The engineering of specific density and porosity gradients within a fiber network. This controls fluid distribution and retention efficiency in hygiene products.
The keywords focus on mechanical integration and partial bonding between the core wrap, intermediate layers, and the absorbent core. This indicates a failure mode where layers separate during use, leading to core instability and reduced fluid management efficiency.
Standard absorbent cores often lack the physical space required for superabsorbent polymers to expand fully upon wetting, leading to gel blocking and reduced capacity. Providing dedicated chambers or profiled distribution allows for unhindered swelling and improved fluid intake rates.