EP2522597B1 - Single-lobe filter bag for infusion products. - Google Patents
Single-lobe filter bag for infusion products. Download PDFInfo
- Publication number
- EP2522597B1 EP2522597B1 EP12179351.7A EP12179351A EP2522597B1 EP 2522597 B1 EP2522597 B1 EP 2522597B1 EP 12179351 A EP12179351 A EP 12179351A EP 2522597 B1 EP2522597 B1 EP 2522597B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- length
- filter bag
- filter
- bag according
- seal
- 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.)
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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
-
- 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
Description
- This invention relates to a single-lobe or single-chamber filter bag for infusion products, such as tea, coffee, camomile and the like.
- The current market offers many different kinds of filter bags (or tea bags) for infusing the above mentioned products in water.
- The wide range of filter bags currently available is the result of the increasingly widespread use and popularity of filter bags among consumers, both in the home and in public places, which has led to a growing demand, especially from product distributors, for diversification of filter bag designs with a view to obtaining filter bags with improved properties in terms of product containment, ease of exchange with the liquid during infusion, shelf life, ease of final packaging, and so on.
- The two main designs currently used are the traditional single-lobe bags (usually with tie string and tag) and the now well-established two-lobe bags (also with tie string and tag, with or without individual overwrapper), whose characteristic feature is the larger surface area in contact with the liquid, which allows optimum extraction of the flavour from the infusion product).
- Over the years, both these designs have been made from different types of filter paper, including, more recently, biodegradable products.
- Similarly, the methods of closing the bag and simultaneously applying the string and tag (in designs where these are present) have been diversified according to production needs and, in some countries, legislative requirements: for example, the tie string, tag and filter bag may be closed and joined by a metal staple, by gluing, by a heat sealable "accessory stamp", by forming a stitch with the tie string itself or by using an adhesive tag.
- All of these have improved the quality of filter bags, the processes used to manufacture them (filter bag making machines) and end user satisfaction.
- Continuing its policy of product improvement, however, the Applicant has noticed that current filter bags, especially single-lobe bags (which this invention is concerned with in particular) have inherent shortcomings due to their shape which, precisely because they have a single chamber, tend to lack adequate three-dimensional, or volumetric, properties. The resulting disadvantages are that:
- the product is more constrained within the bag, with less room to expand during infusion, which means poorer quality infusions and longer infusion times;
- flattening causes the surfaces of the filter bags to become misshapen;
- the filter bags are more difficult to pack on account of possible movements during positioning.
- Flattening and movement of the filter bags may damage and reduce the overall quality of the product contained. Moreover, it should also be noticed that a loose (that is, single) filter bag will not stand erect for display purposes (during presentation and selection), unlike other types of filter bag, such as tetrahedral or pyramidal bags which, however, are much more expensive than single-lobe bags. In order to improve the stability of the bags, document
BE517130 - However, it is to be noted that the filter bag of
BE517130 BE517130 claim 1. - In this regard, it is also known document
GB446791 - Disadvantageously, such known embodiment is very difficult to realize since the folding of the lateral edges needs to be carried out very carefully (i.e. slowly) in order to avoid unaesthetic gibbosities or curls.
- For this purpose, the Applicant has created a single-lobe filter bag that overcomes the above mentioned disadvantages and whose structure, besides having the well-known features of customary single-lobe filter bags, is such as to provide a "stiffer" configuration that meets market requirements and, at the same time, improves the overall quality of the infusion and of the filter bag itself.
- Accordingly, the invention achieves this purpose by providing a single-lobe filter bag, in particular a single-lobe filter bag for infusion products comprising the technical characteristics described in one or more of the appended claims.
