EP2505510A1 - Plastic package bag - Google Patents

Plastic package bag Download PDF

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Publication number
EP2505510A1
EP2505510A1 EP12305329A EP12305329A EP2505510A1 EP 2505510 A1 EP2505510 A1 EP 2505510A1 EP 12305329 A EP12305329 A EP 12305329A EP 12305329 A EP12305329 A EP 12305329A EP 2505510 A1 EP2505510 A1 EP 2505510A1
Authority
EP
European Patent Office
Prior art keywords
bag
folded
fixed
opening
bag according
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.)
Withdrawn
Application number
EP12305329A
Other languages
German (de)
French (fr)
Inventor
Patrick Alaux
Eric Valette
Franz Dewulf
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.)
Coveris Flexibles France SA
Original Assignee
Britton Flexibles France SA
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 Britton Flexibles France SA filed Critical Britton Flexibles France SA
Publication of EP2505510A1 publication Critical patent/EP2505510A1/en
Withdrawn legal-status Critical Current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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/24—End- or aperture-closing arrangements or devices using self-locking integral or attached closure elements, e.g. flaps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • 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
    • B65D75/5855—Peelable seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2313/00—Connecting or fastening means
    • B65D2313/02—Connecting or fastening means of hook-and-loop type

Definitions

  • the invention relates to the technical sector of packaging in the form of plastic or plastic bags, intended to be filled with any products.
  • the invention finds an advantageous application in the case of a packaging bag intended to receive animal feed in the form, for example, of kibbles, granules, etc.
  • this type of packaging has a bottom from which are formed, between two walls, the side edges. Most often, in order to increase the capacity of the bag, the lateral edges are shaped to act as bellows consisting of two folds connecting the two walls.
  • These bags can be made continuously from a single plastic film. For example, the film is subjected to successive bending operations to achieve the bellows between the two walls.
  • the various external plies, after conformation of the bag, are generally assembled by welding operations.
  • the bottom of the bag can be made continuously by welding then folded down and attached to one of the walls of the bag. After filling, the upper edge of the bag is generally formed by a weld line.
  • an opening equipped with complementary coupling means is formed at the upper part of the walls of the bag.
  • the bottom of the bag is made continuously by welding and then folded down and fixed on one of the walls of said bag.
  • an extra thickness resulting from the folding action can sometimes affect the stability of the bag, especially when a certain amount of product has been used. Indeed, the weight is no longer sufficient to ensure such stability.
  • the problem to be solved by the invention is not only to be able to easily pour the contents of a bag from a wide opening but also to improve the stability of the bag after use, that is to say after having paid a certain quantity of products.
  • the invention finds an advantageous application in the case of a plastic packaging bag having a bottom and parallel side edges shaped to act as bellows consisting of two folds connecting two walls, the upper edge of the bag being closed, after filling, by a weld line, while the bottom is made by welding and then folded to be folded and fixed on one of the walls
  • the folded bottom portion is fixed by complementary means of temporary coupling, said bottom having, substantially in its middle part, arrangements capable of creating a discharge opening after returning the bag and uncoupled the folded part, so that the upper edge becomes the bottom following said reversal.
  • the temporary coupling complementary means are constituted by self-gripping elements hermaphrodite type. At least one element is fixed on the inner face of the folded bottom portion and facing at least one other element fixed on the wall.
  • two elements are fixed on the inner face of the folded bottom portion, near the bellows, each of said elements being arranged facing an element attached to the wall near the bellows.
  • the arrangements capable of creating the discharge opening consist of a temporary fixing zone of the two walls of the folded bottom part, the length of said zone corresponding to the desired dimensional characteristics of said opening, the zone of Temporary fixation constitutes a zone of peelability to create the opening.
  • Another problem to be solved by the invention is to facilitate the flow of products between the bellows, avoiding them to be retained in the closed ends of the bellows.
  • the bag has, on both sides, arrangements capable of directing and channeling the products contained in said bag, in the direction of said opening, as and when the spill.
  • These arrangements consist of weld lines oriented towards the discharge opening at the end of the corresponding part of the bellows.
  • the temporary coupling means of the bottom part maintain, in the inverted position of the bag, said portion in the folded position corresponding to the closure of the discharge opening
