| 摘要 |
Capsule (1) for the preparation of a coffee extract from coffee contained in the capsule and hot water injected under pressure in the capsule by a water injection device, said capsule comprising:
a frusto-conical body (2) comprising a rim (3), a sidewall (4) and an inlet wall (5); the inlet wall comprising a flat or convex portion (6),
a lower delivery wall (7) sealed to the rim (3) of the body,
a predosed amount of coffee in the capsule,
wherein the flat convex portion (6) has a structure (8; 80, 81, 82, 83; 84; 85, 86, 87, 88) in relief or in recess,
wherein the structure in relief or in recess is arranged for facilitating penetration of blades belonging to the injection device and extends on a substantially circular path of predetermined radius R1 equal to the radius R2 of the circular path along which the blades (20, 21, 22) of the injection device extend. |
