EP0996578A1 - Closed flexible sachet - Google Patents
Closed flexible sachetInfo
- Publication number
- EP0996578A1 EP0996578A1 EP98938628A EP98938628A EP0996578A1 EP 0996578 A1 EP0996578 A1 EP 0996578A1 EP 98938628 A EP98938628 A EP 98938628A EP 98938628 A EP98938628 A EP 98938628A EP 0996578 A1 EP0996578 A1 EP 0996578A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sachet
- sheets
- channel
- flexible
- faces
- 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.)
- Granted
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
- 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
- B65D85/808—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package for immersion in the liquid to release part or all of their contents, e.g. tea bags
Definitions
- the invention relates to a closed flexible sachet in the form of an individual portion provided for extraction under pressure, containing at least one pulverulent substance for the preparation of a beverage chosen from ground roast coffee, tea, instant coffee, a mixture of instant coffee and ground coffee, a chocolate-type product or any other dehydrated edible substance, consisting of two identical flexible sheets or of a single folded flexible sheet of circular, oval or polygonal shape, creating a space for the pulverulent substance between the two sheets or between the two faces of the folded sheet, and the two sheets or the two faces of _ the folded sheet are welded over their periphery so that the said sachet is substantially symmetrical with respect to its welding plane, the material used for the flexible sheets is impermeable to oxygen and to water vapour in order to preserve it, and the sachet is opened through the effect only of the rise in pressure which takes place upon injection of the extraction fluid.
- Patent WO 94/01344 already relates to a closed flexible sachet provided for extraction under pressure. With this sachet, at the time of extraction, one of the flexible sheets is perforated so as to allow the arrival of the extraction water.
- the drawback of perforating the sheet is that firstly it is necessary to guarantee the seal over the entire periphery of the sachet and, secondly, if the coffee in the sachet is not compacted, it is not always guaranteed that the said sachet will be perforated.
- the object of the present invention is to develop a closed sachet provided for extraction under pressure, in which it is unnecessary to guarantee the seal over the entire periphery of the sachet at the time of extraction and which makes it possible to avoid perforating one of the two flexible sheets.
- the present invention relates to a closed flexible sachet in the form of an individual portion provided for extraction under pressure, according to the preamble of Claim 1, and in which the two flexible sheets or the two faces of the folded sheet extend over one side of the said sachet beyond their welding line so as to provide, between the said sheets or between the two faces of the folded sheet, a channel which allows the arrival of the extraction fluid, the said channel being substantially perpendicular to the welding line on which it emerges.
- the presence of the channel between the two flexible sheets or between the two faces of the folded sheet makes it possible to insert therein a needle or any other sharp element allowing the extraction water to be supplied without perforating or tearing one of the flexible sheets.
- the needle or the sharp element it is also possible to envisage the arrival of the extraction water precisely at the entry of the said channel.
- the important thing is that, in the sachet according to the invention, the said sachet is not opened by inserting the needle or the sharp element to the extent of breaking the weld which closes the said sachet, but it is the pressurized water which initiates and completely opens the said weld of the sachet in order to allow the extraction liquid to enter.
- the water pressure is normally between 1 and 7 bar, i.e., in order to break the weld, a minimum pressure of water is required which allows the said weld to be opened up.
- the method and the device which are used for the extraction of sachets according to the invention may advantageously be of the type which partially forms the subject of EP Patent Application Nos . 92107548 and 92112364. "Partially” is understood to mean that the device is used not for the arrival of the water but for the exit of the coffee.
- the lower face of the sachet is opened by localized ruptures after its deformation against the non-perforating and non-cutting raised and hollowed-out elements present on the lower face of the device through the effect only of the rise in pressure which takes place upon injection of the extraction fluid.
- the sachet according to the invention may be of square, rectangular, oval and other shapes. If the sachet is of rectangular shape, it has a width of approximately 2 to 15 cm, preferably of the order of 4-
- the sachet has a thickness, at its centre, which is preferably between 5 and 20 mm.
- the measured amount of pulverulent substance contained may vary between 5 and 50 g, according to its use.
- the coffee is normally in the sachet in non- compacted form, which makes the said sachet relatively soft. It is, however, also possible to package compacted coffee.
- the depth of the arrival channel for the extraction fluid is normally from 3 to 10 mm and the diameter of this channel is also between 3 and 10 mm.
- the weld which closes the sachet normally has a depth of the order of 1 to 3 mm.
- the sheets are moulded either by means of compression in a die/piston assembly, or by means of pressurization of the inner faces by a gas and/or suction of the outer faces. In both cases, the mould has the desired relief.
- the sheets or the folded sheet may be made from flexible material such as aluminium with a thickness of from 5 to 40 microns or from plastic such as PET.
- the sheets will consist of a flexible, multi-layer material which is suitable for welding using customary methods whilst at the same time forming sufficient protection for the product against oxygen and water vapour.
- outer layer PET (normal, woven or non-woven) , PE, PP, PA, PS or paper
- high-grade barrier central layer aluminium with a thickness of between 5 and 20 microns, EVOH, PVDC, PET or PVA
- inner layer plastic, preferably PE or PP or OPP with welding lacquer.
- the seal is normally achieved at a temperature of between 180 and 250°C.
- PET-EVOH-PE or PET-aluminium-PE PET-EVOH-PE or PET-aluminium-PE .
- biodegradable or water-soluble material is also possible as a single layer or in combination with other material.
- the sachet according to the invention is manufactured in the conventional manner by means of deformation by moulding or by drawing of the two flexible sheets or of the folded flexible sheet which are impermeable to oxygen and to water vapour, by measuring the amount of pulverulent substance onto one of the flexible sheets and by welding the two sheets or the two faces of the folded sheet over their periphery.
- the manufacturing operations are carried out under the protection of a stream of oxygen-free inert gas, for example under nitrogen or under C0 2 .
- the major advantage of the sachet according to the invention is that it allows the arrival of the extraction water via a small opening in the weld between the two flexible sheets or between the two faces of the folded sheet.
- the channel between the two flexible sheets or between the two faces of the folded sheet may, in one version, emerge directly on the welding line and the extraction fluid then has a single path via which to arrive at the sachet.
- an arrival channel which is subdivided, after the welding line of the two flexible sheets or of the two faces of the folded sheet, into at least two channels emerging at different points in the sachet: for example, in the case of a sachet for a single cup, two arrival channels are envisaged, and, in the case of a sachet for two cups, four arrival channels are envisaged.
- the sachet-extraction device it is a sharp element which is engaged into the water-arrival channel. So as to guarantee satisfactory insertion of the said sharp element into the channel, provision is made on each flexible sheet or on each face of the folded sheet for a break at the location of the said channel, allowing separation of the said flexible sheets or of the said faces of the folded sheet at the moment the extraction device is pricked. In another embodiment, it is also possible to envisage offsetting the two faces of the folded sheet at the location of the channel. As already mentioned above, it is not obligatory for the sharp element to engage in the channel .
- a tube which is either adhesively bonded, or crimped or laid in position is placed in the extension of the channel.
- the advantage of this tube is that it facilitates the insertion of the sharp element.
- the sachet according to the invention needs a satisfactory seal viz a viz the extraction fluid only at the location of the arrival channel .
- the consequence of this is that it facilitates the design of the extraction machine and therefore the latter' s cost.
- Fig. 1 is a plan view of a blank for manufacturing a sachet according to the invention
- Fig. 2 is a plan view of a blank in a second embodiment
- Fig. 3 is a diagrammatic plan view of the sachet during extraction
- Fig. 4 is a plan view of the sachet in a third embodiment
- Fig. 5 is a plan view of the sachet in a fourth embodiment
- Fig. 6 is a plan view of the sachet in a fifth embodiment ;
- Fig. 7 is a plan view of the sachet in a sixth embodiment .
- Fig. 8 is a plan view of the sachet in a seventh embodiment .
- the blank (1) is a multi-layer flexible sheet based on aluminium, polyethylene and polypropylene, having a thickness of the order of 40 microns and which is foldable along the line (4) .
- This sheet is thermoformed so as to create in it two cavities (2, 3) which make it possible to receive the ground roast coffee (40) therein.
- the flexible sheet is then folded along the line (4) and the two faces of the sheet are welded along the hatched lines (5, 42) .
- This welding provides a channel (6) between the two faces, allowing the insertion of the sharp element for sachet extraction.
- FIG. 2 there is a sheet (11) based on the same composite as for Figure 1, the said sheet being foldable along the line (12) . It includes cavities (13, 14) for the ground roast coffee (41) .
- the sheet is then folded over and welded along the hatched zones (20, 44) and a channel (15) is made in it which is subdivided into two channels (18, 19), allowing the water for extraction to arrive at two different points in the bed of coffee.
- the water arrives it breaks the weld in the zone (46) and thus allows sachet extraction.
- the breaks (16, 17) permit satisfactory opening of the channel (15) at the moment of extraction.
- the border (43) which goes beyond the weld (44) has a width of from 2 to 4 cm.
- Figure 3 shows a sachet (20) of more oval shape, with its measured amount of coffee (21) .
- the weld also appears in the form of hatched zones (22) .
- the welding zone (23) forms the separation between the channel (24) and the bed of coffee (21) .
- the sharp element (25) is displaced between its guides (26) from a set-back position to a position of engagement in the channel (24) . It is from this moment onwards that the extraction fluid arrives at a pressure of between 1 and 3 bar and breaks the weld (23) .
- FIG. 4 shows a sachet (30) which has a measured amount of coffee (31) with a weld (32) , the weld (33) forming the separation between the measured amount of coffee and the channel (31) for the arrival of the extraction fluid.
- a tube (34) In this channel, provision is made for a tube (34) , allowing satisfactory insertion of the sharp element.
- Figure 5 shows a sachet (47) obtained from a folded-over sheet, which gives two faces (56, 57) .
- This sachet is provided for a single cup of coffee with one measured amount of coffee (49) .
- the weld appears in the form of hatched zones (50, 51) .
- the welding zone (52) forms the separation between the channel (53) and the bed of coffee (49) .
- the channel (53) is subdivided into two channels (54, 55), so that the water satisfactorily moistens the coffee at two different locations.
- the offset of the two sheets (56, 57) allows satisfactory opening-up of the channel (53) to permit satisfactory positioning of the water-arrival channel on the said channel (53) .
- the extraction fluid arrives at a pressure of between 1 and 4 bar and breaks the weld (52) .
- the water then flows into the sachet and the pressure in the sachet increases, and the lower face of the said sachet presses against raised and hollowed-out elements represented diagrammatically at
- Figure 6 shows a sachet (48) which makes it possible to prepare two cups of coffee with a measured amount of coffee (69) and a measured amount (70) .
- the weld appears in the form of hatched zones (61, 62, 63) .
- the welding zone (72) forms the separation between the channel (71) and the bed of coffee (69) .
- the channel (71) is subdivided into three channels: the two channels (64, 65) firstly allowing the extraction water to progress onto the bed of coffee (69) and, secondly, a third channel (66) allowing the water to progress towards the second bed of coffee
- This channel (66) is then itself subdivided into two channels (67, 68) .
- the extraction fluid arrives via the channel (71) at a pressure of between 1 and 4 bar and breaks the weld (72) .
- the pressure in the sachet increases and the lower face of the said sachet presses against the raised and hollowed-out elements represented diagrammatically at (59, 60) until the said face tears at the locations of the said raised and hollowed-out elements so as to allow the coffee to flow into the two cups placed beneath the extraction device.
- Figure 7 shows a sachet (73) obtained from a folded-over sheet giving two faces (74, 75) .
- This sachet is provided for two cups of coffee with measured amounts of coffee (99, 100).
- the weld appears in the form of hatched zones (76, 77, 78) .
- the welding zone (81) forms the separation between the channel (86) and the beds of coffee (99, 100).
- the channel (86) subdivides into four channels: two channels (82, 83) for the bed of coffee (99) and two channels (84, 85) for the bed of coffee (100) .
- the offset of the two sheets (74, 75) allows satisfactory opening-up of the channel (86) to allow satisfactory positioning of the water-arrival channel on the said channel (86) .
- the extraction fluid arrives at a pressure of between 1 and 4 bar and breaks the weld (81) .
- the water then flows into the sachet and the pressure in the sachet increases and the lower face of the said sachet presses against the raised and hollowed-out elements represented diagrammatically at (79, 80) until the said face tears at the locations of the said raised and hollowed-out elements so as to allow the coffee to flow into the two cups placed beneath the extraction device.
- FIG 8 shows a sachet (87) which makes it possible to prepare two cups of coffee with one measured amount of coffee (101) .
- the weld appears in the form of hatched zones (88, 89, 90, 91).
- the welding zone (92) forms the separation between the channel (93) and the bed of coffee (101) .
- the channel (93) subdivides into three channels: the first two (94, 95) lead directly to the bed of coffee (101), and the third (96) conveys the water towards the bottom of the sachet.
- the water arrives at four points on the bed of coffee, which allows satisfactory moistening of the said coffee and satisfactory extraction from the sachet .
- the sachet according to the invention may be manufactured either from two flexible sheets or from a single folded flexible sheet.
- the advantage of this second solution is that it dispenses with one welding zone and thus reduces the risks of a defective seal in the sachet according to the invention.
- PVDC polyvinylidene chloride
- PE polyethylene
- PA polyamide
- PVA polyvinylacetate
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Apparatus For Making Beverages (AREA)
- Materials For Medical Uses (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Bag Frames (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9830078T SI0996578T1 (en) | 1997-07-15 | 1998-06-23 | Closed flexible sachet |
EP98938628A EP0996578B1 (en) | 1997-07-15 | 1998-06-23 | Closed flexible sachet |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97202190 | 1997-07-15 | ||
EP97202190 | 1997-07-15 | ||
PCT/EP1998/003826 WO1999003753A1 (en) | 1997-07-15 | 1998-06-23 | Closed flexible sachet |
EP98938628A EP0996578B1 (en) | 1997-07-15 | 1998-06-23 | Closed flexible sachet |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0996578A1 true EP0996578A1 (en) | 2000-05-03 |
EP0996578B1 EP0996578B1 (en) | 2001-11-14 |
Family
ID=8228557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98938628A Expired - Lifetime EP0996578B1 (en) | 1997-07-15 | 1998-06-23 | Closed flexible sachet |
Country Status (22)
Country | Link |
---|---|
EP (1) | EP0996578B1 (en) |
JP (1) | JP4049402B2 (en) |
AP (1) | AP1268A (en) |
AR (1) | AR015403A1 (en) |
AT (1) | ATE208732T1 (en) |
AU (1) | AU731750B2 (en) |
BR (1) | BR9811695A (en) |
CA (1) | CA2291234A1 (en) |
CO (1) | CO4840527A1 (en) |
DE (1) | DE69802537T2 (en) |
DK (1) | DK0996578T3 (en) |
EA (1) | EA001241B1 (en) |
EG (1) | EG22403A (en) |
ES (1) | ES2166181T3 (en) |
IL (1) | IL133094A (en) |
NO (1) | NO318045B1 (en) |
OA (1) | OA11357A (en) |
PT (1) | PT996578E (en) |
SI (1) | SI0996578T1 (en) |
TW (1) | TW412407B (en) |
WO (1) | WO1999003753A1 (en) |
ZA (1) | ZA986214B (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1000574A1 (en) | 1998-11-16 | 2000-05-17 | Societe Des Produits Nestle S.A. | Method and device for extracting a closed cartridge |
DE10215601B4 (en) * | 2002-04-10 | 2005-08-04 | Henkel Kgaa | Water-soluble container and process for its preparation and use |
US7018428B2 (en) | 2002-07-26 | 2006-03-28 | L'oreal | Process for the preparation of a dyeing composition for the dyeing of keratinous fibers from pressurized steam |
CH696968A5 (en) | 2003-04-01 | 2008-02-29 | Pepup S A | The flexible liquid container. |
FR2865646B1 (en) * | 2004-01-29 | 2009-02-13 | Oreal | PROCESS FOR THE PREPARATION OF A COMPOSITION FOR THE COSMETIC TREATMENT OF KERATINIC MATERIALS FROM PRESSURIZED FLUID AND PROTECTIVE AGENTS |
GB0423553D0 (en) * | 2004-10-22 | 2004-11-24 | Kraft Foods R & D Inc | Flexible pad for preparing a beverage |
PT3521207T (en) | 2010-07-22 | 2020-04-24 | K Fee System Gmbh | Portion capsule with barcode |
CN104176356A (en) * | 2014-09-03 | 2014-12-03 | 陈家山 | Double-layer seasoning packet |
JP6386681B1 (en) * | 2018-01-10 | 2018-09-05 | 日本紙工株式会社 | Manufacturing method of filter molded products |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2228374A5 (en) * | 1973-05-04 | 1974-11-29 | Tchakirian Auguste | Simple, cheap appts. for instant coffee prepn - ensuring full retention of aroma |
EP0002987A1 (en) * | 1977-12-30 | 1979-07-11 | Societe Generale Pour L'emballage | Process and machine for the preparation on the consumption spot of single doses of beverages, and product to be utilised in the process |
GB2215189A (en) * | 1988-03-02 | 1989-09-20 | Mars G B Ltd | Beverage brewing using microwave heating |
EP0602203B1 (en) | 1992-07-06 | 1997-04-16 | Societe Des Produits Nestle S.A. | Sealed flexible bag and method for making same |
-
1998
- 1998-06-22 TW TW087110002A patent/TW412407B/en active
- 1998-06-23 BR BR9811695-9A patent/BR9811695A/en active Search and Examination
- 1998-06-23 IL IL13309498A patent/IL133094A/en not_active IP Right Cessation
- 1998-06-23 EA EA200000126A patent/EA001241B1/en not_active IP Right Cessation
- 1998-06-23 PT PT98938628T patent/PT996578E/en unknown
- 1998-06-23 EP EP98938628A patent/EP0996578B1/en not_active Expired - Lifetime
- 1998-06-23 DE DE69802537T patent/DE69802537T2/en not_active Expired - Lifetime
- 1998-06-23 AP APAP/P/2000/001729A patent/AP1268A/en active
- 1998-06-23 WO PCT/EP1998/003826 patent/WO1999003753A1/en active IP Right Grant
- 1998-06-23 CA CA002291234A patent/CA2291234A1/en not_active Abandoned
- 1998-06-23 DK DK98938628T patent/DK0996578T3/en active
- 1998-06-23 AT AT98938628T patent/ATE208732T1/en not_active IP Right Cessation
- 1998-06-23 AU AU87282/98A patent/AU731750B2/en not_active Ceased
- 1998-06-23 SI SI9830078T patent/SI0996578T1/en unknown
- 1998-06-23 ES ES98938628T patent/ES2166181T3/en not_active Expired - Lifetime
- 1998-06-23 JP JP50626099A patent/JP4049402B2/en not_active Expired - Fee Related
- 1998-07-13 CO CO98039627A patent/CO4840527A1/en unknown
- 1998-07-13 ZA ZA9806214A patent/ZA986214B/en unknown
- 1998-07-14 EG EG81798A patent/EG22403A/en active
- 1998-07-15 AR ARP980103450A patent/AR015403A1/en not_active Application Discontinuation
-
2000
- 2000-01-13 NO NO20000173A patent/NO318045B1/en unknown
- 2000-01-14 OA OA1200000009A patent/OA11357A/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9903753A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP4049402B2 (en) | 2008-02-20 |
TW412407B (en) | 2000-11-21 |
DK0996578T3 (en) | 2002-02-11 |
EA001241B1 (en) | 2000-12-25 |
ZA986214B (en) | 2000-01-13 |
CA2291234A1 (en) | 1999-01-28 |
EG22403A (en) | 2003-01-29 |
AU731750B2 (en) | 2001-04-05 |
NO20000173L (en) | 2000-03-14 |
ES2166181T3 (en) | 2002-04-01 |
EP0996578B1 (en) | 2001-11-14 |
DE69802537D1 (en) | 2001-12-20 |
JP2002507953A (en) | 2002-03-12 |
IL133094A0 (en) | 2001-03-19 |
CO4840527A1 (en) | 1999-09-27 |
AR015403A1 (en) | 2001-05-02 |
NO318045B1 (en) | 2005-01-24 |
BR9811695A (en) | 2000-09-26 |
DE69802537T2 (en) | 2002-05-23 |
WO1999003753A1 (en) | 1999-01-28 |
NO20000173D0 (en) | 2000-01-13 |
AP2000001729A0 (en) | 2000-03-31 |
AP1268A (en) | 2004-04-02 |
EA200000126A1 (en) | 2000-06-26 |
SI0996578T1 (en) | 2002-04-30 |
PT996578E (en) | 2002-03-28 |
OA11357A (en) | 2003-12-17 |
IL133094A (en) | 2003-11-23 |
AU8728298A (en) | 1999-02-10 |
ATE208732T1 (en) | 2001-11-15 |
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