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WO2002032781A1 - Packaging envelope and method for making same - Google Patents

Packaging envelope and method for making same Download PDF

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Publication number
WO2002032781A1
WO2002032781A1 PCT/FR2001/003220 FR0103220W WO0232781A1 WO 2002032781 A1 WO2002032781 A1 WO 2002032781A1 FR 0103220 W FR0103220 W FR 0103220W WO 0232781 A1 WO0232781 A1 WO 0232781A1
Authority
WO
WIPO (PCT)
Prior art keywords
sides
pocket
fold line
transverse fold
end pads
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.)
Ceased
Application number
PCT/FR2001/003220
Other languages
French (fr)
Inventor
Barry Andriantsoa Ravelojaona
Jean-Pierre Lao Ouine
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.)
ANTHALA
Original Assignee
ANTHALA
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 ANTHALA filed Critical ANTHALA
Priority to AU2002210662A priority Critical patent/AU2002210662A1/en
Publication of WO2002032781A1 publication Critical patent/WO2002032781A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B65D31/005—Bags or like containers made of paper and having structural provision for thickness of contents by folding a single blank to U-shape to form the base of the bag and opposite sides of the body-portion, the remaining sides being formed by extensions of one or more of these opposite 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
    • 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
    • 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
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • 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
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
    • 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
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
    • B31B2150/0016—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom made from already formed bags
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents

Definitions

  • the present invention relates to a packaging bag blank, as well as a packaging bag produced in particular from this blank. It further relates to a method of manufacturing a packaging bag.
  • a pocket made of a flexible material. This pocket is closed for example by a flexible strand tightening the sides delimiting the pocket at its open end.
  • a pocket constitutes a sachet or bag in which the article is contained.
  • the pocket In order to allow the article contained in the pocket to be presented in a standing position, placed on one of its faces, the pocket should have a bottom devoid of any connecting line, such as a seam or a welding. Indeed, the presence of such an element creating an irregularity makes the packaging unstable, when the latter is placed on a horizontal plane along its bottom.
  • a pocket the bottom of which has no connecting line
  • the bottom is linked to the contour of one end of the sleeve by a peripheral connection formed for example by a seam.
  • This operation is particularly long since it can only be very difficult to be automated and since, for many materials, such as woven materials, the bag should be made manually, the peripheral connection being carried out by sewing.
  • the object of the invention is to propose a pocket, the manufacture of which is simple and can be carried out quickly, while allowing this pocket authorizes the stable presentation of a rectangular article placed in the pocket, this article resting on a horizontal surface along the bottom of the pocket.
  • the invention relates to a blank flexible packaging bag, characterized in that it comprises a sheet of essentially symmetrical shape folded back on itself and forming two sides connected by a transverse fold line. , the longitudinal edges of the two sides being joined to one another along connecting lines formed on either side of the transverse fold line, in that the end pads of the two sides bordering said transverse fold line are folded against the main part of one of the sections, connections being provided at the edges of said end pads, on either side of the transverse fold line, between said end pads and the longitudinal edges of the two sides.
  • the blank comprises one or more of the following characteristics:
  • - Said sheet is formed from a fabric of vegetable fibers
  • the invention further relates to a flexible packaging bag, characterized in that it comprises a blank according to any one of the preceding claims, which blank is turned over to form a pocket in which the two end pads s extend at least partially inside the space delimited by the main parts of the two sides of the pocket, the two end pads being kept apart, in their middle part, by the contents of the pocket to form a bottom essentially flat.
  • the invention also relates to a flexible packaging bag comprising a sheet of essentially symmetrical shape folded back on itself to form two sections connected by a transverse fold line, the longitudinal edges of the two sections being secured one to the other. 'other along connecting lines formed on either side of the transverse fold line, end pads of the two sides bordering said fold line transverse being turned around said fold line and recessed between the main parts of the two sides, connections being provided on either side of the transverse fold line between the edges of the end pads and the longitudinal edges of the two sides .
  • this pocket includes one or more of the following characteristics:
  • - Said sheet is formed from a fabric of vegetable fibers
  • the invention finally relates to a method for manufacturing a bag, characterized in that it comprises:
  • FIG. 1 is a perspective view of the packaging bag filled according to the invention
  • Figure 2 is a perspective view of a strip of packaging material folded over on itself for the manufacture of a bag according to the invention
  • Figures 3 and 4 are perspective views of the strip of Figure 1 at successive stages of manufacture of the packaging bag
  • Figure 5 is a perspective view of the packaging bag according to the invention, before filling.
  • FIG. 1 is shown, in dotted lines, a parallelepipedic article, such as a packet of ground coffee received inside a flexible packaging bag 12 according to the invention.
  • the bag 12 has a tubular body 14 closed at its lower end by a generally flat bottom 16 when the bag is filled.
  • the bottom 16 is devoid of any connecting line which risks making its surface irregular. In particular, it is devoid of any seam.
  • the body 14 has a normally open end forming a neck 18.
  • the neck is kept closed by a link 19 knotted around the neck. This link 19 is formed for example of a strand of raffia.
  • the pocket 12 is formed for example of a woven material, consisting of strands of raffia or crisscrossed linen.
  • the pocket shown in Figure 1 is formed from a single strip of folded and sewn woven material. Such a strip 20 is illustrated in FIG. 2. This strip is of generally symmetrical shape. It is advantageously rectangular in shape. Its length is more than double the height of the pocket to be made.
  • the strip 20 is folded back on itself to form two sections 22 of the same length. These two sides are linked to each other by a fold line 24 extending transversely and substantially perpendicular to the length of the strip 20.
  • the faces of the strip intended to form the external faces of the packaging are arranged one opposite the other, the exposed faces of the folded strip being intended to form the internal face of the packaging.
  • the longitudinal edges 26 of the two sides are attached to one another and are joined to each other by connecting lines 28 extending along the entire length of the panels 22 from the fold line 24 to their opposite transverse edge.
  • connecting lines 28 are advantageously produced by seams formed along the contiguous longitudinal edges 26 of the two sides.
  • the end pads 30 of the two panels are folded against the exposed surface of one of the panels.
  • These end pads 30 consist of bands bordering the fold line 24 and extending from one longitudinal edge to the other of each section.
  • superimposed folding lines 32 are formed transversely in each pan substantially parallel to the transverse folding line 24. The latter is then folded against the main surface of the pan 22 against which the two end pads are folded .
  • the lateral edges 34 of the end pads 30 formed on either side, between the fold line 24 and the fold lines 32, are joined to the longitudinal edges 26 of the remaining main parts of the panels 22 by links 36.
  • connections are established between the end pads 30 and the longitudinal edges 26 of the two sides.
  • connections 36 extend from the fold line 24 to the secondary fold lines 32.
  • connections 36 are formed for example of seams made in excess thickness above the seams 28 connecting the longitudinal edges 26 of the two sides to one another. Thus, along the edges 34 of the end pads 30, the seams 36 and 28 overlap.
  • the blank of the packaging bag illustrated in FIG. 4 no longer needs to be turned over and filled to form the packaging illustrated in FIG. 1.
  • the reversal of the blank illustrated in FIG. 4 consists in passing the end of the blank having the folded end pads 30 through the opening delimited between the opposite edges of the two sides, this introduction taking place by invagination, that is to say by reversing the blank on itself.
  • the pocket blank is turned upside down, leading to the production of the pocket illustrated in FIG. 5.
  • the outer faces of this pocket are formed from the surfaces of the panels initially disposed inside the blank, facing one another.
  • the longitudinal seams 28 extend, after turning over the blank, inside the pocket.
  • the pocket has the bottom 16 formed by the two end panels 30.
  • the two end pads are connected to each other by the transverse fold line 24, which extends inside the body 14 of the pocket in the absence of an article in the pocket.
  • the two end pads 30 are articulated at the end of the main parts of the panels 22 by the fold lines 32 distributed on either side of the bottom of the packaging.
  • the lateral edges 34 of the end pads are linked on either side of the end pads 30 along the longitudinal edges 26 of the panels 22, the lateral edges 34 being sewn along the connecting lines 28 connecting the secured longitudinal edges of both sides.
  • the ends of the fold line 24 are thus retained inside the body of the pocket away from the fold lines 32 formed at the base of the main parts of each pan delimiting the body of the pocket.
  • the two end pads 30 linked to each other define a bowl inside the body of the pocket.
  • the two end pads 30 are brought into the same plane by pressing on the end face of the article.
  • the lateral margins of the end areas defined on either side of the end face of the article are applied against the lateral surface of the article, along the main parts of the panels delimiting the body of the pocket . These lateral margins thus allow a deformation of the end pads, the lateral edges of which are secured to the longitudinal seams 28.
  • a pocket as illustrated in FIG. 1 has a bottom defined by the central part of the two end pads 30 allowing the pocket to be stably placed upright on a horizontal surface, without risk of the latter tipping over. ci, the bottom being devoid of any irregularity resulting from a seam or any other type of connecting line.
  • the pocket being formed from a single sheet, its manufacture is easy, since no part must be brought back, in particular to form the bottom.
  • the empty pocket can be easily transported while the pockets are stacked on top of each other. In this position of the pockets, all the folds are formed only on the bottom, leaving the main parts of the sides intact, thus guaranteeing a pleasant visual appearance of the pocket when filled.
  • the manufacturing method described above provides for first making the longitudinal seams 28, then folding the end pads 30 and then making the seams 36 at the lateral edges of the end pads 30 in order to keep these areas folded against the surface of the main part of a pan.
  • the longitudinal seams 28 and the seams 36 are produced simultaneously in the region of the lateral edges of the end pads 30.
  • the two sides 22 are folded over one another, then the end pads are folded against the surface of the main part of a pan, before the longitudinal seams 28 NE are made. Only after the end pads 30 have been folded down, a seam is made along each lateral edge of these pads. This seam which crosses the four thicknesses of the strip simultaneously provides the longitudinal seam 28 and the seam 36 formed at the edges of the end pads.

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

Abstract

The blank of a flexible packaging envelope comprises a sheet folded on itself and forming two panels (22) linked by a transverse folding line (24), the longitudinal edges (26) of the two panels (22) being mutually secured along linking lines (28) provided on either side of the transverse folding line (24). End zones (30) of the two panels (22) bordering said transverse folding line (24) are folded down against the main part of one of the panels (22), links being provided at the edges (34) of said end zones (30), on either side of the transverse folding line (24), between said end zones (30) and the longitudinal edges (26) of the two panels (22). The packaging envelope is obtained by turning the blank inside out. The invention is useful for packaging ground coffee.

Description

POCHE D'EMBALLAGE ET PROCEDE DE FABRICATION PACKAGING POCKET AND MANUFACTURING METHOD

La présente invention concerne une ébauche de poche d'emballage, ainsi qu'une poche d'emballage réalisée notamment à partir de cette ébauche. Elle concerne en outre un procédé de fabrication d'une poche d'embal- lage.The present invention relates to a packaging bag blank, as well as a packaging bag produced in particular from this blank. It further relates to a method of manufacturing a packaging bag.

