EP3954624A1 - 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
EP3954624A1
EP3954624A1 EP20191168.2A EP20191168A EP3954624A1 EP 3954624 A1 EP3954624 A1 EP 3954624A1 EP 20191168 A EP20191168 A EP 20191168A EP 3954624 A1 EP3954624 A1 EP 3954624A1
Authority
EP
European Patent Office
Prior art keywords
front wall
packaging bag
reclosure
closure elements
closure
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
EP20191168.2A
Other languages
German (de)
English (en)
Other versions
EP3954624B1 (fr
Inventor
Alfons Kruse
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
Priority to ES20191168T priority Critical patent/ES2976288T3/es
Priority to PL20191168.2T priority patent/PL3954624T3/pl
Priority to HUE20191168A priority patent/HUE066164T2/hu
Priority to EP20191168.2A priority patent/EP3954624B1/fr
Priority to FIEP20191168.2T priority patent/FI3954624T3/fi
Publication of EP3954624A1 publication Critical patent/EP3954624A1/fr
Application granted granted Critical
Publication of EP3954624B1 publication Critical patent/EP3954624B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B65D33/24—End- or aperture-closing arrangements or devices using self-locking integral or attached closure elements, e.g. flaps
    • 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
    • B65D2313/00—Connecting or fastening means
    • B65D2313/02—Connecting or fastening means of hook-and-loop type

