Abstract: A cartridge (10) for preparing a liquid product, for example a beverage such as coffee by introducing liquid and/or steam into the cartridge (10) contains a dose (12) of at least one substance, such as for example powdered coffee, which is able to form the aforesaid product using said liquid and/or steam. The dose is enclosed between foils (14, 16) that can be traversed by the aforesaid liquid and/or steam, said foils (14, 16) being connected together around the dose (12). The aforesaid foils (14, 16) are made of compostable material, i.e., a material that can be recovered by composting and biodegradation, and are connected together around the dose (12) using a connecting material (30), which is also compostable. The cartridge as a whole can hence be recovered by composting and biodegradation, in compliance with the European Norm UNI EN 13432:2002 and/or subsequent modifications and integrations thereof.

Abstract: A cartridge (10) containing a dose (12) of at least one substance, such as powdered coffee, for preparing a liquid product by means of liquid and/or steam introduced at a given temperature into the cartridge (10) comprises a casing (14) containing the aforesaid dose (12) with a side wall (140) and a bottom wall (142) through which the liquid product flows out from the cartridge (10). The aforesaid bottom wall (142) has a layered structure with: at least one layer (1420) made of a first compostable material designed to undergo softening and/or melting at a temperature ranging between 70° C. and 120° C.; and—at least one layer (1422) made of a second compostable material that does not undergo appreciable softening and/or melting at said temperature.