EP2212217B1 - Sachet d'emballage en film et procédé pour fabriquer un sachet d'emballage en film - Google Patents

Sachet d'emballage en film et procédé pour fabriquer un sachet d'emballage en film Download PDF

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Publication number
EP2212217B1
EP2212217B1 EP07819803A EP07819803A EP2212217B1 EP 2212217 B1 EP2212217 B1 EP 2212217B1 EP 07819803 A EP07819803 A EP 07819803A EP 07819803 A EP07819803 A EP 07819803A EP 2212217 B1 EP2212217 B1 EP 2212217B1
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EP
European Patent Office
Prior art keywords
film
packaging bag
rear wall
front wall
film packaging
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.)
Not-in-force
Application number
EP07819803A
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German (de)
English (en)
Other versions
EP2212217A1 (fr
Inventor
Marcus Kujat
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.)
Nordenia Deutschland Halle GmbH
Original Assignee
Nordenia Deutschland 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
Application filed by Nordenia Deutschland Halle GmbH filed Critical Nordenia Deutschland Halle GmbH
Publication of EP2212217A1 publication Critical patent/EP2212217A1/fr
Application granted granted Critical
Publication of EP2212217B1 publication Critical patent/EP2212217B1/fr
Not-in-force 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
    • 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

Definitions

  • the invention relates to a film packaging bag having a front wall, a rear wall, a head portion closed by a transverse seam, and a tearable removal area which extends on one side of the film packaging bag from a first longitudinal side to the head portion.
  • a film packaging bag with the described structure is particularly suitable for the packaging of bulk materials.
  • pelleted pet food as packaging goods for example, detergents, cat litter, road salt and powdery or granular building materials into consideration
  • a dumping of the packaged goods is possible.
  • a subset should be removed, in which case a certain protection against environmental influences is desired for the remaining after a first opening in the film packaging bag. If the removal of subsets is provided, usually also an easy handling and the possibility of an accurate dosage is desired.
  • the publication US 6,007,246 relates to a resealable foil packaging bag with the features described above. By separating a corner of the film packaging bag, a removal opening is formed, which can be reclosed by a closure strip having profile strips. The removal of contents through the comparatively small removal opening is difficult.
  • the invention has for its object to provide a film packaging bag, which allows the removal of subsets, easy to handle and inexpensive to manufacture.
  • good machinability should also be ensured in the case of prefabricated film packaging bags which are provided for filling in a filling device.
  • each rupturable line of weakness is arranged that are provided on the inside of the bag film labels, each on both sides of one of the weakening lines on the inside of the bag are fastened and in the region of the associated weakening line have an expansion fold, wherein the limited by the weakening lines portion of the removal region to form a chute can be folded out and in which case the respective slots formed in the front wall and the rear wall are bridged by the expansion folds on the lines of weakness.
  • a large removal opening is formed in that the removal region can be pulled out accordion-like due to the expansion folds of the foil strip. In the removal state, the expansion folds are then usually stretched at least in sections.
  • the head section is opened or at least removed in the removal area.
  • the head section may for this purpose have a tearable sealing seam or a weakening line in order to be torn or torn off at least in the removal area by hand.
  • it can also be provided to cut off the head section completely or only in the removal area.
  • the lines of weakness to be cut through to form the chute expediently end at a distance in front of the first side edge, so that the side edge is not severed when the chute is folded out, in which case the pivot point of the fold-out chute lies approximately in extension of the weakening lines at or in the region of the first side edge ,
  • the drawn out chute can be folded back after removal of contents.
  • the removal opening is closed by the recombined expansion folds to a certain extent.
  • the inventive design of the removal area is often sufficient to avoid an impairment of the contents over a longer storage period. If the packaging bag falls over after its opening or is deposited on one side during handling, the embodiment of the removal region according to the invention prevents the filling material from escaping through the folded-in chute. By extending the chute, however, a large-area removal opening is formed, so that even coarse-sized contents can be easily removed or distributed.
  • the weakening lines which run obliquely in the removal region can be formed as a perforation or embossing. Additionally or alternatively, material removal, for example by means of a laser, may also be provided within the scope of the invention.
