EP2822867A1 - Sachet à soufflets latéraux constitué d'un tissu composite en matière synthétique et son procédé de fabrication - Google Patents

Sachet à soufflets latéraux constitué d'un tissu composite en matière synthétique et son procédé de fabrication

Info

Publication number
EP2822867A1
EP2822867A1 EP13703630.7A EP13703630A EP2822867A1 EP 2822867 A1 EP2822867 A1 EP 2822867A1 EP 13703630 A EP13703630 A EP 13703630A EP 2822867 A1 EP2822867 A1 EP 2822867A1
Authority
EP
European Patent Office
Prior art keywords
tube
plastic fabric
gusseted
material web
front walls
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.)
Granted
Application number
EP13703630.7A
Other languages
German (de)
English (en)
Other versions
EP2822867B1 (fr
EP2822867B2 (fr
Inventor
Detlef Stöppelmann
Jochen Brauer
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 Halle GmbH
Original Assignee
Mondi Halle GmbH
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
Family has litigation
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Application filed by Mondi Halle GmbH filed Critical Mondi Halle GmbH
Publication of EP2822867A1 publication Critical patent/EP2822867A1/fr
Publication of EP2822867B1 publication Critical patent/EP2822867B1/fr
Application granted granted Critical
Publication of EP2822867B2 publication Critical patent/EP2822867B2/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B65D29/00—Sacks or like containers made of fabrics; Flexible containers of open-work, e.g. net-like construction
    • B65D29/02—Sacks with laminated or multiple walls
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/88—Printing; Embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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
    • B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • 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
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without 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
    • 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

