| abstract |
The invention relates to a closed cartridge intended to be extracted under pressure, containing a substance (3) for the preparation of a drink, comprising a cup (2) with upper face and side wall having substantially the shape of a truncated cone. and a lower face (4) of diameter greater than the upper face, in which the lower face is a seal welded around the periphery of the lower rim of the cup and consists of a flexible material impermeable to oxygen, chosen from the group consisting of aluminum, an aluminum / plastic composite, an aluminum / plastic / paper composite, pure or multilayer plastic. |