FILTER BAG CONSISTING OF FILTER PAPER FOR PRODUCING BREWED BEVERAGES SUCH AS COFFEE OR TEA, STACK OF FILTER BAGS OF THIS TYPE AND METHOD FOR PRODUCING FILTER BAGS OF THIS TYPE

摘要

The present invention relates to a kind of filter bag (10) by filter paper for generating modulation beverage such as coffee or tea, including holding space (17), for accommodating the beverage of substance preparation, such as ground coffee or tealeaves. Filter bag is to be cut to by folded filter piece due size (1), two filter plate sides (11,12). Filter plate side (11,12) size and shape basically the same has an edge, and bottom side end and two edges are consequently formed and form side (13 and 22,24 or 23,25). Side edge (22,24:23,25) is separated upwards and has been held upper edge (14,15), is provided and is formed opening (30) for filling. The susceptor edges (13) and edge (22,24; 23,25) two filter plate sides (11,12) or interconnection and actively cooperation, in this case, what they formed substrates and/or key tank retroflects (37 and/or 28,29), in the region, or it interconnects completely in these regions, in order to form filter bag (10). According to the present invention, the passing through for (37 and/or 28,29) interconnection that retroflect of only substrate and/or key tank just cooperates the filter for being folded around side. Therefore, filter bag (10) keeps its opening promising. According to the second invention, filter bag (10), such as produce above-mentioned technical characteristic according to the present invention can be easily positioned in lamination (18) by it is nested they one inside another, forming and keeping space (17). This is easily processed filter bag (10).