Patent ID: 6347725
Filing Date: 2002-02-19
Classification: B65D

Abstract:
A closed flexible sachet which contains an individual portion of a powdered beverage for extraction under pressure, comprising:at least one flexible sheet welded along a welding line around its periphery to form an interior space for containing the powdered beverage, the sachet being substantially symmetrical with respect to its welding plane; and a channel for water ingress and having an outside portion formed by an edge of the sheet that extends beyond the welding line opposite from the interior space, the channel being oriented substantially perpendicular to the welding line; wherein the flexible sheet is impermeable to oxygen and to water vapor, and the welding line is sufficiently weak across the channel for breaking upon injection of an extraction fluid at a sufficient pressure in the outside channel portion for opening the channel and permitting ingress of the extraction fluid through the channel into the interior space.