  • V-shaped slots are formed on the front and rear wall, which leak pointed in the direction of the first longitudinal side. The dimension of the expansion folds determines how far the chute can be folded out.
  • the weakening lines for forming the chute are arranged with respect to the first longitudinal side in a preferred embodiment of the invention at an angle ⁇ between 10 ° and 45 °, more preferably between 20 ° and 35 °. According to the invention, a large chute can already be formed at a small angle ⁇ with a large expansion fold, and folding out is also easily possible. At a very large angle ⁇ , on the other hand, both the sealing and the handling deteriorate.
  • the film packaging bag is designed as a side-folding bag, wherein side folds are inserted on the longitudinal sides between the front wall and the rear wall.
  • the side fold arranged on the first longitudinal side can then be pulled out in addition to the formation of a particularly large chute.
  • Gusseted bags are also characterized by a large capacity and good stackability.
  • the longitudinal sides can be advantageously provided with longitudinal sealing seams. Due to the longitudinal sealing seams, the longitudinal sides are stiffened, so that self-standing film packaging bags can be formed with a high-quality appearance.
  • a loop may be formed on the front wall and / or the rear wall adjacent to the weakening line running there, behind which the section of the removal region delimited by the weakening line can be inserted after a first opening.
  • a separate film strip on the front wall or the rear wall may be attached.
  • the loop is formed by at least one cut in the front wall or the rear wall, wherein the loop is covered on the inside of the bag by the foil tape associated with the front wall or the rear wall.
  • the front wall, the rear wall and the optionally provided gussets can each be formed by individual foil sheets.
  • the foil packaging bag from a common To form bag film by folding and sealing.
  • the bag film is then preferably formed at least two layers with a heat-sealable layer on the inside of the bag.
  • the bag outside can be formed from a difficult or impossible sealable material.
  • the inner surface of the bag film may for example be formed from a good sealable polyolefin.
  • composite films having an outer surface of polyethylene terephthalate (PET) and an inner surface of polyethylene (PE) are suitable. Between the inner surface and the outer surface further film layers can be arranged without any restrictions to increase the stability and / or the barrier effect.
  • a thin metal layer may be provided.
  • composite materials with layers of different polymers can be used in the invention, wherein preferably the polymer composition of the inner surface is designed such that at a suitable sealing temperature melts only the inner surface.
  • composites of coextruded polyethylene or multi-layer laminated sheets of high density polyethylene (HDPE) are suitable.
  • HDPE high density polyethylene
  • Such films are characterized by a good tensile, tear and dielectric strength.
  • the entire foil bag can be made of polyethylene and therefore easily recycled.
  • the film layer lying on the outer surface is typically printed on its outer or inner side. When printed on the inside of this is applied before lamination of the outer layer with at least one further, inner layer and is protected in the manufactured film packaging bag by its internal arrangement against abrasion. When printed on the outside, optionally a thin layer of a protective lacquer may be provided to protect the printed image.
  • the sheets of film are preferably attached to both sides of the associated weakening line by heat sealing and should therefore be easy to seal against the inside of the bag at least on one side.
  • the foil sheets also have a certain rigidity, so that the chute after use can be reliably folded back and held in the closed position.
  • the film strips may be multi-layered and have, in addition to a first layer of polyethylene, a second layer of polyethylene, polyethylene terephthalate or oriented polypropylene. If it is provided to seal the foil tape on optionally provided longitudinal sealing seams, the foil tape must be heat-sealable on both sides. Suitable examples are single or multi-layer polyethylene films.
  • this may have a carrying handle, which is preferably arranged on the head portion or the second longitudinal side.
  • the invention also provides a method for producing the above-described packaging bag, wherein pairs of weakening lines are introduced into a film web, which are oriented obliquely to the longitudinal direction of the film web, wherein at the weakening lines a sheet of foil provided with an expansion fold is attached to the film web, a first zone adjoining the expansion fold of the film pile is arranged on one side of the weakening line and a second zone adjoining the expansion fold on the other side of the weakening line, wherein from the film web by folding and sealing a flattened film tube having a front wall and a rear wall is formed such that the mutually associated weakening lines are arranged one above the other lying on the front wall and the rear wall and wherein from the film tube individual foil packaging bags are separated.
  • a foil strip is fed to form a stretch fold, the individual foil strips then being separated from the foil strip.
