in a folded state after a first opening, in which case the two wings of the first gusset are each fastened to one of the two front walls.
  • the gusset can be folded outwards to form a chute, so that then a particularly easy and accurate dosage is possible.
  • the gusseted bag can be emptied controlled by an inclination by a user, with just a precise removal of subsets is possible, in which case the remaining contents is protected by the reclosing device.
  • the gusseted bag may for example have a filling volume between 1 l and 50 l, in particular between 2 l and 30 l.
  • the gusseted bag is particularly suitable for receiving bulk materials such as pelleted pet food, detergent, cat litter, road salt and powdery or granular construction materials.
  • a top seal seam is usually provided above the reclosing device prior to initial opening, which seals the side gusset bag tightly.
  • a top seal is then torn off to expose the underlying recloser and allow the chute to fold out and reclosure.
  • the reclosing device comprises at least one reclosing strip, which preferably runs exactly in the transverse direction of the bag.
  • the reclosing device has several separate reclosing strips has, which are lockable with each other.
  • the reclosing device has a single, continuous and self-locking reclosable strip.
  • Such a reclosing strip can be particularly easily placed on a flat web of material during manufacture, in which case only folding of these reclosing strip in the desired position on the gusset is arranged.
  • the reclosing strip may have either continuous closure formations or a plurality of individual interlockable closure elements.
  • the reclosing strip may have either continuous closure formations or a plurality of individual interlockable closure elements.
  • the reclosing strip may have either continuous closure formations or a plurality of individual interlockable closure elements.
  • grooves, protrusions and hook-shaped curved strips which can be locked together or with themselves can be considered as continuous closure molding.
  • Corresponding structures can be extruded, for example, as a strand, wherein the closure formations are usually arranged on a heat-sealable support section or extruded in one piece with the heat-sealable support section.
  • Individual, lockable closure elements can be provided for example in the form of Velcro hooks, mushroom heads or the like.
  • the individual mushroom heads or Velcro hooks are usually so mobile that they at a pressure from the outside in an associated space can penetrate and then lock there with similar closure elements.
  • the entire reclosure strip can not be easily pulled up from the dirt.
  • the front walls and the side folds are formed from a bag film, in particular a uniform bag film, wherein the front walls and the side folds can be folded from a uniform material web as described above.
  • the bag film usually has at least one heat-sealable inner layer and one outer layer, wherein the assignment of the inner layer and the outer layer relates to the arrangement of the bag film on the side-folding bag.
  • the inner layer thus forms the inner surface of the gusseted bag, while the outer layer forms the outer surface.
  • the inner layer is expediently well heat-sealable in order to close the pouch on the circumference, to be able to form longitudinal and transverse sealing seams and also to be able to fasten further devices such as the reclosing device by heat sealing.
  • polyolefins such as polyethylene (PE) and polypropylene (PP) and polyolefin copolymers
  • biodegradable plastics such as polylactic acid (PLA), polybutylene adipate terephthalate (PBAT) and polybutylene succinate (PBS) are also suitable as the heat-sealable material for the inner layer.
  • the outer layer is less heat sealable compared to the inner layer, for which the outer layer may have a higher melting or softening temperature. In a heat-sealing of the bag film is then achieved that, although the inner layer - possibly through the outer layer - is melted without, however, the outer layer is excessively deformed or loses its structure.
  • the outer layer may in particular be formed from polyester. A reduction in the tendency to melt in a heat seal can also be achieved by an orientation of the outer layer. For the outer layer therefore also oriented polyethylene terephthalate (OPET), oriented polyamide (OPA), oriented polypropylene (OPP) and oriented polylactic acid (OPLA) into consideration.
  • the outer layer may also be formed by a cellulose film.
  • a laminating film is used as the bag film, wherein a first film with the inner layer and at least one second film with the outer layer are bonded together by adhesive.
  • a first film with the inner layer and at least one second film with the outer layer are bonded together by adhesive.
  • Suitable for example, is a two-component adhesive based on polyurethane (2K-PUR).
  • 2K-PUR polyurethane
  • other intermediate layers may be provided, for example to increase the barrier effect.
  • a barrier for example, a film layer of ethylene vinyl alcohol copolymer (EVOH), a thin metal foil or a metallized film layer may be provided.
  • an internal printing is preferably also provided, which is applied to one of the joining surfaces of the films to be joined together before laminating.
  • the gusseted bag is expediently produced in a longitudinal method, wherein a material web of the bag film is first converted into a gusseted tube, from which individual side gusset bags are then separated.
  • the side edges formed between the side folds and front walls are formed as folded edges.
  • a longitudinal seal is expediently carried out. This can coincide with one of the side edges, so that then this side edge is not formed as a folding edge.
  • the edges of the material web can also be connected to one of the front surfaces by a longitudinal seam.
