US 11,807,964 B2
Plant-based functional polypropylene spunbond non-woven fabric and preparation method thereof
Xiaohua Huang, Qingdao (CN); Xiaoqian Huang, Qingdao (CN); Yu Liu, Qingdao (CN); Jie Liu, Qingdao (CN); Xiaolong Huang, Qingdao (CN); and Li Zhen, Qingdao (CN)
Assigned to BESTEE MATERIAL (TSINGTAO) CO., LTD., Qingdao (CN)
Filed by BESTEE MATERIAL (TSINGTAO) CO., LTD., Qingdao (CN)
Filed on Sep. 1, 2020, as Appl. No. 17/009,015.
Claims priority of application No. 201910822105.8 (CN), filed on Sep. 2, 2019.
Prior Publication US 2021/0062380 A1, Mar. 4, 2021
Int. Cl. D01F 1/10 (2006.01); D04H 3/16 (2006.01); D01F 6/46 (2006.01); D04H 3/007 (2012.01)
CPC D04H 3/16 (2013.01) [D01F 1/10 (2013.01); D01F 6/46 (2013.01); D04H 3/007 (2013.01)] 13 Claims
 
1. A preparation method of a plant-based functional polypropylene spunbond non-woven fabric, comprising:
preparing a modified plant-based functional polypropylene masterbatch, including:
melting a polypropylene resin,
adding antioxidants into the molten polypropylene resin and stirring for forming a fully mixed component, the antioxidants including a combination of dihydrotanshinone I, epicatechin, and glycerin, and
after forming the fully mixed component, adding a modifier and a plant herb water-soluble extract into the fully mixed component comprising the antioxidants and the molten polypropylene resin, the modifier including a combination of sodium-n-methyl-n-oleyl taurate and cocamidopropyl betaine,
mixing the modified plant-based functional polypropylene masterbatch with a polypropylene raw material to obtain a polypropylene mixture,
preparing a spinning melt by melting the polypropylene mixture,
preparing a polypropylene fiber bundle by performing a spinning process of the spinning melt
performing a post-processing process on the polypropylene fiber bundle, the post-processing process including towing, netting, pressure-rolling, hot-rolling, winding of the polypropylene fiber bundle
after the towing and before the pressure rolling of the polypropylene fiber bundle, performing an oiling process on the polypropylene fiber bundle using an oil including a combination of polyvinylpyrrolidone and emulsified silicone oil.