Afin d'assurer le conditionnement de certains articles, et notamment d'articles ayant généralement la forme d'un parallélépipède rectangle, tels qu'une boîte, ou encore un paquet de café moulu, il est connu de disposer cet article à l'intérieur d'une poche réalisée dans un matériau souple. Cette poche est obturée par exemple par un brin souple resserrant les pans délimitant la poche à son extrémité ouverte. Une telle poche constitue un sachet ou un sac dans lequel est contenu l'article.In order to ensure the packaging of certain articles, and in particular articles generally having the shape of a rectangular parallelepiped, such as a box, or even a packet of ground coffee, it is known to place this article inside. a pocket made of a flexible material. This pocket is closed for example by a flexible strand tightening the sides delimiting the pocket at its open end. Such a pocket constitutes a sachet or bag in which the article is contained.

Afin de permettre que l'article contenu dans la poche soit présenté en station debout, posé sur l'une de ses faces, il convient que la poche pré- sente un fond dépourvu de toute ligne de liaison, telle qu'une couture ou une soudure. En effet, la présence d'un tel élément créant une irrégularité rend instable le conditionnement, lorsque celui-ci est posé sur un plan horizontal suivant son fond.In order to allow the article contained in the pocket to be presented in a standing position, placed on one of its faces, the pocket should have a bottom devoid of any connecting line, such as a seam or a welding. Indeed, the presence of such an element creating an irregularity makes the packaging unstable, when the latter is placed on a horizontal plane along its bottom.

Pour former une poche dont le fond est dépourvu de ligne de liaison, il est connu de rapporter un élément rectangulaire formant fond à une extrémité d'un manchon destiné à former le corps de la poche. Le fond est lié au contour d'une extrémité du manchon par une liaison périphérique formée par exemple d'une couture.To form a pocket, the bottom of which has no connecting line, it is known to attach a rectangular element forming the bottom to one end of a sleeve intended to form the body of the pocket. The bottom is linked to the contour of one end of the sleeve by a peripheral connection formed for example by a seam.

La fabrication d'une telle poche est relativement longue et délicate, puisqu'il convient de solidariser le fond à l'extrémité d'un manchon, cette solidarisation devant s'effectuer suivant toute la périphérie du fond.The manufacture of such a pocket is relatively long and delicate, since it is necessary to secure the bottom at the end of a sleeve, this fastening having to take place along the entire periphery of the bottom.

Cette opération est particulièrement longue puisque celle-ci ne peut que très difficilement être automatisée et que, pour de nombreux matériaux, tels que des matériaux tissés, il convient que la poche soit réalisée manuel- lement, la liaison périphérique étant effectuée par couture.This operation is particularly long since it can only be very difficult to be automated and since, for many materials, such as woven materials, the bag should be made manually, the peripheral connection being carried out by sewing.

L'invention a pour but de proposer une poche dont la fabrication est simple et peut s'effectuer rapidement, tout en permettant que cette poche autorise la présentation stable d'un article parallélépipédique disposé dans la poche, cet article reposant sur une surface horizontale suivant le fond de la poche.The object of the invention is to propose a pocket, the manufacture of which is simple and can be carried out quickly, while allowing this pocket authorizes the stable presentation of a rectangular article placed in the pocket, this article resting on a horizontal surface along the bottom of the pocket.

A cet effet, l'invention a pour objet une ébauche de poche d'embal- lage souple, caractérisée en ce qu'elle comporte une feuille de forme essentiellement symétrique repliée sur elle-même et formant deux pans reliés par une ligne de pliage transversale, les bords longitudinaux des deux pans étant solidarisés l'un à l'autre suivant des lignes de liaison ménagées de part et d'autre de la ligne de pliage transversale, en ce que des plages d'extrémi- té des deux pans bordant ladite ligne de pliage transversale sont rabattues contre la partie principale de l'un des pans, des liaisons étant ménagées aux bords desdites plages d'extrémité, de part et d'autre de la ligne de pliage transversale, entre lesdites plages d'extrémité et les bords longitudinaux des deux pans. Suivant des modes particuliers de réalisation, l'ébauche comporte l'une ou plusieurs des caractéristiques suivantes :To this end, the invention relates to a blank flexible packaging bag, characterized in that it comprises a sheet of essentially symmetrical shape folded back on itself and forming two sides connected by a transverse fold line. , the longitudinal edges of the two sides being joined to one another along connecting lines formed on either side of the transverse fold line, in that the end pads of the two sides bordering said transverse fold line are folded against the main part of one of the sections, connections being provided at the edges of said end pads, on either side of the transverse fold line, between said end pads and the longitudinal edges of the two sides. According to particular embodiments, the blank comprises one or more of the following characteristics:

- ladite feuille est formée d'un tissu de fibres végétales ;- Said sheet is formed from a fabric of vegetable fibers;

- lesdites lignes de liaison sont formées par des coutures ; et- Said connecting lines are formed by seams; and

- lesdites liaisons sont formées par des coutures. L'invention a en outre pour objet une poche d'emballage souple, caractérisée en ce qu'elle comporte une ébauche selon l'une quelconque des revendications précédentes, laquelle ébauche est retournée pour former une poche dans laquelle les deux plages d'extrémité s'étendent au moins partiellement à l'intérieur de l'espace délimité par les parties principales des deux pans de la poche, les deux plages d'extrémité étant maintenues écartées, dans leur partie médiane, par le contenu de la poche pour former un fond essentiellement plat.- Said connections are formed by seams. The invention further relates to a flexible packaging bag, characterized in that it comprises a blank according to any one of the preceding claims, which blank is turned over to form a pocket in which the two end pads s extend at least partially inside the space delimited by the main parts of the two sides of the pocket, the two end pads being kept apart, in their middle part, by the contents of the pocket to form a bottom essentially flat.