  • the packaging bag designated by (1) is obtained by any known and appropriate means.
  • the bag (1) is obtained from a film made of flexible or semi-rigid subjected to different successive folding operations to achieve lateral bellows (la) and (1b) between two walls (1c) and (1d).
  • the bellows consist of two folds (A) and (B) connecting the two walls (1c) (1d).
  • the outer edges of the bellows at their connection with the walls of the bag are assembled by a weld line.
  • the bottom of the bag (the) can also be made continuously by welding and folded down and attached to a wall of the bag.
  • the upper edge of the bag (1f) after filling is closed by a sealed weld line.
  • the bottom portion folded (1e1) on the wall (1c) is fixed by complementary coupling means (2) and (3) constituted, for example, by self-gripping elements of the hermaphrodite type . At least one of these elements (3) is fixed on the inner face of the folded portion (1e1) of the bottom, and facing at least one other element (2) fixed on the wall (1c).
  • the two elements (2) and (3) are fixed on the internal face of the folded bottom part (1c) near the bellows, each of these elements being arranged opposite an element fixed on the wall also near the bellows. It therefore appears that in the position of cooperation of the elements (2) and (3), the bottom part (1e1) is fixed temporarily on the corresponding part of the wall of the bag ( figure 2 ).
  • the bottom is formed as is known from the prior art with the essential difference that the bottom part folded (the) is not fixed definitively but temporarily ( figure 6 ).
  • the weld line (S) constituting the bottom (1c) has substantially in its middle part arrangements capable of creating a discharge opening (O) after having returned the bag ( figure 3 ) and uncoupling the folded part (1e1) ( figure 4 ) so that the upper edge (1f) becomes the bottom following said reversal as shown by Figures 1 to 4 and 6 and 7 drawings.
  • the arrangements that present the weld line (S) to create the discharge opening (O) are constituted by a temporary fixing zone of the two walls of the folded bottom portion, at said weld line (S).
  • This temporary fixing zone constitutes a zone of peelability, being therefore able to be detached to create the opening from a joined and sealed position.
  • the bag has, on both sides of the discharge opening (O), arrangements capable of directing and channeling the products contained in the bag, towards said opening line as and when as the spill.
  • these arrangements consist of weld lines (S1) and (S2) oriented towards the opening (O) and formed at the corresponding end of the bellows (1a) and (1b).
  • the bag For the use of the bag in view of the spill of products, it is necessary to reverse the bag, so that the upper part (1f) will constitute the bottom while the bottom (the) will constitute the upper part from which is formed the opening spill ( figure 3 ). After reversing the bag, it is necessary to separate the bottom portion (1c) of the wall, which is perfectly possible with the complementary means of temporary coupling (2) and (3). In this position, the weld line (S) that has the folded bottom portion, is found at the upper end of the bag, so that by exerting a spreading force at the walls of the bag, under the effect of the zones of peelability, it is possible to create the opening (O). figures 5 and 8 ).
  • the bag In this position of use, the bag is perfectly stable in the storage position including after spilling a certain amount of products since it has no extra thickness.
  • the upper end of the bag can be folded from the rear wall (1d). Maintaining this folded position is ensured by the cooperation of temporary complementary coupling means (2c3). In this position, the opening (1g) is no longer in communication with the inside of the bag ( figure 9 ).
  • the bag (1) can be equipped with one or more handles to facilitate its gripping and transport, as well as for spilling products.
  • the upper portion of the bag may have an opening acting as a handle.

Abstract

The bag (1) has an upper edge (1f) closed by a sealed welding seam after filling the bag, and a bottom that is continuously formed by sealing. The bottom is folded and fixed to a wall of the bag. A folded bottom part is fixed with complementary temporary coupling units (2, 3) e.g. hermaphrodite type self-gripping elements. The bottom comprises a discharge opening forming arrangement in a median part. The arrangement forms a discharge opening after turning the bag and separating the folded bottom part, such that the upper edge forms the bottom after turning the bag.

Description

L'invention se rattache au secteur technique des emballages sous forme de sacs en matière synthétique ou plastique, destinés à être remplis de produits quelconques.The invention relates to the technical sector of packaging in the form of plastic or plastic bags, intended to be filled with any products.

A titre indicatif, nullement limitatif, l'invention trouve une application avantageuse dans le cas de sac d'emballages destinés à recevoir de la nourriture pour animaux sous forme, par exemple, de croquettes, granulés, ...By way of indication, in no way limiting, the invention finds an advantageous application in the case of a packaging bag intended to receive animal feed in the form, for example, of kibbles, granules, etc.

