WO1993015974A1 - Infusion packages - Google Patents
Infusion packages Download PDFInfo
- Publication number
- WO1993015974A1 WO1993015974A1 PCT/GB1993/000295 GB9300295W WO9315974A1 WO 1993015974 A1 WO1993015974 A1 WO 1993015974A1 GB 9300295 W GB9300295 W GB 9300295W WO 9315974 A1 WO9315974 A1 WO 9315974A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- package
- infusion
- handling member
- cutting
- Prior art date
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B29/00—Packaging of materials presenting special problems
- B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
- B65B29/04—Attaching, or forming and attaching, string handles or tags to tea bags
Definitions
- the present invention relates to infusion packages, for example tea or coffee bags, and in particular but not exclusively to infusion packages which may conveniently be used in making a single cup of beverage.
- Infusion packages of the so-called “one-cup” variety have a handling member (hereinafter called “a handling member of the kind described”) which in normal use hangs over the edge of a cup, mug or tea pot for example and by which the infusion package can be removed from the cup, mug or pot for disposal after infusion is complete.
- the member comprises a tag having a length of string or web attached at one end to the package and having a paper tab attached to the other end for gripping by a user.
- the tag may be attached to the package in several ways, for example by stapling or by being secured in a seam of the package.
- the fabrication of a tag and its attachment to the infusion package significantly complicates and slows down the manufacturing process and adds to the cost of the package.
- an infusion package having a handling member of the kind described formed integrally with the package.
- the handling member integrally with the package, the need for manufacturing steps to fabricate and attach a separate handling tag to the package is obviated. Furthermore it allows packages to be produced at a high production rate.
- the package is of the type comprising opposed sheets of porous tissue material joined to each other to define an infusion containing pocket therebetween, and the handling portion is formed from part of one or both of the sheets.
- the sheets are sealed, most preferably heat sealed, to one another around at least part of the periphery of the infusion containing pocket, and the handling member is formed as part of or as an extension of the sealed area. This provides a two-ply handling member which is substantially stronger than a single ply member.
- the handling member may be integral with the infusion containing pocket of the package at one of its ends only, but, more preferably, it is integral at both its ends so as to form a loop which can in use be looped over the handle of a tea cup, for example, to suspend the package in the cup.
- the handling member preferably extends around at least part of the periphery of the infusion containing pocket of the package, and most preferably around substantially its whole periphery.
- the loop may extend around the infusion containing pocket, and can be folded out of this position for use.
- the pocket may be of any desired shape, for example circular.
- the handling member is preferably integral with the pocket of the package over a substantial length of tissue.
- This length may, for example in the case of a circular infusion containing pocket extend over, for example, approximately 30°-45° (preferably around 30°) of the periphery of the pocket.
- the two sheets of the two-ply web are left unsealed to one another at least in the region where the handling member joins the infusion containing pocket. This is found to strengthen the attachment of the handling member to the pocket.
- the unsealed region may extend across the whole length of tissue connecting the handling member to the pocket, or merely across the ⁇ end region(s) of such. Other portions of the handling
- the 5 member may also be left unsealed to increase their k strength.
- narrow portions of the handling member for example narrow side portions of a looped handling member, may have portions left unsealed.
- the handling member may also be attached to the pocket by readily frangible means arranged at one or more discrete
- the pocket 30 join to the pocket may be stiffened, for example by folding over the edge of the handling member or by adhering a stiffening member thereto.
- This may be in the form of a tape or label, possibly being printed with advertising material or instructions.
- 35 also act to counter balance the package if the package is inserted in, for example, a mug and the loop is not placed over the handle of the mug.
- the invention provides an infusion package comprising an infusion containing pocket formed by opposed layers of tissue material which are sealed together at least around part of the periphery of the pocket, the layers of tissue material defining a handling member of the kind described which is integral at one or both ends thereof with the pocket.
- a cut extends around a major part of the periphery of the pocket so that the handling portion is looped and integral with the pocket at both of its ends.
- the end(s) of the cut defining the handling member terminate in an unsealed region of the web.
- An infusion package as described above may conveniently be produced by forming a two ply web of porous tissue material having a plurality of discrete infusion containing pockets formed therein, and cutting the packages with their handling members from the web.
- a particularly suitable method for producing the packages is described in our International Patent
- the invention provides a process for manufacturing infusion packages, comprising forming infusion containing pockets in a travelling two layer web of tissue material, the pockets being at least partly defined by sealed together regions of the tissue material, cutting the pockets from the web to provide individual packages, and, substantially simultaneously, cutting the web in such a way as to provide each package with an integral handling portion of the kind described of two ply tissue material.
- the cutting is performed by passing the web between co-rotating cutting rollers having recess means to accommodate the pockets of infusion and co ⁇ operating cutting means.
- the cutting means is formed by a ridge or lip raised around a respective recess provided on one of the rollers, which co-operates with an anvil surface formed on the opposed roller.
