| 摘要 |
A capsule for containing ground coffee is disclosed, the capsule comprising a frustoconical side wall of truncated conical form which is closed at its narrower end by a base and which has at the wider end a flange which encircles the side wall and extends radially outwardly. The flange has a first surface to which a foil is secured to close the capsule and a further surface which faces the pressing sleeve of the extraction machine when the capsule is placed in the machine prior to extraction taking place. A grid pattern of intersecting sealing ribs (90, 92, 96, 98) is provided on the further surface which ribs stand proud of the further surface. |
