| 摘要 |
The present invention is directed to a capsule (1) for delivering a drink by injecting a pressurized fluid into the capsule comprising: a hollow body and an injection wall (4) which is impermeable to liquids and to gas and which is attached to the body and adapted to be punctured by an injection means (2) foreign to the capsule, a chamber (5) containing a bed of at least one food substance to be extracted, means (7, 9, 10) for retaining the internal pressure in the said chamber, said means comprising a pierceable membrane (7), characterized in that said capsule (1) further comprises a secondary means (12) for maintaining the bed of substance at a distance d from said pierceable membrane (7), said distance d being at least 1 mm, preferably at least 2 mm, more preferably at least 3 mm, and in that the pressure retaining means comprise: the pierceable membrane (7), raised elements (9) which open the said membrane (7) in order to create punctures and allow the liquid extract to pass through the punctures; the punctures in the membrane (7) being obtained under the effect of the rise in pressure in the chamber (5) of the capsule (1).
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