CA1294790C - Filter, especially coffee filter, and process for producing it - Google Patents
Filter, especially coffee filter, and process for producing itInfo
- Publication number
- CA1294790C CA1294790C CA000550766A CA550766A CA1294790C CA 1294790 C CA1294790 C CA 1294790C CA 000550766 A CA000550766 A CA 000550766A CA 550766 A CA550766 A CA 550766A CA 1294790 C CA1294790 C CA 1294790C
- Authority
- CA
- Canada
- Prior art keywords
- filter
- blank
- cup
- edge
- bag
- 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.)
- Expired - Lifetime
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/02—Coffee-making machines with removable extraction cups, to be placed on top of drinking-vessels i.e. coffee-makers with removable brewing vessels, to be placed on top of beverage containers, into which hot water is poured, e.g. cafe filter
-
- 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
- B65D85/8043—Packages adapted to allow liquid to pass through the contents
- B65D85/8061—Filters
Abstract
Abstract:
A coffee filter, to be attached to the edge of a cup or like vessel, consists of a triangular frame attachable to the cup edge and a bag fastened inside the triangular frame and made of filter material, such as filter paper.
The triangular frame is preferably formed by a paper-board or cardboard blank which can be unfolded into a triangle.
A coffee filter, to be attached to the edge of a cup or like vessel, consists of a triangular frame attachable to the cup edge and a bag fastened inside the triangular frame and made of filter material, such as filter paper.
The triangular frame is preferably formed by a paper-board or cardboard blank which can be unfolded into a triangle.
Description
The invention relates to filters, especially to a novel coffee filter to be attached to the edge of a cup or sim-ilar preparation vessel and ~o a blank and a process for producing a filter of this type.
It is known to put tea and a:Lso ground coffee into pour-on bags, the filling quantity being intended for one or more cups~ However, after brewing, pour-on coffee bags either provide an unsatisfactory drink because the e~tract con-tent is too low, or have to be stirred vigorously in thecup for a sufficient time to obtain the necessary extract content. Furthermore, the ground coffee absorbs a con-siderable quantity of water, with a result that the cup is no longer full after the bag has been ta~en out.
Starting from this state of the art, the object on which the present invention is based is to provide a means of preparing coffee in an amount appropriate for a cup, by means of which the necessary extract content is obtained directly after brewing and which is simple in terms of 2Q production and handling. The object of the invention is also to provide processes for producing such an auxiliary means, and an associated semi-finished product for this.
This object is achieved in a surprisingly simple way by means of the characterizing features of Claims 1, 11 and 12 respectively, Claims 2 to 10 and 13 to 16 relating to advantageous details of the construction according to the invention or of the process according to the invention.
Thus, the significance of the invention is to be found in the provision of a cup filter and the production of the latter by the simplest possible means. At the same time, the cup filter designed according to the invention is ~k ` l~g~79~
characterized by maximum functional capacity and ease of handling.
According to the invention, the filter bag extends into the corners of the triangular frame, that is to say com-pletely fills ~he free cross-section of the triangular frame, thus ensuring that, when hot water is poured on, this does not flow past the filter bag into the cup. In production terms, this can be achieved very simply by using the blank described in Claim 11, this blank being characterized in that the filter-paper blank e~tends over the entire length of the associated cardboard blankO
Accordingly, the filter-paper blank is joined to the top edge of the triangular frame formed from a cardboard blank, over the entire original length of the cardboard blank.
Thus, the design of the cup filter according to Claim 2 and the following claims is especially advantageous as regards both production and handling. Ease of handling also arises from, among other things, the measures accord-ing to Claim 3, according to which the paperboard or card-board frame which can be unfolded into a triangle is fold-ed inwards on at least one side to form an M-shape fold.
