US 11,898,285 B2
Modified polypropylene spunbond non-woven fabric and preparation method thereof
Xiaohua Huang, Qingdao (CN); Qiang Cai, Qingdao (CN); Shichao Wang, Qingdao (CN); Weihua Mu, Qingdao (CN); Jie Liu, Qingdao (CN); Yongmei Ma, Qingdao (CN); Yu Liu, 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 Apr. 15, 2021, as Appl. No. 17/231,159.
Claims priority of application No. 202010303575.6 (CN), filed on Apr. 17, 2020.
Prior Publication US 2021/0324556 A1, Oct. 21, 2021
Int. Cl. D04H 3/16 (2006.01); D04H 3/007 (2012.01); D01F 1/10 (2006.01); D01F 6/46 (2006.01)
CPC D04H 3/16 (2013.01) [D01F 1/103 (2013.01); D01F 6/46 (2013.01); D04H 3/007 (2013.01)] 10 Claims
 
1. A preparation method of a modified polypropylene spunbond non-woven fabric, comprising:
modifying an organic compound to provide a modified nanocomposite material, the organic compound comprising tea polyphenol, naringin, and emodin, wherein the organic compound is in a weight percentage range of approximately 0.1%-5% based on a total weight of the modified polypropylene spunbond non-woven fabric,
wherein modifying the organic compound includes:
adding the organic compound into water to form a solution where the organic compound is fully dissolved; and adding a porous nanomaterial into the solution to form a mixture and stirring the mixture to form the modified nanocomposite material,
wherein the porous nanomaterial includes one or more of montmorillonite, zeolite powder, porous nano-TiO2 microspheres, and porous nano-SiO2 microspheres;
preparing a composite modifier, by performing: adding a fat-soluble solvent into the modified nanocomposite material, and grinding the modified nanocomposite material to provide the composite modifier; and
preparing the polypropylene spunbond non-woven fabric, by performing:
melt-mixing polypropylene chips in a twin-screw extruder,
after a melt of the polypropylene chips is formed in the twin-screw extruder, adding the composite modifier into the twin-screw extruder, and mixing the composite modifier with the melt of the polypropylene chips to form a mixed melt,
spinning and pulling the mixed melt to form a fiber net, and
hot-rolling the fiber net into a fabric by a hot-rolling machine to provide the modified polypropylene spunbond non-woven fabric.