EP1472148B1 - Closure assembly in a bag - Google Patents

Closure assembly in a bag Download PDF

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Publication number
EP1472148B1
EP1472148B1 EP03737342A EP03737342A EP1472148B1 EP 1472148 B1 EP1472148 B1 EP 1472148B1 EP 03737342 A EP03737342 A EP 03737342A EP 03737342 A EP03737342 A EP 03737342A EP 1472148 B1 EP1472148 B1 EP 1472148B1
Authority
EP
European Patent Office
Prior art keywords
sheets
fixing
external
bag
sheet
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.)
Expired - Fee Related
Application number
EP03737342A
Other languages
German (de)
French (fr)
Other versions
EP1472148A2 (en
Inventor
Philippe Eggermont
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.)
S2F Flexico SARL
Original Assignee
S2F Flexico SARL
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Filing date
Publication date
Application filed by S2F Flexico SARL filed Critical S2F Flexico SARL
Publication of EP1472148A2 publication Critical patent/EP1472148A2/en
Application granted granted Critical
Publication of EP1472148B1 publication Critical patent/EP1472148B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2516—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener
    • B65D33/2525—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener located between the fastener and the product compartment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2584—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterized by the slider
    • B65D33/2587—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterized by the slider the slider being made out of a plurality of pieces
    • 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
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/813—Applying closures
    • B31B70/8131—Making bags having interengaging closure elements
    • B31B70/8132—Applying the closure elements in the machine direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1056—Perforating lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1304—Means making hole or aperture in part to be laminated

