EP0686574A1 - Sachet filtrant pour les produits à infuser, par ex. thé - Google Patents
Sachet filtrant pour les produits à infuser, par ex. thé Download PDFInfo
- Publication number
- EP0686574A1 EP0686574A1 EP95108354A EP95108354A EP0686574A1 EP 0686574 A1 EP0686574 A1 EP 0686574A1 EP 95108354 A EP95108354 A EP 95108354A EP 95108354 A EP95108354 A EP 95108354A EP 0686574 A1 EP0686574 A1 EP 0686574A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lobes
- bag
- lobe
- folded
- tubular element
- 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- Withdrawn
Links
- 238000001802 infusion Methods 0.000 title claims abstract description 20
- 240000004178 Anthoxanthum odoratum Species 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000000835 fiber Substances 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 238000004806 packaging method and process Methods 0.000 claims abstract description 7
- 230000000717 retained effect Effects 0.000 claims description 4
- 238000009958 sewing Methods 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 description 7
- 239000004416 thermosoftening plastic Substances 0.000 description 7
- 238000009835 boiling Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 241001122767 Theaceae Species 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000003978 infusion fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011859 microparticle Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
Images
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 a filter-bag for infusion products.
- filter-bags for infusion products such as tea, camomile, and the like, are known; they contain a single dose of product that must be immersed, at the time of use, in a suitable vessel containing boiling liquid.
- These filter-bags are usually obtained from a tubular element made of filtering material which is appropriately closed at its ends.
- filter-bags with two lobes have long become widespread; the lobes are formed by transversely folding the tubular element in half, conveniently so that when the filtering material cannot be subjected to thermal bonding, a sort of accordion-like fold forms on the bottom of the bag; sometimes, when the filtering material can be subjected to thermal bonding, said lobes are furthermore hermetically separated by means of one or two transverse bonding lines at the bottom and at the folding line.
- the two lobes are meant to contain respective doses of the infusion product, so as to increase the contact surface of said product with the liquid and thus obtain a better infusion.
- filter-bags of the above mentioned type are manufactured according to different methods which obviously require the use of suitable machines for packaging and filling; in any case, they have contraindications and drawbacks for various reasons.
- a known method for manufacturing said filter-bags entails forming individual elements from a roll of filtering material, for example filter paper that can be subjected to thermal bonding, each element being meant to form a bag. Said elements are folded in half and then along their lateral edges to form the bag which, after filling, is folded on the last side as well.
- a second known method entails folding said roll of filter paper longitudinally and forming thereon a series of transverse bondings that are meant to delimit the individual bags. Said bags are separated from each other after filling them and closing the last side.
- a known bag of the above mentioned type entails that the opposite ends of the tubular element, after overlapping the two lobes, be folded so as to form a trapezoidal or pagoda-like shape, so as to close and couple said lobes to each other.
- the filter-bag is sometimes closed by means of a staple or clip made of aluminum, which also retains one end of a cotton string that bears a label at the other end.
- the string of course, allows to dip the filter-bag in the boiling infusion liquid and to remove it therefrom.
- the filter-bags are joined by means of an aluminum staple to a continuous string carrying fixed thereon alternatively to said bags respective labels.
- the string is subsequently cut so as to form individual packages.
- the metal clip or staple that closes the bag entails several drawbacks and contraindications, mainly owing to the fact that the aluminum alloy has minor components that can easily oxidize, so that in the course of time the aluminum staple tends to oxidize and, in contact with the boiling infusion water, releases oxidized microparticles into it, microparticles that are then unwittingly ingested by the consumer.
- the staple may inadvertently separate from the filter-bag, fall into the beverage, and then be ingested with it.
- the string is fixed to the opposite ends of the tubular element, which is made of filter paper that can be subjected to thermal bonding and forms the two overlapping lobes, by means of respective thermoplastic tags, so as to wrap longitudinally around the outside surface of the bag; one of said thermoplastic tags also retains the label against the surface of a corresponding lobe and retains the edge of the opposite lobe, which protrudes slightly with respect to the edge of the other lobe for this purpose.
- the pulling of the label allows to separate the corresponding thermoplastic tag from the bag, so as to release the string. In the configuration for use, the two lobes of the bag are therefore divaricated.
- the bag according to this other solution also has various drawbacks and contraindications.
- the bag is considerably expensive because the filter paper can be subjected to thermal bonding, and therefore has a higher weight per unit surface than normal filter paper, and because of the excessive cost of the two thermoplastic tags for fixing the string to the label and to the bag.
- the filter paper can be subjected to thermal bonding, that is to say, that it has a layer of adhesive material for thermal bonding, and the fact that, to allow its adhesive layer to firmly fix the string to the bag, said tag must be subjected to thermal bonding at temperatures above 100 o C, entails that the package is not free from the risk of contaminating the beverage, since the heat-activated adhesive layers, during infusion, remain in direct contact with the boiling water.
