Patent ID: 9409703
Filing Date: 2016-08-09
CPC Classification: A23F,A47J,B65B,B65D

Claim Text:
1. A portion capsule for producing a beverage, having a capsule body with a capsule base and a filling side, wherein a cavity for accommodating a pulverulent, granular or liquid beverage base is formed between the capsule base and the filling side, and wherein a filter element is arranged between the beverage base and the capsule base, wherein the filter element comprises an open-pore felt and/or nonwoven, characterized in that the felt and/or the nonwoven have/has an average first pore size in a first layer which faces the beverage base and an average second pore size in a second layer which faces the capsule base, the first pore size is smaller than the second pore size, the two layers are fixedly connected to one another by welding, wherein the beverage which passes through the filter element expands in the second layer thereby reducing the pressure drop at the surface of the second layer of the filter element which faces the capsule base, wherein the formation of crema in the beverage is essentially prevented when the beverage is extracted in a machine which operates in a pressure range of up to 20 bar.