WO2001034486A1 - Ensemble a compression pour sachet a infusion - Google Patents

Ensemble a compression pour sachet a infusion Download PDF

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Publication number
WO2001034486A1
WO2001034486A1 PCT/US2000/042114 US0042114W WO0134486A1 WO 2001034486 A1 WO2001034486 A1 WO 2001034486A1 US 0042114 W US0042114 W US 0042114W WO 0134486 A1 WO0134486 A1 WO 0134486A1
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WO
WIPO (PCT)
Prior art keywords
bag
support
region
filament
filter bag
Prior art date
Application number
PCT/US2000/042114
Other languages
English (en)
Inventor
Yuriy D. Chernov
Gennady I. Kleyman
Patricia L. Stokes
Boris Liberman
Original Assignee
Krumpet International, Llc
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 Krumpet International, Llc filed Critical Krumpet International, Llc
Priority to EP00991469A priority Critical patent/EP1244590A4/fr
Priority to AU32692/01A priority patent/AU3269201A/en
Publication of WO2001034486A1 publication Critical patent/WO2001034486A1/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 invention relates to a squeezing assembly adapted to enhance brewing of infusible product. More particularly, the invention relates to a filter bag for infusible products selected from the group consisting of tea, coffee, extracted beverages and the like.
  • a variety of such bags can generally be categorized as having four main types of filter bags. Common to all of these types is the fact that the increase in the contact area between the liquid and the infusion product accelerates the infusion process. Also, a method of brewing or preparing a beverage is rather uniform and, as is known, includes soaking a bag at the time of consumption in a container with water.
  • One of the traditional types of filter bag is a multi-layer bag made of porous material and having a substantially pyramidal shape.
  • This type of bag is flat and is limited in its capacitative volume, which on immersion in the water tightly holds the product.
  • a fundamental requirement for efficient brewing is an increased contact surface between the liquid and the infusion product particles that enables a greater unit utilization of the product.
  • the type of filter bag described above is in contrast with this requirement and is characterized by a slow volume growth and poor dissolution of the product. As a consequence, the infusion process is slow.
  • Another type of filter bag is basically similar to the above-described one and has two layers of face-to-face superimposed layers of porous paper and a number of folds along opposite sides. Although this structure is intended to improve a volume growth, in practice, it has been found that these folds allow only a partial swelling of the product when immersed in the water. Expansion of product particles is not nearly enough to allow the water to flow freely therethrough.
  • Still another type of filter bag envisages multiple sections, each of which contains the product, with or without lateral folds. Typically, the sections are densely packed one against the other, with little possibility of opening out at the bottom, and none in upper areas. Allowing the swelling, the product is pressed against the walls of each individual compartment with reciprocal contact with the walls of the neighboring compartment. As a result, the water flow is partially blocked by the compressed particles of the product.
  • a further structure of filter bag has been developed to allow it to assume two stable positions.
  • a generally flat position has been found to be particularly convenient for storage and for packaging in lots for sale. The other position is for three-dimensional use.
  • the internal volume in this structure is manifestly greater than in previously discussed structures.
  • the lower area of the bag still contains compressed product particles upon swelling during infusion.
  • the upper terminal section of filter bags is shaped with a polygonal profile generally of a trapezoidal development.
  • a thread is departably attached to the upper terminal section and is always anchored to a tag or label forming the pick-up element for the handling of the filter bag.
  • a user shakes a filter bag to enhance penetration of water through the product particles.
