WO2005080221A1 - Bag made of filter material and containing powdered coffee or the like - Google Patents

Bag made of filter material and containing powdered coffee or the like Download PDF

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Publication number
WO2005080221A1
WO2005080221A1 PCT/FR2005/000285 FR2005000285W WO2005080221A1 WO 2005080221 A1 WO2005080221 A1 WO 2005080221A1 FR 2005000285 W FR2005000285 W FR 2005000285W WO 2005080221 A1 WO2005080221 A1 WO 2005080221A1
Authority
WO
WIPO (PCT)
Prior art keywords
bag
sails
bellows
sachet
coffee
Prior art date
Application number
PCT/FR2005/000285
Other languages
French (fr)
Inventor
Arnaud Paul Henri Roger Lootens
Jean-Luc Marie Pilon
Original Assignee
Lootens Arnaud Paul Henri Roge
Jean-Luc Marie Pilon
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 Lootens Arnaud Paul Henri Roge, Jean-Luc Marie Pilon filed Critical Lootens Arnaud Paul Henri Roge
Publication of WO2005080221A1 publication Critical patent/WO2005080221A1/en

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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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
    • B65D85/8043—Packages adapted to allow liquid to pass through the contents
    • B65D85/8046—Pods, i.e. closed containers made only of filter paper or similar material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B29/00—Packaging of materials presenting special problems
    • B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
    • B65B29/028—Packaging of substances, e.g. tea, which are intended to be infused in the package packaging infusion material into filter bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2042—Means for altering the cross-section of the tube filling opening prior to transversal sealing, e.g. tube spreading devices