Definitions

  • the invention relates to a packaging bag with a bag body having two front walls, the bag body being closable via a reclosure arranged at an upper end by folding the front walls over, and the reclosure having two cooperating closure elements which are arranged on the outer sides of the front walls.
  • the upper and lower ends refer to end portions of the bag body in relation to its height, the lower end usually forming the bottom of the bag body.
  • the width accordingly extends between the sides of the bag body so that the front walls are folded or can be folded over along their width.
  • a reclosure means a closure that allows the packaging bag to be resealed after it has been opened for the first time, although it is not necessary for the entire opening formed by the two front walls to be closed by the reclosure. Rather, it is sufficient if the opening can be limited at least to a certain extent with the aid of a reclosure, so that the contents of the bag can be substantially prevented from escaping from the bag opening or from the area between the two front walls.
  • Such packaging bags are basically known from the prior art, with the front walls having to be folded over at least in some areas at an upper end so that the individual closure elements arranged on the outer walls of the front walls can be brought into contact with one another and then interact in such a way that they create structural cohesion.
  • the two closure elements can be separated from one another again by the action of the user, so that it is possible to open and close the packaging bag several times and to remove the contents of the packaging bag at different times.
  • Such packaging bags are basically known from the prior art.
  • the U.S. 7,406,810 B2 a packaging bag with a reclosure in the form of a Velcro fastener, the cooperating fastener elements of the Velcro fastener being arranged on the outer sides of the two front walls at respectively different heights, so that the two fastener elements can be brought into abutment when the head portion is folded over twice.
  • a similar design also shows the US 4,706,297A , wherein a second reclosure is additionally provided and the closure elements of both reclosures are arranged one below the other on the outside of both front walls.
  • a second reclosure is additionally provided and the closure elements of both reclosures are arranged one below the other on the outside of both front walls.
  • a packaging bag in which one of the front walls has a greater extension in the longitudinal direction than the other front wall, so that the packaging bag can be closed by folding over the longer section, with a Velcro fastener additionally being provided, which connects the inside of the longer front wall with connects to the outside of the shorter front wall.
  • a Velcro fastener additionally being provided, which connects the inside of the longer front wall with connects to the outside of the shorter front wall.
  • the present invention is based on the object of specifying a packaging bag which, compared to the previously known prior art, is distinguished by an improved reclosure option which on the one hand ensures the tightest possible closure and on the other hand easy handling.
  • the present invention proposes that the bag body has a second reclosure with two cooperating closure elements, with at least one of the closure elements being arranged on an inside of the first front wall.
  • the packaging bag can first be made by closing the second reclosure, with the arrangement of at least one closure element on an inside of the first front wall already achieving a certain blocking effect with respect to the opening formed by the front walls. If, for example, both closure elements are arranged on an inner side, they can be brought into contact with one another without folding over the two front walls and at least partially close the opening.
  • the closure elements of the first reclosure which are arranged and fastened on the outside of the front walls, can also be brought into contact with one another in an upper area by folding the front walls twice, so that the bag has only five layers in the area of the top fold, despite a double closure .
  • the other closure element of the second reclosure is arranged on an outside of the second front wall, with the front walls being designed in such a way that the two closure elements of the second reclosure are brought into contact with one another by being folded over once at an upper end of the packaging body be able.
  • the first reclosure can then also be closed by further folding over, so that even with such an embodiment only folding over twice is necessary and a stable and secure top seam is nevertheless formed.
  • the front walls must be designed in such a way that the first front wall is folded over or folded over onto the second front wall, at least in the area of the closure elements. can be folded over.
  • This can be achieved, for example, by designing the first front wall to be longer than the second front wall in a vertical direction running along the side edges, so that the area of the first front wall that projects beyond the second front wall can be folded over accordingly, so that the closure element can then be folded over accordingly protruding area is arranged.
  • such an embodiment is of course also suitable if both closure elements are arranged on the inner walls of the front walls.
  • the second reclosure could be closed first and then the protruding area could be folded over.
  • the front wall has a recess which is designed in such a way that the second re-closure engages through the second front wall through the recess in a closed state.
  • the cutout is therefore usually a cutout on an upper edge of the bag body, with the cutout being arranged and dimensioned in such a way that it is opposite the closure element of the second reclosure, which is arranged on the inside of the first front wall, with the size of the cutout depending on oriented to the size of the closure element and thus has at least one size that corresponds to that of the closure element.
  • the recess preferably has a width of between 10 and 60 mm, particularly preferably between 20 and 50 mm.
  • the height can be between 5 and 25 mm, preferably between 10 and 20 mm, with the width and height of the recess running parallel to the width and height of the bag body.
  • this closure element is located below the recess, with the alignment in a width direction being based on the position of the closure element on the inside of the first front wall.
  • the first and/or the second reclosure is designed in the form of a Velcro fastener.
  • one closure element of a re-closure can be formed with hooks and the other closure element in each case with loops, so that the hooks of one closure element can hook into the loops of the other closure elements.
  • the two closure elements can also be designed to be self-retaining, so that there are no significant structural differences with regard to the individual closure elements.
  • other reclosures can also be used, e.g. B. adhesive strips, snaps, magnets or the like.
  • a closure element of the first reclosure is arranged on the outside and a closure element of the second reclosure is arranged on the inside of the first front wall, with the inside referring to a side forming the interior of the bag body.