This makes it possible to fold the filter together flat, with a result that a minimum transport and stowage space is required. On the other hand, this folding makes it possible to match the filter to different edge diameters of cups or suchlike vessels, whilst at the same time en-suring high stability. In particular, the M-shaped fold guarantees that the filter frame cannot slip off directly sideways over the cup edge. Stability can be further in-creased as a result of the measures according to Claim 10 according to which the filter frame, on its supporting edge assigned to the cup or the like, has recesses for receiving the edge of the cup or the like.
~29~7go Preferably, the filter bag is closed on all sides at the factory, at the same time containing a predetermined quantity of coffee or the like, the filter bag being opened, before use, along its upper limiting edge.
According to Claim 8, the filter bag can be closed by means of an adhesive strip or a tab connected to the frame element.
When a predetermined quantity of coffee has been intro-duced, the cup filter according to the invention, folded together ~lat, is enclosed in an air-tight and aroma-tight manner, preferably vacuum-packaged, in an outer pouch-like wrapping.
The blank for producing a filter with a paperboard or cardboard frame is the simplest possible. It is designed as a rectangular blank of cardboard or the like, along one longitudinal edge of which a preferably approximately identical blank of filter paper is fastened, especially sealed or sewn. It is important that the filter-paper blank should be of the same length as the cardboard blank.
The width of the filier-paper blank can also be less than the width of the cardboard blank.
With such a double-ply blank being used, the production of the filter designed according to the invention is the simplest possible. Accordingly, the cup filter according to the invention is suitable for factory production as a mass-produced article. Attention is-drawn to Claim 12 for the individual process steps, and advantageous process details are described in Claim 13 and the following claims.
An exemplary embodiment of a cup filter designed according to the invention and its production is explained in detail below with reference to the accompanying drawing. In the drawing:
- Z~79~
Figures 1 to 6 show a diagrammatic representation of the individual process steps for producing a cup filter designed according to the invention;
Figures 7a and 7b show plan views of the cup filter pro-duced or designed according to the invention, specifically partially un~olded (Figure 7a) and completely unfolded (Figure 7b); and Figure 8 shows a perspective view of the cup filter according to Figures 7a and 7b attached to a cup.
In order to produce a cup filter of the type yet to be described in detail, two webs of ~ilter paper 20 and card-board 21, of essentially the same size, in particular the same width, are conveyed onto one another, to form a double-ply web of material 28. A continuous sealing seam 22 is made progressively on one longitudinal edge, for example, by means of wheel-shaped sealing tools 23.
Accordingly, both the filter paper and the cardboard must be made of sealable material or be surface-coated with a sealable material.
~0 The continuous double-web or double-ply structure 28 is then divided into blanks 24 according to Figure 2, which correspond to the necessary length for a cup filter. The two plys of each blank are now unfolded from one another (the arrow 29 in Figure 2), so that a cardboard blank 25 and filter-paper blank 26 are next to one another, but, as before, remain joined to one another via the seaIing seam 22 (Figure 3). In this position, the two blanks are first folded centrally, and then an M-shaped fold 16 according to Figure ~ is made by means of a continuously operating folding tool, especially a folding blade (not shown). Sealing is then carried out on the free end edges of the cardboard blank 25, which are on the right in Fig-ure 4, and the corresponding edge sealing seam 13 is made (Figure 5). Subsequently, but preferably simultaneously, gL79(:~`
the filter-paper blank 24, which projects from the card-board blank 25 and which is likewise identified on one side by the above mentioned ~-shaped fold 16, is provided with a V-shaped, preferably trapezoidal sealing seam 19, so as to form a filter bag 10. The triangular filter-paper gussets 17 and 18 (Figure 5) projecting laterally or at the corners are detached or cut off. The filter bag thus acquires a generally trapezoidal shape.
Subsequently, the filter bag 10 is brought between the walls of the cardboard blank 25. For this purpose, com-pressed air is directed at the filter bag 10 via a blowing nozzle 27 from below in Figure 5 and from above in Figure 6, so that this compressed air flows inwards between the walls of the cardboard blank 25. The cardboard blank 25, in the embodiment described, forms an unfoldable triang-ular frame for the filter bag which is joined, in parti-cular sealed, to the cardboard blank along the entire top edge 12.