  • the production of longitudinal sealing seams at the side edges may be expedient to increase the dimensional stability and dimensional stability of the gusseted bag.
  • an outer edge may also be cut to improve the appearance.
  • An upper edge of the bag above the reclosing device is usually closed by a transverse sealing seam.
  • the side folds extend over the entire side gusseted bag from the flat bottom to the transverse seam at the upper edge of the bag, that is to say in the longitudinal direction of the bag. Further measures to shorten the gusset are then not necessary.
  • the gusseted bag can be provided with a carrying handle.
  • the carrying handle can be like from the EP 2 032 454 B1 be stamped on the bag head in a sealed area.
  • the second gusset on a carrying handle which then faces the reclosing device.
  • Suitable embodiments of carrying handles are made EP 2 148 820 B1 known.
  • the carrying handle with respect to the bag longitudinal direction can be arranged offset approximately in the middle or slightly offset in the direction of the flat bottom of the gusseted bag, whereby then the weight of the gusseted bag can be easily controlled even when dumping.
  • the flat bottom provided according to the invention by a separate film section usually has a heat-sealable inner layer and an outer layer, as described above, wherein the flat bottom can also be formed from the previously described bag film.
  • the flat bottom usually has a rectangular shape, wherein the length and width of the film section corresponds to the width of the front walls and the width of the side folds.
  • a modification is provided in which incisions are produced which cut through a first front wall formed from the material web and the side folds adjoining it in the transverse direction for each film bag.
  • the incisions may conveniently be formed in the still flat web of material, but then in the folding then tearing must be prevented and the web is to be guided with appropriate care.
  • reclosure strips are arranged, which after forming the gusseted tube at one of the gussets and each over a part extend the two front walls, which is then formed in the context of the method according to the invention, the gusseted bag described above with a reclosure at the first gusset.
  • the reclosure strip expediently extends at the front walls at least over a width which corresponds to half the width of the associated gusset. In such an embodiment, only a connection of the two wings of the gusset with one of the front walls takes place. If the reclosure is carried out beyond the gusset area, the two front walls can also be connected directly to each other in certain areas.
  • the reclosure strip extends in all cases only over part of the front walls.
  • the method can also be used to attach carrying handles which are expediently arranged on the side fold which lies opposite the reclosable strip.
  • a heat-sealing seam may be provided, wherein such a heat-sealing seam is preferably formed in the region of one of the side edges.
  • all side edges can be provided with a heat-sealing seam in order to improve the stability of the side gusset bags that are formed. If the material web is welded at one side edge to a circumferentially closed tube, supernatants can also be provided there, which are trimmed, that is cut off.
  • the first front wall is preferably folded over at a fold line spaced from the incision in such a way that the distance of the fold line from the incision corresponds approximately to half the width of the side fold.
  • the front wall is then folded as far as possible, whereby the exposed gusset, starting from a central crease line at an oblique angle of 45 ° to the outside.
  • the separate sheet section for forming a flat bottom for each gusseted bag is conveniently attached to the front panels and gussets with heat seal sutures.
  • the sealing at the gussets can be done easily on the flattened gusseted tube.
  • the corresponding generation of a transverse sealing seam preferably in the raised state.
  • the Fig. 1 shows a gusseted bag with two opposite front walls 1a, 1b, a first gusset 2a and a second gusset 2b, wherein the gussets 2a, 2b extend opposite each other along a bag longitudinal direction l and each connect the two front walls 1a, 1b with each other.
  • FIG. 1 shows a filled and sealed in a transverse direction of the bag q by a head seal 3
  • Fig. 2 a gusseted bag provided as a pre-made bag in a laid-flat condition for subsequent filling.
  • the prefabricated, flattened bag is filled at the top initially not yet closed edge and closed by the head seal 3.
  • the side edges between the front walls 1a, 1b and the side folds 2a, 2b are reinforced by longitudinal sealing seams 4.
  • the bag has a reclosing device with a reclosing strip 6.
  • the reclosing strip 6 is arranged in the region of the first side fold 2a and extends over the two wings of the first side fold 2a inserted between the front walls 1a, 1b and along the front walls 1a, 1b.
  • the reclosure strip 6 extends on the front walls 1a, 1b beyond the first gusset 2a, so that there in a region adjacent to the first gusset 2a region, the two front walls 1a, 1b can be directly connected.
  • the two wings of the corresponding side fold 2a are connected to one of the two front walls 1a and 1b, respectively.
  • a weakening line 7 is arranged above the reclosure strip 6, with which a corner section 8 above the reclosure strip 6 can be separated.
  • the weakening line 7 can be formed for example by a punching, a perforation or a laser, wherein the various measures can also be combined.
  • a notch 9 is provided for crack initiation.