D'une manière connue, ce type d'emballage présente un fond à partir duquel sont formés, entre deux parois, les bords latéraux. Le plus souvent, afin d'augmenter les capacités du sac, les bords latéraux sont conformés pour faire office de soufflets constitués de deux plis reliant les deux parois. Ces sacs peuvent être réalisés en continu à partir d'un seul film en matière plastique. Par exemple, le film est soumis à des opérations de pliages successifs pour réaliser les soufflets entre les deux parois. Les différents plis externes, après conformation du sac, sont généralement assemblés par des opérations de soudure.In a known manner, this type of packaging has a bottom from which are formed, between two walls, the side edges. Most often, in order to increase the capacity of the bag, the lateral edges are shaped to act as bellows consisting of two folds connecting the two walls. These bags can be made continuously from a single plastic film. For example, the film is subjected to successive bending operations to achieve the bellows between the two walls. The various external plies, after conformation of the bag, are generally assembled by welding operations.

Le fond du sac peut être réalisé en continu par soudure puis rabattu et fixé sur l'une des parois du sac. Après remplissage, le bord supérieur du sac est formé généralement par une ligne de soudure.The bottom of the bag can be made continuously by welding then folded down and attached to one of the walls of the bag. After filling, the upper edge of the bag is generally formed by a weld line.

Différentes solutions techniques ont été proposées pour pouvoir assurer, l'ouverture du sac, afin d'avoir un libre accès à son contenu et pouvoir déverser les produits par ladite ouverture. Par exemple, une ouverture équipée de moyens complémentaires d'accouplement, est formée à la partie supérieure des parois du sac.Various technical solutions have been proposed to be able to ensure the opening of the bag, in order to have free access to its contents and to be able to pour the products through said opening. For example, an opening equipped with complementary coupling means is formed at the upper part of the walls of the bag.

Techniquement, cette solution donne satisfaction, mais augmente, d'une manière non négligeable, les coûts de production.Technically, this solution is satisfactory, but increases, in a significant way, production costs.

En outre, comme indiqué, le fond du sac est réalisé en continu par soudure puis rabattue et fixé sur l'une des parois dudit sac. Il en résulte, en position d'utilisation, une surépaisseur résultant de l'action de pliage. Or une telle surépaisseur peut parfois nuire à la stabilité du sac, notamment lorsqu'une certaine quantité de produit a été utilisé. En effet, le poids n'est plus suffisant pour assurer une telle stabilité.In addition, as indicated, the bottom of the bag is made continuously by welding and then folded down and fixed on one of the walls of said bag. As a result, in the use position, an extra thickness resulting from the folding action. However, such an excess thickness can sometimes affect the stability of the bag, especially when a certain amount of product has been used. Indeed, the weight is no longer sufficient to ensure such stability.

A partir de cet état de la technique, le problème que se propose de résoudre l'invention est non seulement de pouvoir verser facilement le contenu d'un sac à partir d'une ouverture de grande largeur mais également d'améliorer la stabilité du sac après utilisation c'est-à-dire après avoir versé une certaine quantité de produits.From this state of the art, the problem to be solved by the invention is not only to be able to easily pour the contents of a bag from a wide opening but also to improve the stability of the bag after use, that is to say after having paid a certain quantity of products.

L'invention trouve une application avantageuse dans le cas d'un sac d'emballage en matière plastique présentant un fond et des bords latéraux parallèles conformés pour faire office de soufflets constitués de deux plis reliant deux parois, le bord supérieur du sac étant fermé, après remplissage, par une ligne de soudure, tandis que le fond est réalisé par soudure puis rabattu pour être replié et fixé sur l'une des paroisThe invention finds an advantageous application in the case of a plastic packaging bag having a bottom and parallel side edges shaped to act as bellows consisting of two folds connecting two walls, the upper edge of the bag being closed, after filling, by a weld line, while the bottom is made by welding and then folded to be folded and fixed on one of the walls

Compte tenu du problème posé à résoudre, la partie de fond rabattue est fixée par des moyens complémentaires d'accouplement temporaire, ledit fond présentant, sensiblement dans sa partie médiane, des agencements aptes à créer une ouverture de déversement après avoir retourné le sac et désaccouplé la partie rabattue, de sorte que le bord supérieur devient le fond suite audit retournement.In view of the problem to be solved, the folded bottom portion is fixed by complementary means of temporary coupling, said bottom having, substantially in its middle part, arrangements capable of creating a discharge opening after returning the bag and uncoupled the folded part, so that the upper edge becomes the bottom following said reversal.