Definitions

  • the invention relates to a sachet for coffee powder or a similar product, comprising two side faces made of a material permeable to liquids, in particular filter paper, the sachet being closed and adapted to be placed on a filter holder, while it contains a predetermined quantity of coffee powder or a similar product.
  • the invention also relates to a method and an installation for producing such a sachet.
  • the invention is more particularly suitable for filter holders of coffee makers commonly sold to the general public. It is difficult to make a precise dosage of coffee powder with this type of filter holder. Indeed, depending on the variety and quality of coffee, depending on the type of filter and / or coffee maker, the weight and / or volume of coffee to put in the filter varies.
  • FR-A-2 686 495 discloses a package for ground coffee formed by a closed bag made of filter paper.
  • This bag of generally rectangular shape, is provided with a precut line facilitating its opening. Alternatively, this bag may have a beveled bottom.
  • EP-A-0 460 383 also discloses a closed filter paper sachet containing coffee. This bag is surrounded by a veil fixed on both sides. On each side of the bag, the veil forms foldable handles which, when pushed back towards the other, cause the veil to spread.
  • This device is intended to be placed on a cup. If such sachets make it possible to obtain a predefined quantity of coffee, they are not suitable for use in any type of filter holder. Their shape and dimensions prevent such bags, once opened, from occupying, optimally, the interior of a filter holder, in the manner of a conventional filter. It is to these drawbacks that the invention more particularly intends to remedy by proposing a sachet made of a filtering material and containing coffee, or a similar product, in a predosed amount which is easily adaptable to different types of filter holder.
  • the subject of the invention is a sachet of the aforementioned type, characterized in that the lateral faces are connected by at least one bellows adapted to allow the mutual separation of the lateral faces when the sachet is opened, the latter having then a shape allowing it to be supported on the internal face of a filter holder.
  • a bag is produced which, when opened, has its walls which move away from each other by opening the bellows, in the manner of a corolla and takes the form, generally conical or frustoconical, of the filter holder which receives it.
  • a sachet is thus obtained, which, once opened, is well suited to the filter holder which receives it in a manner quite similar to a conventional filter.
  • the sachet incorporates one or more of the following characteristics: -
  • the side faces are formed in two sails, each of the sails having, substantially in the middle position, several fold lines defining a bellows, the latter forming a connection zone between the side faces.
  • the bellows extends substantially over the entire height of the bag.
  • the bag has, before opening, a generally rectangular shape. As a variant, it has, before opening, a generally trapezoidal shape.
  • the bag includes, on at least one side, generally perpendicular to its height, a zone of structural weakness adapted to facilitate, over the entire length of the side, the opening of the bag.
  • the invention also relates to a method for manufacturing a sachet as described above, this method comprising steps consisting in: a) folding, continuously, a strip of porous and liquid-permeable material, in particular filter paper , so as to form two sails, - b) join, continuously, the free sides of the two sails, - c) form at least one bellows, on at least one of the sails, - d) join the two sails in a generally direction perpendicular to the direction of advance of the strip of filter paper so as to form the bottom of a sachet, - e) fill the sachet thus formed with a predefined quantity of coffee powder or of similar product, - f) close the sachet at the level of a closing area adjoining the junction area of the sails of an adjacent sachet.
  • step c) This method is characterized in that during step c), the bellows is formed to allow mutual separation of the faces when the sachet is open and so that the latter has a shape allowing it to be supported on the face internal of the filter holder.
  • FIG. 1 is a perspective view of a sachet according to the invention in closed configuration
  • - Figure 1A is a section along the plane 1A in Figure 1
  • the bag being shown empty
  • - Figure 2 is a perspective view of the bag of Figure 1 in the open configuration
  • - Figure 3 is a perspective view of the bag of Figure 2 in place in a filter holder
  • - Figure 4 is a schematic representation of an installation for producing the bag according to the invention
  • - Figure 5 is a section along the plane V in Figure 4.
  • Bag 1 shown in Figure 1 e st made of a filter material permeable to liquids, especially water. This material is for example nonwoven or a filter based on cellulosic or synthetic fibers.
  • This bag 1 has, in closed configuration, generally the shape of a parallelepiped and, advantageously, of a rectangular parallelepiped. In a variant not shown, the bag 1 has, before opening, a generally trapezoidal shape.
  • the bag 1 comprises two lateral faces 2 and 3, visible in particular in FIGS. 1A and 2, connected by their respective sides, so as to define the volume of the bag.
  • these faces are located on two webs 20, 30 obtained by folding a sheet of filtering material along a fold line 4. These webs 20, 30 are joined by their respective sides opposite to the fold line 4
  • the junction between the sails is made by welding, heat sealing or gluing at a junction area 5. These sails 20, 30, visible in particular in FIGS.
  • the bottom 8 and the top 9 define between them the height H.
  • seven fold lines or folds 10 are formed on each of the edges 6, 7 of the bag 1. These folds 10 are formed over the entire height H available between the bottom 8 and top 9 of the bag 1.
  • the folds 10 extend alternately towards the inside and the outside of the bag 1 so as to constitute, on each edge 6, 7 of the bag, a bellows 100.
  • the bottom 8, top 9 and height H define, with the bellows 100, the useful volume of the bag 11.