  • typically an infusion process is far from satisfactory and, regardless of numerous types of filter bag, the process is inefficient because only a small fraction of product particles is infused.
  • U.S. Patent No. 4,250, 990 to Casper discloses an extendable crossbar serving as a supporting surface for vertically displaceable filter bags As a result of a generally triangular shape, the supporting surface acts laterally upon the walls of filter bag, particularly, on an upper region thereof, as the bag is displaceable upward
  • a user has to literally punch the supporting surface acting, m turn, on the tea bag
  • U.S Patent No 5,797,243 illustrates a typical packaging assembly of filter tea bag having an outer bag which is stapled with a tag.
  • a filter bag having its upper region folded and attached to one end of thread is oscillato ⁇ ly displaceable along a vertical direction upon applying an external force to an outer end of the thread
  • an external force is applied only to one end of the thread so the bag's bottom is left unexposed to a squeezing action
  • a tea bag assembly having the increased contact surface between an infusion product and a squeezing filament allowing the bag's bottom to be squeezed in both lateral and vertical directions.
  • the tea bag includes a filter bag provided with at least one filament looping around the bag's bottom and attached to a lifting bar. Upon raising the lifting bar to a position, wherein an upper region of the filter bag presses against a supporting surface, a user may further squeeze the filter bag, so that its bottom is brought upwardly toward the supporting surface
  • a filter bag is able to move up due to vertically directed tension forces applied to a lifting member
  • This embodiment features at least one filament looping around the bottom of filter bag and having its upper end connected to the lifting member The filament allows the bag to be primarily exposed to vertical forces and secondarily to lateral forces fairly uniformly squeezing the product particles all over the bottom region of the bag.
  • a support providing a reliable limiting surface that acts downward upon the squeezed filter bag contributes to vertically directed tension forces, thereby enhancing a brewing process Having a variety of shapes, the support is sized to predominantly generate vertical forces, and only then it may act as a wedging surface generating lateral forces
  • Still another aspect of the invention relates to a particular circular arrangement of a filter bag that has a single continuous filament sewn along the bag's perimeter.
  • This particular embodiment provides a uniform pressing force that has its components directed in mutually perpendicular planes.
  • the invention also discloses a variety of outer bags used either individually or in combination with a support to provide a vertically directed force
  • a combination of such an outer bag and continuous filaments generates substantially uniform forces pressing against a lower bottom region of the filter bag.
  • Still another object of the invention is to provide a filter bag assembly having at least one filament attached to the bag's bottom so as to provide a vertical squeezing force uniformly acting upon a bottom region of filter bag.
  • Yet another object of the invention is to provide a filter bag assembly having a support generating a force directed opposite to a pulling force which is applied to the filter bag during brewing as it is gradually displaceable towards the support.
  • Another object of the invention is to provide a filter bag assembly having a structure enabling easy displacement of filter bag in a vertical plane.
  • a further object of the invention is to provide a filter bag having an annular shape enabling a continuous filament sewn along a perimeter of the bag to provide substantially uniform squeezing of product particles during its displacement towards a support.
  • FIG. 1 is an isometric view of a filter bag assembly according to the invention shown in a rest position.
  • FIG. 2 is an isometric view of filter bag assembly of FIG. 1 shown in a squeezing position.
  • FIG. 3 is an isometric view of filter bag assembly according to another embodiment of the invention having a flat support surface.
  • FIG. 4 is an isometric view of filter bag assembly of FIG. 3 shown in a squeezing position.