Pour résoudre le problème posé de pouvoir désolidariser la partie de fond rabattue après avoir retourné le sac en vue de son utilisation pour le déversement des produits, les moyens complémentaires d'accouplement temporaire sont constitués par des éléments auto-agrippants de type hermaphrodite. Au moins un élément est fixé sur la face interne de la partie de fond rabattue et en regard d'au moins un autre élément fixé sur la paroi.To solve the problem of being able to separate the folded bottom portion after returning the bag for use for the spill of the products, the temporary coupling complementary means are constituted by self-gripping elements hermaphrodite type. At least one element is fixed on the inner face of the folded bottom portion and facing at least one other element fixed on the wall.

Avantageusement, deux éléments sont fixés sur la face interne de la partie de fond rabattue, à proximité du soufflet, chacun desdits éléments étant disposés en regard d'un élément fixé sur la paroi à proximité des soufflets.Advantageously, two elements are fixed on the inner face of the folded bottom portion, near the bellows, each of said elements being arranged facing an element attached to the wall near the bellows.

Selon une autre caractéristique, les agencements aptes à créer l'ouverture de déversement sont constitués par une zone de fixation temporaire des deux parois de la partie de fond rabattue, la longueur de ladite zone correspondant aux caractéristiques dimensionnelles souhaitée de ladite ouverture, la zone de fixation temporaire constitue une zone de pelabilité pour créer l'ouverture.According to another characteristic, the arrangements capable of creating the discharge opening consist of a temporary fixing zone of the two walls of the folded bottom part, the length of said zone corresponding to the desired dimensional characteristics of said opening, the zone of Temporary fixation constitutes a zone of peelability to create the opening.

Un autre problème que se propose de résoudre l'invention est de faciliter l'écoulement des produits, entre les soufflets, en évitant à ces derniers d'être retenus dans les extrémités fermées des soufflets.Another problem to be solved by the invention is to facilitate the flow of products between the bellows, avoiding them to be retained in the closed ends of the bellows.

Pour résoudre un tel problème, le sac présente, de part et d'autre, des agencements aptes à diriger et canaliser les produits contenus dans ledit sac, en direction de ladite ouverture, au fur et à mesure du déversement. Ces agencements sont constitués par des lignes de soudures orientées en direction de l'ouverture de déversement, à l'extrémité de la partie correspondante des soufflets.To solve such a problem, the bag has, on both sides, arrangements capable of directing and channeling the products contained in said bag, in the direction of said opening, as and when the spill. These arrangements consist of weld lines oriented towards the discharge opening at the end of the corresponding part of the bellows.

Pour résoudre le problème posé de pouvoir assurer la fermeture du sac après utilisation, les moyens d'accouplement temporaire de la partie de fond maintiennent, en position renversée du sac, ladite partie en position repliée correspondant à l'obturation de l'ouverture de déversementTo solve the problem of being able to ensure the closure of the bag after use, the temporary coupling means of the bottom part maintain, in the inverted position of the bag, said portion in the folded position corresponding to the closure of the discharge opening

L'invention est exposée ci-après plus en détail à l'aide des figures des dessins annexés dans lesquels :

