EP2263949B1 - Sachet à soufflets latéraux en plastique et son procédé de fabrication - Google Patents

Sachet à soufflets latéraux en plastique et son procédé de fabrication Download PDF

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Publication number
EP2263949B1
EP2263949B1 EP20090008043 EP09008043A EP2263949B1 EP 2263949 B1 EP2263949 B1 EP 2263949B1 EP 20090008043 EP20090008043 EP 20090008043 EP 09008043 A EP09008043 A EP 09008043A EP 2263949 B1 EP2263949 B1 EP 2263949B1
Authority
EP
European Patent Office
Prior art keywords
bag
hook
fold
loop fastener
fastener sections
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
EP20090008043
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German (de)
English (en)
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EP2263949A1 (fr
Inventor
Jens Dipl.-Ing. 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
Application filed by Mondi Halle GmbH filed Critical Mondi Halle GmbH
Priority to EP20090008043 priority Critical patent/EP2263949B1/fr
Priority to ES09008043T priority patent/ES2414083T3/es
Publication of EP2263949A1 publication Critical patent/EP2263949A1/fr
Application granted granted Critical
Publication of EP2263949B1 publication Critical patent/EP2263949B1/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
    • B65D75/5816—Opening or contents-removing devices added or incorporated during package manufacture for tearing a corner or other small portion next to the edge, e.g. a U-shaped portion
    • 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
    • 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 gusseted bag made of plastic film, which is closable after a bag filling at its upper edge of the bag by means of a top seal to a package closed on all sides, with a front wall and a rear wall, V-shaped inserted gussets, which are connected at longitudinal edges with the front wall and the rear wall, and a reclosure, the bag inside arranged on a gusset and adjacent inner bag surfaces of the front wall and the rear wall, and is designed as a Velcro fastener, wherein, to open the package, a bag section above the reclosure is separable along an opening line, and wherein the gusset terminates above the opening line.
  • the invention relates to a flat gusseted bag which is provided as a prefabricated product for subsequent bag filling.
  • gusseted bags which are shaped, filled and closed indirectly, are also included.
  • the plastic film may consist of a monofilm, a co-extrusion film or a multilayer composite film.
  • the plastic film is multi-layered and has a printable outer layer and a sealable inner layer on the inside of the bag.
  • the front wall, the rear wall and the V-shaped inserted gussets can be formed by folding a film tube or by folding a flat sheet of material.
  • the Longitudinal edges are designed here as folding edges and can be reinforced by longitudinal sealing seams.
  • the opening line can be used as a weakening line, z. B.
  • a weakening line in the form of a perforation, be formed.
  • a weakening line can also be generated by a laser.
  • the term "opening line” also includes simple markings in the form of a cutting line along which the packaging can be opened with scissors or a knife.
  • a bag package of a gusseted bag with the aforementioned features is made WO 2004/092025 A2 known.
  • the reclosure consists of a closure strip that extends horizontally without interruption from the front wall of the gusseted bag over the inner surface of a gusset to the back wall.
  • a bag section including a part of the side fold along a line of weakness can be separated.
  • the weakening line has a horizontal and a vertical section. This form complicates the handling, since the pulling direction must be changed when separating the bag section. After the separation of the bag section remains above the reclosure an opening between the rear wall and the front wall, which can not be closed. The function of reclosure is thereby impaired.
  • the reclosure function can be improved by connecting the rear wall and the front wall together by an additional sealing seam extending from the upper edge of the bag to the rear end of the reclosure.
  • this additional sealing seam obstructs the inflow of the filling material to the pouring opening.
  • the DE 201 06 175 U1 describes a side gusseted bag with Velcro strips which are arranged on the inside of the front wall and the rear wall of the bag and extend over the entire bag width. Additional Velcro strips may be provided on the inner surfaces of the gussets. As a result, a maximum resealable opening at the head of the bag is created. For high fill weight packaging, metered product removal is difficult.
  • the FR 2 816 597 A1 discloses various embodiments of pouches having at its head end or in the area of a gusset equipped with a Velcro strips Med.
  • the Velcro strip of the reclosure has a uniformly shaped and adhering to itself adhesive surface of mutually engageable in engagement locking members.
