EP0602203B1 - Sachet souple ferme et son procede de fabrication - Google Patents

Sachet souple ferme et son procede de fabrication Download PDF

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Publication number
EP0602203B1
EP0602203B1 EP93912540A EP93912540A EP0602203B1 EP 0602203 B1 EP0602203 B1 EP 0602203B1 EP 93912540 A EP93912540 A EP 93912540A EP 93912540 A EP93912540 A EP 93912540A EP 0602203 B1 EP0602203 B1 EP 0602203B1
Authority
EP
European Patent Office
Prior art keywords
sachet
sheets
substance
compacted
flexible sheets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93912540A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0602203A1 (fr
Inventor
Olivier Fond
Jean-Pierre Pleisch
Roland Rossier
Jacques Schaeffer
Alfred Yoakim
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.)
Societe des Produits Nestle SA
Nestle SA
Original Assignee
Societe des Produits Nestle SA
Nestle SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Societe des Produits Nestle SA, Nestle SA filed Critical Societe des Produits Nestle SA
Priority to EP93912540A priority Critical patent/EP0602203B1/fr
Publication of EP0602203A1 publication Critical patent/EP0602203A1/fr
Application granted granted Critical
Publication of EP0602203B1 publication Critical patent/EP0602203B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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
    • 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
    • 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/46—Applications of disintegrable, dissolvable or edible materials
    • B65D65/466—Bio- or photodegradable packaging materials
    • 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
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/36—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for bakery products, e.g. biscuits

Definitions

  • the invention relates to a closed flexible bag, intended to be extracted under pressure, containing at least one pulverulent substance for the preparation of a drink.
  • the invention further relates to the method of manufacturing said sachet.
  • pre-dosed and prepackaged portions of ground coffee for the preparation of espresso type coffee has the advantage of facilitating the operations of preparing coffee while guaranteeing a relative consistency of product quality.
  • portions currently come in three main forms.
  • the portions described in documents CH-A-636311, US-A-5012629 and EP-A-0272432, consist of two sheets of filter paper welded on their periphery and filled with ground coffee.
  • This solution has the disadvantage of having to overpack in a sealed manner in order to avoid any oxidation of the product during storage, which constitutes a higher cost and an additional operation for the consumer in order to obtain the desired coffee extract.
  • Document US-A-3,607,299 relates to a method of manufacturing a capsule made with nonwoven.
  • the portion consists of a sealed capsule opening in its extraction device under the effect of the introduction of the extraction fluid after deformation then successively perforation by points.
  • This capsule consisting of a sealed envelope forming a side wall and two walls, one of which constitutes the bottom of the cartridge and the other closes the opposite end of the cartridge, has the drawback of using different materials. 'packaging, some thick enough to give them semi-rigidity and can only be used in one direction, that is to say with the sealed side up with a perfectly adapted extraction device and the capsule and at his disposal.
  • document US-A-3607297 proposes sachets for the preparation of beverages in the form of a strip having filling cavities and a flat cover on the upper face. According to the author, these bags are intended for gravity flow and must be perforated on both sides by toothed plates, one of which is pushed by a spring.
  • the object of the present invention is to provide a closed flexible sachet containing roast and ground coffee and intended to be extracted under pressure for the preparation of a drink, said sachet not requiring any overpackaging and the extraction system being only suitable for sachet and not at the disposal of said sachet, because it is perfectly capable of being extracted in one direction or the other.
  • the present invention also aims to minimize the amount of material necessary for packaging a portion.
  • the invention relates to a flexible bag in the form of an individual portion consisting of two thin sheets and identical, of circular, oval or polygonal shape, leaving between them a space for the pulverulent substance and welded on their periphery so that said sachet is substantially symmetrical with respect to its welding plane.
  • the material used for the flexible sheets is impermeable to oxygen and water vapor.
  • the sachet is opened under the effect of the pressure rise alone during the injection of the extraction fluid.
  • the bag according to the invention is intended to be used as it is in the extraction device provided.
  • the bag according to the invention is symmetrical, the user can introduce it into the extraction system without paying attention to the direction of introduction.
  • the sachet is directly ready for use and does not require any prior preparation before putting it in the extraction system.
  • the two flexible sheets may however be slightly different from each other in shape and / or material, without detracting from the symmetry sought for the extraction.
  • the method and the device used for the extraction of sachets according to the invention may advantageously be of the type which is the subject of patent application EP No 92'107'548.7 or EP 92'112'364.
  • the upper face of the sachet is first opened by one or more perforating elements provided under the upper face of said device and the lower face is opened by localized ruptures consecutive to its deformation against the raised and hollow elements neither perforating nor sharp arranged on the underside of said device under the effect of the pressure rise alone during the injection of the extraction fluid. There is therefore no need to open the sachet beforehand or remove a fraction of the material before use. After use, said bag can be easily removed with a minimum of waste.
  • the inside diameter of the bag is preferably between 25 and 70 mm and the welded edge has a width of 3 to 15 mm.
  • the bag has a thickness at its center, preferably between 5 and 20 mm.
  • the dose of pulverulent substance contained can vary between 5 and 20 g, depending on its use.
  • the sachet is filled with a powdery substance for the preparation of a drink.
  • This substance is preferably roasted and ground coffee, but can also be tea, soluble coffee, a mixture of ground coffee and soluble coffee, a chocolate product or any other edible dehydrated substance.
  • the outer shape of the bag is preferably circular, but can also be oval or polygonal from 4 to 10 sides with possibly rounded edges, or can be a combination of these three elements. Its section is preferably substantially flattened hexagonal, but may also have a lenticular shape.
  • the bag is provided with at least one lateral tab facilitating its installation. This tab is simply provided when cutting the bag.
  • the sachet consists of two sheets welded on their periphery, the welding being carried out on a flat face.
  • the two sheets will have been stretched beforehand (deformation in the plastic area) in order to avoid any random folds due to the volume of an originally flat material, either by means of compression in a matrix-piston assembly, either by means of the pressurization by a gas of the interior faces and / or possibly of a suction of the exterior faces in a mold of suitable shape at controlled temperature where the sheets are maintained planes at their periphery.
  • the material is simply pushed back as in the two previous examples, but in this case it is not retained on its periphery and will then have folds, more or less random resulting from the setting in volume of a surface plane.
  • the two sheets are preformed in a systematic and controlled manner and the welding is carried out, after filling of the pulverulent substance, according to a three-dimensional device.
  • a flat surface without stretching neither elastic nor plastic, one modifies the apparent diameter of the material compared to its real diameter. This excess material must be compensated by an adequate geometric shape in order to avoid any random folds.
  • the systematic and controlled molding takes place in a mold where, in any place, the principle of equality of the apparent diameter deployed and the actual diameter is ensured.
  • This is obtained in the mold by the creation of more or less high undulations and widening towards the outside.
  • the deformation is nonexistent or reduced because it is the reference plane.
  • these undulations increase in height and flare.
  • the corrugation is maximum at the weld edge. This undulation depends on the ratio between the diameter of the bag and the distance between the planes of the welding zone and that in the central zone of the bag, that is to say the half-depth of the bag.
  • the two sheets of the sachet undergo an equivalent volume setting and are positioned during the welding, after filling, so as to be superposed perfectly on one another.
  • the welding area of the two sheets is therefore in the form of a circular corrugated strip.
  • This molding of the sheets is ensured, either by means of compression in a matrix-piston assembly, or by means of the pressurization by a gas of the interior faces and / or of a suction of the exterior faces. In both cases the mold has the desired relief.
  • the bag can have bellows, on one or more sides.
  • the bellows resulting from a folding prior to the welding of the sheets, make it possible to give a defined volume to the assembly while eliminating random folds.
  • the bags according to this latter embodiment can be manufactured in a manner known per se.
  • PET In the case where PET is used, it can be presented in a single layer combining the exterior and the central, especially if it is loaded with a layer of silicon oxide or if it is metallized.
  • the heat-sealing operation is facilitated by the insertion between the two sheets of an intermediate material, such as a food adhesive or a lining of plastic material.
  • This material can then form an additional thickness used to achieve a perfect seal during extraction.
  • the sachet according to the invention preferably contains a compacted substance, in the form of one or more pieces, the compaction rate being such that there is a reduction in volume compared to the non-compacted substance of between 10 and 60% .
  • This compaction is carried out so that the free space between the two flexible sheets and said substance represents between 1 and 20% of the total space between said flexible sheets. This free space is necessary to allow the coffee, when extraction, swell enough to ensure good extraction.
  • the compacted substance also has, on at least one of its faces, imprints forming water circulation channels of suitable shape (for example cross, circle) making it possible to improve the pre-wetting of the sachet and its extraction.
  • imprints forming water circulation channels of suitable shape (for example cross, circle) making it possible to improve the pre-wetting of the sachet and its extraction.
  • the shape of these imprints is chosen in relation to the extraction device used.
  • the compacted material can also have on at least one of its faces a concave or convex shape allowing, if necessary, to modify the compacting state during its positioning in the extraction device.
  • This shape is adapted to the layout of the extraction chamber and can be used to ensure good sealing of the sachet in the peripheral zone of the injection, ie between the upper face of the extraction chamber and the upper sheet. from the sachet.
  • the invention further relates to the method of manufacturing the sachet described above, in which two flexible sheets impermeable to oxygen and water vapor are deformed symmetrically by molding or by stretching, the quantity of pulverulent substance, said substance is deposited on one of the deformed flexible sheets and the two sheets are welded around their periphery.
  • the pulverulent substance is usually compacted during the manufacturing process.
  • the substance can be compacted after dosing and depositing it between the leaves of the sachet.
  • the substance is compacted then dosed and deposited between the sheets of the sachet.
  • one or more pieces are used to obtain the desired dose.
  • the compaction is carried out in a conventional manner, either by rollers or by a matrix-piston assembly, the physico-chemical parameters such as pressure, temperature, humidity of the coffee are adapted to the nature of the substance to be compacted.
  • the compacted substance can be partially or completely unpacked after closing the bag, for example by vibration or by any other known mechanical means.
  • a new compacting according to a pressure and an appropriate shape can still be carried out after the closure of the sachet.
  • the manufacturing operations can be carried out under the protection of a stream of inert gas free of oxygen, for example under nitrogen or CO2.
  • Certain plastics have the property of substantially resuming their initial shape after being temporarily deformed.
  • the bag according to the invention takes advantage of this property, together with an appropriate configuration of its extraction device.
  • the lips of the openings formed by the perforated parts of the sachet close around tapered perforating organs such as needles, ensuring the desired seal around this organ during extraction. After extraction, this same property effectively limits disgorgement of the sachet when released, including on the parts torn by the extraction system.
  • the flexibility of the walls of the bag is also used to allow, by its deformation without rupture in the extraction device, a reconfiguration of the volume of coffee contained. This controlled deformation then aims to improve the distribution of the flow in the coffee bed and consequently the quality of extraction.
  • the sachet consists of a combination of materials chosen according to an additional criterion of plasticity.
  • the deformability by elongation of its material must be sufficient to allow the shaping described above, but it must also, under the effect of the pressure of the liquid and at the location of the reliefs of the extraction device, rupture in the form of small tears without its elongation being too great.
  • the sachet (1) of circular shape comprises two sheets of flexible material (2) and (3) welded on their periphery (4) by heat sealing and containing ground roasted coffee (5) compacted for the preparation of a drink.
  • the compacted coffee has concave faces (35), the general shape of its section being a flattened octagon, while that of the sachet is hexagonal.
  • the purpose of the cylindrical blank (38) of the wafer is to avoid the undesirable presence of grains in the welding zone.
  • the bag (10), of FIG. 2 obtained from two molded sheets (6, 7) has undulations (8), (12) and (13) whose amplitude and the distance from one to the other increases from the flat face (11) towards the welding edge (9).
  • the coffee cake has a single concave face (35) and is not exactly symmetrical, but this difference is not related to the shape of the bag.
  • Fig. 3 clearly shows a molded sheet (7) with a flat bottom (11) and more and more pronounced corrugations as one approaches the outer edge. These corrugations have bumps (14) and hollows (15).
  • the sheet (6) After having deposited the roasted and ground coffee on the bottom (11), the sheet (6) is placed so as to have opposite the bumps of (6) facing the hollows of (7) and vice versa. We can then heat seal.
  • the bag (18) is square in shape with two bellows on the opposite sides.
  • the two sheets (20) and (22) are welded along the two bellows at (19, 23, 24, 25) and at the edges (26, 27) where the two sheets are simply joined.
  • the bellows make it possible to give a defined volume to the bag without the appearance of a random fold.
  • Fig. 6 shows a sheet (30) having undulations (31) on the edge, but also on the bottom (32). The manufacturing is done in the same way as for the bag of FIG. 2.
  • Fig. 7 shows the compacted substance alone (36). It has on at least one face areas (37) of water circulation in the form of channels allowing uniform pre-wetting and extraction.
EP93912540A 1992-07-06 1993-07-02 Sachet souple ferme et son procede de fabrication Expired - Lifetime EP0602203B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93912540A EP0602203B1 (fr) 1992-07-06 1993-07-02 Sachet souple ferme et son procede de fabrication

