Patent ID: 8734881

Claim:
A capsule for the production of a beverage from a beverage production machine that provides a capsule holder with relief and recessed elements, with the capsule comprising: an inverted body having a central axis and width, a bottom injection wall, a sidewall and a flange-like rim that surrounds an opening, with the body forming a chamber containing a beverage forming ingredient therein; and a delivery wall which is sealed to the body to close the opening, and which comprises a flat outer surface extending from the central axis of the capsule to the flange-like rim of the body and an insert having a three-dimensional portion of porous material, with the portion of porous material of the insert having a ratio of transversal width to depth from 30:1 to 1:30, in order to provide to the delivery wall a backpressure that is greater than the backpressure of the beverage forming ingredient in the chamber; wherein the portion of porous material has either (a) an open cell structure of aggregated solid particles which holds a number of pores in axial and transversal directions, or (b) a three-dimensional filtering structure configured by a filtering lattice in axial and transversal dimensions with the structure comprising a plurality of layers of plastic non woven and metal lattice elements, or (c) both (a) and (b).