WO1996028365A1 - Sachet pour infusion - Google Patents

Sachet pour infusion Download PDF

Info

Publication number
WO1996028365A1
WO1996028365A1 PCT/GB1995/000565 GB9500565W WO9628365A1 WO 1996028365 A1 WO1996028365 A1 WO 1996028365A1 GB 9500565 W GB9500565 W GB 9500565W WO 9628365 A1 WO9628365 A1 WO 9628365A1
Authority
WO
WIPO (PCT)
Prior art keywords
package
infusion
drawstring
panels
sealed
Prior art date
Application number
PCT/GB1995/000565
Other languages
English (en)
Inventor
Alan George Kenney
Original Assignee
Tetley Gb Limited
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 Tetley Gb Limited filed Critical Tetley Gb Limited
Priority to PL95322213A priority Critical patent/PL180720B1/pl
Priority to JP8527345A priority patent/JPH11501888A/ja
Priority to NZ281994A priority patent/NZ281994A/en
Priority to PCT/GB1995/000565 priority patent/WO1996028365A1/fr
Priority to AU18976/95A priority patent/AU1897695A/en
Priority to RU97117073A priority patent/RU2141438C1/ru
Publication of WO1996028365A1 publication Critical patent/WO1996028365A1/fr

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
    • B65D85/812—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 with features facilitating their manipulation or suspension