L'invention a également pour objet une poche d'emballage souple comportant une feuille de forme essentiellement symétrique repliée sur elle- même pour former deux pans reliés par une ligne de pliage transversale, les bords longitudinaux des deux pans étant solidarisés l'un à l'autre suivant des lignes de liaison ménagées de part et d'autre de la ligne de pliage transversale, des plages d'extrémité des deux pans bordant ladite ligne de pliage transversale étant retournées autour de ladite ligne de pliage et renfoncées entre les parties principales des deux pans, des liaisons étant prévues de part et d'autre de la ligne de pliage transversale entre les bords des plages d'extrémité et les bords longitudinaux des deux pans. En variante, cette poche comporte l'une ou plusieurs des caractéristiques suivantes :The invention also relates to a flexible packaging bag comprising a sheet of essentially symmetrical shape folded back on itself to form two sections connected by a transverse fold line, the longitudinal edges of the two sections being secured one to the other. 'other along connecting lines formed on either side of the transverse fold line, end pads of the two sides bordering said fold line transverse being turned around said fold line and recessed between the main parts of the two sides, connections being provided on either side of the transverse fold line between the edges of the end pads and the longitudinal edges of the two sides . As a variant, this pocket includes one or more of the following characteristics:

- ladite feuille est formée d'un tissu de fibres végétales ;- Said sheet is formed from a fabric of vegetable fibers;

- lesdites lignes de liaison sont formées par des coutures ; et- Said connecting lines are formed by seams; and

- lesdites liaisons sont formées par des coutures. L'invention a enfin pour objet un procédé de fabrication d'une poche caractérisé en ce qu'il comporte :- Said connections are formed by seams. The invention finally relates to a method for manufacturing a bag, characterized in that it comprises:

A) - une phase initiale de formation d'une ébauche de poche, laquelle phase initiale comporte les étapes consistant en :A) - an initial phase of forming a pocket blank, which initial phase comprises the steps consisting of:

A1 ) - replier une feuille de forme essentiellement symétrique sur elle-même pour former deux pans reliés par une ligne de pliage transversale ;A1) - fold a sheet of essentially symmetrical shape on itself to form two sides connected by a transverse fold line;

A2) - solidariser les bords longitudinaux des deux pans l'un à l'autre suivant des lignes de liaison ménagées de part et d'autre de la ligne de pliage transversale ; A3) - rabattre sur la partie principale de l'un des deux pans les plages d'extrémité des deux pans bordant ladite ligne de pliage transversale ; etA2) - securing the longitudinal edges of the two sides to one another along connecting lines formed on either side of the transverse fold line; A3) - fold the end areas of the two sides bordering said transverse fold line over the main part of one of the two sides; and

A4) - solidariser les bords des plages d'extrémité, de part et d'autre de la ligne de pliage transversale aux bords longitudinaux des deux pans, etA4) - securing the edges of the end pads, on either side of the fold line transverse to the longitudinal edges of the two sides, and

B) - une phase finale consistant à retourner ladite ébauche de poche pour former ladite poche.B) - a final phase consisting in turning over said pocket blank to form said pocket.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux des- sins, sur lesquels : la figure 1 est une vue en perspective de la poche d'emballage remplie selon l'invention ; la figure 2 est une vue en perspective d'une bande d'un matériau d'emballage repliée sur elle-même pour la fabrication d'une poche selon l'invention ; les figures 3 et 4 sont des vues en perspective de la bande de la fi- gure 1 à des stades successifs de fabrication de la poche d'emballage ; et la figure 5 est une vue en perspective de la poche d'emballage selon l'invention, avant remplissage.The invention will be better understood on reading the description which follows, given solely by way of example and made with reference to the drawings, in which: FIG. 1 is a perspective view of the packaging bag filled according to the invention; Figure 2 is a perspective view of a strip of packaging material folded over on itself for the manufacture of a bag according to the invention; Figures 3 and 4 are perspective views of the strip of Figure 1 at successive stages of manufacture of the packaging bag; and Figure 5 is a perspective view of the packaging bag according to the invention, before filling.

Sur la figure 1 est représenté, en traits pointillés, un article parallélé- pipédique, tel qu'un paquet de café moulu reçu à l'intérieur d'une poche d'emballage souple 12 selon l'invention.In FIG. 1 is shown, in dotted lines, a parallelepipedic article, such as a packet of ground coffee received inside a flexible packaging bag 12 according to the invention.

La poche 12 présente un corps tubulaire 14 obturé à son extrémité inférieure par un fond 16 généralement plat lorsque la poche est remplie. Le fond 16 est dépourvu de toute ligne de liaison risquant de rendre sa surface irrégulière. En particulier, il est dépourvu de toute couture. A son extrémité opposée au fond, le corps 14 présente une extrémité normalement ouverte formant un col 18. Sur la figure 1 , le col est maintenu fermé par un lien 19 noué autour du col. Ce lien 19 est formé par exemple d'un brin de raphia.The bag 12 has a tubular body 14 closed at its lower end by a generally flat bottom 16 when the bag is filled. The bottom 16 is devoid of any connecting line which risks making its surface irregular. In particular, it is devoid of any seam. At its end opposite the bottom, the body 14 has a normally open end forming a neck 18. In FIG. 1, the neck is kept closed by a link 19 knotted around the neck. This link 19 is formed for example of a strand of raffia.

