MULTI-LAYERED NON-WOVEN STRUCTURE FOR USE AS COMPONENT OF DISPOSABLE ABSORBENT PRODUCTS Russian patent published in 2021 - IPC A61F13/53 

FIELD: layered products.

SUBSTANCE: present invention relates to multi-layered non-woven structures used as components of disposable absorbent products and clothing, containing superabsorbing particles and, thus, acting as a core. Thus, the invention provides a possibility of penetration of the biological bodily fluids from the first layer acting as a reception layer into the third layer containing SAP particles, wherein the second non-woven layer serves to reduce the volume of liquid per unit surface as a standard dispersion layer. However, the second layer of the invention additionally acts as a return valve, preventing or at least strongly limiting any transfer of liquid from the third to the first layer. SAP-free channels can be additionally constructed to improve the input properties and the rewetting property of the multi-layered non-woven sheet material with a reception and distribution layer.

EFFECT: production of multi-layered non-woven structures for use as components of disposable absorbent products and clothing.

14 cl, 12 dwg, 1 tbl