Patent ID: 7793357

Claim:
A method of producing chitosan non-woven fabrics, comprising in sequence: dissolving chitosan in an acidic solution to form a chitosan acidic solution; extruding the chitosan acidic solution to form a chitosan fibrous stream; ejecting a solidifying agent to form a solidifying agent stream; combining the chitosan fibrous stream and the solidifying agent stream to form at least one pre-solidified chitosan fiber, wherein the chitosan fibrous stream and the solidifying agent flow forms a non-zero first angle that is less than 90°; ejecting a high-pressure air on the pre-solidified chitosan fiber to stretch the chitosan fiber, wherein the high-pressure air and the pre-solidified chitosan fiber form a non-zero second angle that is less than 90°; and collecting the chitosan fiber to form chitosan non-woven fabrics.