Definitions

  • the present invention relates to infusion packages such as tea bags or coffee bags which contain a substance to be infused in a liquid.
  • Tea bags are sealed porous bags containing tea leaves which are placed in boiling water in a cup or tea-pot, for example, in order to make tea. It is usual, particularly in the case where the bags are placed in a cup or mug to remove the tea bags prior to the tea being drunk. However, when the tea bag is removed, it still contains liquid and thus tends to drip and leave liquid on any surface below it. This is undesirable in view of the strongly staining nature of tea (and other infusible substances) . It is usual therefore to squeeze the tea bag into a relatively dry state when it is removed, using a teaspoon, for example, to remove excess liquid from the tea bag. However, this method of removing the excess liquid from the tea bag is not particularly efficient. It is difficult to remove the liquid whilst ensuring that it all remains within the cup or mug, and it not always convenient or possible to have a teaspoon or other utensil readily to hand.
  • a number of methods have been proposed to overcome the above problem, and to provide an efficient and convenient method for removing the residual liquid from an infusion package such as a tea bag.
  • some form of device for applying an external pressure to the infusion package to squeeze out the liquid is provided.
  • a string is provided which is fixed to one side of the infusion package and passes through the package, so that after use the package may be compressed by pulling on the string whilst pressing down on the side of package from which the string exits in order to squeeze the opposite sides of the package together.
  • a piece of cardboard may be provided on the string with which to press on the infusion package.
  • the above device has a number of disadvantages. Firstly, if a card is not provided, then some other means such as the user's fingers must be found to press down on the infusion package, which is clearly not significantly any more convenient then simply using a tea spoon or other utensil to press on the package.
  • the card itself if provided, has a tendency to become saturated with the expelled liquid and thus may drip, thereby negating the desired effect.
  • the squeezing effect is solely between opposite points on the edge of the package, thus it is not very efficient and does not tend to remove all the residual liquid in the infusion package.
  • the location of the loop of string within the peripheral margin of the infusion package means the string must be accurately positioned in the peripheral margin and the margin then carefully sealed to form a channel, thus, this package is extremely difficult to manufacture automatically at high speed, without excessive wastage due to faulty packages.
  • the package is US-A-3415656 is not therefore particularly suited to commercial production.
  • a pair of drawstrings extend into the interior of the infusion package through a seal between the panels of the package at a first location on the peripheral margin of the package and extend across the interior of the package to an anchoring point at a generally opposed location on the peripheral margin of the package.
  • Each drawstring is anchored by being held between two sealed portions of the panels. Pulling the drawstrings in generally opposed directions pulls the walls of the package together, and thus causes the infusion package to collapse to express residual liquid therefrom.
  • an infusion package comprising two panels of porous material which are sealed together around a peripheral margin of the package to define an infusion containing compartment, the panels further being sealed together in at least one region which is spaced inwardly from the peripheral margin, and a drawstring which enters and exits the infusion containing compartment of the package via the peripheral margin and which is looped within the compartment around the sealed together region of the panels in such a way that pulling on end portions of the drawstring in opposite directions causes the package at least partially to collapse, thereby expressing liquid from the package.
  • the drawstring is used as in the prior art to pull the walls of the package together to collapse the infusion package to remove any residual liquid.
  • the drawstring extends internally through at least part of the tea containing compartment of the package.
  • an intermediate portion of the drawstring is looped loosely within the tea containing compartment around a further sealed region of the panels which is spaced inwardly from the sealed peripheral margin of the package. In this way it is envisaged that there may be less tendency to tear the bag when removing the liquid.
  • the panel to panel seal of the sealed region which retains the drawstring within the infusion containing compartment and facilitates the squeezing effect is stronger than a string to panel seal and thus the drawstring arrangement of the present invention may provide a somewhat improved squeezing action on the package.
  • the arrangement of the present invention potentially has manufacturing advantages in that it avoids the need for the intermediate portion of the drawstring to be anchored in the margin during sealing which requires relatively close tolerances for string positioning and could potentially damage the seal.
  • two or more spaced-apart, discrete sealed regions are provided between the panels. The drawstring can then be looped around both of these regions. This arrangement allows the infusion package to be compressed more efficiently when the ends of the drawstring are pulled.
  • the sealed region or regions are preferably in the form of discrete, small islands.
  • the islands preferably have rounded corners, but their overall shape can be any form.
  • the drawstring is a single length of string which enters and exits the infusion containing compartment at spaced apart locations on the peripheral margin and extends around two sealed regions within the package which are located at opposing corners of the package.
  • Alternative arrangements include providing four sealed together regions within the package with one region being adjacent each corner of the infusion containing compartment close to the peripheral margin, and the drawstring passing between each sealed region and the peripheral margin and crossing over itself before exiting the package, so as to form a loop around the edge of the infusion containing compartment.
  • the ends of the drawstring outside the infusion package are preferably provided with tags. This makes the drawstring easier to hold. Each end can be tagged separately, or a single tag may be provided which can be torn apart when it is necessary to pull on the drawstring. A tag having a size of similar dimensions to the infusion package may be used. In this case, the tag can be folded neatly against the package for packing and also provides a support for the infusion package when it has been used and is awaiting disposal. If a single tag for a drawstring having two ends is provided, the tag may be perforated or partially cut through along a centre line, so that it can be pulled apart more easily.
  • the sealing of the panels on the peripheral margin at the entry and exit points of the drawstring is preferably interrupted in order to avoid damage to the seal because of the presence of the string and to allow the string to slide more easily through the margin when in use, thereby lessening any risk of damage to the package.
  • the arrangement of the drawstring and sealed regions within the compartment is preferably symmetrical about a plane of symmetry passing through the centre of the infusion package. This provides a more efficient arrangement for expressing liquid from the infusion package.
  • the infusion package of the present invention could be any size or shape. It is envisaged that it will have greatest application in relation to infusible substances for the preparation of beverages. It is particularly applicable to tea bags and coffee bags, and as such would generally be of a rectangular, square or circular shape.
  • Figure 1 shows a first embodiment of the infusion package of the present invention
  • Figure 2 shows a variation of the infusion package shown in Figure 1,-
  • Figure 3 shows a second embodiment of the infusion package of the present invention
  • Figure 4 shows a third embodiment of the infusion package of the present invention.
  • a first embodiment of the infusion package of the present invention is shown generally at 1. It comprises a closed package or bag 2 formed from panels of porous material which are sealed together at the peripheral margin 3 to form a compartment 4 for containing the infusible substance 5 which is interposed between the panels.
  • the panels may be made of many suitable porous material used in manufacture of such packages, and will typically comprise paper.
  • the sealing of the panels is again accomplished by any suitable sealing method known in the art, for example heat sealing.
  • the infusible substance located within the compartment 4 may comprise for example 2.5 grammes of tea, or any other suitable infusible substance.
  • the panels are also sealed together at two regions 6 within the compartment 4 for containing the infusible substance which are spaced inwardly from the peripheral margin 3.
  • the sealed regions 6 within the compartment 4 are formed with rounded corners, but their overall shape is unimportant.
  • a drawstring 7 which lies between the panels of the package is provided in the package 1.
  • the drawstring enters the compartment 4 through the peripheral margin at one location 8 thereon, is looped around the sealed regions 6 near the opposed peripheral margin, and then exits the compartment 4 through the peripheral margin at a location 9 on the same side as the entry point 8, but spaced-apart therefrom.
  • the drawstring 7 has two free ends, which are secured to two layers of paper to form separate tags 10. These tags are optional, and the drawstring may also form a closed loop, without its ends being separated.
  • the seal in the peripheral margin at the entry point 8 and exit point 9 of the drawstring may be relieved or interrupted in order to avoid damaging the seal and to allow the string to slide through the margin in use.
  • the bag 2 is placed within the container containing hot water in which the substance is being
  • the bag 2 may be removed by means of the tags 10 and drawstring 7, and the residual liquid is expressed from the bag 2 by pulling on the tags 10 to pull the drawstrings in generally opposed directions.
  • the ends drawstring 7 should be pulled in opposed lateral directions as indicated by the arrows 11. Pulling on the drawstring causes the sealed-together regions 6 and the entry 8 and exit 9 points to move towards each other as the loop of string reduces in size. This action also acts to draw the walls of the compartment 4 inwards, such that the compartment 4 collapses, thereby expressing liquid from the compartment.
  • Figure 2 shows an alterative embodiment of infusion package of the present invention, in which the drawstring 7 outside the bag 2 is shorter, and the single tag 10 attached thereto is of a similar size to the bag 2. Both ends of the drawstring 7 are attached to the single tag 10, which is partially slit through along the centre line 12, such that in use the tag 10 may be torn apart and then used to pull on the drawstring in order to express the liquid from the bag.
  • the larger tag 10 can be folded neatly against the bag 2 for packing, and may also act as a support for the infusion package when carrying it after use to dispose of it.
  • FIG. 3 A further embodiment having two sealed regions 6 within the compartment 4 is shown in Figure 3.
  • the drawstring 7 enters and exits compartment 4 at opposed locations 8, 9 on the peripheral margin thereof.
  • Two sealed regions 6 are provided within the compartment 4 at the two corners of which the drawstring 7 does not enter or exit. Again, by pulling on the drawstring in generally opposed directions, the looped string between the sealed regions 6 and the peripheral margin 3 acts to cause the bag 2 to collapse.
  • FIG. 4 A further embodiment having four sealed regions 6 within the compartment 4 is shown in Figure 4.
  • a sealed region 6 is provided in each corner of the compartment 4, and the drawstring 7 is arranged so as to pass around each sealed region 6, between the sealed region and the peripheral margin 3.
  • the drawstring 7 crosses itself within the compartment 4, thus forming a complete loop around the edge of the compartment 4. Pulling on the ends of the drawstring 7 in opposed directions thus causes this loop to contract, thereby collapsing the bag 2.
  • the drawstring has a small single tag 10 connected to both ends thereof, which is partially cut through along the line 12.
  • the number of sealed regions 6 within the compartment 4 is not critical as long as the drawstring 7 can be effectively looped so as to allow the bag 2 to collapse efficiently in use.
  • the infusion package of the present invention can be efficiently manufactured on a large scale. As in
  • the infusible substance may be placed on a continuous web of porous material and another continuous web brought together therewith and the two webs heat sealed together e.g. by sealing rollers.
  • the drawstring should also be laid between the two individual webs prior to the heat sealing step, and the webs further heat sealed together at the region or regions within the package.
  • the completed package may then be cut from the web as in conventional tea bag manufacture.
  • the infusion package in the present invention is both efficient in use for removing residual liquid from the package, and is suitable for manufacture using a high-speed automatic process. There is also significantly reduced risk of the package itself becoming damaged when attempting to remove the liquid therefrom after use.