  • the WO 2008/145164 A1 relates to a gusseted bag with the features described above and the features of the preamble of the independent claims 1 and 18.
  • the reclosure is composed of four Velcro portions arranged inside the bag on the front wall, the rear wall and both edges of the gusset.
  • the hook-and-loop fastener sections fastened to the front wall and the rear wall are arranged in an upper bag corner and form a re-closure in the region of the inserted side fold with the hook-and-loop fastener sections arranged on the adjacent flank of the side fold.
  • the velcro strip forming Velcro strips are arranged horizontally and extends the opening line to Opening the bag package substantially horizontally to the reclosure.
  • the gusset can be pulled out and used as a chute for pouring the contents.
  • the length of the chute is determined by the width of the gusset.
  • the upper boundary of the chute tilts down due to the interaction of the film surfaces. The result is a chute of limited bulk length, which is angled downwards. The function of the chute is not yet fully satisfactory.
  • the invention has for its object to provide a gusseted bag for a bag packaging, which has a resealable pouring opening in a gusset, which forms a far projecting chute with auspicious Ausgesßeigenschaften when pulling out the gusset.
  • the pouch packaging should be easy to open and characterized by good reclosing properties.
  • the object of the invention and solution of the problem is a gusseted bag according to claim 1.
  • Velcro portions are arranged in an upper bag corner and extend diagonally from the side fold delimiting the longitudinal edges to a provided for the top seal seam surface on the upper edge of the bag, wherein in the region of the inserted gusset reclosure with the form the adjacent edge of the side gusset Velcro sections.
  • the hook-and-loop fastener sections extend beyond the gusset area into the bag area between the inlaid gussets and form a reclosure between the front wall and the back wall, thereby providing a closure particularly large filling opening can be achieved.
  • the Velcro sections have a wide adhesive surface, which is characterized by a good adhesion.
  • the reclosure is easy and practical to handle. Due to the fact that the hook-and-loop closure sections extend from the longitudinal folds delimiting the side fold to the top seal seam of the packaging, an effective reclosure of the entire filling opening is ensured after the pouch packaging has been opened for the first time.
  • the bag packaging can also be opened very easily by separating a bag corner above the reclosure. In the simplest case, the bag corner can be separated parallel to the reclosure with a knife or a pair of scissors or demolished along a line of weakness.
  • the gusset ends above the opening line and preferably extends to the upper edge of the bag.
  • the inserted side fold is cut obliquely. Thereafter, the gusset can be pulled out as a chute, wherein the cut or severing line forms the upper edge of the chute. Characterized in that the inserted gusset has been cut obliquely, the upper edge of the gusset is longer than the width of the gusset and results in a chute, which protrudes far in the extended state and is characterized by good Ausgesßeigenticianen.
  • the Velcro sections are preferably each formed by a separate Velcro strips, so that the reclosure has four separate Velcro strips.
  • the velcro portions arranged on the front wall and the rear wall and the longitudinal edges of the gusseted bag underneath the reclosure enclose an angle between 120 ° and 150 °. Preferably this angle is 135 °, so that the Velcro strips are at an angle of 45 ° to the upper edge of the bag.
  • a first embodiment of the teaching according to the invention provides that two hook-and-loop closure sections of the reclosure have an adhesive surface with hook elements and two hook-and-loop closure sections an adhesive surface with loops.
  • the differently formed Velcro portions are alternately arranged on the inner surfaces of the front wall, the rear wall and the surfaces of the side folds that always an adhesive surface with hook elements and an adhesive surface with loops facing each other.
  • Velcro closure sections are used for the reclosure, which have a uniformly shaped and self-adhering adhesive surface of mutually engageable snap-in locking members.
  • the adhesive surface of the hook-and-loop fastener sections expediently has a width of between 3 mm and 15 mm, regardless of their specific configuration. With increasing width of the adhesive surface, the reclosure can be handled more easily.
  • the opening line in the form of a mark for opening the package by means of scissors or in the form of a line of weakness for tearing off a bag section is arranged in the bag corner above the reclosure and extends in the simplest case on the front wall and the rear wall parallel to the hook and loop fastener sections.
