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

Definitions

• 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.
• filter bags 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
• the methods of closing the bag and simultaneously applying the string and tag 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.
• 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.
• 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.
• Figures 1 to 4 illustrate a first embodiment of a single-lobe filter bag for infusion products according to the invention in perspective, front, side, and bottom plan views, respectively;
• Figure 5 is a front view of a variant of the filter bag of Figures 1 to 4;
• Figures 6 to 10 illustrate a second embodiment of a single-lobe filter bag for infusion products according to the invention in perspective, front, right-hand side, left-hand side and bottom plan views, respectively;
• Figure 11 is a perspective view showing a variant of the filter bag of Figures 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 of Figures 12 to 16;
• Figure 21 is a perspective view illustrating a variant of the filter bag of Figures 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 of Figures 22 to 26.
• 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 a chamber 3 containing a charge 4 of the infusion product.
• the length 2 of filter material has a quadrangular shape defined by: a first closed top end 5 formed by a first join Sl between two first end edges of the length 2; a second closed bottom end 7; two sides 8, 9 connecting the first and second ends 5 and 7 of the length 2.
• the two sides 8, 9 connecting the first and second edges 5 and 7 are at least partly folded onto each other to form a fold towards the inside of the chamber 3; and the 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, with a substantially triangular cross section, for supporting the filter bag l.
• the second end 7 comprises two second edges 7a and 7b folded one over the other and joined along the second bottom end 7 to directly define the bottom supporting base 11.
• the second end 7 comprises two second edges 7a and 7b folded one over the other and joined at the bottom ends 8a, 8b and 9a, 9b of the sides 8 and 9 in such a way as to obtain a continuous bottom surface 11 defining the bottom supporting base.
• each of the two second edges 7a and 7b closer to the sides 8 and 9 are partially folded towards the inside of the chamber 3 to form a bevelled shape and are flattened on the corresponding area of the other edge 7a or 7b in such a way as to create the stiff supporting base 11 at the second end 7.
• the second edges 7a and 7b define a central extension of the second bottom end 7.
• the second edges 7a and 7b are folded face to face onto each other and joined in such a way as to form a tab 12 protruding from the bottom supporting base 11 that is elastically compliant in such a way as to be folded onto the bottom base 11 to increase its stiffness.
• the tab 12 may be folded and joined stably by a seal S4 to the bottom supporting base 11, thus forming a larger, stiff longitudinal area (see Figures 17 to 20).
• each of the second edges 7a and 7b are folded towards the first end 5, which is placed over the respective end of the other edge 7 a or 7b and at the respective bottom ends 8a, 8b and 9a, 9b of the connecting sides 8 and 9 (initially open) of the length 2 in such a way as to form a bevelled shape.
• Each pair of ends of the second edges 7a and 7b is reciprocally joined by a seal S 2 at the respective bottom areas of the connecting sides 8 and 9: this creates a stiff lateral area of the length 2 in order to form wide supporting shoulders for the closed bottom supporting base 11 of the filter bag 1.
• the seal S2 is simultaneously made also on the substantially central area of each side 8, 9 in order to also join the latter which, as stated, are initially open, in the configuration in which they are folded towards the inside of the chamber 3.
• the filter bag 1 may be equipped, on the length 2, with 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: this allows correct handling of the filter bag 1 during infusion.
• the length 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 Sl and S2, that is to say, made by heat sealing.
• the two joins may consist of a first and a second seal Sl and S2 made using a suitable glue.
• the two joins on the length 2 may consist of a first and a second ultrasound seal Sl and S2.
• the corners 5a and 5b of the first top end 5 of the length 2 are bevelled symmetrically according to an angle ⁇ (see Figures 5, 11 and 21).
• 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 and 27 to 31 illustrate another two alternative embodiments of the filter bag 1 whose structural configuration is based on that of the embodiment illustrated in Figures 12 to 16.
• the length 2 of filter material is provided with a string 13 joined, at one end, to the length 2 itself by a knot Al and, at the other end, to the tag 14 by a knot A2, the string 13 being looped around the length 2 and also around the elastically compliant tab 12 protruding from the bottom supporting base 11.
• the tag 14 may also be removably attached, for example by sealing, to the length 2 of filter material.
• the tag 14 may have a slit 14f made 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.
• the tag 14 is positioned at the top 5 of the length 2 (where the closing seal Sl is located) and protrudes partially from the length 2 itself.
• the filter bag 1 illustrated in Figures 27 to 31 differs mainly in that corners 5a and 5b of the first, top end 5 of the length 2 are bevelled symmetrically according to an angle ⁇ .
• 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.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Medical Preparation Storing Or Oral Administration Devices (AREA)
• Packages (AREA)
• Infusion, Injection, And Reservoir Apparatuses (AREA)
• Bag Frames (AREA)
• Wrappers (AREA)
• Apparatus For Making Beverages (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (2)

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ID=38623973

Family Applications (1)

Country Status (9)

Cited By (3)

Families Citing this family (13)

Citations (2)

Family Cites Families (27)

• 2006
  • 2006-07-31 IT IT000581A patent/ITBO20060581A1/it unknown
• 2007
  • 2007-06-11 EP EP12179351.7A patent/EP2522597B1/en active Active
  • 2007-06-11 CN CN2007800269139A patent/CN101489888B/zh active Active
  • 2007-06-11 AR ARP070102536A patent/AR061331A1/es active IP Right Grant
  • 2007-06-11 EP EP07766534A patent/EP2046666B1/en active Active
  • 2007-06-11 RU RU2009104072/12A patent/RU2433078C2/ru not_active IP Right Cessation
  • 2007-06-11 WO PCT/IB2007/001562 patent/WO2008015509A2/en active Application Filing
  • 2007-06-11 JP JP2009522348A patent/JP5167259B2/ja active Active
  • 2007-06-11 US US12/375,503 patent/US20090263546A1/en not_active Abandoned
  • 2007-06-11 TW TW096120983A patent/TWI395697B/zh active
• 2014
  • 2014-09-01 AR ARP140103275A patent/AR097528A2/es active IP Right Grant

Patent Citations (2)

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