La poche 12 est formée par exemple d'un matériau tissé, constitué de brins de raphia ou de lin entrecroisés.The pocket 12 is formed for example of a woven material, consisting of strands of raffia or crisscrossed linen.

La poche représentée sur la figure 1 est formée à partir d'une unique bande de matériau tissé pliée et cousue. Une telle bande 20 est illustrée sur la figure 2. Cette bande est de forme généralement symétrique. Elle est avantageusement de forme rectangulaire. Sa longueur est supérieure au double de la hauteur de la poche à fabriquer.The pocket shown in Figure 1 is formed from a single strip of folded and sewn woven material. Such a strip 20 is illustrated in FIG. 2. This strip is of generally symmetrical shape. It is advantageously rectangular in shape. Its length is more than double the height of the pocket to be made.

Comme illustré sur la figure 2, pour la fabrication de la poche, la bande 20 est repliée sur elle-même pour former deux pans 22 de même longueur. Ces deux pans sont liés l'un à l'autre par une ligne de pliage 24 s'étendant transversalement et sensiblement perpendiculairement à la lon- gueur de la bande 20.As illustrated in FIG. 2, for the manufacture of the pocket, the strip 20 is folded back on itself to form two sections 22 of the same length. These two sides are linked to each other by a fold line 24 extending transversely and substantially perpendicular to the length of the strip 20.

Lors de la fabrication de l'emballage, les faces de la bande destinées à former les faces externes de l'emballage sont disposées l'une en regard de l'autre, les faces exposées de la bande repliée étant destinées à former la face interne de l'emballage.During the manufacture of the packaging, the faces of the strip intended to form the external faces of the packaging are arranged one opposite the other, the exposed faces of the folded strip being intended to form the internal face of the packaging.

A l'étape suivante de fabrication illustrée sur la figure 3, les bords longitudinaux 26 des deux pans sont rapportés l'un sur l'autre et sont solidari- ses l'un à l'autre par des lignes de liaison 28 s'étendant suivant toute la longueur des pans 22 depuis la ligne de pliage 24 jusqu'à leur bord transversal opposé.In the next manufacturing step illustrated in FIG. 3, the longitudinal edges 26 of the two sides are attached to one another and are joined to each other by connecting lines 28 extending along the entire length of the panels 22 from the fold line 24 to their opposite transverse edge.

Ces lignes de liaison 28 sont avantageusement réalisées par des coutures formées le long des bords longitudinaux accolés 26 des deux pans. A l'étape suivante de fabrication illustrée sur la figure 4, les plages d'extrémité 30 des deux pans sont repliées contre la surface exposée de l'un des pans. Ces plages d'extrémité 30 sont constituées de bandes bordant la ligne de pliage 24 et s'étendant d'un bord longitudinal à l'autre de chaque pan. Lors de ce pliage, des lignes de pliage superposées 32 sont formées transversalement dans chaque pan sensiblement parallèlement à la ligne de pliage transversale 24. Cette dernière se trouve alors rabattue contre la surface principale du pan 22 contre lequel sont repliées les deux plages d'extrémité.These connecting lines 28 are advantageously produced by seams formed along the contiguous longitudinal edges 26 of the two sides. In the next manufacturing step illustrated in FIG. 4, the end pads 30 of the two panels are folded against the exposed surface of one of the panels. These end pads 30 consist of bands bordering the fold line 24 and extending from one longitudinal edge to the other of each section. During this folding, superimposed folding lines 32 are formed transversely in each pan substantially parallel to the transverse folding line 24. The latter is then folded against the main surface of the pan 22 against which the two end pads are folded .

Les bords latéraux 34 des plages d'extrémité 30 formés de part et d'autre, entre la ligne de pliage 24 et les lignes de pliage 32, sont solidarisés aux bords longitudinaux 26 des parties principales restantes des pans 22 par des liaisons 36.The lateral edges 34 of the end pads 30 formed on either side, between the fold line 24 and the fold lines 32, are joined to the longitudinal edges 26 of the remaining main parts of the panels 22 by links 36.

Ces liaisons sont établies entre les plages d'extrémité 30 et les bords longitudinaux 26 des deux pans. Avantageusement, ces liaisons 36 s'étendent de la ligne de pliage 24 aux lignes de pliage secondaires 32.These connections are established between the end pads 30 and the longitudinal edges 26 of the two sides. Advantageously, these connections 36 extend from the fold line 24 to the secondary fold lines 32.

Ces liaisons 36 sont formées par exemple de coutures réalisées en surépaisseur au-dessus des coutures 28 liant les bords longitudinaux 26 des deux pans l'un à l'autre. Ainsi, suivant les bords 34 des plages d'extrémité 30, les coutures 36 et 28 se superposent. L'ébauche de la poche d'emballage illustrée sur la figure 4 ne nécessite plus alors que d'être retournée et d'être remplie pour former l'emballage illustré sur la figure 1.These connections 36 are formed for example of seams made in excess thickness above the seams 28 connecting the longitudinal edges 26 of the two sides to one another. Thus, along the edges 34 of the end pads 30, the seams 36 and 28 overlap. The blank of the packaging bag illustrated in FIG. 4 no longer needs to be turned over and filled to form the packaging illustrated in FIG. 1.