Definitions

  • the present invention relates to the field of packaging bags.
  • It relates in particular to the manufacture of sachets comprising closure assemblies, in particular closure assemblies of the tamper-proof type.
  • FIG. 1 shows an example of a known closure assembly 1. It comprises complementary profiles 2 for opening and closing the mouth 3 of a bag.
  • the complementary profiles 2 are advantageously open or closed thanks to a movable cursor 4.
  • FIG. 1 means ensuring the initial inviolability and an opening control function, consisting of a strip 5 which initially extends across the opening of the bag and which must be broken to access to the content of it.
  • the inviolable means 5 are known per se and allow a user to know if the bag containing a product has already been opened or not. Fastening webs 6 make it possible to fix the complementary profiles to the walls 7 of the bag.
  • the sails 6 are fastened during a welding process, during which the fastening webs pass between welding jaws 8.
  • the fastening webs must not be welded together, nor on the tamper-proof means.
  • the invention proposes to improve the system for fixing the sails on the sides of the bag.
  • closure assemblies whose inviolable means do not consist of a web with a line of weakness.
  • the invention proposes a closure assembly as defined by claim 1.
  • the invention as claimed also relates to the bags comprising the closure assemblies according to the invention, the methods and the machines for manufacturing the closure assemblies and the bags comprising these sets.
  • the present invention relates to the automatic manufacture on machine resealable bag closure assemblies, these bags comprising a closure assembly with fastening webs for forming tamperproof means.
  • the present invention can be applied both to the machines for the automatic manufacture of horizontal scrolling bags and to machines for automatic production of vertical scrolling bags.
  • the present invention applies equally to machines for the automatic manufacture of sachets with filling during a step subsequent to manufacture and possibly separated geographically from the place of manufacture, to manufacturing machines, filling and closing - of the type "FORM, FILL and SEAL" (FFS) according to the English terminology generally used - in a single place and during successive stages.
  • FORM, FILL and SEAL FFS
  • the present invention is preferably applied and advantageously to machines of the type FFS vertical scrolling.
  • FIG. 2 schematically shows a closure assembly 1 according to the invention.
  • the complementary profiles 2 are advantageously opened or closed by means of a movable cursor 4.
  • the assembly may however have no cursor.
  • the complementary closure profiles 2 are advantageously of the male / female type. However, other types of complementary profiles can be envisaged.
  • Fastening webs 6a and 6b support the profiles 2 and allow to attach them to the walls of a bag.
  • a line of weakness or precut 10 parallel to the profiles is practiced on one of the sails 6a.
  • the precut 10 extends substantially in the middle of the veil 6a. It thus divides the web 6a into two parts: a first outermost part 61a with respect to the bag and a second innermost part 62a.
  • the second web 6b "external part” will be referred to as the part 61b and "internal part” the part 62b.
  • welding strip encompasses all the possibilities of attaching a fastening web to a wall of a bag, such as, for example, thermal welding, in particular “hotmelt” type welding, but also collages.
  • the outer face of the outer portion 61a of the web 6a is covered with a welding strip 11.
  • the strip 11 is adapted to fix the web 6a on the inner face of a wall of a bag.
  • the inner face of the portion 61a is, however, devoid of welding strip. It is the same of the inner face of the part 61b. Thus, the inner faces of the parts 61a and 61b can not be welded together. According to one variant, the material of the fastening webs is such that the inner faces do not adhere to one another during a welding process. The same result can be obtained by a surface treatment method known to those skilled in the art.
  • the inner face of the portion 62b is covered with a welding strip 12, which faces the portion 62a which is covered or not with a welding strip.
  • the portion 62a has no strip, which saves welding equipment and perform relatively clean welds.
  • the welding strip can be fixed on the portion 62a, and not on 62b.
  • Figures 6 and 7 differ from Figure 2 only by the place of the welding strip on the inner part of the webs 6a and 6b.
  • the parts 62a and 62b can be welded together when the closure assembly passes between welding shoes.
  • the purpose of such welding is to form a tamper-proof element, which acts as a first-opening witness.
  • the outer face of the web 6b is covered with a welding band 13 adapted to ensure the attachment of the web 6b on the inner face of a bag.
  • FIG 3 schematically shows the upper part of a bag 20 having at its mouth 3 a closure assembly 1 according to the invention.
  • the sails 6a and 6b are fixed during a welding or gluing process, during which the sails 6a and 6b pass between jaws 8 for welding or gluing.
  • the outer faces of the webs 6a and 6b are fixed on the inner faces of the walls 7 of the resealable bag 20.
  • the thermal welding process welds together the internal faces of the parts 62a and 62b.
  • the assembly 1 thus constitutes a closure of the tamper-proof type, the weld 12 being hermetic.
  • This tamperproof closure can be opened by a user thanks to the precut 10.
  • FIG. 4 schematically represents the operation of the opening after the first opening of the tamper evident, that is to say after cutting the pre-cut 10.
  • the user After opening the sections 2 by the slider 4, the user exerts sufficient force on the sails 6a and 6b to break the line of weakness or the precut 10. After the rupture of the line of weakness or precut 10 , the portion 62a remains welded to the web 6b, the portion 61a remains welded to the wall of the bag 20.
  • the arrow 21 schematically shows that the user can access the interior of the bag 20.
  • the user can open or close the profiles 2 as he sees fit.
  • the invention also relates to the manufacture of assemblies 1. According to this manufacturing method, complementary profiles 2 are welded to fastening webs 6a and 6b. The fastening webs 6a and 6b can also be extruded integrally on the profiles.
  • a precut or a line of weakness 10 is made in one of the attachment webs, which is referred to as 6a for clarity of description.
  • Welding strips are then applied to the webs 6a and 6b.
  • the welding strips on the outer faces of the webs extend over the outer part of the web 6a with respect to the precut or line of weakness 10 and over the entire face for the web 6b.
  • the welding strips on the inner faces of the webs extend over the inner part of the sail (s) 6a and / or 6b with respect to the precut or line of weakness 10.
  • the inner faces of the outer parts with respect to the precut 10 do not have a welding band.
  • only an inner portion comprises a welding strip.
  • the complementary profiles advantageously comprise a movable cursor for opening / closing assistance.
  • the slider can be metal or plastic.
  • the walls of the bags may be of any material such as plastics, cardboard, or paper.
  • the invention also relates to a method of fixing closure assemblies on the mouths of reclosable bags.
  • the closing assembly is scrolled at the mouth of a bag, which is formed by means known in themselves, the scrolling being carried out between welding shoes.
  • the welding shoes allow the welding strips to attach to the walls of the bag and to weld the inner parts of the fastening webs together.
  • the welding of the fastening webs on the inner faces of the walls of the bags can be done simultaneously on both walls, or we can weld a first web, perform different operations, such as filling the bag for example, and then solder the second web.
  • the machines for manufacturing the closure assemblies comprise means capable of applying the welding strips to the appropriate faces of the fastening webs. They also include means adapted to practice a line of weakness or a precut on one of the attachment webs.
  • the fastening machines closure assemblies on the mouth of the bags comprise means adapted to scroll the closure assemblies at the mouth of the bags, and between means able to weld the fasteners on the walls. These means may include welding shoes.
  • the scrolling means may be longitudinal scrolling means or transverse scrolling means.
  • the machines Before the closure, the machines comprise bag forming means known in themselves.
  • the filling of the bag with the product can be carried out on the site of manufacture of the bag. It can for example be performed before fixing the closure assembly.
  • the filling can be performed by the interior space between the fastening webs.
  • These means may comprise for example means which are interposed between the internal parts of the fastening webs during the welding step.
  • the formation of the tamperproof portion will be by welding parts 62a and 62b after filling the bag.
  • the filling of the bag can be carried out according to other variants.
  • the filling can be carried out from the outside, namely between a wall of a bag and a fixing web.
  • the filling can also be carried out by the end of the bag opposite the mouth where the closure assembly is fixed.
  • the fastening machine may comprise means for performing welds of the "hotmelt" type. It may also include gluing jaws.
  • the above description does not presuppose the position of the machine.
  • it may be a vertical or horizontal scroll and fastening of the closure assembly may be carried out longitudinally or transversely to the scroll of the packaging sheet.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)
  • Package Frames And Binding Bands (AREA)
  • Slide Fasteners (AREA)

Abstract

The invention relates to a closure assembly (1) comprising complementary closure sections (2) and panels (6a, 6b) for fixing said closure assembly to the internal faces of a bag. The inventive assembly is characterised in that it comprises: sealing bands (11, 13) which are disposed on the external faces of the fixing panels (6a, 6b); a precut or line of weakness (10) which is made in one of the fixing panels (6a) and which divides said panel (6a) into a first external part (61a) and a second internal part (62a), the sealing band on the panel being limited to the external part of same; and a sealing band (12) which is disposed on the internal face of at least one of the panels, each internal sealing band being disposed on the internal part of the fixing panels.

Description

La présente invention concerne le domaine des sachets d'emballage.The present invention relates to the field of packaging bags.

Elle concerne notamment la fabrication des sachets comportant des ensembles de fermeture, en particulier des ensembles de fermeture du type inviolable.It relates in particular to the manufacture of sachets comprising closure assemblies, in particular closure assemblies of the tamper-proof type.