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

Abstract

Un sachet pour infusion (2) comporte au moins deux pièces en un matériau poreux fixées ensemble suivant leurs bords (3) pour former un compartiment (4) contenant une préparation pour infusion (5). Deux autres régions (6) des pièces situées à l'intérieur par rapport au bord (3) sont également jointes ensemble. Un fil de traction (7) entre en (8) et sort en (9) du compartiment (4) et il forme une boucle dans le compartiment (4) autour des régions jointes (6). Les extrémités du fil de traction (7) à l'extérieur du sachet pour infusion peuvent être pourvues de languettes (10). Lors de l'utilisation, une traction sur les extrémités du fil de traction (7) dans les directions opposées (11) provoque un affaissement, au moins partiel, du sachet, ce qui permet d'en presser le liquide résiduel.
PCT/GB1995/000565 1995-03-16 1995-03-16 Sachet pour infusion WO1996028365A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PL95322213A PL180720B1 (pl) 1995-03-16 1995-03-16 Torebka do zaparzania
JP8527345A JPH11501888A (ja) 1995-03-16 1995-03-16 浸出パッケージ
NZ281994A NZ281994A (en) 1995-03-16 1995-03-16 Infusion package, drawstring looped about sealed together panel regions within the compartment
PCT/GB1995/000565 WO1996028365A1 (fr) 1995-03-16 1995-03-16 Sachet pour infusion
AU18976/95A AU1897695A (en) 1995-03-16 1995-03-16 Infusion package
RU97117073A RU2141438C1 (ru) 1995-03-16 1995-03-16 Пакет для настаивания (варианты)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB1995/000565 WO1996028365A1 (fr) 1995-03-16 1995-03-16 Sachet pour infusion

