A method for the packaging of a dose of a product in granular or particulate form or in the form of a concentrated liquid in a single-dose capsule for machines for dispensing beverages in the form of an infusion, said method comprising the steps of: (a) providing a cup-shaped body made of a multilayer material and obtained by way of a co-injection molding process, said multilayer material comprising an inner and an outer layer made of a structural material and an intermediate layer made of a barrier material adapted to prevent passage of oxygen, said body being common to each of said single-dose capsules; characterized in that (b) each capsule is configured based on a specific machine for dispensing beverages in the form of an infusion by selecting one of the following sets of operations: (b1.1) piercing a bottom wall of the cup-shaped body; (b1.2) sealing the opening thus obtained by way of a multilayer comprising a layer made of aluminum and a layer made of polypropylene; (b1.3) arranging a filter on the bottom wall; (b1.4) filling the cup-shaped body with a measured dose of a product in granular or particulate form or in the form of a concentrated liquid; (b1.5) sealing the top opening of the cup-shaped body with a gas-impermeable film, said film being a polylaminate. (b2.1) filling the cup-shaped body with a measured dose of a product in granular or particulate form or in the form of a concentrated liquid; (b2.2) sealing the top opening of the cup-shaped body with a gas-impermeable film, said film being a multilayer comprising a first layer made of aluminum and a second layer made of polypropylene. (b3.1) piercing a bottom wall of the cup-shaped body; (b3.2) sealing the opening thus obtained by means of a multilayer comprising a layer made of aluminum and a layer made of polypropylene; (b3.3) arranging a filter on the bottom wall; (b3.4) filling the cup-shaped body with a measured dose of a product in granular or particulate form or in the form of a concentrated liquid; (b3.5) sealing the top opening of the cup-shaped body with a gas- impermeable film, said film being a multilayer comprising a first layer made of aluminum and a second layer made of polypropylene. (a) providing a cup-shaped body made of a multilayer material and obtained by way of a co-injection molding process, said multilayer material comprising an inner and an outer layer made of a structural material and an intermediate layer made of a barrier material adapted to prevent passage of oxygen, said body being common to each of said single-dose capsules; characterized in that (b) each capsule is configured based on a specific machine for dispensing beverages in the form of an infusion by selecting one of the following sets of operations: (b1.1) piercing a bottom wall of the cup-shaped body; (b1.2) sealing the opening thus obtained by way of a multilayer comprising a layer made of aluminum and a layer made of polypropylene; (b1.3) arranging a filter on the bottom wall; (b1.4) filling the cup-shaped body with a measured dose of a product in granular or particulate form or in the form of a concentrated liquid; (b1.5) sealing the top opening of the cup-shaped body with a gas-impermeable film, said film being a polylaminate. (b2.1) filling the cup-shaped body with a measured dose of a product in granular or particulate form or in the form of a concentrated liquid; (b2.2) sealing the top opening of the cup-shaped body with a gas-impermeable film, said film being a multilayer comprising a first layer made of aluminum and a second layer made of polypropylene. (b3.1) piercing a bottom wall of the cup-shaped body; (b3.2) sealing the opening thus obtained by means of a multilayer comprising a layer made of aluminum and a layer made of polypropylene; (b3.3) arranging a filter on the bottom wall; (b3.4) filling the cup-shaped body with a measured dose of a product in granular or particulate form or in the form of a concentrated liquid; (b3.5) sealing the top opening of the cup-shaped body with a gas- impermeable film, said film being a multilayer comprising a first layer made of aluminum and a second layer made of polypropylene. (b1.1) piercing a bottom wall of the cup-shaped body; (b1.2) sealing the opening thus obtained by way of a multilayer comprising a layer made of aluminum and a layer made of polypropylene; (b1.3) arranging a filter on the bottom wall; (b1.4) filling the cup-shaped body with a measured dose of a product in granular or particulate form or in the form of a concentrated liquid; (b1.5) sealing the top opening of the cup-shaped body with a gas-impermeable film, said film being a polylaminate. (b2.1) filling the cup-shaped body with a measured dose of a product in granular or particulate form or in the form of a concentrated liquid; (b2.2) sealing the top opening of the cup-shaped body with a gas-impermeable film, said film being a multilayer comprising a first layer made of aluminum and a second layer made of polypropylene. (b3.1) piercing a bottom wall of the cup-shaped body; (b3.2) sealing the opening thus obtained by means of a multilayer comprising a layer made of aluminum and a layer made of polypropylene; (b3.3) arranging a filter on the bottom wall; (b3.4) filling the cup-shaped body with a measured dose of a product in granular or particulate form or in the form of a concentrated liquid; (b3.5) sealing the top opening of the cup-shaped body with a gas- impermeable film, said film being a multilayer comprising a first layer made of aluminum and a second layer made of polypropylene.