  • the closure elements of the two reclosures are thus arranged on opposite sides of the first front wall, with the closure elements of the reclosures arranged on the first front wall preferably being arranged in alignment with one another.
  • an aligned arrangement means an arrangement in which the centers of gravity of the individual reclosures are arranged at the same height and width position on different sides of the front wall.
  • the shapes of the individual closure elements can therefore also differ in principle. However, rectangular, square, round or elliptical shapes are preferably suitable for the individual closure elements of the reclosures.
  • the closure elements of the reclosures are arranged vertically one above the other on the second front wall.
  • the closure elements are, for example, one closure element of the first reclosure and one closure element of the second reclosure.
  • the closure elements are preferably in the same position with respect to a width direction and are therefore only spaced apart from one another in the height direction.
  • the design of the packaging bag according to the invention is basically suitable for different materials and includes, among other things, foil packaging bags in which foils, in particular plastic foils, are used as the material.
  • the bag body is particularly preferably formed at least partially from paper or on a paper basis.
  • packaging bags made of paper are only rarely equipped with costly reclosures because, on the one hand, paper only has a comparatively low barrier effect to the environment, so that reclosure is not absolutely necessary in order to improve the barrier properties.
  • paper also has good so-called "dead-fold" properties, in which case a certain blocking effect is achieved simply by folding it over, since the fold does not or only barely recover.
  • the inventive arrangement of two reclosures creates a particularly easy-to-handle possibility of closing a packaging bag made of paper.
  • the invention also includes packaging bags in which the used Material for the bag body is formed from several layers, and only one of these layers can be made of paper.
  • this can be coated paper, in which case improved barrier properties can be imparted to the material by the coating.
  • two or more layers of paper can be laminated together via an adhesive layer.
  • Kraft paper is preferably used as the paper.
  • an inner layer can also be formed by kraft paper and an outer layer by coated paper, which can be printed very well and enables a high-quality visual appearance.
  • the bag body has side folds which are arranged between the front walls and connect the front walls. Side folds can increase the capacity of the packaging bag. They also contribute to the stability of the packaging bag when it is filled.
  • the front walls can preferably also be connected to one another at a lower edge with a bottom fold, so that the packaging bag has an approximately cuboid appearance when it is filled.
  • the invention is not limited to such configurations. In principle, and also in particular when using gussets, the base can be closed by simply folding it over and gluing it.
  • the reclosures are provided so that the packaging bag can be resealed in a simple manner after it has been opened for the first time, while at the same time a good, albeit not absolute, barrier effect with respect to the environment is to be produced. As a rule, this is also not necessary, since, especially when used in connection with food or animal feed, a rapid removal takes place after opening for the first time. However, it should still be ensured that at least until it is opened for the first time, an extensive barrier effect can be enabled.
  • the bag body can also have a non-reclosable closure at an upper end, via which the upper end of the bag body can be closed.
  • the resealable closure can form an originality closure, so that not only is a barrier effect achieved, but it is also possible to identify whether the packaging bag has already been opened or not.
  • the non-resealable closure is preferably secured via at least one layer of adhesive, e.g. B. formed a layer of glue or a layer of hot-melt adhesive, which is arranged on the outside of the first and / or the second front wall.
  • adhesive layer e.g. B. formed a layer of glue or a layer of hot-melt adhesive, which is arranged on the outside of the first and / or the second front wall.
  • a further non-reclosable closure of the type described above is arranged on the insides of the front walls and thus ensures the tightness of the bag body.
  • the invention provides that closure elements of a first and a second reclosure are each arranged and fastened to the web sections of the material web, with the closure elements of the two reclosures being arranged on opposite sides of the material web at least in the web section forming the first front wall.
  • the closure elements arranged in the web section forming the second front wall are arranged and fastened on the second front wall only after the bag body has been separated and thus also only after the material tube has been formed.
  • the closure elements are first arranged and fastened on the first front wall and then the material tube is formed by folding the material web. After separating individual bag bodies, they are rotated by 90° and then the closure elements arranged and fastened on the second front wall. The result of the rotation is that the upper ends of the respective bag bodies directly adjoin one another and are arranged one behind the other in the direction of production.
  • Such an embodiment is particularly useful when at least one layer of adhesive is applied to the web of material or to the bag body in the area of the reclosures in order to form a non-reclosable closure.
  • adhesive in particular glue or hot-melt adhesive
  • the application of the closure elements and the adhesive layer can also be combined with one another.
  • an adhesive layer is first applied to the outside and then the closure elements are also attached via this adhesive layer. Nevertheless, the invention is not limited to such a method.
  • an adhesive application can already take place on the material web. However, this is then necessary at discrete locations on the material web.
  • a perforation line is introduced into the web of material, which extends over the entire width, with two successive bag bodies being separated from one another by severing the tubular body at the perforation line.
  • the individual bag bodies are separated in such a way that the individual successive tubular bodies are pulled apart and apart from one another by the application of an external force to be separated.
  • the individual bag bodies it is of course also within the scope of the invention for the individual bag bodies to be separated from one another by a cut.
  • the perforation line can also be designed in such a way that after the perforation line has been separated, a recess remains in an upper end of the web section of the material web remaining in the second front wall. Accordingly, the perforation line is not continuously linear but in a central section in the form of the recess, wherein after separating the perforation line on an adjoining bag body, an additional section in the form of the recess remains at a lower end, which is separated by an additional trimming.
  • the recess can also be made in an upper end of the web section of the material web that forms the second front wall before the hose body is formed. This can be done, for example, by trimming or by punching out.