Definitions

  • the present invention relates to a method for producing a side-folding bag made of a plastic fabric composite and a corresponding flat side gusset bag.
  • the flat side gusseted bag is separated from a gusseted tube and usually closed at only one of its two ends to be filled from the other end and finally completely closed.
  • the filled gusseted bag is intended as a packaging bag, in particular for pourable products such as pelleted pet food, litter for animals or similar materials.
  • the side gusset bag is particularly suitable for large containers due to the use of the plastic fabric composite, which have a considerable filling volume and a considerable filling weight.
  • the present invention relates to side gusset bags made of a plastic fabric composite, which has in the flat state opposite front walls, interposed gussets and folded edges between the front walls and the side folds.
  • the plastic fabric composite comprises a plastic fabric and at least one closed plastic layer, wherein the plastic fabric is usually arranged on the inside of the packaging bag.
  • the plastic fabric is usually formed from a heat-sealable material, a tight seal due to the fabric structure is impossible or at best limited. Unlike conventional film bags, it is therefore not possible or expedient to use a material
  • a side gusset tube is shaped such that edge portions of the material web overlap, in which case the outer edge portion associated first side of the web is connected by an adhesive with the inner edge portion associated second side to the gusseted tube circumferentially close.
  • a generic flat side gusset bag is known from EP 1 899 235 B1 and DE 101 06 289 A1.
  • the gussets extend over a maximum of one third of the width of the front walls, ie over a maximum of one third of the width of the flat side gusseted bag.
  • a web of material is first formed into a gusseted tube with the edges of the web of material overlapping in an area between the gussets where they are bonded by an adhesive after formation of the gusseted tube.
  • adhesives conventional adhesives such as solvent-based adhesive or hot melt adhesives can be used.
  • the overlap region is always arranged in the known designs on one of the front walls approximately centrally between the two side folds. This front wall usually forms the back of the gusseted bag due to the visual impairment.
  • the overlapping region extending approximately centrally on the rear side can be perceived as disturbing, in particular if an imprint is also provided there.
  • the design options in the known, formed from a plastic fabric composite side gusseted bags are considerably limited.
  • the invention has for its object to provide a method for producing a gusseted bag and a gusseted bag itself, in which the disadvantages described are avoided.
  • the invention and solution of the problem are a method for producing a gusseted bag made of a plastic fabric composite according to claim 1 and a flat-lying gusseted bag made of a plastic fabric composite according to claim 14.
  • a material web is supplied with a plastic fabric and at least one closed plastic layer and formed into a tube that overlap edge portions of the material web and a first side of the material web, the inner surface and a second of the material web form the outer surface.
  • the first side of the material web assigned to the outer edge section is connected by an adhesive to the second side associated with the inner edge section in order to close the hose on the circumference.
  • Suitable adhesives are customary adhesives, such as solvent-based adhesives or hot-melt adhesives.
  • a molten plastic may be provided as an adhesive.
  • the term adhesive thus includes conventional adhesives within the scope of the invention, but is not limited to such adhesives.
  • a simple tube is first formed. In the flat state, this simple tube, at least outside the overlap region, formed from two layers of the material web.
  • the tube is first closed and subsequently fed to a folding device with which a flat side gusseted tube with opposite front walls, interposed gussets and folding edges between the front walls and the side gussets is formed so that the gusseted tube, at least outside the overlap region, at the side gussets respectively four layers and between the gussets has two layers of the material web.
  • a closed tube is first formed by the connection at the overlap region and only then is a flat side gusseted tube, the overlapping region can be largely freely positioned.
  • the overlapping region is arranged at least partially in a section of the gusseted tube formed from four layers of the material web. The overlap area is thus located either on one of the gussets or on a front wall on one of the gussets.
  • the overlap region extends beyond one of the folded edges.
  • the overlap area can easily be applied directly to one of the fold edges.
  • Invention usually without a prior winding of the gusseted hose. Due to the arrangement of the overlap region in the region of one of the gussets, winding is disadvantageous, because then a roll with a non-uniform thickness would be produced during the winding.
  • the material web is formed by the lamination of the plastic fabric with a film, wherein the plastic fabric forms the surface on the first side and the film forms the surface on the second side of the material web.
  • a lamination with adhesive or preferably an extrusion lamination is possible, wherein a molten polymer film is introduced between the film and the plastic fabric.
  • Such a polymer film may be single-layer or multi-layered. When a multilayer film is inserted, it is produced by coextrusion, whereby an optimal connection to the plastic fabric on the one hand and to the outer film on the other hand can be achieved.
  • the films lying outside on the side-folding bag can already be provided with an imprint prior to the lamination.
  • This imprint is then conveniently placed on the side which is laminated with the plastic fabric.
