THREE-DIMENSIONAL NONWOVEN MATERIALS AND METHODS FOR PRODUCTION THEREOF Russian patent published in 2024 - IPC A61F13/512 

FIELD: nonwoven materials.

SUBSTANCE: in one embodiment, a nonwoven material comprising a plurality of fibers can comprise a first surface and a second surface, wherein the first surface is opposite to the second surface, and the perforated zone. Perforated area may comprise a plurality of nodes extending from a base plane, on a first surface, a plurality of connecting webs connecting the plurality of nodes to each other, wherein a large portion of the plurality of nodes comprises at least three connecting webs connected to adjacent nodes, and a plurality of holes providing an open area in percentage for the perforated area of the nonwoven material from 10% to 60%, as determined by the test method based on analysis of the material sample.

EFFECT: disclosed are three-dimensional nonwoven materials and methods of making such materials.

20 cl, 2 tbl, 31 dwg