  • the 1 shows a packaging bag according to the invention with a first front wall 1 and a second front wall 2, the front walls 1, 2 together with the side folds 3 arranged between the front walls 1, 2 forming a bag body 4.
  • an adhesive layer 5 is provided on the outside of the second front wall 2, which is, for example, a hot-melt adhesive or a glue, and the bag body 4 is closed in that the upper end of the bag body 4 is closed by a joint folding of the front walls 1, 2 takes place. This is usually done by folding it over twice, so that both the second front wall 2 and the first front wall 1 can come into contact with the adhesive layer 5 .
  • the adhesive layer 5 is designed in such a way that on the one hand it effectively closes the bag body 4 and at the same time can also be opened in a simple manner. However, the adhesive layer 5 is not suitable for enabling the bag body 4 to be reclosed again, so that it is consequently only a non-recloseable closure.
  • reclosures 6, 7 are provided, the first reclosure 6 being formed from two interacting closure elements 6a, 6b and the second reclosure 7 from two interacting closure elements 7a, 7b. Based on 1 it becomes clear that fastener elements 6a, 6b of the first reclosure are arranged exclusively on the outsides of the front walls 1,2. In contrast, the closure element 7a of the second reclosure 7 is located on an inside of the first front wall 1.
  • the reclosures 6, 7 are so-called hook-and-loop fasteners, in which case one of the closure elements 6a, 7a is designed with hooks and the corresponding closure elements 6b, 7b that interact therewith are designed with loops.
  • all the closure elements 6a, 6b, 7a, 7b of a reclosure 6, 7 can be of the same design, in which case they are so-called self-retaining hook and loop fasteners.
  • Paper is provided as the material for the bag body, which can also have a coating, e.g. B. has a plastic coating.
  • a recess 8 is also of particular importance, this recess 8 being formed in the second front wall 2 in such a way that the second re-closure 7 in a closed state penetrates the second front wall 2 through the recess 8 penetrates through.
  • the recess 8 is arranged directly opposite the closure element 7a, so that when the two front walls 1, 2 are placed one on top of the other, the closure element 7a can reach through the second front wall 2.
  • the second front wall 2 can also be shortened, in which case the entire front wall 2 is made so short that the closure element 7a overlaps the second front wall 2 when it is laid flat.
  • the upper end can be folded over again, in which case the closure elements 6a, 6b of the first reclosure are brought into contact with one another and the first reclosure 6 is thus closed.
  • the closure elements 6 a , 7 a on the first front wall 1 are arranged in alignment with one another on different sides of the front wall 1 .
  • the closure element 6a is thus aligned parallel to the outside of the second front wall 2 and is then located directly above the closure element 6b.
  • the closure elements 6a, 6b can thus be connected to one another by further folding.
  • closure elements 6b, 7b of the reclosures 6, 7 are arranged on the second front wall 2 in the longitudinal direction one above the other.
  • closure elements 6b, 7b are also located directly below the recess 8 or directly below the closure elements 6a, 7a in a view of the two front walls 1, 2 projected onto one another.
  • the production of the packaging bag according to the invention can be based on the Figures 3A , 3B
  • the method shown is carried out, wherein first a material web 9 with two web sections 10, 11 arranged next to one another and forming the front walls 1, 2 is fed in a production direction P.
  • closure elements 6a, 7a are arranged and fastened on both sides in a web section 10 on the material web 9, with the closure element 6a being arranged on a side of the material web 9 which is intended to form the outside and with the closure element 7a being arranged on one side of the material web 9, which is intended to be the inside forming side is arranged.
  • a perforation line 12 is then introduced transversely to the production direction P, with the perforation line 12 extending completely across the entire width of the material web 9 and with the perforation line 12 being formed in such a way that after the perforation line 12 has been separated, a recess 8 is left on one upper end of the web section 11 forming the second front wall 2 remains.
  • a material tube 13 is formed by folding the material web 9, the web sections 10, 11 lying opposite one another.
  • the folding takes place in such a way that after the folding process, the tube of material 13 has side folds 3 arranged between the web sections 10, 11 and connecting the web sections 10, 11.
  • the edges can also be trimmed, so that side edges are formed that lie exactly on top of one another when laid flat.
  • the bag body 4 is rotated through 90° to the production direction P, so that all the upper ends of the bag bodies 4 are aligned in the production direction P one behind the other.
  • An adhesive layer 5 is then applied to the outside of the second front wall 2, the adhesive layer 5 being provided on the one hand to form a non-reclosable closure or an originality closure and on the other hand to fasten the closure elements 6b, 7b.
  • the bag body 4 can then be closed at an upper end by folding the front walls 1, 2 twice over.
  • FIG. 1 An alternative manufacturing process shows the 4 where in contrast to the method according to Figures 3A , 3B all closure elements 6a, 6b, 7a, 7b of the first and second reclosure 6, 7 are arranged and fastened on the material web 9 before a material tube 13 is formed.
  • the closure element 7a is in the 4 not shown directly as it is positioned and secured on the opposite side of track section 10.
  • adhesive layers 5 are provided at discrete locations in both edge sections 10, 11, which serve to form a non-recloseable closure.
  • the individual closure elements 6a, 6b, 7a, 7b are also preferably attached to the material web 9 via an adhesive layer.
  • a punched-out portion is introduced to form a recess 8, for which purpose the movement of the material tube 13 is preferably stopped and the punched-out portion is carried out.
  • the individual bag bodies 4 are separated and the upper end of the bag body 4 is closed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
EP20191168.2A 2020-08-14 2020-08-14 Sac d'emballage ainsi que procédé de fabrication d'un sac d'emballage Active EP3954624B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES20191168T ES2976288T3 (es) 2020-08-14 2020-08-14 Bolsa de envasado, así como procedimiento para la fabricación de una bolsa de envasado
PL20191168.2T PL3954624T3 (pl) 2020-08-14 2020-08-14 Worek opakowaniowy i sposób wytwarzania worka opakowaniowego
HUE20191168A HUE066164T2 (hu) 2020-08-14 2020-08-14 Csomagolótáska és eljárás csomagolótáska elõállítására
EP20191168.2A EP3954624B1 (fr) 2020-08-14 2020-08-14 Sac d'emballage ainsi que procédé de fabrication d'un sac d'emballage
FIEP20191168.2T FI3954624T3 (fi) 2020-08-14 2020-08-14 Pakkauspussi sekä menetelmä pakkauspussin valmistamiseksi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20191168.2A EP3954624B1 (fr) 2020-08-14 2020-08-14 Sac d'emballage ainsi que procédé de fabrication d'un sac d'emballage