  • FIG. 5 is an isometric view of filter bag assembly according to still another embodiment of the invention.
  • FIG. 6 is an isometric view of filter bag assembly of FIG. 5 shown in a squeezing position.
  • FIG. 7 is a perspective view of the filter bag of FIG. 5.
  • FIG. 8 is a perspective view of the filter bag of FIG. 7 shown in a squeezing position.
  • FIG. 9 is an isometric view of still another embodiment of the invention showing an annular filter bag.
  • FIG. 10 is an isometric view of let another embodiment of the invention.
  • FIG. 1 1 is a perspective view if a filter bag substantially similar to embodiments shown in FIGS. 1-4 and shown in a brewing position.
  • FIG. 12 is a perspective view of a filter bag of FIG. 1 1 but shown in a squeezing position thereof.
  • FIG. 13 is a perspective view of a filter bag, which is an embodiment of the filter bag shown in FIGS 1 1-12, and is shown in a brewing position.
  • FIG. 14 is a filter bag of FIG. 13 shown in a squeezing position thereof.
  • FIG. 15 is a perspective view of another embodiment of the filter bag shown in FIG. 1.
  • FIGS. 16-18 are perspective views of still other embodiments of the filter bag shown in FIG. 1.
  • FIGS. 19-20 are perspective views of still further embodiments of the filter bag shown in FIG. 1.
  • FIG. 21 is an isometric view showing the filter bag of FIG. 1 provided with broader strips.
  • FIG. 22 is an isometric view illustrating still a further embodiment of the filter bag of FIG. 1.
  • FIG. 23 is an isometric view illustrating still another embodiment of the filter bag.
  • FIGS. 1-10 a filter bag assembly is shown and described m its vanous embodiments, where identical parts are denoted by the same numeral references.
  • FIGS. 1 and 2 illustrate a filter bag assembly 2 including at least one filament 12 wrapped about a bottom 11 of a filter bag 10.
  • the filament which in this case includes a single thread 12, allows the filter bag to be compressed in a vertical direction as a result of applying a pulling force to the upper end of the filament 12.
  • the filament surrounding the filter bag 10 provides a fairly uniform distribution of squeezing forces acting on all regions of the filter bag including a bottom region with the highest concentration of infusible product particles.
  • Enhancement of squeezing ability of the filter bag is particularly achieved by the thread 12 forming substantially equally sized and shaped parallel longitudinal regions 10', 10" and 10'" on the bag's peripheral surface. Insertion of the thread is simple and begins with attaching first base portions 14 of the thread to the bottom 11.
  • the bag's top region 16 meets the support 14 that may controllably extend over the entire width of the bag 10. Since the thread 12 attached to the lifting element 26 displaces the bottom 1 1 parallel to this support 14, further application of external pulling forces causes the filter bag to uniformly reduce its vertical dimension.
  • a squeezing action lasts until a pulling force applied by a user to the lifting element is balanced by an oppositely directed pressing force generated upon contact between the top region 16 and the support 14 Due to the uniform distribution of squeezing forces and the increased contact surface between the liquid and the infusion product particles, one obtains efficient unit utilization without applying excessive pulling forces
  • the support 14 may be made of any light material, such as plastic, and, in order to prevent contact between a user and the filter bag in its squeezing position, may be provided with a formation 14' It is contemplated within the scope of this invention to have the support that is extendable to cover differently sized containers. As shown in FIGS 1 and 2, the support 14 has a dome shape, wherein an inner cross-sectional area 14'" is sized to predominantly generate vertically directed forces.
  • each semi-circled edge 14" is equal to at least one third (1/3) of the total support length L Only, upon applying excessive pulling forces, the support can generate lateral forces that at the point of its origination are superfluous since the brewing or inflation process is substantially over.
  • the support 14 has a pair of holes 22, 24 traversed by the thread 12 which is attached to a lifting element 26
