Sheet of filtration, separation or reaction elements, and a module comprising such a sheet

A sheet of elements for filtration, separation, or reaction, wherein said elements are joined together by inter-element linkages making, with respect to the axis of the elements, an angle of 30 to 150°, and wherein each of said elements is directly linked to at most 4 other elements, the sheet of elements exhibiting the three following dimensionless numbers:

• A, a number of inter-element linkages per filtering element, comprised between 1 and 20;
• E, a number of filtering elements per inter-element linkage, comprised between 2 and 2000;
• and
• N, a total number of filtering elements, comprised between 10 and 2000.