De nombreux sachets d'emballage et de nombreux systèmes pour la fabrication de ceux-ci ont déjà été proposés, et notamment pour la fixation sur les sachets des ensembles de fermeture comportant des moyens inviolables.Many packaging bags and many systems for the manufacture of these have already been proposed, and in particular for fixing on the bags closure assemblies comprising tamper-proof means.

On a représenté à la figure 1 un exemple d'ensemble de fermeture 1 connu. Il comporte des profilés complémentaires 2 permettant l'ouverture et la fermeture de l'embouchure 3 d'un sachet. Les profilés complémentaires 2 sont avantageusement ouverts ou fermés grâce à un curseur mobile 4.FIG. 1 shows an example of a known closure assembly 1. It comprises complementary profiles 2 for opening and closing the mouth 3 of a bag. The complementary profiles 2 are advantageously open or closed thanks to a movable cursor 4.

On aperçoit également sur la figure 1, des moyens assurant l'inviolabilité initiale et une fonction de témoin d'ouverture, constitués d'une bande 5 qui s'étend initialement en travers de l'ouverture du sachet et qui doit être rompue pour accéder au contenu de celui-ci.Also shown in Figure 1, means ensuring the initial inviolability and an opening control function, consisting of a strip 5 which initially extends across the opening of the bag and which must be broken to access to the content of it.

Les moyens inviolables 5 sont connus en eux-mêmes et permettent à un utilisateur de savoir si le sachet contenant un produit a déjà été ouvert ou non. Des voiles de fixation 6 permettent de fixer les profilés complémentaires aux parois 7 du sachet.The inviolable means 5 are known per se and allow a user to know if the bag containing a product has already been opened or not. Fastening webs 6 make it possible to fix the complementary profiles to the walls 7 of the bag.

La fixation des voiles 6 s'effectue lors d'un procédé de soudage, au cours duquel les voiles de fixation passent entre des mâchoires 8 de soudage.The sails 6 are fastened during a welding process, during which the fastening webs pass between welding jaws 8.

La fixation des voiles sur l'embouchure du sachet ne s'avère pas totalement satisfaisante, bien que de nombreuses recherches aient été conduites dans ce domaine très particulier.The fixing of the sails on the mouth of the bag is not entirely satisfactory, although much research has been conducted in this very particular field.

En particulier, les voiles de fixation ne doivent pas être soudés entre eux, ni sur les moyens inviolables.In particular, the fastening webs must not be welded together, nor on the tamper-proof means.

On doit ainsi prévoir une partie intercalaire 9 entre les faces intérieures des voiles, qui permet de positionner correctement les moyens inviolables 5 ou éviter la soudure des voiles 6 ensemble.It is thus necessary to provide an intermediate part 9 between the inner faces of the sails, which makes it possible to correctly position the tamperproof means 5 or to prevent the sails 6 from welding together.

Des exemples de tels sacs connus sont décrits et illustrés dans le documents FR 2 778 362 .Examples of such known bags are described and illustrated in the documents FR 2,778,362 .

PRESENTATION DE L'INVENTIONPRESENTATION OF THE INVENTION

L'invention propose d'améliorer le système de fixation des voiles sur les faces du sachet.The invention proposes to improve the system for fixing the sails on the sides of the bag.

Elle propose notamment en outre des ensembles de fermeture dont les moyens inviolables ne sont pas constitués d'un voile comportant une ligne de faiblesse.
A cet effet l'invention propose un ensemble de fermeture tel que défini par la revendication 1.In particular, it proposes closure assemblies whose inviolable means do not consist of a web with a line of weakness.
For this purpose the invention proposes a closure assembly as defined by claim 1.

L'invention est avantageusement complétée par les caractéristiques suivantes prises seules ou en une quelconque de leur combinaison techniquement possible :

  • la bande extérieure de soudage du voile ne comportant pas la prédécoupe s'étend sur toute la largeur du voile ;
  • la bande extérieure de soudage du voile ne comportant pas la prédécoupe s'étend uniquement sur la partie externe du voile ;
  • les profilés de fermeture sont complémentaires du type mâle/femelle ;
  • les profilés de fermeture comportent un curseur mobile.
The invention is advantageously completed by the following characteristics taken alone or in any of their technically possible combination:
  • the outer web of welding of the web not including the pre-cut extends over the entire width of the web;
  • the outer web welding the web without the precut extends only on the outer part of the web;
  • the closure profiles are complementary to the male / female type;
  • the closure profiles comprise a movable cursor.

L'invention telle que revendiquée concerne également les sachets comportant les ensembles de fermeture selon l'invention, les procédés et les machines de fabrication des ensembles de fermeture et des sachets comportant ces ensembles.The invention as claimed also relates to the bags comprising the closure assemblies according to the invention, the methods and the machines for manufacturing the closure assemblies and the bags comprising these sets.