  • the attachment of the sheet of foil for example, by gluing or preferably by sealing.
  • the formed expansion fold is expediently oriented initially perpendicular to the plane of the film web and is then laid flat after being fastened to the film web.
  • Fig. 1a shows a film packaging bag 1 according to the invention with a front wall 2, a rear wall 3, a closed by a transverse seam 4 head portion 5 and a rupturable removal portion 6, which extends on one side of the film packaging bag 1 from a first longitudinal side 7a to the head portion 5.
  • a tearable, obliquely to the first longitudinal side 7a extending line of weakness. 8 arranged, which may be formed for example as a perforation.
  • film strips 9, 9 ' are provided, which are fastened on both sides of one of the weakening lines 8 on the inside of the bag and have an expansion fold 10 in the region of the associated weakening line 8.
  • Fig. 1b can be seen, the limited by the weakening lines 8 portion of the removal region 6 to form a chute 11 folded out, in which case in the folded state, each formed on the lines of weakness 8 V-shaped slots 12 in the front wall 2 and the rear wall 3 by the in Removal state stretched expansion creases 10 are bridged.
  • a part of the Head section 5 above the removal region 6 along a perforation 13 removed.
  • it can also be provided to cut off the head section 5 completely or partially.
  • the expansion folds 10 as in the in Fig. 1a shown initial state are folded again.
  • a good closure of the foil packaging bag 1 is achieved overall.
  • the lines of weakness 8 are arranged with respect to the first longitudinal side 7a at an angle ⁇ of about 30 °.
  • the front wall 2 and the rear wall 3 are connected to each other at the longitudinal sides 7a, 7b by longitudinal sealing seams 14, 14 '.
  • the weakening lines 8 end in front of the first longitudinal side 7a.
  • the expansion folds 10 preferably extend in a pointed manner in the direction of the first longitudinal side 7a in accordance with the shape of the V-shaped slots 12, with the height h of the expansion folds 10 correspondingly increasing starting from the first longitudinal side 7a.
  • the maximum height h max determines, as in Fig. 2b shown how far the chute 11 can be folded out.
  • the Fig. 2a to 2c show a designed as a gusseted bag film bag 1.
  • the front wall 2 and the rear wall 3 are connected by inserted gussets 15 together.
  • the entire head portion 5 is first demolished along a perforation 13 '.
  • the film packaging bag 1 is closed laterally of the removal region 6 at its top, an additional, laterally adjoining the removal region 6 transverse seam 4 'is provided below the head portion 5, which is preferably formed as all other connecting seams as a heat seal seam.
  • the upper end of the side fold 15a arranged on the first longitudinal side 7a is also folded out so that a particularly large removal opening is created.
  • the closure of the foil packaging bag 1 as in Fig. 2c shown, provided to fold the removal area 6 after the removal of contents.
  • the limited by the weakening lines 8 section of the removal region 6 is thereby inserted into a loop 16 which is formed by two cuts 17 in the front wall 2.
  • the loop 16 formed by the cuts 17 is thereby covered on the inside of the bag by the film label 9 arranged on the front wall 2.
  • a carrying handle 18 is sealed on the side fold 15b of the second longitudinal side 7b.
  • the Indian Fig. 3 illustrated sectional view along the line AA of Fig. 2a It can be seen that the front wall 2, the rear wall 3 and the side folds 15a, 15b of the film packaging bag 1 are formed by folding and sealing.
  • the longitudinal sealing seams 14, 14 'on the longitudinal sides 7a, 7b of the film packaging bag 1 a stiffening and in the filled state improved stability are achieved.
  • the edges of the bag film are connected to one another at a longitudinal sealing seam 14 '.
  • a film web 19 of a bag film is fed and provided at a uniform distance with two obliquely to the longitudinal direction of the web 19 extending lines of weakness r 8.
  • foil strips 20 are fed laterally.
  • folding and guide plates 21 are provided for the film strips 20, which form a stretch crease 10 in the film strip 20, wherein the height h of the expansion fold 10 increases in the direction of movement of the film strip 20.
  • the film strips 20 are fed cyclically and each laterally of the first aligned perpendicular to the plane of the web 19 elongated crease 10 sealed.
  • a flattened film tube 22 with a front wall 2, a rear wall 3 and interposed side folds 15a, 15b is then formed by folding and sealing such that the respective two weakening lines 8 are arranged one above the other lying on the front wall 2 and the rear wall 3 , Subsequently, longitudinal reinforcement seams 14, 14 'are produced for reinforcement on the longitudinal sides 7a, 7b, wherein the edges of the bag film are also connected to one of the longitudinal sealing seams 14'. Furthermore, a first transverse seam 4 'and above a second transverse seam 4 are generated. Between the first and second transverse seams 4, 4 ', a perforation 13' is provided, which has already been produced before. At the second transverse seam 4, the film tube 22 is severed, so that open film packaging bags 1 are formed at the lower end.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)

