Lenzing's Lyocell Dry range illustrates how fibre size changes nonwoven structure. The fine 1.3 dtex variant can place more fibres into the same space at a given basis weight, producing a denser material than the 1.7 dtex standard version.

Illustrative image
Illustrative image.

The 6.3 dtex coarse variant creates a more open structure with larger pores between fibres, allowing greater air or liquid flow. These differences support distinct hygiene and filtration applications, where the arrangement of fibres matters even though the textile has no conventional warp-and-weft weave.