PRESENTATION DES FIGURESPRESENTATION OF FIGURES

D'autres caractéristiques, buts et avantages de l'invention ressortiront de la description qui suit qui est illustrative et non limitative et qui doit être lue en regard des dessins annexés sur lesquels :

  • la figure 1, déjà commentée, représente schématiquement un sac selon l'art antérieur comportant un ensemble de fermeture avec un voile inviolable comportant une ligne de faiblesse ;
  • la figure 2 représente schématiquement en ensemble de fermeture selon l'invention ;
  • la figure 3 représente schématiquement un ensemble de fermeture en place sur l'embouchure d'un sachet plastique ;
  • la figure 4 représente un ensemble de fermeture selon l'invention dont l'élément inviolable a été ouvert ;
  • la figure 5 représente un mode de réalisation où un sachet d'emballage est rempli après la fixation de l'élément de fermeture ;
  • la figure 6 représente un ensemble de fermeture dont la bande de fixation est sur le voile opposé par rapport au mode de réalisation représenté à la figure 2 ; et
  • la figure 7 représente un ensemble de fermeture combinant les modes de réalisation des figures 2 et 6.
Other features, objects and advantages of the invention will emerge from the description which follows, which is illustrative and nonlimiting, and which should be read with reference to the appended drawings in which:
  • Figure 1, already commented, schematically shows a bag according to the prior art comprising a closure assembly with an inviolable veil having a line of weakness;
  • FIG. 2 schematically represents a closure assembly according to the invention;
  • Figure 3 schematically shows a closure assembly in place on the mouth of a plastic bag;
  • Figure 4 shows a closure assembly according to the invention, the tamperproof element has been opened;
  • Fig. 5 shows an embodiment where a packaging bag is filled after fastening of the closure member;
  • FIG. 6 represents a closure assembly whose fixing strip is on the opposite web with respect to the embodiment represented in FIG. 2; and
  • Figure 7 shows a closure assembly combining the embodiments of Figures 2 and 6.

DESCRIPTION DETAILLEEDETAILED DESCRIPTION

Comme on l'a indiqué précédemment la présente invention concerne la fabrication sur machine automatique d'ensembles de fermeture de sachets refermables, ces sachets comportant un ensemble de fermeture avec des voiles de fixation permettant de former des moyens inviolables.As previously mentioned, the present invention relates to the automatic manufacture on machine resealable bag closure assemblies, these bags comprising a closure assembly with fastening webs for forming tamperproof means.

La présente invention peut s'appliquer aussi bien aux machines de fabrication automatique de sachets à défilement horizontal qu'aux machines à fabrication automatique de sachets à défilement vertical.The present invention can be applied both to the machines for the automatic manufacture of horizontal scrolling bags and to machines for automatic production of vertical scrolling bags.

Par ailleurs, la présente invention s'applique aussi bien aux machines de fabrication automatique de sachets avec remplissage au cours d'une étape ultérieure à la fabrication et éventuellement séparée géographiquement du lieu de fabrication, qu'aux machines de fabrication, au remplissage et fermeture - du type « FORM, FILL and SEAL » (FFS) selon la terminologie anglo-saxonne généralement utilisée - en un lieu unique et au cours d'étapes successives.Furthermore, the present invention applies equally to machines for the automatic manufacture of sachets with filling during a step subsequent to manufacture and possibly separated geographically from the place of manufacture, to manufacturing machines, filling and closing - of the type "FORM, FILL and SEAL" (FFS) according to the English terminology generally used - in a single place and during successive stages.

Ainsi la présente invention s'applique de préférence et avantageusement à des machines du type FFS à défilement vertical.Thus the present invention is preferably applied and advantageously to machines of the type FFS vertical scrolling.

On a représenté schématiquement sur la figure 2 un ensemble de fermeture 1 selon l'invention.FIG. 2 schematically shows a closure assembly 1 according to the invention.

Il comporte des profilés complémentaires 2 permettant l'ouverture et la fermeture de l'embouchure d'un sachet.It comprises complementary profiles 2 for opening and closing the mouth of a bag.

Les profilés 2 complémentaires sont avantageusement ouverts ou fermés grâce à un curseur mobile 4. L'ensemble peut cependant ne pas comporter de curseur.The complementary profiles 2 are advantageously opened or closed by means of a movable cursor 4. The assembly may however have no cursor.

Les profilés 2 complémentaires de fermeture sont avantageusement du type mâle/femelle. On peut cependant envisager d'autres types de profilés complémentaires.The complementary closure profiles 2 are advantageously of the male / female type. However, other types of complementary profiles can be envisaged.

Des voiles de fixation 6a et 6b supportent les profilés 2 et permettent de les fixer aux parois d'un sachet.Fastening webs 6a and 6b support the profiles 2 and allow to attach them to the walls of a bag.

Une ligne de faiblesse ou une prédécoupe 10 parallèle aux profilés est pratiquée sur l'un des voiles 6a. La prédécoupe 10 s'étend sensiblement au milieu du voile 6a. Elle partage ainsi le voile 6a en deux parties : une première partie la plus externe 61a par rapport au sachet et une deuxième partie la plus interne 62a.A line of weakness or precut 10 parallel to the profiles is practiced on one of the sails 6a. The precut 10 extends substantially in the middle of the veil 6a. It thus divides the web 6a into two parts: a first outermost part 61a with respect to the bag and a second innermost part 62a.

Par analogie, dans le cadre de la présente demande, on appellera pour le second voile 6b « partie externe » la partie 61b et « partie interne » la partie 62b.By analogy, in the context of the present application, the second web 6b "external part" will be referred to as the part 61b and "internal part" the part 62b.

Dans la présente description, l'expression « bande de soudage » englobe toutes les possibilités de fixation d'un voile de fixation sur une paroi d'un sachet, comme par exemple le soudage thermique, notamment soudage du type « hotmelt », mais également des collages.In the present description, the expression "welding strip" encompasses all the possibilities of attaching a fastening web to a wall of a bag, such as, for example, thermal welding, in particular "hotmelt" type welding, but also collages.