- the cutting roller may be provided with a first cutting edge which defines the outer periphery of the package and a second cutting edge, spaced inwardly of the first cutting edge for defining therewith the handle portion.
- the two-ply web is formed by heat sealing together two sheets of porous tissue material.
- the invention also provides, from a yet further aspect a cutting roller for use in a method in accordance with the invention comprising cutting means formed on the surface thereof for forming the outer periphery of an infusion package and substantially simultaneously therewith a handling member of the kind described.
- the cutting means comprises a first, outer cutting edge defining the outer periphery of the package and a second cutting edge, spaced inwardly therefrom, for defining said handling member with said first cutting edge.
- Fig. 1 shows a first infusion package embodying the invention
- Fig. 2 shows the package of Fig. 1 arranged in a cup
- Fig. 3 shows schematically a stage in the production of the infusion package of Figures 1 and 2;
- Fig. 4 shows a second infusion package embodying the invention
- Fig. 5 shows, schematically, production of packages as shown in Fig. 4.
- Fig. 6 shows Fig. 5 with certain components removed for clarity.
- an infusion package for example a tea bag, has a circular infusion containing pocket 2, and a handling member 3.
- the package 1 is formed from opposed sheets 4,5 of porous tissue material which are heat sealed together, as will be described below.
- the handling member 3 is in the form of a two-ply loop of tissue material which extends around the whole periphery of the pocket 2 , and which is attached thereto by a connecting length of tissue 6 at one end of the package. It is also connected to the pocket 2 by two smaller, readily frangible bridges 7 of tissue at the other end of the package.
- the bridges 7 may easily be broken, and the handling member 3 pulled away from the pocket 2, but still being attached by the connecting length of tissue 6.
- the pocket 2 may then be placed in a cup 8 with the handling member being hooked over the handle 8 of a cup 9 as shown in Fig. 2 to support the pocket 2 in the cup 8.
- Boiling water may then be introduced to the cup 8, and once the tea has infused sufficiently, the package 1 may be removed from the cup 8 and disposed of by means of the handling member 3.
- Fig. 3 shows an intermediate stage in the production of the infusion package 1 described above.
- the package 1 may conveniently be produced by the method disclosed in WO 90/13487 the disclosure of which is incorporated herein by reference.
- a travelling two ply web 10 is formed from respective webs of porous tissue material which are heat sealed to each other by co-rotating heat-sealing rollers to define infusion containing pockets 2 surrounded by heat sealed areas 11.
- the packages 1 are cut from the web 10 by means of co-rotating cutting rollers having co-operating cutting surfaces to define a desired shape of cut on the web 10.
- the cutting rollers are adapted so as to produce two cuts around each pocket 2, a first, outer cut 12 which defines the outer peripheral shape of the package, and a second, inner cut 13 which does not extend completely around the infusion containing pocket 2, and defines with the outer cut 12 the shape of the handling member 3.
- the inner and outer cuts are formed substantially simultaneously.
- FIG. 4 shows a second infusion package embodying the invention.
- This package 20 is generally similar to the first embodiment, except that it includes an unsealed region 21 of web i.e. a region in which the sheets of tissue material are not sealed together, which intersects the attachment region 22 between the handling member 25 and the pocket 26.
- the ends 23 of the cut 24 defining the handling member 25 terminate in the unsealed region.
- the unsealed region 21 also extends down the sides of the handling member 25.
- Fig. 5 shows schematically apparatus for producing packages as shown in Fig. 4.
- a first web 30 having discrete doses of infusion arranged thereon, and a second web 31 are fed between heat sealing rollers 32 to be joined together to form a travelling two-ply web 33 containing discrete infusion containing pockets 34.
- the rollers 32 are provided with a suitable profile (not shown) to produce the sealed regions 35 on the web 33.
- the rollers 32 are so profiled as to leave an unsealed oval region 36 around respective pairs of pockets 34.
- the shape of the region 36 is more clearly shown in Fig. 6, which shows the travelling web 33 with items of apparatus removed for clarity.
- roller 38 is a smooth anvil roller, but roller 37 has first and second raised cutting edges 39,40, surrounding respective recesses 41 arranged in pairs equispaced about the periphery of the roller.
- the rotation of the cutting rollers 37,38 is synchronised with that of the sealing rollers 32 such that the pockets 34 are accommodated within the recesses 41 and the cutting edges 39,40 cut around the pockets 34 to define the outer periphery of the package and the handling member 25.
- the outer cutting edge 39 forms a cut 42 defining the periphery of the package while the inner edge 40 forms the cut 24 which defines the handling member 25 with the cut 42.
- the cuts 24,42 are arranged to extend through the unsealed region 36 of the web so that the ends 23 of the cut 24 lie within the unsealed region. This increases the strength of attachment of the handling member 25 to the pocket 26.
