Cartridge for the preparation of a liquid product, and corresponding assortment

Abstract

A cartridge ( 10 ) for the preparation of a liquid product by means of liquid and/or steam introduced into the cartridge ( 10 ) comprises a casing ( 14 ) having inside it a first receiving chamber with a filling of a first substance (S 1 ) for preparation of said liquid product. The casing has a bottom wall ( 142 ) through which the liquid product is able to flow out of the cartridge ( 10 ), with said bottom wall ( 142 ) having, if viewed from outside the cartridge ( 10 ), a protruding central portion ( 1420 ) having inside it a second receiving chamber with a filling of a second substance (S 2 ) for preparation of said liquid product. Applied on the bottom wall ( 142 ) is a laminar filter element ( 180 ) that separates the first receiving chamber from the second receiving chamber. The bottom wall ( 142 ) has at least one opening ( 1428 ) for outflow of said liquid product from the cartridge ( 10 ) located in the protruding central portion ( 1420 ), coupled to which is a further filter element ( 182 ).

1 . A cartridge for the preparation of a liquid product by means of liquid and/or steam introduced into the cartridge, the cartridge including a casing having therein a first receiving chamber with a filling of a first substance for the preparation of said liquid product, said casing having a bottom wall for said liquid product to flow from the cartridge, wherein:
 said bottom wall presents, when observed on the outer side with respect to the cartridge, a central protruding portion providing therein a second receiving chamber with a filling of a second substance for the preparation of said liquid product,   on said bottom wall there is applied a laminar filter element which separates said first receiving chamber from said second receiving chamber.   
     
     
         2 . The cartridge of  claim 1 , wherein said laminar filter element includes filter paper or non-woven fabric. 
     
     
         3 . The cartridge of  claim 1 , wherein said bottom wall has at least one opening for the outflow of said liquid product from the cartridge, said at least one opening being at said central protruding portion of the bottom wall. 
     
     
         4 . The cartridge of  claim 3 , including a further filter element coupled to said at least one opening at said central protruding portion of the bottom wall. 
     
     
         5 . The cartridge of  claim 4 , wherein said further filter element is coupled to said at least one opening at the inner side of the bottom wall with respect to the cartridge. 
     
     
         6 . The cartridge of  claim 4 , wherein said further filter element includes filter paper or non-woven fabric. 
     
     
         7 . The cartridge of  claim 1 , wherein said bottom wall has openings for the outflow of said liquid product from the cartridge both at said central protruding portion of the bottom wall and around said central protruding portion, with said laminar filter element preferably extending also on said apertures around said central protruding portion. 
     
     
         8 . The cartridge of  claim 1 , wherein said first substance for the preparation of said liquid product is selected out of: powdered roasted and ground coffee, leaf tea, powdered or soluble milk. 
     
     
         9 . The cartridge of  claim 1 , wherein said second substance for the preparation of said liquid product is selected out of: soluble coffee, powdered milk, soluble chocolate, soluble barley, sugar, powdered soluble flavorings, and combinations thereof. 
     
     
         10 . The cartridge of  claim 1 , wherein the casing of the cartridge includes a sealing foil closing the casing of the cartridge at the end opposite to said bottom wall. 
     
     
         11 . An assortment of cartridges according to  claim 1 , including at least a first and a second cartridge, wherein:
 in said first cartridge, said central portion protrudes with respect to said bottom wall of a first amount, and   in said second cartridge, said central portion protrudes with respect to said bottom wall of a second amount, said first amount and said second amount being different from each other.