  • La figure 1 est une vue de face du sac avant formation du fond.
  • La figure 2 est une vue correspondant à la figure 1 après formation du sac.
  • la figure 3 est une vue correspondant à la figure 2 après retournement du sac
  • La figure 4 est une vue correspondant à la figure 3 après désaccouplement de la partie de fond rabattue.
  • La figure 5 est une vue correspondant à la figure 4 après pelabilité de la zone de soudure pour créer l'ouverture de déversement.
  • La figure 6 est une vue en perspective du sac en position de stockage et avant utilisation.
  • La figure 7 est une vue en perspective correspondant à la figure 6 après retournement du sac et désaccouplement de la partie de fond rabattue.
  • La figure 8 est une vue correspondant à la figure 7 montrant l'ouverture de la zone de pelabilité.
  • La figure 9 est une vue correspondant à la figure 8 après avoir rabattue la partie de fond correspondant à l'obturation de l'ouverture de déversement.
The invention is described below in more detail with reference to the figures of the accompanying drawings, in which:
  • The figure 1 is a front view of the bag before forming the bottom.
  • The figure 2 is a view corresponding to the figure 1 after bag formation.
  • the figure 3 is a view corresponding to the figure 2 after reversing the bag
  • The figure 4 is a view corresponding to the figure 3 after uncoupling the folded bottom portion.
  • The figure 5 is a view corresponding to the figure 4 after peelability of the weld zone to create the spill opening.
  • The figure 6 is a perspective view of the bag in the storage position and before use.
  • The figure 7 is a perspective view corresponding to the figure 6 after reversing the bag and uncoupling the folded bottom portion.
  • The figure 8 is a view corresponding to the figure 7 showing the opening of the peel zone.
  • The figure 9 is a view corresponding to the figure 8 after having folded the bottom portion corresponding to the closure of the discharge opening.

Le sac d'emballage désigné par (1) est obtenu par tout moyen connu et approprié. Par exemple, le sac (1) est obtenu à partir d'un film en matière souple ou semi-rigide soumis à différentes opérations de pliage successives pour réaliser des soufflets latéraux (la) et (1b) entre deux parois (1c) et (1d). De manière classique, les soufflets sont constitués de deux plis (A) et (B) reliant les deux parois (1c) (1d). Les bords externes des soufflets au niveau de leur raccordement avec les parois du sac sont assemblés par une ligne de soudure. Le fonds du sac (le) peut également être réalisé en continu par soudure puis rabattue et fixée sur une paroi du sac. De même, le bord supérieur du sac (1f) après remplissage est fermé par une ligne de soudure étanche. Ces différentes dispositions sont parfaitement connues pour un homme du métier.The packaging bag designated by (1) is obtained by any known and appropriate means. For example, the bag (1) is obtained from a film made of flexible or semi-rigid subjected to different successive folding operations to achieve lateral bellows (la) and (1b) between two walls (1c) and (1d). Conventionally, the bellows consist of two folds (A) and (B) connecting the two walls (1c) (1d). The outer edges of the bellows at their connection with the walls of the bag are assembled by a weld line. The bottom of the bag (the) can also be made continuously by welding and folded down and attached to a wall of the bag. Similarly, the upper edge of the bag (1f) after filling is closed by a sealed weld line. These different arrangements are well known to a person skilled in the art.

Selon l'invention, la partie de fond rabattue (1e1) sur la paroi (1c), est fixée par des moyens complémentaires d'accouplement (2) et (3) constitués, par exemple, par des éléments auto-agrippants du type hermaphrodite. Au moins un de ces éléments (3) est fixé sur la face interne de la partie rabattue (1e1) de fond, et en regard d'au moins un autre élément (2) fixé sur la paroi (1c).According to the invention, the bottom portion folded (1e1) on the wall (1c), is fixed by complementary coupling means (2) and (3) constituted, for example, by self-gripping elements of the hermaphrodite type . At least one of these elements (3) is fixed on the inner face of the folded portion (1e1) of the bottom, and facing at least one other element (2) fixed on the wall (1c).

Avantageusement et comme le montrent les figures des dessins, les deux éléments (2) et (3) sont fixés sur la face interne de la partie de fond rabattue (le) à proximité des soufflets, chacun de ces éléments étant disposés en regard d'un élément fixé sur la paroi également à proximité des soufflets. Il apparaît donc qu'en position de coopération des éléments (2) et (3), la partie de fond (1e1) est fixée temporairement sur la partie correspondante de la paroi du sac (figure 2). Autrement dit, le fond est formé comme cela est connu de l'état antérieur de la technique à la différence essentielle que la partie de fond rabattue (le) n'est pas fixée de manière définitive mais d'une manière temporaire (figure 6).Advantageously and as shown in the figures of the drawings, the two elements (2) and (3) are fixed on the internal face of the folded bottom part (1c) near the bellows, each of these elements being arranged opposite an element fixed on the wall also near the bellows. It therefore appears that in the position of cooperation of the elements (2) and (3), the bottom part (1e1) is fixed temporarily on the corresponding part of the wall of the bag ( figure 2 ). In other words, the bottom is formed as is known from the prior art with the essential difference that the bottom part folded (the) is not fixed definitively but temporarily ( figure 6 ).

