Title:
NONWOVEN FABRIC AND FIBER PRODUCT
Document Type and Number:
WIPO Patent Application WO/2014/142323
Kind Code:
A1
Abstract:
Provided is a spunbond nonwoven fabric comprising a core-sheath composite fiber having: a core part comprising a core component containing a propylene-based resin (A) satisfying (a) to (e) below; and a sheath part comprising a sheath component containing an ethylene-based resin.
(a) [mmmm] = 20 to 60 mol%
(b) [mm] × [rr]/[mr]2 ≤ 2.0
(c) Weight average molecular weight (Mw) = 10,000 to 200,000
(d) Molecular weight distribution (Mw/Mn) < 4.0
(e) The melting point (Tm - D), defined as the top of the peak observed, using a differential scanning calorimeter (DSC), furthest on the high-temperature side of a melting endothermic curve obtained by holding the resin for five minutes at -10ºC in a nitrogen atmosphere and then raising the temperature by 10ºC/minute, is 0 to 120ºC.
Inventors:
KOORI YOHEI (JP)
TAKEBE TOMOAKI (JP)
MINAMI YUTAKA (JP)
TAKEBE TOMOAKI (JP)
MINAMI YUTAKA (JP)
Application Number:
PCT/JP2014/056979
Publication Date:
September 18, 2014
Filing Date:
March 14, 2014
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
D04H3/007; A61F13/15; C08L23/04; C08L23/10; D01F8/06; D04H3/147
Domestic Patent References:
| WO2011108504A1 | 2011-09-09 | |||
| WO2003087172A1 | 2003-10-23 |
Foreign References:
| JP2013032607A | 2013-02-14 | |||
| JP2009209506A | 2009-09-17 | |||
| JPH11107153A | 1999-04-20 | |||
| JP2012237081A | 2012-12-06 | |||
| JPH11140766A | 1999-05-25 | |||
| JPH11241224A | 1999-09-07 | |||
| JP2009209506A | 2009-09-17 |
Other References:
A. ZAMBELLI ET AL., MACROMOLECULES, vol. 6, 1973, pages 925
A. ZAMBELLI ET AL., MACROMOLECULES, vol. 8, 1975, pages 687
A. ZAMBELLI ET AL., MACROMOLECULES, vol. 8, 1975, pages 687
Attorney, Agent or Firm:
OHTANI, Tamotsu (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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