  • the latter can have different shapes and sizes.
  • the lifting element 26 has a U- shaped central portion flanked by identical lateral wmgs, so that a user can easily hold the central portion while lifting the element 26 to the squeezing position of the assembly.
  • the assembly operates m the following manner.
  • a user pulls the lifting member by one of his or her hands and, while holding his other hand on the formation 14', provides displacement of the bag and the support relative to each other.
  • the thread is extended at full length indicating that a beverage is ready.
  • a user can continue to pull the lifting element 26 until oppositely acting pressing and pulling forces reach a state of equilibrium.
  • the infusion's concentration generally is a function of the pulling force and duration of holding the filter bag in a reservoir filled with water.
  • a user intuitively can cease a squeezing action at any point during the infusion process, thereby achieving a desirable state of the beverage.
  • Using a lifting element it is easy to remove the once used filter bag from the reservoir, and, if the bag was not totally squeezed, it would be possible to reuse it.
  • FIGS. 3 and 4 another embodiment of a support 32 is shown.
  • the support 32 is flat.
  • a lateral projection 34 serves as a support for the user's finger.
  • FIGS. 1-4 can be used without the lifting element.
  • the thread 18 is formed with an upper loop 36 serving as a lifting element for the user.
  • the lifting element still can be used with the single continuous thread that has an upper end formed as a loop.
  • a pulling force P seen in FIG. 4 causes the swollen wet filter bag 10 to spread out along a sufficiently large surface of an inner face of the support 32. Once the user feels that the support is ready to swing, it is a reliable indication that the bag is fully squeezed and the infusion process is substantially finished.
  • FIGS. 5 and 6 illustrate a support 44 formed with a pair of displaceable resilient flaps 46, 48 that provide a squeezing action as the filter bag 10 moves upward. While this embodiment provides squeezing of the bag both in lateral and vertical directions, the threads 18 attached to the bottom enable the latter to be effectively squeezed. Also, a wedge action produced by the flaps 46 and 48 prevents reverse displacement of the bag as it upwardly advances to its squeezing position, as shown in FIG. 6.
  • the filter bag 10 has a single filament threaded through and anchored to the top 16. A free end of the filament further penetrates the bottom region 11, and after being threaded through the top 16, it is received between the lips 46, 48. Finally, the free end is attached to a tag that can serve as a lifting element.
  • FIG. 8 illustrates the filter bag in one of its squeezing positions. It is clear that penetration of the filter bag is a function of a pulling force applied to the lifting element. To facilitate a squeezing process, the support is made of material flexible enough to provide easy deformation of the lips 46, 48 during the bag's displacement.
  • FIG. 9 Another aspect of the invention is illustrated in FIG. 9 and relates to a filter bag 54 having an annular shape.
  • a broad strip 56 whose end is attached to a lifting element peripherally belts the bag 54.
  • the strip acts on the bottom 11 providing squeezing of the bag in a vertical direction in response to a pulling force.
  • a single strip having its free ends attached to the lifting element or tag is shown. However, it is understood that a number of strips are easily available for this embodiment.
  • the strip uniformly squeezes the bag's annular periphery and, as a consequence, brings the bottom 11 toward the top 16 after it has reached the support 44.
  • the upper stretch of the of the filament 18 is connected to a tag 92 that has an adhesive surface allowing a user to anchor the whole assembly to an outer surface of reservoir.
  • a tag 92 that has an adhesive surface allowing a user to anchor the whole assembly to an outer surface of reservoir.
  • a user may leave the filter bag in the reservoir for some time before he or she initiates a squeezing process.