  • the volume of the bag 1 is allowed to adapt to the desired quantity of coffee stored in the bag and / or the various types of filter holder.
  • the number of folds 10 in each bellows 100 is chosen to be greater than two, preferably between three and eleven.
  • the top 9 of the bag 1 corresponds to the region where the opening of the bag takes place.
  • the top 9 has a structural weakness. This structural weakness is obtained, for example by a junction surface between the faces 2, 3 smaller than for the bottom, by a notch on one of the sides favoring the initiation of the tear or by a line of weakness as shown in Figure 1 with reference 9a.
  • Figure 1 with reference 9a a structural weakness obtained, for example by a junction surface between the faces 2, 3 smaller than for the bottom, by a notch on one of the sides favoring the initiation of the tear or by a line of weakness as shown in Figure 1 with reference 9a.
  • the bellows 100 tends to unfold, under the effect of the weight of the coffee and of gravity.
  • the two faces 2, 3 of the bag 1 move away from each other respectively in the directions represented by the arrows Fi and F 2 .
  • the bag 1 opens like a corolla.
  • the bottom 8 of the bag being oriented towards the bottom of the filter holder, that is to say in the species towards its narrowest part, faces 2, 3 move apart until they come into contact with the internal wall 12 of the filter holder 11.
  • the bellows 100 of the bag 1 are more open on the top side 9 of the bag 1, than when the bag is closed.
  • the bag thus takes the form of the filter holder 11, in the manner of a conventional filter.
  • the initial dimensions of the bag 1 and the number of folds defining each bellows 100 make it possible to preserve, as illustrated in FIG. 3, a series of spaces between the webs 20, 30 of the bag 1 and the internal wall 12 of the filter holder.
  • Such a filter can be used in any type of filter holder 11 usually encountered, whether it is the filter holder of an electric coffee maker or a filter holder for “manual” preparation. " Coffee.
  • the material used to make such a bag is flexible enough that it can be placed in a filter holder of generally conical or frustoconical shape, or even in a filter holder of parallelepiped shape.
  • the dimensions of a sachet 1 depend on the quantity of coffee that one wishes to enclose in the latter. This quantity is calculated according to the number of cups desired for a variety and / or strength of coffee desired.
  • Such a sachet can also be filled with another product instead of coffee, it may especially be chicory or any other powdered product suitable for preparing a drink by percolation or leaching.
  • the invention also relates to a method and an installation for manufacturing such a sachet easily and continuously.
  • a strip 13 of filter paper is unrolled continuously, this strip is folded back on itself in two equal parts perpendicular to the width, that is to say along a fold line 4 generally parallel to the direction of travel D of the strip 13.
  • the folding and shaping of the strip 13 is formed around a tubular element 14 shown diagrammatically in FIG. 5, one end of which is in the form of a hopper or funnel 15.
  • the free edges of the strip, parallel to the direction of travel D, are joined for example by gluing, welding or heat sealing.
  • the webs 20, 30 thus formed of the bag are each defined by a half width of the strip 13 extending between the fold line 4 and the junction line 5 formed previously.
  • the means of joining the webs 20, 30 have not been shown in FIG. 4.
  • the bag opens into a "corolla” and it has, open, a shape allowing it to be supported on the internal face of the filter holder.
  • the rollers 16 are movable radially so as to be able to form re-entrant folds 10 of variable depth and thus sachets of variable volume.
  • a device 19, known per se, for bonding, welding or heat sealing connects over their entire width the faces 2 and 3 over an area sufficient to form on the one hand, the bottom 8 of the bag 1 and , on the other hand seal the top 9 of the anterior bag.
  • the desired quantity of coffee is introduced through the central lumen 18 of the tube 14. The introduction of coffee is facilitated by the funnel 15.
  • This filling is advantageously carried out by a metering device automatic not shown.
  • the sachet 1 Once the dose of coffee has been introduced into the sachet 1, the latter is closed by gluing, by welding or heat-sealing. In the embodiment shown, the closure zone is then cut in a direction generally parallel to its largest dimension. The cutting is advantageously carried out by the device 19 for bonding or welding.
  • the sachets 1, after closing, are not separated from each other. They are wrapped and packaged in the form of "ribbons" made up of a certain number of sachets. This number of sachets can correspond to the sachets necessary for the preparation of coffee for a given period. The sachets 1 are then directed by means not shown to a packaging area. In another configuration, the bags 1 have a number of folds
  • the number and arrangement of the means for forming the pleats are adapted. It is also possible to vary the dimensions of the bag, in particular its height H, to adapt to other filter holders than those described.
  • the rollers 16 can be replaced, at least partially, by guides, in particular rods or rails, cooperating with notches of complementary shape.
  • the bag 1 has a bellows generally perpendicular to the folds 10, located for example in the vicinity of the bottom 8, which makes it possible to increase the volume of the bag and especially the filtration surface.
  • gripping members of the bag can be provided, for example tongues or a wire inserted between the two webs, in order to handle the bag hygienically.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Abstract

A bag (1) for powdered coffee or the like, including two side walls (2, 3) made of a liquid-pervious material, particularly filter paper. The bag (1) is sealed and positionable on a filter holder where it can be filled with a predetermined amount of powdered coffee or the like. The side walls (2, 3) of said bag (1) are joined together via at least one bellows enabling the two side walls (2, 3) of said bag (1) to be spaced apart when it is opened. The invention is particularly suitable for mass market coffee machines.

