FIELD: personal use articles.
SUBSTANCE: invention relates to bags for coffee, tea, chamomile, etc. Single-cavity filter bag (1) comprises a tubular section of filter material, having originally the shape of an open tube and forming a cavity (3) containing a portion of brew product. The segment of filter material has at least a first closed upper end (5), formed by the first compound (S1) between the two edges of the first end of the specified interval. Two sides connecting the first and second ends are at least partially bent to one another, forming a fold inside the cavity. A second lower end (7) is closed by the second connection (S2) to form a rigid flat lower surface (11) of the filter bag, which ensures the stable base with a substantially triangular cross section, which is a bearing of the filter bag.
EFFECT: invention enables to reduce the brewing time, increase the quality of produced beverage, and simplifies packaging.
19 cl, 31 dwg
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