La face extérieure de la partie externe 61a du voile 6a est recouverte d'une bande de soudage 11. La bande 11 est apte à fixer le voile 6a sur la face intérieure d'une paroi d'un sachet.The outer face of the outer portion 61a of the web 6a is covered with a welding strip 11. The strip 11 is adapted to fix the web 6a on the inner face of a wall of a bag.

La face intérieure de la partie 61a est par contre dépourvue de bande de soudage. Il en est de même de la face intérieure de la partie 61b. Ainsi, les faces intérieures des parties 61a et 61b ne peuvent pas être soudées ensemble. Selon une variante, la matière des voiles de fixation est telle que les faces intérieures n'adhèrent pas entre elles lors d'un procédé de soudage. On peut obtenir le même résultat grâce à un procédé de traitement de surface connu de l'homme de métier.The inner face of the portion 61a is, however, devoid of welding strip. It is the same of the inner face of the part 61b. Thus, the inner faces of the parts 61a and 61b can not be welded together. According to one variant, the material of the fastening webs is such that the inner faces do not adhere to one another during a welding process. The same result can be obtained by a surface treatment method known to those skilled in the art.

La face intérieure de la partie 62b est recouverte d'une bande de soudage 12, qui fait face à la partie 62a qui est recouverte ou non d'une bande de soudage. Avantageusement, la partie 62a ne comporte pas de bande, ce qui permet d'économiser du matériel de soudure et d'effectuer des soudures relativement propres. Bien entendu, la bande de soudage peut être fixé sur la partie 62a, et non pas sur 62b. Les figures 6 et 7 ne diffèrent de la figure 2 que par la place de la bande de soudage sur la partie interne des voiles 6a et 6b.The inner face of the portion 62b is covered with a welding strip 12, which faces the portion 62a which is covered or not with a welding strip. Advantageously, the portion 62a has no strip, which saves welding equipment and perform relatively clean welds. Of course, the welding strip can be fixed on the portion 62a, and not on 62b. Figures 6 and 7 differ from Figure 2 only by the place of the welding strip on the inner part of the webs 6a and 6b.

Ainsi, les parties 62a et 62b peuvent être soudées entre elles lors du passage de l'ensemble de fermeture entre des sabots de soudage.Thus, the parts 62a and 62b can be welded together when the closure assembly passes between welding shoes.

Le but d'un tel soudage est de former un élément de type inviolable, qui joue le rôle de témoin de première ouverture.The purpose of such welding is to form a tamper-proof element, which acts as a first-opening witness.

La face extérieure du voile 6b est recouverte d'une bande de soudage 13 apte à assurer la fixation du voile 6b sur la face intérieure d'un sac. -The outer face of the web 6b is covered with a welding band 13 adapted to ensure the attachment of the web 6b on the inner face of a bag. -

La figure 3 représente schématiquement la partie supérieure d'un sachet 20 comportant au niveau de son embouchure 3 un ensemble 1 de fermeture selon l'invention. La fixation des voiles 6a et 6b s'effectue lors d'un procédé de soudage ou de collage, au cours duquel les voiles 6a et 6b passent entre des mâchoires 8 de soudage ou de collage.Figure 3 schematically shows the upper part of a bag 20 having at its mouth 3 a closure assembly 1 according to the invention. The sails 6a and 6b are fixed during a welding or gluing process, during which the sails 6a and 6b pass between jaws 8 for welding or gluing.

Après le soudage, les faces extérieures des voiles 6a et 6b, sont fixées sur les faces intérieures des parois 7 du sachet refermable 20. De la même façon, le procédé thermique de soudage soude ensemble les faces internes des parties 62a et 62b. L'ensemble 1 constitue donc une fermeture du type inviolable, la soudure 12 étant hermétique.After welding, the outer faces of the webs 6a and 6b are fixed on the inner faces of the walls 7 of the resealable bag 20. In the same manner, the thermal welding process welds together the internal faces of the parts 62a and 62b. The assembly 1 thus constitutes a closure of the tamper-proof type, the weld 12 being hermetic.

Cette fermeture inviolable peut être ouverte par une utilisateur grâce à la prédécoupe 10.This tamperproof closure can be opened by a user thanks to the precut 10.

La figure 4 représente schématiquement le fonctionnement de l'ouverture après la première ouverture de l'inviolable, c'est-à-dire après la découpe de la prédécoupe 10.FIG. 4 schematically represents the operation of the opening after the first opening of the tamper evident, that is to say after cutting the pre-cut 10.

Après l'ouverture des profilés 2 grâce au curseur 4, l'utilisateur exerce une force suffisante sur les voiles 6a et 6b afin de rompre la ligne de faiblesse ou la prédécoupe 10. Après la rupture de la ligne de faiblesse ou de la prédécoupe 10, la partie 62a reste soudée au voile 6b, la partie 61 a reste soudée à la paroi du sachet 20.After opening the sections 2 by the slider 4, the user exerts sufficient force on the sails 6a and 6b to break the line of weakness or the precut 10. After the rupture of the line of weakness or precut 10 , the portion 62a remains welded to the web 6b, the portion 61a remains welded to the wall of the bag 20.

La flèche 21 montre schématiquement que l'utilisateur peut avoir accès à l'intérieur du sachet 20. L'utilisateur peut donc ouvrir ou fermer les profilés 2 comme il l'entend.The arrow 21 schematically shows that the user can access the interior of the bag 20. The user can open or close the profiles 2 as he sees fit.

