| 摘要 |
A disposable filter bag for preparation of hot brewed beverages, particularly for the preparation of American coffee, comprises a double layer of water permeable paper material in which a chamber is delimited by weak weldings with a batch of ground coffee contained therein. The filter bag features wings foldable inwards over the chamber for reduction of the package size. To use the filter bag the wings are opened and the upper edges are separated so as to allow the weak weldings to be peeled off for complete opening of the filter bag inside a basket.
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