Importance

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Abstract

The invention is directed to a closed flexible sachet in the form of an individual portion provided for extraction under pressure, containing ground roast coffee, which sachet includes two identical flexible sheets or a single folded flexible sheet of circular, oval or polygonal shape. A space for a powdered beverage is created between the two sheets or between the two faces of the folded sheet. The two sheets or the two faces of the folded sheet are welded over their periphery so that the sachet is substantially symmetrical with respect to its welding plane. The sachet is opened through the rise in pressure which takes place upon injection of an extraction fluid, in which the two flexible sheets or the two faces of the folded sheet extend over one side of the sachet beyond their welding line to provide, between the sheets or between the two faces of the folded sheet, a channel which allows the arrival of the extraction fluid. The channel is substantially perpendicular to the welding line from which it emerges.

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First Claim