En effet, selon l'invention, la ligne de soudure (S) constituant le fond (le), présente sensiblement dans sa partie médiane des agencements aptes à créer une ouverture de déversement (O) après avoir retourné le sac (figure 3) et désaccouplé la partie rabattue (1e1) (figure 4) de sorte que le bord supérieur (1f) devient le fond suite audit retournement comme le montrent les figures 1 à 4 et 6 et 7 des dessins.Indeed, according to the invention, the weld line (S) constituting the bottom (1c), has substantially in its middle part arrangements capable of creating a discharge opening (O) after having returned the bag ( figure 3 ) and uncoupling the folded part (1e1) ( figure 4 ) so that the upper edge (1f) becomes the bottom following said reversal as shown by Figures 1 to 4 and 6 and 7 drawings.

Les agencements que présentent la ligne de soudure (S) pour créer l'ouverture de déversement (O) sont constitués par une zone de fixation temporaire des deux parois de la partie de fond rabattue, au niveau de ladite ligne de soudure (S). Cette zone de fixation temporaire constitue une zone de pelabilité, en étant par conséquent apte à être détachée pour créer l'ouverture à partir d'une position jointive et étanche.The arrangements that present the weld line (S) to create the discharge opening (O) are constituted by a temporary fixing zone of the two walls of the folded bottom portion, at said weld line (S). This temporary fixing zone constitutes a zone of peelability, being therefore able to be detached to create the opening from a joined and sealed position.

Selon une autre caractéristique, le sac présente, de part et d'autre de l'ouverture de déversement (O), des agencements aptes à diriger et canaliser les produits contenus dans le sac, en direction de ladite ligne d'ouverture au fur et à mesure du déversement. Par exemple, ces agencements sont constitués par des lignes de soudure (S1) et (S2) orientées en direction de l'ouverture (O) et formées à l'extrémité correspondante des soufflets (la) et (1b).According to another characteristic, the bag has, on both sides of the discharge opening (O), arrangements capable of directing and channeling the products contained in the bag, towards said opening line as and when as the spill. For example, these arrangements consist of weld lines (S1) and (S2) oriented towards the opening (O) and formed at the corresponding end of the bellows (1a) and (1b).

L'utilisation du sac selon les caractéristiques de l'invention est la suivante :

  • Aux figures 2 et 6, le sac est représenté dans sa position remplie avant utilisation. Dans cette position le sac est posé sur son fond (le) obtenu par rabattement et fixation de la partie (1e1). Toujours dans cette position, l'intérieur du sac est parfaitement étanche étant donné qu'aucune ouverture n'est pratiquée au niveau du bord supérieur (1f).
The use of the bag according to the features of the invention is as follows:
  • To the figures 2 and 6 , the bag is shown in its filled position before use. In this position the bag is placed on its bottom (the) obtained by folding and fixing the part (1e1). Still in this position, the inside of the bag is perfectly sealed since no opening is made at the upper edge (1f).

Pour l'utilisation du sac en vu du déversement des produits, il convient de renverser le sac, de sorte que la partie supérieure (1f) va constituer le fond tandis que le fond (le) va constituer la partie supérieure à partir de laquelle est formée l'ouverture de déversement (figure 3). Après avoir renversé le sac, il convient de désolidariser la partie du fond (le) de la paroi, ce qui est parfaitement possible avec les moyens complémentaires d'accouplement temporaire (2) et (3). Dans cette position, la ligne de soudure (S) que présente la partie de fond rabattue, se retrouve à l'extrémité supérieure du sac, de sorte qu'en exercant un effort d'écartement au niveau des parois du sac, sous l'effet des zones de pelabilité, il est possible de créer l'ouverture (O) .(figures 5 et 8).For the use of the bag in view of the spill of products, it is necessary to reverse the bag, so that the upper part (1f) will constitute the bottom while the bottom (the) will constitute the upper part from which is formed the opening spill ( figure 3 ). After reversing the bag, it is necessary to separate the bottom portion (1c) of the wall, which is perfectly possible with the complementary means of temporary coupling (2) and (3). In this position, the weld line (S) that has the folded bottom portion, is found at the upper end of the bag, so that by exerting a spreading force at the walls of the bag, under the effect of the zones of peelability, it is possible to create the opening (O). figures 5 and 8 ).