Publications (1)

Publication Number Publication Date
WO1996028365A1 true WO1996028365A1 (fr) 1996-09-19

Family

ID=10767919

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1995/000565 WO1996028365A1 (fr) 1995-03-16 1995-03-16 Sachet pour infusion

Country Status (4)

Country Link
JP (1) JPH11501888A (fr)
AU (1) AU1897695A (fr)
RU (1) RU2141438C1 (fr)
WO (1) WO1996028365A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340821A (en) * 1998-08-24 2000-03-01 Nick Lansdown Infuser bag with squeezing means
WO2007081266A1 (fr) * 2006-01-09 2007-07-19 Onecafe International Ab Sachet d’infusion pour boisson suspendu et jetable
US10086992B2 (en) 2010-08-20 2018-10-02 Elena Arkadyevna Merinova Disposable strainer for infusing tea with a squeezing system
US10264910B2 (en) 2011-12-02 2019-04-23 Elena Arkadyevna Merinova Disposable strainer with a squeezing mechanism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU200379U1 (ru) * 2020-04-24 2020-10-21 Общество с ограниченной ответственностью "ДжейКолор" Пакет для приготовления напитков методом пролива

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2878927A (en) * 1958-04-02 1959-03-24 Oscar W Tippett Self-squeezing tea or coffee bag
US3415656A (en) * 1965-09-09 1968-12-10 Philip L. Lundgren Compressible infusion bag
WO1991013580A1 (fr) * 1990-03-14 1991-09-19 Shomarla Pty Limited Sachet d'infusion ameliore
WO1993019997A1 (fr) * 1992-03-27 1993-10-14 Tidy Tea Limited Emballages pour produits a infuser
WO1995010461A1 (fr) * 1993-10-12 1995-04-20 Unilever Plc Sachet d'infusion
WO1995010462A1 (fr) * 1993-10-12 1995-04-20 Unilever Plc Sachets d'infusion et leur fabrication
EP0652164A1 (fr) * 1993-11-09 1995-05-10 A.G. (Patents) Limited Sachet à infusion
WO1995013231A1 (fr) * 1993-11-08 1995-05-18 Unilever Plc Sachet pour infusion

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2878927A (en) * 1958-04-02 1959-03-24 Oscar W Tippett Self-squeezing tea or coffee bag
US3415656A (en) * 1965-09-09 1968-12-10 Philip L. Lundgren Compressible infusion bag
WO1991013580A1 (fr) * 1990-03-14 1991-09-19 Shomarla Pty Limited Sachet d'infusion ameliore
WO1993019997A1 (fr) * 1992-03-27 1993-10-14 Tidy Tea Limited Emballages pour produits a infuser
WO1995010461A1 (fr) * 1993-10-12 1995-04-20 Unilever Plc Sachet d'infusion
WO1995010462A1 (fr) * 1993-10-12 1995-04-20 Unilever Plc Sachets d'infusion et leur fabrication
WO1995013231A1 (fr) * 1993-11-08 1995-05-18 Unilever Plc Sachet pour infusion
EP0652164A1 (fr) * 1993-11-09 1995-05-10 A.G. (Patents) Limited Sachet à infusion

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340821A (en) * 1998-08-24 2000-03-01 Nick Lansdown Infuser bag with squeezing means
GB2340821B (en) * 1998-08-24 2002-07-17 Nick Lansdown Tea or coffee bag with squeezing means
WO2007081266A1 (fr) * 2006-01-09 2007-07-19 Onecafe International Ab Sachet d’infusion pour boisson suspendu et jetable
US10086992B2 (en) 2010-08-20 2018-10-02 Elena Arkadyevna Merinova Disposable strainer for infusing tea with a squeezing system
US10264910B2 (en) 2011-12-02 2019-04-23 Elena Arkadyevna Merinova Disposable strainer with a squeezing mechanism

Also Published As

Publication number Publication date
JPH11501888A (ja) 1999-02-16
RU2141438C1 (ru) 1999-11-20
AU1897695A (en) 1996-10-02

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