As a result of the M-shaped fold 16, the cup filter pro-duced in the way described can be folded together flat and, when unfolded, can be matched to different edge di-ameters of coffee or suchlike cups, so that, after it has been attached to the cup edge, it cannot slip off directly from this, that is to say it rests securely on the cup edge. In Figure 8, the cup filter designed according to the invention is attached to the edge 11 of a cup 14.
To make it easier to unfold the cup filter described, in Figure 5 the sealing seam 19 is made, in the region of the M-shaped fold 16, in such a way that it is present only between two blank parts resting directly on one another.
Attention is drawn, in this respect, to Figures 7a to 8.
Preferably, the filter bag 10 is filled with a predeter-12~7~
mined quantity of coffee at the factory. After filling, the cup filter is folded together flat, closed along the top edge 12, for example by means of an adhesive strip or a closing tab, and subsequently accommodated in an air-tight and aroma-tight manner, preferably vacuum-packaged, in an outer wrapping. For use, this outer wrapping is torn open and removed, the above-mentioned adhesive tape pulled off, and the cup filter unfolded and attached to a cup or to the cup edge 11 of a cup 14. The quantity of coffee appropriate for a cup can subsequently be brewed by means of hot water.
In order to increase the stability of the cup filter des-cribed or of the cardboard blank 25 which can be unfolded into a triangle on the cup edge 11 of a cup 14, the card-board frame produced from the blank 25, on its supportingedge 15 assigned to the cup 14, can have recesses 30 for receiving the cup edge 11 (see Figure 8).
These recesses are made continuously in the web of card-board material 20, before the individual blanks 24 are produced, by means of appropriately associated roller or cylinder stamping tools. In Figure 1, the recesses are made on the longitudinal edge of the web of cardboard material 22 located opposite the sealing seam 22, spec-ifically during the continuous transport of the latter.
All the features disclosed in the documents are claimed as essential to the invention, in so far as they are new in relation to the state of the art either individually or in combination.
It is known to put tea and a:Lso ground coffee into pour-on bags, the filling quantity being intended for one or more cups~ However, after brewing, pour-on coffee bags either provide an unsatisfactory drink because the e~tract con-tent is too low, or have to be stirred vigorously in thecup for a sufficient time to obtain the necessary extract content. Furthermore, the ground coffee absorbs a con-siderable quantity of water, with a result that the cup is no longer full after the bag has been ta~en out.
Starting from this state of the art, the object on which the present invention is based is to provide a means of preparing coffee in an amount appropriate for a cup, by means of which the necessary extract content is obtained directly after brewing and which is simple in terms of 2Q production and handling. The object of the invention is also to provide processes for producing such an auxiliary means, and an associated semi-finished product for this.
This object is achieved in a surprisingly simple way by means of the characterizing features of Claims 1, 11 and 12 respectively, Claims 2 to 10 and 13 to 16 relating to advantageous details of the construction according to the invention or of the process according to the invention.
Thus, the significance of the invention is to be found in the provision of a cup filter and the production of the latter by the simplest possible means. At the same time, the cup filter designed according to the invention is ~k ` l~g~79~
characterized by maximum functional capacity and ease of handling.
According to the invention, the filter bag extends into the corners of the triangular frame, that is to say com-pletely fills ~he free cross-section of the triangular frame, thus ensuring that, when hot water is poured on, this does not flow past the filter bag into the cup. In production terms, this can be achieved very simply by using the blank described in Claim 11, this blank being characterized in that the filter-paper blank e~tends over the entire length of the associated cardboard blankO
Accordingly, the filter-paper blank is joined to the top edge of the triangular frame formed from a cardboard blank, over the entire original length of the cardboard blank.