Description

SACHET EN MATERIAU FILTRANT CONTENANT DU CAFE EN POUDRE OU UN PRODUIT SIMILAIRE L'invention a trait à un sachet pour du café en poudre ou un produit similaire, comprenant deux faces latérales réalisées dans un matériau perméable aux liquides, notamment du papier filtre, le sachet étant fermé et adapté pour être disposé sur un porte filtre, alors qu'il contient une quantité prédéterminée de café en poudre ou d'un produit similaire. L'invention a également trait à un procédé et à une installation de production d'un tel sachet. L'invention est plus particulièrement adaptée aux porte filtres des cafetières couramment commercialisées auprès du grand public. Il est difficile d'effectuer un dosage précis du café en poudre avec ce type de porte filtre. En effet, selon la variété et la qualité du café, selon le type de filtre et/ou de cafetière, le poids et/ou le volume de café à mettre dans le filtre varie. Ainsi une même personne a du mal à reproduire, à l'identique, le dosage de son café préféré. De plus, lors du remplissage du filtre en place sur le porte filtre, il arrive que du café soit renversé et/ou passe entre le filtre et le porte filtre. On connaît, par FR-A-2 686 495, un emballage pour café moulu formé par un sachet fermé réalisé en papier filtre. Ce sachet, de forme globalement rectangulaire, est pourvu d'une ligne de prédécoupe facilitant son ouverture. En variante, ce sachet peut présenter un fond biseauté. On connaît également par EP-A-0 460 383 un sachet fermé en papier filtre, contenant du café. Ce sachet est entouré par un voile fixé sur ses deux faces. De chaque côté du sachet, le voile forme des poignées pliables qui, lorsqu'elles sont repoussées l'une vers l'autre, entraînent l'écartement du voile. Ce dispositif est destiné à être posé sur une tasse. Si de tels sachets permettent d'obtenir une quantité prédéfinie de café, ils ne sont pas adaptés à un usage dans tout type de porte filtre. Leur forme et leurs dimensions empêchent de tels sachets, une fois ouverts, d'occuper, de façon optimale, l'intérieur d'un porte filtre, à la manière d'un filtre classique. C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un sachet réalisé en un matériau filtrant et contenant du café, ou un produit analogue, en une quantité prédosée qui est aisément adaptable sur différents types de porte filtre. A cet effet, l'invention a pour objet un sachet du type précité, caractérisé en ce que les faces latérales sont reliées par au moins un soufflet adapté pour permettre l'éloignement mutuel des faces latérales lorsque le sachet est ouvert, celui-ci présentant alors une forme lui permettant d'être en appui sur la face interne d'un porte filtre. Grâce à l'invention, on réalise un sachet qui, lorsqu'on l'ouvre, a ses parois qui s'éloignent l'une de l'autre par ouverture du soufflet, à la manière d'une corolle et prend la forme, généralement conique ou tronconique, du porte filtre qui le reçoit. On obtient ainsi un sachet, qui, une fois ouvert, est bien adapté au porte filtre qui le reçoit de manière tout à fait similaire à un filtre classique. Selon des aspects avantageux mais non obligatoires de l'invention, le sachet incorpore une ou plusieurs des caractéristiques suivantes : - Les faces latérales sont formées dans deux voiles, chacun des voiles possédant, sensiblement en position médiane, plusieurs lignes de pliage définissant un soufflet, ce dernier formant une zone de liaison entre les faces latérales. - Le soufflet s'étend sensiblement sur toute la hauteur du sachet. - Le sachet a, avant ouverture, une forme globalement rectangulaire. En variante, il a, avant ouverture, une forme globalement trapézoïdale. - Le sachet comprend, sur au moins un côté, globalement perpendiculaire à sa hauteur, une zone de faiblesse structurelle adaptée pour faciliter, sur toute la longueur du côté, l'ouverture du sachet. L'invention a également trait à un procédé de fabrication d'un sachet tel que précédemment décrit, ce procédé comprenant des étapes consistant à : - a) plier, en continu, une bande de matériau poreux et perméable aux liquides, notamment du papier filtre, de manière à former deux voiles, - b) joindre, en continu, les côtés libres des deux voiles, - c) former au moins un soufflet, sur au moins un des voiles, - d) joindre les deux voiles selon une direction globalement perpendiculaire à la direction d'avance de la bande de papier filtre de manière à former le fond d'un sachet, - e) remplir le sachet ainsi formé avec une quantité prédéfinie de café en poudre ou de produit similaire, - f) fermer le sachet au niveau d'une zone de fermeture mitoyenne de la zone de jonction des voiles d'un sachet adjacent. Ce procédé est caractérisé en ce que lors de l'étape c), le soufflet est formé pour permettre l'éloignement mutuel des faces lorsque le sachet est ouvert et pour que ce dernier présente une forme lui permettant d'être en appui sur la face interne du porte-filtre. L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lecture de la description qui va suivre d'un mode de réalisation d'un sachet conforme à l'invention, d'une installation de production et d'un procédé de fabrication de ce sachet, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés dans lesquels : - la figure 1 est une vue en perspective d'un sachet conforme à l'invention en configuration fermée, - la figure 1A est une coupe selon le plan 1A à la figure 1 , le sachet étant représenté vide, - la figure 2 est une vue en perspective du sachet de la figure 1 en configuration ouverte, - la figure 3 est une vue en perspective du sachet de la figure 2 en place dans un porte filtre, - la figure 4 est une représentation schématique d'une installation de production du sachet conforme à l'invention et, - la figure 5 est une coupe selon le plan V à la figure 4. Le sachet 1 représenté à la figure 1 est réalisé en un matériau filtrant perméable aux liquides notamment à l'eau. Ce matériau est par exemple du non tissé ou un filtre à base de fibres cellulosiques ou synthétiques. Ce sachet 1 a, en configuration fermée, globalement la forme d'un parallélépipède et, avantageusement, d'un parallélépipède rectangle. Dans une variante non représentée, le sachet 1 a, avant ouverture, une forme globalement trapézoïdale. Le sachet 1 comprend deux faces latérales 2 et 3, visibles notamment aux figures 1A et 2, reliées par leurs côtés respectifs, de manière à définir le volume du sachet. Avantageusement, ces faces sont situées sur deux voiles 20, 30 obtenus par pliage d'une feuille de matériau filtrant le long d'une ligne de pliage 4. Ces voiles 20, 30 sont réunis par leurs côtés respectifs opposés à la ligne de pliage 4. La jonction entre les voiles est faite par soudage, thermosoudage ou collage au niveau d'une zone de jonction 5. Ces voiles 20, 30, visibles notamment aux figures 1A et 2, sont ménagés de manière à ce que, chacun, définisse globalement une demi face de chaque face 2 et 3. La plus grande dimension du sachet 1 , en l'espèce sa hauteur H, est parallèle aux deux zones 4 et 5 des voiles 20 et 30. La zone 4 est peu marquée, de sorte que, lorsque les voiles 20, 30 sont réunis, on peut aisément positionner la zone 4 globalement en position centrale sur la face 2, la zone 5 étant globalement en position centrale sur la face 3. Ainsi, on forme les bords longitudinaux 6, 7 du sachet qui sont globalement parallèles aux zones 4 et 5. Le sachet 1 comporte deux bords transversaux 8, 9 globalement perpendiculaires aux bords 6 et 7. Ces bords forment le fond 8 et le haut 9 du sachet et sont réalisés par soudage, collage ou thermosoudage des faces 2, 3. Le fond 8 et le haut 9 définissent entre eux la hauteur H. Sur chacun des bords 6, 7 du sachet 1 , sept lignes de pliage ou