Le retournement de l'ébauche illustrée sur la figure 4 consiste à faire passer l'extrémité de l'ébauche présentant les plages d'extrémité 30 rabattues au travers de l'ouverture délimitée entre les bords opposés des deux pans, cette introduction s'effectuant par invagination, c'est-à-dire par retournement de l'ébauche sur elle-même.The reversal of the blank illustrated in FIG. 4 consists in passing the end of the blank having the folded end pads 30 through the opening delimited between the opposite edges of the two sides, this introduction taking place by invagination, that is to say by reversing the blank on itself.

Ainsi, l'ébauche de poche est retournée en doigt de gant, conduisant à l'obtention de la poche illustrée sur la figure 5.Thus, the pocket blank is turned upside down, leading to the production of the pocket illustrated in FIG. 5.

Les faces extérieures de cette poche sont formées des surfaces des pans initialement disposées à l'intérieur de l'ébauche, en regard l'une de l'autre.The outer faces of this pocket are formed from the surfaces of the panels initially disposed inside the blank, facing one another.

Les coutures longitudinales 28 s'étendent, après retournement de l'ébauche, à l'intérieur de la poche.The longitudinal seams 28 extend, after turning over the blank, inside the pocket.

A son extrémité opposée à l'extrémité ouverte, la poche présente le fond 16 formé des deux pans d'extrémité 30.At its end opposite the open end, the pocket has the bottom 16 formed by the two end panels 30.

Ces deux plages d'extrémité sont reliées l'une à l'autre par la ligne de pliage transversale 24, laquelle s'étend à l'intérieur du corps 14 de la poche en l'absence d'article dans la poche. Les deux plages d'extrémité 30 sont articulées à l'extrémité des parties principales des pans 22 par les lignes de pliage 32 réparties de part et d'autre du fond de l'emballage.These two end pads are connected to each other by the transverse fold line 24, which extends inside the body 14 of the pocket in the absence of an article in the pocket. The two end pads 30 are articulated at the end of the main parts of the panels 22 by the fold lines 32 distributed on either side of the bottom of the packaging.

Les bords latéraux 34 des plages d'extrémité sont liés de part et d'autre des plages d'extrémité 30 le long des bords longitudinaux 26 des pans 22, les bords latéraux 34 étant cousus suivant les lignes de liaison 28 reliant les bords longitudinaux solidarisés des deux pans. Les extrémités de la ligne de pliage 24 sont ainsi retenues à l'intérieur du corps de la poche à l'écart des lignes de pliage 32 formées à la base des parties principales de chaque pan délimitant le corps de la poche. Ainsi, en l'absence d'articles, les deux plages d'extrémité 30 liées l'une à l'autre définissent une cuvette à l'intérieur du corps de la poche.The lateral edges 34 of the end pads are linked on either side of the end pads 30 along the longitudinal edges 26 of the panels 22, the lateral edges 34 being sewn along the connecting lines 28 connecting the secured longitudinal edges of both sides. The ends of the fold line 24 are thus retained inside the body of the pocket away from the fold lines 32 formed at the base of the main parts of each pan delimiting the body of the pocket. Thus, in the absence of articles, the two end pads 30 linked to each other define a bowl inside the body of the pocket.

Lorsqu'un article est introduit dans la poche, notamment un article présentant une face plane à son extrémité tournée vers le fond 16, cette face vient s'appliquer dans la partie médiane des deux plages d'extrémité 30, repoussant celles-ci vers l'extérieur du corps 14 de la poche.When an article is introduced into the pocket, in particular an article having a flat face at its end facing the bottom 16, this face is applied in the middle part of the two end pads 30, pushing them towards the outside of the body 14 of the pocket.

Ainsi, comme illustré sur la figure 1 , les deux plages d'extrémité 30 sont ramenées dans un même plan en s'appuyant sur la face d'extrémité de l'article. Les marges latérales des plages d'extrémité définies de part et d'autre de la face d'extrémité de l'article s'appliquent contre la surface latérale de l'article, le long des parties principales des pans délimitant le corps de la poche. Ces marges latérales permettent ainsi une déformation des plages d'extrémité dont les bords latéraux sont solidarisés aux coutures longitudina- les 28.Thus, as illustrated in FIG. 1, the two end pads 30 are brought into the same plane by pressing on the end face of the article. The lateral margins of the end areas defined on either side of the end face of the article are applied against the lateral surface of the article, along the main parts of the panels delimiting the body of the pocket . These lateral margins thus allow a deformation of the end pads, the lateral edges of which are secured to the longitudinal seams 28.

On conçoit qu'une poche telle qu'illustrée sur la figure 1 présente un fond défini par la partie centrale des deux plages d'extrémité 30 permettant de poser de manière stable la poche debout sur une surface horizontale, sans risque de basculement de celle-ci, le fond étant dépourvu de toute irré- gularité résultant d'une couture ou de tout autre type de ligne de liaison.It will be understood that a pocket as illustrated in FIG. 1 has a bottom defined by the central part of the two end pads 30 allowing the pocket to be stably placed upright on a horizontal surface, without risk of the latter tipping over. ci, the bottom being devoid of any irregularity resulting from a seam or any other type of connecting line.

La poche étant formée à partir d'une unique feuille, sa fabrication est aisée, puisqu'aucune pièce ne doit être rapportée, notamment pour former le fond.The pocket being formed from a single sheet, its manufacture is easy, since no part must be brought back, in particular to form the bottom.