  • a transverse seam 10 is formed adjacent to the reclosure strip 6, which extends from the end of the reclosure strip 6 to the opposite edge of the bag.
  • the first gusset 2a can be folded outward by opening the reclosing device formed by the reclosing strip 6, forming a chute, and reinserting between the two front walls 1a, 1b for a new closure.
  • the gusseted bag has a flat bottom which is formed by a separate film section 11.
  • the film portion 11 is connected to the lower edges of the front walls 1a, 1b and the side folds 2a, 2b by heat sealing seams 12a, 12b. While the flat bottom during filling, transport, storage and handling is particularly advantageous and allows a safe setting up the gusseted bag, the contents can be easily removed with the reclosing device, in particular, the removal of subsets by the formation of a chute exactly possible is.
  • a carrying handle not shown, which is suitably arranged on the second side fold 2b, which is opposite to the reclosing device.
  • the reclosing strip 6 may comprise continuous closure formations in the form of grooves or projections or also a multiplicity of individual closure elements which can be locked together, wherein such individual closure elements which can be locked together may for example have the form of mushroom heads or hooked hooks.
  • a material web is fed to a bag film 13 in a production direction p, which corresponds in its orientation to the bag longitudinal direction l.
  • the corresponding method is therefore also referred to as a longitudinal method.
  • a gusseted tube 14 is formed, which has a first front wall 1a, a second front wall 1b and two side folds 2a, 2b connecting the front walls 1a, 1b. According to the Fig. 3a the crease lines are already indicated.
  • Outer edges 15 of the bag film 13 are provided as a projection and are separated after the formation of the gusseted tube 14.
  • a transverse incision 16 is made such that the incision 16 in the subsequently formed gusseted tube 14 extends over the two gussets 2a, 2b and the first front wall 1a which extends between the gussets 2a, 2b is arranged.
  • the individual gusset bags are separated from the gusseted tube 14 in the region of the incisions 16, wherein the incision 16 is provided for the formation of a flat bottom.
  • the bag film 13 is at least two-layered and comprises a heat-sealable inner layer of polyolefin, in particular polyethylene and an outer layer of polyester, in particular PET.
  • the film section 11 may be formed of a same or similar material with a corresponding layer structure.
  • the heat-sealable inner layer is according to Fig. 3a in the flat supplied bag film 13 initially free, so that there can also be sealed for each gusseted bag a transverse reclosing strip 6. Adjacent to the reclosing strip 6, the weakening line 7 is also already produced in the flat bag film 13, with which the upper corner section 8 for exposing the reclosable strip 6 during a first opening can subsequently be separated in the finished gusseted bag.
  • the first front wall 1a can be raised, for which purpose, for example, grippers or vacuum cups can be used.
  • Fig. 3a is further indicated also that in the formation of the gusseted tube 14 also longitudinal sealing seams 4 can be generated.
  • the overhead first front wall 1a is partially folded over, the two side folds 2a, 2b and the second front wall 1b are partially exposed underneath (see FIG Fig. 3b ), whereby then there the side folds 2a, 2b, starting from a bend line 17 at an angle of 45 ° to the outside.
  • a separate film section 11 is placed, which according to the Fig. 3b in particular can be supplied laterally.
  • this separate film section 11 is connected to the unfolded gussets with heat sealing seams 12b, wherein this heat sealing can be done with a flat gusseted hose 14.
  • FIG Fig. 3d In order to avoid the undesired production of a heat-sealing seam within the side gusset tube 14 when connecting the separate film section 11 to the first front wall 1a, it is possible according to FIG Fig. 3d intended be that the turned-over portion of the first front wall 1a is erected and then connected in the erected state along a heat-sealing seam 12a with the separate film section 11 ( Fig. 3e ).
  • connection of the separate film section 11 with the second front wall 1b can be done without problems beforehand or else subsequently.
  • Both heat-sealed seams 12a can also be formed together when the separate film section 11 is folded back in again ( Fig. 3d ), because then the connections of the separate film section 11 to the first front wall 1a and the second front wall 1b at the lower edge of the bag are superimposed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)
EP15191286.2A 2014-11-18 2015-10-23 Verfahren zur herstellung eines seitenfaltenbeutels Active EP3023356B1 (de)

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EP3246266B1 (de) * 2016-05-17 2019-02-20 Mondi AG Verfahren zur herstellung eines seitenfaltenbeutels sowie flachliegender, unbefüllter seitenfaltenbeutel
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DE102014116820A1 (de) 2016-05-19
US20160137378A1 (en) 2016-05-19
HUE038518T2 (hu) 2018-10-29
US10183796B2 (en) 2019-01-22
DE202015008996U1 (de) 2016-06-09
ES2662860T3 (es) 2018-04-10

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