A forming pocket, which is suitable for receiving particulate material and forming conglomerates from the particulate material to be used as absorbent padding for hygienic products, comprises: an external forming substrate (3) which is suitable for receiving the particulate material, which is provided with openings and has a shape conjugated to the form of the absorbent padding to be made； a grid-shaped supporting structure (10； 30), which is couplable with the external substrate (3) to support the external substrate (3) during suction of the particulate material through the external substrate (3) and comprises a curved external face (11), intended for contact with the external substrate (3) and of a shape conjugated to the shape of the external substrate (3), an internal face (12), opposite the external face (11), a pair of greater side faces (13) that are opposite one another and a pair of lesser side faces (14) that are opposite one another, and through openings (17a, 17b, 18a, 18b) extending between the external face (11) and the internal face (12) to enable a gas to flow from the external face (11) to the internal face (12) during suction. A method for making the forming pocket comprises making at least one external layer (15) of the supporting structure (10； 30) and at least one internal layer (16) of the supporting structure (10； 30) that are superimposed and have respectively external openings (17a, 17b) and internal openings (18a, 18b) bounded by external walls (19a, 19b) and by internal walls (20a, 20b), in which the external openings ( 17a, 17b) and the internal openings (18a, 18b) are arranged superimposed so as to define said through openings (17a, 17b, 18a, 18b)； and in which the method further comprises making at least one of the external openings (17a, 17b) of a different shape and/or dimension from one of the internal openings (18a, 18b) on which it is superimposed by using a layer additive manufacturing process, i.e. 3D printing to make the externa