  • An alternative embodiment provides that the opening line arranged in the bag corner above the reclosure at the longitudinal edge of the bag has a greater distance from the adjacent hook-and-loop fastener sections than at the upper edge of the bag.
  • Such an embodiment causes the unfolded Sciere protrudes at a shallower angle and the delivery of goods more over the top of the chute is done. At the same time, there is less danger of the contents falling out laterally in the region of the longitudinal edges.
  • the course of the opening line between the connection areas on the longitudinal edges of the side fold and the upper edge of the bag can be designed as desired.
  • the opening line can be formed as a straight line, which converges with the Velcro closure sections arranged below the opening line from the upper edge of the bag or, for example, have an arcuate profile.
  • the plastic film from which the gusseted bag is made in particular, consists of a multilayer composite film having a printable outer surface and a sealable inner surface.
  • the opening line consists of a line of weakness, which only cuts through a bag outer side cover layer of the multilayer plastic film.
  • the opening line may also consist of a perforation, which passes through the front wall, the sides of the gusset and the rear wall as a continuous perforation.
  • a peelable connection is preferably provided below the opening line, which extends from the side edges delimiting the longitudinal edges to the upper edge of the bag and connects adjacent inner surfaces of the side gusseted bag. The peelable connection allows an airtight completion of the Gregutraums until the first opening of the bag packaging and consists for example of a peel seal or a cold-sealing lacquer.
  • the longitudinal edges of the side-fold pouch are preferably reinforced by longitudinal sealing seams.
  • the Velcro strip ends in front of the longitudinal sealing seams.
  • the reclosures are made of four hook and loop fastener sections, which are fastened mirror-symmetrically next to each other on the film web in a W-shaped arrangement.
  • Velcro strips are preferably used and aligned accordingly.
  • a single, in its form exactly adapted Velcro strip which already has a W-shape with mutually angled sections.
  • the hook-and-loop fastener sections have a self-adhering adhesive surface, can also first straight Velcro strip before attachment to the film web provided at its edges with incisions and then placed by angling at the incisions in a W-shape.
  • the two outer hook-and-loop fastener sections of the W-shaped arrangement have a greater length than the two inner Velcro fastener sections.
  • the hook-and-loop fastener sections are each positioned on the film web at an angle of between 30 ° and 60 °, preferably at an angle of 45 °, relative to the web longitudinal direction, and thermally fixed to the film web by sealing or by an adhesive bond.
  • the mutually associated ends of the Velcro portions are expediently arranged at a distance from one another in the use of four separate Velcro strip, which is formed so that folds of the film portion associated with the rebates fold edges are formed, which pass undisturbed between the spaced apart ends of the Velcro strips.
  • the distance between the facing ends of the outer Velcro strip and the inside adjacent Velcro strip corresponds to at least twice the width of a longitudinal edge reinforcing longitudinal seam.
  • the Fig. 1 and 2 show a made of a plastic film, lying flat side gusseted bag, which is closable after a bag filling at its upper edge of the bag by means of a top seal to a package closed on all sides.
  • the gusseted bag has a front wall 1 and a rear wall 1 ', V-shaped inserted gussets 2, 2', which are connected to longitudinal edges 3 with the front wall and the rear wall, and a reclosure 4. At its lower end, the gusseted bag is closed by a transverse sealing seam 5.
  • the reclosure 4 is on upper end of the gusseted bag bag inside arranged on a gusset 2 and adjacent bag inner surfaces of the front wall 1 and the rear wall 1 'and formed as a hook and loop fastener.
  • a bag section 6 above the reclosure 4 along an opening line 7 can be separated.
  • the side fold 2 provided with the reclosure 4 ends above the opening line 7.
  • the reclosure 4 is composed of four separate Velcro strips 8, 9, the bag inside the front wall 1, the rear wall 1 'and both edges of the side fold 2 are arranged.