  • the plastic fabric composite thus formed the imprint is then protected inside protected.
  • the plastic fabric to form the plastic fabric composite can also be coated with a molten plastic layer. Even with such a configuration, a high stability can be provided by the plastic fabric, while the applied plastic layer causes a tight seal
  • the plastic coating thus formed can only be provided with an external imprint.
  • this can be provided with a protective coating to achieve a high abrasion resistance.
  • the protective lacquer may also be intended to produce a dull, blunt surface.
  • a matte, blunt surface is preferred to prevent slippage when stacking the filled gusseted bags.
  • in the lamination with a film for the outer layer is preferably provided a matte, dull in its surface texture polymer material.
  • the outer edge of the material web is visible on the outer edge section.
  • the overlap region is therefore expediently formed so that the outer edge of the material web is arranged on the side of the overlap region, which is adjacent to the nearest folded edge. With such a configuration, the outer edge of the material web can be applied directly to the closest folded edge.
  • the distance of the outer edge to the nearest folded edge is less than 80 mm.
  • the plastic fabric is expediently formed from strips or ribbons of a stretched film, with a first group of ribbons and a second group of ribbons producing at right angles or approximately at right angles. It is known to produce corresponding plastic fabrics on circular weaving machines.
  • the width of the crossing ribbon is usually between 2 mm and 4 mm, in particular between 2.5 mm and 3.2 mm.
  • the stretched in their longitudinal direction plastic tapes are usually made of polyolefin, in particular polypropylene.
  • plastic fabrics having a basis weight of between 50 g / m 2 and 100 g / m 2 , for example having a weight per unit area of about 72 g / m 2, are suitable.
  • the plastic fabric is not readily heat sealable due to its fabric structure.
  • the synthetic fabric may optionally also be provided in sections or over the whole area with a heat-sealable coating or with glued-on heat-sealable film sheets.
  • the gusseted bag according to the invention is particularly suitable for a large filling volume and a high weight. Against this background, it may be appropriate to provide the gusseted bag with a carrying handle. Due to the lack of heat-sealability of the inner plastic fabric, in particular a carrying handle glued onto the outer surface of the side-folding bag is possible. As already explained, individual heat-sealable foil labels can also be placed on the inside, to which then a carrying handle can also be fastened.
  • the gusseted bag is formed entirely of polyolefin and particularly preferably entirely of polypropylene (PP).
  • PP polypropylene
  • the gusseted bag can easily be recycled or incinerated residue-free.
  • the film arranged on the outside of the gusseted bag can be formed, for example, from polypropylene, in particular a biaxially oriented polypropylene (BO-PP).
  • the layer thickness of such a film is preferably between 10 and 40 ⁇ , more preferably between 15 and 30 ⁇ .
  • a molten film is introduced between the outermost film and the plastic fabric, which film must be of sufficient thickness to create a secure bond despite the somewhat irregular structure of the plastic fabric.
  • the film intended for connection is preferably introduced with a basis weight of between 25 g / m 2 and 40 g / m 2 .
  • the molten film can be extruded in one layer or coextruded in multiple layers.
  • a thin adhesion promoter layer is expediently provided in the direction of the film lying on the side fold bag.
  • the outer film and the plastic fabric can be provided with a primer prior to lamination in order to increase the bond strength.
  • the application of primer on the film is useful if this is printed. In that case, sufficient adhesion of the molten film to the print must be achieved.
  • a simple tube is formed, which is closed on the circumferential side at the overlapping area.
  • the tube is formed lying flat with two lateral crease lines, wherein the tube is subsequently formed into the gusseted tube so that the crease lines are respectively arranged on one of the folded edges of the gusseted tube.
  • the finished gusseted bag is then diagonally opposite folded edges.
  • the formation of the tube from the material web, the circumferential closure of the material web in the overlapping region and the formation of the gusseted tube preferably take place on a continuous continuous strand in successive process stages.
  • a mass production is possible, wherein a propulsion speed of the strand, for example, at least 70 m / min. preferably 100 m / min. (Meters per minute) can be.
  • the length of the individual pieces of hose separated from the gusseted hose is preferably between 700 mm and 1200 mm. Taking into account the aforementioned propulsion speed, this results in a typical cycle rate of about 100 pieces of tubing and thus 100 gusseted bags per minute.
  • the separated pieces of hose are initially open at both ends. Conveniently, however, the hose pieces are closed immediately after separation at one of their ends. Thus, one of the open ends of the hose pieces can be rolled up and fixed in the rolled-up state.
  • a first strip of the tube piece is usually folded by 180 ° and then a second strip with the first strip arranged thereon is likewise folded by 180 °.
  • gusseted bags may have a width of about 20 mm each.
  • the fixation can be done for example by an adhesive strip, by means of adhesive or by hot air.
  • the closed end forms the bottom of the gusseted bag, it is subsequently filled into a filling line at its upper end and then closed at its upper end.
  • a closure can be done for example by sewing or gluing.
  • the end of the tube pieces which is closed immediately during production is provided as the upper edge of the side-fold bags.
  • the rolled-up end can be fixed by a removable adhesive strip.