plis 10 sont formés. Ces plis 10 sont formés sur toute la hauteur H disponible entre le fond 8 et le haut 9 du sachet 1. Les plis 10 s'étendent alternativement en direction de l'intérieur et de l'extérieur du sachet 1 de manière à constituer, sur chaque bord 6, 7 du sachet, un soufflet 100. Le fond 8, le haut 9 et la hauteur H définissent, avec les soufflets 100, le volume utile du sachet 11. Ainsi, grâce aux soufflets 100, on permet au volume du sachet 1 de s'adapter à la quantité voulue de café stockée dans le sachet et/ou aux divers types de porte filtres. En pratique, le nombre de plis 10 dans chaque soufflet 100 est choisi supérieur à deux, de préférence compris entre trois et onze. Le haut 9 du sachet 1 correspond à la région où s'effectue l'ouverture du sachet. Pour faciliter cette ouverture le haut 9 présente une faiblesse structurelle. Cette faiblesse structurelle est obtenue, par exemple par une surface de jonction entre les faces 2, 3 plus petite que pour le fond, par une encoche sur un des côtés favorisant l'amorce de la déchirure ou par une ligne d'affaiblissement comme représentée à la figure 1 avec la référence 9a. Ainsi l'ouverture totale du sachet par ce côté est facilitée. Lorsque le sachet 1 est ouvert, comme illustré à la figure 2, le soufflet 100 a tendance à se déplier, sous l'effet du poids du café et de la gravité. Ainsi, les deux faces 2, 3 du sachet 1 s'éloignent l'une de l'autre respectivement selon les directions représentées par les flèches Fi et F2. Le sachet 1 s'ouvre à la manière d'une corolle. Si, comme illustré à la figure 3, préalablement à l'ouverture du sachet, on dispose celui-ci dans un porte filtre 11 , le fond 8 du sachet étant orienté vers le bas du porte filtre c'est-à-dire, en l'espèce vers sa partie la plus étroite, les faces 2, 3 s'écartent jusqu'à venir au contact de la paroi interne 12 du porte filtre 11. Dans cette configuration, les soufflets 100 du sachet 1 sont plus ouverts du côté du haut 9 du sachet 1 , que lorsque le sachet est fermé. Le sachet prend ainsi la forme du porte filtre 11 , à la manière d'un filtre classique. Les dimensions initiales du sachet 1 et le nombre de plis définissant chaque soufflet 100, permettent de préserver, comme illustré à la figure 3, une série d'espaces entre les voiles 20, 30 du sachet 1 et la paroi interne 12 du porte filtre. Ces espaces facilitent l'adaptation du sachet 1 sur le porte filtre 11. Un tel filtre est utilisable dans tout type de porte filtre 11 habituellement rencontré, que ce soit le porte filtre d'une cafetière électrique ou un porte filtre pour une préparation « manuelle » du café. Le matériau utilisé pour réaliser un tel sachet est suffisamment souple pour que celui-ci puisse être disposé dans un porte filtre de forme globalement conique ou tronconique, voire dans un porte filtre de forme parallélepipédique. Les dimensions d'un sachet 1 dépendent de la quantité de café que l'on souhaite enfermer dans ce dernier. Cette quantité est calculée en fonction de nombre de tasses voulues pour une variété et/ou une force de café désirées. Un tel sachet peut également être rempli avec un autre produit en lieu et place du café, il peut s'agir notamment de chicorée ou tout autre produit en poudre adapté pour préparer une boisson par percolation ou lixiviation. L'invention a également trait à un procédé et à une installation de fabrication d'un tel sachet de manière aisée et en continue. Dans l'installation, illustrée à la figure 4, une bande 13 de papier filtre est déroulée en continu, cette bande est repliée sur elle-même en deux parties égales perpendiculairement à la laize c'est-à-dire selon une ligne de pliage 4 globalement parallèle au sens de défilement D de la bande 13. Le pliage et la mise en forme de la bande 13 se fait autour d'un élément tubulaire 14 schematiquement représenté à la figure 5 dont une extrémité est, en forme de trémie ou d'entonnoir 15. Les bords libres de la bande, parallèles au sens de défilement D, sont joints par exemple par collage, par soudage ou thermosoudage. Les voiles 20, 30 ainsi formés du sachet sont chacun définis par une demi laize de la bande 13 s'étendant entre la ligne de pliage 4 et la ligne de jonction 5 formée précédemment. Pour la clarté du dessin, les moyens de jonction des voiles 20, 30 n'ont pas été représentés sur la figure 4. Sur l'extérieur du tube 14, et au voisinage de l'extrémité opposée à un entonnoir d'alimentation 15, plusieurs jeux de disques ou de galets 16 sont disposés. Dans un jeu, les galets 16 sont répartis par paires et diamétralement opposés par rapport à l'axe A-A' du tube 14. Ces paires sont disposées selon une direction globalement parallèle à l'axe longitudinal AA' du tube 14. Trois jeux superposés de galets 16, visibles à la figure 5, sont partiellement insérés dans des encoches 17 ménagées dans la paroi externe 40 du tube 14. Ces encoches 17, de forme complémentaire à celles des galets 16, permettent de ménager un espace entre la paroi de l'encoche 17 et le galet 16. Cet espace est occupé par les voiles 20, 30 réunis. Ainsi, les encoches 17 et les galets 16, par leurs dimensions et leur nombre, définissent le trajet du matériau formant les voiles 20, 30 du sachet, trajet nécessaire à la formation des plis rentrants 10, des plis sortants étant définis entre deux plis rentrants adjacents. Les plis rentrants 10 et les plis sortants forment au moins un soufflet (100) permettant, lorsque le sachet est ouvert, l'éloignement mutuel des faces (2,3). Ainsi, le sachet s'ouvre en « corolle » et il présente, ouvert, une forme lui permettant d'être en appui sur la face interne du porte filtre. Les galets 16 sont mobiles radialement afin de pouvoir former des plis rentrants 10 de profondeur variable et ainsi des sachets de volume variable. A la suite des galets 16, un dispositif 19, connu en soi, de collage, de soudage ou thermosoudage relie sur toute leur largeur les faces 2 et 3 sur une zone suffisante pour former d'une part, le fond 8 du sachet 1 et, d'autre part sceller le haut 9 du sachet antérieur. Lorsqu'un sachet 1 a son fond 8 formé, on introduit la quantité désirée de café par la lumière centrale 18 du tube 14. L'introduction du café est facilité par l'entonnoir 15. Ce remplissage est avantageusement effectué par un dispositif de dosage automatique non représenté. Une fois la dose de café introduite dans le sachet 1, celui-ci est refermé par collage, par soudage ou thermosoudage. Dans le mode de réalisation représenté, la zone de fermeture est alors découpée selon une direction globalement parallèle à sa plus grande dimension. La découpe est avantageusement réalisée par le dispositif 19 de collage ou soudage. Dans un autre mode de réalisation non représenté, les sachets 1 , après fermeture, ne sont pas séparés les uns des autres. Ils sont emballés et empaquetés sous forme de « rubans » composés d'un certains nombre de sachets. Ce nombre de sachets peut correspondre aux sachets nécessaires à la préparation de café pour une période donnée. Les sachets 1 sont ensuite dirigés par des moyens non représentés vers une zone d'emballage et d'empaquetage. Dans une autre configuration, les sachets 1 présentent un nombre de plisThe invention relates to a sachet for coffee powder or a similar product, comprising two side faces made of a material permeable to liquids, in particular filter paper, the sachet being closed and adapted to be placed on a filter holder, while it contains a predetermined quantity of coffee powder or a similar product. The invention also relates to a method and an installation for producing such a sachet. The invention is more particularly suitable for filter holders of coffee makers commonly sold to the general public. It is difficult to make