  • the attached to the front wall 1 and the rear wall 1 'Velcro portions 8 are arranged in an upper bag corner and extend diagonally from the longitudinal edges 3 to a head seam provided for the surface 10 at the upper edge of the bag, wherein they reclosure in the area of the inserted gusset 2 form with the arranged on the adjacent edge of the gusset 2 Velcro 9 and where they extend beyond the gusset area out into the bag area between the inserted gussets and form a reclosure between the front wall 1 and the rear wall 1 '.
  • the on the front wall 1 and the rear wall 1 'arranged Velcro 8 and the longitudinal edges 3 of the side gusseted bag below the reclosure 4 include an angle ⁇ between 120 ° and 150 °. Preferably, this angle is 135 °, so that the hook and loop fastener sections 8 adjoin the front wall 1 and the rear wall 1 'at an angle ⁇ of 45 ° to the upper edge of the bag.
  • the front wall 1, the rear wall 1 'and the V-shaped inserted gussets 2, 2' are formed by folding a flat film web.
  • the hook and loop fastener sections 8, 9 are not integrated into the longitudinal sealing seams 23 but end at a slight distance from them.
  • the opening line 7 is arranged in the bag corner above the reclosure 4 and extends on the front wall 1 and the rear wall 1 'parallel to the hook and loop fastener sections 8.
  • a portion 6 of the upper bag corner along the opening line 7 including a part of the gusset 2 is separated. Thereafter, the gusset 2 is accessible from the outside and can be pulled out of the bag. It forms an outwardly projecting chute 13, as in Fig. 4 is shown.
  • the hook-and-loop fastener sections 8, 9 of the reclosure 4 have a uniformly designed adhesive surface which adheres to itself and which can be brought into mutual engagement from one another by latching elements.
  • the adhesive surface of the Velcro portions 8, 9 is preferably 3 mm to 15 mm wide.
  • the opening line 7 extends to the front wall 1 and the rear wall 1 'parallel to the hook and loop fastener sections 8, the opening line 7 in Fig. 6a and 6b at the longitudinal edges 3 a greater distance from the hook-and-loop fastener sections 8 than at the top closed by the top seal seam bag edge.
  • the opening line 7 may be an arcuate Profile or converge with the below arranged hook-and-loop fastener sections 8 to the upper bag edge.
  • the opening line 7 consists in the illustrated embodiments of a perforation, the front wall 1, the edges of the gusset 2 and the rear wall 1 'passes through as a continuous perforation.
  • a peelable connection 14 is provided which extends from the longitudinal edges 3 to the surface 10 provided for the head seam 11 at the upper edge of the bag and connects adjacent inner surfaces of the gusseted bag.
  • the opening line 7 can also consist of a weakening line, which merely cuts through a covering outer layer of the multilayer plastic film on the outside of the bag.
  • Fig. 7 schematically illustrated method are applied to a flat film web 15 elements for reclosures 4.
  • the double-layer material web 16 is closed by attaching at least one longitudinal sealing seam 17 to a flat side gusseted tube 18.
  • further sealing seams 19 finally becomes a Bag chain 20 formed to be separated from the gusseted bag by means of a separating cut.
  • the reclosures 4 are each made of four Velcro portions 8, 9, which are mounted in a W-shaped arrangement mirror-symmetrically side by side on the film web 15, wherein the two outer Velcro portions 8 of the W-shaped arrangement have a greater length than
  • the two Velcro closure portions 9 inside the Velcro portions 8, 9 are each at an angle ⁇ between 30 ° and 60 °, preferably at an angle ⁇ of 45 °, based on the web longitudinal direction, positioned on the film web 15 and thermally by sealing or by an adhesive bond is connected to the film web 15.
  • Fig. 7 one takes also that they are designed as separate Velcro strips, wherein the Velcro portions 8, 9 mutually associated ends of the Velcro strips at a distance a 1 , a 2 are arranged to each other.
  • the distance a 1 . a 2 between the ends of the Velcro strips is selected so that fold lines 21, 22 are formed during folding of the reclosures 4 associated film portion, which pass undisturbed between the spaced apart ends of the Velcro strip.