  • the peelable adhesive strip allows a particularly easy opening of the filled gusseted bag to be achieved.
  • the bag thus prepared is then filled from the lower end and closed there.
  • the front wall with the clearly visible overlapping area and the rolled-up end is usually arranged on the back of the bag.
  • a peelable adhesive strip is then not immediately visible to the user.
  • the overlap region is arranged far out in the region of one of the side folds and thus less disturbs the visual appearance.
  • the corresponding front wall of the gusseted bag can therefore be provided as a front, in which case a
  • removable adhesive strip on a rolled-up end also located at the front and is immediately visible.
  • the basis weight of the plastic fabric composite is preferably between 100 g / m 2 and 150 g / m 2 .
  • FIG. 1 shows a section of a gusseted tube in a perspective view
  • FIG. 2 shows the gusseted tube according to FIG. 1 in a plan view
  • FIG. 3 shows a gusseted bag formed from the gusseted tube according to FIG. 1, FIG.
  • FIG. 1 shows a gusseted tube 1 made of a plastic fabric composite 2, from which individual flat side gusset bags can be separated.
  • the gusseted tube 1 or the individual gusseted bags have opposite front walls 3a, 3b inserted between side gussets 4a, 4b and folding edges 5 between the front walls 3a, 3b and the side gussets 4a, 4b.
  • the plastic fabric composite 2 is formed by extrusion lamination of a film 6 forming the outer surface of the side pleated hose 1 and a plastic fabric 7 lying inside the side pleated hose 1.
  • the film 6 and the plastic fabric 7 are connected by an intermediate layer 8, which is introduced as a molten film in an extrusion lamination.
  • the plastic fabric 7, according to FIG. 1, has film strips which intersect one another and usually have a width of approximately 3 mm.
  • the basis weight of the plastic fabric 7 is 72 g / m 2 , wherein the strips are formed of polypropylene and each axially stretched.
  • the strips are usually arranged such that a first group of strips extends in the longitudinal direction of the gusseted tube 1 and a crossing second group of strips in the transverse direction.
  • the structure of the intersecting, stretched strips a particularly high stability of the gusseted bag is achieved. In particular, local damage such as punctures, cracks or the like can not spread through the plastic fabric composite 2.
  • the arranged on the outside of the gusseted tube 1 film 6 may for example be formed from a biaxially oriented polypropylene (BO-PP) with a thickness of typically 18 ⁇ . Preference is given to a comparatively blunt material in order to prevent slippage when stacking filled side-fold bags 15.
  • the intermediate layer 8, which is molten during lamination, is likewise made of polypropylene, so that the entire plastic fabric composite 2 consists of polypropylene and can therefore be easily recycled.
  • the basis weight of the intermediate layer 8 is for example 30 g / m 2 .
  • FIG. 1 also shows that the film 6 is printed on its surface adjoining the intermediate layer 8. This results in the advantage that this imprint 9 is optimally protected against external influences by the arrangement on an inner layer transition.
  • the plastic fabric 7 has a poor sealability, for which reason an overlap region 10 is provided for closing the side pleated hose 1, at which edge portions of the plastic fabric composite 2 supplied as a material web overlap.
  • adhesives such as solvent-borne adhesives and hotmelt adhesives
  • molten plastics come into consideration as adhesives.
  • molten polypropylene is particularly preferably applied.
  • the overlapping area 10 is located off of a side fold 4a, 4b or on one of the front walls 3a, 3b off-center, at least partially over one of the side folds 4a, 4b. It is therefore not readily possible first to form the gusseted tube 1 and then to produce the compound by the adhesive 1 1 in the overlap region 10.
  • a simple, flat-lying hose 12 is formed, which is peripherally closed at the overlap region 10 by the adhesive 1 1.
  • the closed tube 12 is subsequently fed to a folding device 13, with which the flat gusseted tube 1 described above is formed.
  • the hose 12 is expediently fed to the folding device 13 in such a way that two diagonally opposite folding edges 5 of the gusseted hose are formed from two lateral fold lines 14 of the hose 12.
  • the overlapping area 10 can also readily in the area of one of the side folds 4a, 4b, d. H. be formed on one of the side folds 4a, 4b or on one of the front walls 3a, 3b at least partially above one of the side folds 4a, 4b.
  • the formation of the tube 12 on the circumference of the supplied as a material web plastic fabric composite 2, the closing of the web in the overlapping region 10 and the formation of the gusseted tube 1 are carried out continuously on a continuous strand, preferably with a propulsion rate of at least 70 m / min. (Meters per minute) is moved.
  • closed end can form both the lower edge and the upper edge of the gusseted bag.
  • Fig. 3 shows a possible embodiment of a filled gusseted bag 15, in which one end is rolled up by a double folding on itself and is fixed in the rolled-up state by an adhesive strip 16.
  • the adhesive strip 16 is peelable so that the filled gusseted bag 15 can be easily opened.
  • the outer edge 17 of the plastic fabric composite 2 visible on the overlapping region 10 is arranged at a small distance from the adjacent folded edge 5.
  • the overlap region 10 can therefore also be arranged on the front side of the filled side-fold bag 15, on which the adhesive strip 16 is also provided.
  • the visual appearance of the printed front side of the filled side gusseted bag 15 is not substantially impaired by the overlapping region 10 arranged on the edge side.
  • the filled gusseted bag 15 shown in FIG. 3 has been filled from its underside and is closed there, for example by a seam 18, as is customary in sacks of paper or fabric.

