Title:
SPUN-BONDED NONWOVEN FABRIC, MULTILAYER FILTER MEDIUM, FILTER MEDIUM FOR PLEATED FILTERS, AND PLEATED FILTER
Document Type and Number:
WIPO Patent Application WO/2021/132411
Kind Code:
A1
Abstract:
The present invention provides a spun-bonded nonwoven fabric which has excellent stiffness and weight uniformity, while having excellent dust collection performance and excellent mechanical characteristics. A spun-bonded nonwoven fabric according to the present invention is configured from thermoplastic continuous filaments, while having a fused part that is partially fused; and this spun-bonded nonwoven fabric has a weight CV value of 6.0% or less, an apparent density of from 0.20 g/cm3 to 0.30 g/cm3, a bending resistance of from 3 mN to 50 mN, and a weight of from 90 g/m2 to 150 g/m2.
Inventors:
MIZOGAMI SHINOBU (JP)
YOSHIDA JUN (JP)
KITAMURA KOJI (JP)
YOSHIDA JUN (JP)
KITAMURA KOJI (JP)
Application Number:
PCT/JP2020/048314
Publication Date:
July 01, 2021
Filing Date:
December 23, 2020
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B01D39/16; D04H3/011; D04H3/147; D04H3/16
Domestic Patent References:
| WO2017110365A1 | 2017-06-29 | |||
| WO2017038977A1 | 2017-03-09 | |||
| WO2020004007A1 | 2020-01-02 |
Foreign References:
| JPS6218661B2 | 1987-04-23 | |||
| JP2013154269A | 2013-08-15 | |||
| JP2018061924A | 2018-04-19 | |||
| JP2006034216A | 2006-02-09 | |||
| JPS6269874A | 1987-03-31 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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