Title:
SPUN-BONDED NONWOVEN FABRIC, FILTER MEDIA FOR DUST COLLECTOR PLEATED FILTER, DUST COLLECTOR PLEATED FILTER, AND HIGH-AIRFLOW PULSE-JET DUST COLLECTOR
Document Type and Number:
WIPO Patent Application WO/2021/132403
Kind Code:
A1
Abstract:
This spun-bonded nonwoven fabric is constituted from a thermoplastic continuous filament comprising a high-melting-point component and a low-melting-point component, the stiffness in the MD direction of the spun-bonded nonwoven fabric being 40-80 mN inclusive, and in a cross section of the nonwoven fabric, the thickness tA from one surface to the other surface of a non-fused projecting part, the thickness tB from one surface to the other surface of a recessed section obtained by being fused, and distances from the one surface of the projecting part to the one surface of the recessed section, the distances being defined as tC and tD (where tC < tD), are in the relationships shown in formulae (1) and (2) below. 0.5 ≤ 1 - tB/tA < 1.0 (1)
0.65 < tC/tD < 1.0 (2)
Inventors:
IKEJIRI YUKI (JP)
YOSHIDA JUN (JP)
KITAMURA KOJI (JP)
YOSHIDA JUN (JP)
KITAMURA KOJI (JP)
Application Number:
PCT/JP2020/048303
Publication Date:
July 01, 2021
Filing Date:
December 23, 2020
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
D04H3/147; B01D39/16
Domestic Patent References:
| WO1997037071A1 | 1997-10-09 |
Foreign References:
| JPH09192426A | 1997-07-29 | |||
| JPS5422874B2 | 1979-08-09 | |||
| JP5298803B2 | 2013-09-25 | |||
| JP4522671B2 | 2010-08-11 |
Other References:
See also references of EP 4083293A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
Download PDF: