EP0860375A1 - Beutel mit einer einzigen Kammer - Google Patents

Beutel mit einer einzigen Kammer Download PDF

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Publication number
EP0860375A1
EP0860375A1 EP98200524A EP98200524A EP0860375A1 EP 0860375 A1 EP0860375 A1 EP 0860375A1 EP 98200524 A EP98200524 A EP 98200524A EP 98200524 A EP98200524 A EP 98200524A EP 0860375 A1 EP0860375 A1 EP 0860375A1
Authority
EP
European Patent Office
Prior art keywords
sachet
longitudinal edge
adjacent
expansion
seam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98200524A
Other languages
English (en)
French (fr)
Inventor
Wiebe Jan Jongsma
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.)
Sara Lee DE NV
Original Assignee
Sara Lee DE NV
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 Sara Lee DE NV filed Critical Sara Lee DE NV
Publication of EP0860375A1 publication Critical patent/EP0860375A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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 sachet filled with a material to be extracted by means of a liquid, such as tea or coffee, comprising a single chamber formed by a thin-walled material and filled with the material to be extracted, the chamber having two opposite sidewalls which are interconnected adjacent longitudinal edges of the sachet, the sachet comprising a first and a second longitudinal edge which are located opposite each other, the sachet being provided, adjacent the first longitudinal edge thereof, with an expansion pleat extending parallel to the first longitudinal edge and, adjacent the second longitudinal edge thereof, with a first sealing seam extending parallel to the second longitudinal edge and interconnecting the sidewalls.
  • the invention also relates to a method of manufacturing such sachet, wherein an elongated strip of band-shaped material is conveyed along a processing path and wherein, in the processing path, the band material is folded into approximately two equal parts along a folding seam extending in the longitudinal direction of the band material.
  • Such sachet and method are known from European patent application 0 148 153.
  • Such sachet has the advantage that it can be manufactured at high speed. After all, most sachets are provided with two separated chambers, which implies that during the manufacture of such sachets, decelerating and accelerating movements have to be performed with the band-shaped material from which the sachets are manufactured.
  • a drawback of the sachet described in European patent application 0 148 153, which sachet contains one chamber, is that the extraction of the contents of the sachet, during the preparation of a beverage suitable for consumption, takes place relatively slowly.
  • the object of the invention is to provide a solution to the problem mentioned hereinabove.
  • the sachet is characterized in that it is further provided with a second expansion pleat extending parallel to the second longitudinal edge and located adjacent the second longitudinal edge.
  • This second expansion pleat has as a result that the volume of the sachet can increase considerably when the sachet is immersed in a hot liquid. Accordingly, the material to be extracted, contained in the chamber, can expand generously.
  • the two expansion pleats provide the required increase of the volume of the sachet.
  • the invention hereby breaks the prejudice that sealing seams cannot be provided in the proximity of expansion pleats.
  • the known rectangular single-chamber sachet comprises three sealing seams, so that only one of the longitudinal edges is provided with an expansion pleat.
  • British patent application 2 053 668 likewise describes a sachet having a single chamber.
  • the sachet is manufactured from a band-shaped material whose opposite longitudinal edges are interconnected to create a tubular whole having two open ends. Next, one open end is sealed up.
  • two expansion pleats are arranged which are located opposite each other and extend in the longitudinal direction of the tubular part. The first sealing seam extends parallel between these expansion pleats. Next, the whole can be filled with the product to be extracted, after which the second open end can be sealed up.
  • British patent application 2 053 668 does not teach that one of the expansion pleats extends adjacent and parallel to a sealing seam. In connection to this, such sachet cannot be manufactured at high speed.
  • the band-shaped material For performing the various operations on the band-shaped material to obtain the sachet according to British patent application 2 053 668, the band-shaped material must be accelerated and decelerated at different locations along the processing path.
  • the sachet according to British patent application 2 053 668 must be filled via the short side. This means that the sachet must be rotated over 90° after the formation thereof. The rotation of the sachet involves a time-consuming, discontinuous movement.
  • the sachet according to the invention is characterized in that the expansion pleat has a V-shaped cross section comprising two legs, the length of each of the legs being greater than a fourth of the distance between the first and the second longitudinal edge.
  • the expansion pleat can provide a relatively great increase of the volume of the sachet's chamber.
  • the length of each of the legs approximately equals half the distance between the first and the second longitudinal edge.
  • a method for manufacturing such sachets is characterized in that in the processing path, the following steps are further performed:
  • reference numeral 1 designates a sachet according to the invention.
  • the sachet is filled with a material to be extracted or dissolved by means of liquid, in this case tea.
  • the sachet is manufactured from a thin-walled material, such as filter paper.
  • the sachet comprises two opposite sidewalls 4, 6, interconnected adjacent longitudinal edges 8, 10, 12, 14 of the sachet. Adjacent the first longitudinal edge 8, the sachet is provided with a first expansion pleat 16 extending parallel to the first longitudinal edge 8. Further, adjacent the second longitudinal edge 10, the sachet is provided with a first sealing seam 18.
  • the sealing seam 18 interconnects the longitudinal edges of the sidewalls 4 and 6, in this case at the top side of the sachet. This connection is in this example established by means of heat sealing.
  • the sidewalls 4 and 6 Adjacent their third longitudinal edge 12 and their fourth longitudinal edge 14, the sidewalls 4 and 6 are likewise interconnected by means of a second sealing seam 20 and a third sealing seam 22 respectively.
  • the sachet is further provided with a second expansion pleat 24 extending parallel to the second longitudinal edge 10 and located adjacent the second longitudinal edge 10.
  • the second expansion pleat 24 has a V-shaped cross section (see Fig. 2) with a first leg 26 and a second leg 28 converging towards each other in a direction towards the inside 30 of the sachet.
  • the first sealing seam 18 is located in the first leg 26.
  • the first leg is longer than the second leg, the first sealing seam 18 being located outside the space 32 enclosed by the two legs.
  • the first sealing seam is located outside the space 32 enclosed by the two legs 26, 28, the first sealing seam can readily be provided during the production process, by means of heat sealing. This does not involve the risk of the legs 26, 28 also being sealed together by the heat sealing operation.
  • FIG. 1 and 2 Another advantage of the sachet according to Figs. 1 and 2 is that it can be manufactured particularly quickly. This will be explained in more detail hereinbelow, with reference to Figs. 7.0-7.6
  • Figs. 1 and 3 show an alternative further elaboration of the sachet according to the invention.
  • the characterizing difference from Fig. 2 is that the legs 26 and 28 are approximately equally long.
  • the sachet is of symmetrical design, which may be an aesthetic advantage.
  • the first sealing seam is now inevitably located within the space 32 enclosed by the legs 26 and 28.
  • the consequence hereof is that the arrangement of this sealing seam during the production process is possibly more complicated than that of the sealing seam according to Fig. 2.
  • the legs 26 and 28 are not interconnected during heat sealing, only the first leg 26 can be pressed against the sidewall 4 during heat sealing. This implies that a sealing jaw should be manipulated in the space 32.
  • this sealing seam by means of priorly applied adhesive.
  • the adhesive can then for instance be applied to the first leg 26 and/or the sidewall 4.
  • the sidewall 4 and the sidewall 6 are subsequently pressed together adjacent the second longitudinal edge 10, possibly with heating, only the desired first sealing seam will be provided.
  • one-sidedly sealable paper is used. This involves the two legs 26, 28 being clamped between sealing jaws. The effect thus achieved is that after sealing, the two legs become loose from each other and that in this manner a symmetrical sachet is realized.
  • Figs. 4 and 5 show an alternative embodiment of the sachet according to the invention.
  • parts corresponding to those of Figs. 1-6 are provided with the same reference numerals.
  • the sachet according to Fig. 4 is not provided with a second expansion pleat 24 adjacent its second longitudinal edge 10.
  • the sachet does comprise the first expansion pleat 16.
  • the first expansion pleat 16 has a V-shaped cross section comprising two legs 34, 36. The length of each of these legs is greater than a fourth of the distance L 1 between the first longitudinal edge 8 and the second longitudinal edge 10.
  • the legs 34 and 36 approximately have an equal length L 0 .
  • the first expansion pleat when folded open, effects a relatively substantial increase of the volume of the sachet's content. This means that in use, the contents of the sachet can be extracted in a very quick and efficient manner.
  • the length L 0 of each of the legs 34, 36 approximately equals half the distance L 1 between the first longitudinal edge 8 and the second longitudinal edge 10.
  • a cross section of the sachet will assume the shape as shown in Fig. 6. This means in the first place an optimum increase of the volume of the sachet's content.
  • the cross section of Fig. 6 has a substantially triangular shape. From an aesthetic viewpoint, this is experienced as advantageous.
  • the two legs 34, 36 extend practically parallel to each other, as shown in Fig. 5. It is also possible to seal up the expansion pleat 16 in unused condition. However, this seal should then be so weak that it is torn loose in use, as a result of the expanding tea.
  • sachet may further comprise a cord having a label attached thereto.
  • This cord can for instance be attached adjacent the first or second longitudinal edge of the sachet.
  • attachment of the cord to the sachet adjacent the longitudinal edge 12 or 14 may also be considered, in view of the aesthetic shape of the sachet, as shown in Fig. 6.
  • a method will be described whereby the above-discussed sachets can be manufactured.
  • an elongated strip of band material 38 such as for instance filter paper, is unwound from a roll 40.
  • the band material 38 is then passed along a processing path 42 in the direction of the arrow 44.
  • the band material is subjected to various treatments.
  • a first step I of the processing path the band material is folded into approximately two equal parts along a folding seam 46 extending in the longitudinal direction of the band material (see also Fig. 7.1). This folding seam 46 later forms part of the first longitudinal edge 8 of the sachet.
  • the first expansion pleat 16 is provided in the band-shaped material.
  • the expansion pleat 16 extends parallel to the folding seam 46 and is located adjacent the folding seam 46 (Fig. 7.2). Also, in a step III, the second expansion pleat 24 is provided adjacent the side of the folded band-shaped material located opposite the folding seam 46. This second expansion pleat extends parallel to the side last mentioned (Fig. 7.3). Steps I, II and/or II can be performed successively as well as simultaneously by means of a tool arranged therefor.
  • step IV the band material is provided with equally spaced apart pairs of sealing seams 20, 22, directed perpendicularly to the folding seam 46 and interconnecting the folded parts 4, 6, to form between two adjacent sealing seams 20, 22 a chamber which is open on one side.
  • step V the chambers are filled with a material to be extracted. Then, in step VI, the chambers are sealed up, to be subsequently separated from each other in step VII, to produce a sachet according to Figs. 1-3. It is observed that in principle, during the performance of steps I-VII, the band-shaped material need not be decelerated or accelerated. All operations can be performed when the band material 38 is conveyed along the processing path 42 at a constant speed.
  • processing step III can of course be omitted. It is also possible that processing steps I and II are combined into one processing step. Processing step III can also be performed prior to processing step II. More in particular, processing step III is performed after processing step I and before processing step V.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
EP98200524A 1997-02-20 1998-02-19 Beutel mit einer einzigen Kammer Withdrawn EP0860375A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1005328 1997-02-20
NL1005328A NL1005328C2 (nl) 1997-02-20 1997-02-20 Sachet met een enkele kamer.

Publications (1)

Publication Number Publication Date
EP0860375A1 true EP0860375A1 (de) 1998-08-26

Family

ID=19764460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98200524A Withdrawn EP0860375A1 (de) 1997-02-20 1998-02-19 Beutel mit einer einzigen Kammer

Country Status (2)

Country Link
EP (1) EP0860375A1 (de)
NL (1) NL1005328C2 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008024941A1 (de) * 2008-05-23 2009-12-17 Anja Schulz Motiv-Aufbrühbeutel, insbesondere Teebeutel
US9783361B2 (en) 2013-03-14 2017-10-10 Starbucks Corporation Stretchable beverage cartridges and methods
US9877495B2 (en) 2015-01-09 2018-01-30 Starbucks Corporation Method of making a sweetened soluble beverage product
US10442610B2 (en) 2014-03-11 2019-10-15 Starbucks Corporation Pod-based restrictors and methods

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH209650A (de) * 1939-02-22 1940-04-30 Bentz & Sohn Melitta Aufgussbeutel für Tee.
GB789492A (en) * 1956-02-29 1958-01-22 Modern Coffees Inc Infusible coffee bag
EP0148153A2 (de) * 1984-01-05 1985-07-10 Tourpac Productions AG Beutel, Verfahren und Maschine zu dessen Herstellung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH209650A (de) * 1939-02-22 1940-04-30 Bentz & Sohn Melitta Aufgussbeutel für Tee.
GB789492A (en) * 1956-02-29 1958-01-22 Modern Coffees Inc Infusible coffee bag
EP0148153A2 (de) * 1984-01-05 1985-07-10 Tourpac Productions AG Beutel, Verfahren und Maschine zu dessen Herstellung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008024941A1 (de) * 2008-05-23 2009-12-17 Anja Schulz Motiv-Aufbrühbeutel, insbesondere Teebeutel
US9783361B2 (en) 2013-03-14 2017-10-10 Starbucks Corporation Stretchable beverage cartridges and methods
US10442610B2 (en) 2014-03-11 2019-10-15 Starbucks Corporation Pod-based restrictors and methods
US9877495B2 (en) 2015-01-09 2018-01-30 Starbucks Corporation Method of making a sweetened soluble beverage product
US10820607B2 (en) 2015-01-09 2020-11-03 Starbucks Corporation Soluble beverages with enhanced flavors and aromas

Also Published As

Publication number Publication date
NL1005328C2 (nl) 1998-08-24

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