Patent ID: 8986762
Filing Date: 2015-03-24
Classification: A47J,B65D

Abstract:
1. A capsule for use in a beverage production machine, the beverage production machine comprising a member that perforates an inlet side of a body of the capsule opposed to a foil member and a flange-like rim and injects a liquid or a liquid/gas mix into the capsule; and a relief plate having a multitude of relief elements, the relief plate is positioned in the machine such that injection pressure urges the foil member against the relief plate; and the capsule comprising: a base body sealed off by the foil member tightly attached to the flange-like rim of the base body, the foil member (i) having a thickness between 15 and 45 microns, (ii) being constructed from a material selected from the group consisting of aluminum, aluminum alloy, a laminate of aluminum and a polymer, a laminate of aluminum alloy and a polymer, and combinations thereof, and (iii) when perforated by the relief plate, forms a multitude of openings when the pressure of the injected liquid or liquid/gas mixture reaches a value of at least 4 bar, wherein the base body contains ground coffee having a particle size between 190 and 400 microns; and a flow control porous member positioned between at least a portion of ingredients in the capsule and the foil member, the flow control porous member having a pore size of between 0.4 and 2 microns, wherein the porous member is made of at least one thin polymeric membrane having a thickness between 0.4 microns and 1.0 mm, and is made of a material selected from the group consisting of polypropylene, polyethylene, PBT, Nylon, polycarbonate, poly(4-methyl pentene-), polyurethane, PET, polyethersulfone, polyamide, resin bonded-glass fibers and combinations thereof.