  • the distance a 1 at the mutually facing ends of the outer Velcro strip and the inside adjacent Velcro strip corresponds to at least twice the width of the longitudinal edges 3 reinforcing longitudinal sealing seam 23rd

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Claims (22)

  1. Sachet à plis latéraux en un film en matière plastique, qui après un remplissage du sachet, peut se refermer sur son bord supérieur de sachet au moyen d'un joint de scellement supérieur en un emballage fermé de toutes parts, avec
    une paroi frontale (1), ainsi qu'une paroi arrière (1'),
    des plis latéraux (2, 2') insérés en forme de V, qui sur des arêtes longitudinales (3) sont reliés à la paroi frontale (1) et à la paroi arrière (1') et
    une refermeture (4), qui sur la face intérieure du sachet est disposée sur un pli latéral (2) et sur des surfaces intérieures au sachet adjacentes à la paroi frontale (1) et à la paroi arrière (1') et qui est conçue en tant que fermeture autoagrippante,
    pour l'ouverture de l'emballage, une section de sachet (6) au-dessus de la refermeture (4) étant sectionnable le long d'une ligne d'ouverture (7),
    le pli latéral (2) se terminant au-dessus de la ligne d'ouverture (7),
    la refermeture (4) se composant de quatre sections de fermeture autoagrippante (8, 9), qui sur la face intérieure du sachet sont disposées sur la paroi frontale (1), la paroi arrière (1') ainsi que sur les deux flancs du pli latéral (2) et
    les sections de fermeture autoagrippante (8) fixées sur la paroi frontale (1) ainsi que sur la paroi arrière (1') étant disposées dans un coin supérieur du sachet et dans la zone du pli latéral (2) inséré et formant une refermeture avec les sections de fermeture autoagrippante (9) disposées sur le flanc voisin du pli latéral (2), caractérisé en ce que les sections de fermeture autoagrippante (8, 9) s'étendent à la diagonale des arêtes longitudinales (3) délimitant le pli latéral (2), jusqu'à une surface (10) prévue pour le joint de scellement supérieur (11) sur le bord supérieur du sachet.
  2. Sachet à plis latéraux selon la revendication 1, caractérisé en ce que les sections de fermeture autoagrippante (8, 9) sont formées chacune par un ruban séparé de fermeture autoagrippante.
  3. Sachet à plis latéraux selon la revendication 1 ou la revendication 2, caractérisé en ce que les sections de fermeture autoagrippante (8) fixées sur la paroi frontale (1) ainsi que sur la paroi arrière (1') s'étendent au-delà de la zone du pli latéral, jusque dans la zone de sachet entre les plis latéraux (2, 2') insérés et forment à cet endroit une refermeture entre la paroi frontale (1) et la paroi arrière (1').
  4. Sachet à plis latéraux selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les plis latéraux (2, 2') s'étendent jusqu'au bord supérieur du sachet.
  5. Sachet à plis latéraux selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les sections de fermeture autoagrippante (8) disposées sur la paroi frontale (1) et sur la paroi arrière (1') et les arêtes longitudinales (3) du sachet à plis latéraux forment sous la refermeture (4) un angle (α) compris entre 120° et 150°.
  6. Sachet à plis latéraux selon la revendication 5, caractérisé en ce que l'angle a entre les sections de fermeture autoagrippante (8) et les arêtes longitudinales (3) du pli latéral (2) en-dessous de la refermeture est de 135°.
  7. Sachet à plis latéraux selon l'une quelconque des revendications 1 à 6, caractérisé en ce que deux sections de fermeture autoagrippante de la refermeture (4) comportent une surface adhérente avec des éléments en crochets et deux sections de fermeture autoagrippante comportent une surface adhérente avec des boucles et en ce que les sections de fermeture autoagrippante de conception différente sont disposées en alternance sur les surfaces intérieures de la paroi frontale (1), de la paroi arrière (1') et des flancs du pli latéral (2) de telle sorte que chaque fois une surface adhérente avec des éléments à crochets et une surface adhérente avec des boucles se fassent face.
  8. Sachet à plis latéraux selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les sections de fermeture autoagrippante (8, 9) de la refermeture comportent une surface adhérente de conception uniforme et adhérente sur elle-même d'organes d'enclenchement pouvant être amenés réciproquement en engagement par accrochage.