- the aim of the present invention is to obviate the above mentioned drawbacks by providing a filter-bag for infusion products that is simple to manufacture, has a relatively low cost, and allows in particular to eliminate the above mentioned risks and dangers and to ensure optimum ecological characteristics as regards the product that is offered and the consumer's protection.
- another object of the present invention is to provide a filter-bag for infusion products that is simple in concept, easy to use, and assuredly functional.
- the present filter-bag for infusion products which is characterized in that it comprises: a tubular element made of a filtering material that cannot be subjected to thermal bonding and in which at least one median transverse folding line is formed, said line being adapted to define a first lobe and a second lobe meant to contain respective doses of an infusion product, said lobes being folded together in packaging position and being rigidly closed by folding at an angle the corners corresponding to the opposite ends of said tubular element, so as to form a trapezoidal profile, and subsequently fold an end flap of said first lobe over the corresponding edge of said second lobe; a handling string made of natural fiber rigidly coupled, at one end, to said folded flap of said lobes, by means of a seam for closing said lobes with natural fiber thread; and a label fixed at the free end of said handling string.
- the numeral 1 designates a filter-bag obtained from a tubular element made of a filtering material that cannot be subjected to thermal bonding, for example filter paper.
- the tubular element is formed, in a known manner, by joining the longitudinal edges of an appropriately folded sheet of said material; said joining is provided for example by folding and then scoring the sheet edges along the median longitudinal axis.
- a joining line 2 is formed transversely by cold-scoring in a median position on said tubular element. It is conveniently possible to provide two adjacent joining lines 2.
- the transverse joining lines 2 are adapted to form a first lobe and a second lobe, designated by the reference numerals 3 and 4 respectively, that are meant to contain respective doses of an infusion product, for example tea and the like. It should be noted that the first lobe 3 has slightly larger longitudinal dimensions than the second lobe 4.
- the lobes 3 and 4 of the bag are meant to be folded together by folding the tubular element transversely at the axis that lies in an intermediate region between the joining lines 2.
- the overlapping lobes 3 and 4 are closed hermetically, at the opposite ends of the tubular element, by folding the corners 5 of the bag in a pagoda-like shape and by subsequently folding an end flap 6 of the first lobe 3 over the edge of the second lobe 4.
- the folding of the flap 6 partially affects the corners 5.
- a cotton string 7 is arranged along the median longitudinal axis of the tubular element and wraps around the bag 1.
- the string 7 is fixed to the bag, at its opposite ends, by means of a seam 8 formed at the folded flap 6 and with a cotton thread.
- the seam 8 obviously closes the lobes 3 and 4 of the bag in addition to coupling them to each other.
- a conventional label 9 is fixed to the thread 7 proximate to one end.
- Said label 9 is preferably folded over the thread 7 and is rigidly coupled to it by means of a spot of glue 10.
- the bag thus produced is preferably packaged inside a corresponding envelope, not shown in the drawing.
- the filter-bag is removed from said envelope.
- the label 9 is then released, separating the end of the string 7 that is adjacent to said label from the seam 8.
- the string 7 can therefore extend to its full length and remains joined to the package only at one end 7a.
- the string 7 allows to handle the filter-bag for immersion in the boiling infusion liquid and removal therefrom.
- the free end of the string 7, which is adjacent to the label 9, can instead be extracted easily from the seam 8 since it is retained only on one side of the bag.
- Figure 2 is a view of a different embodiment of the filter-bag, in which the label 9 fully covers the free end of the string 7.
- the label 9 is partially inserted, in its packaging configuration, below the folded corners 5 and flap 6. Of course, in this case the label 9 is removed from its seat at the time of use.
- the label 9 instead of being folded back, that is to say, instead of being double as in figure 1, can also be single, and instead of being rigidly coupled to the string 7 with a spot of glue 10, it can be self-adhesive or can be fixed by means of a metal staple or of a seam formed with thread.
- the lobes 3 and 4 of the filter-bag can furthermore be separated by means of an accordion-like fold 11 formed transversely to the tubular element instead of by the scored lines 2.
- the seam 8 of the handling string 7 is preferably formed by means of a conventional sewing machine, of the type with an oscillating crochet spool tip, such as those used to attach buttons and the like.
- an oscillating hook 13 commonly termed “crochet”
- crochet cooperates with the needle 12 and is adapted to grip a loop formed by the sewing thread 14; said loop is formed in the ascending stroke of the needle 12 and is then crossed by said needle 12 during descent.
- the stitch thus formed is generally termed "chain-stitch”.
- the seam 8 is formed by means of a series of stitches, preferably at least six. It should be noted that for the sake of clarity in the drawing, the holes formed by said stitches have been shown as if they were separate; actually, said stitches substantially coincide, so that only two holes pass through the filter paper.
- the holes are formed with needles having a diameter of a few tenths of a millimeter, so that the stitching holes do not remain on the bag.
- the number of stitches that form the seam is related to the size of the thread, to the speed of the machine, and to the weight per unit surface of the filter paper.
- the described filter-bag achieves in an optimum manner the functionality and low-cost requirements typical of this type of products.