L'invention concerne également la fabrication des ensembles 1. Selon ce procédé de fabrication, on soude des profilés complémentaires 2 sur des voiles de fixation 6a et 6b. Les voiles de fixation 6a et 6b peuvent également être venus d'extrusions venues de matière sur les profilés.The invention also relates to the manufacture of assemblies 1. According to this manufacturing method, complementary profiles 2 are welded to fastening webs 6a and 6b. The fastening webs 6a and 6b can also be extruded integrally on the profiles.

On pratique une prédécoupe ou on ménage une ligne de faiblesse 10 dans un des voiles de fixation, qu'on référence par 6a pour la clarté de la description.A precut or a line of weakness 10 is made in one of the attachment webs, which is referred to as 6a for clarity of description.

On applique ensuite des bandes de soudage sur les voiles 6a et 6b.Welding strips are then applied to the webs 6a and 6b.

Les bandes de soudage sur les faces extérieures des voiles s'étendent sur la partie externe du voile 6a par rapport à la prédécoupe ou ligne de faiblesse 10 et sur toute la face pour le voile 6b.The welding strips on the outer faces of the webs extend over the outer part of the web 6a with respect to the precut or line of weakness 10 and over the entire face for the web 6b.

Les bandes de soudage sur les faces intérieures des voiles s'étendent sur la partie interne du ou des voile(s) 6a et/ou 6b par rapport à la prédécoupe ou ligne de faiblesse 10. Les faces intérieures des parties externes par rapport à la prédécoupe 10 ne comportent pas de bande de soudage. Avantageusement, seule une partie interne comporte une bande de soudage.The welding strips on the inner faces of the webs extend over the inner part of the sail (s) 6a and / or 6b with respect to the precut or line of weakness 10. The inner faces of the outer parts with respect to the precut 10 do not have a welding band. Advantageously, only an inner portion comprises a welding strip.

Les profilés complémentaires comportent avantageusement un curseur mobile pour l'aide à l'ouverture/fermeture. Le curseur peut être en métal ou en plastique.The complementary profiles advantageously comprise a movable cursor for opening / closing assistance. The slider can be metal or plastic.

Les parois du sachets peuvent être dans une matière quelconque tel que matière plastique, carton, ou papier.The walls of the bags may be of any material such as plastics, cardboard, or paper.

L'invention concerne également un procédé de fixation des ensembles de fermeture sur les embouchures de sachets refermables.The invention also relates to a method of fixing closure assemblies on the mouths of reclosable bags.

Selon ce procédé, on fait défiler l'ensemble de fermeture au niveau de l'embouchure d'un sachet, qui est formé par des moyens connus en eux-mêmes, le défilement s'effectuant entre des sabots de soudage. Les sabots de soudage permettent aux bandes de soudage de se fixer sur les parois du sachet et de souder les parties internes des voiles de fixation entre elles.According to this method, the closing assembly is scrolled at the mouth of a bag, which is formed by means known in themselves, the scrolling being carried out between welding shoes. The welding shoes allow the welding strips to attach to the walls of the bag and to weld the inner parts of the fastening webs together.

Le soudage des voiles de fixation sur les faces intérieures des parois du sachets peut se faire simultanément sur les deux parois, ou on peut souder un premier voile, effectuer différentes opérations, comme le remplissage du sachet par exemple, puis souder le deuxième voile.The welding of the fastening webs on the inner faces of the walls of the bags can be done simultaneously on both walls, or we can weld a first web, perform different operations, such as filling the bag for example, and then solder the second web.

Les machines de fabrication des ensembles de fermeture comportent des moyens aptes à appliquer les bandes de soudage sur les faces adéquates des voiles de fixation. Elles comportent également des moyens aptes à pratiquer une ligne de faiblesse ou une prédécoupe sur l'un des voiles de fixation.The machines for manufacturing the closure assemblies comprise means capable of applying the welding strips to the appropriate faces of the fastening webs. They also include means adapted to practice a line of weakness or a precut on one of the attachment webs.

Les machines de fixation des ensembles de fermeture sur l'embouchure des sachets comportent des moyens aptes à faire défiler les ensembles de fermeture au niveau de l'embouchure des sachets, et ce entre des moyens aptes à souder les ensembles de fixation sur les parois. Ces moyens peuvent notamment comporter des sabots de soudage. Les moyens de défilement peuvent être des moyens de défilement longitudinal ou des moyens de défilement transversal.The fastening machines closure assemblies on the mouth of the bags comprise means adapted to scroll the closure assemblies at the mouth of the bags, and between means able to weld the fasteners on the walls. These means may include welding shoes. The scrolling means may be longitudinal scrolling means or transverse scrolling means.

En amont de la fermeture, les machines comportent des moyens de formation du sac connus en eux-mêmes.Before the closure, the machines comprise bag forming means known in themselves.

Le remplissage du sac par le produit peut être effectué sur le site de fabrication du sachet. Il peut par exemple être effectué avant la fixation de l'ensemble de fermeture.The filling of the bag with the product can be carried out on the site of manufacture of the bag. It can for example be performed before fixing the closure assembly.

