Method and apparatus for making a tablet of powdered products for espresso beverage extraction

A method of making a tablet for hot espresso beverage extraction includes the steps of grinding a brewable product to obtain a powder having a substantially uniform particle size, dosing a predetermined amount of the ground product powder, moistening the powdered product dose, homogenizing the moistened mixture to obtain a powdered product with a substantially uniform moisture content, forming the powdered product dose to obtain a disk-shaped or prismatic tablet, and supplying an amount of energy to the tablet to obtain a substantially compact and integral item. The step of supplying energy is carried out by irradiating the tablet with an electromagnetic wave beam to overheat and partially bake and/or sinter the particles of the powdered product and impart a relatively compact and self-supporting construction to the finished tablet. The electromagnetic wave irradiation step is carried out at the end of the forming step while continuously compressing the dose. 1. An arrangement for making a powdered product tablet for hot extraction of an espresso beverage using one or more ground brewable products , comprising:a volumetric dosing or forming unit adapted to isolate a product dose of a predetermined amount of a ground product; andan apparatus comprising:a forming unit having a hollow body configured to receive the product dose in moistened conditioned;a compression member associated with the hollow body and configured to compress the product dose collected therein and form a tablet having a desired shape; anda unit supplying energy to the tablet formed within the hollow body, the unit supplying energy comprising an irradiating device that emits a microwave beam,wherein the apparatus further comprises a spindle, vibration mixer, or other homogenizing device configured to stir the ground product and provide an essentially uniform moistened mixture, andwherein the irradiating device comprises a microwave generator connected to an antenna emitting an electromagnetic wave ...

Method and apparatus for making a tablet of powdered products for espresso beverage extraction

A method of making a tablet for hot espresso beverage extraction includes the steps of grinding a brewable product to obtain a powder having a substantially uniform particle size, dosing a predetermined amount of the ground product powder, moistening the powdered product dose, homogenizing the moistened mixture to obtain a powdered product with a substantially uniform moisture content, forming the powdered product dose to obtain a disk-shaped or prismatic tablet, and supplying an amount of energy to the tablet to obtain a substantially compact and integral item. The step of supplying energy is carried out by irradiating the tablet with an electromagnetic wave beam to overheat and partially bake and/or sinter the particles of the powdered product and impart a relatively compact and self-supporting construction to the finished tablet. The electromagnetic wave irradiation step is carried out at the end of the forming step while continuously compressing the dose.

Method and apparatus for making a tablet of powdered products for espresso beverage extraction

A method of making a tablet for hot espresso beverage extraction includes the steps of grinding a brewable product to obtain a powder having a substantially uniform particle size, dosing a predetermined amount of the ground product powder, moistening the powdered product dose, homogenizing the moistened mixture to obtain a powdered product with a substantially uniform moisture content, forming the powdered product dose to obtain a disk-shaped or prismatic tablet, and supplying an amount of energy to the tablet to obtain a substantially compact and integral item. The step of supplying energy is carried out by irradiating the tablet with an electromagnetic wave beam to overheat and partially bake and/or sinter the particles of the powdered product and impart a relatively compact and self-supporting construction to the finished tablet. The electromagnetic wave irradiation step is carried out at the end of the forming step while continuously compressing the dose. 1. A method of making a tablet for hot extraction of espresso beverages , comprising the steps of:a) grinding one or more brewable products to obtain a powder having a substantially uniform particle size;b) dosing a predetermined amount of said ground product powder;c) moistening the powdered dose;d) homogenizing the moistened dose to a substantially uniform residual moisture;e) forming the moistened dose by compression to form a tablet (C) having a desired shape; andf) supplying an amount of energy to said tablet (C) to obtain a substantially compact and integral item;wherein said step f) of supplying energy is carried out remotely by irradiating g) the tablet (C) with an electromagnetic wave beam (F) to obtain overheating and partial baking or sinterization of the powdered product particles and to impart a substantially compact and self-supporting structure to the finished tablet (C) without any outer wrapping enclosure.2. The method as claimed in claim 1 , wherein said step of irradiating with an ...

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