- The technical characteristics of the invention, with reference to the above aims, are clearly described in the claims below and its advantages are apparent from the detailed description which follows, with reference to the accompanying drawings which illustrate a preferred embodiment of the invention provided merely by way of example without restricting the scope of the inventive concept, and in which:
-
Figures 1 to 4 illustrate a first embodiment (not part of the present invention) of a single-lobe filter bag for infusion products in perspective, front, side, and bottom plan views, respectively; -
Figure 5 is a front view of a variant (not part of the present invention) of the filter bag ofFigures 1 to 4 ; -
Figures 6 to 10 illustrate a second embodiment (not part of the present invention) of a single-lobe filter bag for infusion products in perspective, front, right-hand side, left-hand side and bottom plan views, respectively; -
Figure 11 is a perspective view showing a variant (not part of the present invention) of the filter bag ofFigures 6 to 10 ; -
Figures 12 to 16 illustrate a third embodiment of a single-lobe filter bag for infusion products according to the invention in perspective, front face, rear face, side, and bottom plan views, respectively; -
Figures 17 to 20 are perspective, front, side, and bottom plan views, respectively, showing a detail of a variant of the third embodiment of the single-lobe filter bag ofFigures 12 to 16 ; -
Figure 21 is a perspective view illustrating a variant of the filter bag ofFigures 12 to 16 ; -
Figures 22 to 26 illustrate a fourth single-lobe bag in perspective, front face, side, rear face and top plan views, respectively; -
Figures 27 to 31 are, respectively, perspective, front face, side, rear face and top plan views illustrating a variant of the embodiment of the filter bag ofFigures 22 to 26 . - With reference to the accompanying drawings, in particular
Figures 1 ,6 ,12 and17 , the single-lobe or single-chamber filter bag is used for infusion products, such as tea, coffee, camomile and the like. - The filter bag, labelled 1 in its entirety, essentially comprises a
length 2 of filter material forming achamber 3 containing acharge 4 of the infusion product. Thelength 2 of filter material has a quadrangular shape defined by: - a first closed
top end 5 formed by a first join S1 between two first end edges of thelength 2; - a second closed
bottom end 7; - two
sides second ends length 2. - In the
filter bag 1, furthermore: - the two
sides second edges chamber 3; and - the
second bottom end 7 of thefilter bag 1 is closed by a second join S2 designed to form a stiffflat bottom surface 11 of thefilter bag 1 such as to define a stable base, with a substantially triangular cross section, for supporting thefilter bag 1. - Looking in more detail (with reference to
Figures 1 to 4 and12 to 21 ), in two embodiments of thefilter bag 1 thesecond end 7 comprises twosecond edges second bottom end 7 to directly define thebottom supporting base 11. - In a second embodiment (not part of the present invention, see
Figures 6 to 11 ), thesecond end 7 comprises twosecond edges bottom ends sides continuous bottom surface 11 defining the bottom supporting base. - More specifically, in the first embodiment illustrated in
Figures 1 to 4 (not part of the present invention), the ends of each of the twosecond edges sides chamber 3 to form a bevelled shape and are flattened on the corresponding area of theother edge base 11 at thesecond end 7. - In the third embodiment (see
Figures 12 to 16 ), thesecond edges second bottom end 7. Thesecond edges tab 12 protruding from thebottom supporting base 11 that is elastically compliant in such a way as to be folded onto thebottom base 11 to increase its stiffness. - According to the invention, the
tab 12 is folded and joined stably by a seal S4 to thebottom supporting base 11, thus forming a larger, stiff longitudinal area (seeFigures 17 to 20 ). - In the second embodiment illustrated in
Figures 6 to 10 (not part of the present invention), the two ends of each of thesecond edges first end 5, which is placed over the respective end of theother edge respective bottom ends sides 8 and 9 (initially open) of thelength 2 in such a way as to form a bevelled shape. - Each pair of ends of the
second edges sides 8 and 9: this creates a stiff lateral area of thelength 2 in order to form wide supporting shoulders for the closedbottom supporting base 11 of thefilter bag 1. - In this specific case, the seal S2 is simultaneously made also on the substantially central area of each
side chamber 3. - In addition to the above, the
filter bag 1 may be equipped, on thelength 2, with astring 13 joined by sealing one end of it to thelength 2 itself and the other end to atag 14 which is in turn removably associated with thelength 2 of filter material: this allows correct handling of thefilter bag 1 during infusion. - As regards other manufacturing aspects of the
filter bag 1, thelength 2 of filter material may consist of filter paper or biodegradable material (such as, by way of non limiting example, maize starch) or a non-biodegradable plastic material (such as polyethylene). - The joins on the
length 2 of filter material may consist of a first and a second heat seal S1 and S2, that is to say, made by heat sealing. - Alternatively, the two joins may consist of a first and a second seal S1 and S2 made using a suitable glue.
