Multi-layer absorbent product and process for preparing absorbent layer

A multi-layer absorbent product, comprising:

• a first layer which is liquid permeable or liquid impermeable;
• and
• a layer of (i) nonwoven, woven or knitted textile material comprising a network of fibers or (ii) textured plastic yarn comprising a network of surface pores and being disposed next to the first layer, said layer of textile material or textured plastic having a top surface with uniformly spaced super absorbent polymer (SAP) deposits of a synthetic polymer having monomers bearing carboxylic acid or carboxylic acid anhydride groups crosslinked to a natural polymer having amino and/or hydroxyl groups capable of crosslinking to the synthetic polymer in the absence of non-polymeric crosslinking agent on said network of fibers or surface pores, and said top surface with uniformly spaced deposits being disposed against a surface of the first layer,
• wherein said SAP deposits of natural polymer crosslinked to synthetic polymer forms a continuous SAP crosslinked polymer network that covers the fibers or pore walls underneath the SAP deposits and interpenetrates the network of fibers or network of pores acting as a scaffold to interconnect the SAP crosslinked polymer network with the fiber or pore network, and
• said layer of (i) nonwoven, woven or knitted textile material or (ii) textured plastic yarn with said SAP deposits have a water absorbency at least 10% higher than the absorbency of the same layer without said SAP deposits.