Dans le cas où le remplissage est effectué après la fixation de l'ensemble sur l'embouchure du sachet sur un même site ou sur un autre site, ultérieurement, on peut prévoir alors des moyens permettant le soudage des ensembles de fixation sur les parois du sac sans la formation de la fermeture inviolable.In the case where the filling is carried out after the assembly of the assembly on the mouth of the bag on the same site or on another site, later, it is possible to provide means for welding the fastening assemblies on the walls of the container. bag without the formation of the tamper-proof closure.

Ainsi le remplissage peut s'effectuer par l'espace intérieur entre les voiles de fixation.Thus the filling can be performed by the interior space between the fastening webs.

Ces moyens peuvent comporter par exemple des moyens qui s'intercalent entre les parties internes des voiles de fixation lors de l'étape de soudage. Selon une variante représentée à la figure 5, on n'applique de bandes de soudage 11 et 13 que sur les faces extérieures des parties 61a et 61b. Ainsi, dans un premier temps, on ne soude que les parties externes. La formation de la partie inviolable se fera par soudage des parties 62a et 62b après le remplissage du sachet.These means may comprise for example means which are interposed between the internal parts of the fastening webs during the welding step. According to a variant shown in Figure 5, we only apply welding strips 11 and 13 on the outer faces of parts 61a and 61b. Thus, at first, only the external parts are welded. The formation of the tamperproof portion will be by welding parts 62a and 62b after filling the bag.

Le remplissage du sachet peut s'effectuer selon d'autres variantes. On pourra par exemple fixer un voile de fixation sur une face intérieure d'une des parois du sachet, l'élément inviolable étant déjà formé, effectuer le remplissage du sachet, puis fixer l'autre voile sur l'autre paroi.The filling of the bag can be carried out according to other variants. For example, it is possible to fix a fixing web on one inner face of one of the walls of the bag, the tamper-evident element being already formed, to fill the bag, and then to fix the other leaf on the other wall.

Ainsi le remplissage peut s'effectuer par l'extérieur, à savoir entre une paroi d'un sachet et un voile de fixation.Thus the filling can be carried out from the outside, namely between a wall of a bag and a fixing web.

Le remplissage peut également s'effectuer par l'extrémité du sachet opposée à l'embouchure où est fixé l'ensemble de fermeture.The filling can also be carried out by the end of the bag opposite the mouth where the closure assembly is fixed.

La machine de fixation peut comporter des moyens permettant de réaliser des soudures du type « hotmelt ». Elle peut également comporter des mâchoires de collage.The fastening machine may comprise means for performing welds of the "hotmelt" type. It may also include gluing jaws.

On rappelle que la description qui précède ne présuppose en rien de la position de la machine. Par exemple, il peut s'agir d'un défilement vertical ou horizontal et que la fixation de l'ensemble de fermeture peut s'effectuer longitudinalement ou transversalement au défilement de la feuille d'emballage.It is recalled that the above description does not presuppose the position of the machine. For example, it may be a vertical or horizontal scroll and fastening of the closure assembly may be carried out longitudinally or transversely to the scroll of the packaging sheet.

Claims (19)