  9. Sachet à plis latéraux selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les sections de fermeture autoagrippante (8, 9) comportent une surface adhérente d'une largeur de 3 mm à 15 mm.
  10. Sachet à plis latéraux selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la ligne d'ouverture (7) dans le coin du sachet est disposée au-dessus de la refermeture (4) et s'étend sur la paroi frontale (1) et sur la paroi arrière (1') à la parallèle des sections de fermeture autoagrippante (8).
  11. Sachet à plis latéraux selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la ligne d'ouverture (7) disposée dans le coin du sachet, au-dessus de la refermeture (4) présente sur les arêtes longitudinales (3) du sachet un écart supérieur par rapport aux sections de fermeture autoagrippante (8) à celui du bord supérieur du sachet.
  12. Sachet à plis latéraux selon la revendication 11, caractérisé en ce que la ligne d'ouverture (7) et la section de fermeture autoagrippante (8) disposée en-dessous de la ligne d'ouverture (7) convergent vers le bord supérieur du sachet.
  13. Sachet à plis latéraux selon la revendication 11, caractérisé en ce que la ligne d'ouverture (7) présente un profil de forme cintrée.
  14. Sachet à plis latéraux selon l'une quelconque des revendications 1 à 13, caractérisé en ce que la ligne d'ouverture (7) consiste dans une ligne d'affaiblissement qui sectionne uniquement une couche de couverture extérieure au sachet du film multicouches en matière plastique.
  15. Sachet à plis latéraux selon l'une quelconque des revendications 1 à 13, caractérisé en ce que la ligne d'ouverture (7) consiste dans une perforation, qui en tant que ligne de perforation permanente, traverse la paroi frontale (1), les flancs du pli latéral (2) et la paroi arrière (1').
  16. Sachet à plis latéraux selon l'une quelconque des revendications 1 à 15, caractérisé en ce qu'en-dessous de la ligne d'ouverture (7) est prévue une liaison (14) pelable, qui s'étend des arêtes longitudinales (3) jusqu'à la surface (10) prévue pour le joint de scellement supérieur (11) sur le bord supérieur du sachet et qui relie des surfaces voisines du sachet à plis latéraux.
  17. Sachet à plis latéraux selon l'une quelconque des revendications 1 à 16, caractérisé en ce que les arêtes longitudinales (3) sont renforcées par des joints de scellement longitudinaux (23) et en ce que les sections de fermeture (8, 9) se terminent avant les joints de scellement longitudinaux (23).
  18. Procédé de fabrication de sachets à plis latéraux selon l'une quelconque des revendications 1 à 17,
    lors duquel on applique sur une bande en film (15) des éléments pour des refermetures (4),
    lors duquel, par pliage de la bande en film (15), on forme ensuite des plis latéraux et on crée un bande de matière bicouches avec des plis latéraux (2, 2') insérés,
    lors duquel, on ferme la bande de matière bicouches par application d'au moins un joint de scellement longitudinal (17) en un tube à plis latéraux (18) posé à plat et
    lors duquel, par application de joints de scellement (19) supplémentaires, on forme une chaîne de sachets (20) à partir de laquelle on sectionne des sachets à plis latéraux au moyen d'une coupe de sectionnement,
    caractérisé en ce qu'on fabrique les refermetures (4) à partir de chaque fois quatre sections de fermeture autoagrippante (8, 9) que l'on fixe en un agencement en forme de W, côte à côte, en symétrie spéculaire sur la bande en film (15), de telle sorte que les sections de fermeture autoagrippante (8, 9) du sachet s'étendent à la diagonale des arêtes longitudinales (3) délimitant le pli latéral (2) vers une surface (10) prévue pour le joint de scellement supérieur (11) sur le bord supérieur du sachet.
  19. Procédé selon la revendication 18, caractérisé en ce que les deux sections extérieures de fermeture autoagrippante (8) de l'agencement en forme de W présentent une longueur supérieure à celle des deux sections intérieures de fermeture autoagrippante (9).
  20. Procédé selon la revendication 18 ou la revendication 19, caractérisé en ce qu'on positionne les sections de fermeture autoagrippante (8, 9) sur la bande en film, chaque fois sous un angle compris entre 30° et 60°, de préférence sous un angle de 45°, par rapport à la direction longitudinale de la bande.