Claims (17)

  1. Sachet d'emballage en film avec une paroi frontale (2), une paroi arrière (3), une partie de tête (5) fermée par une soudure transversale (4) et une zone de prélèvement (6) déchirable, qui sur un côté du sachet d'emballage en film (1) s'étend à partir d'un premier côté longitudinal (7a) vers la partie de tête (5), caractérisé en ce que dans la zone de prélèvement (6) sur la paroi frontale et arrière (2, 3) est disposée chaque fois une ligne d'affaiblissement (8) déchirable, en ce que sur la face interne du sachet sont prévues des étiquettes en film (9, 9') qui sont fixées chacune de part et d'autre d'une ligne d'affaiblissement (8) sur la face interne du sachet et qui présentent chacune dans la zone de la ligne d'affaiblissement (8) associée un pli d'extension (10), la partie de la zone de prélèvement (6) délimitée par les lignes d'affaiblissement (8) étant escamotable pour former une goulotte de déversement (11) et les échancrures (12) alors formées chaque fois sur les lignes d'affaiblissement (8) dans la paroi frontale (2) et dans la paroi arrière (3) étant chevauchées par les plis d'extension (10).
  2. Sachet d'emballage en film selon la revendication 1, caractérisé en ce que sur les côtés longitudinaux (7a, 7b) entre la paroi frontale (2) et la paroi arrière (3) sont insérés des plis latéraux (15a, 15b), le pli latéral (15a) disposé sur le premier côté longitudinal (7a) étant escamotable dans la zone de prélèvement (6), après une première ouverture du sachet d'emballage en film (1).
  3. Sachet d'emballage en film selon la revendication 1 ou 2, caractérisé en ce que sous la partie de tête (5) est prévue une soudure transversale (4') supplémentaire se raccordant latéralement sur la zone de prélèvement (6).
  4. Sachet d'emballage en film selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les lignes d'affaiblissement (8) sont disposées par rapport au premier côté longitudinal (7a) sous un angle α compris entre 10° et 45°, de préférence entre 20° et 35°.
  5. Sachet d'emballage en film selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la paroi frontale et arrière (2, 3) sont formées par pliage et scellement d'un film à sachet.
  6. Sachet d'emballage en film selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les côtés longitudinaux (7a, 7b) sont munis de soudures de scellement longitudinales (14, 14').
  7. Sachet d'emballage en film selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'à partir du premier côté longitudinal (7a), la hauteur h du pli d'extension (10) augmente.
  8. Sachet d'emballage en film selon l'une quelconque des revendications 1 à 7, caractérisé en ce que sur la paroi frontale (2) et/ou sur la paroi arrière (3), dans le voisinage de la ligne d'affaiblissement (8) qui s'y étend est formée une boucle (16), dans laquelle, après une première ouverture, la partie de la zone de prélèvement (6) délimitée par les lignes d'affaiblissement (8) est insérable pour améliorer la fermeture.
  9. Sachet d'emballage en film selon la revendication 8, caractérisé en ce que la boucle (16) est formée par au moins une entaille (17) dans la paroi frontale (2) ou dans la paroi arrière (3), sur le côté intérieur du sachet, la boucle (16) étant recouverte par l'étiquette en film (9) associée à la paroi frontale (2) ou à la paroi arrière (3).
  10. Sachet d'emballage en film selon l'une quelconque des revendications 1 à 9, caractérisé par une poignée (18) sur la partie de tête (5) ou sur le deuxième côté longitudinal (7b).
  11. Procédé de fabrication d'un sachet d'emballage en film selon l'une quelconque des revendications 1 à 10,