- In yet another alternative, the two joins on the
length 2 may consist of a first and a second ultrasound seal S1 and S2. - According to one possible variant applicable to all three embodiments described above, the
corners top end 5 of thelength 2 are bevelled symmetrically according to an angle α (seeFigures 5 ,11 and21 ). - The
tubular length 2, having an initially open tubular shape, may, at least in the first two embodiments described above, have a central join for closing the tube and consisting of a third join or seal S3. -
Figures 22 to 26 and27 to 31 illustrate another two alternative embodiments of thefilter bag 1 whose structural configuration is based on that of the embodiment illustrated inFigures 12 to 16 . - In this case, the
length 2 of filter material is provided with astring 13 joined, at one end, to thelength 2 itself by a knot A1 and, at the other end, to thetag 14 by a knot A2, thestring 13 being looped around thelength 2 and also around the elasticallycompliant tab 12 protruding from thebottom supporting base 11. - The
tag 14 may also be removably attached, for example by sealing, to thelength 2 of filter material. - To keep the
tag 14 in position on thelength 2, thetag 14 may have aslit 14f made at the top of it for engaging an end portion P of thestring 13 knotted to thelength 2 of filter material in such a way as to hold it against thelength 2. - In both solutions, that is to say, supported by the
string 13 or attached to thelength 2, thetag 14 is positioned at thetop 5 of the length 2 (where the closing seal S1 is located) and protrudes partially from thelength 2 itself. - The
filter bag 1 illustrated inFigures 27 to 31 differs mainly in thatcorners top end 5 of thelength 2 are bevelled symmetrically according to an angle α. - A filter bag made as described above therefore achieves the above mentioned purposes thanks to the special forms imparted to the connecting sides and to the bottom edges that close the length of filter material in such a way as to create a flat stiff base that provides: a
chamber 3 with a constant volume not only before use, housing the product comfortably and stably, and allowing the filter bag to stand erect on a supporting surface, but also during infusion, allowing the product to move and expand optimally within the chamber, thus guaranteeing an infusion of excellent quality and reduced infusion times. - The invention described above is susceptible of industrial application and may be modified and adapted in several ways without thereby departing from the scope of the inventive concept as defined by the claims. Moreover, all the details of the invention may be substituted by technically equivalent elements.
Claims (13)
- A single-lobe filter bag for infusion products, the filter bag (1) comprising a length (2) of filter material forming a chamber (3) containing a charge (4) of the infusion product; the length (2) comprising at least:a first closed top end (5) formed by a first join (S1) between two first end edges of the length (2);a second closed bottom end (7);two sides (8, 9) connecting the first end (5) and the second end (7) of the length (2),the two sides (8, 9) connecting the first and second ends (5, 7) being at least partly folded onto each other to form a fold towards the inside of the chamber (3); characterised in thatthe second bottom end (7) of the filter bag (1) is closed by a second join (S2) designed to form a stiff flat bottom surface (11) of the filter bag (1) such as to define a stable base for supporting the filter bag (1), characterised in that the filter bag (1) has a substantially triangular vertical cross section, the second end (7) having two second edges (7a, 7b) defining a central extension of the second bottom end (7), said second edges (7a, 7b) being positioned face to face with each other and being joined in such a way as to form a tab (12) that protrudes from the bottom supporting base (11) and that is elastically compliant in such a way as to be folded and joined stably, by a seal (S4), to the bottom supporting base (11), thus forming a larger, stiff longitudinal area onto the bottom supporting base (11) to increase its stiffness.
- The filter bag according to claim 1, characterised in that it comprises, on the length (2), a string (13) joined by sealing one end of it to the length (2) itself and the other end to a tag (14) which is in turn removably associated with the length (2) of filter material.
- The filter bag according to claim 1, characterised in that the length (2) of filter material is made from filter paper.
- The filter bag according to claim 1, characterised in that the length (2) of filter material is made from biodegradable material.
- The filter bag according to claim 1, characterised in that the length (2) of filter material is made from non-biodegradable plastic material.
- The filter bag according to claim 1, characterised in that the joins on the length (2) of filter material are defined by a first seal (S1) and a second seal (S2) made by heat sealing.
- The filter bag according to claim 1, characterised in that the joins on the length (2) of filter material are defined by a first seal (S1) and a second seal (S2) made using glue.
- The filter bag according to claim 1, characterised in that the joins on the length (2) of filter material are defined by a first seal (S1) and a second seal (S2) made by ultrasound sealing.