  • FIGS. 11 and 12 illustrate the filter bag provided with the single strip 60 whose base portion 62 is located at a top 64. Free ends of the strip 60 extending towards and penetrating a bottom 66 of the filter bag belt a periphery 68 and are threaded through the top 64 at separate locations 70 and 72. Penetrating further through a support 74 the free ends are attached to a tag or lifting elements 76, thereby making the strip 60 continuous.
  • FIG. 12 illustrates a squeezing position of the filter bag shown in FIG. 11.
  • the strip 60 forms three regions 78, 80 and 82 on the filter bag thereby effectively eliminating a possibility of any part of the bottom 66 to remain unsqueezed.
  • the support 74 is formed with a pair of openings 59 traversed by the strip or strips 60.
  • this holes have a diameter which is sufficient to allow the support and the strip to be freely displaceable relative each other.
  • the hole 59 is further formed with a narrow slit 61 used by a user to arrest displacement of the support relative to the strip. This feature is particularly advantageous when a user wants to leave the filter bag in a container and a tag is not provided with an adhesive layer.
  • FIG. 13 illustrates two strips 84 attached to the filter bag 10. Each of the threads is threaded through the top 64 and the bottom 66 to further penetrate the top 64, thereby forming two loops around the bag's periphery. Upon penetrating a circular support 86, opposite ends of the strips are attached to the tag 76.
  • a squeezing position of the filter bag, as shown in FIG. 14, is similar to the one shown in FIG. 12 and is characterized by three adjacent regions 78, 80 and 82 formed during displacement of the bottom toward the top of the filter bag.
  • FIGS. 15 and 16 show a single strip 86 belting a periphery of the bag 10 substantially midway between the bag's opposite sides. The only difference between these two embodiments is that the strip 86 of FIG. 16 is affixed to an exterior of the bottom 66, whereas FIG. 15 illustrates the strip that is threaded through the bottom of the bag.
  • the strip 86 first attached to the bottom of the bag has its free ends penetrating the bag's top 5 the same location 90 to form a loop around the bag's periphery. The ends further penetrate the support and are finally attached to the tag, thereby forming a second loop .
  • FIGS. 19 and 20 illustrate a bell-shaped support 102 receiving the filter bag 10 in its squeezing position as shown in FIG. 20.
  • the bag filter is uniformly squeezed by vertically and laterally acting forces generated by an interior of the support.
  • a three-dimensional support, as shown in FIGS. 19 and 20, may have different shapes varying from triangular to circular to rectangular.
  • a strip can have different sizes. Increasing a width of the strip can translate to an increased reliability of the filter bag since there is less chance to tear it apart.
  • the broad filaments are glued to the bottom and walls of the filter bag.
  • FIG. 22 illustrates another embodiment of the filter bag 10 which has at least one filament attached thereto so that the bag is divided into two prismatic and one triangular regions.
  • the free end of the strip is attached to a lifting element. This construction allows peripheral regions of the bottom to be upwardly displaced toward a point located along an axis of symmetry that coincides with the upper stretch of the filament.
  • FIG. 23 illustrates the filter bag which is formed with a pyramidal top portion forming a pocket.
  • a filament is attached to the bag's bottom by its opposite ends and is adapted to be pulled upward by a user holding a tag.
  • the upward displacement of the bag's bottom is arrested once it is introduced into the pocket, which has a triangularly- shaped interior continuously squeezing the bottom 4 response to applying a pulling force to the tag.
  • the infusible product can be selected from a wide variety of beverages including, for example, tea, coffee, juices, soups and the like.
  • a material of filter bags can be made of a great variety of porous fabrics that can be permeable to provide efficient penetration of water through product particles contained in the filter bag. It is clearly seen that the inventive concept does not require modification of already existing tea bags and can be easily implemented in the existing equipment.

