Superabsorbent Polymer Integration in Airlaid
topic
Superabsorbent polymer particle incorporation in airlaid webs uses metered screw or vibratory feeders delivering SAP particles of 100 to 800 micrometre diameter into the airlaid forming head air stream at defined inclusion levels of 20 to 70 percent by weight, with SAP distribution uniformity across the web width and through the web thickness governing the fluid retention capacity and gel blocking resistance of the finished absorbent core.
Role
Enables the high fluid retention capacity of modern thin absorbent hygiene products by incorporating superabsorbent polymers that absorb 30 to 60 times their weight in liquid within the airlaid fibre matrix, with SAP particle size and distribution uniformity in the web determining both the absorption rate and the maximum retention capacity that are the primary performance parameters of absorbent hygiene product cores.