En outre, la poche vide peut être transportée facilement alors que les poches sont empilées les unes sur les autres. Dans cette position des poches, tous les plis sont formés seulement sur le fond, laissant intactes les parties principales des pans garantissant ainsi un aspect visuel agréable de la poche une fois emplie.In addition, the empty pocket can be easily transported while the pockets are stacked on top of each other. In this position of the pockets, all the folds are formed only on the bottom, leaving the main parts of the sides intact, thus guaranteeing a pleasant visual appearance of the pocket when filled.

Le procédé de fabrication décrit précédemment prévoit de réaliser d'abord les coutures longitudinales 28, puis de rabattre les plages d'extrémité 30 et de réaliser ensuite les coutures 36 aux bords latéraux des plages d'extrémité 30 afin de maintenir ces plages rabattues contre la surface de la partie principale d'un pan.The manufacturing method described above provides for first making the longitudinal seams 28, then folding the end pads 30 and then making the seams 36 at the lateral edges of the end pads 30 in order to keep these areas folded against the surface of the main part of a pan.

En variante, les coutures longitudinales 28 et les coutures 36 sont réalisées simultanément dans la région des bords latéraux des plages d'extrémité 30.As a variant, the longitudinal seams 28 and the seams 36 are produced simultaneously in the region of the lateral edges of the end pads 30.

A cet effet, les deux pans 22 sont rabattus l'un sur l'autre, puis les plages d'extrémité sont rabattues contre la surface de la partie principale d'un pan, avant que les coutures longitudinales 28 NE soient réalisées. Seulement après que les plages d'extrémité 30 ont été rabattues, une couture est réalisée suivant chaque bord latéral de ces plages. Cette couture qui traverse les quatre épaisseurs de la bande assure simultanément la couture longitudinale 28 et la couture 36 ménagées aux bords des plages d'extrémité.For this purpose, the two sides 22 are folded over one another, then the end pads are folded against the surface of the main part of a pan, before the longitudinal seams 28 NE are made. Only after the end pads 30 have been folded down, a seam is made along each lateral edge of these pads. This seam which crosses the four thicknesses of the strip simultaneously provides the longitudinal seam 28 and the seam 36 formed at the edges of the end pads.

Dans cette variante du procédé de fabrication, seules deux opérations de couture ont à être mises en œuvre, ce qui permet d'augmenter la vitesse de fabrication de la poche. In this variant of the manufacturing process, only two sewing operations have to be implemented, which makes it possible to increase the manufacturing speed of the pocket.