a precise dosage of coffee powder with this type of filter holder. Indeed, depending on the variety and quality of coffee, depending on the type of filter and / or coffee maker, the weight and / or volume of coffee to put in the filter varies. Thus the same person has trouble reproducing, identically, the dosage of his favorite coffee. In addition, when filling the filter in place on the filter holder, it happens that coffee is spilled and / or passes between the filter and the filter holder. FR-A-2 686 495 discloses a package for ground coffee formed by a closed bag made of filter paper. This bag, of generally rectangular shape, is provided with a precut line facilitating its opening. Alternatively, this bag may have a beveled bottom. EP-A-0 460 383 also discloses a closed filter paper sachet containing coffee. This bag is surrounded by a veil fixed on both sides. On each side of the bag, the veil forms foldable handles which, when pushed back towards the other, cause the veil to spread. This device is intended to be placed on a cup. If such sachets make it possible to obtain a predefined quantity of coffee, they are not suitable for use in any type of filter holder. Their shape and dimensions prevent such bags, once opened, from occupying, optimally, the interior of a filter holder, in the manner of a conventional filter. It is to these drawbacks that the invention more particularly intends to remedy by proposing a sachet made of a filtering material and containing coffee, or a similar product, in a predosed amount which is easily adaptable to different types of filter holder. To this end, the subject of the invention is a sachet of the aforementioned type, characterized in that the lateral faces are connected by at least one bellows adapted to allow the mutual separation of the lateral faces when the sachet is opened, the latter having then a shape allowing it to be supported on the internal face of a filter holder. Thanks to the invention, a bag is produced which, when opened, has its walls which move away from each other by opening the bellows, in the manner of a corolla and takes the form, generally conical or frustoconical, of the filter holder which receives it. A sachet is thus obtained, which, once opened, is well suited to the filter holder which receives it in a manner quite similar to a conventional filter. According to advantageous but not compulsory aspects of the invention, the sachet incorporates one or more of the following characteristics: - The side faces are formed in two sails, each of the sails having, substantially in the middle position, several fold lines defining a bellows, the latter forming a connection zone between the side faces. - The bellows extends substantially over the entire height of the bag. - The bag has, before opening, a generally rectangular shape. As a variant, it has, before opening, a generally trapezoidal shape. - The bag includes, on at least one side, generally perpendicular to its height, a zone of structural weakness adapted to facilitate, over the entire length of the side, the opening of the bag. The invention also relates to a method for manufacturing a sachet as described above, this method comprising steps consisting in: a) folding, continuously, a strip of porous and liquid-permeable material, in particular filter paper , so as to form two sails, - b) join, continuously, the free sides of the two sails, - c) form at least one bellows, on at least one of the sails, - d) join the two sails in a generally direction perpendicular to the direction of advance of the strip of filter paper so as to form the bottom of a sachet, - e) fill the sachet thus formed with a predefined quantity of coffee powder or of similar product, - f) close the sachet at the level of a closing area adjoining the junction area of the sails of an adjacent sachet. This method is characterized in that during step c), the bellows is formed to allow mutual separation of the faces when the sachet is open and so that the latter has a shape allowing it to be supported on the face internal of the filter holder. The invention will be better understood and other advantages thereof will appear more clearly on reading the description which follows of an embodiment of a sachet in accordance with the invention, of a production installation and of a process for manufacturing this sachet, given solely by way of example and made with reference to the appended drawings in which: FIG. 1 is a perspective view of a sachet according to the invention in closed configuration, - Figure 1A is a section along the plane 1A in Figure 1, the bag being shown empty, - Figure 2 is a perspective view of the bag of Figure 1 in the open configuration, - Figure 3 is a perspective view of the bag of Figure 2 in place in a filter holder, - Figure 4 is a schematic representation of an installation for producing the bag according to the invention and, - Figure 5 is a section along the plane V in Figure 4. Bag 1 shown in Figure 1 e st made of a filter material permeable to liquids, especially water. This material is for example nonwoven or a filter based on cellulosic or synthetic fibers. This bag 1 has, in closed configuration, generally the shape of a parallelepiped and, advantageously, of a rectangular parallelepiped. In a variant not shown, the bag 1 has, before opening, a generally trapezoidal shape. The bag 1 comprises two lateral faces 2 and 3, visible in particular in FIGS. 1A and 2, connected by their respective sides, so as to define the volume of the bag. Advantageously, these faces are located on two webs 20, 30 obtained by folding a sheet of filtering material along a fold line 4. These webs 20, 30 are joined by their respective sides opposite to the fold line 4 The junction between the sails is made by welding, heat sealing or gluing at a junction area 5. These sails 20, 30, visible in particular in FIGS. 1A and 2, are arranged so that, each one, defines overall a half face of each face 2 and 3. The largest dimension of the bag 1, in this case its height H, is parallel to the two zones 4 and 5 of the sails 20 and 30. The zone 4 is not very marked, so that , when the webs 20, 30 are united, it is easy to position the zone 4 generally in the central position on the face 2, the zone 5 being generally in the central position on the face 3. Thus, the longitudinal edges 6, 7 of the sachet which are generally parallel to zones 4 and 5. Sachet 1 has two transverse edges 8, 9 generally perpendicular to the edges 6 and 7. These edges form the bottom 8 and the top 9 of the bag and are produced by welding, bonding or heat-sealing the faces 2, 3. The bottom 8 and the top 9 define between them the height H. On each of the edges 6, 7 of the bag 1, seven fold lines or folds 10 are formed. These folds 10 are formed over the entire height H available between the bottom 8 and top 9 of the bag 1. The folds 10 extend alternately towards the inside and the outside of the bag 1 so as to constitute, on each edge 6, 7 of the bag, a bellows 100. The bottom 8, top 9 and height H define, with the bellows 100, the useful volume of the bag 11. Thus, thanks to the bellows 100, the volume of the bag 1 is allowed to adapt to the desired quantity of coffee stored in the bag and / or the various types of filter holder. In practice, the number of folds 10 in each bellows 100 is chosen to be greater than two, preferably between three and eleven. The top 9 of the bag 1 corresponds to the region where the opening of the bag takes place. To facilitate this opening, the top 9 has a structural weakness. This structural weakness is obtained, for example by a junction surface between the faces 2, 3 smaller than for the bottom, by a notch on one of the sides