- The filter bag according to claim 1, characterised in that the corners (5a, 5b) of the first, top end (5) of the length of filter paper are bevelled symmetrically according to an angle (α).
- The filter bag according to claim 1, characterised in that the tubular length (2) has an initially open tubular shape, with a central join for closing the tube and defined by a third seal (S3).
- The filter bag according to claim 1, characterised in that it comprises, on the length (2), a string (13) joined, at one end, by a knot (A1) to the length (2) itself and, at the other end, by a knot (A2) to a tag (14), the string (13) being looped around the length (2).
- The filter bag according to claim 1, characterised in that it comprises, on the length (2), a string (13) joined, at one end, by a knot (A1) to the length (2) itself and, at the other end, by a knot (A2) to a tag (14), which is in turn removably attached to the length (2), the string (13) being looped around the length (2).
- The filter bag according to claim 12, characterised in that the tag (14) has a slit (14f) at the top of it for engaging an end portion (P) of the string (13) knotted to the length (2) of filter material in such a way as to hold it against the length (2).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000581A ITBO20060581A1 (en) | 2006-07-31 | 2006-07-31 | MONOLOBE BAG FOR INFUSION PRODUCTS. |
PCT/IB2007/001562 WO2008015509A2 (en) | 2006-07-31 | 2007-06-11 | Single-lobe filter bag for infusion products |
EP07766534A EP2046666B1 (en) | 2006-07-31 | 2007-06-11 | Single-lobe filter bag for infusion products |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07766534.7 Division | 2007-06-11 | ||
EP07766534A Division EP2046666B1 (en) | 2006-07-31 | 2007-06-11 | Single-lobe filter bag for infusion products |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2522597A1 EP2522597A1 (en) | 2012-11-14 |
EP2522597B1 true EP2522597B1 (en) | 2021-04-21 |
Family
ID=38623973
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12179351.7A Active EP2522597B1 (en) | 2006-07-31 | 2007-06-11 | Single-lobe filter bag for infusion products. |
EP07766534A Active EP2046666B1 (en) | 2006-07-31 | 2007-06-11 | Single-lobe filter bag for infusion products |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07766534A Active EP2046666B1 (en) | 2006-07-31 | 2007-06-11 | Single-lobe filter bag for infusion products |
Country Status (9)
Country | Link |
---|---|
US (1) | US20090263546A1 (en) |
EP (2) | EP2522597B1 (en) |
JP (1) | JP5167259B2 (en) |
CN (1) | CN101489888B (en) |
AR (2) | AR061331A1 (en) |
IT (1) | ITBO20060581A1 (en) |
RU (1) | RU2433078C2 (en) |
TW (1) | TWI395697B (en) |
WO (1) | WO2008015509A2 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITBO20060581A1 (en) * | 2006-07-31 | 2008-02-01 | Ima Spa | MONOLOBE BAG FOR INFUSION PRODUCTS. |
ITBO20070408A1 (en) * | 2007-06-11 | 2008-12-12 | I M A Ind Macchine Automatic H | MONOLOBE BAG FOR INFUSION PRODUCTS. |
ES2574157T3 (en) * | 2009-10-19 | 2016-06-15 | Eurofilters Holding N.V. | Vacuum cleaner filter bag |
EP2311360B1 (en) * | 2009-10-19 | 2014-09-03 | Eurofilters Holding N.V. | Vacuum cleaner filter bag |
IT1399862B1 (en) * | 2010-04-30 | 2013-05-09 | Ima Flavour S R L Ora Ima Ind S R L | VERTICAL AXIS MACHINE FOR THE PRODUCTION OF FILTER BAGS WITH INFUSION PRODUCTS |
WO2011148673A1 (en) * | 2010-05-25 | 2011-12-01 | 株式会社芳田商店 | Teabag and method for producing the same |
JP2012187278A (en) * | 2011-03-10 | 2012-10-04 | Fuso Sangyo Kk | Extraction bag and method for manufacturing the same |
FI9924U1 (en) * | 2011-09-29 | 2012-12-31 | Spotless Tea Bag Oy | Drink bag |
