A pocket, to form particulate material as absorbent for hygienic products, includes: a substrate shaped to the absorbent padding； a grid-shaped support, couplable to support the substrate during suction of the particulate material through the substrate and includes a curved external face, an internal face, a pair of greater side faces and a pair of lesser side faces that are opposite one another, openings enable gas to flow from the external face to the internal face during suction. A method for making the pocket includes making at least one of the external openings of a different shape and/or dimension from one of the internal openings, and making the external walls and the internal walls by layer additive manufacturing.
