High bulk nonwoven sorbent with fiber density gradient

Details High bulk nonwoven sorbent with fiber density gradient High bulk nonwoven sorbent with fiber density gradient

1996-11-15

1998-09-22

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

2105021, 210922, 428903, 442351, 442400, B32B 702

Patent

active

058111786

ABSTRACT:
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.

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