Capsule for preparing a predetermined quantity of beverage suitable for consumption using an extractable product, for instance roast and ground coffee, comprising a circumferential first wall, a second wall closing the circumferential first wall at a first end, a perforate and/or porous third wall c
Capsule for preparing a predetermined quantity of beverage suitable for consumption using an extractable product, for instance roast and ground coffee, comprising a circumferential first wall, a second wall closing the circumferential first wall at a first end, a perforate and/or porous third wall closing the circumferential first wall at a second, open, end opposite the second wall arranged for draining the prepared beverage from the capsule, wherein the first, second and third wall enclose an inner space comprising the extractable product, wherein the extractable product in the inner space of the capsule has been, at least partly compacted. The invention further relates to a method for manufacturing such a capsule, a system comprising such a capsule for preparing a beverage and a method for preparing of a beverage.
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1. A capsule for preparing a predetermined quantity of beverage suitable for consumption using an extractable product, the capsule comprising: a circumferential first wall,a second wall closing the circumferential first wall at a first end,a perforated and/or porous third wall closing the circumfere
1. A capsule for preparing a predetermined quantity of beverage suitable for consumption using an extractable product, the capsule comprising: a circumferential first wall,a second wall closing the circumferential first wall at a first end,a perforated and/or porous third wall closing the circumferential first wall at a second, open, end opposite the second wall arranged for draining the prepared beverage from the capsule,wherein the first, second and third wall enclose an inner space comprising the extractable product,wherein the extractable product in the inner space of the capsule has been, at least partly compacted,wherein the third wall comprises an exit filter arranged for draining prepared beverage from the capsule, wherein the exit filter is formed by filtering paper or a polymeric film provided with a plurality of exit openings, and wherein the exit filter and the extractable product in combination provide a fluid restriction resulting in an increase in extraction pressure within the inner space of the capsule;wherein the extractable product comprises roast and ground coffee;wherein prior to use the roast and ground coffee is compressed such that a first portion of the roast and ground coffee is compacted to a first compaction density and a second portion of the roast and ground coffee is compacted to a second compaction density greater than the first compaction density such that the compaction density of the extractable product increases toward the third wall; andwherein the capsule comprises an entrance filter, wherein prior to use the entrance filter has a flow resistance that is lower than the flow resistance of the compacted extractable product in combination with the exit filter. 2. The capsule according to claim 1, wherein the inner space of the capsule has a volume of approximately 10-14 ml. 3. The capsule according to claim 2, wherein the inner space of the capsule has a volume of 11.5-12.5 ml. 4. The capsule according to claim 2, wherein the inner space of the capsule has a volume of approximately 11.8 ml. 5. The capsule according to claim 1, wherein the entire inner space is occupied by the extractable product. 6. The capsule according to claim 1, wherein the roast and ground coffee has been obtained by compacting a coffee starting material having a particle size distribution by weight, wherein a 10th percentile thereof of the particle size is 20-60 μm, wherein a 50th percentile of the particle size is 370-570 μm, and wherein a 90th percentile of the particle size is 600-800 μm. 7. The capsule according to claim 6, wherein the roast and ground coffee has been obtained by compacting a coffee starting material having a particle size distribution by weight, wherein a 10th percentile thereof of the particle size is 20-40 μm, wherein a 50th percentile of the particle size is 370-490 μm and wherein a 90th percentile of the particle size is 600-700 μm. 8. The capsule according to claim 1, wherein the exit filter comprises 110-150 openings. 9. The capsule according to claim 8, wherein the exit filter comprises approximately 145 openings. 10. The capsule according to claim 1, wherein the first circumferential wall is substantially rigid. 11. The capsule according to claim 1, wherein the compacted extractable product is provided in a tablet. 12. The capsule according to claim 1, wherein the tablet comprises at least one bore extending from the side of the tablet facing the second wall in the direction of the third wall. 13. The capsule according to claim 1, wherein the extractable product is compacted into a plurality of tablets. 14. The capsule according claim 13, wherein a compaction density increases from the second wall of the capsule towards the third wall of the capsule. 15. The capsule according to claim 13, wherein the extractable product is compacted into a plurality of tablets of mutually different packing density. 16. The capsule according to claim 1, wherein the at least partially compacted extractable product has a particle size distribution by weight wherein a 10th percentile of the particle size is 20-60 μm, wherein a 50th percentile of the particle size is 400-600 μm, and wherein a 90th percentile of the particle size is 700-1000 μm. 17. The capsule according to claim 16, wherein the at least partially compacted extractable product has a particle size distribution by weight wherein a 10th percentile of the particle size is 20-40 μm wherein a 50th percentile of the particle size is 450-550 μm and wherein a 90th percentile of the particle size is 825-950 μm. 18. The capsule according to claim 1, wherein the opening diameter is approximately 0.3 mm±0.05 mm. 19. The capsule according to claim 1, wherein the capsule comprises 5.0-6.5 grams of roast and ground coffee. 20. The capsule according to claim 1, wherein the capsule comprises approximately 5.3 grams±0.2 grams roast and ground coffee.
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