- the absence of metal staples or of thermoplastic tags for fixing the thread to the bag and to the label, and the use of normal filter paper that cannot be subjected to thermal bonding allow savings in material and avoid unnecessary additional costs.
- the filter-bag is closed without the aid of metal staples or thermoplastic or heat-activated adhesive materials.
- the lobes for containing the product are in fact formed exclusively by means of folds in the filter-paper element and are closed by means of said seam formed with natural-fiber thread.
- the filter-bag according to the invention used in the most disparate manners (with boiling water, with hot water, in microwave ovens) does not entail the danger of finding thermoplastic pollutants or metal oxide particles in the infusion, to the detriment of the consumer.
- the filter-bag which nonetheless preserves its practicality in handling as regards its use, therefore has exclusive ecological characteristics that have never before been achieved in the specific field and, for the protection of the consumer, compliance with the most demanding food safety and quality requirements of the offered product is ensured.
- the materials employed, as well as the shape and the dimensions, may be any according to the requirements.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITBO940272 | 1994-06-09 | ||
| IT94BO000272A ITBO940272A1 (it) | 1994-06-09 | 1994-06-09 | Sacchetto filtro per prodotti da infusione |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0686574A1 true EP0686574A1 (fr) | 1995-12-13 |
Family
ID=11339876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95108354A Withdrawn EP0686574A1 (fr) | 1994-06-09 | 1995-05-31 | Sachet filtrant pour les produits à infuser, par ex. thé |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0686574A1 (fr) |
| IT (1) | ITBO940272A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1164089A1 (fr) * | 2000-06-06 | 2001-12-19 | Teepack Spezialmaschinen Gmbh & Co. Kg | Sachet de thé et procédé pour fermer ce sachet avec une ficelle |
| WO2017184001A1 (fr) * | 2016-04-21 | 2017-10-26 | Knapik Sebastian | Jouet sur étiquette |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB450703A (en) * | 1935-03-07 | 1936-07-23 | Millie Patent Holding Company | Improved receptacle for holding tea, coffee and like substances |
| GB1157513A (en) * | 1965-08-31 | 1969-07-09 | Adolf Rambold | Infusion Bag and Method of Producing the Same. |
| DE3826911A1 (de) * | 1988-08-09 | 1990-02-15 | Loeschner Peter Dipl Oek | Aufgussbeutel mit wringvorrichtung, wringhilfe und verfahren zum verpacken von aufgussbeuteln mit wringvorrichtung |
| WO1991013580A1 (fr) * | 1990-03-14 | 1991-09-19 | Shomarla Pty Limited | Sachet d'infusion ameliore |
| DE9411639U1 (de) * | 1994-07-19 | 1994-11-03 | Rempfer, Gerhard, 71277 Rutesheim | Aus Papier o.dgl. gefalteter Beutel |
-
1994
- 1994-06-09 IT IT94BO000272A patent/ITBO940272A1/it not_active IP Right Cessation
-
1995
- 1995-05-31 EP EP95108354A patent/EP0686574A1/fr not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB450703A (en) * | 1935-03-07 | 1936-07-23 | Millie Patent Holding Company | Improved receptacle for holding tea, coffee and like substances |
| GB1157513A (en) * | 1965-08-31 | 1969-07-09 | Adolf Rambold | Infusion Bag and Method of Producing the Same. |
| DE3826911A1 (de) * | 1988-08-09 | 1990-02-15 | Loeschner Peter Dipl Oek | Aufgussbeutel mit wringvorrichtung, wringhilfe und verfahren zum verpacken von aufgussbeuteln mit wringvorrichtung |
| WO1991013580A1 (fr) * | 1990-03-14 | 1991-09-19 | Shomarla Pty Limited | Sachet d'infusion ameliore |
| DE9411639U1 (de) * | 1994-07-19 | 1994-11-03 | Rempfer, Gerhard, 71277 Rutesheim | Aus Papier o.dgl. gefalteter Beutel |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1164089A1 (fr) * | 2000-06-06 | 2001-12-19 | Teepack Spezialmaschinen Gmbh & Co. Kg | Sachet de thé et procédé pour fermer ce sachet avec une ficelle |
| JP2002002615A (ja) * | 2000-06-06 | 2002-01-09 | Teepack Spezialmaschinen Gmbh & Co Kg | 茶等の煎じ出し袋及び糸で煎じ出し袋を閉じる方法 |
| US6746699B2 (en) | 2000-06-06 | 2004-06-08 | Teepack Spezialmaschinen Gmbh & Co. Kg | Infusion bag with string |
| US7401450B2 (en) | 2000-06-06 | 2008-07-22 | Teepack Spezialmaschinen Gmbh & Co.Kg | Infusion bags, especially for tea, and a method of closing an infusion bag with a string |
| WO2017184001A1 (fr) * | 2016-04-21 | 2017-10-26 | Knapik Sebastian | Jouet sur étiquette |
Also Published As
| Publication number | Publication date |
|---|---|
| ITBO940272A0 (it) | 1994-06-09 |
| ITBO940272A1 (it) | 1995-12-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19960614 |