Title:
SPUN-BONDED NONWOVEN FABRIC AND SANITARY MATERIAL
Document Type and Number:
WIPO Patent Application WO/2022/210047
Kind Code:
A1
Abstract:
This spun-bonded nonwoven fabric comprises fibers which are formed of a resin composition that contains a propylene polymer (A) and at least one polymer (B) that is selected from the group consisting of polyolefins (excluding the propylene polymer (A)) and polyesters. The fibers have a sea-island structure. The fibers include those fibers wherein, among the island phases in a cross-section of each fiber, the cross-section being perpendicular to the axial direction of the fiber, the ratio of the island phases having a diameter less than 0.32 μm is 60% or more on a number basis. With respect to this spun-bonded nonwoven fabric, the ratio of the tensile strength (SMD) in the machine direction (MD) to the tensile strength (SCD) in a direction (CD) that is perpendicular to the machine direction (MD), namely SMD/SCD is from 2.0 to 5.1.
Inventors:
SAITA SHOHEI (JP)
ICHIKAWA TAIICHIROU (JP)
KANAYA HIROTAKA (JP)
ICHIKAWA TAIICHIROU (JP)
KANAYA HIROTAKA (JP)
Application Number:
PCT/JP2022/012798
Publication Date:
October 06, 2022
Filing Date:
March 18, 2022
Export Citation:
Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
D01F8/06; A61F13/47; A61F13/49; D01F6/46; D01F8/14; D04H3/16
Domestic Patent References:
| WO2009145105A1 | 2009-12-03 | |||
| WO2011129433A1 | 2011-10-20 | |||
| WO2020158875A1 | 2020-08-06 | |||
| WO2019146656A1 | 2019-08-01 | |||
| WO2020100654A1 | 2020-05-22 | |||
| WO2017006972A1 | 2017-01-12 | |||
| WO2007114102A1 | 2007-10-11 | |||
| WO2004065680A1 | 2004-08-05 | |||
| WO2011129433A1 | 2011-10-20 | |||
| WO2012070518A1 | 2012-05-31 |
Foreign References:
| JP2020143411A | 2020-09-10 | |||
| JP2020147890A | 2020-09-17 | |||
| JP2021038496A | 2021-03-11 | |||
| JP2001179867A | 2001-07-03 | |||
| JP2021058789A | 2021-04-15 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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