favoring the initiation of the tear or by a line of weakness as shown in Figure 1 with reference 9a. Thus the total opening of the bag from this side is facilitated. When the bag 1 is open, as illustrated in FIG. 2, the bellows 100 tends to unfold, under the effect of the weight of the coffee and of gravity. Thus, the two faces 2, 3 of the bag 1 move away from each other respectively in the directions represented by the arrows Fi and F 2 . The bag 1 opens like a corolla. If, as illustrated in FIG. 3, prior to the opening of the bag, the latter is placed in a filter holder 11, the bottom 8 of the bag being oriented towards the bottom of the filter holder, that is to say in the species towards its narrowest part, faces 2, 3 move apart until they come into contact with the internal wall 12 of the filter holder 11. In this configuration, the bellows 100 of the bag 1 are more open on the top side 9 of the bag 1, than when the bag is closed. The bag thus takes the form of the filter holder 11, in the manner of a conventional filter. The initial dimensions of the bag 1 and the number of folds defining each bellows 100, make it possible to preserve, as illustrated in FIG. 3, a series of spaces between the webs 20, 30 of the bag 1 and the internal wall 12 of the filter holder. These spaces facilitate the adaptation of the bag 1 on the filter holder 11. Such a filter can be used in any type of filter holder 11 usually encountered, whether it is the filter holder of an electric coffee maker or a filter holder for “manual” preparation. " Coffee. The material used to make such a bag is flexible enough that it can be placed in a filter holder of generally conical or frustoconical shape, or even in a filter holder of parallelepiped shape. The dimensions of a sachet 1 depend on the quantity of coffee that one wishes to enclose in the latter. This quantity is calculated according to the number of cups desired for a variety and / or strength of coffee desired. Such a sachet can also be filled with another product instead of coffee, it may especially be chicory or any other powdered product suitable for preparing a drink by percolation or leaching. The invention also relates to a method and an installation for manufacturing such a sachet easily and continuously. In the installation, illustrated in FIG. 4, a strip 13 of filter paper is unrolled continuously, this strip is folded back on itself in two equal parts perpendicular to the width, that is to say along a fold line 4 generally parallel to the direction of travel D of the strip 13. The folding and shaping of the strip 13 is formed around a tubular element 14 shown diagrammatically in FIG. 5, one end of which is in the form of a hopper or funnel 15. The free edges of the strip, parallel to the direction of travel D, are joined for example by gluing, welding or heat sealing. The webs 20, 30 thus formed of the bag are each defined by a half width of the strip 13 extending between the fold line 4 and the junction line 5 formed previously. For clarity of the drawing, the means of joining the webs 20, 30 have not been shown in FIG. 4. On the outside of the tube 14, and in the vicinity of the end opposite to a feed funnel 15, several sets of discs or rollers 16 are arranged. In a set, the rollers 16 are distributed in pairs and diametrically opposite with respect to the axis AA 'of the tube 14. These pairs are arranged in a direction generally parallel to the longitudinal axis AA' of the tube 14. Three sets of superimposed rollers 16, visible in FIG. 5, are partially inserted in notches 17 formed in the external wall 40 of the tube 14. These notches 17, of shape complementary to those of the rollers 16, make it possible to provide a space between the wall of the notch 17 and the roller 16. This space is occupied by the sails 20, 30 joined together. Thus, the notches 17 and the rollers 16, by their dimensions and their number, define the path of the material forming the webs 20, 30 of the bag, path necessary for the formation of the inside folds 10, outgoing folds being defined between two adjacent inside folds. The incoming folds 10 and the outgoing folds form at least one bellows (100) allowing, when the bag is open, the mutual separation of the faces (2,3). Thus, the bag opens into a "corolla" and it has, open, a shape allowing it to be supported on the internal face of the filter holder. The rollers 16 are movable radially so as to be able to form re-entrant folds 10 of variable depth and thus sachets of variable volume. Following the rollers 16, a device 19, known per se, for bonding, welding or heat sealing connects over their entire width the faces 2 and 3 over an area sufficient to form on the one hand, the bottom 8 of the bag 1 and , on the other hand seal the top 9 of the anterior bag. When a bag 1 has its bottom 8 formed, the desired quantity of coffee is introduced through the central lumen 18 of the tube 14. The introduction of coffee is facilitated by the funnel 15. This filling is advantageously carried out by a metering device automatic not shown. Once the dose of coffee has been introduced into the sachet 1, the latter is closed by gluing, by welding or heat-sealing. In the embodiment shown, the closure zone is then cut in a direction generally parallel to its largest dimension. The cutting is advantageously carried out by the device 19 for bonding or welding. In another embodiment not shown, the sachets 1, after closing, are not separated from each other. They are wrapped and packaged in the form of "ribbons" made up of a certain number of sachets. This number of sachets can correspond to the sachets necessary for the preparation of coffee for a given period. The sachets 1 are then directed by means not shown to a packaging area. In another configuration, the bags 1 have a number of folds
10 différent de ceux mentionnés, notamment pour s'adapter à d'autres tailles de porte filtre que celles décrites. Dans ce cas, le nombre et la disposition des moyens de formation des plis sont adaptés. On peut également faire varier les dimensions du sachet, notamment sa hauteur H, pour s'adapter à d'autres porte-filtres que ceux décrits. En variante, les galets 16 peuvent être remplacés, au moins partiellement, par des guides, notamment des tiges ou des rails, coopérant avec des encoches de forme complémentaire. Dans un autre mode de réalisation, le sachet 1 présente un soufflet globalement perpendiculaire aux plis 10, situé par exemple au voisinage du fond 8, ce qui permet d'augmenter le volume du sachet et surtout la surface de filtration. En variante, au voisinage du haut 9 du sachet 1, des organes de préhension du sachet peuvent être prévus, par exemple des languettes ou un fil inséré entre les deux voiles, afin de manipuler le sachet de façon hygiénique. 10 different from those mentioned, in particular to adapt to other sizes of filter holder than those described. In this case, the number and arrangement of the means for forming the pleats are adapted. It is also possible to vary the dimensions of the bag, in particular its height H, to adapt to other filter holders than those described. As a variant, the rollers 16 can be replaced, at least partially, by guides, in particular rods or rails, cooperating with notches of complementary shape. In another embodiment, the bag 1 has a bellows generally perpendicular to the folds 10, located for example in the vicinity of the bottom 8, which makes it possible to increase the volume of the bag and especially the filtration surface. As a variant, in the vicinity of the top 9 of the bag 1, gripping members of the bag can be provided, for example tongues or a wire inserted between the two webs, in order to handle the bag hygienically.

