High bulk nonwoven sorbent
AssigneeKimberly-Clark Worldwide, Inc.
InventorsBryan David Haynes, Jeffrey Lawrence McManus, Jark Chong Lau
Life of this patent
Estimating the term…
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 meltblowing and perturbing thermoplastic fibers of, for example, propylene polymers. 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.
Claims18
A high bulk nonwoven sorbent fabric comprising an array of interbonded microfibers having a density of no more than about 0.10 g/cc and a pore structure providing an absorbtion capacity of at least about 10 g/g.
A high bulk nonwoven sorbent fabric comprising an array of thermoplastic polyolefin microfibers formed by meltblowing under conditions where said microfibers are perturbed to produce a fabric density of no more than about 0.10 g/cc, and an absorption capacity of at least about 10 g/g.
An oilsorb product comprising an array of meltblown propylene polymer microfibers formed by meltblowing under conditions where said microfibers are perturbed to produce a fabric density of no more than about 0.06 g/g, an oil capacity of at least 20 g/g, and an oil rate of no more than about 2 sec.
Dependencies are inferred from the claim text.