US 12,442,108 B2
Protective masks made with polymer-based materials
Siu Wah Wong, Hong Kong (CN); Ho Wang Tong, Hong Kong (CN); Chi Hang Yu, Hong Kong (CN); Yu Hang Leung, Hong Kong (CN); and Wing Man Chan, Hong Kong (CN)
Assigned to NANOSHIELDS TECHNOLOGY LIMITED, Hong Kong (CN)
Appl. No. 18/560,413
Filed by NANOSHIELDS TECHNOLOGY LIMITED, Hong Kong (CN)
PCT Filed May 18, 2022, PCT No. PCT/CN2022/093561
§ 371(c)(1), (2) Date Nov. 13, 2023,
PCT Pub. No. WO2022/257716, PCT Pub. Date Dec. 15, 2022.
Claims priority of provisional application 63/202,379, filed on Jun. 9, 2021.
Prior Publication US 2024/0150937 A1, May 9, 2024
Int. Cl. B29C 48/15 (2019.01); A41D 13/11 (2006.01); B32B 37/12 (2006.01); D01D 5/00 (2006.01); D01F 1/10 (2006.01); B29K 25/00 (2006.01); B29K 27/00 (2006.01); B29K 27/12 (2006.01); B29K 33/00 (2006.01); B29K 71/00 (2006.01); B29K 75/00 (2006.01); B29K 79/00 (2006.01); B29K 105/00 (2006.01)
CPC D01D 5/0038 (2013.01) [A41D 13/11 (2013.01); D01F 1/103 (2013.01); B29K 2025/08 (2013.01); B29K 2027/12 (2013.01); B29K 2027/16 (2013.01); B29K 2033/12 (2013.01); B29K 2071/02 (2013.01); B29K 2075/00 (2013.01); B29K 2079/08 (2013.01); B29K 2105/0005 (2013.01); B29K 2105/0011 (2013.01); B29K 2105/0088 (2013.01); B32B 2037/1253 (2013.01); D10B 2321/042 (2013.01); D10B 2321/08 (2013.01); D10B 2321/121 (2013.01); D10B 2331/041 (2013.01); D10B 2331/06 (2013.01); D10B 2331/10 (2013.01); D10B 2331/14 (2013.01); D10B 2401/021 (2013.01); D10B 2401/13 (2013.01); D10B 2505/04 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of forming an interlaced structure of polymer-based materials, comprising:
applying adhesive to a substrate;
electrospinning a first polymer solution onto said substrate from a first group of spinning electrodes;
electrospinning a second polymer solution onto said substrate from a second group of spinning electrodes, wherein said first group of spinning electrodes and said second group of spinning electrodes are located adjacent to each other, and
applying hot air to dry the polymer-based materials electrospun from said first polymer solution and said second polymer solution;
wherein throughout the whole process, said substrate moves in a direction from the first group of spinning electrodes to the second group of spinning electrodes such that a layer of fibers from the first polymer solution is formed on said substrate and a layer of fibers from the second polymer solution is formed on said layer of fibers from the first polymer;
whereby an interlaced structure comprising the fibers from the first polymer solution and the fibers from the second polymer solution is formed between the layer of fibers from the first polymer solution and the layer of fibers from the second polymer solution.