stage of the manufacturing process the impermeable material applied to the fabric surface forms a plurality of protuberances protrusions on the surface that can have various cross sectional shapes the protuberances ensure that the fibers on each side of the protuberances are well separated and are therefore prevented from interacting or becoming entangled with one another examples of the various cross sectional shapes for the protuberances include but are not limited to thin low profile rectangular shapes 40 shown in fig3 a square shapes 42 having sides 43 of equal lengths as shown in fig3 b high profile rectangular shapes 45 as depicted in fig3 c that have a height 50 equal to the thickness of the fiber layers being deposited on the fabric and shapes having a cross sectional profile designed to mechanically separate the fibers of the nonwoven web such as but not limited the triangular shape 55 in fig3 d and a rectangular shape 60 having chamfered corners 40 as depicted in fig3 e essentially any shape or material that produces individual nonwoven sheets on the fabric surface can be used to form the protuberances it is important that the materials used to construct the protuberances must be impermeable.