  21. Procédé selon l'une quelconque des revendications 18 à 20, caractérisé en ce qu'on dispose les extrémités mutuellement associées des sections de fermeture autoagrippante (8, 9) à un écart mutuel (a1, a2) et en ce que lors du pliage de la section de film associée aux refermetures (4), on forme des arêtes de pliage (21, 22) qui s'écoulent sans obstacle entre les extrémités écartées des sections de fermeture autoagrippante (8, 9).
  22. Procédé selon la revendication 21, caractérisé en ce que l'écart (a1) entre les extrémités qui se font face des sections extérieures de fermeture autoagrippante (8) et des sections de fermeture autoagrippante (9) disposées sur la face intérieure correspond au moins au double de la largeur d'un joint de scellement longitudinal (23) renforçant l'arête longitudinale.
EP20090008043 2009-06-19 2009-06-19 Sachet à soufflets latéraux en plastique et son procédé de fabrication Not-in-force EP2263949B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20090008043 EP2263949B1 (fr) 2009-06-19 2009-06-19 Sachet à soufflets latéraux en plastique et son procédé de fabrication
ES09008043T ES2414083T3 (es) 2009-06-19 2009-06-19 Bolsa de pliegues laterales de lámina de plástico y procedimiento para su fabricación

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20090008043 EP2263949B1 (fr) 2009-06-19 2009-06-19 Sachet à soufflets latéraux en plastique et son procédé de fabrication

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EP2263949A1 EP2263949A1 (fr) 2010-12-22
EP2263949B1 true EP2263949B1 (fr) 2013-03-20

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US11459157B2 (en) 2012-02-13 2022-10-04 Polytex Fibers Llc Woven plastic bags with features that reduce leakage, breakage and infestations
US9845184B2 (en) 2012-02-13 2017-12-19 Polytex Fibers Corporation Easy open plastic bags
US9669981B2 (en) 2012-02-13 2017-06-06 Polytex Fibers Corporation Easy open plastic bags
US10562689B2 (en) 2012-02-13 2020-02-18 Polytex Fibers Corporation Woven plastic bags with features that reduce leakage, breakage and infestations
US12234076B2 (en) 2012-02-13 2025-02-25 Polytex Fibers Llc Peelable easy open plastic bags
US10661963B2 (en) 2014-04-04 2020-05-26 Polytex Fibers Corporation Peelable easy open plastic bags
US9731868B2 (en) 2012-10-12 2017-08-15 Polytex Fibers Corporation Polymeric bags with easy access features attached to the bags without adhesives
WO2014116568A1 (fr) * 2013-01-22 2014-07-31 Polytex Fibers Corporation Sacs en plastique non tissés à accès facile
US11472622B2 (en) 2014-04-04 2022-10-18 Polytex Fibers Llc Woven plastic bags with features that reduce leakage, breakage, and infestations
WO2015154014A1 (fr) 2014-04-04 2015-10-08 Polytex Fibers Corporation Sacs plastique tissés dotés de caractéristiques permettant la réduction de toute fuite, rupture et infestation
US11305927B2 (en) 2014-04-04 2022-04-19 Polytex Fibers Llc Easy open plastic bags
US12589932B2 (en) 2014-04-04 2026-03-31 Polytex Fibers Llc Woven plastic bags with features that reduce leakage, breakage and infestations

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US6206571B1 (en) * 1999-06-24 2001-03-27 Alan D. Olin Flexible bag with resealable pour spout
FR2816597B1 (fr) 2000-11-15 2003-06-13 Autobar Flexible France Sac d'emballage
DE20106175U1 (de) 2001-04-07 2002-08-14 Bischof und Klein GmbH & Co. KG, 49525 Lengerich Seitenfaltenbeutel oder -sack aus flexiblem schweißbarem Material
US6971794B2 (en) 2003-04-15 2005-12-06 Innoflex Incorporated Package having reclosable pour spout and method of forming same
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EP2263949A1 (fr) 2010-12-22

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