Filtration media for filtering particulate material from gas streams
AssigneeE.I. du Pont de Nemours and Company
InventorsHyun Lim, Hageun Suh, B. Wiseman
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Abstract
A composite fabric formed by depositing a web of nanofibers electroblown from a first polymer onto a first support web comprising fibers of larger average diameter than the nanofibers spun from a compatible material, in the absence of an adhesive between the webs, and solvent-bonding the webs together.
Claims22
A composite fabric comprising a web of electroblown polymeric nanofibers solvent-bonded to a first support web comprising fibers of larger average diameter than the nanofibers spun from a material compatible with said nanofibers, in the absence of an adhesive between the webs.
A process for forming a composite fabric, comprising electroblowing a web of polymeric nanofibers and a solvent therefor onto a moving support web comprising larger fibers spun from a material which is compatible with said nanofiber polymer, and applying a vacuum pressure between about 4 mm H2O and 170 mm H2O to the combined webs to solvent-bond the nanofiber web to the support web.
Dependencies are inferred from the claim text.