FR2985246B1 (en) * | 2011-12-28 | 2015-11-13 | Seb Sa | ASSEMBLY FOR PREPARING INFUSIONED BEVERAGE COMPRISING A DEPLOYABLE DOSET |
USD822336S1 (en) * | 2013-09-17 | 2018-07-10 | The Art Of Tea, Llc | Tea filter bag |
US9221584B2 (en) * | 2014-06-02 | 2015-12-29 | Smartland | Cereal bag with crumb collector |
USD779674S1 (en) | 2015-02-27 | 2017-02-21 | 3M Innovative Properties Company | Filter element having a connector |
USD792959S1 (en) | 2015-02-27 | 2017-07-25 | 3M Innovative Properties Company | Filter element having a pattern |
BR112017018381B1 (en) | 2015-02-27 | 2022-01-25 | 3M Innovative Properties Company | Flexible filter elements having an end outlet |
USD786443S1 (en) | 2015-02-27 | 2017-05-09 | 3M Innovative Properties Company | Filter element |
US20180029789A1 (en) * | 2016-07-28 | 2018-02-01 | (PBS) Professional Beauty Supply, Ltd. | Tea Bag with Accessible Opening |
Citations (1)
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US2085509A (en) * | 1934-06-28 | 1937-06-29 | Rambold Adolf | Bag |
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CH177440A (en) * | 1934-08-13 | 1935-05-31 | U C T Corp | Sachets for brewing material. |
GB446791A (en) | 1934-10-08 | 1936-05-06 | Seelig & Hille R | Improvements relating to bags and like containers |
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DE9318405U1 (en) * | 1993-12-01 | 1994-01-27 | Schoeller & Hoesch Papierfab | Filter material |
WO1995032905A1 (en) * | 1994-05-27 | 1995-12-07 | I.M.A. Industria Macchine Automatiche S.P.A. | Method for closing a filter bag for infusible products and for connecting a tagged thread thereto |
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AU2002360132B2 (en) * | 2002-10-18 | 2009-11-19 | Amcor Flexibles France | Resealable flexible package |
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US20060285779A1 (en) * | 2005-06-15 | 2006-12-21 | Golas Adam A | Re-sealable bag |
ITBO20060581A1 (en) * | 2006-07-31 | 2008-02-01 | Ima Spa | MONOLOBE BAG FOR INFUSION PRODUCTS. |
-
2006
- 2006-07-31 IT IT000581A patent/ITBO20060581A1/en unknown
-
2007
- 2007-06-11 EP EP12179351.7A patent/EP2522597B1/en active Active
- 2007-06-11 WO PCT/IB2007/001562 patent/WO2008015509A2/en active Application Filing
- 2007-06-11 EP EP07766534A patent/EP2046666B1/en active Active
- 2007-06-11 CN CN2007800269139A patent/CN101489888B/en active Active
- 2007-06-11 JP JP2009522348A patent/JP5167259B2/en active Active
- 2007-06-11 RU RU2009104072/12A patent/RU2433078C2/en not_active IP Right Cessation
- 2007-06-11 TW TW096120983A patent/TWI395697B/en active
- 2007-06-11 AR ARP070102536A patent/AR061331A1/en active IP Right Grant
- 2007-06-11 US US12/375,503 patent/US20090263546A1/en not_active Abandoned
-
2014
- 2014-09-01 AR ARP140103275A patent/AR097528A2/en active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2085509A (en) * | 1934-06-28 | 1937-06-29 | Rambold Adolf | Bag |
Also Published As
Publication number | Publication date |
---|---|
WO2008015509A2 (en) | 2008-02-07 |
AR097528A2 (en) | 2016-03-23 |
EP2046666A2 (en) | 2009-04-15 |
EP2046666B1 (en) | 2013-02-27 |
CN101489888B (en) | 2011-02-02 |
TW200815255A (en) | 2008-04-01 |
TWI395697B (en) | 2013-05-11 |
CN101489888A (en) | 2009-07-22 |
RU2433078C2 (en) | 2011-11-10 |
JP5167259B2 (en) | 2013-03-21 |
RU2009104072A (en) | 2010-09-10 |
US20090263546A1 (en) | 2009-10-22 |
ITBO20060581A1 (en) | 2008-02-01 |
AR061331A1 (en) | 2008-08-20 |
EP2522597A1 (en) | 2012-11-14 |
WO2008015509A3 (en) | 2008-04-03 |
JP2009545498A (en) | 2009-12-24 |
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