Patent ID: 11939142
Assignee: LUIGI LAVAZZA S.P.A.
Field: Handling (Mechanical engineering)
Classification: CPC B  A | IPC A  B

Claim 17:
18. A capsule for extraction of a coffee-based beverage, having a capsule body made of a water-impervious material, the capsule body defining a chamber having volume comprised between 15 cm3 and 30 cm3, within which is precursor in powder form of the beverage that comprises soluble coffee powder and roast and ground coffee powder, the capsule body having an upper part which comprises an inlet wall, for introduction of pressurized water into the capsule body, and a lower part which includes an outlet wall, for outflow of the beverage from the capsule body,
wherein at least 51 wt % of the precursor is roast and ground coffee powder having a grain size expressed in x50 comprised between 350 and 800 μm,
wherein a complement to 100 wt % of the precursor is soluble coffee powder having a grain size expressed in x50 comprised between 1000 and 5000 μm,
wherein the roast and ground coffee powder is laid out to form a first layer in the lower part of the capsule body, and the soluble coffee powder is laid out to form a second layer in the upper part of the capsule body,
wherein the first layer of roast and ground coffee powder is densified, or pressed, within the capsule body with a weight-to-volume ratio expressed in g/cm3 that is comprised between 0.30 and 0.60, and the second layer of soluble coffee powder is within the capsule body substantially undensified or unpressed, and
wherein the total weight of the precursor in powder form is comprised between 5 g and 12 g, the first layer comprises between 5 g and 8.5 g of roast and ground coffee powder, and the second layer comprises between 1 g and 3.5 g of soluble coffee powder.