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Title:
SPUN-BONDED NONWOVEN FABRIC, SANITARY MATERIAL AND METHOD FOR MANUFACTURING SPUN-BONDED NONWOVEN FABRIC
Document Type and Number:
WIPO Patent Application WO/2019/146656
Kind Code:
A1
Abstract:
A spun-bonded nonwoven fabric that comprises a fiber formed of a composition, said composition containing a propylene homopolymer having a melting point of 140°C or higher, a polyethylene and at least one kind of polymer selected from the group consisting of polymer (I) and polymer (II), wherein the fiber has a sea-island structure and, in a cross section along the long axis direction of the fiber, the average length of the island phase is 1-500 μm inclusive, and a method for manufacturing the spun-bonded nonwoven fabric. Polymer (I) is a random copolymer of propylene with an α-olefin having a specific number of carbon atoms and polymer (II) is a propylene homopolymer having a melting point of lower than 120°C and satisfying a specific requirement in physical property.

Inventors:
ICHIKAWA TAIICHIRO (JP)
SHIMADA KOICHI (JP)
MOTOMURA SHIGEYUKI (JP)
MATSUBARA AKIO (JP)
Application Number:
PCT/JP2019/002122
Publication Date:
August 01, 2019
Filing Date:
January 23, 2019
Export Citation:
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Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
D04H3/007; A61F13/15; A61F13/51; A61L15/24; C08F110/06; C08K5/20; C08L23/06; C08L23/12; C08L23/18; D01D5/098; D01F6/46; D04H3/16
Domestic Patent References:
WO2017006972A12017-01-12
WO2014050965A12014-04-03
WO2017006972A12017-01-12
WO2003087172A12003-10-23
Foreign References:
JP2017179658A2017-10-05
JPS5943109A1984-03-10
JP2011214163A2011-10-27
JPH06315968A1994-11-15
JPH09512313A1997-12-09
JP2015071854A2015-04-16
JP2018009762A2018-01-18
Other References:
A. ZAMBELLI ET AL., MACROMOLECULES, vol. 6, 1973, pages 925
A. ZAMBELLI ET AL., MACROMOLECULES, vol. 8, 1975, pages 687
Attorney, Agent or Firm:
NAKAJIMA, Jun et al. (JP)
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