    dans une bande de film (19) des lignes d'affaiblissement (8) associées par paire qui sont orientées en inclinaison par rapport à la direction longitudinale de la bande de film (19) étant ménagées,
    sur les lignes d'affaiblissement (8), une étiquette en film (9, 9') munie d'un pli d'extension (10) étant fixé sur la bande de film (19), de telle sorte qu'une première partie de l'étiquette en film (9, 9') se raccordant sur le pli d'extension (10) soit disposée sur l'un des côtés de la ligne d'extension (8) et qu'une autre partie se raccordant sur le pli d'extension soit disposée sur l'autre côté de la ligne d'affaiblissement,
    par pliage et par scellement, un boyau de film (22) posé à plat, avec une paroi frontale (2) et une paroi arrière (3) étant formé à partir de la bande de film (19), de sorte que les lignes d'affaiblissement (8) mutuellement associées soient disposées en étant superposées sur la paroi frontale (2) et sur la paroi arrière (3),
    et des sachets d'emballage en film (1) individuels étant sectionnés à partir du boyau en film (22).
  12. Procédé selon la revendication 11, dans la zone des lignes d'affaiblissement (8) un lé de film (20) étant alimenté en formant un pli d'extension (10) et des étiquettes en film (9, 9') individuelles étant sectionnées à partir du lé de film (20).
  13. Procédé selon la revendication 11 ou 12, lors de la fixation, les plis d'extension (11) des étiquettes en film (9, 9') étant chacun orientés à la perpendiculaire de la bande de film (19) puis posés à plat.
  14. Procédé selon l'une quelconque des revendications 11 à 13, avant la fixation des étiquettes en film (9, 9) une entaille (17) qui est voisine des lignes d'affaiblissement associées par paires étant ménagée dans la bande de film (19).
  15. Procédé selon l'une quelconque des revendications 11 à 14, lors de la formation du premier boyau en film (22), des plis latéraux (15a, 15b) insérés entre la paroi frontale (2) et la paroi arrière (3) étant créés.
  16. Procédé selon l'une quelconque des revendications 11 à 15, le boyau de film (22) étant muni sur ses bords de soudures de scellement longitudinales (14, 14').
  17. Procédé selon l'une quelconque des revendications 11 à 16, des sachets d'emballage en film (1) individuels ouverts sur une extrémité étant sectionnés à partir du boyau de film (22).
EP07819803A 2007-11-14 2007-11-14 Sachet d'emballage en film et procédé pour fabriquer un sachet d'emballage en film Not-in-force EP2212217B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/009846 WO2009062529A1 (fr) 2007-11-14 2007-11-14 Sachet d'emballage en film et procédé pour fabriquer un sachet d'emballage en film

Publications (2)

Publication Number Publication Date
EP2212217A1 EP2212217A1 (fr) 2010-08-04
EP2212217B1 true EP2212217B1 (fr) 2011-05-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07819803A Not-in-force EP2212217B1 (fr) 2007-11-14 2007-11-14 Sachet d'emballage en film et procédé pour fabriquer un sachet d'emballage en film

Country Status (3)

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EP (1) EP2212217B1 (fr)
AT (1) ATE509857T1 (fr)
WO (1) WO2009062529A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8806040U1 (de) * 1988-05-06 1988-06-23 Bischof Und Klein Gmbh & Co, 4540 Lengerich Verpackungsbehältnis aus flexiblem Material für schüttfähiges Füllgut
DE102006029119A1 (de) * 2006-06-22 2007-07-05 Nordenia Deutschland Halle Gmbh Werk Steinfeld Folienbeutel

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WO2009062529A1 (fr) 2009-05-22
ATE509857T1 (de) 2011-06-15
EP2212217A1 (fr) 2010-08-04

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