ABSORBING PRODUCT AND ABSORBING CORE FORMING CHANNELS GETTING WET Russian patent published in 2018 - IPC A61F13/532 

FIELD: human vital needs satisfaction.

SUBSTANCE: absorbing product (20) for personal hygiene, containing a top sheet (24) permeable to fluid, a back sheet (25) not permeable to fluid, an absorbing core (28), and a fibre layer (54). The absorbing core comprises a core sheath and an absorbing material (60) with superabsorbing polymers. The core sheath comprises an upper side (16) and a lower side (16') bonded to each other in one or more regions (26) substantially free of the absorbing material (60). The fibre layer (54) is at least partially attached to one side of the core sheath in one or more regions (26) substantially free of the absorbing material. When the absorbing material swells, the core sheath forms one or more channels (26') extended along the said one or more regions (26), essentially not containing the absorbing material. The formation of one or more of the said channels (26') in the absorbing core upon swelling of the absorbing material causes the formation of one or more corresponding grooves (29) in the fibre layer. The core clamping (27) can be designed in such a way that it will be delaminated in a predetermined manner as the absorbing core saturates fluid. The absorbing core (28) having such delamination characteristics is also provided.

EFFECT: increasing the reliability of the product.

15 cl, 16 dwg, 1 tbl