Thus, the design of the cup filter according to Claim 2 and the following claims is especially advantageous as regards both production and handling. Ease of handling also arises from, among other things, the measures accord-ing to Claim 3, according to which the paperboard or card-board frame which can be unfolded into a triangle is fold-ed inwards on at least one side to form an M-shape fold.
This makes it possible to fold the filter together flat, with a result that a minimum transport and stowage space is required. On the other hand, this folding makes it possible to match the filter to different edge diameters of cups or suchlike vessels, whilst at the same time en-suring high stability. In particular, the M-shaped fold guarantees that the filter frame cannot slip off directly sideways over the cup edge. Stability can be further in-creased as a result of the measures according to Claim 10 according to which the filter frame, on its supporting edge assigned to the cup or the like, has recesses for receiving the edge of the cup or the like.
~29~7go Preferably, the filter bag is closed on all sides at the factory, at the same time containing a predetermined quantity of coffee or the like, the filter bag being opened, before use, along its upper limiting edge.
According to Claim 8, the filter bag can be closed by means of an adhesive strip or a tab connected to the frame element.
When a predetermined quantity of coffee has been intro-duced, the cup filter according to the invention, folded together ~lat, is enclosed in an air-tight and aroma-tight manner, preferably vacuum-packaged, in an outer pouch-like wrapping.
The blank for producing a filter with a paperboard or cardboard frame is the simplest possible. It is designed as a rectangular blank of cardboard or the like, along one longitudinal edge of which a preferably approximately identical blank of filter paper is fastened, especially sealed or sewn. It is important that the filter-paper blank should be of the same length as the cardboard blank.
The width of the filier-paper blank can also be less than the width of the cardboard blank.
With such a double-ply blank being used, the production of the filter designed according to the invention is the simplest possible. Accordingly, the cup filter according to the invention is suitable for factory production as a mass-produced article. Attention is-drawn to Claim 12 for the individual process steps, and advantageous process details are described in Claim 13 and the following claims.
An exemplary embodiment of a cup filter designed according to the invention and its production is explained in detail below with reference to the accompanying drawing. In the drawing:
- Z~79~
Figures 1 to 6 show a diagrammatic representation of the individual process steps for producing a cup filter designed according to the invention;
Figures 7a and 7b show plan views of the cup filter pro-duced or designed according to the invention, specifically partially un~olded (Figure 7a) and completely unfolded (Figure 7b); and Figure 8 shows a perspective view of the cup filter according to Figures 7a and 7b attached to a cup.
In order to produce a cup filter of the type yet to be described in detail, two webs of ~ilter paper 20 and card-board 21, of essentially the same size, in particular the same width, are conveyed onto one another, to form a double-ply web of material 28. A continuous sealing seam 22 is made progressively on one longitudinal edge, for example, by means of wheel-shaped sealing tools 23.
Accordingly, both the filter paper and the cardboard must be made of sealable material or be surface-coated with a sealable material.
~0 The continuous double-web or double-ply structure 28 is then divided into blanks 24 according to Figure 2, which correspond to the necessary length for a cup filter. The two plys of each blank are now unfolded from one another (the arrow 29 in Figure 2), so that a cardboard blank 25 and filter-paper blank 26 are next to one another, but, as before, remain joined to one another via the seaIing seam 22 (Figure 3). In this position, the two blanks are first folded centrally, and then an M-shaped fold 16 according to Figure ~ is made by means of a continuously operating folding tool, especially a folding blade (not shown). Sealing is then carried out on the free end edges of the cardboard blank 25, which are on the right in Fig-ure 4, and the corresponding edge sealing seam 13 is made (Figure 5). Subsequently, but preferably simultaneously, gL79(:~`
the filter-paper blank 24, which projects from the card-board blank 25 and which is likewise identified on one side by the above mentioned ~-shaped fold 16, is provided with a V-shaped, preferably trapezoidal sealing seam 19, so as to form a filter bag 10. The triangular filter-paper gussets 17 and 18 (Figure 5) projecting laterally or at the corners are detached or cut off. The filter bag thus acquires a generally trapezoidal shape.
