20140087028 | PORTIONED PACKAGE FOR ESPRESSO MACHINES - Truncated-cone-shaped capsules of plastic can have a lower construction height than the widespread aluminium capsules for creating an espresso, in order to avoid the hot water injection needles penetrating into the portioned package of plastic and bonding. By way of this, a greater quantity of heated water at an increased pressure prevails outside the truncated-cone-shaped capsule with its conical side wall and the circumferential flange projecting circumferentially therefrom. This necessitates greater demands on the sealing of the truncated-cone-shaped capsule with respect to the brewing chamber, in which the capsule is introduced. It is therefore suggested to attach a seal in each case on the flange on the head-part-side surface as well as the opposite membrane-side surface. | 03-27-2014 |