Sealed flexible bag and method for making same
作者： Alfred Yoakim , Jean-Pierre Pleisch , Jacques Schaeffer , Roland Rossier , Olivier Fond
DOI:
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摘要: A sealed flexible bag (1) designed for pressure extraction and containing at least one powdered substance preparing a beverage. The consists of two identical, round, oval or polygonal sheets (2, 3) defining therebetween space said (5) being around their periphery (4) such that is substantially symmetrical relative to its sealing plane. material used the impermeable oxygen steam may be as in provided device.
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