Subsequently, the filter bag 10 is brought between the walls of the cardboard blank 25. For this purpose, com-pressed air is directed at the filter bag 10 via a blowing nozzle 27 from below in Figure 5 and from above in Figure 6, so that this compressed air flows inwards between the walls of the cardboard blank 25. The cardboard blank 25, in the embodiment described, forms an unfoldable triang-ular frame for the filter bag which is joined, in parti-cular sealed, to the cardboard blank along the entire top edge 12.
As a result of the M-shaped fold 16, the cup filter pro-duced in the way described can be folded together flat and, when unfolded, can be matched to different edge di-ameters of coffee or suchlike cups, so that, after it has been attached to the cup edge, it cannot slip off directly from this, that is to say it rests securely on the cup edge. In Figure 8, the cup filter designed according to the invention is attached to the edge 11 of a cup 14.
To make it easier to unfold the cup filter described, in Figure 5 the sealing seam 19 is made, in the region of the M-shaped fold 16, in such a way that it is present only between two blank parts resting directly on one another.
Attention is drawn, in this respect, to Figures 7a to 8.
Preferably, the filter bag 10 is filled with a predeter-12~7~
mined quantity of coffee at the factory. After filling, the cup filter is folded together flat, closed along the top edge 12, for example by means of an adhesive strip or a closing tab, and subsequently accommodated in an air-tight and aroma-tight manner, preferably vacuum-packaged, in an outer wrapping. For use, this outer wrapping is torn open and removed, the above-mentioned adhesive tape pulled off, and the cup filter unfolded and attached to a cup or to the cup edge 11 of a cup 14. The quantity of coffee appropriate for a cup can subsequently be brewed by means of hot water.
In order to increase the stability of the cup filter des-cribed or of the cardboard blank 25 which can be unfolded into a triangle on the cup edge 11 of a cup 14, the card-board frame produced from the blank 25, on its supportingedge 15 assigned to the cup 14, can have recesses 30 for receiving the cup edge 11 (see Figure 8).
These recesses are made continuously in the web of card-board material 20, before the individual blanks 24 are produced, by means of appropriately associated roller or cylinder stamping tools. In Figure 1, the recesses are made on the longitudinal edge of the web of cardboard material 22 located opposite the sealing seam 22, spec-ifically during the continuous transport of the latter.
All the features disclosed in the documents are claimed as essential to the invention, in so far as they are new in relation to the state of the art either individually or in combination.
Claims (16)
1. A coffee filter comprising a holding frame which can be attached to the edge of a cup or like preparation vessel and a filter bag fastened inside said holding frame and made of filter material, said filter bag being fastened to said holding frame along the entire inner peripheral edge thereof, so that the total free cross-section of said holding frame is filled by the filter bag, said holding frame being of triangular contour and being formed from a rectangular paperboard or cardboard blank which can be unfolded into a triangle.
2. A filter according to claim 1, wherein said blank is folded inwards on at least one side thereof to form a M-shape fold, with the respective adjacent sidewall of the blank forming said triangular frame.
3. A filter according to claim 1, wherein the opening edge of said filter bag is joined by sealing or sewing to the top edge of said triangular frame attachable to a cup over the entire peripheral length of said triangular frame.
4. A filter according to claim 2, wherein the opening edge of said filter bag is joined by sealing or sewing to the top edge of said triangular frame attachable to a cup over the entire peripheral length of said triangular frame.
5. A filter according to claim 1, claim 2, claim 3 or claim 4, wherein said filter bag is limited by an approximately trapezoidal side and bottom sealing seam, in such a way that said filter bag lies within the walls of said holding frame formed from a cardboard blank.
6. A filter according to claim 1, claim 2, claim 3 or claim 4, wherein said holding frame is folded from a rectangular cardboard or paperboard blank and the two end edges of said blank are sealed to one another along an edge sealing seam.
