Method to produce micro and nanofibers with controlled diameter and large yield

US11384456B2 · kind B2 · utility

Assignee

• DREXEL UNIVERSITY · US

Inventors

• Li Han · Wynnebrook Manor, US
• Mingkun Wang · Philadelphia, US
• Chunxiao Cui · Philadelphia, US
• Alisa Morss Clyne · Ardmore, US
• Momtaz Alhindi · Horsham, US
• Jeffrey Krystek · Newtown, US
• Victor Micucci · Riverside, US
• Evan Ostrow · Penllyn, US
• Sabah Shafi · Turnersville, US
• Lin Han · San Jose, US
• Lanziye He · Philadelphia, US

Key dates

• Filing date: Oct 30, 2020
• Grant date: Jul 12, 2022
• Expiry date: Nov 17, 2040

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01F4/00
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

In one embodiment, the present invention is a method for producing microfibers comprising the steps of: (a) providing a base material; (b) forming the base material in a ring; (c) gripping opposing ends of the ring; (d) flipping one of the opposing ends relative to the other of the opposing ends, forming an upper portion and a lower portion; (e) folding the upper portion onto the lower portion; (f) stretching the folded upper and lower portions; and (g) repeating steps (d)-(f) as desired.