Dans cette position d'utilisation, le sac est parfaitement stable en position de stockage y compris après avoir déversé une certaine quantité de produits étant donné qu'il ne présente pas de surépaisseur.In this position of use, the bag is perfectly stable in the storage position including after spilling a certain amount of products since it has no extra thickness.

Après avoir déversé la quantité de produits par l'ouverture, on peut replier l'extrémité supérieure du sac à partir de la paroi arrière (1d). Le maintien dans cette position repliée, est assurée par la coopération des moyens complémentaires d'accouplement temporaires (2c3). Dans cette position, l'ouverture (1g) n'est plus en communication avec l'intérieur du sac (figure 9).After pouring the quantity of products through the opening, the upper end of the bag can be folded from the rear wall (1d). Maintaining this folded position is ensured by the cooperation of temporary complementary coupling means (2c3). In this position, the opening (1g) is no longer in communication with the inside of the bag ( figure 9 ).

Sans pour cela sortir du cadre de l'invention, le sac (1) peut être équipé d'une ou plusieurs poignées pour faciliter sa préhension et son transport, ainsi que pour le déversement des produits. De même, la partie supérieure du sac peut présenter une ouverture faisant office de poignée.Without departing from the scope of the invention, the bag (1) can be equipped with one or more handles to facilitate its gripping and transport, as well as for spilling products. Similarly, the upper portion of the bag may have an opening acting as a handle.

Les avantages ressortent bien de la description, en particulier on souligne et on rappelle :

  • la réversibilité du sac entre une position de stockage et une position d'utilisation dans laquelle la partie qui fait office de fond ne présente pas de surépaisseur assurant une parfaite stabilité y compris après avoir distribué une quantité importante de produits.
  • la facilité de refermeture de l'ouverture de déversement par simple repliage de la partie supérieur, la simplicité de réalisation ;
The advantages stand out well from the description, in particular one underlines and recalls:
  • the reversibility of the bag between a storage position and a position of use in which the portion that serves as a bottom has no extra thickness ensuring perfect stability even after having distributed a large amount of products.
  • the ease of reclosing the discharge opening by simply folding the upper part, the simplicity of implementation;

La possibilité d'utiliser une machine existante de fabrication de sacs en continu.The ability to use an existing bag making machine continuously.

Claims (9)