7. A filter according to claim 1, claim 2, claim 3 or claim 4, wherein said filter bag is closed on all sides and contains a selected quantity of coffee.
8. A filter according to claim 1, claim 2, claim 3 or claim 4, further comprising an adhesive strip or tab connected to said triangular frame and operable to close said filter bag.
9. A filter according to claim 1, claim 2, claim 3 or claim 4, further comprising an outer pouch like wrapping for enclosing said holding frame and said coffee-filled filter bag when folded together flat in an air-tight and aroma-tight manner.
10. A filter according to claim 1, claim 2, claim 3 or claim 4, wherein said holding frame includes recesses on its supporting edge for said cup or like preparation vessel adapted to receive the edge of the cup or vessel in order to increase stability.
11. A process for producing a cup filter comprising the steps of:
a) conveying two webs of filter paper and cardboard, respectively, of approximately the same width onto one another, to form a double-ply web of material, and joining the webs to one another along one longitudinal or side edge, b) dividing said double-ply web of material into rectangular blanks which each have the necessary length for a filter unit, c) folding each of said blanks, first centrally and then on both sides in opposite directions at the distance from this centre fold, in such a way that the end edges are located above one another, thereby forming an M-shaped fold, d) sealing together those end edges of said blanks located above one another to form an unfoldable triangular frame, and e) shaping the filter paper inside said triangular frame into a cone-like bag.
a) conveying two webs of filter paper and cardboard, respectively, of approximately the same width onto one another, to form a double-ply web of material, and joining the webs to one another along one longitudinal or side edge, b) dividing said double-ply web of material into rectangular blanks which each have the necessary length for a filter unit, c) folding each of said blanks, first centrally and then on both sides in opposite directions at the distance from this centre fold, in such a way that the end edges are located above one another, thereby forming an M-shaped fold, d) sealing together those end edges of said blanks located above one another to form an unfoldable triangular frame, and e) shaping the filter paper inside said triangular frame into a cone-like bag.
12. A process according to claim 11, wherein, before each said rectangular blank is folded, the two piles of material forming each blank, are unfolded from one another, so that a cardboard blank and a filter-paper blank are next to one another.
13. A process according to claim 12, wherein the method of shaping the filter paper into a cone-like bag comprises providing said filter-paper blank with an approximately V-shaped sealing seam, unfolding said cardboard blank, and blowing the filter bag into the unfolded cardboard blank.
14. A process according to claim 13, further comprising the steps of filling said cone-like bag with a predetermined quantity of coffee and folding said cardboard blank and said filter bag flat together again.
15. A process according to claim 14, wherein the cup filter filled with coffee, is subsequently enclosed in an air-tight and aroma-tight wrapping.
16. A process according to claim 14 or claim 15, wherein triangular gussets projecting laterally or at the corners when said filter bag is formed are detached before said filter bag is blown into said cardboard blank.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3638990.0 | 1986-11-14 | ||
| DE19863638990 DE3638990A1 (en) | 1986-11-14 | 1986-11-14 | FILTERS, IN PARTICULAR COFFEE FILTERS, AND METHOD FOR PRODUCING THE SAME |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1294790C true CA1294790C (en) | 1992-01-28 |