Abstract

Un sachet (10) filtre présente au moins un fil (12) formant une paire d'une première et d'une seconde boucles (18, 20), à distance entre elles, s'étendant entre la base (11) et le haut (16) du sachet filtre. Le sachet filtre présente en outre un support (14) traversé par le fil lequel forme une boucle au-dessus du support. La boucle est d'une dimension telle qu'un utilisateur puisse tirer le fil et le sachet vers le haut en direction du support, vers une position de compression dudit sachet filtre, la base de ce sachet étant alors soulevée vers le haut.
PCT/US2000/042114 1999-11-12 2000-11-13 Ensemble a compression pour sachet a infusion WO2001034486A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00991469A EP1244590A4 (fr) 1999-11-12 2000-11-13 Ensemble a compression pour sachet a infusion
AU32692/01A AU3269201A (en) 1999-11-12 2000-11-13 Infusion bag squeezing assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43860899A 1999-11-12 1999-11-12
US09/438,608 1999-11-12

Publications (1)

Publication Number Publication Date
WO2001034486A1 true WO2001034486A1 (fr) 2001-05-17

Family

ID=23741316

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/042114 WO2001034486A1 (fr) 1999-11-12 2000-11-13 Ensemble a compression pour sachet a infusion

Country Status (4)

Country Link
US (1) US20040091580A1 (fr)
EP (1) EP1244590A4 (fr)
AU (1) AU3269201A (fr)
WO (1) WO2001034486A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1273529A1 (fr) * 2001-07-06 2003-01-08 Paul Gerhard Dr.-Ing. Klar Sachet d'infusion
EP1468916A1 (fr) * 2003-04-19 2004-10-20 Häussler & Sauter KG Procédé pour attacher automatiquement un fil de traction à un sachet d'infusion
GB2420336A (en) * 2004-11-23 2006-05-24 Martin John Almond Infusion package with handle
EP1728734A3 (fr) * 2005-06-03 2006-12-20 Teepack Spezialmaschinen Gmbh & Co. Kg Sachet d'infusion
WO2007081266A1 (fr) * 2006-01-09 2007-07-19 Onecafe International Ab Sachet d’infusion pour boisson suspendu et jetable
US7523595B2 (en) 2005-10-12 2009-04-28 Haussier & Sauter Kg Method for attaching a draw string to an infusion bag automatically
WO2009079991A1 (fr) * 2007-12-21 2009-07-02 Torsten Burchard Sachet d'infusion pour du thé
NL2006760C2 (nl) * 2011-05-10 2012-11-13 Tako Mirakol B V Theezaksamenstel.
US9409685B2 (en) * 2012-08-30 2016-08-09 Francisco PAZ LUIS Cup for making tea on the go
GB2543571A (en) * 2015-10-23 2017-04-26 Milne Downie Donald Infusion device & method of making it
GB2556895A (en) * 2016-11-23 2018-06-13 Milne Downie Donald Infusion device

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US20070087083A1 (en) * 2005-10-18 2007-04-19 Riley William T Tea bag cozy
US20080017043A1 (en) * 2006-06-01 2008-01-24 The Coca-Cola Company Tea Stick Brewing Package and Method
RU2446085C1 (ru) * 2010-08-20 2012-03-27 Елена Аркадьевна Меринова Одноразовое сито для заваривания чая с системой отжима

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1273529A1 (fr) * 2001-07-06 2003-01-08 Paul Gerhard Dr.-Ing. Klar Sachet d'infusion
EP1468916A1 (fr) * 2003-04-19 2004-10-20 Häussler & Sauter KG Procédé pour attacher automatiquement un fil de traction à un sachet d'infusion
GB2420336B (en) * 2004-11-23 2007-12-12 Martin John Almond Infusion package
GB2420336A (en) * 2004-11-23 2006-05-24 Martin John Almond Infusion package with handle
EP1728734A3 (fr) * 2005-06-03 2006-12-20 Teepack Spezialmaschinen Gmbh & Co. Kg Sachet d'infusion
EP1770027A3 (fr) * 2005-06-03 2007-04-18 Teepack Spezialmaschinen Gmbh & Co. Kg Sac d'infusion
US7523595B2 (en) 2005-10-12 2009-04-28 Haussier & Sauter Kg Method for attaching a draw string to an infusion bag automatically
WO2007081266A1 (fr) * 2006-01-09 2007-07-19 Onecafe International Ab Sachet d’infusion pour boisson suspendu et jetable
WO2009079991A1 (fr) * 2007-12-21 2009-07-02 Torsten Burchard Sachet d'infusion pour du thé
NL2006760C2 (nl) * 2011-05-10 2012-11-13 Tako Mirakol B V Theezaksamenstel.
US9409685B2 (en) * 2012-08-30 2016-08-09 Francisco PAZ LUIS Cup for making tea on the go
GB2543571A (en) * 2015-10-23 2017-04-26 Milne Downie Donald Infusion device & method of making it
GB2556895A (en) * 2016-11-23 2018-06-13 Milne Downie Donald Infusion device

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Publication number Publication date
US20040091580A1 (en) 2004-05-13
EP1244590A1 (fr) 2002-10-02
EP1244590A4 (fr) 2004-11-03
AU3269201A (en) 2001-06-06

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