High bulk nonwoven sorbent with fiber density gradient

摘要

Disclosed is an improved high sorbency nonwoven fabric and its use particularly as an oilsorb material. The high sorbency nonwoven is preferably made by multi-bank meltblowing and different perturbing thermoplastic fibers of, for example, propylene polymers in separate banks to provide a fiber density gradient through the thickness of the fabric. The sorbent nonwovens have high bulk and strength, oil capacity and oil absorption rates making them particularly suited to such applications. Treatments and additives for such materials are also disclosed.