# US 11,898,285 B2 · Modified polypropylene spunbond non-woven fabric and preparation method thereof

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- Number: US 11,898,285 B2
- Document ID: US11898285B2
- Status: Granted
- Kind: B2
- Application number: 17/231,159
- Filed: 2021-04-15
- Published: 2021-10-21
- Granted: 2024-02-13
- Earliest claimed: 2020-04-17
- Assignees: Bestee Material (Tsingtao) Co., Ltd.
- Applicants: Bestee Material (Tsingtao) Co., Ltd.
- Inventors: Xiaohua Huang; Qiang Cai; Shichao Wang; Weihua Mu; Jie Liu; Yongmei Ma; Yu Liu; Li Zhen
- Web page: https://patentgrep.com/patent/US11898285B2

## CPC

- D01F 6/06: from polypropylene
- D04H 3/16: with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
- D01F 1/103: {Agents inhibiting growth of microorganisms}
- D01F 6/46: of polyolefins
- D04H 3/007: Addition polymers
- D04H 3/14: with bonds between thermoplastic yarns or filaments produced by welding
- D01F: CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D04H: MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL (weaving D03; knitting D04B; braiding D04C; net-making D04G; sewing D05B; tufting D05C; finishing non-woven fabrics D06); FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING {; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION}(non-woven fabrics having an intermediate or external layer of a different kind, e.g. of woven fabric, B32B)

## Abstract

A modified polypropylene spunbond non-woven fabric and a preparation method of the modified polypropylene spunbond non-woven fabric are provided. The modified polypropylene spunbond non-woven fabric contains a modified nanocomposite material including an organic compound, the organic compound including one of tea polyphenol, naringin, and emodin. 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

The method according to claim 1, wherein:
the fat-soluble solvent includes one or more of wax, high-grade fatty acid glyceride, and stearic acid.

### Claim 3 (depends on 1)

The method according to claim 1, wherein:
grinding the modified nanocomposite material includes a grinding particle size in a range of approximately 8000 mesh-10000 mesh.

### Claim 4 (depends on 1)

The method according to claim 1, wherein:
a mass ratio of the organic compound over the water is in a range of approximately 1:(5-10).

### Claim 5 (depends on 1)

The method according to claim 1, wherein:
the naringin is dissolved at a heated temperature in a range of approximately 50° C.-80° C.

### Claim 6 (depends on 1)

The method according to claim 1, wherein:
the emodin is dissolved by further adding sodium carbonate.

### Claim 7 (depends on 1)

The method according to claim 1, wherein:
a mass ratio of the organic compound over the porous nanomaterial is in a range of approximately 1:(5-10).

### Claim 8 (depends on 1)

The method according to claim 1, wherein:
a stirring speed for the mixture containing the porous nanomaterial is in a range of approximately 30 r/min-60 r/min, and a stirring duration is in a range of approximately 30 minutes-120 minutes.

### Claim 9 (depends on 1)

A modified polypropylene spunbond non-woven fabric, prepared by the method according to claim 1.

### Claim 10 (depends on 1)

The method according to claim 1, wherein adding the fat-soluble solvent into the modified nanocomposite material includes absorbing the fat-soluble solvent into the modified nanocomposite material.