Electroblowing web formation process
AssigneeE.I. du Pont de Nemours and Company
InventorsMichael Bryner, Jack Armantrout, John Armstrong, Benjamin Johnson
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Abstract
An improved electroblowing process is provided for forming a fibrous web of nanofibers wherein polymer stream is issued from a spinning nozzle in a spinneret with the aid of a forwarding gas stream, passes an electrode and a resulting nanofiber web is collected on a collector. The process includes applying a high voltage to the spinneret and grounding the electrode such that an electric field is generated between the spinneret and the electrode of sufficient strength to impart an electrical charge on the polymer as it issues from the spinning nozzle.
Claims11
An electroblowing process for forming a fibrous web comprising:
- (a) issuing an electrically charged polymer stream from a spinning nozzle in a spinneret;
- (b) passing the polymer stream by an electrode which is substantially grounded, wherein a voltage is applied to the spinneret such that an electric field is generated between the spinneret and the electrode of sufficient strength to impart said electrical charge to the polymer stream as it issues from the spinning nozzle;
- and
- (c) collecting nanofibers formed from the charged polymer stream on a collector as a fibrous web.
Dependencies are inferred from the claim text.