The present invention generally relates to producing sub micron fibers, and more specifically relates to {TAIL ~ a process} and {HEAD ~ apparatus} for effecting formation of sub micron fibers by fibrillation of polymer films, and nonwoven materials and articles incorporating them 
The present invention generally relates to producing sub micron fibers , and more specifically relates to { TAIL ~ a process } and { HEAD ~ apparatus } for effecting formation of sub micron fibers by fibrillation of polymer films , and nonwoven materials and articles incorporating them
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