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP92111422 1992-07-06
EP92111422 1992-07-06
PCT/CH1993/000171 WO1994001344A1 (fr) 1992-07-06 1993-07-02 Sachet souple ferme et son procede de fabrication
EP93912540A EP0602203B1 (fr) 1992-07-06 1993-07-02 Sachet souple ferme et son procede de fabrication

Publications (2)

Publication Number Publication Date
EP0602203A1 EP0602203A1 (fr) 1994-06-22
EP0602203B1 true EP0602203B1 (fr) 1997-04-16

Family

ID=8209787

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93912540A Expired - Lifetime EP0602203B1 (fr) 1992-07-06 1993-07-02 Sachet souple ferme et son procede de fabrication

Country Status (16)

Country Link
US (2) US6025000A (es)
EP (1) EP0602203B1 (es)
JP (1) JP3332924B2 (es)
KR (1) KR100295123B1 (es)
AT (1) ATE151714T1 (es)
AU (1) AU667548B2 (es)
BR (1) BR9305572A (es)
CA (1) CA2111991C (es)
DE (1) DE69309868T2 (es)
DK (1) DK0602203T3 (es)
ES (1) ES2102034T3 (es)
FI (1) FI110180B (es)
GR (1) GR3024030T3 (es)
NO (1) NO307922B1 (es)
NZ (1) NZ252991A (es)
WO (1) WO1994001344A1 (es)

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US6966251B2 (en) 2002-01-10 2005-11-22 Nestec S.A. Automatic device for the extraction of a substance
WO2006005425A1 (en) 2004-07-09 2006-01-19 Nestec S.A. Apparatus with pressurised gas supply for preparing beverages
EP2082669A2 (en) 2008-01-25 2009-07-29 Nestec S.A. Hybrid apparatus for preparing beverages
WO2009153298A1 (en) 2008-06-20 2009-12-23 Nestec S.A. Capsule treatment apparatus
DE202009017911U1 (de) 2008-03-20 2010-07-29 Nestec S.A. System für die Herstellung eines Getränkes aus einer Wegwerf-Kapsel
US7966927B2 (en) 2005-03-29 2011-06-28 Nestec S.A. Standalone drink dispensing machine
WO2011131595A2 (en) 2010-04-20 2011-10-27 Nestec S.A. Container with thermal management
WO2012004133A1 (en) 2010-07-07 2012-01-12 Nestec S.A. Method for producing a beverage-ingredient capsule for the preparation of a beverage and apparatus
US8613246B2 (en) 2003-07-10 2013-12-24 Nestec S.A. Cap extraction device
US8850957B2 (en) 2008-04-22 2014-10-07 Nestec S.A. Modular assembly of a beverage preparation machine
US8915177B2 (en) 2008-08-08 2014-12-23 Nestec S.A. Beverage machine with carrying handle and configurable appearance and side functions
US9119503B2 (en) 2007-10-04 2015-09-01 Nestec S.A. Beverage brewing unit
US9398829B2 (en) 2007-10-04 2016-07-26 Nestec S.A. Integrated heater for a beverage preparation device
US9439533B2 (en) 2007-10-04 2016-09-13 Nestec S.A. Heating device with an integrated thermoblock for a beverage preparation machine

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BR9305572A (pt) 1995-12-26
AU4305193A (en) 1994-01-31
JPH06510264A (ja) 1994-11-17
FI110180B (fi) 2002-12-13
FI941013A (fi) 1994-03-03
NO940073D0 (no) 1994-01-07
FI941013A0 (fi) 1994-03-03
CA2111991A1 (en) 1994-01-20
US6025000A (en) 2000-02-15
KR100295123B1 (ko) 2001-09-17
CA2111991C (en) 2005-01-25
GR3024030T3 (en) 1997-10-31
NZ252991A (en) 1996-04-26
ATE151714T1 (de) 1997-05-15
EP0602203A1 (fr) 1994-06-22
NO940073L (no) 1994-01-20
NO307922B1 (no) 2000-06-19
DE69309868D1 (de) 1997-05-22
DK0602203T3 (da) 1997-09-08
AU667548B2 (en) 1996-03-28
DE69309868T2 (de) 1997-07-24
US20030077359A1 (en) 2003-04-24
JP3332924B2 (ja) 2002-10-07
ES2102034T3 (es) 1997-07-16
WO1994001344A1 (fr) 1994-01-20

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