Claims

REVENDICATIONS 1. Sachet pour du café en poudre ou un produit similaire, comprenant deux faces latérales réalisées dans un matériau perméable aux liquides, notamment du papier filtre, ledit sachet étant fermé et adapté pour être disposé sur un porte filtre, alors qu'il contient une quantité prédéterminée de café en poudre ou d'un produit similaire, caractérisé en ce que lesdites faces latérales (2, 3) sont reliées par au moins un soufflet (100) adapté pour permettre l'éloignement mutuel desdites faces (2, 3) lorsque ledit sachet (1) est ouvert, celui-ci présentant alors une forme lui permettant d'être en appui sur la face interne (12) d'un porte filtre (11). 2. Sachet selon la revendication 1, caractérisé en ce que lesdites faces latérales (2, 3) sont formées dans deux voiles (20, 30), chacun des voiles (20, 30) possédant, sensiblement en position médiane, plusieurs lignes de pliage (10) définissant un soufflet (100), ce dernier formant une zone de liaison (6, 7) entre lesdites faces latérales (2, 3). 3. Sachet selon la revendication 1 ou 2, caractérisé en ce que ledit soufflet (100) s'étend sensiblement sur toute la hauteur (H) du sachet (1). 4. Sachet selon l'une des revendications précédentes, caractérisé en ce que ledit sachet (1) a, avant ouverture, une forme globalement rectangulaire. 5. Sachet selon l'une des revendications 1 à 3, caractérisé en ce que ledit sachet (1) a, avant ouverture, une forme globalement trapézoïdale. 6. Sachet selon l'une des revendications précédentes, caractérisé en ce qu'il comprend, sur au moins un côté (9), globalement perpendiculaire à sa hauteur (H), une zone de faiblesse structurelle (9a) adaptée pour faciliter, sur toute la longueur dudit côté (9), l'ouverture dudit sachet (1). 7. Procédé de fabrication d'un sachet rempli de café en poudre ou d'un produit similaire, comprenant deux faces latérales réalisées dans un matériau perméable aux liquides, notamment du papier filtre, ledit sachet étant fermé et adapté pour être disposé sur un porte filtre, ledit procédé comprenant des étapes suivantes consistant à : a) plier, en continu, une bande (13) de matériau poreux et perméable aux liquides, notamment du papier filtre, de manière à former deux voiles (20, 30), b) joindre (5), en continu, les côtés libres des deux voiles (20, 30), c) former au moins un soufflet (100), sur au moins un des voiles (20, 30), d) joindre les deux voiles (20, 30) selon une direction globalement perpendiculaire à la direction d'avance de la bande (13) de papier filtre de manière à former le fond d'un sachet (1), e) remplir ledit sachet (1) ainsi formé avec une quantité prédéfinie de café en poudre ou de produit similaire, f) fermer ledit sachet (1) au niveau d'une zone de fermeture (9) mitoyenne de la zone de jonction (8) des voiles (20, 30) d'un sachet adjacent, caractérisé en ce que, lors de l'étape c), ledit soufflet (100) est formé pour permettre l'éloignement mutuel desdites faces (2, 3) lorsque le sachet est ouvert et pour que ce dernier présente une forme lui permettant d'être en appui sur la face interne (12) d'un porte filtre (11). CLAIMS 1. Bag for coffee powder or a similar product, comprising two side faces made of a material permeable to liquids, in particular filter paper, said bag being closed and suitable for being placed on a filter holder, while it contains a predetermined quantity of coffee powder or a similar product, characterized in that said side faces (2, 3) are connected by at least one bellows (100) adapted to allow the mutual separation of said faces (2, 3) when said bag (1) is open, the latter then having a shape allowing it to be supported on the internal face (12) of a filter holder (11). 2. Bag according to claim 1, characterized in that said lateral faces (2, 3) are formed in two sails (20, 30), each of the sails (20, 30) having, substantially in the middle position, several fold lines (10) defining a bellows (100), the latter forming a connection zone (6, 7) between said lateral faces (2, 3). 3. Bag according to claim 1 or 2, characterized in that said bellows (100) extends substantially over the entire height (H) of the bag (1). 4. Bag according to one of the preceding claims, characterized in that said bag (1) has, before opening, a generally rectangular shape. 5. Bag according to one of claims 1 to 3, characterized in that said bag (1) has, before opening, a generally trapezoidal shape. 6. Bag according to one of the preceding claims, characterized in that it comprises, on at least one side (9), generally perpendicular to its height (H), an area of structural weakness (9a) adapted to facilitate, over the entire length of said side (9), the opening of said bag (1). 7. Method for manufacturing a sachet filled with powdered coffee or a similar product, comprising two side faces made of a material permeable to liquids, in particular filter paper, said sachet being closed and suitable for being placed on a door filter, said method comprising the following steps consisting in: a) continuously folding a strip (13) of porous and liquid-permeable material, in particular filter paper, so as to form two webs (20, 30), b) join (5), continuously, the free sides of the two sails (20, 30), c) form at least one bellows (100), on at least one of the sails (20, 30), d) join the two sails ( 20, 30) in a direction generally perpendicular to the direction of advance of the strip (13) of filter paper so as to form the bottom of a bag (1), e) filling said bag (1) thus formed with a predefined quantity of coffee powder or similar product, f) close said sachet (1) on level u a closing zone (9) adjoining the junction zone (8) of the sails (20, 30) of an adjacent bag, characterized in that, during step c), said bellows (100) is formed to allow the mutual separation of said faces (2, 3) when the bag is open and so that the latter has a shape allowing it to be supported on the internal face (12) of a filter holder (11) .
PCT/FR2005/000285 2004-02-11 2005-02-09 Bag made of filter material and containing powdered coffee or the like WO2005080221A1 (en)

Applications Claiming Priority (2)

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FR0401354 2004-02-11
FR0401354A FR2866012B1 (en) 2004-02-11 2004-02-11 BAG IN FILTER MATERIAL CONTAINING COFFEE POWDER OR SIMILAR PRODUCT

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Publication number Priority date Publication date Assignee Title
JP2008150071A (en) * 2006-12-18 2008-07-03 Fuso Sangyo Kk Extraction bag manufacturing device, extraction bag manufacturing method and extraction bag
EP2311735B1 (en) * 2008-06-17 2013-04-24 Ishida Co., Ltd. Bag-making packaging machine

Citations (5)

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US4117647A (en) * 1976-10-20 1978-10-03 Rossi Alfred F Flexible pouch, forming, filling and sealing machine
EP0460383A1 (en) * 1990-05-18 1991-12-11 Pokka Corporation Powdered drink brewing bag
EP0829219A2 (en) * 1996-09-17 1998-03-18 MELITTA HAUSHALTSPRODUKTE GmbH & Co. Kommanditgesellschaft Paper filter inlay for filter holder
FR2769194A1 (en) * 1997-10-06 1999-04-09 Bertrand Bodenes Closed coffee filter filled with ground coffee
US20020046548A1 (en) * 2000-10-23 2002-04-25 Forman Harold M. Method and apparatus for making gussetted package

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Publication number Priority date Publication date Assignee Title
FR2686495B1 (en) 1992-01-24 1995-08-11 Cafes Cie Mediterraneenne PACKAGING FOR GROUND COFFEE FOR A COFFEE MACHINE USING FILTER.

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Publication number Priority date Publication date Assignee Title
US4117647A (en) * 1976-10-20 1978-10-03 Rossi Alfred F Flexible pouch, forming, filling and sealing machine
EP0460383A1 (en) * 1990-05-18 1991-12-11 Pokka Corporation Powdered drink brewing bag
EP0829219A2 (en) * 1996-09-17 1998-03-18 MELITTA HAUSHALTSPRODUKTE GmbH & Co. Kommanditgesellschaft Paper filter inlay for filter holder
FR2769194A1 (en) * 1997-10-06 1999-04-09 Bertrand Bodenes Closed coffee filter filled with ground coffee
US20020046548A1 (en) * 2000-10-23 2002-04-25 Forman Harold M. Method and apparatus for making gussetted package

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