Title:
ELECTRET MASTER BATCH FOR MELT-BLOWN NON-WOVEN FABRIC FOR LOW-RESISTANCE MASK AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/000939
Kind Code:
A1
Abstract:
Disclosed are an electret master batch for melt-blown non-woven fabric for a low-resistance mask and a preparation method therefor. The electret master batch for the melt-blown non-woven fabric for the low-resistance mask is prepared from the following components in percentage by weight: 65-85% of polypropylene resin; 1-3% of electret powder; 5-15% of a dispersant; 3-10% of a nucleating agent; 3-10% of a softening agent; and 0.05-0.5% of a processing aid. The softening agent is erucamide. The polypropylene resin is homo-polypropylene and/or co-polypropylene, and the melt index (MFI) thereof is less than 230°C/2.16 kg and is not lower than 1000 g/10 min. According to the electret master batch, the softening agent, the nucleating agent and other components are added, so that when the electret master batch and the ultra-high melt index polypropylene are mixed to be used for producing the melt-blown non-woven fabric for the mask, the obtained melt-blown non-woven fabric for the mask may have a low respiratory resistance while having high filtering efficiency, and therefore, the electret master batch is particularly suitable for being used as a mask material. The formula does not greatly adjust the formula of the existing electret master batch, and is easy to implement.
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Inventors:
LI LI (CN)
WANG BIN (CN)
WANG DAOJUAN (CN)
YANG YOUQIANG (CN)
YANG XI (CN)
CHENG WENJIAN (CN)
LIU LEWEN (CN)
YANG XIAOYUN (CN)
CHEN PINGXU (CN)
YE NANBIAO (CN)
HUANG XIANBO (CN)
WANG BIN (CN)
WANG DAOJUAN (CN)
YANG YOUQIANG (CN)
YANG XI (CN)
CHENG WENJIAN (CN)
LIU LEWEN (CN)
YANG XIAOYUN (CN)
CHEN PINGXU (CN)
YE NANBIAO (CN)
HUANG XIANBO (CN)
Application Number:
PCT/CN2020/129278
Publication Date:
January 06, 2022
Filing Date:
November 17, 2020
Export Citation:
Assignee:
KINGFA SCI &TECH CO LTD (CN)
GUANGDONG KINGFA TECH CO LTD (CN)
GUANGDONG KINGFA TECH CO LTD (CN)
International Classes:
C08J3/22; C08L23/12; C08K5/20; D04H1/56
Domestic Patent References:
| WO2020060746A1 | 2020-03-26 |
Foreign References:
| CN111484678A | 2020-08-04 | |||
| CN111235666A | 2020-06-05 | |||
| CN109310541A | 2019-02-05 | |||
| CN109354767A | 2019-02-19 | |||
| CN102653610A | 2012-09-05 | |||
| CN110358189A | 2019-10-22 | |||
| CN102105528A | 2011-06-22 | |||
| CN111303539A | 2020-06-19 | |||
| CN1420952A | 2003-05-28 | |||
| JP2017179658A | 2017-10-05 |
Attorney, Agent or Firm:
YOGO PATENT AND TRADEMARK AGENCY LIMITED COMPANY (CN)
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