  1. A closure assembly (1) comprising complementary closure profiles (2) and sheets (6a, 6b) for fixing the closure assembly to the internal faces of a bag, characterised in that it comprises:
    - welding strips (11, 13) on the external faces of the fixing sheets (6a, 6b);
    - a scoring or weakness line (10) formed in one of the fixing sheets (6a), the said scoring or weakness line delimiting the said fixing sheet (6a) in a first external part (61a) and a second internal part (62a), the external welding strip provided on the sheet being limited to the external part thereof;
    - a welding strip (12) on the internal part of at least one of the sheets to weld the sheets together, the said internal welding strip being situated on the said internal part of the pre-cut or scored fixing sheet and/or on the portion of the other sheet facing said internal part.
  2. An assembly according to claim 1, characterised in that the external welding strip of the sheet (6b) not comprising the scoring extends over the entire width of the sheet.
  3. An assembly according to one of claims 1 or 2, characterised in that the external welding strip of the sheet (6b) not comprising the scoring extends solely over the external part (61b) of the sheet (6b).
  4. An assembly according to one of claims 1 to 3, characterised in that the closure profiles (2) are complementary, of the male/female type.
  5. An assembly according to one of claims 1 to 4, characterised in that the closure profiles (2) comprise a movable slider (4).
  6. A reclosable bag (20) comprising a body folding on itself and a mouth to which the closure assembly is fixed according to claim 1.
  7. A bag according to claim 6, characterised in that the external welding strip of the sheet (6b) not comprising the scoring extends over the entire width of the sheet.
  8. A bag according to one of claims 6 or 7, characterised in that the external welding strip of the sheet (6b) not comprising the scoring extends solely over the external part (61b) of the sheet (6b).
  9. A bag according to one of claims 6 to 8, characterised in that the closure profiles (2) are complementary, of the male/female type.
  10. A bag according to one of claims 6 to 9, characterised in that the closure profiles (2) comprise a movable slider (4).
  11. A method of manufacturing a closure assembly comprising complementary closure profiles (2), and sheets (6a, 6b) for fixing the closure assembly to the internal faces of the walls (7) of the bag, according to which:
    - a scoring or weakness line (10) is formed in one of the fixing sheets (6a), the said scoring or weakness line delimiting the said fixing sheet (6a) in a first external part (61a) and a second internal part (62a);
    - welding strips (11, 13) are applied to the external walls of the fixing sheets (6a, 6b), the external welding strip provided on the sheet comprising the weakness line or scoring being limited to the external part thereof;
    - welding strips (12) are applied to the internal wall of at least one of the strips in the internal part of the pre-cut or scored fixing sheets.
  12. A method according to claim 11, characterised in that it also comprises the step according to which a movable opening/closing slider is fixed to the complementary closure profiles (2).
  13. A method of manufacturing a reclosable bag according to which a closure assembly (1) comprising complementary closure profiles and sheets for fixing the closure assembly to the bag are fixed, characterised in that it comprises the steps according to which:
    - two walls (7) delimiting a mouth (3) are formed;
    - welding strips (11, 13) are welded to the external faces of the fixing sheets on the internal faces of the walls (7) of the bag level with the mouth, one of the sheets comprising a scoring or weakness line able to rupture at the time of first opening, the external weld provided on the said sheet being limited to the external part thereof;
    - the bag (20) is filled with a product;
    - the internal faces of the sheets (6a, 6b) are welded together by means of a welding strip (12) present on at least one of the sheets, the said welding strip internal to the sheets being situated on the internal part of the pre-cut or scored fixing sheets and/or on the portion of the other sheet facing said internal part.
  14. A method according to claim 13, characterised in that the filling of the bag is carried out before the fixing of the closure assembly.
  15. A method according to one of claims 13 or 14, characterised in that it comprises a step according to which a movable opening/closing slider (4) is fixed to the complementary closure profiles (2).
  16. A method according to one of claims 13 to 15, characterised in that the welding of the welding strips is of the "hot melt" welding type.
  17. A machine for manufacturing a closure assembly (1) comprising complementary closure profiles (2), and sheets (6a, 6b) for fixing the closure assembly to the internal faces of the walls of the bag (20), characterised in that it comprises:
    - means able to produce, in one of the fixing sheets, a weakness line or a scoring (10), the said weakness line or scoring delimiting the said fixing sheet in a first external part and a second internal part;
    - means able to apply welding strips (11, 13) to the external walls of the fixing sheets, the external welding strip provided on the pre-cut or scored sheet being limited to the external part thereof;
    - means able to apply a welding strip (12) to the internal wall of at least one of the sheets and in the internal part of the pre-cut or scored fixing sheets.
  18. A machine for manufacturing a reclosable bag (20) comprising means of fixing a closure assembly (1) comprising complementary closure profiles (2) and sheets (6a, 6b) for fixing the closure assembly to the bag, characterised in that it comprises:
    - means able to form two walls delimiting a mouth (3);
    - means able to weld welding strips (11, 13) situated on the external faces of the fixing sheets on the internal faces of the walls (7) at the level of the mouth, one of the sheets comprising a scoring or weakness line able to rupture at the time of the first opening, the external weld provided on the sheet being limited to the external part thereof;
    - means able to fill the bag with a product;
    - means able to weld together the internal faces of the sheets by means of a welding strip present on at least one of the sheets, the said welding strip internal to the sheets being situated on the internal part of the pre-cut or scored fixing sheets and/or on the portion of the other sheet facing said internal part.
  19. A machine according to claim 18, characterised in that it comprises means able to effect a welding of the "hot melt" welding type.
EP03737342A 2002-02-08 2003-02-06 Closure assembly in a bag Expired - Fee Related EP1472148B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0201555 2002-02-08
FR0201555A FR2835810B1 (en) 2002-02-08 2002-02-08 CLOSURE ASSEMBLY IN A BAG
PCT/FR2003/000373 WO2003066459A2 (en) 2002-02-08 2003-02-06 Closure assembly in a bag

Publications (2)

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EP1472148A2 EP1472148A2 (en) 2004-11-03
EP1472148B1 true EP1472148B1 (en) 2007-07-18

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Application Number Title Priority Date Filing Date
EP03737342A Expired - Fee Related EP1472148B1 (en) 2002-02-08 2003-02-06 Closure assembly in a bag

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US (1) US20050078891A1 (en)
EP (1) EP1472148B1 (en)
JP (1) JP4255837B2 (en)
CN (1) CN1328126C (en)
AU (1) AU2003226863A1 (en)
BR (1) BR0303028A (en)
CA (1) CA2475260A1 (en)
DE (1) DE60314983T2 (en)
DK (1) DK1472148T3 (en)
FR (1) FR2835810B1 (en)
MX (1) MXPA04007712A (en)
WO (1) WO2003066459A2 (en)

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JP2017013886A (en) * 2015-07-06 2017-01-19 凸版印刷株式会社 Pouch and content sealing pouch
CN109732996B (en) * 2018-12-29 2020-08-28 重庆鼎盛印务股份有限公司 Production process of leisure snack packaging bag

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Also Published As

Publication number Publication date
CN1328126C (en) 2007-07-25
MXPA04007712A (en) 2004-11-10
WO2003066459A3 (en) 2004-03-25
EP1472148A2 (en) 2004-11-03
FR2835810A1 (en) 2003-08-15
FR2835810B1 (en) 2004-04-23
JP2005516860A (en) 2005-06-09
DE60314983D1 (en) 2007-08-30
DK1472148T3 (en) 2007-11-12
CA2475260A1 (en) 2003-08-14
DE60314983T2 (en) 2008-04-03
BR0303028A (en) 2004-06-15
JP4255837B2 (en) 2009-04-15
CN1642816A (en) 2005-07-20
US20050078891A1 (en) 2005-04-14
AU2003226863A1 (en) 2003-09-02
WO2003066459A2 (en) 2003-08-14
WO2003066459A8 (en) 2004-05-06

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