Abstract

L'invention concerne un sachet à soufflets latéraux à plat constitué d'un tissu composite en matière synthétique (2) ainsi qu'un procédé pour le fabriquer. Le sachet à soufflets latéraux présente des parois frontales (3a, 3b) mutuellement opposées, des soufflets latéraux (4a, 4b) insérés entre celles-ci ainsi que des bords de pliage (5) entre les parois frontales (3a, 3b) et les soufflets latéraux (4a, 4b). Des portions de bordure du tissu composite en matière synthétique (2) sont assemblées l'une à l'autre dans une zone de chevauchement (10) au niveau d'une couture longitudinale, le tissu composite en matière synthétique (2) présentant un tissu en matière synthétique (7) et au moins une couche de matière synthétique fermée. Lorsque le sachet à soufflets latéraux repose à plat, les soufflets latéraux (5) s'étendent respectivement sur un maximum de 1/3 de la largeur des parois frontales. Conformément à l'invention, la zone de chevauchement (10) est disposée de manière excentrée au niveau de l'une des parois frontales (3a, 3b) au moins partiellement au-dessus de l'un des soufflets latéraux (4a, 4b) ou sur l'un des soufflets latéraux (4a, 4b). Pour pouvoir former un tel sachet à soufflets latéraux avec le procédé de fabrication, une première étape consiste à former tout d'abord une gaine (12) fermée à deux couches à partir de laquelle une gaine à soufflets latéraux (1) est ensuite façonnée.
EP13703630.7A 2012-03-07 2013-02-13 Sachet à soufflets latéraux constitué d'un tissu composite en matière synthétique et son procédé de fabrication Not-in-force EP2822867B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012101932A DE102012101932A1 (de) 2012-03-07 2012-03-07 Seitenfaltenbeutel aus einem Kunststoffgewebeverbund sowie Verfahren zu seiner Herstellung
PCT/EP2013/052899 WO2013131727A1 (fr) 2012-03-07 2013-02-13 Sachet à soufflets latéraux constitué d'un tissu composite en matière synthétique et son procédé de fabrication

Publications (3)

Publication Number Publication Date
EP2822867A1 true EP2822867A1 (fr) 2015-01-14
EP2822867B1 EP2822867B1 (fr) 2016-04-13
EP2822867B2 EP2822867B2 (fr) 2020-01-22

Family

ID=47683781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13703630.7A Not-in-force EP2822867B2 (fr) 2012-03-07 2013-02-13 Sachet à soufflets latéraux constitué d'un tissu composite en matière synthétique et son procédé de fabrication

Country Status (7)

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US (1) US9758279B2 (fr)
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EP2822867B1 (fr) 2016-04-13
CA2866195C (fr) 2019-02-12
CA2866195A1 (fr) 2013-09-12
US9758279B2 (en) 2017-09-12
EP2822867B2 (fr) 2020-01-22
MX2014010649A (es) 2015-04-13
MX342728B (es) 2016-10-11
WO2013131727A1 (fr) 2013-09-12
ES2574658T3 (es) 2016-06-21
ES2574658T5 (es) 2020-07-15
DE102012101932A1 (de) 2013-09-12
US20150030265A1 (en) 2015-01-29

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