Family
ID=6313982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000550766A Expired - Lifetime CA1294790C (en) | 1986-11-14 | 1987-11-02 | Filter, especially coffee filter, and process for producing it |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0268847B1 (en) |
| JP (1) | JPS63135112A (en) |
| AT (1) | ATE57600T1 (en) |
| CA (1) | CA1294790C (en) |
| DE (2) | DE3638990A1 (en) |
| ES (1) | ES2018528B3 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0248025U (en) * | 1988-09-29 | 1990-04-03 | ||
| JPH0413568U (en) * | 1990-05-18 | 1992-02-04 | ||
| JPH0685631U (en) * | 1993-05-20 | 1994-12-13 | フィルコ株式会社 | Coffee extractor |
| JPH0833571A (en) * | 1994-07-22 | 1996-02-06 | Sasaki Tsusho Kk | Percolator |
| DE29615669U1 (en) * | 1996-09-09 | 1998-01-15 | Melitta Haushaltsprodukte | Pyramid-like filter paper insert |
| JP3664574B2 (en) * | 1997-02-21 | 2005-06-29 | キーコーヒー株式会社 | Taste beverage extraction bag with cup-mounted support |
| DE202011109328U1 (en) | 2011-12-21 | 2012-02-15 | M.B. Werbung Gmbh | Disposable filter for coffee powder or tea |
| DE102018101338A1 (en) * | 2018-01-22 | 2019-07-25 | Melitta Single Portions Gmbh & Co. Kg | Process for making a drink with a sachet and sachet |
| DE102018101333A1 (en) | 2018-01-22 | 2019-07-25 | Melitta Single Portions Gmbh & Co. Kg | Portion pack and method of making a beverage |
| DE102019101533A1 (en) | 2019-01-22 | 2020-07-23 | Melitta Single Portions Gmbh & Co. Kg | Portion pack for making a drink |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE609794C (en) * | 1933-05-25 | 1935-02-23 | Margarethe Bruns Geb Boegel | Portion pack designed for coffee |
| CH204666A (en) * | 1938-09-16 | 1939-05-15 | Matzenauer & Co M | Pack for the preparation of extracts from coffee, tea, etc. |
| DE1884326U (en) * | 1963-09-06 | 1963-12-12 | Elisabeth Sylvanus | FOLDED FILTER. |
| FR1534274A (en) * | 1967-08-11 | 1968-07-26 | Individual filter for storing and preparing drinks | |
| DE1586641B1 (en) * | 1967-11-18 | 1970-09-03 | Frigeo Werk Beltle & Co | Sealed bag |
| FR2128945A6 (en) * | 1971-03-09 | 1972-10-27 | Abile Gal Emile | Coffee filter - with cover of plastic bonded metal foil contg freely disposed filtering pocket |
| DE2131124C3 (en) * | 1971-06-23 | 1974-11-14 | Schmidt, Ernst G., 2804 Lilienthal | Foldable top filter, especially for coffee |
| DE7240623U (en) * | 1972-07-03 | 1973-05-17 | Gerson L Co Inc | Filter bag sheet |
| DE2808215C3 (en) * | 1978-02-25 | 1980-12-04 | Kabel- Und Metallwerke Gutehoffnungshuette Ag, 3000 Hannover | Device for filtering liquids |
| AU553564B2 (en) * | 1980-12-27 | 1986-07-24 | Kataoka Bussan K.K. | Filter assembly for coffee maker |
| JPS5940909Y2 (en) * | 1982-06-03 | 1984-11-22 | 株式会社システムコミユニケ−シヨンズ | coffee extractor |
-
1986
- 1986-11-14 DE DE19863638990 patent/DE3638990A1/en not_active Withdrawn
-
1987
- 1987-10-26 AT AT87115666T patent/ATE57600T1/en not_active IP Right Cessation
- 1987-10-26 EP EP87115666A patent/EP0268847B1/en not_active Expired - Lifetime
- 1987-10-26 ES ES87115666T patent/ES2018528B3/en not_active Expired - Lifetime
- 1987-10-26 DE DE8787115666T patent/DE3765754D1/en not_active Expired - Fee Related
- 1987-11-02 CA CA000550766A patent/CA1294790C/en not_active Expired - Lifetime
- 1987-11-12 JP JP62284397A patent/JPS63135112A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0268847A1 (en) | 1988-06-01 |
| ES2018528B3 (en) | 1991-04-16 |
| DE3765754D1 (en) | 1990-11-29 |
| EP0268847B1 (en) | 1990-10-24 |
| JPS63135112A (en) | 1988-06-07 |
| ATE57600T1 (en) | 1990-11-15 |
| DE3638990A1 (en) | 1988-05-19 |
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