CARTRIDGE FOR LIQUID PRODUCT PREPARATION AND METHOD OF ITS MANUFACTURING Russian patent published in 2017 - IPC B65D85/804 

FIELD: food industry.

SUBSTANCE: cartridge (10) comprising a portion (12) of at least one substance for preparing a liquid product, for example coffee, by introducing a liquid and/or steam into the cartridge (10), includes a housing (14) containing said portion (12), with the bottom wall (142) for discharging the liquid product from the cartridge (10). The bottom wall (142), as seen from the outside of the cartridge (10), has the central section (1420), the first annular groove (1422) surrounding the central section (1420), the intermediate annular section (1424) surrounding the first annular groove (1422) and separated from it with the first annular rib (1423) and the second annular groove (1426) surrounding the intermediate annular portion (1424) and separated from it with the second annular rib (1425). The bottom wall (142) has outlet openings (1428) for releasing the liquid product from the cartridge, which are located, for example, on at least one, and preferably on both sections: the central section (1420) and the intermediate section (1424).

EFFECT: cartridge according to the invention is easily biodegradable and yet is strong enough.

13 cl, 7 dwg