| 摘要 |
<p>A sachet filled with a material to be extracted by means of a liquid, such as tea or coffee, comprising a single chamber formed by a thin-walled material and filled with the material to be extracted, which chamber has two opposite sidewalls which are interconnected adjacent their longitudinal edges, the sachet comprising a first and a second longitudinal edge which are located opposite each other, the sachet being provided, adjacent the first longitudinal edge thereof, with a first expansion pleat extending parallel to the first longitudinal edge and, adjacent the second longitudinal edge thereof, with a first sealing seam extending parallel to the second longitudinal edge, characterized in that the sachet is further provided with a second expansion pleat extending parallel to the second longitudinal edge and located adjacent the second longitudinal edge. <IMAGE> <IMAGE></p> |