Sac d'emballage en matière plastique présentant un fond (le) et des bords latéraux conformés pour faire office de soufflets (1a) et (1b) constitués de deux plis reliant deux parois (1c) et (1d), le bord supérieur du sac (1f) étant fermé, après remplissage, par une ligne de soudure, le fond (le) étant réalisé en continu par soudure puis rabattu et fixé à l'une des parois (1c) du sac, caractérisé en ce que la partie de fond rabattue (1e1) est fixée par des moyens complémentaires d'accouplement temporaire (2) et (3), ledit fond (le) présentant, sensiblement dans sa partie médiane, des agencements aptes à créer une ouverture de déversement après avoir retourné le sac et désaccouplé la partie rabattue (1e1), de sorte que le bord supérieur (1f) devient le fond suite audit retournement.Plastic packaging bag having a bottom (1) and side edges shaped to act as bellows (1a) and (1b) consisting of two plies connecting two walls (1c) and (1d), the upper edge of the bag (1f) being closed, after filling, by a weld line, the bottom (1c) being made continuously by welding then folded down and fixed to one of the walls (1c) of the bag, characterized in that the bottom part folded (1e1) is fixed by complementary means of temporary coupling (2) and (3), said bottom (the) having, substantially in its middle part, arrangements capable of creating a discharge opening after returning the bag and uncoupling the folded portion (1e1), so that the upper edge (1f) becomes the bottom following said reversal. Sac selon la revendication 1, caractérisé en ce que les moyens complémentaires d'accouplement temporaire (2) et (3) sont constitués par des éléments auto-agrippant, de type hermaphrodite.Bag according to claim 1, characterized in that the complementary means of temporary coupling (2) and (3) are constituted by self-gripping elements, hermaphrodite type. Sac selon l'une quelconque des revendications 1 et 2 , caractérisé en ce qu'au moins un élément (3) est fixé sur la face interne de la partie de fond rabattue (1e1) et en regard d'au moins un autre élément (2) fixé sur la paroi (1c).Bag according to any one of claims 1 and 2, characterized in that at least one element (3) is fixed on the internal face of the folded bottom part (1e1) and opposite at least one other element ( 2) fixed on the wall (1c). Sac selon l'une quelconque des revendications 1-3, caractérisé en ce que deux éléments (2) et (3) sont fixés sur la face interne de la partie de fond rabattue, à proximité des soufflets, chacun desdits éléments étant disposés en regard d'un élément fixe sur la paroi à proximité des soufflets.Bag according to any one of claims 1-3, characterized in that two elements (2) and (3) are fixed on the inner face of the folded bottom portion, close to the bellows, each of said elements being arranged facing each other. a fixed element on the wall near the bellows. Sac selon la revendication 1, caractérisé en ce que les agencements aptes à créer l'ouverture de déversement (O) sont constitués par une zone de fixation temporaire des deux parois de la partie de fond rabattue (1e1), la longueur de ladite zone correspondant aux caractéristiques dimensionnelles souhaitée de ladite ouverture (O).Bag according to claim 1, characterized in that the arrangements for creating the discharge opening (O) consist of a temporary fixing zone of the two walls of the folded bottom part (1e1), the length of said corresponding zone. the desired dimensional characteristics of said opening (O). Sac selon la revendication 5, caractérisé en ce que la zone de fixation temporaire constitue une zone de pelabilité pour créer l'ouverture (O).Bag according to claim 5, characterized in that the temporary fixing zone constitutes a zone of peelability to create the opening (O). Sac selon l'une quelconque des revendications 1-6 , caractérisé en ce qu'il présente, de part et d'autre de l'ouverture de déversement, 2 des agencements aptes à diriger et canaliser les produits contenus dans ledit sac, en direction de ladite ouverture, au fur et à mesure du déversement.Bag according to any one of claims 1-6, characterized in that it has, on either side of the discharge opening, 2 arrangements capable of directing and channeling the products contained in said bag, in the direction of of said opening, as and when the spill. Sac selon la revendication 7, caractérisé en ce que les agencements sont constitués par des lignes de soudures (S1) et (S2) orientées en direction de l'ouverture de déversement, à l'extrémité de la partie correspondante des soufflets.Bag according to claim 7, characterized in that the arrangements consist of weld lines (S1) and (S2) oriented towards the discharge opening at the end of the corresponding part of the bellows. Sac selon l'une quelconque de revendications 1-8, caractérisé en ce que les moyens complémentaires d'accouplement temporaire (2) et (3) de la partie de fond, maintiennent, en position renversée du sac, ladite partie en position repliée correspondant à l'obturation de l'ouverture (O).Bag according to any one of claims 1-8, characterized in that the complementary means of temporary coupling (2) and (3) of the bottom portion, maintain, in the reverse position of the bag, said portion in the folded position corresponding shutting the opening (O).
EP12305329A 2011-03-30 2012-03-21 Plastic package bag Withdrawn EP2505510A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1152625A FR2973349B1 (en) 2011-03-30 2011-03-30 PACKAGING BAG IN PLASTIC MATERIAL

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EP2505510A1 true EP2505510A1 (en) 2012-10-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2508854A (en) * 2012-12-13 2014-06-18 J & Hm Dickson Ltd Fully closeable recycling and refuse sack

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3446420A (en) * 1968-02-08 1969-05-27 American Velcro Inc Flexible mouth container
DE29904488U1 (en) * 1999-03-11 1999-11-11 Kard O Pak Gmbh Deutsche bag
US20040008908A1 (en) * 2000-10-13 2004-01-15 Shepard William H. Roll top bag constructions

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3446420A (en) * 1968-02-08 1969-05-27 American Velcro Inc Flexible mouth container
DE29904488U1 (en) * 1999-03-11 1999-11-11 Kard O Pak Gmbh Deutsche bag
US20040008908A1 (en) * 2000-10-13 2004-01-15 Shepard William H. Roll top bag constructions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2508854A (en) * 2012-12-13 2014-06-18 J & Hm Dickson Ltd Fully closeable recycling and refuse sack
GB2508854B (en) * 2012-12-13 2016-04-20 J & Hm Dickson Ltd Three dimensional fully closeable sack for collecting and transporting waste recycling material and refuse

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FR2973349B1 (en) 2013-04-05

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