Claims

REVENDICATIONS 1.- Ebauche de poche d'emballage souple, caractérisée en ce qu'elle comporte une feuille (20) de forme essentiellement symétrique repliée sur elle-même et formant deux pans (22) reliés par une ligne de pliage transver- sale (24), les bords longitudinaux (26) des deux pans (22) étant solidarisés l'un à l'autre suivant des lignes de liaison (28) ménagées de part et d'autre de la ligne de pliage transversale (24), en ce que des plages d'extrémité (30) des deux pans (22) bordant ladite ligne de pliage transversale (24) sont rabattues contre la partie principale de l'un des pans (22), des liaisons (36) étant ménagées aux bords (34) desdites plages d'extrémité (30), de part et d'autre de la ligne de pliage transversale (24), entre lesdites plages d'extrémité (30) et les bords longitudinaux (26) des deux pans (22).CLAIMS 1.- Blank of flexible packaging pouch, characterized in that it comprises a sheet (20) of essentially symmetrical shape folded over on itself and forming two sides (22) connected by a transverse fold line ( 24), the longitudinal edges (26) of the two sides (22) being joined to one another along connecting lines (28) formed on either side of the transverse fold line (24), that end pads (30) of the two sides (22) bordering said transverse fold line (24) are folded back against the main part of one of the sides (22), connections (36) being provided at the edges (34) of said end pads (30), on either side of the transverse fold line (24), between said end pads (30) and the longitudinal edges (26) of the two sides (22) . 2.- Ebauche selon la revendication 1 , caractérisée en ce que ladite feuille (20) est formée d'un tissu de fibres végétales. 2. A blank according to claim 1, characterized in that said sheet (20) is formed from a fabric of vegetable fibers. 3.- Ebauche selon la revendication 1 ou 2, caractérisée en ce que lesdites lignes de liaison (28) sont formées par des coutures.3. A blank according to claim 1 or 2, characterized in that said connecting lines (28) are formed by seams. 4.- Ebauche selon l'une quelconque des revendications précédentes, caractérisée en ce que lesdites liaisons (36) sont formées par des coutures. 4. A blank according to any one of the preceding claims, characterized in that said connections (36) are formed by seams. 5.- Poche d'emballage souple, caractérisée en ce qu'elle comporte une ébauche selon l'une quelconque des revendications précédentes, laquelle ébauche est retournée pour former une poche dans laquelle les deux plages d'extrémité (30) s'étendent au moins partiellement à l'intérieur de l'espace délimité par les parties principales des deux pans (22) de la poche, les deux plages d'extrémité (30) étant maintenues écartées, dans leur partie médiane, par le contenu de la poche pour former un fond essentiellement plat.5. A flexible packaging bag, characterized in that it comprises a blank according to any one of the preceding claims, which blank is turned over to form a pocket in which the two end pads (30) extend at at least partially inside the space delimited by the main parts of the two sides (22) of the pocket, the two end pads (30) being kept apart, in their middle part, by the contents of the pocket for form an essentially flat bottom. 6.- Poche d'emballage souple comportant une feuille (20) de forme essentiellement symétrique repliée sur elle-même pour former deux pans (22) reliés par une ligne de pliage transversale (24), les bords longitudinaux (26) des deux pans étant solidarisés l'un à l'autre suivant des lignes de liaison (28) ménagées de part et d'autre de la ligne de pliage transversale (24), des plages d'extrémité (30) des deux pans (22) bordant ladite ligne de pliage transversale (24) étant retournées autour de ladite ligne de pliage et renfon- cées entre les parties principales des deux pans (22), des liaisons (36) étant prévues de part et d'autre de la ligne de pliage transversale (24) entre les bords (34) des plages d'extrémité (30) et les bords longitudinaux (26) des deux pans (22). 6.- Flexible packaging pocket comprising a sheet (20) of essentially symmetrical shape folded back on itself to form two sections (22) connected by a transverse fold line (24), the longitudinal edges (26) of the two sections being joined to one another along connecting lines (28) formed on either side of the transverse fold line (24), end pads (30) of the two sides (22) bordering said transverse fold line (24) being turned around said fold line and created between the main parts of the two sides (22), connections (36) being provided on either side of the transverse fold line (24) between the edges (34) of the end pads (30) and the longitudinal edges (26) of the two sides (22). 7.- Poche selon la revendication 6, caractérisée en ce que ladite feuille (20) est formée d'un tissu de fibres végétales.7.- bag according to claim 6, characterized in that said sheet (20) is formed of a fabric of vegetable fibers. 8.- Poche selon la revendication 6 ou 7, caractérisée en ce que lesdites lignes de liaison (28) sont formées par des coutures.8. Pocket according to claim 6 or 7, characterized in that said connecting lines (28) are formed by seams. 9.- Poche selon l'une quelconque des revendications 6 à 8, caractéri- sée en ce que lesdites liaisons (36) sont formées par des coutures.9. Pocket according to any one of claims 6 to 8, characterized in that said links (36) are formed by seams. 10.- Procédé de fabrication d'une poche d'emballage caractérisé en ce qu'il comporte :10.- Method for manufacturing a packaging bag, characterized in that it comprises: A) - une phase initiale de formation d'une ébauche de poche, laquelle phase initiale comporte les étapes consistant en : A1 ) - replier une feuille (20) de forme essentiellement symétrique sur elle-même pour former deux pans (22) reliés par une ligne de pliage transversale (24) ;A) - an initial phase of forming a pocket blank, which initial phase comprises the steps consisting of: A1) - folding a sheet (20) of essentially symmetrical shape on itself to form two sections (22) connected by a transverse fold line (24); A2) - solidariser les bords longitudinaux (26) des deux pans (22) l'un à l'autre suivant des lignes de liaison (28) ménagées de part et d'autre de la ligne de pliage transversale (24) ;A2) - securing the longitudinal edges (26) of the two sides (22) to each other along connecting lines (28) formed on either side of the transverse fold line (24); A3) - rabattre sur la partie principale de l'un des deux pans (22) les plages d'extrémité (30) des deux pans (33) bordant ladite ligne de pliage transversale (24) ; etA3) - fold over the main part of one of the two sides (22) the end pads (30) of the two sides (33) bordering said transverse fold line (24); and A4) - solidariser les bords (34) des plages d'extrémité (30), de part et d'autre de la ligne de pliage transversale (24) aux bords longitudinaux (26) des deux pans (22), etA4) - securing the edges (34) of the end pads (30), on either side of the transverse fold line (24) to the longitudinal edges (26) of the two sides (22), and B) - une phase finale consistant à retourner ladite ébauche de poche pour former ladite poche. B) - a final phase consisting in turning over said pocket blank to form said pocket.
PCT/FR2001/003220 2000-10-20 2001-10-17 Packaging envelope and method for making same Ceased WO2002032781A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002210662A AU2002210662A1 (en) 2000-10-20 2001-10-17 Packaging envelope and method for making same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR00/13493 2000-10-20
FR0013493A FR2815608B1 (en) 2000-10-20 2000-10-20 PACKAGING POCKET BLANK, PACKAGING POCKET IN PARTICULAR FROM THIS BLANK AND METHOD OF MANUFACTURING

Publications (1)

Publication Number Publication Date
WO2002032781A1 true WO2002032781A1 (en) 2002-04-25

Family

ID=8855581

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Application Number Title Priority Date Filing Date
PCT/FR2001/003220 Ceased WO2002032781A1 (en) 2000-10-20 2001-10-17 Packaging envelope and method for making same

Country Status (3)

Country Link
AU (1) AU2002210662A1 (en)
FR (1) FR2815608B1 (en)
WO (1) WO2002032781A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955749A (en) * 1974-06-28 1976-05-11 Eugene Turkenkopf Expansible envelope
GB1481378A (en) * 1974-12-25 1977-07-27 Dainippon Printing Co Ltd Self-standing bag and production thereof
DE3926728A1 (en) * 1989-08-12 1991-02-21 Kodron Rudolf S Dipl Ing Free standing film pouch for fluids or flowable solids - has welded cross-seams inward folding of long edges and lower seam is bent upwards

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955749A (en) * 1974-06-28 1976-05-11 Eugene Turkenkopf Expansible envelope
GB1481378A (en) * 1974-12-25 1977-07-27 Dainippon Printing Co Ltd Self-standing bag and production thereof
DE3926728A1 (en) * 1989-08-12 1991-02-21 Kodron Rudolf S Dipl Ing Free standing film pouch for fluids or flowable solids - has welded cross-seams inward folding of long edges and lower seam is bent upwards

Also Published As

Publication number Publication date
AU2002210662A1 (en) 2002-04-29
FR2815608A1 (en) 2002-04-26
FR2815608B1 (en) 2003-01-24

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