Sealed flexible cartridge

Details Sealed flexible cartridge Sealed flexible cartridge

B - Operations, Transporting

65

D

B65D 81/00 (2006.01)

Patent

CA 2450701

The present invention relates to a sealed flexible cartridge (1) , designed to be extracted under pressure, containing a substance for the preparation of a beverage, consisting of a first (3) and a second sheet (4) of circular, oval or polygonal shape which leave between them a space for the substance (2) and are welded together around their periphery (5), the first sheet (3) being made of a material chosen from filter paper, a non-woven and a semi-rigid material and the second sheet (4) being made of a material chosen from filter paper, a non-woven and a composite, in which the first sheet is such that it allows water at atmospheric pressure to pass through it or by piercing with a piercing means and the second sheet (4) is such that it allows water to pass through it only if an overpressure of between 0.1 and 3 bar is achieved during extraction from the said cartridge (1).

La présente invention concerne une cartouche souple scellée (1), prévue pour être extraite sous pression. Cette cartouche contient une substance pour la préparation d'une boisson. Elle se compose d'une première (3) et d'une deuxième feuille (4) de forme circulaire, ovale ou polygonale avec entre ces feuilles un espace pour la substance (2). Ces feuilles sont soudées ensemble autour de leur périphérie (5) . La première feuille (3) est composée d'un matériau choisi parmi un papier filtre, un matériau non tissé et un matériau semi-rigide. La deuxième feuille (4) se compose d'un matériau choisi parmi un papier filtre, un non tissé et un composite. La première feuille est elle qu'elle laisse passer l'eau à la pression atmosphérique ou par perçage à l'aide d'un moyen de perçage. La deuxième feuille (4) est telle qu'elle laisse passer l'eau uniquement lorsque la surpression se situe entre 0,1 et 3 bars pendant l'extraction de ladite cartouche (1).

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