Publications (2)

Publication Number Publication Date
EP3954624A1 true EP3954624A1 (fr) 2022-02-16
EP3954624B1 EP3954624B1 (fr) 2024-01-31

Family

ID=72087988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20191168.2A Active EP3954624B1 (fr) 2020-08-14 2020-08-14 Sac d'emballage ainsi que procédé de fabrication d'un sac d'emballage

Country Status (5)

Country Link
EP (1) EP3954624B1 (fr)
ES (1) ES2976288T3 (fr)
FI (1) FI3954624T3 (fr)
HU (1) HUE066164T2 (fr)
PL (1) PL3954624T3 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4706297A (en) 1986-04-16 1987-11-10 Minigrip, Inc. Foldable top bag and method
US4955981A (en) 1985-10-24 1990-09-11 Velcro Industries B.V. Reclosable bag having hook and loop sealing strips
WO1997046461A1 (fr) * 1996-06-03 1997-12-11 Nutresco S.A. Emballage pour aliments, en particulier pour aliments pour animaux domestiques
US20070235352A1 (en) * 2006-04-07 2007-10-11 Madson Craig J Foldable utility receptacle and method
US7406810B2 (en) 1998-11-06 2008-08-05 Velcro Industries B.V. Reclosable packaging
US20120052161A1 (en) * 2010-09-01 2012-03-01 Graphic Packaging International, Inc. Bag With Refastenable Foldover Closure And Pour Spout

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4955981A (en) 1985-10-24 1990-09-11 Velcro Industries B.V. Reclosable bag having hook and loop sealing strips
US4706297A (en) 1986-04-16 1987-11-10 Minigrip, Inc. Foldable top bag and method
WO1997046461A1 (fr) * 1996-06-03 1997-12-11 Nutresco S.A. Emballage pour aliments, en particulier pour aliments pour animaux domestiques
US7406810B2 (en) 1998-11-06 2008-08-05 Velcro Industries B.V. Reclosable packaging
US20070235352A1 (en) * 2006-04-07 2007-10-11 Madson Craig J Foldable utility receptacle and method
US20120052161A1 (en) * 2010-09-01 2012-03-01 Graphic Packaging International, Inc. Bag With Refastenable Foldover Closure And Pour Spout

Also Published As

Publication number Publication date
FI3954624T3 (fi) 2024-04-17
ES2976288T3 (es) 2024-07-29
EP3954624B1 (fr) 2024-01-31
PL3954624T3 (pl) 2024-06-10
HUE066164T2 (hu) 2024-07-28

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