- the narrow side portions of the handling member 25 are formed, at least in part, from an unsealed portion of the web to increase their strength.
- Promotional literature or instructions on how to use the package may be printed directly onto the web material or on to an adhesive label stuck thereto, for example in the triangular corner portions 28 of the handle member in the preferred embodiment described above.
- the edge 29 of the handle member 25 may be folded back on itself, or a tape applied therealong, to stiffen that part of the handling member. This may also act to counter-balance the weight of the infusion package if the handle member is not looped over the handle of a mug, for example.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9416469A GB2279327B (en) | 1992-02-14 | 1993-02-12 | Infusion packages |
AU34610/93A AU3461093A (en) | 1992-02-14 | 1993-02-12 | Infusion packages |
EP93903274A EP0625115A1 (en) | 1992-02-14 | 1993-02-12 | Infusion packages |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB929203197A GB9203197D0 (en) | 1992-02-14 | 1992-02-14 | Infusion devices |
GB9203197.0 | 1992-02-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993015974A1 true WO1993015974A1 (en) | 1993-08-19 |
Family
ID=10710427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1993/000295 WO1993015974A1 (en) | 1992-02-14 | 1993-02-12 | Infusion packages |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0625115A1 (en) |
CA (1) | CA2130091A1 (en) |
GB (2) | GB9203197D0 (en) |
WO (1) | WO1993015974A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2286816A (en) * | 1994-02-23 | 1995-08-30 | Unigreen Int As | Disposable filter bag |
GB2292554A (en) * | 1994-08-23 | 1996-02-28 | Andrew Leslie Walmsley | Infusion device |
EP1101710A1 (en) * | 1999-11-19 | 2001-05-23 | Grünland GmbH | Tea infusion bag |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2348201A (en) * | 1941-07-12 | 1944-05-09 | Nat Urn Bag Co Inc | Manufacture of infusion packages with handles |
US2362459A (en) * | 1942-02-07 | 1944-11-14 | Nat Urn Bag Co Inc | Infusion package and the manufacture thereof |
US2413686A (en) * | 1941-02-26 | 1947-01-07 | Millie Patent Holding Co Inc | Infusion package with handle and the method of manufacturing same |
FR1327192A (en) * | 1962-04-04 | 1963-05-17 | Sachet improvements | |
CH428119A (en) * | 1965-12-28 | 1967-01-15 | Sig Schweiz Industrieges | Bag closed on all sides |
-
1992
- 1992-02-14 GB GB929203197A patent/GB9203197D0/en active Pending
-
1993
- 1993-02-12 CA CA 2130091 patent/CA2130091A1/en not_active Abandoned
- 1993-02-12 EP EP93903274A patent/EP0625115A1/en not_active Withdrawn
- 1993-02-12 WO PCT/GB1993/000295 patent/WO1993015974A1/en not_active Application Discontinuation
- 1993-02-12 GB GB9416469A patent/GB2279327B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2413686A (en) * | 1941-02-26 | 1947-01-07 | Millie Patent Holding Co Inc | Infusion package with handle and the method of manufacturing same |
US2348201A (en) * | 1941-07-12 | 1944-05-09 | Nat Urn Bag Co Inc | Manufacture of infusion packages with handles |
US2362459A (en) * | 1942-02-07 | 1944-11-14 | Nat Urn Bag Co Inc | Infusion package and the manufacture thereof |
FR1327192A (en) * | 1962-04-04 | 1963-05-17 | Sachet improvements | |
CH428119A (en) * | 1965-12-28 | 1967-01-15 | Sig Schweiz Industrieges | Bag closed on all sides |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2286816A (en) * | 1994-02-23 | 1995-08-30 | Unigreen Int As | Disposable filter bag |
WO1995023100A1 (en) * | 1994-02-23 | 1995-08-31 | Unigreen International A/S | Disposable filter bag for the preparation of extraction drinks such as tea |
GB2286816B (en) * | 1994-02-23 | 1998-04-29 | Unigreen Int As | Disposable filter bag for the preparation of infusion drinks such as tea |
GB2292554A (en) * | 1994-08-23 | 1996-02-28 | Andrew Leslie Walmsley | Infusion device |
GB2292554B (en) * | 1994-08-23 | 1998-09-30 | Andrew Leslie Walmsley | Improvements relating to infusion devices |
EP1101710A1 (en) * | 1999-11-19 | 2001-05-23 | Grünland GmbH | Tea infusion bag |
Also Published As
Publication number | Publication date |
---|---|
GB9203197D0 (en) | 1992-04-01 |
EP0625115A1 (en) | 1994-11-23 |
CA2130091A1 (en) | 1993-08-19 |
GB2279327B (en) | 1996-02-07 |
GB2279327A (en) | 1995-01-04 |
GB9416469D0 (en) | 1994-10-05 |
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